CN115234541A - Hydraulic cylinder with high buffer performance - Google Patents
Hydraulic cylinder with high buffer performance Download PDFInfo
- Publication number
- CN115234541A CN115234541A CN202210829577.8A CN202210829577A CN115234541A CN 115234541 A CN115234541 A CN 115234541A CN 202210829577 A CN202210829577 A CN 202210829577A CN 115234541 A CN115234541 A CN 115234541A
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- China
- Prior art keywords
- cylinder
- sealing ring
- oil hole
- oil
- wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003921 oil Substances 0.000 claims abstract description 131
- 238000007789 sealing Methods 0.000 claims abstract description 82
- 230000003139 buffering effect Effects 0.000 claims abstract description 18
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/227—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having an auxiliary cushioning piston within the main piston or the cylinder end face
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a hydraulic oil cylinder with high buffering performance, which comprises a cylinder barrel and a buffering mechanism, wherein two ends of the cylinder barrel are fixedly provided with a cylinder cover used for sealing oil in the cylinder barrel, and the buffering mechanism comprises a first oil hole, a second oil hole and a third oil hole which are arranged in the cylinder cover and used for oil backflow. According to the invention, by arranging the buffer mechanism, when the shoulder is close to one cylinder cover, the first sealing ring and the second sealing ring are close to each other under the thrust of oil pressure and cling to the outer wall of the shoulder, so that the entering amount of oil from the first oil hole is reduced, and when the shoulder does not move any more, the first sealing ring and the second sealing ring return to the original positions under the elastic action of the elastic block and do not contact with the outer wall of the shoulder, so that the contact time of the first sealing ring and the shoulder and the contact time of the second sealing ring and the shoulder are reduced, and the service lives of the first sealing ring and the second sealing ring are prolonged.
Description
Technical Field
The invention relates to the field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with high buffering performance.
Background
The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging motion), and when the hydraulic actuating element is used for realizing reciprocating motion, a speed reducing device can be omitted, and the hydraulic actuating element has no transmission clearance and moves stably, so that the hydraulic actuating element is widely applied to various mechanical hydraulic systems.
The hydraulic cylinder is basically composed of a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffering device and an exhaust device, in order to prevent the piston from colliding with the cylinder cover in the process of fast moving, the buffering device is generally arranged in the hydraulic cylinder, and is generally divided into a convex shoulder, a first oil hole, a second oil hole and a sealing ring.
Disclosure of Invention
The invention aims to solve the problem that a sealing ring of an existing oil cylinder buffer device is easy to damage due to long-time friction with a convex shoulder, so that the buffer effect is reduced.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a hydraulic cylinder with high shock-absorbing capacity, includes the cylinder, the both ends fixed mounting of cylinder has and is used for carrying out the cylinder cap sealed to the inside fluid of cylinder, still includes buffer gear, and buffer gear is including seting up at the inside first oilhole, second oilhole, the third oilhole that is used for the fluid backward flow of cylinder cap, the central point that the cylinder cap was seted up to first oilhole puts the department, the both sides at first oilhole are seted up to the second oilhole, the third oilhole is seted up between first oilhole, second oilhole, and third oilhole and second oilhole intercommunication, first sealing ring, the second sealing ring that are used for increasing the leakproofness are installed to the inner chamber of first oilhole, first sealing ring is located one side of second sealing ring.
As a still further scheme of the invention: buffer gear is still including the connecting block that is used for providing drive power for the second sealing ring of fixed connection in second sealing ring bottom, the inboard of connecting block is connected with the elastic block that is used for providing elasticity that resets, the other end of elastic block and the inner chamber fixed connection of cylinder cap, the outer wall fixedly connected with of connecting block is used for providing the movable block of thrust.
As a still further scheme of the invention: the inside of cylinder still including the piston rod that is used for providing power, the one end fixedly connected with of piston rod is used for separating the piston piece of the inside fluid of cylinder, the one end fixedly connected with of piston piece is used for carrying out the convex shoulder that blocks up to first oilhole, the top of cylinder cap is connected with the circulating pipe that is used for carrying out the backward flow to the inside divided fluid of cylinder, the one end of circulating pipe is connected with the hydraulic pump.
