CN110748525B - Large-diameter hydraulic oil cylinder with uniformly distributed stress - Google Patents
Large-diameter hydraulic oil cylinder with uniformly distributed stress Download PDFInfo
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- CN110748525B CN110748525B CN201910992894.XA CN201910992894A CN110748525B CN 110748525 B CN110748525 B CN 110748525B CN 201910992894 A CN201910992894 A CN 201910992894A CN 110748525 B CN110748525 B CN 110748525B
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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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
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- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
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Abstract
The invention discloses a large-diameter hydraulic oil cylinder with uniformly distributed stress, which structurally comprises a positioning rod, a hydraulic oil cylinder main body, a first connecting buckle, a hydraulic piston rod and a second connecting buckle, wherein the hydraulic oil cylinder main body is of a cylindrical structure, the positioning rod is abutted against the hydraulic oil cylinder main body, the first connecting buckle is welded with the hydraulic oil cylinder main body, and the large-diameter hydraulic oil cylinder is matched with a hydraulic oil driving structure through a hydraulic oil distributor.
Description
Technical Field
The invention relates to the field of hydraulic equipment, in particular to a large-diameter hydraulic oil cylinder with uniformly distributed stress.
Background
The hydraulic cylinder is one of common hydraulic equipment in our life, has the hydraulic cylinder of different models size according to the use scene of difference simultaneously, and in order to promote hydraulic cylinder's bearing capacity, hydraulic cylinder's diameter is also bigger and bigger, but the present technical consideration is not perfect enough, has following shortcoming: traditional hydraulic cylinder is at the during operation, the oilhole input and the flexible of output promotion piston rod through both ends about the hydro-cylinder, but the great hydro-cylinder of diameter is in the use, because the hydro-cylinder section diameter is great, consequently, hydraulic oil distributes inequality when flowing in from the oilhole, it is great then to lead to the piston piece to be close to the hydraulic pressure that the oilhole position received, it is inhomogeneous to arouse piston piece glide plane pressurized, after the live time is longer, can lead to the piston piece to take place slope and wearing and tearing to one side, and then influence hydraulic cylinder's leakproofness, lead to hydraulic cylinder work unusual, hydraulic cylinder's life is shortened.
Disclosure of Invention
Aiming at the problems, the invention provides a large-diameter hydraulic oil cylinder with uniformly distributed stress.
In order to achieve the purpose, the invention is realized by the following technical scheme: a large-diameter hydraulic oil cylinder with uniformly distributed stress structurally comprises a positioning rod, a hydraulic oil cylinder body, a first connecting buckle, a hydraulic piston rod and a second connecting buckle, wherein the hydraulic oil cylinder body is of a cylindrical structure, the positioning rod is abutted against the hydraulic oil cylinder body, the first connecting buckle is welded with the hydraulic oil cylinder body, the hydraulic piston rod is connected to the middle of the hydraulic oil cylinder body in a penetrating mode, the second connecting buckle is connected with the hydraulic piston rod through threads, the hydraulic oil cylinder body is composed of a hydraulic cylinder body, a hydraulic oil input structure, a hydraulic oil bin, a piston block, a hydraulic oil output structure and a sealing ring, the hydraulic cylinder body is of a hollow cylindrical structure, the hydraulic oil input structure and the hydraulic cylinder body are of an integrated structure, the hydraulic oil bin is nested in the hydraulic cylinder body, the piston block is attached to the hydraulic, the hydraulic oil output structure is located at the right end of the hydraulic cylinder body, and the sealing ring is attached to the hydraulic piston rod.
As a further improvement of the hydraulic cylinder, the hydraulic oil input structure is composed of a hydraulic oil distributor, a hydraulic driving structure, an eddy forming device and an input structure outer cover, the input structure outer cover and the hydraulic cylinder body form an integrated structure, the hydraulic oil distributor is nested on the left side of the input structure outer cover, the hydraulic driving structure and the hydraulic oil distributor are communicated with each other, and the eddy forming device is installed on the right side of the hydraulic driving structure.
