CN116950951A - Novel hollow hydraulic cylinder - Google Patents
Novel hollow hydraulic cylinder Download PDFInfo
- Publication number
- CN116950951A CN116950951A CN202310222896.7A CN202310222896A CN116950951A CN 116950951 A CN116950951 A CN 116950951A CN 202310222896 A CN202310222896 A CN 202310222896A CN 116950951 A CN116950951 A CN 116950951A
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- CN
- China
- Prior art keywords
- cylinder
- oil
- piston
- hydraulic
- 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.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims description 57
- 239000010720 hydraulic oil Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000007847 structural defect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000019771 cognition Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
-
- 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
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/04—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member with oscillating cylinder
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention belongs to the technical field of petroleum, natural gas, coal exploitation equipment, equipment maintenance tools and hydraulic cylinders, and discloses a novel hollow hydraulic cylinder, wherein an opening is formed in the center of a cylinder base, an inner cylinder barrel is welded at the opening, and an outer cylinder barrel is arranged on the outer side of the inner cylinder barrel; a piston is connected between the outer side of the inner cylinder and the inner side of the outer cylinder in a sliding way, and the piston is fixedly connected with the piston rod. An upper flange is arranged at the top of the piston rod through a locking screw, and a bearing is arranged on the upper flange; the upper flange is a ring-shaped flange, and a hole is formed in the center of the upper flange. The lower end opening of the outer cylinder barrel is provided with an uplink oil cavity opening, the upper end opening of the outer cylinder barrel is provided with a downlink oil cavity opening, and the downlink oil cavity opening extends to the lower end of the outer cylinder barrel through a pipeline. Under special use, an object passes through a cylindrical space in an inner cylinder barrel of the hollow hydraulic cylinder to reach the top of an upper flange on the piston rod for fixation, and lifting, shrinkage or movement of the object is realized; solves the problems of complicated design and use caused by the structural defect of the common hydraulic cylinder under the specific condition.
Description
Technical Field
The invention belongs to the technical field of petroleum, natural gas, coal exploitation equipment, equipment maintenance tools and hydraulic cylinders, and particularly relates to a novel hollow hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston; the hydraulic cylinder basically consists of a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device are necessary for other devices depending on the specific application.
At present, when hydraulic cylinders are used as a transmission part in certain specific working environment positions, excessive frame structures or multiple cylinders are needed to assist in achieving the required effect, and the excessive frame structures increase complexity and consume a large amount of materials, so that the design volume is increased. The existing hydraulic cylinder has the technical problem that the center cannot penetrate through the hollow, so that the hydraulic cylinder cannot be reasonably utilized or is fussy to use under the conditions of certain specific environmental position factors and the like.
Through the above analysis, the problems and defects existing in the prior art are as follows: the existing hydraulic cylinder has the technical problem that the center cannot penetrate through the hollow, so that the hydraulic cylinder cannot be reasonably utilized or is fussy to use under the conditions of certain specific environmental position factors and the like.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a novel hollow hydraulic cylinder.
The invention is realized in such a way that a novel hollow hydraulic cylinder is provided with a cylinder base; an opening is formed in the center of the oil cylinder base, an inner cylinder barrel is arranged at the opening, and an outer cylinder barrel is arranged at the outer side of the inner cylinder barrel;
a piston is connected between the outer side of the inner cylinder and the inner side of the outer cylinder in a sliding way, and the piston is fixedly connected with the piston rod.
Further, an upper flange is arranged at the top of the piston rod through a locking screw, and a bearing is arranged on the upper flange.
Further, the upper flange is an annular flange, and a hole is formed in the center of the upper flange.
Further, the piston and the piston rod are located in annular spaces outside the inner cylinder and inside the outer cylinder.
Further, an upper oil cavity opening is formed in the lower end opening of the outer cylinder barrel, a lower oil cavity opening is formed in the upper end opening of the outer cylinder barrel, and the lower oil cavity opening extends to the lower end of the outer cylinder barrel through a pipeline.
Further, an inner annular cylinder cover is arranged between the top end of the inner cylinder and the piston rod, and an outer annular cylinder cover is arranged between the piston rod and the top end of the outer cylinder.
