A rubber piston with good wear resistance
By introducing a wear-resistant mechanism and steel ring structure into the cylinder piston, the problems of deformation and breakage of the cylinder piston under media impact and axial compression are solved, the compressive and tensile strength is improved, the sealing performance is ensured, and the normal use of the wear-resistant rubber piston is realized.
Patent Information
- Application Number
- CN202521927036.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-09-08
AI Technical Summary
The existing hydraulic cylinder pistons have poor wear resistance and are prone to deformation and breakage under the impact of the medium or axial compression, resulting in a decrease in sealing performance and affecting the normal use of the hydraulic cylinder.
The piston ring employs a wear-resistant mechanism, including a buffer system consisting of first and second elastic rings, a buffer bladder, and a spring within the first piston ring, combined with first and second anti-compression rings of a steel ring structure to enhance compressive and tensile strength, and an anti-corrosion coating is applied to the piston ring surface.
It improves the pressure resistance and wear resistance of the rubber piston, avoids deformation and damage, enhances the sealing effect, and ensures the normal operation of the hydraulic cylinder.
Smart Images
Figure CN224453646U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder piston technology, and more specifically to a rubber piston with good wear resistance. Background Technology
[0002] Rubber pistons are generally used in hydraulic seals such as cylinder pistons. The piston rings fit tightly against the cylinder wall to prevent gas / liquid leakage. They have excellent oil resistance and low cost.
[0003] The existing hydraulic cylinder pistons have poor wear resistance and are often subjected to impact or axial compression by the medium during use, which can easily cause deformation, damage or even detachment of the hydraulic cylinder piston. This leads to poor sealing performance of the hydraulic cylinder piston and affects the normal use of the hydraulic cylinder. Utility Model Content
[0004] The purpose of this utility model is to provide a rubber piston with good wear resistance, so as to solve the problem mentioned in the background art that the existing hydraulic cylinder piston has poor wear resistance and is often subjected to the impact of the medium or axial compression during use, which can easily cause the hydraulic cylinder piston to deform, break or even fall off, resulting in poor sealing performance of the hydraulic cylinder piston and affecting the normal use of the hydraulic cylinder.
[0005] To achieve the above objectives, this utility model provides a rubber piston with good wear resistance, including a first piston ring, a second piston ring fixedly sleeved on the outside of the first piston ring, an annular cavity inside the first piston ring, a wear-resistant mechanism located in the annular cavity of the first piston ring, the wear-resistant mechanism including a first elastic ring and a second elastic ring, both the first elastic ring and the second elastic ring being disposed within the annular cavity, and the first elastic ring and the second elastic ring respectively abutting against the two ends of the annular cavity, a plurality of springs being disposed between the first elastic ring and the second elastic ring, the two ends of the springs being fixed to the first elastic ring and the second elastic ring respectively, a plurality of buffer airbags being disposed between the first elastic ring and the second elastic ring, the two sides of the buffer airbags being bonded to the first elastic ring and the second elastic ring respectively, and the plurality of buffer airbags being spaced apart from the springs.
[0006] By adopting the above scheme, the first piston ring squeezes the first elastic ring and the second elastic ring, thereby buffering and absorbing external forces. Multiple springs connect the first elastic ring and the second elastic ring into a whole, improving the effect of resisting external forces. Multiple buffer airbags absorb the pressure on the first elastic ring and the second elastic ring, thereby improving the effect of buffering and absorbing external forces, and thus improving the overall pressure resistance and wear resistance of the rubber piston.
[0007] As a further improvement to this technical solution, the second piston ring is provided with a first anti-compression ring and a second anti-compression ring inside, with the first anti-compression ring located outside the second anti-compression ring.
[0008] By adopting the above scheme, the first and second anti-compression rings resist external tensile forces, thereby preventing the rubber piston from being deformed or even damaged by the force.
[0009] As a further improvement to this technical solution, mounting rings are provided on the outer edges of the top and bottom ends of the second piston ring, and the two mounting rings are symmetrically arranged at both ends of the second piston ring.
[0010] By adopting the above scheme, the two mounting rings facilitate the installation of the second piston ring with the external cylinder block.
[0011] As a further improvement to this technical solution, chamfers are provided at both the top and bottom of the inner wall of the first piston ring, and the chamfers are provided at the outer edge of the inner surface of the first piston ring.
[0012] By adopting the above solution, the chamfer facilitates the installation and connection inside the first piston ring.
[0013] As a further improvement to this technical solution, the surfaces of both the first piston ring and the second piston ring are coated with an anti-corrosion coating, and the anti-corrosion coating is a polyurethane coating layer.
