CN114135538A - Oil storage type variable amplitude oil cylinder - Google Patents
Oil storage type variable amplitude oil cylinder Download PDFInfo
- Publication number
- CN114135538A CN114135538A CN202111440306.5A CN202111440306A CN114135538A CN 114135538 A CN114135538 A CN 114135538A CN 202111440306 A CN202111440306 A CN 202111440306A CN 114135538 A CN114135538 A CN 114135538A
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- Prior art keywords
- oil
- oil storage
- piston rod
- cylinder
- piston
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- 239000003921 oil Substances 0.000 abstract description 173
- 239000010720 hydraulic oil Substances 0.000 abstract description 44
- 230000033001 locomotion Effects 0.000 description 16
- 239000012530 fluid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
-
- 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
- F15B15/1471—Guiding means other than in the end cap
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses an oil storage type amplitude-variable oil cylinder, which belongs to the technical field of hydraulic oil cylinders and solves the problems that hydraulic oil needs to be stored in a crane oil tank completely in the traditional technology, so that a crane is heavy in weight and complex in structure.
Description
Technical Field
The invention belongs to the technical field of hydraulic oil cylinders, and particularly relates to an oil storage type variable amplitude oil cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.
When the crane works, the hydraulic oil is used as a working medium of each part of hydraulic actuating element and is equivalent to blood of the crane. In the super crane, the hydraulic cylinders are large in diameter and long in length, so that the required hydraulic oil is large in volume, and about 2800 liters of hydraulic oil is needed when the telescopic cylinder and the luffing cylinder of the 800t super crane are in a fully extended state. And if all the hydraulic oil needs to be stored in the crane oil tank, an oversized oil tank is needed. This is contrary to the concept of lightweight and simplified construction of modern crane designs.
Disclosure of Invention
The invention provides an oil storage type variable amplitude oil cylinder, aiming at the problems that hydraulic oil needs to be stored in a crane oil tank completely in the prior art, so that a crane is heavy in weight and complex in structure, and the purpose of the oil storage type variable amplitude oil cylinder is as follows: the hydraulic oil is stored in the oil cylinder, so that the structure of the crane is simplified.
The technical scheme adopted by the invention is as follows:
the oil storage type variable amplitude oil cylinder comprises a cylinder barrel, wherein an oil storage piston rod is fixedly and slidably arranged in the cylinder barrel, a cavity extending oil port and a cavity contracting oil port are formed in the side wall of the cylinder barrel, the oil storage piston rod is of a hollow structure, and a plurality of oil passing holes are formed in the oil storage piston rod.
Adopt above-mentioned scheme, wherein the oil storage piston rod can be through stretching the chamber hydraulic fluid port, the piston motion in the cylinder is realized with producing oil to the oil feed that contracts the chamber hydraulic fluid port, wherein the inside of oil storage piston rod sets up the several and crosses the oilhole, when the oil storage piston rod stretches out, the hydraulic oil of storing in the oil storage piston rod can be arranged between oil storage piston rod and the cylinder through crossing the oilhole, and in getting into the oil tank of hoist through contracting the chamber hydraulic fluid port, and deliver to each structure that needs to use hydraulic oil through the oil tank, when the oil storage piston rod contracts the state entirely, the oil storage piston rod pushes to the cylinder is inside, hydraulic oil gets into the oil storage district through crossing the oil port, through this kind of structure, can store partial hydraulic oil in the oil storage piston rod, practice thrift the oil tank volume, the structure simplification and the lightweight of hoist have been realized.
The inside of oil storage piston rod is provided with the oil storage area, it sets up to cross the oilhole on the lateral wall of oil storage area, the inside fixed second piston that is provided with in oil storage area, the second piston with oil storage area sliding connection.
By adopting the scheme, the second piston can assist the hydraulic oil in the oil storage area to flow, the second piston does not move when the oil storage piston rod extends out and retracts, and the volume of the oil storage area in the oil storage piston rod changes under the relative motion; when the oil storage piston rod contracts, the volume of an oil storage area in the oil storage piston rod becomes large, hydraulic oil enters the cylinder barrel through the oil port of the contraction cavity and enters the oil storage cavity through the oil hole, the oil storage step is completed, the structure is adopted, the purpose of storing oil by the piston rod can be achieved through normal work of the oil storage piston rod, the structure of the hydraulic cylinder of the crane is further simplified, and the purpose of reducing the oil tank of the crane is achieved.
And an exhaust plug is fixedly arranged on the side wall of the cylinder barrel.
And a first piston is fixedly arranged on the side wall of the oil storage piston rod.
Adopt above-mentioned scheme, the removal of oil storage piston rod in the cylinder is accomplished to the first piston rod of accessible, when stretching out, stretches the chamber hydraulic fluid port and feeds hydraulic oil, and first piston is under the effect of hydraulic oil, with the oil storage pneumatic cylinder outside release, when the retraction, contracts the chamber hydraulic fluid port and feeds hydraulic oil, and first piston descends the oil storage pneumatic cylinder and pushes to the cylinder is inside in the effect of hydraulic oil, and wherein the circle dress structure of first piston can cooperate hydraulic oil to form thrust, drives the motion of oil storage piston rod.
