CN113446285A - Two-head belt buffer oil cylinder - Google Patents
Two-head belt buffer oil cylinder Download PDFInfo
- Publication number
- CN113446285A CN113446285A CN202110732731.5A CN202110732731A CN113446285A CN 113446285 A CN113446285 A CN 113446285A CN 202110732731 A CN202110732731 A CN 202110732731A CN 113446285 A CN113446285 A CN 113446285A
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- Prior art keywords
- buffer
- cavity
- cylinder
- piston
- buffering
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- 230000003139 buffering effect Effects 0.000 claims abstract description 54
- 238000013016 damping Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 50
- 239000010720 hydraulic oil Substances 0.000 abstract description 12
- 230000033001 locomotion Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position
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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 relates to the technical field of oil cylinders, and discloses an oil cylinder with two buffering belts, which comprises: the cylinder body assembly is internally provided with a step-shaped oil cavity, the oil cavity comprises a working cavity and two buffer cavities positioned at two ends of the working cavity, and the cavity diameter of each buffer cavity is smaller than that of the working cavity; the piston is slidably arranged in the cylinder body assembly and divides the working cavity into two working half cavities which are respectively communicated with the two buffer cavities at the two ends; buffer, including two buffer blocks, two buffer blocks are fixed in the both sides face of piston respectively, and the buffer block external diameter is slightly less than the chamber footpath of cushion chamber, and when the piston slided left extreme position or right extreme position, corresponding cushion chamber was inserted to one of them buffer block, and the surface of buffer block and the inner surface of cushion chamber form annular damping hole. The two-head buffering oil cylinder provided by the invention can buffer the flow of hydraulic oil through the damping holes formed between the buffering block and the buffering cavity, reduce the impact on the cylinder body assembly and prolong the service life of the oil cylinder.
Description
Technical Field
The invention relates to the technical field of oil cylinders, in particular to an oil cylinder with two buffering belts.
Background
The hydraulic oil cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes 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. When a hydraulic oil cylinder in the prior art is impacted by high-speed load, a piston and a piston rod move quickly, so that the support stability is low, meanwhile, the hydraulic oil pressure in an oil cavity can change rapidly due to the quick movement of the piston, the impact on the piston and a cylinder body assembly is overlarge, and the fatigue failure of the oil cylinder is easily caused.
Disclosure of Invention
Based on the above, the invention aims to provide a two-head belt buffer oil cylinder to solve the technical problems of low support stability and easy fatigue failure of the oil cylinder in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a two-head belt buffer oil cylinder comprises:
the cylinder body assembly is internally provided with a step-shaped oil cavity, the oil cavity comprises a working cavity and two buffer cavities positioned at two ends of the working cavity, and the cavity diameter of each buffer cavity is smaller than that of the working cavity;
the piston is slidably arranged in the working cavity and divides the working cavity into two working half cavities, and the two working half cavities are respectively communicated with the two buffer cavities at the two ends;
the buffering device comprises two buffering blocks, the two buffering blocks are respectively fixed on two side surfaces of the piston, the outer diameter of each buffering block is slightly smaller than the diameter of the buffering cavity, when the piston slides to a left limit position or a right limit position, one of the buffering blocks is inserted into the corresponding buffering cavity, and annular damping holes are formed in the outer surface of each buffering block and the inner surface of each buffering cavity.
As a preferred scheme of the two-head belt buffer oil cylinder, a guide inclined plane is arranged on the side wall of one end, facing the buffer cavity, of the buffer block, and the guide inclined plane inclines towards the center direction of the buffer block along the direction facing the buffer cavity.
As a preferred scheme of the two-head belt buffer oil cylinder, the inclination angle of the guide inclined plane is 3-10 degrees.
As a preferred scheme of the two-head belt buffer oil cylinder, the cavity diameters of the two buffer cavities are different, and the outer diameters of the two buffer blocks are respectively matched with the cavity diameters of the two buffer cavities.
As a preferred scheme of the two-head belt buffer oil cylinder, the two-head belt buffer oil cylinder further comprises a piston rod, piston holes are formed in the centers of the piston and the two buffer blocks, the piston and the two buffer blocks are fixedly sleeved at one end of the piston rod, and two side faces of the piston are respectively abutted to the two buffer blocks.
As a preferred scheme of the two-head buffer oil cylinder, the piston hole is a threaded hole, an external thread is arranged at one end of the piston rod, and the piston rod is fixed on the piston and the two buffer blocks through threaded connection.
