A cylinder anti-rust device

Abstract

This utility model relates to the field of hydraulic cylinder technology, specifically a rust-proof device for hydraulic cylinders. It includes a hydraulic cylinder base, a hydraulic cylinder hinge, a cylinder barrel, and an upper connector. The end of the cylinder barrel furthest from the cylinder base is connected to the upper connector via a piston rod. The upper connector is connected to the end of the cylinder barrel furthest from the cylinder base via a protective sleeve. The protective sleeve is fitted onto the piston rod. The protective sleeve includes a connecting part, a first mounting sleeve, and a second mounting sleeve. A vent hole is provided on the side of the protective sleeve near the second mounting sleeve. Through the first and second sealing sleeves at both ends, the protective sleeve forms a sealed protective space at the connection between the piston rod and the cylinder barrel, effectively isolating corrosive media such as rainwater, mud, and salt spray from direct contact with the critical components of the hydraulic cylinder, thus extending the service life of the hydraulic cylinder. The protective sleeve body is a flexible design with an internal cavity, providing ample deformation space for the reciprocating motion and lifting of the piston rod.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and specifically to a rust prevention device for hydraulic cylinders. Background Technology

[0002] In a vehicle's power transmission and actuation system, the hydraulic cylinder, as a core hydraulic actuator, plays a crucial role in converting hydraulic energy into mechanical energy. It is widely used in vehicle suspension adjustment, braking control, power steering, and the driving of various work devices. Its operational stability directly determines the vehicle's handling performance, safety performance, and service life. Especially for vehicles deployed in overseas markets, which need to adapt to the complex and diverse natural environments and road conditions of different regions, even more stringent requirements are placed on the reliability and durability of the hydraulic cylinders.

[0003] However, the hydraulic cylinders currently used in overseas models generally face two major quality problems in actual use: oil leakage and corrosion. These problems severely restrict the normal operation of the vehicles and significantly increase the maintenance costs for users and the after-sales pressure on car manufacturers.

[0004] Therefore, we propose a rust prevention device for hydraulic cylinders. Utility Model Content

[0005] The main objective of this invention is to provide a rust prevention device for hydraulic cylinders. The protective sleeve, through the first and second sealing sleeves at both ends, forms a sealed protective space at the connection between the piston rod and the cylinder barrel, effectively isolating the direct contact between corrosive media such as rainwater, mud, and salt spray and the key components of the hydraulic cylinder, thus extending the service life of the hydraulic cylinder. The protective sleeve body is designed to be flexible and has an internal cavity, providing sufficient deformation space for the reciprocating motion and lifting of the piston rod, which can effectively solve the problems in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A rust prevention device for hydraulic cylinders includes a hydraulic cylinder base, a hydraulic cylinder hinge, a cylinder barrel, and an upper connector. The hydraulic cylinder base is fixedly connected to one end of the cylinder barrel. The hydraulic cylinder hinge is installed at the end of the hydraulic cylinder base away from the cylinder barrel. The end of the cylinder barrel away from the hydraulic cylinder base is connected to the upper connector through a piston rod. The upper connector is connected to the end of the cylinder barrel away from the hydraulic cylinder base through a protective sleeve. The protective sleeve is fitted onto the piston rod. The protective sleeve includes a connecting part, a first mounting sleeve, and a second mounting sleeve. The first mounting sleeve and the second mounting sleeve are annular structures. A vent hole is provided on the side of the protective sleeve near the end of the second mounting sleeve. The first mounting sleeve has a first sealing sleeve glued to its inner wall, and the second mounting sleeve has a second sealing sleeve glued to its inner wall. A support member is embedded in the center of both the first and second sealing sleeves.

[0007] By adopting the above technical solution, the protective sleeve forms a sealed protective space at the connection between the piston rod and the cylinder barrel of the hydraulic cylinder through the first and second sealing sleeves at both ends. This effectively isolates the direct contact between corrosive media such as rainwater, mud, and salt spray and the key components of the hydraulic cylinder, thus extending the service life of the hydraulic cylinder.

[0008] Specifically, one end of the protective sleeve is fixedly connected to the outer side of the upper connector via a first clamp, and the other end of the protective sleeve is fixedly connected to the outer side of the cylinder barrel away from the oil cylinder base via a second clamp.

[0009] Specifically, the protective sleeve has a connecting part at one end, a first cavity inside the protective sleeve, and a second cavity inside the connecting part, with the second cavity communicating with the first cavity.

[0010] Specifically, a first mounting sleeve is fixedly connected to the center of the end of the connecting part away from the protective sleeve, and a second mounting sleeve is connected to the end of the protective sleeve away from the connecting part.

