CN111894940B - Mechanical oil cylinder structure capable of automatically reciprocating - Google Patents
Mechanical oil cylinder structure capable of automatically reciprocating Download PDFInfo
- Publication number
- CN111894940B CN111894940B CN202010776092.8A CN202010776092A CN111894940B CN 111894940 B CN111894940 B CN 111894940B CN 202010776092 A CN202010776092 A CN 202010776092A CN 111894940 B CN111894940 B CN 111894940B
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- Prior art keywords
- piston
- cylinder barrel
- reversing
- cylinder
- oil
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Abstract
The invention relates to a mechanical automatic reciprocating oil cylinder structure, which consists of an end cover, a cylinder barrel, a piston and a piston rod I, wherein the cylinder barrel is of a hollow cylindrical structure, the left end and the right end of the cylinder barrel are both fixed with the end cover, the piston is arranged at an inner through hole in a sliding manner, a left reversing piston and a right reversing piston are respectively arranged at the through hole of the cylinder barrel at the two sides of the piston, and an outer side limiting block and an inner side limiting block are respectively fixed at the outer side of the left reversing piston and the inner side of the cylinder barrel at the inner side of the left reversing piston and the right reversing piston; the piston is characterized in that connecting rods are fixed at the center positions of two ends of the piston, the other end of each connecting rod is connected with a piston rod I, the piston rods I respectively penetrate through a left reversing piston and a right reversing piston to be connected with piston rods II, and the piston rods II respectively penetrate through end covers to be arranged outside the cylinder barrel. According to the mechanical automatic reciprocating oil cylinder structure, under the condition that no reversing valve is controlled or is not needed, the oil cylinder can automatically reciprocate by means of the mechanical structure, energy consumption is reduced, and working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of operation equipment, and particularly relates to a mechanical automatic reciprocating oil cylinder structure.
Background
The reversing action of the piston of the oil cylinder generally needs to change an oil inlet path and an oil return path of the oil cylinder by operating the hydraulic reversing valve in a manual or electric control mode through the hydraulic reversing valve, so that the reversing action of the piston of the oil cylinder is realized. However, in some occasions, a hydraulic cylinder needs to automatically reciprocate for a long time, and manual or electric control of the hydraulic reversing valve is too complicated, so that the workload is increased, and the energy consumption is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a mechanical automatic reciprocating oil cylinder structure.
The invention relates to a mechanical automatic reciprocating oil cylinder structure, which consists of an end cover, a cylinder barrel, a piston and a piston rod I, wherein the cylinder barrel is of a hollow cylindrical structure, the left end and the right end of the cylinder barrel are both fixed with the end cover, the piston is arranged at an inner through hole in a sliding manner, a left reversing piston and a right reversing piston are respectively arranged at the through hole of the cylinder barrel at the two sides of the piston, and an outer side limiting block and an inner side limiting block are respectively fixed at the outer side of the left reversing piston and the inner side of the cylinder barrel at the inner side of the left reversing piston and the right reversing piston; the piston is characterized in that connecting rods are fixed at the center positions of two ends of the piston, the other end of each connecting rod is connected with a piston rod I, the piston rods I respectively penetrate through a left reversing piston and a right reversing piston to be connected with piston rods II, the piston rods II respectively penetrate through end covers to be arranged outside the cylinder barrel, and oil return paths and oil inlet paths are respectively arranged on the outer walls of the upper end and the lower end of the cylinder barrel.
As a further improvement of the invention, two inlet ends of the oil inlet path and two outlet ends of the oil return path are both positioned between the outer side limiting block and the inner side limiting block at two sides, two outlet ends of the oil return path are both positioned on the inner wall of the cylinder barrel close to the inner side of the outer side limiting block, and two inlet ends of the oil inlet path are both positioned on the inner wall of the cylinder barrel close to the outer side of the inner side limiting block.
As a further improvement of the invention, a piston rod seal is arranged at the joint of the piston rod II and the end cover.
As a further improvement of the invention, reversing seals are arranged at the positions where the left reversing piston and the right reversing piston are attached to the inner wall of the cylinder barrel.
As a further improvement of the invention, a piston seal is arranged at the center of the position where the piston is attached to the inner wall of the cylinder barrel.
The mechanical automatic reciprocating oil cylinder has reasonable structural design, and can realize automatic reciprocating operation by depending on the self mechanical structure under the condition of no or no need of control of a reversing valve, thereby reducing the energy consumption and improving the working efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a mechanical automatic reciprocating cylinder structure according to the present invention;
fig. 2 is a schematic view of the piston of the present invention moving to the right extreme.