The hydraulic oil distributor is further improved by comprising a hydraulic oil connecting pipeline, an even distributor, a fixed disc, an even distributor mounting buckle and a conveying hole, wherein the fixed disc is mounted in front of the hydraulic driving structure, the hydraulic oil connecting pipeline is connected to the left side of the input structure outer cover in a penetrating mode, the even distributor mounting buckle is uniformly distributed on the surface of the fixed disc in an annular array mode, the even distributor is attached to the even distributor mounting buckle, and the conveying hole is communicated with the even distributor.
The hydraulic driving structure is further improved by comprising a spiral spring, a driving structure fixing frame, a driving disc, a hydraulic oil through hole, a guide shaft and a hydraulic driving plate, wherein the driving structure fixing frame is nested in the middle of the input structure outer cover, the guide shaft is arranged in the driving structure fixing frame, the driving disc is buckled with the guide shaft, the spiral spring is respectively attached to the driving structure fixing frame and the driving disc, the hydraulic oil through hole is connected to the periphery of the surface of the driving disc in a penetrating manner, and the hydraulic driving plate is arranged between the hydraulic oil through holes.
As a further improvement of the invention, the vortex forming device comprises a telescopic guide frame, an adjusting shaft, a limiting block, vortex blades and drainage grooves, wherein the telescopic guide frame is buckled with a hydraulic driving structure, the limiting block is in clearance fit with the telescopic guide frame, the adjusting shaft is buckled with the limiting block, the vortex blades are mechanically connected with the adjusting shaft, and the drainage grooves are equidistantly and uniformly distributed on the surfaces of the vortex blades.
As a further improvement of the invention, the left side and the right side of the piston block are of a circular truncated cone structure which is concave inwards, so that when hydraulic oil is filled, hydraulic thrust is converged in the middle of the piston block, the formed thrust is larger, and the stress is more uniform.
As a further improvement of the invention, the eight drainage grooves are spirally distributed on the surface of the vortex blade, so that a clockwise rotating vortex is formed after hydraulic oil passes through the drainage grooves, and the thrust and the flow speed of the hydraulic oil are accelerated.
As a further improvement of the invention, the hydraulic drive plate is positioned between the hydraulic oil through holes on the front surface and the rear surface of the drive plate and is of an inclined plane structure.
As a further improvement of the vortex vane.
The invention has the beneficial effects that: the major diameter hydraulic cylinder passes through hydraulic oil distributor, hydraulic drive structure and mutually supports, and the thrust to the piston piece is more even when hydraulic oil input, and the effectual piston piece glide plane pressurized of having avoided is inhomogeneous, leads to the piston piece to the side slope and the condition of accelerated wear then, has guaranteed hydraulic cylinder's leakproofness and has prolonged hydraulic cylinder's life.
When the hydraulic oil input structure is used, hydraulic oil uniformly flows into the conveying holes radially and peripherally through the uniform distributor after flowing in from the hydraulic oil connecting pipeline, when all the conveying holes are completely filled with the hydraulic oil, the pressure of the hydraulic oil pushes the hydraulic driving plate to form transverse thrust to drive the driving plate to rotate anticlockwise along the guide shaft, and further the hydraulic oil through holes are communicated with the conveying holes, so that the hydraulic oil flows into the hydraulic oil bin through the hydraulic oil through holes and the conveying holes and generates rightward thrust to the left side of the piston block, and meanwhile, because the hydraulic oil through holes are annularly distributed, the thrust borne by the piston block is uniformly distributed, and after the hydraulic oil is discharged from the hydraulic oil through holes, the hydraulic oil pushes the vortex blades to expand rightwards along the adjusting shaft, and simultaneously, under the action of the drainage grooves, the hydraulic oil flows in a clockwise vortex mode, the flow rate and the thrust of the hydraulic oil are accelerated, and the, the service life of the hydraulic oil cylinder is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a large-diameter hydraulic cylinder with uniformly distributed stress according to the present invention.