As a preferred scheme of the two-head buffering oil cylinder, the cylinder body assembly comprises a cylinder seat, a cylinder cover and a cylinder barrel clamped between the cylinder seat and the cylinder cover, annular bosses are arranged at one ends of the cylinder seat and the cylinder cover, the cylinder barrel is hermetically sleeved on the two annular bosses, and the inner surfaces of the annular bosses are surrounded to form the buffering cavity.
As a preferred scheme with two buffering oil cylinders, oil through ports are respectively formed in the side walls of the cylinder seat and the cylinder cover, and the two oil through ports are respectively communicated with the two buffering cavities.
As a preferred scheme of the two-head buffering oil cylinder, a through hole is formed in the middle of the cylinder cover and communicated with one of the buffering cavities, and the piston rod penetrates through the through hole and extends out of the cylinder body assembly.
As a preferable scheme of the two-head buffering oil cylinder, a sealing device is arranged between the side wall of the through hole and the piston rod.
The invention has the beneficial effects that:
the oil cavity with the buffering oil cylinders at two ends is of a stepped structure and comprises two buffering cavities besides a working cavity, two buffering blocks are fixed at two ends of a piston respectively, when the piston moves rapidly due to load impact on the oil cylinder, the buffering blocks are inserted into the buffering cavities, annular damping holes are formed in the outer surfaces of the buffering blocks and the inner surfaces of the buffering cavities, and hydraulic oil in the working cavity slowly flows into the buffering cavities under the damping action of the damping holes, so that the moving speed of the piston is slowed down, the buffering action is achieved, the impact of the hydraulic oil on the piston and a cylinder body assembly is reduced, the supporting stability of the oil cylinder is improved, the fatigue failure of the oil cylinder is delayed, and the service life of the oil cylinder is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a half sectional view of a two-head cushion cylinder according to an embodiment of the present invention;
fig. 2 is an enlarged view of a position a of the two-head harness cushion cylinder according to the embodiment of the present invention.
The figures are labeled as follows:
1. a cylinder base; 11. a first oil through hole; 2. a cylinder cover; 21. a second oil through opening; 3. a cylinder barrel; 4. a piston; 5. a buffer block; 51. a guide slope; 6. a piston rod; 100. a working chamber; 200. a buffer chamber; 300. a damping hole.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a two-head belt cushion cylinder, including: the cylinder body assembly is internally provided with a step-shaped oil cavity, the oil cavity comprises a working cavity 100 and two buffer cavities 200 positioned at two ends of the working cavity 100, and the cavity diameter of each buffer cavity 200 is smaller than that of the working cavity 100; the piston 4 is slidably arranged in the working cavity 100 and divides the working cavity 100 into two working half cavities, and the two working half cavities are respectively communicated with the two buffer cavities 200 at the two ends; buffer, including two buffer blocks 5, two buffer blocks 5 are fixed in the both sides face of piston 4 respectively, and the external diameter of buffer block 5 slightly is less than the chamber footpath of cushion chamber 200, and when piston 4 slided left extreme position or right extreme position, one of them buffer block 5 inserted corresponding cushion chamber 200 in, the annular damping hole 300 of surface and the interior surface form of cushion chamber 200 of buffer block 5.
The two-head buffering oil cylinder provided by the invention changes the oil cavity structure of the traditional oil cylinder, the two sides of the working cavity 100 are respectively provided with the buffering cavities 200, the two ends of the piston 4 are respectively fixed with the buffering blocks 5, and the flow speed of hydraulic oil from the working cavity 100 to the buffering cavities 200 is slowed down through the damping holes 300 formed in the process that the buffering blocks 5 are inserted into the buffering cavities 200, so that the movement of the piston 4 is buffered, the impact of the hydraulic oil on a cylinder body component is reduced, the working stability of the oil cylinder is obviously improved, and the service life of the oil cylinder is prolonged.
As shown in fig. 1, the cylinder block assembly includes a cylinder block 1, a cylinder head 2, and a cylinder tube 3 interposed between the cylinder block 1 and the cylinder head 2. The side surfaces of the cylinder base 1 and the cylinder cover 2 opposite to each other are respectively provided with an annular boss, the cylinder barrel 3 is sleeved on the two annular bosses in an interference manner, and a sealing structure is arranged between the cylinder barrel 3 and the cylinder base 1 as well as the cylinder cover 2. In order to ensure the connection strength of the cylinder barrel 3 with the cylinder base 1 and the cylinder cover 2, the cylinder barrel 3 is preferably further fastened with the cylinder base 1 and the cylinder cover 2 through screws. The opposite side surfaces of the two annular bosses and the cylinder barrel 3 are surrounded to form a working cavity 100, the inner surfaces of the annular bosses are surrounded to form a buffer cavity 200, and the cavity diameter of the buffer cavity 200 is smaller than that of the working cavity 100.