As a still further scheme of the invention: the butt joint position of the first sealing ring and the second sealing ring is of an L-shaped structure.
As a still further scheme of the invention: the diameter of the inner wall of the first oil hole is larger than that of the inner wall of the second oil hole, a spherical diversion trench is formed in the joint of the first oil hole and the second oil hole, and the diameter of the inner wall of the spherical diversion trench is larger than that of the inner wall of the first oil hole.
As a still further scheme of the invention: the number of the connecting blocks, the elastic blocks and the movable blocks is two, and the connecting blocks, the elastic blocks and the movable blocks are symmetrically distributed in the inner cavity of the cylinder cover.
As a still further scheme of the invention: the outer wall of the movable block is in an inclined plane state, a sliding groove matched with the vertical moving track of the movable block and the connecting block is formed in an inner cavity of the cylinder cover, and the inner wall of the third oil hole is matched with the outer wall of the movable block.
As a still further scheme of the invention: the inner wall of the first oil hole is matched with the outer wall of the convex shoulder, and the outer wall of the piston block is matched with the inner cavity of the cylinder barrel.
Compared with the prior art, the invention has the beneficial effects that:
through setting up buffer gear, can make when the convex shoulder is close to a cylinder cap, first sealing ring, the second sealing ring is close to each other under the thrust of oil pressure, hug closely with the outer wall of convex shoulder, reduce the volume that fluid got into from first oilhole, when the convex shoulder no longer removes, first sealing ring, the normal position is got back to under the spring action of elastic block to the second sealing ring, no longer contact with the convex shoulder outer wall, thereby reduce first sealing ring, the contact time of second sealing ring and convex shoulder, first sealing ring has been prolonged, the life of second sealing ring.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the cylinder barrel of the present invention;
FIG. 3 is a schematic view of the shoulder of the present invention in a position away from the first oil hole;
FIG. 4 is a schematic view showing the structure of the shoulder of the present invention in a state of being close to the first oil hole.
In the figure: 1. a cylinder barrel; 2. a piston rod; 3. a cylinder cover; 4. a circulation pipe; 5. a buffer mechanism; 501. a piston block; 502. shouldering; 503. a first oil hole; 504. a second oil hole; 505. a third oil hole; 506. a first seal ring; 507. a second seal ring; 508. connecting blocks; 509. an elastic block; 510. a movable block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1 to 4, the hydraulic cylinder with high buffering performance according to the embodiment of the present invention includes a cylinder barrel 1, and cylinder covers 3 for sealing oil inside the cylinder barrel 1 are fixedly installed at two ends of the cylinder barrel 1; the cylinder head structure further comprises a buffer mechanism 5, the buffer mechanism 5 comprises a first oil hole 503, a second oil hole 504 and a third oil hole 505 which are arranged in the cylinder head 3 and used for oil to flow back, the first oil hole 503 is arranged at the center of the cylinder head 3, the second oil hole 504 is arranged on two sides of the first oil hole 503, the third oil hole 505 is arranged between the first oil hole 503 and the second oil hole 504, the third oil hole 505 is communicated with the second oil hole 504, a first sealing ring 506 and a second sealing ring 507 which are used for increasing sealing performance are installed in an inner cavity of the first oil hole 503, and the first sealing ring 506 is located on one side of the second sealing ring 507.