An oil pipe is fixedly arranged inside the cylinder barrel, and the oil storage piston rod is connected with the oil pipe in a sliding mode.
Adopt above-mentioned scheme, wherein oil pipe can keep the oil storage piston rod to move along the rectilinear direction, plays the effect of slide rail, and when carrying out piston motion, oil pipe can fix the second piston in the oil storage piston rod, makes it not along with the motion of oil storage piston rod to reach its effect of releasing hydraulic oil and enlarging the oil storage area volume.
The second piston is fixedly connected with the oil pipe.
And a guide sleeve is arranged between the cylinder barrel and the oil storage piston rod.
And an end cover is fixedly arranged at one end of the oil storage piston rod, which is far away from the second piston.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. wherein the oil storage piston rod can be through stretching the chamber hydraulic fluid port, contract the oil feed and the piston motion of producing oil realization in the cylinder of chamber hydraulic fluid port, wherein the inside of oil storage piston rod sets up the several and crosses the oilhole, when the oil storage piston rod stretches out, the hydraulic oil of storing in the oil storage piston rod can be arranged between oil storage piston rod and the cylinder through crossing the oilhole, and get into the oil tank of hoist through contracting the chamber hydraulic fluid port, and send hydraulic oil to each structure that needs to use hydraulic oil through the oil tank, when the oil storage piston rod contracts the state entirely, the oil storage piston rod pushes to the cylinder is inside, hydraulic oil gets into the oil storage district through crossing the oil port, through this kind of structure, can store partial hydraulic oil in the oil storage piston rod, practice thrift the oil tank volume, the structure simplification and the lightweight of hoist have been realized.
2. The second piston can assist hydraulic oil in the oil storage area to flow, the second piston does not move when the oil storage piston rod extends out and retracts, and the volume of the oil storage area in the oil storage piston rod changes under the relative motion; when the oil storage piston rod contracts, the volume of an oil storage area in the oil storage piston rod becomes large, hydraulic oil enters the cylinder barrel through the oil port of the contraction cavity and enters the oil storage cavity through the oil hole, the oil storage step is completed, the structure is adopted, the purpose of storing oil by the piston rod can be achieved through normal work of the oil storage piston rod, the structure of the hydraulic cylinder of the crane is further simplified, and the purpose of reducing the oil tank of the crane is achieved.
3. The first piston rod of accessible accomplishes the removal of oil storage piston rod in the cylinder, when stretching out, stretches the chamber hydraulic fluid port and feeds into hydraulic oil, and first piston is under the effect of hydraulic oil, with the outside release of oil storage pneumatic cylinder, when the retraction, contracts chamber hydraulic fluid port and feeds into hydraulic oil, and first piston descends oil storage pneumatic cylinder to push to the cylinder is inside in the effect of hydraulic oil, and wherein the circle dress structure of first piston can cooperate hydraulic oil to form thrust, drives the motion of oil storage piston rod.
4. Wherein oil pipe can keep the oil storage piston rod to move along the rectilinear direction, plays the effect of slide rail, and when carrying out piston motion, oil pipe can fix the second piston in the oil storage piston rod, makes it not along with the motion of oil storage piston rod to reach its effect of releasing hydraulic oil and enlarging the oil storage area volume.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a side view of the internal structure of the present invention;
reference numerals: 1-a vent plug; 2-oil pipe; 3-extending a cavity oil port; 4-a cylinder barrel; 5-contracting cavity oil port; 6-oil passing port; 7-an oil storage piston rod; 8-end cap; 9-a first piston; 10-a second piston; 11-a guide sleeve; 12-oil reservoir.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1.
The first embodiment is as follows:
the oil storage type variable amplitude oil cylinder comprises a cylinder barrel 4, an oil storage piston rod 7 is arranged inside the cylinder barrel 4 in a sliding mode, a cavity extending oil port 3 and a cavity contracting oil port 5 are arranged on the side wall of the cylinder barrel 4, the oil storage piston rod 7 is of a hollow structure, and a plurality of oil passing holes 6 are formed in the oil storage piston rod 7.
The inside of oil storage piston rod 7 is provided with oil storage area 12, it sets up to cross oilhole 6 on the lateral wall of oil storage area 12, the inside fixed second piston 10 that is provided with of oil storage area 12, second piston 10 with oil storage area 12 sliding connection.
And an exhaust plug 1 is fixedly arranged on the side wall of the cylinder barrel 4.
And a first piston 9 is fixedly arranged on the side wall of the oil storage piston rod 7.
The inside of cylinder 4 is fixed and is provided with oil pipe 2, oil storage piston rod 7 with oil pipe 2 sliding connection.
The second piston 10 is fixedly connected with the oil pipe 2.
And a guide sleeve 11 is arranged between the cylinder barrel 4 and the oil storage piston rod 7.
