Sealing element capable of adapting to groove corrosion
By designing a concave-convex structure on the outer wall of the seal root, the problem of seal failure caused by rust in the excavator cylinder grooves was solved, achieving a stable sealing effect in harsh environments.
Patent Information
- Application Number
- CN202520239281.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-14
AI Technical Summary
The seals in the excavator's hydraulic cylinder grooves fail due to corrosion, making it unable to maintain stability and durability in harsh environments, leading to problems such as leakage.
A sealing element was designed with a concave-convex structure on the outer wall of its root. The protrusions and recesses are arranged axially and can be embedded in the tiny concavities and convexities of the groove caused by corrosion, increasing the contact area and friction to ensure the sealing effect.
It improves the stability and durability of seals under long-term use and harsh environments, and reduces the risk of wear and leakage.
Smart Images
Figure CN223578828U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the sealing field especially relates to a sealing element adapting to groove rust. BACKGROUND
[0002] The excavator works for a long time outdoors, and the outdoor environment is relatively bad. Rainwater is easy to enter the oil cylinder and be affected by the damp environment when the operation is carried out in the rain. The oil cylinder groove often appears rust phenomenon, which increases the roughness of the groove surface and produces concave-convex surface. The ordinary sealing element fails to adapt to the rough surface and further causes leakage and other problems. This not only affects the normal work of the excavator, but also increases the maintenance cost and time. SUMMARY
[0003] In view of the defects of the prior art, the utility model provides a sealing element adapting to groove rust, which can ensure the stability and durability of the sealing element in long-term use and bad environment.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A sealing element adapting to groove rust, characterized by comprising a sealing body;
[0006] The head of the sealing body has an inner lip and an outer lip;
[0007] The root outer wall of the sealing body has a concave-convex structure protruding from the outer wall of the sealing body, and the concave-convex structure can be sealed with the inner wall of the oil cylinder groove.
[0008] Preferably, the concave-convex structure comprises a thickening area formed on the outer wall of the sealing body, and a protruding part and a recessed part arranged axially on the outer side of the thickening area.
[0009] Preferably, the thickness of the protruding part gradually increases from the top to the bottom.
[0010] Preferably, the top of the protruding part and the bottom of the recessed part are provided with a round corner.
[0011] Preferably, the end wall of the root of the sealing body corresponds to the bottom of the protruding part on the outer side.
[0012] The utility model has the advantages that the root outer wall of the sealing element is provided with a concave-convex structure, which matches the rusted surface of the groove. The small concave-convex structure can be embedded in the small concave-convex surface caused by rust in the sealing process, thereby increasing the contact area and friction force between the sealing element and the groove, improving the sealing effect, and ensuring the stability and durability of the sealing element in long-term use and bad environment. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 A cross-sectional view of the sealing element provided by the present embodiment for accommodating groove corrosion;
[0014] Fig. 2 A schematic view of the sealing element provided by the present embodiment for accommodating groove corrosion in the groove. DETAILED DESCRIPTION
[0015] Combination Figs. 1-2 Further description of the sealing element for accommodating groove corrosion of the present utility model.
[0016] A sealing element for accommodating groove corrosion, characterized by comprising a sealing body 1, which is injection molded from high-wear-resistance and high-elasticity material, such as rubber or thermoplastic elastomer.
[0017] The sealing body 1 has an inner lip 2 and an outer lip 4 at the head thereof, the inner lip 2 is inwardly inclined, and the outer lip 4 is outwardly inclined, so that the sealing element forms a Y-shaped structure.
[0018] The sealing body 1 has a concave-convex structure 3 protruding from the outer side wall of the sealing body 1 at the root thereof, which extends by about 45-90° in the circumferential direction of the sealing body 1, so that the concave-convex structure 3 can be tightly sealed with the bottom wall 41 of the cylinder groove 4.
[0019] Specifically, the concave-convex structure 3 comprises a thickened area 31 formed on the outer side wall of the sealing body 1, and a convex portion 32 and a concave portion 33 arranged along the axial direction of the sealing body 1 outside the thickened area 31. The convex portion 32 has two, and the position between the two convex portions 32 forms the concave portion 33. During sealing, the formation of the convex portion 32 and the concave portion 33 can facilitate the elastic deformation of the top of the convex portion 32, so that it can be embedded in the slight concave-convex of the groove 4 due to corrosion, increase the contact area and friction, and improve the sealing effect.
[0020] The thickness of the convex portion 32 gradually increases from the top to the bottom, which can make the top thickness of the convex portion 32 smaller, and it is easier to embed in the concave-convex of the groove 4 due to corrosion after elastic deformation. Secondly, as the convex portion 32 goes down, the thickness becomes thicker, so as the deformation amount of the convex portion 32 increases, the extrusion force of the convex portion 32 on the inside of the groove 4 will also gradually increase, to ensure effective extrusion and contact between the convex portion 32 and the inner wall of the groove 4, and to ensure stable sealing.
[0021] The top of the convex portion 32 and the bottom of the concave portion 33 are provided with rounded corners, the rounded corner structure of the top of the convex portion 32 can reduce the problem of wear of the convex portion 32, and the bottom of the concave portion 33 is provided with a rounded corner structure, which can reduce the problem of cracking between the two convex portions 32 during the deformation process.
[0022] The end wall of the root of the sealing body 1 corresponds to the bottom of the convex part 32 on the outer side, which makes the outer corner of the root of the sealing body 1 be a rounded corner structure 5, and reduces the problem that the corner is abraded by the friction with the inner wall of the groove 4.
[0023] In the specific use of the embodiment, the outer side wall of the root of the sealing member is provided with the micro concave-convex structure 3, which matches the rusted surface of the groove 4 and can be embedded in the micro concave-convex structure caused by rust in the sealing process, thereby increasing the contact area and friction force between the sealing member and the groove 4, improving the sealing effect, and ensuring the stability and durability of the sealing member in long-term use and harsh environment.
[0024] Unless otherwise specified and limited, in the utility model, if there are terms such as "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, the orientation or positional relationship shown in the drawings is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore the orientation or positional relationship described in the utility model is only used for example, and cannot be understood as a limitation on the patent, and for ordinary skilled persons in the art, the specific meaning of the above terms can be understood in combination with the drawings and according to the specific situation.
[0025] Unless otherwise specified and limited, in the utility model, if there are terms such as "setting", "connection" and "connection", they should be understood in a broad sense, for example, they can be fixedly connected, or they can be detachably connected, or integrally connected, they can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.
[0026] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiments, and any technical solution belonging to the idea of the utility model belongs to the protection scope of the utility model. It should be noted that for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the utility model can also be regarded as the protection scope of the utility model.
Claims
1. A seal adapted to groove corrosion, characterized in that: Includes the sealing body; The head of the sealing body has an inner lip and an outer lip; The outer wall of the root of the sealing body has a concave-convex structure that protrudes from the outer wall of the sealing body, and the concave-convex structure can fit and seal against the inner wall of the cylinder groove.
2. The sealing element adapted to groove corrosion according to claim 1, characterized in that: The convex-concave structure includes a thickened area formed on the outer wall of the sealing body, and protrusions and recesses located on the outer side of the thickened area and arranged along the axial direction of the sealing body.
3. The sealing element adapted to groove corrosion according to claim 2, characterized in that: The thickness of the protrusion gradually increases from the top to the bottom.
4. The seal adapted to groove corrosion according to claim 2, characterized in that: The top of the protrusion and the bottom of the recess are rounded.
5. The seal adapted to groove corrosion according to claim 2, characterized in that: The end wall at the root of the sealing body corresponds to the bottom of the protrusion located on the outside.