In this embodiment: when the cylinder barrel 1 starts to work, the separated oil in the cylinder barrel 1 enters another separated area in the cylinder barrel 1 through the first oil hole 503, the second oil hole 504 and the third oil hole 505 under extrusion force, when the movable parts of the buffer mechanism 5 gradually approach one cylinder head 3, the limit parts of the buffer mechanism 5 block the first oil hole 503, so that the oil cannot enter the inner cavity of the cylinder head 3 through the first oil hole 503, the rest oil enters the inner cavity of the cylinder head 3 through the second oil hole 504 and the third oil hole 505, and the flow speed of the oil is reduced because the inner wall diameters of the third oil hole 505 and the second oil hole 504 are smaller than the inner wall diameter of the first oil hole 503, and the moving speed of the movable parts is synchronously reduced, thereby achieving the purpose of buffering; meanwhile, the oil entering the third oil hole 505 moves to generate pressure, and the flowing oil provides thrust to the transmission parts of the buffer mechanism 5, so that the first sealing ring 506 and the second sealing ring 507 are close to each other under the thrust of the transmission parts and are tightly attached to the outer walls of the limiting parts, and the sealing performance of the first oil hole 503 and the limiting parts is further improved; when spacing spare part is no longer active, the pressure that produces when transmission spare part lost fluid and removes, first sealing ring 506, second sealing ring 507 will get back to the normal position, when spacing spare part shifts out then, will no longer laminate with first sealing ring 506, second sealing ring 507 outer wall, no longer participate in the sealing action, reduced the contact time of first sealing ring 506, second sealing ring 507 with spacing spare part, increased the life of first sealing ring 506, second sealing ring 507.
With reference to fig. 3-4, the buffering mechanism 5 further includes a connecting block 508 fixedly connected to a bottom end of the second sealing ring 507 and used for providing a driving force for the second sealing ring 507, an elastic block 509 used for providing a restoring elastic force is connected to an inner side of the connecting block 508, another end of the elastic block 509 is fixedly connected to an inner cavity of the cylinder cover 3, a movable block 510 used for providing an upward thrust is fixedly connected to an outer wall of the connecting block 508, the cylinder 1 further includes a piston rod 2 used for providing a driving force, one end of the piston rod 2 is fixedly connected to a piston block 501 used for separating oil in the cylinder 1, one end of the piston block 501 is fixedly connected to a shoulder 502 used for blocking the first oil hole 503, a circulating pipe 4 used for refluxing the oil separated in the cylinder 1 is connected to a top end of the cylinder cover 3, and one end of the circulating pipe 4 is connected to a hydraulic pump.
In this embodiment: when the cylinder barrel 1 starts to work, the piston rod 2, the piston block 501 and the shoulder 502 reciprocate along the inner cavity of the cylinder barrel 1 under the action of external force, separated oil in the cylinder barrel 1 enters another separated area in the cylinder barrel 1 through the first oil hole 503, the second oil hole 504, the third oil hole 505 and the circulating pipe 4 under extrusion force, the piston block 501 is used as a movable part and gradually approaches one cylinder head 3, the shoulder 502 is also used as a limiting part and is butted with the first oil hole 503 to block the first oil hole 503, so that the oil cannot enter the inner cavity of the cylinder head 3 through the first oil hole 503, the rest oil enters the inner cavity of the cylinder head 3 through the second oil hole 504 and the third oil hole 505, and the moving speed of the piston block 501 is reduced synchronously due to the fact that the diameters of the inner walls of the third oil hole 505 and the second oil hole 504 are smaller than the diameter of the inner wall of the first oil hole 503, so as to achieve the purpose of buffering; meanwhile, the oil entering the third oil hole 505 moves to generate pressure, the connecting block 508, the elastic block 509 and the movable block 510 as transmission parts are subjected to thrust generated by flowing oil and act on the outer wall of the inclined plane of the two movable blocks 510, the two movable blocks 510 approach each other under the thrust extrusion of the oil, and the elastic block 509 is subjected to extrusion force; meanwhile, the first sealing ring 506 and the second sealing ring 507 are close to each other under the thrust of the connecting block 508 and cling to the outer wall of the shoulder 502, so that the sealing performance of the first oil hole 503 and the shoulder 502 is further improved; when the shoulder 502 is no longer movable, the movable block 510 loses the pressure generated when the oil moves, and when the shoulder 502 is reset, the first sealing ring 506 and the second sealing ring 507 return to the original positions, so that when the shoulder 502 is moved out, the first sealing ring 506 and the second sealing ring 507 are no longer attached to the outer walls of the first sealing ring 506 and the second sealing ring 507 and do not participate in the sealing action, the contact time between the first sealing ring 506 and the second sealing ring 507 and limiting parts is reduced, and the service lives of the first sealing ring 506 and the second sealing ring 507 are prolonged; it should be noted that when the shoulder 502 stops moving, the oil inside the cylinder 1 will not move any more, the thrust provided to the movable block 510 will also disappear, the thrust received by the first and second sealing rings 506 and 507 will also disappear, and there will be no space for the oil to flow, so that the movable block 510 will remain in this position all the time, when the shoulder 502 moves in the opposite direction, the oil will leave a space, so that the movable block 510 will return under the elastic force of the elastic block 509, and the first and second sealing rings 506 and 507 will return together with the movable block 510 under the elastic force of the elastic block 509.
