CN113027856A - Single-rod symmetrical hydraulic oil cylinder of electric hydrostatic actuator system - Google Patents
Single-rod symmetrical hydraulic oil cylinder of electric hydrostatic actuator system Download PDFInfo
- Publication number
- CN113027856A CN113027856A CN202110267803.3A CN202110267803A CN113027856A CN 113027856 A CN113027856 A CN 113027856A CN 202110267803 A CN202110267803 A CN 202110267803A CN 113027856 A CN113027856 A CN 113027856A
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- sleeve
- actuator system
- wall
- rod
- hydrostatic actuator
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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
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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
- F15B15/1428—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
- F15B15/20—Other details, e.g. assembly with regulating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
The invention discloses a single-rod symmetrical hydraulic oil cylinder of an electric hydrostatic actuator system, which comprises a cylinder barrel, wherein a telescopic rod penetrates through the inner wall of one side of the cylinder barrel; the surface of one side of the cylinder barrel is movably connected with a sleeve, and the telescopic rod penetrates through the interior of the sleeve; the sleeve is internally provided with a cavity which is symmetrical up and down; the outer walls of two sides of the sleeve are all provided with threaded rods in a penetrating mode through bolts, the edges of the threaded rods are in sealing fit with the inner wall of the sleeve, the threaded rods extend to the cavity and are connected with an extrusion plate through a bearing at the tail end, one side surface of the extrusion plate is provided with a sponge block, one side surface of the sponge block is fixedly provided with an oil injection pipe, the oil injection pipe extends to the outer wall of one side of the sleeve, and a dust cover covers the tail end of the oil injection pipe; the telescopic rod is characterized in that oil outlets which are uniformly distributed and correspond to the cavities are formed in the two sides of the sleeve, balls are rotatably connected to the inner portions of the oil outlets, and one side surface of each ball is tightly attached to the outer wall of one side of the telescopic rod.
Description
Technical Field
The invention relates to the technical field of hydraulic oil cylinders, in particular to a single-rod symmetrical hydraulic oil cylinder of an electric hydrostatic actuator system.
Background
The hydraulic cylinder is an energy conversion device which converts hydraulic energy into mechanical energy for reciprocating linear motion. The hydraulic cylinder generally comprises a cylinder barrel, a cylinder bottom, a cylinder top, a piston rod and a piston, wherein the cylinder bottom and the cylinder top are respectively arranged at two outlets at the bottom and the top of the cylinder barrel, a first end (an extending end) of the piston rod is movably arranged in the cylinder barrel through the piston, a second end of the piston rod is positioned at the outer side of the cylinder top, a rodless cavity is formed between the first end of the piston rod and the piston and between the piston and the cylinder bottom, and a rod cavity is formed between the first end of the piston rod and the piston and between the first end of the piston rod and the cylinder top, so that when oil is fed into the rodless cavity and oil is returned from;
however, the existing hydraulic oil cylinder still has some disadvantages, and after the cylinder barrel is used for a long time, dust falling from the outside can be accumulated at the telescopic ends of the cylinder barrel and the telescopic rod, so that the telescopic rod can be slow in speed and slightly blocked during telescopic movement, and therefore the single-rod symmetrical hydraulic oil cylinder of the electric hydrostatic actuator system is provided.
Disclosure of Invention
In order to overcome the defects of the prior art, the single-rod symmetric hydraulic oil cylinder of the electric hydrostatic actuator system provided by the invention can regularly lubricate the telescopic ends of the cylinder barrel and the telescopic rod through the arranged nursing mechanism, so that the normal telescopic motion between the cylinder barrel and the telescopic rod is ensured, meanwhile, the accumulation of dust is also prevented, and the practicability and convenience of the cylinder barrel in use are improved.
