CN220015683U - Hydraulic cylinder sealing structure - Google Patents
Hydraulic cylinder sealing structure Download PDFInfo
- Publication number
- CN220015683U CN220015683U CN202321422231.2U CN202321422231U CN220015683U CN 220015683 U CN220015683 U CN 220015683U CN 202321422231 U CN202321422231 U CN 202321422231U CN 220015683 U CN220015683 U CN 220015683U
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- Prior art keywords
- sealing
- end cover
- cylinder
- piston rod
- seal
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- 238000007789 sealing Methods 0.000 title claims abstract description 129
- 239000003921 oil Substances 0.000 abstract description 27
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 230000008093 supporting effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model relates to a hydraulic oil cylinder sealing structure, which comprises a cylinder barrel, a piston rod, an oil cylinder end cover and a sealing end cover; a piston rod is arranged in the cylinder barrel, one end of the piston rod extends out of the cylinder barrel, an oil cylinder end cover is sleeved on one end of the piston rod extending out of the cylinder barrel, and the oil cylinder end cover is connected with the cylinder barrel in a matched mode; a sealing end cover is sleeved on one end of the piston rod extending out of the cylinder barrel, the sealing end cover moves back and forth along the piston rod to be close to or far away from the cylinder end cover, and one side, far away from the cylinder barrel, of the cylinder end cover is connected with the sealing end cover through a fastener; and a sealing element groove is formed in the sealing end cover, and an opening type combined sealing element is arranged in the sealing element groove. The hydraulic cylinder sealing structure is simple, the replacement of the piston rod sealing piece can be realized without detaching the hydraulic cylinder from equipment, the operation is convenient, the time and the labor are saved, the replacement efficiency of the sealing piece is high, and the equipment downtime is shortened.
Description
Technical Field
The utility model relates to a sealing structure, in particular to a hydraulic oil cylinder sealing structure.
Background
At present, in a sealing structure of a piston rod of a hydraulic oil cylinder, a sealing installation groove and a supporting ring installation groove are arranged in an inner hole of an end cover (or a piston rod guide sleeve), and a sealing element and a supporting ring are assembled in the corresponding grooves. After the end cover or the guide sleeve is assembled with the sealing element and the supporting ring, the end cover or the guide sleeve is assembled with the piston rod or the piston assembly body and then is assembled and connected with the cylinder barrel. If the hydraulic cylinder piston rod has leakage fault, the hydraulic cylinder needs to be detached from the equipment, the end cover or the guide sleeve is detached from the hydraulic cylinder after being transported to the maintenance site, the sealing element is replaced, then the assembly test is performed again, and the hydraulic cylinder is assembled back to the equipment for continuous use. Above-mentioned change step to piston rod sealing member is loaded down with trivial details, wastes time and energy, and change maintenance cycle is long, causes equipment to shut down for a long time, influences the economic benefits of enterprise.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model provides a hydraulic cylinder sealing structure.
The technical scheme adopted for solving the technical problems is as follows: a hydraulic cylinder sealing structure comprises a cylinder barrel, a piston rod, a cylinder end cover and a sealing end cover;
a piston rod is arranged in the cylinder barrel, one end of the piston rod extends out of the cylinder barrel, an oil cylinder end cover is sleeved on one end of the piston rod extending out of the cylinder barrel, and the oil cylinder end cover is connected with the cylinder barrel in a matched mode;
a sealing end cover is sleeved on one end of the piston rod extending out of the cylinder barrel, the sealing end cover moves back and forth along the piston rod to be close to or far away from the cylinder end cover, and one side, far away from the cylinder barrel, of the cylinder end cover is connected with the sealing end cover through a fastener;
and a sealing element groove is formed in the sealing end cover, and an opening type combined sealing element is arranged in the sealing element groove.
In a preferred embodiment of the present utility model, the split combined seal is a split combined V-seal.
In a preferred embodiment of the present utility model, the split combined seal member includes a plurality of split V-shaped seal rings, and the openings of two adjacent split V-shaped seal rings are staggered with each other.
In a preferred embodiment of the utility model, a buffer main seal and a plurality of support rings are arranged between the cylinder end cover and the piston rod, and the buffer main seal is arranged near one end of the cylinder end cover.
In a preferred embodiment of the present utility model, a sealing ring is disposed between the sealing end cap and the cylinder end cap.