Please refer to fig. 3-4, the joint position of the first seal ring 506 and the second seal ring 507 is an "L" shaped structure, the diameter of the inner wall of the first oil hole 503 is larger than the diameter of the inner wall of the second oil hole 504, the joint position of the first oil hole 503 and the second oil hole 504 is provided with a spherical diversion trench, the diameter of the inner wall of the spherical diversion trench is larger than the diameter of the inner wall of the first oil hole 503, the number of the connecting blocks 508, the elastic blocks 509 and the movable blocks 510 is two, the two connecting blocks 508, the elastic blocks 509 and the movable blocks 510 are symmetrically distributed in the inner cavity of the cylinder head 3, the outer wall of the movable blocks 510 is in an inclined plane state, the inner cavity of the cylinder head 3 is provided with a sliding chute matched with the vertical moving track of the movable blocks 510 and the connecting blocks 508, the inner wall of the third oil hole 505 is matched with the outer wall of the movable blocks 510, the inner wall of the first oil hole 503 is matched with the outer wall of the shoulder 502, and the outer wall of the piston block 501 is matched with the inner cavity of the cylinder barrel 1.
In this embodiment: through the structure, when the shoulder 502 and the piston block 501 move under the thrust of the piston rod 2, the separated oil in the cylinder barrel 1 is exchanged through the circulating pipe 4, when the shoulder 502 is abutted to the first oil hole 503, the first oil hole 503 is blocked, so that the oil can only enter the inner cavity of the cylinder head 3 through the third oil hole 505 and the second oil hole 504, and the flowing speed of the oil is reduced because the inner wall diameters of the third oil hole 505 and the second oil hole 504 are smaller than the inner wall diameter of the first oil hole 503, so that the moving speed of the piston block 501 is synchronously reduced, and the buffer purpose is achieved.
The working principle is as follows: when the cylinder barrel 1 starts to work, the piston rod 2, the piston block 501 and the shoulder 502 return along the inner cavity of the cylinder barrel 1 under the action of external force, the separated oil in the cylinder barrel 1 enters another separated area in the cylinder barrel 1 through the first oil hole 503, the second oil hole 504, the third oil hole 505 and the circulating pipe 4 under extrusion force, the piston block 501 gradually approaches one cylinder head 3 as a movable part, the shoulder 502 also serves as a limiting part and is abutted with the first oil hole 503 to block the first oil hole, so that the oil cannot enter the inner cavity of the cylinder head 3 through the first oil hole 503, the rest oil enters the inner cavity of the cylinder head 3 through the second oil hole 504 and the third oil hole 505, the flow speed of the oil is reduced due to the fact that the inner wall diameters of the third oil hole 505 and the second oil hole 504 are smaller than that of the first oil hole 503, the movement speed of the piston block 501 is synchronously reduced to achieve the purpose of buffering the oil hole, meanwhile, the oil entering the third oil moves to generate pressure, the connecting block 508, the elastic block 509 and the movable block 510 serve as a transmission part, the outer wall of the sealing ring generates thrust force which is pressed by the elastic sealing ring 510, and the elastic sealing ring which presses the first oil hole 502, the elastic block 510, and the shoulder 502 and the elastic sealing ring 510 which is pressed by the elastic force which is pressed on the outer wall of the elastic block, and the elastic sealing ring which are pressed by the elastic sealing ring, and the elastic sealing ring which are pressed by the elastic block, the elastic sealing ring 510; when the shoulder 502 stops moving, the oil inside the cylinder 1 will not move any more, then the thrust provided to the movable block 510 will also disappear, then the thrust received by the first and second seal rings 506, 507 will also disappear, and the oil will not have a flowing