Further, the connection part of the piston and the piston rod is provided with an oil through hole for the smooth mutual circulation of hydraulic oil in two annular spaces above the piston between the inner cylinder barrel and the piston rod and between the outer cylinder barrel and the piston rod.
Another object of the present invention is to provide a control method of a novel hollow hydraulic cylinder, the control method of the novel hollow hydraulic cylinder comprising: the motor provides kinetic energy to drive the hydraulic oil pump, hydraulic oil enters a descending oil cavity opening through a hydraulic pipeline, the hydraulic oil generates downward thrust to the piston, the piston drives the piston rod to descend, the shrinkage of the hollow hydraulic oil cylinder is realized, and therefore an object fixed on the upper flange is driven to move along with the shrinkage direction of the oil cylinder; meanwhile, hydraulic oil below the piston flows into the hydraulic oil tank through the ascending oil cavity port. When hydraulic oil enters an uplink oil cavity opening through a hydraulic pipeline, the hydraulic oil generates upward thrust to a piston, the piston drives a piston rod to ascend, and further the hollow hydraulic oil cylinder is stretched, and an object fixed on an upper flange is driven to move along the stretching direction of the oil cylinder; meanwhile, hydraulic oil above the piston flows back to the hydraulic oil tank through the descending oil cavity port.
Another object of the invention is to provide a piston cylinder characterized in that it comprises a new hollow hydraulic cylinder.
Another object of the present invention is to provide a plunger cylinder characterized in that the plunger cylinder comprises a novel hollow hydraulic cylinder.
Another object of the present invention is to provide a swing cylinder comprising a novel hollow hydraulic cylinder.
In combination with the technical scheme and the technical problems to be solved, the technical scheme to be protected has the following advantages and positive effects:
the hollow hydraulic cylinder of the invention forms a cylindrical space from the upper flange at the top of the piston rod to the center of the bottom of the cylinder base, and two completely sealed annular oil chambers are formed between the inner cylinder barrel and the outer cylinder barrel by the piston. In the use process, the central cylindrical space of the hollow oil cylinder is used for fixing the hollow oil cylinder to the upper flange at the top end of the piston rod through some objects or workpieces and the like, so that the objects can be lifted, contracted or moved, and the defect of the traditional use of the hydraulic oil cylinder is overcome. The invention solves the problem of hollow structural design of the hydraulic cylinder in the prior art; solves the problems of complicated design and use caused by the structural defect of the common hydraulic cylinder under the specific condition. The hollow hydraulic cylinder is more practical and portable under specific conditions.
The traditional hydraulic cylinder is not hollow from top to bottom, so that the hydraulic cylinder is used as a transmission part under special conditions, excessive frame structures are needed to assist in achieving the required effect, the design height and the size of the whole machine are increased, the hollow penetrating design of the hollow hydraulic cylinder thoroughly turns over the consistent cognition of the hydraulic cylinder, an object passes through a cylindrical space in an inner cylinder barrel of the hollow hydraulic cylinder to reach the top of an upper flange on a piston rod for fixing under special purposes, and lifting, shrinkage or movement of the object is realized. The complex design of excessive frame structure has been solved, the height of having reduced the use simultaneously, has reduced the potential safety hazard greatly, has realized the saving of material more.
The technical scheme of the invention fills the technical blank in the domestic and foreign industries: the hydraulic cylinder is generally solid at home and abroad, and the hollow design of the center of the hydraulic cylinder can fully and efficiently utilize the center of the hydraulic cylinder to realize the transmission of objects.
The technical scheme of the invention solves the technical problems that people are always desirous of solving but are not successful all the time: for example, an existing object needs to be lifted or moved, but cannot apply force on one side to lift, shrink or move, otherwise the gravity center of the object is offset, so that two hydraulic cylinders are needed to apply force to the object left and right at the same time and an excessive number of supporting structures such as frames are added to achieve the required effect. However, the application is complicated, synchronization and gravity center deviation cannot be accurately ensured, and the required effect cannot be ensured if the power or the flow of the motor or the oil pump is not required by using two common oil cylinders. The hollow hydraulic cylinder can be directly sleeved on the object according to the using condition, and the hollow hydraulic cylinder with the diameter of an opening hole in the center of the hollow hydraulic cylinder being larger than the diameter of the object such as a rope, a rod, a pipe, a pin, a shaft and the like is selected, so that the object can be more simply and conveniently driven under the condition that the gravity center position is not changed.
