CN220726732U - High-speed long-stroke oil cylinder with buffering function - Google Patents
High-speed long-stroke oil cylinder with buffering function Download PDFInfo
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- CN220726732U CN220726732U CN202322509918.6U CN202322509918U CN220726732U CN 220726732 U CN220726732 U CN 220726732U CN 202322509918 U CN202322509918 U CN 202322509918U CN 220726732 U CN220726732 U CN 220726732U
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- piston rod
- cylinder
- buffering
- piston
- ring
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 40
- 230000033001 locomotion Effects 0.000 abstract description 9
- 230000003116 impacting effect Effects 0.000 abstract 2
- 238000001125 extrusion Methods 0.000 description 13
- 239000003921 oil Substances 0.000 description 8
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a high-speed long-stroke oil cylinder with a buffering function, which comprises a cylinder head, a cylinder body, a cylinder bottom, a piston and a piston rod, wherein the piston rod is provided with a buffering sleeve, the buffering sleeve is positioned between the piston rod and the piston, the buffering sleeve is in clearance fit with the piston rod, the diameter of the buffering sleeve is larger than that of the piston rod, the cylinder bottom is provided with a buffering ring, the buffering ring is in sliding connection with the piston rod, the inner diameter of the buffering ring is smaller than the outer diameter of the tail end of the piston rod, the inner wall of the cylinder head extrudes the buffering sleeve, the buffering sleeve is extruded and retracted and is attached to the outer diameter of the piston rod, the cylinder head extrudes the buffering sleeve to reduce the movement speed of the piston rod, so that the piston is prevented from impacting the cylinder head, and when the piston rod is retracted, the tail end of the piston rod is embedded into the buffering ring, the speed of the piston rod is reduced by extruding the tail end of the piston rod, so that the piston is prevented from impacting the cylinder bottom.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a high-speed long-stroke oil cylinder with a buffering function.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines.
When the long-stroke hydraulic cylinder works, the extension or retraction speed of the piston rod is consistent all the time when the piston rod works, so that the piston of the long-stroke hydraulic cylinder easily impacts a cylinder head or a cylinder bottom at the tail end of the stroke, leakage of the hydraulic cylinder is caused for a long time, the hydraulic cylinder is prevented from maintaining pressure, and even the cylinder head and the cylinder bottom are damaged, and the hydraulic cylinder is scrapped.
Disclosure of Invention
The utility model aims to provide a high-speed long-stroke oil cylinder with a buffering function, which overcomes the defects in the prior art.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a high-speed long stroke hydro-cylinder with buffer function, includes cylinder head, cylinder body, cylinder bottom, piston and piston rod, wherein, be provided with the cushion collar on the piston rod, the cushion collar is located between piston rod and the piston, clearance fit between cushion collar and the piston rod, and the diameter of cushion collar is greater than the diameter of piston rod, and the cylinder bottom is provided with the cushion collar, cushion collar and piston rod sliding connection, and the internal diameter of cushion collar is less than the external diameter of the tail end of piston rod.
In the above-mentioned scheme, pour into hydraulic oil from the cylinder bottom, hydraulic oil jack-up piston and piston rod are along the cylinder body slip, the buffer sleeve removes along with the piston rod removes simultaneously, when the piston rod moves to the stroke tail end, cylinder head inner wall extrusion buffer sleeve, the buffer sleeve receives the extrusion to retract and laminate with the piston rod external diameter, cylinder head extrusion buffer sleeve is with the velocity of movement that reduces the piston rod for the velocity of piston reduces, thereby avoid piston striking cylinder head, when the piston rod is retracted, the tail end embedding buffer ring of piston rod is in, the buffer ring is through the velocity of extrusion piston rod tail end with the reduction piston rod, thereby the velocity of piston reduces, thereby avoid piston striking cylinder bottom. The problem that the piston of the hydraulic cylinder is easy to strike the cylinder head or the cylinder bottom at the tail end of the stroke and the hydraulic cylinder leaks for a long time, so that the hydraulic cylinder is not pressurized and even the cylinder head and the cylinder bottom are damaged, and the hydraulic cylinder is scrapped is solved.
As an improvement of the high-speed long-stroke oil cylinder with the buffering function, a conical surface I is arranged at the edge of the top surface of the buffering sleeve.
In the above scheme, the first conical surface arranged at the edge of the top surface of the buffer sleeve is used for enabling the buffer sleeve to have a gradient, the gradient reduces the high point of the buffer sleeve, and the gradient is convenient for the buffer sleeve to enter the inner wall of the cylinder head.