[0014] By adopting the above solution, the anti-corrosion coating improves the anti-corrosion effect on the surfaces of the first and second piston rings.
[0015] As a further improvement to this technical solution, the longitudinal cross-sections of the first and second pressure-resistant rings are both circular, and both the first and second pressure-resistant rings are steel ring structures.
[0016] By adopting the above scheme, the first and second anti-compression rings of the steel ring structure improve the overall tensile strength of the rubber piston.
[0017] As a further improvement to this technical solution, a plurality of reinforcing ribs are fixedly provided between the first and second anti-compression rings, and the plurality of reinforcing ribs are distributed at equal intervals.
[0018] By adopting the above scheme, multiple reinforcing ribs connect the first and second compression rings into a whole, thereby improving the effect of resisting tensile force.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] 1. This wear-resistant rubber piston, through the setting of a wear-resistant mechanism, has a first piston ring that compresses a first elastic ring and a second elastic ring, thereby buffering and absorbing external forces. Multiple springs connect the first elastic ring and the second elastic ring into a whole, improving the effect of resisting external forces. Multiple buffer airbags absorb the pressure on the first elastic ring and the second elastic ring, thereby improving the effect of buffering and absorbing external forces, and thus improving the overall pressure resistance and wear resistance of the rubber piston.
[0021] 2. This wear-resistant rubber piston, by setting a first and a second anti-compression ring, when the rubber piston as a whole is subjected to tension, pulls the second piston ring. The first and second anti-compression rings, with their steel ring structure, resist the external tension, thereby preventing the rubber piston from deforming or even being damaged by the force, and improving the overall tensile strength of the rubber piston. Multiple reinforcing ribs connect the first and second anti-compression rings into a whole, improving the effect of resisting tensile force. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a cross-sectional structural schematic diagram of the first piston ring of the utility model;
[0024] Figure 3 This is a schematic diagram of the wear-resistant mechanism of the utility model.
[0025] Figure 4 This is a cross-sectional structural schematic diagram of the second piston ring of the utility model.
[0026] The meanings of the labels in the diagram are as follows:
[0027] 1. First piston ring; 2. Second piston ring; 3. Wear-resistant mechanism; 31. First elastic ring; 32. Second elastic ring; 33. Buffer airbag; 34. Spring; 4. First anti-compression ring; 5. Second anti-compression ring; 6. Mounting ring; 7. Chamfer; 8. Reinforcing rib. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In the description of this 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Please see Figures 1-3 As shown, this utility model provides a rubber piston with good wear resistance, including a first piston ring 1, and a second piston ring 2 fixedly sleeved on the outside of the first piston ring 1. The first piston ring 1 and the second piston ring 2 form a whole rubber piston. An annular cavity is formed inside the first piston ring 1. The first piston ring 1 is composed of upper and lower parts connected together. A wear-resistant mechanism 3 is provided at the annular cavity of the first piston ring 1. The wear-resistant mechanism 3 includes a first elastic ring 31 and a second elastic ring 32. The first elastic ring 31 and the second elastic ring 32 are both disposed in the annular cavity, and the first elastic ring 31 and the second elastic ring 32 respectively abut against the two ends of the annular cavity. The first elastic ring 31 and the second elastic ring 32 are both made of highly elastic material. When the first piston ring 1 is squeezed by external force, the first piston ring 1 squeezes the first elastic ring 31 and the second elastic ring 32, thereby buffering and absorbing the external force. Multiple springs 34 are provided between the first elastic ring 31 and the second elastic ring 32. The two ends of the springs 34 are fixed to the first elastic ring 31 and the second elastic ring 32 respectively. The multiple springs 34 connect the first elastic ring 31 and the second elastic ring 32 into a whole, improving the effect of resisting external forces. Multiple buffer airbags 33 are provided between the first elastic ring 31 and the second elastic ring 32. The two sides of the buffer airbags 33 are bonded to the first elastic ring 31 and the second elastic ring 32 respectively. The multiple buffer airbags 33 are spaced apart from the springs 34. The multiple buffer airbags 33 absorb the pressure on the first elastic ring 31 and the second elastic ring 32, thereby improving the effect of buffering and absorbing external forces. The top and bottom ends of the inner wall of the first piston ring 1 are provided with chamfers 7. The chamfers 7 are located on the outer edge of the inner surface of the first piston ring 1. The chamfers 7 facilitate the installation and connection inside the first piston ring 1.