In order to solve the technical problems, the invention provides the following technical scheme: a single-rod symmetrical hydraulic oil cylinder of an electric hydrostatic actuator system comprises a cylinder barrel, wherein a telescopic rod penetrates through the inner wall of one side of the cylinder barrel; the surface of one side of the cylinder barrel is movably connected with a sleeve, and the telescopic rod penetrates through the interior of the sleeve; the sleeve is internally provided with a cavity which is symmetrical up and down; the outer walls of two sides of the sleeve are all provided with threaded rods in a penetrating mode through bolts, the edges of the threaded rods are in sealing fit with the inner wall of the sleeve, the threaded rods extend to the cavity and are connected with an extrusion plate through a bearing at the tail end, one side surface of the extrusion plate is provided with a sponge block, one side surface of the sponge block is fixedly provided with an oil injection pipe, the oil injection pipe extends to the outer wall of one side of the sleeve, and a dust cover covers the tail end of the oil injection pipe; the telescopic rod is characterized in that oil outlets which are uniformly distributed and correspond to the cavities are formed in the two sides of the sleeve, balls are rotatably connected to the inner portions of the oil outlets, and one side surface of each ball is tightly attached to the outer wall of one side of the telescopic rod.
As a preferred technical scheme of the invention, symmetrical slide blocks are fixed on the surface of one side of the cylinder barrel; the surface of one side of the sleeve is provided with symmetrical sliding grooves which are in sliding fit with the sliding blocks, and the front outer wall and the rear outer wall of the sleeve are both threaded with fixing bolts; and a thread clamping groove clamped with the thread of the fixing bolt is formed in the surface of one side of the sliding block.
As a preferable technical scheme of the invention, a handle is fixed at the tail end of the threaded rod, which is positioned on the outer wall of the sleeve, and the handle is made of resin.
As a preferred technical scheme of the invention, a protective sleeve is sleeved on the outer surface of the handle, and the protective sleeve is made of rubber.
As a preferred technical scheme of the invention, a protective sleeve is sleeved on the outer surface of the handle, and the protective sleeve is made of rubber.
As a preferable technical scheme of the invention, a cavity is formed in the ball, and a bearing block is fixed in the cavity.
As a preferred technical scheme of the invention, the outer surface of the sleeve is sleeved with an anti-abrasion sleeve, and the anti-abrasion sleeve is made of soft rubber.
As a preferred technical scheme of the invention, the outer surface of the anti-abrasion sleeve is fixed with anti-slip strips which are distributed in an S shape at equal intervals.
As a preferable technical scheme of the invention, the bottom of the handle is provided with symmetrical arc-shaped grooves, and the inside of each arc-shaped groove is provided with anti-skid grains.
As a preferable technical scheme of the invention, the vertical sections of the sliding block and the sliding groove are rectangular, and the width of the sliding groove is twice of one point of the sliding block.
Compared with the prior art, the invention can achieve the following beneficial effects:
1. through the arranged sleeve, the situation that dust falling from the outside can be accumulated at the telescopic ends of the cylinder barrel and the telescopic rod after the cylinder barrel is used for a long time is effectively avoided, so that the telescopic rod is possibly slow in speed and slightly blocked during telescopic motion, the telescopic ends of the cylinder barrel and the telescopic rod can be lubricated regularly, normal telescopic motion between the cylinder barrel and the telescopic rod is further ensured, meanwhile, the accumulation of dust is also prevented, and the practicability and convenience of the cylinder barrel during use are improved;
2. through the arranged fixing bolt, the surface of the sleeve is effectively prevented from being abraded to a certain degree after the sleeve is used for a long time, so that the lubricating effect of the sleeve can be realized, the sleeve can be conveniently and quickly detached and replaced at regular intervals, and the lubricating effect of the sleeve on the cylinder barrel and the telescopic end of the telescopic rod is further ensured;
drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of the cylinder and the sleeve of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of A of FIG. 2 according to the present invention;
FIG. 4 is a side view of the cylinder and the sleeve of FIG. 1 according to the present invention;