[0011] Specifically, both the first sealing sleeve and the second sealing sleeve are circular structures, and both the first sealing sleeve and the second sealing sleeve have an adhesive layer on their outer sides.

[0012] Specifically, the first sealing sleeve is placed on the outside of the upper connector, and the second sealing sleeve is placed on the outside of the cylinder.

[0013] The beneficial effects of this utility model are as follows: The rust prevention device for hydraulic cylinders described in this utility model forms a sealed protective space at the connection between the piston rod and the cylinder barrel of the hydraulic cylinder through the first and second sealing sleeves at both ends. This effectively isolates the direct contact between corrosive media such as rainwater, mud, and salt spray and the key components of the hydraulic cylinder, thus extending the service life of the hydraulic cylinder. The sealing design of the protective sleeve not only prevents rust but also prevents hard impurities such as dust and sand from entering the dustproof ring and sealing system of the hydraulic cylinder. The protective sleeve body is a flexible design with an internal cavity, providing sufficient deformation space for the reciprocating motion and lifting of the piston rod. The embedded support inside the sealing sleeve provides the necessary radial support force for the sealing part, ensuring a tight and uniform fit between the sealing sleeve and the cylinder component, preventing twisting or detachment during operation, thus ensuring long-term effective sealing protection. The entire protective sleeve is fixed by the first and second clamps, making installation and disassembly very simple and quick, requiring no special tools. The vent holes designed on the protective sleeve can balance the air pressure inside and outside the sleeve, preventing positive or negative pressure from being generated inside the protective sleeve due to the movement of the piston rod when the cylinder is working, thereby avoiding abnormal bulging or collapsing of the protective sleeve, ensuring its working stability and durability. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the protective sleeve of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a perspective view of the protective sleeve of this utility model; In the diagram: 1. Cylinder base; 2. Cylinder hinge; 3. Cylinder barrel; 4. Upper connector; 5. Protective sleeve; 501. Connecting part; 502. First mounting sleeve; 503. Second mounting sleeve; 504. Second cavity; 6. First clamp; 7. Second clamp; 8. Vent hole; 9. First sealing sleeve; 10. Second sealing sleeve; 11. Adhesive layer; 12. Support component. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] As one embodiment of this utility model, such as Figures 1-4 As shown, the present invention provides a rust prevention device for a hydraulic cylinder, comprising a hydraulic cylinder base 1, a hydraulic cylinder hinge 2, a cylinder barrel 3, and an upper connector 4. One end of the cylinder barrel 3 is fixedly connected to the hydraulic cylinder base 1. The hydraulic cylinder hinge 2 is installed at the end of the hydraulic cylinder base 1 away from the cylinder barrel 3. The end of the cylinder barrel 3 away from the hydraulic cylinder base 1 is connected to the upper connector 4 through a piston rod. The upper connector 4 is connected to the end of the cylinder barrel 3 away from the hydraulic cylinder base 1 through a protective sleeve 5. The protective sleeve 5 is sleeved on the piston rod. The protective sleeve 5 includes a connecting part 501, a first mounting sleeve 502, and a second mounting sleeve 503. The first mounting sleeve 502 and the second mounting sleeve 503 are annular structures. A vent hole 8 is provided on the side of the protective sleeve 5 near the end of the second mounting sleeve 503. The first mounting sleeve 502 has a first sealing sleeve 9 fixedly glued to its inner wall, and the second mounting sleeve 503 has a second sealing sleeve 10 fixedly glued to its inner wall. A support member 12 is embedded in the center of both the first sealing sleeve 9 and the second sealing sleeve 10.

[0018] When in use, when the vehicle is moving or the working device is operating, the piston rod of the oil cylinder moves back and forth relative to the cylinder 3 under the drive of hydraulic oil; at this time, the flexible protective sleeve 5 extends and retracts accordingly, and its internal cavity structure provides sufficient deformation space; the first sealing sleeve 9 and the second sealing sleeve 10 always maintain close contact with the upper connector 4 and the cylinder 3 respectively, forming a dynamic seal; impurities and moisture in the external environment are effectively blocked by the protective sleeve 5 and the sealing sleeve; the vent hole 8 maintains the internal and external pressure balance.

[0019] This utility model also includes that one end of the protective sleeve 5 is fixedly connected to the outside of the upper connector 4 through the first clamp 6, and the other end of the protective sleeve 5 is fixedly connected to the outside of the cylinder 3 away from the oil cylinder base 1 through the second clamp 7.

[0020] The present invention also includes a connecting part 501 at one end of the protective sleeve 5, a first cavity inside the protective sleeve 5, and a second cavity 504 inside the connecting part 501, wherein the second cavity 504 communicates with the first cavity.