FIG. 2 is a schematic structural diagram of the interior of the hydraulic cylinder body of the present invention.
Fig. 3 is a detailed structural schematic diagram of a hydraulic oil input structure of the present invention.
Fig. 4 is a left side view of the hydraulic oil distributor according to the present invention.
Fig. 5 is a left side view of the hydraulic driving structure of the present invention.
Fig. 6 is a schematic three-dimensional structure of a driving disc according to the present invention.
FIG. 7 is a detailed structural diagram of the vortex forming apparatus of the present invention.
FIG. 8 is a right view of the vortex blade of the present invention.
In the figure: a positioning rod-1, a hydraulic oil cylinder body-2, a first connecting buckle-3, a hydraulic piston rod-4, a second connecting buckle-5, a hydraulic cylinder body-2 a, a hydraulic oil input structure-2 b, a hydraulic oil bin-2 c, a piston block-2 d, a hydraulic oil output structure-2 e, a sealing ring-2 f, a hydraulic oil distributor-b 1, a hydraulic drive structure-b 2, an eddy current forming device-b 3, an input structure outer cover-b 4, a hydraulic oil connecting pipeline-b 11, a uniform distributor-b 12, a fixed disk-b 13, a uniform distributor mounting buckle-b 14, a conveying hole-b 15, a spiral spring-b 21, a drive structure fixing frame-b 22, a drive disk-b 23, a hydraulic oil through hole-b 24, a guide shaft-b 25, a hydraulic drive plate-b 26, A telescopic guide frame-b 31, an adjusting shaft-b 32, a limit block-b 33, a vortex blade-b 34 and a drainage groove-b 35.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, fig. 1 to 8 schematically show the structure of the large-diameter hydraulic oil cylinder of the embodiment of the invention, and the invention is further explained below by combining the specific embodiment.
Examples
Referring to fig. 1-2, the invention provides a large-diameter hydraulic cylinder with uniformly distributed stress, which comprises a positioning rod 1, a hydraulic cylinder body 2, a first connecting buckle 3, a hydraulic piston rod 4 and a second connecting buckle 5, wherein the hydraulic cylinder body 2 is of a cylindrical structure, the positioning rod 1 is abutted against the hydraulic cylinder body 2, the first connecting buckle 3 is welded with the hydraulic cylinder body 2, the hydraulic piston rod 4 is connected to the middle of the hydraulic cylinder body 2 in a penetrating manner, the second connecting buckle 5 is connected with the hydraulic piston rod 4 through a thread, the hydraulic cylinder body 2 is composed of a hydraulic cylinder body 2a, a hydraulic oil input structure 2b, a hydraulic oil bin 2c, a piston block 2d, a hydraulic oil output structure 2e and a sealing ring 2f, the hydraulic cylinder body 2a is of a hollow cylindrical structure, and the hydraulic cylinder body 2a and the hydraulic cylinder body 2b are of an integrated structure, hydraulic pressure oil bunker 2c nestification is inside hydraulic cylinder body 2a, piston block 2d and the laminating of hydraulic pressure oil bunker 2c, hydraulic oil output structure 2e is located hydraulic cylinder body 2a right-hand member, sealing washer 2f and the laminating of hydraulic piston rod 4. The left side and the right side of the piston block 2d are of a circular truncated cone structure which is concave inwards, so that hydraulic thrust is converged in the middle of the piston block 2d after hydraulic oil is poured into the piston block, the formed thrust is large, and meanwhile, the stress is more uniform.