space, so that the movable block 510 will always remain at this position, when the shoulder 502 moves in the opposite direction, the oil will leave a space, so that the movable block 510 will reset under the elastic force of the elastic block 509, the first and second seal rings 506, 507 will reset together with the movable block 510 under the elastic force of the elastic block 509, then when the shoulder 502 moves out, the shoulder will no longer be attached to the outer walls of the first and second seal rings 506, 507, and no longer participate in the sealing action, thereby reducing the contact time between the first and second seal rings 506, 507 and the limit component, and increasing the service lives of the first and second seal rings 506, 507.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (8)
1. The utility model provides a hydraulic cylinder with high shock-absorbing capacity, includes cylinder (1), the both ends fixed mounting of cylinder (1) has cylinder cap (3) that is used for sealing to the inside fluid of cylinder (1), its characterized in that still includes buffer gear (5), and buffer gear (5) are including opening in inside first oilhole (503), second oilhole (504), the third oilhole (505) that is used for the fluid backward flow of cylinder cap (3), the central point department of putting at cylinder cap (3) is seted up in first oilhole (503), the both sides at first oilhole (503) are seted up in second oilhole (504), third oilhole (505) are seted up between first oilhole (503), second oilhole (504), and third oilhole (505) and second oilhole (504) intercommunication, first sealing ring (506), second sealing ring (507) that are used for increasing the leakproofness are installed to the inner chamber of first oilhole (503), first sealing ring (506) are located one side of second sealing ring (507).
2. The hydraulic oil cylinder with high buffering performance according to claim 1, wherein the buffering mechanism (5) further comprises a connecting block (508) fixedly connected to the bottom end of the second sealing ring (507) and used for providing driving force for the second sealing ring (507), an elastic block (509) used for providing restoring elastic force is connected to the inner side of the connecting block (508), the other end of the elastic block (509) is fixedly connected with an inner cavity of the cylinder cover (3), and a movable block (510) used for providing upward pushing force is fixedly connected to the outer wall of the connecting block (508).
3. The hydraulic cylinder with the high buffering performance as claimed in claim 1, wherein the cylinder barrel (1) further comprises a piston rod (2) for providing power, one end of the piston rod (2) is fixedly connected with a piston block (501) for separating oil in the cylinder barrel (1), one end of the piston block (501) is fixedly connected with a shoulder (502) for blocking the first oil hole (503), the top end of the cylinder cover (3) is connected with a circulating pipe (4) for returning the separated oil in the cylinder barrel (1), and one end of the circulating pipe (4) is connected with a hydraulic pump.
4. The hydraulic oil cylinder with high buffering performance as claimed in claim 1, characterized in that the butt joint position of the first sealing ring (506) and the second sealing ring (507) is in an L-shaped structure.
5. The hydraulic oil cylinder with high buffering performance as claimed in claim 1, wherein the diameter of the inner wall of the first oil hole (503) is larger than that of the inner wall of the second oil hole (504), a spherical guide groove is formed at the joint of the first oil hole (503) and the second oil hole (504), and the diameter of the inner wall of the spherical guide groove is larger than that of the inner wall of the first oil hole (503).
6. The hydraulic oil cylinder with high buffering performance according to claim 2, characterized in that the number of the connecting blocks (508), the elastic blocks (509) and the movable blocks (510) is two, and the two connecting blocks (508), the elastic blocks (509) and the movable blocks (510) are symmetrically distributed in the inner cavity of the cylinder cover (3).