Detailed Description
The invention relates to a mechanical automatic reciprocating oil cylinder structure, which consists of an end cover 1, a cylinder barrel 3, a piston 7 and a piston rod 9, wherein the cylinder barrel 3 is of a hollow cylindrical structure, the end cover 1 is fixed at the left end and the right end of the cylinder barrel 3, the piston 7 is arranged at an inner through hole in a sliding manner, a piston seal 8 is arranged at the center of the position where the piston 7 is attached to the inner wall of the cylinder barrel 3 so that the piston 7 can move under hydraulic pressure, and the mechanical automatic reciprocating oil cylinder structure has a bidirectional sealing effect. And a left reversing piston 5 and a right reversing piston 14 are respectively arranged at through holes of the cylinder barrel 3 at two sides of the piston 7, and reversing seals 6 are respectively arranged at the positions where the left reversing piston 5 and the right reversing piston 14 are attached to the inner wall of the cylinder barrel 3. And an outer side limiting block 4 and an inner side limiting block 12 are respectively fixed on the outer sides of the left reversing piston 5 and the right reversing piston 14 and on the inner wall of the inner side cylinder barrel 3 and are used for limiting the movement positions of the left reversing piston 5 and the right reversing piston 14. A connecting rod 15 is fixed at the center of each of two ends of the piston 7, the other end of the connecting rod 15 is connected with a piston rod I9, the two piston rods I9 respectively penetrate through a left reversing piston 5 and a right reversing piston 14 to be connected with corresponding piston rods II 13, the diameter of the piston rod I9 and the diameter of a round hole at the center of the left reversing piston 5 and the right reversing piston 14 are both smaller than the diameter of the connecting rod 15 and the diameter of the piston rod II 13, the piston rods II 13 are both arranged outside the cylinder barrel 3 after penetrating through an end cover 1, a piston rod seal 2 is arranged at the joint of the piston rod 9 and the end cover 1, an oil return path 11 and an oil inlet path 10 are respectively arranged on the outer walls of the upper end and the lower end of the cylinder barrel 3, the length of the oil return path 11 is slightly larger than the length of the oil inlet path 10, two inlet ends of the oil inlet path 10 and two outlet ends of the oil return path 11 are both positioned between an outer limiting block 4 and an inner limiting block 12 at two sides, and two outlet ends of the oil path 11 are both positioned on the inner wall of the cylinder barrel 3 near the inner side of the outer limiting block 4, two inlet ends of the oil inlet path 10 are both positioned on the inner wall of the cylinder barrel 3 near the outer side of the inner side limiting block 12.
As shown in figure 1, when the left reversing piston 5 is attached to the outer limit block 4, the right reversing piston 14 is attached to the inner limit block 12, the oil return path 11 is isolated from the left oil chamber and is communicated with the right oil chamber, the oil inlet path 10 is communicated with the left oil chamber and is isolated from the right oil chamber, when the piston 7 moves rightwards, the outer oil chamber is communicated with the through hole inside the cylinder 3 through the left inlet of the oil inlet path 10, the right inlet of the oil inlet path 10 is blocked by the reversing seal 6 on the right reversing piston 14, the right outlet of the oil return path 11 is communicated with the through hole inside the cylinder 3, the left outlet is blocked by the reversing seal 6 on the left reversing piston 5, at the moment, high-pressure oil enters the inside of the cylinder 3 through the left inlet of the oil inlet path 10 to push the piston 7 to move towards the right reversing piston 14, when the connecting rod 15 on the right reversing piston 14, the piston II 13 on the left side simultaneously abuts against the outer side of the left reversing piston 5, under the action of the left piston rod II 13, the left reversing piston 5 is driven to move rightwards until abutting against the outer side limiting block 4, and simultaneously the left reversing piston 5 is driven to move rightwards until abutting against the inner side limiting block 12, at the same time, the reversing seal 6 on the left reversing piston 5 blocks the left end inlet of the oil inlet path 10, the right end inlet of the oil inlet path 10 is communicated with the inside of the cylinder barrel 3, the left end outlet of the oil return path 11 is communicated with the inner through hole of the cylinder barrel 3, the right end outlet is blocked by the reversing seal 6 on the right reversing piston 14, at the moment, the outer oil chamber is communicated with the inner through hole of the cylinder barrel 3 through the right end inlet of the oil inlet path 10, high-pressure oil enters the inner part of the cylinder barrel 3 through the right end inlet of the oil inlet path 10 to push the piston 7 to move leftwards, when the connecting rod 15 on the left side abuts against the left reversing piston 5 to push the piston to move leftwards, the piston rod II 13 on the right side abuts against the outer side of the right reversing piston 14 at the same time, under the action of the right piston rod II 13, the right reversing piston 14 is driven to move leftwards at the same time, when the piston 7 moves leftwards to the extreme, the left reversing piston 5 and the right reversing piston 14 return to the starting state again, as shown in figure 1, the left reversing piston 5 is attached to the outer side limiting block 4, the right reversing piston 14 is attached to the inner side limiting block 12, and the automatic reciprocating motion is repeatedly realized.