Referring to fig. 3-4, the hydraulic oil input structure 2b is composed of a hydraulic oil distributor b1, a hydraulic driving structure b2, an eddy current forming device b3, and an input structure housing b4, the input structure housing b4 and the hydraulic cylinder body 2a form an integrated structure, the hydraulic oil distributor b1 is nested on the left side of the input structure housing b4, the hydraulic driving structure b2 and the hydraulic oil distributor b1 are mutually communicated, and the eddy current forming device b3 is installed on the right side of the hydraulic driving structure b 2. Hydraulic oil distributor b1 detains b14, delivery port b15 by hydraulic oil connecting line b11, equipartition ware b12, fixed disk b13, equipartition ware installation and constitutes, fixed disk b13 installs in hydraulic drive structure b2 the place ahead, hydraulic oil connecting line b11 through connection is in input structure dustcoat b4 left side, the equipartition ware installation is detained b14 and is annular array evenly distributed on fixed disk b13 surface, equipartition ware b12 detains b14 with the equipartition ware installation and laminates, delivery port b15 link up each other with equipartition ware b 12.
Referring to fig. 5-8, the hydraulic driving structure b2 is composed of a coil spring b21, a driving structure fixing frame b22, a driving disk b23, a hydraulic oil through hole b24, a guide shaft b25, and a hydraulic driving plate b26, the driving structure fixing frame b22 is nested in the middle of the input structure outer cover b4, the guide shaft b25 is installed in the driving structure fixing frame b22, the driving disk b23 and the guide shaft b25 are mutually buckled, the coil spring b21 is respectively attached to the driving structure fixing frame b22 and the driving disk b23, the hydraulic oil through hole b24 is connected around the surface of the driving disk b23, and the hydraulic driving plate b26 is installed between the hydraulic oil through holes b 24. Vortex forming device b3 comprises flexible guide frame b31, regulation axle b32, stopper b33, vortex blade b34, drainage groove b35, flexible guide frame b31 and hydraulic drive structure b2 lock, stopper b33 and flexible guide frame b31 adopt clearance fit, regulation axle b32 and stopper b33 lock, vortex blade b34 adopts mechanical connection with regulation axle b32, drainage groove b35 equidistance evenly distributed is on vortex blade b34 surface. Drainage groove b35 is equipped with eight and is the heliciform and distribute in vortex blade b34 surface, consequently forms clockwise pivoted vortex after hydraulic oil passes drainage groove b35 and flows for the thrust and the velocity of flow of hydraulic oil. The hydraulic drive plate b26 is located between the hydraulic oil through holes b24 on the front and back surfaces of the drive plate b23, and is in an inclined plane structure, so that when hydraulic oil flows into the conveying holes b15 from the uniform distributor b12, a transverse thrust is generated on the hydraulic drive plate b26, and the drive plate b23 is driven to rotate anticlockwise. The periphery of the vortex blade b34 is connected with the limiting block b33 through the adjusting shaft b32, so that when hydraulic oil is input, fluid flows from left to right, the vortex blade b34 is unfolded rightwards, and similarly, when the hydraulic oil is discharged, the vortex blade b34 is unfolded leftwards, and the fluid forms a vortex through the vortex blade b34, so that the flow speed is accelerated.
When the hydraulic pump works, hydraulic oil is input into the hydraulic oil input structure 2b through an external hydraulic pump, meanwhile, the hydraulic oil at the right end of the piston block 2d is discharged from the hydraulic oil output structure 2e, and then the piston block 2d and the hydraulic piston rod 4 are pushed by the hydraulic oil to extend out rightwards along the sealing ring 2 f.