In a preferred embodiment of the utility model, the end of the piston rod extending out of the cylinder is provided with a rod end connection lug.
In a preferred embodiment of the utility model, the fastener is a sealing plug.
The beneficial effects of the utility model are as follows: according to the utility model, the sealing of the piston rod is realized through the sealing end cover, when the piston rod leaks and the piston rod sealing element needs to be replaced, only the fastening piece between the sealing end cover and the oil cylinder end cover is required to be removed, so that the sealing end cover moves away from the oil cylinder end cover along the piston rod, sufficient operation space is provided for taking out the opening type combined sealing element in the sealing end cover, then the opening type combined sealing element is taken out from the sealing element groove of the sealing end cover, then a new opening type combined sealing element is placed, finally the sealing end cover moves along the piston rod, so that the sealing end cover is abutted against the oil cylinder end cover, and the connection between the sealing end cover and the oil cylinder end cover is realized through the fastening piece. The hydraulic cylinder sealing structure is simple, the replacement of the piston rod sealing piece can be realized without detaching the hydraulic cylinder from equipment, the operation is convenient, the time and the labor are saved, the replacement efficiency of the sealing piece is high, and the equipment downtime is shortened.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;
FIG. 3 is a schematic view of the removable seal end cap of the present utility model;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3 at B;
FIG. 5 is a schematic view of the seal end cap after removal of the split combined seal;
in the figure: a cylinder 1; a piston rod 2; an oil cylinder end cover 3; a seal end cap 4; a seal groove 5; an open combined seal 6; a buffer main seal 7; a plurality of support rings 8; a seal ring 9; the rod end is connected with an earring 10; a fastener 11.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The hydraulic oil cylinder sealing structure comprises a cylinder barrel 1, a piston rod 2, an oil cylinder end cover 3 and a sealing end cover 4 as shown in fig. 1 to 5;
a piston rod 2 is arranged in the cylinder barrel 1, one end of the piston rod 2 extends out of the cylinder barrel 1, an oil cylinder end cover 3 is sleeved on one end of the piston rod 2 extending out of the cylinder barrel 1, and the oil cylinder end cover 3 is connected with the cylinder barrel 1 in a matched mode; the cylinder barrel 1 is sealed through the cylinder end cover 3;
a sealing end cover 4 is sleeved on one end of the piston rod 2 extending out of the cylinder barrel 1, the sealing end cover 4 moves back and forth along the piston rod 2 to be close to or far away from the cylinder end cover 3, and one side, far away from the cylinder barrel, of the cylinder end cover 3 is connected with the sealing end cover 4 through a fastener 11; the sealing gland 4 is used for sealing the piston rod 2, the sealing end cover 4 is connected with the oil cylinder end cover 3, the sealing stability of the sealing end cover 4 on the piston rod 2 is realized, and meanwhile, the detachable connection between the sealing end cover 4 and the oil cylinder end cover 3 is realized, so that the operation is convenient, and the time and the labor are saved;
a sealing element groove 5 is formed in the sealing end cover 4, and an opening type combined sealing element 6 is arranged in the sealing element groove 5; the sealing end cover 4 is internally provided with the sealing element groove 5 to accommodate the sealing element, and the sealing element placed in the sealing element groove 5 is an open type combined sealing element, and the sealing element is in an open type sealing element structure.
According to the utility model, the sealing of the piston rod is realized through the sealing end cover, when the piston rod leaks and the piston rod sealing element needs to be replaced, only the fastening piece between the sealing end cover and the oil cylinder end cover is required to be removed, so that the sealing end cover moves away from the oil cylinder end cover along the piston rod, sufficient operation space is provided for taking out the opening type combined sealing element in the sealing end cover, then the opening type combined sealing element is taken out from the sealing element groove of the sealing end cover, then a new opening type combined sealing element is placed, finally the sealing end cover moves along the piston rod, so that the sealing end cover is abutted against the oil cylinder end cover, and the connection between the sealing end cover and the oil cylinder end cover is realized through the fastening piece. The hydraulic cylinder sealing structure is simple, the replacement of the piston rod sealing piece can be realized without detaching the hydraulic cylinder from equipment, the operation is convenient, the time and the labor are saved, the replacement efficiency of the sealing piece is high, and the equipment downtime is shortened.