wherein: 1. a cylinder barrel; 2. a telescopic rod; 3. a sleeve; 4. a threaded rod; 5. a pressing plate; 6. a sponge block; 7. an oil filling pipe; 8. an oil outlet; 9. a ball bearing; 10. a slider; 11. a chute; 12. fixing the bolt; 13. and a thread clamping groove.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in fig. 1-3, a single-rod symmetric hydraulic cylinder of an electro-hydrostatic actuator system comprises a cylinder barrel 1, wherein an expansion rod 2 penetrates through the inner wall of one side of the cylinder barrel 1; the surface of one side of the cylinder barrel 1 is movably connected with a sleeve 3, and the telescopic rod 2 penetrates through the sleeve 3; a cavity which is symmetrical up and down is arranged in the sleeve 3; threaded rods 4 penetrate through the outer walls of the two sides of the sleeve 3 through bolts, the edges of the threaded rods 4 are in sealing fit with the inner wall of the sleeve 3, the threaded rods 4 extend to the cavity and are connected with an extrusion plate 5 through bearings at the tail ends, a sponge block 6 is arranged on the surface of one side of the extrusion plate 5, an oil injection pipe 7 is fixed on the surface of one side of the sponge block 6, the oil injection pipe 7 extends to the outer wall of one side of the sleeve 3, and a dust cover covers the tail ends; oil outlets 8 which are uniformly distributed and correspond to the cavities are formed in the two sides of the sleeve 3, balls 9 are rotatably connected to the inner portions of the oil outlets 8, and one side surface of each ball 9 is tightly attached to the outer wall of one side of the telescopic rod 2;
when the telescopic ends of the cylinder barrel 1 and the telescopic rod 2 are lubricated, firstly, the threaded rod 4 is twisted by the handle to the direction close to the telescopic rod 2, so that the extrusion plate 5 can move to the direction close to the sponge block 6 until the extrusion plate 5 is moved to extrude the lubricating oil in the cavity of the sponge block 6, then, the rotation of the threaded rod 4 can be stopped, the extruded lubricating oil can be guided to the outer surface of the ball 9 through the arranged oil outlet 8, then, when the telescopic rod 2 performs telescopic movement, the ball 9 and the telescopic rod 2 can generate friction, the lubricating oil on the ball 9 can be smeared on the outer wall of the telescopic rod 2, so that the telescopic ends of the telescopic rod 2 and the cylinder barrel 1 can be lubricated regularly, the telescopic ends of the cylinder barrel 1 and the telescopic rod 2 can be lubricated regularly, and then, the normal telescopic movement between the cylinder barrel 1 and the telescopic rod 2 is ensured, meanwhile, dust accumulation is prevented, and the practicability and convenience of the cylinder barrel 1 in use are improved.
In other embodiments, the present embodiment discloses the installation position of the connection mechanism, as shown in fig. 1 and 4, symmetrical sliders 10 are fixed on one side surface of the cylinder 1; the surface of one side of the sleeve 3 is provided with symmetrical sliding grooves 11 which are in sliding fit with the sliding blocks 10, and the front outer wall and the rear outer wall of the sleeve 3 are both threaded with fixing bolts 12; a thread clamping groove 13 which is in thread clamping with the fixing bolt 12 is formed in the surface of one side of the sliding block 10;
when changing sleeve pipe 3, at first twist two sets of fixing bolt 12 respectively towards anticlockwise, make fixing bolt 12's end can twist out the inside of screw thread draw-in groove 13, then at this moment alright open cylinder 1 and sleeve pipe 3's fixed state, then slide sleeve pipe 3 in the outside of slider 10 to the direction of keeping away from cylinder 1 through spout 11, make the inside of slider 10 roll-off spout 11, then just at this moment can dismantle sleeve pipe 3 from cylinder 1, thereby realized can be convenient, quick carry out periodic dismantlement to sleeve pipe 3, change, then ensured the lubrication action of sleeve pipe 3 to cylinder 1 and the flexible end of telescopic link 2.
In other embodiments, the present embodiment discloses the mounting position of the handle, as shown in fig. 2, the handle is fixed at the end of the threaded rod 4 on the outer wall of the sleeve 3, and the handle is made of resin;
so that the worker can more conveniently rotate the threaded rod 4 and save labor.
In other embodiments, the embodiment discloses an installation position of the protective sleeve, as shown in fig. 2, the protective sleeve is sleeved on the outer surface of the handle, and the protective sleeve is made of rubber;
the surface of the handle can be better protected, abrasion caused by friction is reduced, and the service life of the handle is prolonged.