When hydraulic oil flows from the hydraulic oil connecting pipeline b11, the hydraulic oil radially flows into the conveying holes b15 to the periphery through the uniform distributor b12, when each conveying hole b15 is completely filled with the hydraulic oil, the hydraulic oil pushes the hydraulic driving plate b26 to form transverse thrust, further the driving plate b23 is driven to extrude the spiral spring b21 along the guide shaft b25 and rotate anticlockwise, and after the driving plate b23 rotates anticlockwise, the hydraulic oil through holes b24 are communicated with the conveying holes b15, so that the hydraulic oil penetrates through the hydraulic oil through holes b24 and the conveying holes b15 and generates thrust on the piston block 2d, and the hydraulic oil through holes b24 are distributed annularly, so that the thrust borne by the piston block 2d is uniformly distributed, and the phenomenon that the piston block 2d is inclined is avoided; meanwhile, after the hydraulic oil is discharged from the hydraulic oil through hole b24, the hydraulic oil pushes the vortex blade b34 to expand rightwards along the adjusting shaft b32, and meanwhile, under the action of the drainage groove b35, the hydraulic oil flows in a clockwise vortex mode, so that the flow rate and the thrust of the hydraulic oil are accelerated.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
1. The utility model provides a stress evenly distributed's major diameter hydraulic cylinder, its structure includes locating lever (1), hydraulic cylinder main part (2), first connector link (3), hydraulic piston rod (4), second connector link (5), hydraulic cylinder main part (2) are cylindrical structure, locating lever (1) and hydraulic cylinder main part (2) are close together, first connector link (3) and hydraulic cylinder main part (2) welding are in the same place, hydraulic piston rod (4) through connection is in the middle of hydraulic cylinder main part (2), second connector link (5) are in the same place through threaded connection with hydraulic piston rod (4), its characterized in that:
the hydraulic oil cylinder is characterized in that the hydraulic oil cylinder body (2) is composed of a hydraulic cylinder body (2a), a hydraulic oil input structure (2b), a hydraulic oil bin (2c), a piston block (2d), a hydraulic oil output structure (2e) and a sealing ring (2f), the hydraulic cylinder body (2a) is of a hollow cylindrical structure, the hydraulic oil input structure (2b) and the hydraulic cylinder body (2a) form an integrated structure, the hydraulic oil bin (2c) is nested inside the hydraulic cylinder body (2a), the piston block (2d) is attached to the hydraulic oil bin (2c), the hydraulic oil output structure (2e) is located at the right end of the hydraulic cylinder body (2a), the sealing ring (2f) is attached to a hydraulic piston rod (4), and the hydraulic oil input structure (2b) is composed of a hydraulic oil distributor (b1), a hydraulic driving structure (b2), an eddy current forming device (b3) and an input structure outer cover (b4), the input structure outer cover (b4) and the hydraulic cylinder body (2a) form an integrated structure, the hydraulic oil distributor (b1) is nested on the left side of the input structure outer cover (b4), the hydraulic driving structure (b2) and the hydraulic oil distributor (b1) are communicated with each other, and the vortex forming device (b3) is installed on the right side of the hydraulic driving structure (b 2);
the hydraulic oil distributor (b1) is composed of a hydraulic oil connecting pipeline (b11), an equipartition device (b12), a fixed disc (b13), an equipartition device mounting buckle (b14) and a conveying hole (b15), wherein the fixed disc (b13) is mounted in front of a hydraulic drive structure (b2), the hydraulic oil connecting pipeline (b11) is connected to the left side of an input structure outer cover (b4) in a penetrating manner, the equipartition device mounting buckle (b14) is uniformly distributed on the surface of the fixed disc (b13) in an annular array manner, the equipartition device (b12) is attached to the equipartition device mounting buckle (b14), and the conveying hole (b15) and the equipartition device (b12) are mutually communicated;
the hydraulic driving structure (b2) comprises a spiral spring (b21), a driving structure fixing frame (b22), a driving disc (b23), a hydraulic oil through hole (b24), a guide shaft (b25) and a hydraulic driving plate (b26), wherein the driving structure fixing frame (b22) is nested in the middle of an input structure outer cover (b4), the guide shaft (b25) is installed in the driving structure fixing frame (b22), the driving disc (b23) and the guide shaft (b25) are buckled with each other, the spiral spring (b21) is respectively jointed with the driving structure fixing frame (b22) and the driving disc (b23), the hydraulic oil through hole (b24) is connected to the periphery of the surface of the driving disc (b23) in a penetrating manner, and the hydraulic driving plate (b26) is installed between through holes (b 24);
vortex forming device (b3) comprises flexible guide frame (b31), regulation axle (b32), stopper (b33), vortex blade (b34), drainage groove (b35), flexible guide frame (b31) and hydraulic drive structure (b2) lock, stopper (b33) and flexible guide frame (b31) adopt clearance fit, adjust axle (b32) and stopper (b33) lock, vortex blade (b34) and regulation axle (b32) adopt mechanical connection, drainage groove (b35) equidistance evenly distributed is on vortex blade (b34) surface.