The technical scheme of the invention overcomes and compensates for the technical cognition prejudice of people on the structure of the hydraulic cylinder.
Drawings
FIG. 1 is a schematic diagram of a novel hollow hydraulic cylinder structure provided by an embodiment of the invention;
in the figure: 1. an oil cylinder base; 2. an outer cylinder; 3. an inner cylinder; 4. an outer annular cylinder cover; 5. an inner annular cylinder cover; 6. a piston; 7. a piston rod; 8. an upper flange; 9. a bearing; 10. locking a screw; 11. a downlink oil cavity port; 12. an uplink oil cavity port; 13. and (5) oil hole is communicated. 14. A descending oil cavity port extension pipe. 15. And collecting drainage ports through oil seepage.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1: the novel hollow hydraulic cylinder provided by the embodiment of the invention is provided with a cylinder base 1,
an opening is formed in the center of the oil cylinder base 1, an inner cylinder barrel 3 is arranged at the opening, and an outer cylinder barrel 2 is arranged outside the inner cylinder barrel 3. The lower end opening of the outer cylinder barrel 2 is provided with an uplink oil cavity opening 12, the upper end opening of the outer cylinder barrel 2 is provided with a downlink oil cavity opening 11, and the downlink oil cavity opening 11 extends to the lower end of the outer cylinder barrel 2 through a pipeline; a piston 6 is slidingly connected between the outer side of the inner cylinder 3 and the inner side of the outer cylinder 2, the piston 6 is fixedly connected with a piston rod 7, and the piston 6 and the piston rod 7 are positioned in annular spaces between the outer side of the inner cylinder 3 and the inner side of the outer cylinder 2. An inner annular cylinder cover 5 is arranged between the top end of the inner cylinder barrel 3 and the piston rod 7, an outer annular cylinder cover 4 is arranged between the piston rod 7 and the top end of the outer cylinder barrel 2, the lowest end of the outer annular cylinder cover 4 is lower than the descending oil cavity opening 11 and cannot block hydraulic oil flow to pass through the descending oil cavity opening 11, when the piston 6 moves to the lowest end of the outer annular cylinder cover 4, the piston 6 does not move, a certain space can be reserved, and hydraulic oil can effectively exert pressure on the piston 6 to finish descending when the piston 6 descends. Thus, two completely closed oil cavities are formed in the hollow oil cylinder, and the up-and-down stroke of the piston rod 7 is realized. The top of the piston rod 7 is provided with an upper flange 8 through a locking screw 10, the upper flange 8 is a ring-shaped flange, the center of the upper flange 8 is provided with a hole, the upper flange 8 is provided with a bearing 9, and a cylindrical hollow area which penetrates from the center of the top of the upper flange 8 to the center of the oil cylinder base 1 is formed. (the object to be driven is penetrated through the device and driven). The connection part of the piston 6 and the piston rod 7 is also provided with an oil hole 13, so that hydraulic oil can flow through the oil hole 13 and a gap between the inner cylinder 3 and the piston rod 7 and a gap between the outer cylinder 2 and the piston rod 7, and the problems of oil shortage and vacuum environment formation between the inner cylinder 3 and the piston rod 7 are effectively solved. Wherein, the outer cylinder 2, the inner cylinder 3, the piston 6 and the piston rod 7 are all made by finish machining of special steel pipes with different diameters for oil cylinders. The seepage collecting and drainage port 15 is used for collecting and guiding the seepage of oil to a designated place after the oil cylinder runs for a long time if the seepage of the oil occurs, so that the equipment is kept clean.