7. The hydraulic oil cylinder with the high buffering performance according to claim 2, wherein the outer wall of the movable block (510) is in an inclined plane state, a sliding groove matched with the vertical moving track of the movable block (510) and the connecting block (508) is formed in an inner cavity of the cylinder cover (3), and the inner wall of the third oil hole (505) is matched with the outer wall of the movable block (510).
8. A hydraulic cylinder with high damping performance according to claim 3, characterized in that the inner wall of the first oil hole (503) is matched with the outer wall of the shoulder (502), and the outer wall of the piston block (501) is matched with the inner cavity of the cylinder barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829577.8A CN115234541A (en) | 2022-07-15 | 2022-07-15 | Hydraulic cylinder with high buffer performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829577.8A CN115234541A (en) | 2022-07-15 | 2022-07-15 | Hydraulic cylinder with high buffer performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115234541A true CN115234541A (en) | 2022-10-25 |
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ID=83672757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210829577.8A Pending CN115234541A (en) | 2022-07-15 | 2022-07-15 | Hydraulic cylinder with high buffer performance |
Country Status (1)
| Country | Link |
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| CN (1) | CN115234541A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011086842A1 (en) * | 2010-12-20 | 2012-06-21 | Schaeffler Technologies Gmbh & Co. Kg | Master cylinder for hydraulic section for performing clutch operation of motor car, has aperture sealed by sealing element fastened at piston rod and weld ring, and ring arranged on piston rod, where sealing element is connected with ring |
| CN203161708U (en) * | 2013-01-21 | 2013-08-28 | 三一汽车制造有限公司 | Buffering hydraulic oil cylinder |
| CN207634428U (en) * | 2017-11-08 | 2018-07-20 | 新昌县大市聚镇伯凡机械厂 | A kind of hydraulic cylinder with cushion performance |
| CN207634429U (en) * | 2017-11-08 | 2018-07-20 | 新昌县大市聚镇伯凡机械厂 | A kind of sealing assembly anti-shearing hydraulic cylinder |
| CN210218296U (en) * | 2019-07-08 | 2020-03-31 | 扬州旭欣气动液压设备有限公司 | Hydraulic cylinder sealing structure |
| CN211449272U (en) * | 2020-01-15 | 2020-09-08 | 福建省仕明重型机械有限公司 | Oil cylinder buffer device |
| CN114294300A (en) * | 2022-01-26 | 2022-04-08 | 宁波固远管件有限公司 | Bidirectional buffer forward and backward moving oil cylinder |
-
2022
- 2022-07-15 CN CN202210829577.8A patent/CN115234541A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011086842A1 (en) * | 2010-12-20 | 2012-06-21 | Schaeffler Technologies Gmbh & Co. Kg | Master cylinder for hydraulic section for performing clutch operation of motor car, has aperture sealed by sealing element fastened at piston rod and weld ring, and ring arranged on piston rod, where sealing element is connected with ring |
| CN203161708U (en) * | 2013-01-21 | 2013-08-28 | 三一汽车制造有限公司 | Buffering hydraulic oil cylinder |
| CN207634428U (en) * | 2017-11-08 | 2018-07-20 | 新昌县大市聚镇伯凡机械厂 | A kind of hydraulic cylinder with cushion performance |
| CN207634429U (en) * | 2017-11-08 | 2018-07-20 | 新昌县大市聚镇伯凡机械厂 | A kind of sealing assembly anti-shearing hydraulic cylinder |
| CN210218296U (en) * | 2019-07-08 | 2020-03-31 | 扬州旭欣气动液压设备有限公司 | Hydraulic cylinder sealing structure |
| CN211449272U (en) * | 2020-01-15 | 2020-09-08 | 福建省仕明重型机械有限公司 | Oil cylinder buffer device |
| CN114294300A (en) * | 2022-01-26 | 2022-04-08 | 宁波固远管件有限公司 | Bidirectional buffer forward and backward moving oil cylinder |
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