The diameters of the two buffer cavities 200 may not be the same, so as to meet the processing requirements of the cylinder base 1 and the cylinder cover 2. Accordingly, the outer diameters of the two buffer blocks 5 are adapted to the cavity diameters of the two buffer cavities 200.
The piston 4 is slidably mounted in the working chamber 100, the sliding stroke of the piston 4 being defined by two annular bosses. The piston 4 divides the working chamber 100 into two working half-chambers isolated from each other, each of which communicates with a respective one of the buffer chambers 200. An oil through port is respectively arranged on the cylinder base 1 and the cylinder cover 2, specifically, a first oil through port 11 is arranged on the cylinder base 1, and a second oil through port 21 is arranged on the cylinder cover 2. The first oil through port 11 and the second oil through port 21 are respectively communicated with the two buffer cavities 200, so that hydraulic oil is filled into the working half cavity through the buffer cavities 200, and the piston 4 moves left and right under the action of pressure difference of the hydraulic oil on two sides. Two buffer blocks 5 are respectively fixed on two side surfaces of the piston 4, and when the piston 4 slides to a left limit position or a right limit position, one of the buffer blocks 5 is inserted into the corresponding buffer cavity 200.
The two-head buffering oil cylinder provided by the embodiment of the invention further comprises a piston rod 6, and the piston rod 6 is fixed with the piston 4 and the buffering device. In this embodiment, piston holes are formed in the middle of the piston 4 and the middle of the two buffer blocks 5, and one end of the piston rod 6 is sleeved in the three adjacent piston holes. One end of the piston rod 6 is provided with an external thread, the piston hole is a threaded hole, and the piston rod 6 is fixed on the piston 4 and the buffer block 5 through threaded connection. In other embodiments, the piston rod 6 may be fixed to the piston 4 and the two buffer blocks 5 in other manners, for example, the piston 4 and the two buffer blocks 5 are sleeved on the piston rod 6 in an interference manner, or the piston 4, the buffer blocks 5 and the piston rod 6 may be integrally formed.
The middle part in the cylinder cap 2 is provided with a through hole which is communicated with a buffer cavity 200 at one end of the cylinder cap 2, and one end of the piston rod 6 which is not sleeved with the piston 4 and the buffer block 5 passes through the through hole and extends out of the cylinder cap 2. And a sealing device is arranged between the piston rod 6 and the cylinder cover 2 to prevent the hydraulic oil from leaking. Preferably, at least one annular groove is formed on the wall of the through hole, and a sealing ring is installed in each annular groove to effectively seal the buffer cavity 200.
The side of the buffer block 5 facing one end of the buffer chamber 200 is provided with a guide slope 51, and the guide slope 51 is inclined toward the center of the buffer block 5 in a direction toward the buffer chamber 200. When buffer block 5 removed towards cushion chamber 200, the setting of direction inclined plane 51 can prevent that the lateral wall of buffer block 5 and cushion chamber 200 from producing the interference, and the buffer block 5 of being convenient for inserts, and simultaneously, along with the removal of buffer block 5, the width of orifice 300 diminishes gradually, and the damping of orifice 300 enlarges gradually, plays the effect that improves buffering effect. Preferably, the inclination angle of the guide slope 51 is set between 3-10 °.
When the two-head buffering oil cylinder provided by the embodiment of the invention is impacted by high-speed load, the piston 4 slides leftwards or rightwards rapidly under the action of hydraulic pressure difference, the piston 4 drives the buffering block 5 and the piston rod 6 to move, the piston 4 slides to the buffering block 5 and starts to enter the buffering cavity 200, at the moment, due to the damping action of the damping hole 300, the speed of hydraulic oil in the working half cavity flowing into the buffering cavity 200 is reduced, resistance is generated on the piston 4, the moving speed of the piston 4 is reduced, and the buffering effect is achieved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a both ends area cushion cylinder which characterized in that includes:
the cylinder body assembly is internally provided with a step-shaped oil cavity, the oil cavity comprises a working cavity (100) and two buffer cavities (200) positioned at two ends of the working cavity (100), and the cavity diameter of each buffer cavity (200) is smaller than that of the working cavity (100);
the piston (4) is slidably arranged in the working cavity (100) and divides the working cavity (100) into two working half cavities, and the two working half cavities are respectively communicated with the two buffer cavities (200) at the two ends;
the buffering device comprises two buffering blocks (5), wherein the two buffering blocks (5) are respectively fixed on two side surfaces of the piston (4), the outer diameter of each buffering block (5) is slightly smaller than the cavity diameter of the buffering cavity (200), when the piston (4) slides to a left limit position or a right limit position, one of the buffering blocks (5) is inserted into the corresponding buffering cavity (200), and the outer surface of each buffering block (5) and the inner surface of each buffering cavity (200) form an annular damping hole (300).