As an improvement of the high-speed long-stroke oil cylinder with the buffering function, a conical surface II is arranged at the edge of the inner wall of the buffering ring.
In the scheme, the second conical surface arranged at the edge of the inner wall of the buffer ring is used for enabling the buffer ring to have a gradient, the inner diameter of the buffer ring is increased by the gradient, and the tail end of the piston rod conveniently enters the buffer ring.
As an improvement of the high-speed long-stroke oil cylinder with the buffering function, the cylinder head is provided with a supporting groove.
In the scheme, the supporting groove is arranged to increase the inner diameter of the cylinder head, the increased inner diameter of the part is used for recovering the buffer sleeve, and the buffer sleeve is prevented from being extruded for a long time to cause the elastic recovery failure.
As an improvement of the high-speed long-stroke oil cylinder with the buffering function, the cylinder bottom is provided with the positioning nut, the positioning nut is internally provided with the limiting groove, the ring body of the buffering ring is positioned in the limiting groove, and the width of the limiting groove is larger than that of the ring body of the buffering ring.
In the above scheme, because the piston rod is in hard friction contact between the piston rod and the buffer ring when being separated from and embedded into the buffer ring, in order to prevent the buffer ring from being broken by hard extrusion at two ends of the buffer ring, a limiting groove is formed, and the buffer ring can slide along the limiting groove under the driving of the piston rod, so that the buffer ring breakage phenomenon caused by hard extrusion at two ends of the buffer ring is prevented from occurring.
Compared with the prior art, the utility model has the beneficial effects that: the cylinder head inner wall extrusion buffer sleeve, buffer sleeve receive extrusion and retract and with the laminating of piston rod external diameter, cylinder head extrusion buffer sleeve is in order to reduce the velocity of movement of piston rod for the velocity reduction of piston, thereby avoid the piston striking cylinder head, when the piston rod is retracted, the tail end embedding buffer ring of piston rod, the buffer ring is through the velocity of extrusion piston rod tail end in order to reduce the piston rod, thereby the velocity reduction of piston, thereby avoid the piston striking cylinder bottom. The problems that the piston of the hydraulic cylinder is easy to strike the cylinder head or the cylinder bottom at the tail end of the stroke and the hydraulic cylinder leaks for a long time, so that the hydraulic cylinder is not pressurized and even the cylinder head and the cylinder bottom are damaged and the hydraulic cylinder is scrapped are solved; the first conical surface arranged at the edge of the top surface of the buffer sleeve is used for enabling the buffer sleeve to have a gradient, and the gradient is used for enabling the buffer sleeve to enter the inner wall of the cylinder head conveniently; the second conical surface arranged at the edge of the inner wall of the buffer ring is used for enabling the buffer ring to have a gradient, and the gradient facilitates the tail end of the piston rod to enter the buffer ring; the limiting groove is formed, and the buffer ring can slide along the limiting groove under the driving of the piston rod, so that the phenomenon that the buffer ring is broken due to hard extrusion on two ends of the buffer ring is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model (semi-cut process);
FIG. 2 is an enlarged view at A of FIG. 1;
fig. 3 is an enlarged view at B of fig. 1.
1, a cylinder head; 2. a cylinder; 3. a cylinder bottom; 4. a piston rod; 5. a buffer sleeve; 6. a buffer ring; 7. a conical surface I; 8. a conical surface II; 9. a support groove; 10. positioning a nut; 11. a limit groove; 12 pistons.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the high-speed long-stroke oil cylinder with the buffering function comprises a cylinder head 1, a cylinder body 2, a cylinder bottom 3, a piston 12 and a piston rod 4, wherein a buffering sleeve 5 is arranged on the piston rod 4, the buffering sleeve 5 is positioned between the piston rod 4 and the piston, the buffering sleeve 5 is in clearance fit with the piston rod 4, the diameter of the buffering sleeve 5 is larger than that of the piston rod 4, the cylinder bottom 3 is provided with a buffering ring 6, the buffering ring 6 is in sliding connection with the piston rod 4, and the inner diameter of the buffering ring 6 is smaller than the outer diameter of the tail end of the piston rod 4.