[0021] The present invention further includes a first mounting sleeve 502 fixedly connected to the end of the connecting part 501 away from the protective sleeve 5 at the center, and a second mounting sleeve 503 connected to the end of the protective sleeve 5 away from the connecting part 501.

[0022] The present invention also includes that the first sealing sleeve 9 and the second sealing sleeve 10 are both annular structures, and the outer side of the first sealing sleeve 9 and the second sealing sleeve 10 are provided with an adhesive layer 11.

[0023] The present invention also includes that the first sealing sleeve 9 is fitted on the outside of the upper connector 4, and the second sealing sleeve 10 is fitted on the outside of the cylinder 3.

[0024] When using this utility model, the protective sleeve 5 needs to be assembled onto the oil cylinder first. The inner wall of the first mounting sleeve 502 at one end of the protective sleeve 5 is fixed with a first sealing sleeve 9, and the inner wall of the second mounting sleeve 503 at the other end of the protective sleeve 5 is fixed with a second sealing sleeve 10. The first sealing sleeve 9 is placed on the outside of the upper connector 4, and the second sealing sleeve 10 is placed on the outside of the cylinder 3. The first clamp 6 is placed on the outside of the upper connector 4 to make one end of the protective sleeve 5 firmly connected to the upper connector 4. Then, the second clamp 7 is placed on the outside of the cylinder 3 at the end away from the oil cylinder base 1 to make the other end of the protective sleeve 5 firmly connected to the cylinder 3. The protective sleeve 5 is placed on the piston rod. When the vehicle is moving or the working device is operating, the piston rod of the hydraulic cylinder moves back and forth relative to the cylinder 3 under the drive of hydraulic oil; at this time, the flexible protective sleeve 5 extends and retracts accordingly, and its internal cavity structure provides sufficient deformation space; the first sealing sleeve 9 and the second sealing sleeve 10 always maintain close contact with the upper connector 4 and the cylinder 3 respectively, forming a dynamic seal; impurities and moisture in the external environment are effectively blocked by the protective sleeve 5 and the sealing sleeve; the vent hole 8 maintains the internal and external pressure balance.

[0025] 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 descriptions of the above embodiments and specifications are merely illustrative of the principles of this 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 protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cylinder rust preventing device characterized by comprising: The device includes a cylinder base (1), a cylinder hinge (2), a cylinder barrel (3), and an upper connector (4). The cylinder barrel (3) is fixedly connected to the cylinder base (1) at one end. The cylinder hinge (2) is installed at the end of the cylinder base (1) away from the cylinder barrel (3). The end of the cylinder barrel (3) away from the cylinder base (1) is connected to the upper connector (4) through a piston rod. The upper connector (4) is connected to the end of the cylinder barrel (3) away from the cylinder base (1) through a protective sleeve (5). The protective sleeve (5) is fitted on the piston rod. The protective sleeve (5) includes a connecting part (501), a first mounting sleeve (502), and a second mounting sleeve (503). The first mounting sleeve (502) and the second mounting sleeve (503) are circular ring structures. The protective sleeve (5) has a vent hole (8) on one side near the end of the second mounting sleeve (503). The first mounting sleeve (502) has a first sealing sleeve (9) fixedly glued to its inner wall, and the second mounting sleeve (503) has a second sealing sleeve (10) fixedly glued to its inner wall. A support member (12) is embedded in the center of the first sealing sleeve (9) and the second sealing sleeve (10).

2. The anti-rust device for oil cylinder according to claim 1, characterized in that, One end of the protective sleeve (5) is fixedly connected to the outside of the upper connector (4) via the first clamp (6), and the other end of the protective sleeve (5) is fixedly connected to the outside of the cylinder barrel (3) away from the oil cylinder base (1) via the second clamp (7).

3. The anti-rust device for oil cylinder according to claim 1, characterized in that, The protective sleeve (5) has a connecting part (501) at one end, a first cavity inside the protective sleeve (5), and a second cavity (504) inside the connecting part (501), which is connected to the first cavity.

4. The anti-rust device for oil cylinder according to claim 3, characterized in that, The first mounting sleeve (502) is fixedly connected to the end of the connecting part (501) away from the protective sleeve (5) at the center, and the second mounting sleeve (503) is connected to the end of the protective sleeve (5) away from the connecting part (501).

5. The anti-rust device for oil cylinder according to claim 1, characterized in that, The first sealing sleeve (9) and the second sealing sleeve (10) are both annular structures, and the outer sides of the first sealing sleeve (9) and the second sealing sleeve (10) are provided with an adhesive layer (11).

6. A rust prevention device for hydraulic cylinders according to claim 5, characterized in that, The first sealing sleeve (9) is placed on the outside of the upper connector (4), and the second sealing sleeve (10) is placed on the outside of the cylinder (3).

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