2. A large diameter hydraulic ram with uniform stress distribution as claimed in claim 1 wherein: the left side and the right side of the piston block (2d) are of a circular truncated cone-shaped structure which is concave inwards.
3. A large diameter hydraulic ram with uniform stress distribution as claimed in claim 1 wherein: the eight drainage grooves (b35) are spirally distributed on the surface of the vortex blade (b 34).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910992894.XA CN110748525B (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder with uniformly distributed stress |
| CN202110129745.8A CN112855657A (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910992894.XA CN110748525B (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder with uniformly distributed stress |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110129745.8A Division CN112855657A (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder and using method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN110748525A CN110748525A (en) | 2020-02-04 |
| CN110748525B true CN110748525B (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910992894.XA Active CN110748525B (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder with uniformly distributed stress |
| CN202110129745.8A Withdrawn CN112855657A (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder and using method thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202110129745.8A Withdrawn CN112855657A (en) | 2019-10-18 | 2019-10-18 | Large-diameter hydraulic oil cylinder and using method thereof |
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| DE2636953C2 (en) * | 1976-08-17 | 1982-09-02 | Vsesojuznyj naučno-issledovatel'skij institut legkogo i tekstil'nogo mašinostroenija, Moskva | Distribution device for supplying compressed air to the swirl chamber nozzles of a device for producing a twisted yarn |
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| WO2010055764A1 (en) * | 2008-11-17 | 2010-05-20 | 株式会社小松製作所 | Cylinder tube, hydraulic cylinder with same, and method of manufacturing cylinder tube |
| CN103216486A (en) * | 2013-04-18 | 2013-07-24 | 湖南华菱湘潭钢铁有限公司 | Hydraulic cylinder |
| US10113655B2 (en) * | 2014-05-06 | 2018-10-30 | Gima S.P.A. | Rotary distributor |
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- 2019-10-18 CN CN202110129745.8A patent/CN112855657A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1948944A1 (en) * | 2005-11-14 | 2008-07-30 | Rolf Mieger | Double-acting plunger cylinder and drive for a gripper |
| KR20100134938A (en) * | 2009-06-16 | 2010-12-24 | 한국기계연구원 | Intensifier using injection structure for precision control |
| CN103342239A (en) * | 2013-06-27 | 2013-10-09 | 北京广厦环能科技有限公司 | Grid vibrating discharge powder heat exchanger |
| CN207583734U (en) * | 2017-11-28 | 2018-07-06 | 嘉兴赛能机电有限公司 | Hydraulic cylinder assembly |
| CN209539694U (en) * | 2017-12-29 | 2019-10-25 | 立德科技（天津）有限公司 | A kind of hydraulic cylinder with safeguard function |
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| CN109268349A (en) * | 2018-11-23 | 2019-01-25 | 北京精密机电控制设备研究所 | A kind of double redundancy hydraulic actuator with single-ended mechanical lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112855657A (en) | 2021-05-28 |
| CN110748525A (en) | 2020-02-04 |
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Inventor after: Chen Qiuhong Inventor before: Liao Fuai |
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Effective date of registration: 20231007 Address after: 053500 Jingxian County Wencheng Industrial Zone, Hengshui, Hebei Patentee after: HEBEI JULI HYDRAULIC EQUIPMENT Co.,Ltd. Address before: 510305, No. 905, Guangzhou Avenue, Guangzhou, Guangdong Patentee before: Liao Fuai |
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