[0031] Please see Figure 1 and Figure 4As shown, mounting rings 6 are provided at both the top and bottom outer edges of the second piston ring 2. The two mounting rings 6 are symmetrically arranged at both ends of the second piston ring 2, facilitating the installation of the second piston ring 2 with the external cylinder. Inside the second piston ring 2, a first pressure-resistant ring 4 and a second pressure-resistant ring 5 are provided. The first pressure-resistant ring 4 is located outside the second pressure-resistant ring 5. Both the first pressure-resistant ring 4 and the second pressure-resistant ring 5 have a circular longitudinal cross-section and are steel ring structures. When the rubber piston as a whole is subjected to tensile force, it pulls the second piston ring 2, which is then moved through the steel ring structure. The first anti-compression ring 4 and the second anti-compression ring 5 resist external tensile forces, thereby preventing the rubber piston from deforming or even being damaged by the force, and improving the overall tensile strength of the rubber piston. Multiple reinforcing ribs 8 are fixedly arranged between the first anti-compression ring 4 and the second anti-compression ring 5. The multiple reinforcing ribs 8 are evenly distributed and connect the first anti-compression ring 4 and the second anti-compression ring 5 into a whole, improving the effect of resisting tensile forces. The surfaces of the first piston ring 1 and the second piston ring 2 are coated with an anti-corrosion coating, and the anti-corrosion coating is a polyurethane coating layer. The anti-corrosion coating improves the anti-corrosion effect of the surfaces of the first piston ring 1 and the second piston ring 2.
[0032] The specific working principle of this utility model is as follows: When the first piston ring 1 is compressed by an external force, the first piston ring 1 compresses the first elastic ring 31 and the second elastic ring 32, thereby buffering and absorbing the external force. Multiple springs 34 connect the first elastic ring 31 and the second elastic ring 32 into a whole, improving the effect of resisting external force. Multiple buffer airbags 33 absorb the pressure on the first elastic ring 31 and the second elastic ring 32, thereby improving the effect of buffering and absorbing external force, and thus improving the overall compressive strength and wear resistance of the rubber piston. When the rubber piston as a whole is subjected to tension, it pulls the second piston ring 2. The first anti-compression ring 4 and the second anti-compression ring 5 of the steel ring structure resist the external tension, thereby preventing the rubber piston as a whole from deforming or even being damaged by the force, and improving the overall tensile strength of the rubber piston.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A rubber piston with good wear resistance, comprising a first piston ring (1), a second piston ring (2) is fixedly sleeved outside the first piston ring (1), characterized in that: The first piston ring (1) has an annular cavity inside. A wear-resistant mechanism (3) is provided in the annular cavity of the first piston ring (1). The wear-resistant mechanism (3) includes a first elastic ring (31) and a second elastic ring (32). The first elastic ring (31) and the second elastic ring (32) are both disposed in the annular cavity. The first elastic ring (31) and the second elastic ring (32) respectively abut against the two ends of the annular cavity. A plurality of springs (34) are disposed between the first elastic ring (31) and the second elastic ring (32). The two ends of the springs (34) are fixed to the first elastic ring (31) and the second elastic ring (32) respectively. A plurality of buffer airbags (33) are disposed between the first elastic ring (31) and the second elastic ring (32). The two sides of the buffer airbags (33) are respectively bonded to the first elastic ring (31) and the second elastic ring (32). The plurality of buffer airbags (33) are spaced apart from the springs (34).
2. A rubber piston with good wear resistance according to claim 1, characterized in that: The second piston ring (2) is provided with a first pressure-resistant ring (4) and a second pressure-resistant ring (5) inside, and the first pressure-resistant ring (4) is located outside the second pressure-resistant ring (5).
3. A rubber piston with good wear resistance according to claim 1, characterized in that: The second piston ring (2) is provided with mounting rings (6) at both the top and bottom outer edges, and the two mounting rings (6) are symmetrically arranged at both ends of the second piston ring (2).
4. The wear-resistant rubber piston according to claim 1, characterized in that: The first piston ring (1) has chamfers (7) at both the top and bottom of its inner wall. The chamfers (7) are located on the outer edge of the inner surface of the first piston ring (1).
5. The rubber piston with good wear resistance according to claim 1, characterized in that: The surfaces of the first piston ring (1) and the second piston ring (2) are coated with an anti-corrosion coating, which is a polyurethane coating layer.
6. A rubber piston with good wear resistance according to claim 2, characterized in that: The longitudinal cross-sections of the first compression ring (4) and the second compression ring (5) are both circular, and both the first compression ring (4) and the second compression ring (5) are steel ring structures.
7. A rubber piston with good wear resistance according to claim 2, characterized in that: A plurality of reinforcing ribs (8) are fixedly provided between the first compression ring (4) and the second compression ring (5), and the plurality of reinforcing ribs (8) are distributed at equal intervals.