And an end cover 8 is fixedly arranged at one end of the oil storage piston rod 7 far away from the second piston 10.
In the above embodiment, the oil storage piston rod 7 can realize piston movement inside the cylinder barrel 4, and specifically, one end of the oil storage piston rod 7 is fixedly connected with the first piston 9, the side wall of the cylinder barrel 4 is provided with the cavity extending oil port 3 and the cavity contracting oil port 5, when in use, a worker needs to connect an oil pipe with the cavity extending oil port 3 and the cavity contracting oil port 5, when the oil storage piston rod 7 needs to extend, hydraulic oil is introduced into the cavity extending oil port 3, and the first piston 9 forms thrust under the action of the hydraulic oil and drives the oil storage piston rod 7 to extend outwards; when the oil storage piston rod 7 needs to be retracted inwards, hydraulic oil is introduced into the cavity oil port 5, the first piston 9 receives thrust on one side of the cavity oil port 5, and the oil storage piston rod 7 is driven to be pushed into the cylinder barrel 4.
When the oil storage piston rod 7 carries out piston motion, can realize the storage to hydraulic oil through the cooperation of its inside second piston 10, oil passing hole 6, oil storage area 12, its specific flow is: when the oil storage hydraulic rod 7 extends, the second piston 10 remains still, when the oil storage piston rod 7 extends, the volume of the oil storage area 12 therein becomes smaller, the hydraulic oil in the oil storage area 12 is pushed out through the oil passing hole 6 and flows back to the crane oil tank through the cavity contracting oil port 5, the crane oil tank sends the returned hydraulic oil to other mechanisms needing the hydraulic oil, in the embodiment, the cylinder 4 is fixedly provided with a central pipe inside, the second piston 10 can be fixedly arranged on the central pipe, so that the second piston 10 is fixed inside the cylinder 4, in the process, the oil storage piston rod 7 plays a role of an additional oil tank, the volume of the crane oil tank is effectively reduced, the hydraulic oil can be flexibly stored and sent out, and the middle part of the piston rod in the prior art is utilized, the structure of the oil tank is simplified, in the embodiment, the crane oil tank 1120L can be saved. When the oil storage piston rod is retracted, hydraulic oil is introduced into the oil storage area 12 through the cavity oil port 5 and the oil through port 6, and the step of storing the hydraulic oil is completed.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (8)
1. The oil storage type variable amplitude oil cylinder comprises a cylinder barrel (4), wherein an oil storage piston rod (7) is arranged inside the cylinder barrel (4) in a sliding mode, a cavity extending oil port (3) and a cavity contracting oil port (5) are formed in the side wall of the cylinder barrel (4), and the variable amplitude oil cylinder is characterized in that the oil storage piston rod (7) is of a hollow structure, and a plurality of oil passing holes (6) are formed in the oil storage piston rod (7).
2. The oil storage type variable amplitude oil cylinder is characterized in that an oil storage area (12) is arranged inside the oil storage piston rod (7), the oil passing hole (6) is formed in the side wall of the oil storage area (12), a second piston (10) is fixedly arranged inside the oil storage area (12), and the second piston (10) is in sliding connection with the oil storage area (12).
3. The oil storage type amplitude cylinder is characterized in that an exhaust plug (1) is fixedly arranged on the side wall of the cylinder barrel (4).
4. The oil storage type luffing cylinder according to claim 1, wherein the side wall of the oil storage piston rod (7) is fixedly provided with a first piston (9).
5. The oil storage type amplitude cylinder according to claim 2, wherein an oil through pipe (2) is fixedly arranged inside the cylinder barrel (4), and the oil storage piston rod (7) is in sliding connection with the oil through pipe (2).
6. The oil-storage type luffing cylinder according to claim 5, wherein the second piston (10) is fixedly connected to the oil pipe (2).
7. The oil storage type amplitude cylinder as claimed in claim 1, wherein a guide sleeve (11) is arranged between the cylinder barrel (4) and the oil storage piston rod (7).
8. The oil storage type luffing cylinder according to claim 2, wherein an end cover (8) is fixedly arranged at one end of the oil storage piston rod (7) far away from the second piston (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440306.5A CN114135538A (en) | 2021-11-30 | 2021-11-30 | Oil storage type variable amplitude oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111440306.5A CN114135538A (en) | 2021-11-30 | 2021-11-30 | Oil storage type variable amplitude oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114135538A true CN114135538A (en) | 2022-03-04 |
Family
ID=80389528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111440306.5A Pending CN114135538A (en) | 2021-11-30 | 2021-11-30 | Oil storage type variable amplitude oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135538A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165887A (en) * | 2017-07-07 | 2017-09-15 | 徐州徐工液压件有限公司 | A kind of oil storage hydraulic cylinder |
-
2021
- 2021-11-30 CN CN202111440306.5A patent/CN114135538A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165887A (en) * | 2017-07-07 | 2017-09-15 | 徐州徐工液压件有限公司 | A kind of oil storage hydraulic cylinder |
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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: 20220304 |