As a preferred embodiment, the split combined seal 6 in the present utility model is a split combined V-type seal. Namely, the cross section of the opening type combined sealing piece 6 is V-shaped, so that the supporting and sealing effects on the piston rod are realized conveniently, and the sealing effect on the piston rod is improved. Specifically, the open type combined sealing piece 6 in the utility model comprises a plurality of open type V-shaped sealing rings, and the openings of two adjacent open type V-shaped sealing rings are staggered; namely, as the openings are formed on each V-shaped sealing ring, the notches between the adjacent V-shaped sealing rings are staggered, and the overall tightness of the open type combined sealing piece is ensured.
As a preferred embodiment, a buffer main seal 7 and a plurality of supporting rings 8 are arranged between the cylinder end cover 3 and the piston rod 2, and the buffer main seal 7 is arranged near one end of the cylinder end cover 3. The arrangement of the buffer main seal 7 realizes the sealing effect on the piston rod 2 in the cylinder barrel 1 when the sealing structure of the oil cylinder is replaced, and avoids the large quantity of oil in the cylinder barrel 1 from leaking out; the arrangement of a plurality of supporting rings 8 ensures the supporting effect on the piston rod 2 and the stability of the subsequent operation of the oil cylinder when the opening type combined V-shaped sealing element is replaced.
In order to further increase the tightness between the sealing end cover 4 and the oil cylinder end cover 3 and further ensure the sealing effect on the piston rod, a sealing ring 9 is arranged between the sealing end cover 4 and the oil cylinder end cover 3 in the utility model. Namely, the tightness between the sealing end cover and the oil cylinder end cover is realized through the sealing ring.
The end of the piston rod extending out of the cylinder in the utility model is provided with a rod end connecting lug ring 10. The connection between other parts is convenient to realize, and the driving function of the oil cylinder is convenient to realize.
As a preferred embodiment, the fastener 11 is a sealing plug, and the sealing plug also plays a role in sealing while realizing the connection between the sealing end cover and the oil cylinder end cover, so that the phenomenon of plug tightness reduction caused by thread damage is prevented, and the sealing effect of the sealing end cover on the piston rod is further ensured.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In summary, although the present utility model has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model is defined by the appended claims.
Claims (7)
1. The hydraulic cylinder sealing structure is characterized by comprising a cylinder barrel, a piston rod, a cylinder end cover and a sealing end cover;
a piston rod is arranged in the cylinder barrel, one end of the piston rod extends out of the cylinder barrel, an oil cylinder end cover is sleeved on one end of the piston rod extending out of the cylinder barrel, and the oil cylinder end cover is connected with the cylinder barrel in a matched mode;
a sealing end cover is sleeved on one end of the piston rod extending out of the cylinder barrel, the sealing end cover moves back and forth along the piston rod to be close to or far away from the cylinder end cover, and one side, far away from the cylinder barrel, of the cylinder end cover is connected with the sealing end cover through a fastener;
and a sealing element groove is formed in the sealing end cover, and an opening type combined sealing element is arranged in the sealing element groove.
2. The hydraulic ram seal arrangement of claim 1, wherein the split combined seal is an split combined V-seal.
3. The hydraulic cylinder sealing structure according to claim 2, wherein the split combined sealing member comprises a plurality of split V-shaped sealing rings, and the openings of two adjacent split V-shaped sealing rings are staggered.
4. The hydraulic cylinder seal arrangement of claim 1 wherein a cushioning main seal and a plurality of support rings are provided between the cylinder end cap and the piston rod, the cushioning main seal being disposed proximate one end of the cylinder end cap.
5. The hydraulic cylinder seal structure of claim 4 wherein a seal ring is disposed between the seal end cap and the cylinder end cap.
6. The hydraulic cylinder seal structure according to claim 1, wherein a rod end connecting lug is provided at one end of the piston rod extending out of the cylinder tube.
7. The hydraulic ram seal arrangement according to any one of claims 1 to 6, wherein the fastener is a seal plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321422231.2U CN220015683U (en) | 2023-06-06 | 2023-06-06 | Hydraulic cylinder sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321422231.2U CN220015683U (en) | 2023-06-06 | 2023-06-06 | Hydraulic cylinder sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220015683U true CN220015683U (en) | 2023-11-14 |
Family
ID=88686281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321422231.2U Active CN220015683U (en) | 2023-06-06 | 2023-06-06 | Hydraulic cylinder sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220015683U (en) |
-
2023
- 2023-06-06 CN CN202321422231.2U patent/CN220015683U/en active Active
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