Claims (5)
1. A mechanical oil cylinder structure capable of automatically reciprocating comprises an end cover (1), a cylinder barrel (3), a piston (7) and a piston rod I (9), and is characterized in that the cylinder barrel (3) is of a hollow cylindrical structure, the end cover (1) is fixed at each of the left end and the right end of the cylinder barrel (3), the piston (7) is arranged at each through hole in the cylinder barrel in a sliding manner, a left reversing piston (5) and a right reversing piston (14) are respectively arranged at the through holes of the cylinder barrel (3) at the two sides of the piston (7), an outer limit block and an inner limit block are respectively fixed at the outer side of the left reversing piston (5) and the inner wall of the cylinder barrel (3) at the inner side, and an outer limit block and an inner limit block are respectively fixed at the outer side of the right reversing piston (14) and the inner wall of the cylinder barrel (3) at the inner side; the piston (7) both ends central point puts all to be fixed with connecting rod (15), and the other end of connecting rod (15) all is connected with piston rod I (9), and piston rod I (9) pass left side switching-over piston (5) and right side switching-over piston (14) respectively and are connected with piston rod II (13), and outside cylinder (3) were arranged in to piston rod II (13) all passed end cover (1), be equipped with oil return way (11) and oil inlet way (10) on the both ends outer wall about cylinder (3) respectively.
2. The oil cylinder structure of mechanical automatic reciprocating motion according to claim 1, characterized in that two inlet ends of the oil inlet path (10) and two outlet ends of the oil return path (11) are located between the outer side limit block (4) and the inner side limit block (12) at both sides, two outlet ends of the oil return path (11) are located on the inner wall of the cylinder barrel (3) near the inner side of the outer side limit block (4), and two inlet ends of the oil inlet path (10) are located on the inner wall of the cylinder barrel (3) near the outer side of the inner side limit block (12).
3. The oil cylinder structure with the mechanical automatic reciprocating motion as claimed in claim 1, characterized in that a piston rod seal (2) is arranged at the position where the piston rod II (13) is attached to the end cover (1).
4. The oil cylinder structure with the mechanical automatic reciprocating motion as claimed in claim 1, characterized in that the positions where the left reversing piston (5) and the right reversing piston (14) are attached to the inner wall of the cylinder barrel (3) are both provided with reversing seals (6).
5. A cylinder structure with automatic reciprocating motion of mechanical type according to claim 1, characterized in that the center of the position where the piston (7) and the inner wall of the cylinder (3) are attached is provided with a piston seal (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010776092.8A CN111894940B (en) | 2020-08-05 | 2020-08-05 | Mechanical oil cylinder structure capable of automatically reciprocating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010776092.8A CN111894940B (en) | 2020-08-05 | 2020-08-05 | Mechanical oil cylinder structure capable of automatically reciprocating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111894940A CN111894940A (en) | 2020-11-06 |
| CN111894940B true CN111894940B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010776092.8A Active CN111894940B (en) | 2020-08-05 | 2020-08-05 | Mechanical oil cylinder structure capable of automatically reciprocating |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682387B (en) * | 2021-01-14 | 2023-05-09 | 山东浩睿智能科技有限公司 | Automatic return steering oil cylinder |
| CN113718884B (en) * | 2021-08-31 | 2022-12-09 | 山东天瑞重工有限公司 | Valveless reversing type idle-driving prevention hydraulic breaking hammer |
| CN113738738B (en) * | 2021-09-29 | 2023-06-23 | 西安航空学院 | Bidirectional rapid hydraulic cylinder |
| CN113864285A (en) * | 2021-09-30 | 2021-12-31 | 中船重工中南装备有限责任公司 | Double-acting feeding oil cylinder of digging and anchoring machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867044A (en) * | 1984-11-26 | 1989-09-19 | The United States Of America As Represented By The Secretary Of The Navy | Jam resistant fluid power actuator for ballistic-damage tolerant redundant cylinder assemblies |
| DE60306487T2 (en) * | 2003-02-27 | 2006-12-28 | Delphi Technologies, Inc., Troy | reverse slide |
| CN2929292Y (en) * | 2006-03-29 | 2007-08-01 | 牟安平 | Automatic reciprocating cylinder |
| CN102658320B (en) * | 2012-05-30 | 2014-04-09 | 江苏扬力数控机床有限公司 | Hydraulic cylinder of numerical-control turret punch press |
| CN103939467B (en) * | 2014-05-04 | 2017-04-12 | 中国电子科技集团公司第十六研究所 | Air hydrostatic bearing of machine making free piston type reciprocating motion |
| CN110593762B (en) * | 2019-10-18 | 2020-08-25 | 合力（天津）能源科技股份有限公司 | Reciprocating low-pressure high-frequency hydraulic pulse vibrator |
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| CN111894940A (en) | 2020-11-06 |
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