The working principle of the invention is as follows: the motor provides kinetic energy to drive the hydraulic oil pump, hydraulic oil enters the descending oil cavity port 11 through the hydraulic pipeline, the hydraulic oil generates downward thrust to the piston 6, the piston 6 drives the piston rod 7 to descend, and shrinkage of the hollow hydraulic oil cylinder is further achieved, and accordingly an object fixed on the upper flange 8 is driven to move along with the shrinkage direction of the oil cylinder. While hydraulic oil under the piston 6 flows into the hydraulic tank through the ascending oil chamber port 12. When hydraulic oil enters the ascending oil cavity port 12 through a hydraulic pipeline, the hydraulic oil generates upward thrust to the piston 6, the piston 6 drives the piston rod 7 to ascend, and the hollow hydraulic oil cylinder is further extended, so that an object fixed on the upper flange 8 is driven to move along the extending direction of the oil cylinder. While the hydraulic oil above the piston 6 flows back into the hydraulic tank through the down-flow oil port 11.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a novel cavity hydraulic cylinder which characterized in that, novel cavity hydraulic cylinder is provided with:
an oil cylinder base;
an opening is formed in the center of the oil cylinder base, an inner cylinder barrel is arranged at the opening, and an outer cylinder barrel is arranged at the outer side of the inner cylinder barrel;
a piston is connected between the outer side of the inner cylinder and the inner side of the outer cylinder in a sliding way, and the piston is fixedly connected with the piston rod.
2. The novel hollow hydraulic cylinder as recited in claim 1, wherein the top of the piston rod is provided with an upper flange by a locking screw, and the upper flange is provided with a bearing.
3. The novel hollow hydraulic cylinder as recited in claim 2 wherein the upper flange is a ring flange with a central opening.
4. The novel hollow hydraulic cylinder as recited in claim 1 wherein the piston and piston rod are located in annular spaces outside the inner cylinder and inside the outer cylinder.
5. The novel hollow hydraulic cylinder as recited in claim 1, wherein the lower opening of the outer cylinder is provided with an upstream oil cavity port, the upper opening of the outer cylinder is provided with a downstream oil cavity port, and the downstream oil cavity port extends to the lower end of the outer cylinder through a pipeline.
6. The novel hollow hydraulic cylinder as recited in claim 1, wherein an inner annular cylinder cover is installed between the top end of the inner cylinder and the piston rod, and an outer annular cylinder cover is installed between the piston rod and the top end of the outer cylinder;
an oil hole is arranged at the joint of the piston and the piston rod; the outside cylinder cover is provided with an oil seepage collecting drainage port.
7. A control method of a novel hollow hydraulic cylinder according to any one of claims 1 to 6, characterized in that the control method of the novel hollow hydraulic cylinder comprises: the motor provides kinetic energy to drive the hydraulic oil pump, hydraulic oil enters a descending oil cavity opening through a hydraulic pipeline, the hydraulic oil generates downward thrust to the piston, the piston drives the piston rod to descend, the shrinkage of the hollow hydraulic oil cylinder is realized, and therefore an object fixed on the upper flange is driven to move along with the shrinkage direction of the oil cylinder; meanwhile, hydraulic oil below the piston flows into the hydraulic oil tank through the ascending oil cavity port. When hydraulic oil enters an uplink oil cavity opening through a hydraulic pipeline, the hydraulic oil generates upward thrust to a piston, the piston drives a piston rod to ascend, and further the hollow hydraulic oil cylinder is stretched, and an object fixed on an upper flange is driven to move along the stretching direction of the oil cylinder; meanwhile, hydraulic oil above the piston flows back to the hydraulic oil tank through the descending oil cavity port.
8. A piston cylinder comprising the novel hollow hydraulic cylinder of any one of claims 1 to 6.
9. A plunger cylinder, characterized in that it comprises a novel hollow hydraulic cylinder according to any one of claims 1 to 6.
10. A swinging cylinder, characterized in that the swinging cylinder comprises the novel hollow hydraulic cylinder according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310222896.7A CN116950951A (en) | 2023-03-09 | 2023-03-09 | Novel hollow hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310222896.7A CN116950951A (en) | 2023-03-09 | 2023-03-09 | Novel hollow hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116950951A true CN116950951A (en) | 2023-10-27 |
Family
ID=88451766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310222896.7A Pending CN116950951A (en) | 2023-03-09 | 2023-03-09 | Novel hollow hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116950951A (en) |
-
2023
- 2023-03-09 CN CN202310222896.7A patent/CN116950951A/en active Pending
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