The hydraulic oil is injected from the cylinder bottom 3, the hydraulic oil jacks up the piston and the piston rod 4 to slide along the cylinder body 2, meanwhile, the buffer sleeve 5 moves along with the movement of the piston rod 4, when the piston rod 4 moves to the tail end of the stroke, the inner wall of the cylinder head 1 extrudes the buffer sleeve 5, the buffer sleeve 5 is extruded and retracted and is attached to the outer diameter of the piston rod 4, the cylinder head 1 extrudes the buffer sleeve 5 to reduce the movement speed of the piston rod 4, the speed of the piston is reduced, the piston is prevented from striking the cylinder head 1, when the piston rod 4 is retracted, the tail end of the piston rod 4 is embedded into the buffer ring 6, the speed of the piston rod 4 is reduced by extruding the tail end of the piston rod 4, the speed of the piston is reduced, and the piston is prevented from striking the cylinder bottom 3. The problem that the piston of the hydraulic cylinder is easy to strike the cylinder head 1 or the cylinder bottom 3 at the tail end of the stroke and the hydraulic cylinder leaks for a long time, so that the hydraulic cylinder does not maintain pressure and even the cylinder head 1 and the cylinder bottom 3 are damaged, and the hydraulic cylinder is scrapped is solved.
The edge of the top surface of the buffer sleeve 5 is provided with a conical surface I7.
The conical surface 7 provided at the edge of the top surface of the buffer sleeve 5 serves to give the buffer sleeve 5 a slope which reduces the height of the buffer sleeve 5, which slope for convenience of the buffer sleeve 5 enters the inner wall of the cylinder head 1.
And a conical surface II 8 is arranged at the edge of the inner wall of the buffer ring 6.
The conical surface II 8 arranged at the edge of the inner wall of the buffer ring 6 is used for enabling the buffer ring 6 to have a gradient, the inner diameter of the buffer ring 6 is increased by the gradient, and the tail end of the piston rod 4 conveniently enters the buffer ring 6.
The cylinder head 1 is provided with a support groove 9.
The support groove 9 is provided for increasing the inner diameter of the cylinder head 1, and the increased inner diameter of the portion is used for recovering the buffer sleeve 5, so that the buffer sleeve 5 is prevented from being extruded for a long time to cause the elastic recovery.
The cylinder bottom 3 is provided with a positioning nut 10, a limiting groove 11 is arranged in the positioning nut 10, the ring body of the buffer ring 6 is positioned in the limiting groove 11, and the width of the limiting groove 11 is larger than that of the ring body of the buffer ring 6.
Because the piston rod 4 is in hard friction contact with the buffer ring 6 when the piston rod 4 is separated from and embedded into the buffer ring 6, in order to prevent the buffer ring 6 from being broken due to hard extrusion at two ends of the buffer ring 6, the limiting groove 11 is formed, and the buffer ring 6 can slide along the limiting groove 11 under the driving of the piston rod 4, so that the buffer ring 6 is prevented from being broken due to hard extrusion at two ends of the buffer ring 6.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a high-speed long stroke hydro-cylinder with buffer function, includes cylinder head, cylinder body, cylinder bottom, piston and piston rod, wherein, its characterized in that is provided with the cushion collar on the piston rod, the cushion collar is located between piston rod and the piston, clearance fit between cushion collar and the piston rod, the diameter of cushion collar is greater than the diameter of piston rod, the cylinder bottom is provided with the cushion collar, cushion collar and piston rod sliding connection, the internal diameter of cushion collar is less than the external diameter of the tail end of piston rod.
2. The high-speed long-stroke cylinder with a buffering function according to claim 1, wherein a conical surface I is arranged at the edge of the top surface of the buffering sleeve.
3. The high-speed long-stroke cylinder with the buffering function according to claim 1, wherein a conical surface II is arranged at the edge of the inner wall of the buffering ring.
4. The high-speed long stroke cylinder with buffering function according to claim 1, wherein the cylinder head is provided with a supporting groove.
5. The high-speed long-stroke oil cylinder with the buffering function according to claim 1, wherein a positioning nut is arranged at the cylinder bottom, a limiting groove is formed in the positioning nut, a ring body of the buffering ring is located in the limiting groove, and the width of the limiting groove is larger than that of the ring body of the buffering ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322509918.6U CN220726732U (en) | 2023-09-15 | 2023-09-15 | High-speed long-stroke oil cylinder with buffering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322509918.6U CN220726732U (en) | 2023-09-15 | 2023-09-15 | High-speed long-stroke oil cylinder with buffering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220726732U true CN220726732U (en) | 2024-04-05 |
Family
ID=90488255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322509918.6U Active CN220726732U (en) | 2023-09-15 | 2023-09-15 | High-speed long-stroke oil cylinder with buffering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220726732U (en) |
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2023
- 2023-09-15 CN CN202322509918.6U patent/CN220726732U/en active Active
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