2. The headband cushion cylinder according to claim 1, wherein the side wall of the cushion block (5) facing one end of the cushion chamber (200) is provided with a guide slope (51), and the guide slope (51) is inclined toward the center of the cushion block (5) in a direction facing the cushion chamber (200).
3. The cylinder as claimed in claim 2, wherein the guide slope (51) has an inclination angle of 3-10 °.
4. The two-head belt buffer cylinder according to claim 1, characterized in that the cavity diameters of the two buffer cavities (200) are different, and the outer diameters of the two buffer blocks (5) are respectively matched with the cavity diameters of the two buffer cavities (200).
5. The two-head belt buffer oil cylinder according to claim 1, further comprising a piston rod (6), wherein piston holes are formed in the centers of the piston (4) and the two buffer blocks (5), the piston (4) and the two buffer blocks (5) are fixed at one end of the piston rod (6) in a sleeved mode, and two side faces of the piston (4) are respectively abutted to the two buffer blocks (5).
6. The two-head buffer oil cylinder according to claim 5, wherein the piston hole is a threaded hole, one end of the piston rod (6) is provided with an external thread, and the piston rod (6) is fixed on the piston (4) and the two buffer blocks (5) through threaded connection.
7. The two-head belt buffer oil cylinder according to claim 5, wherein the cylinder body assembly comprises a cylinder base (1), a cylinder cover (2) and a cylinder barrel (3) clamped between the cylinder base (1) and the cylinder cover (2), annular bosses are arranged at one ends of the cylinder base (1) and the cylinder cover (2), the cylinder barrel (3) is hermetically sleeved on the two annular bosses, and the inner surfaces of the annular bosses are surrounded to form the buffer cavity (200).
8. The two-head belt buffer oil cylinder according to claim 7, wherein oil through ports are respectively formed in the side walls of the cylinder base (1) and the cylinder cover (2), and the two oil through ports are respectively communicated with the two buffer cavities (200).
9. The two-head belt buffer oil cylinder according to claim 7, characterized in that a through hole is arranged in the middle of the cylinder cover (2), the through hole is communicated with one of the buffer cavities (200), and the piston rod (6) passes through the through hole and extends out of the cylinder body assembly.
10. The cylinder according to claim 9, wherein a sealing device is provided between the side wall of the through hole and the piston rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732731.5A CN113446285A (en) | 2021-06-30 | 2021-06-30 | Two-head belt buffer oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732731.5A CN113446285A (en) | 2021-06-30 | 2021-06-30 | Two-head belt buffer oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113446285A true CN113446285A (en) | 2021-09-28 |
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ID=77814313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110732731.5A Pending CN113446285A (en) | 2021-06-30 | 2021-06-30 | Two-head belt buffer oil cylinder |
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| Country | Link |
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| CN (1) | CN113446285A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116857254A (en) * | 2023-09-01 | 2023-10-10 | 常州亿麟电气科技有限公司 | Electric hydraulic system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201636117U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Adjustable gap-buffer hydraulic cylinder |
| CN201636116U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Gap cushioning hydraulic cylinder |
| CN209041211U (en) * | 2018-10-18 | 2019-06-28 | 浙江华昌液压机械有限公司 | A kind of side shifter oil cylinder |
| CN213392932U (en) * | 2020-08-20 | 2021-06-08 | 无锡市世邦机械制造有限公司 | Stable form hydro-cylinder piston buffer structure |
-
2021
- 2021-06-30 CN CN202110732731.5A patent/CN113446285A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201636117U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Adjustable gap-buffer hydraulic cylinder |
| CN201636116U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Gap cushioning hydraulic cylinder |
| CN209041211U (en) * | 2018-10-18 | 2019-06-28 | 浙江华昌液压机械有限公司 | A kind of side shifter oil cylinder |
| CN213392932U (en) * | 2020-08-20 | 2021-06-08 | 无锡市世邦机械制造有限公司 | Stable form hydro-cylinder piston buffer structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116857254A (en) * | 2023-09-01 | 2023-10-10 | 常州亿麟电气科技有限公司 | Electric hydraulic system |
| CN116857254B (en) * | 2023-09-01 | 2023-12-15 | 常州亿麟电气科技有限公司 | Electric hydraulic system |
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