In other embodiments, the present embodiment discloses the opening positions of the micropores, as shown in fig. 2, the outer surface of the sponge block 6 is provided with uniformly distributed micropores, and the micropores are hexagonal;
so that the lubricating oil in the cavity can be guided out, and the lubricating effect on the telescopic ends of the cylinder barrel 1 and the telescopic rod 2 is ensured.
In other embodiments, the present embodiment discloses the mounting positions of the cavity and the bearing block, as shown in fig. 2, the ball 9 has a cavity therein, and the bearing block is fixed in the cavity;
so that the lubricating oil on the surface of the ball 9 can be better smeared on the outer wall of the telescopic rod 2.
In other embodiments, the present embodiment discloses an installation position of an anti-wear sleeve, as shown in fig. 2, the outer surface of the casing 3 is sleeved with the anti-wear sleeve, and the anti-wear sleeve is made of soft rubber;
the outer wall of the sleeve 3 can be prevented from being collided and protected, and the service life of the sleeve 3 can be prolonged.
In other embodiments, the embodiment discloses the installation positions of the anti-skid strips, as shown in fig. 2, the anti-skid strips are fixed on the outer surface of the anti-wear sleeve, and are distributed in an S-shaped equidistant manner;
the anti-skid sleeve has anti-skid performance when being installed by workers, and is more convenient to install on the outer wall of the sleeve 3.
In other embodiments, the embodiment discloses the forming positions of the arc-shaped grooves and the anti-slip patterns, as shown in fig. 2, the bottom of the handle is formed with symmetrical arc-shaped grooves, and the anti-slip patterns are formed inside the arc-shaped grooves;
the handle is better held by workers, and meanwhile, the handle has certain anti-skid performance when used.
In other embodiments, the present embodiment discloses the structural shapes of the sliding block 10 and the sliding groove 11, as shown in fig. 4, the vertical sections of the sliding block 10 and the sliding groove 11 are both rectangular, and the width of the sliding groove 11 is twice of one point of the sliding block 10;
so that the disassembly operation of the worker when replacing the sleeve 3 can be facilitated.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a single play pole symmetry hydraulic cylinder of electronic hydrostatic actuator system, includes cylinder (1), its characterized in that: an expansion link (2) penetrates through the inner wall of one side of the cylinder barrel (1); the surface of one side of the cylinder barrel (1) is movably connected with a sleeve (3), and the telescopic rod (2) penetrates through the sleeve (3); the interior of the sleeve (3) is provided with vertically symmetrical cavities; the outer walls of two sides of the sleeve (3) are all provided with threaded rods (4) in a penetrating mode through bolts, the edge of each threaded rod (4) is in sealing fit with the inner wall of the sleeve (3), the threaded rods (4) extend to the cavity and are connected with an extrusion plate (5) through bearings at the tail ends, a sponge block (6) is arranged on the surface of one side of each extrusion plate (5), an oil injection pipe (7) is fixed on the surface of one side of each sponge block (6), the oil injection pipe (7) extends to the outer wall of one side of the sleeve (3), and a dust cover covers the tail ends of the oil injection pipe; the oil outlets (8) which are uniformly distributed and correspond to the cavities are formed in the two sides of the sleeve (3), the balls (9) are rotatably connected to the inner portions of the oil outlets (8), and the surface of one side of each ball (9) is tightly attached to the outer wall of one side of the telescopic rod (2).
2. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 1, wherein: symmetrical sliding blocks (10) are fixed on the surface of one side of the cylinder barrel (1); the surface of one side of the sleeve (3) is provided with symmetrical sliding grooves (11) which are in sliding fit with the sliding blocks (10), and the front outer wall and the rear outer wall of the sleeve (3) are both threaded with fixing bolts (12); and a thread clamping groove (13) which is clamped with the fixing bolt (12) in a thread manner is formed in the surface of one side of the sliding block (10).
3. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 1, wherein: the threaded rod (4) is located the end of sleeve pipe (3) outer wall and is fixed with the handle, the handle is the resin material.
4. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 3, wherein: the outer surface of the handle is sleeved with a protective sleeve, and the protective sleeve is made of rubber.
5. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 1, wherein: the outer surface of the handle is sleeved with a protective sleeve, and the protective sleeve is made of rubber.
6. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 1, wherein: a cavity is formed in the ball (9), and a bearing block is fixed in the cavity.
7. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 1, wherein: the outer surface of the sleeve (3) is sleeved with an anti-abrasion sleeve, and the anti-abrasion sleeve is made of soft rubber.
8. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 7, wherein: the outer surface of the anti-abrasion sleeve is fixed with anti-slip strips, and the anti-slip strips are distributed in an S shape at equal intervals.
9. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 3, wherein: the bottom of the handle is provided with symmetrical arc-shaped grooves, and anti-skid grains are arranged inside the arc-shaped grooves.
10. The single-rod symmetric hydraulic ram of an electro-hydrostatic actuator system of claim 2, wherein: the vertical sections of the sliding block (10) and the sliding groove (11) are rectangular, and the width of the sliding groove (11) is twice of that of one point of the sliding block (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267803.3A CN113027856A (en) | 2021-03-12 | 2021-03-12 | Single-rod symmetrical hydraulic oil cylinder of electric hydrostatic actuator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267803.3A CN113027856A (en) | 2021-03-12 | 2021-03-12 | Single-rod symmetrical hydraulic oil cylinder of electric hydrostatic actuator system |
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| Publication Number | Publication Date |
|---|---|
| CN113027856A true CN113027856A (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110267803.3A Pending CN113027856A (en) | 2021-03-12 | 2021-03-12 | Single-rod symmetrical hydraulic oil cylinder of electric hydrostatic actuator system |
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| CN (1) | CN113027856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606216A (en) * | 2021-08-05 | 2021-11-05 | 新疆八一钢铁股份有限公司 | Adjustable hydraulic cylinder push rod |
| CN113606216B (en) * | 2021-08-05 | 2024-07-26 | 新疆八一钢铁股份有限公司 | Adjustable hydraulic cylinder push rod |
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| KR20180032869A (en) * | 2016-09-23 | 2018-04-02 | (주)기흥기계 | saddle prevention device of a machine tool using a hydraulic cylinder lubrication |
| CN110848203A (en) * | 2019-11-26 | 2020-02-28 | 衡阳市林肯液压设备有限公司 | Guide sleeve for hydraulic cylinder |
| CN211009354U (en) * | 2019-08-25 | 2020-07-14 | 青岛三弘精密器械有限公司 | Small-sized cylinder protection device for automatic production equipment |
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| CN112117715A (en) * | 2020-10-13 | 2020-12-22 | 国网河南省电力公司唐河县供电公司 | Categorised auxiliary device of power cable |
| CN212377012U (en) * | 2020-04-21 | 2021-01-19 | 无锡宏锦液压机械有限公司 | Hollow single-rod piston type hydraulic oil cylinder |
| CN212643220U (en) * | 2020-07-24 | 2021-03-02 | 浙江星辰气动有限公司 | Small self-lubricating cylinder |
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2021
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|---|---|---|---|---|
| KR20180032869A (en) * | 2016-09-23 | 2018-04-02 | (주)기흥기계 | saddle prevention device of a machine tool using a hydraulic cylinder lubrication |
| CN211009354U (en) * | 2019-08-25 | 2020-07-14 | 青岛三弘精密器械有限公司 | Small-sized cylinder protection device for automatic production equipment |
| CN110848203A (en) * | 2019-11-26 | 2020-02-28 | 衡阳市林肯液压设备有限公司 | Guide sleeve for hydraulic cylinder |
| CN211464445U (en) * | 2019-12-16 | 2020-09-11 | 青岛迅力科技有限公司 | Special press in duplex position |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113606216A (en) * | 2021-08-05 | 2021-11-05 | 新疆八一钢铁股份有限公司 | Adjustable hydraulic cylinder push rod |
| CN113606216B (en) * | 2021-08-05 | 2024-07-26 | 新疆八一钢铁股份有限公司 | Adjustable hydraulic cylinder push rod |
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Application publication date: 20210625 |