High-precision dustproof sealing cover for hydraulic oil cylinder
By designing a high-precision dustproof sealing cover for hydraulic cylinders and utilizing a combination of movable plates and limiting components, the problem of insufficient dustproof convenience in existing technologies has been solved, achieving a better sealing effect.
Patent Information
- Application Number
- CN202520447459.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing dustproof devices for hydraulic cylinders neglect the issue of preventing dust, sand, and other impurities from easily entering the cylinder.
A high-precision dustproof sealing cover for hydraulic cylinders was designed. Through the combination of movable plate, limit component and threaded rod, the connecting pipe and connecting plate are fixed, which enhances the dustproof effect.
It improves the ease of preventing dust, sand and other impurities from entering the oil cylinder and enhances the sealing effect.
Smart Images

Figure CN223894616U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dustproof sealing technology, specifically a high-precision dustproof sealing cover for hydraulic cylinders. Background Technology
[0002] The main function of the dustproof sealing cover for hydraulic cylinders is to prevent external impurities such as dust, sand, and rainwater from entering the interior of the hydraulic cylinder, thus protecting the cleanliness and normal operation of the hydraulic cylinder. The dustproof sealing cover for hydraulic cylinders is made of various materials, including nylon cloth, insulating roll material, rubber composite cloth, waterproof cloth, flame-retardant cloth, high-temperature resistant cloth, and acid and alkali resistant cloth. Its installation methods include wire ring support type, sewn type, zipper type, hook and loop type, and snap type.
[0003] The applicant discovered through a search that a Chinese patent discloses "A dustproof device for a hydraulic cylinder," with publication (announcement) number "CN213206153U." This patent mainly uses a dustproof device to protect the hydraulic cylinder from dust, preventing dust from falling into the oil nozzle, the holes of the hydraulic telescopic rod, and into the hydraulic cylinder itself, thus affecting the later use of the hydraulic cylinder and reducing maintenance costs. However, the above text neglects the convenience of preventing dust, sand, and other impurities from entering the cylinder. Therefore, we propose a high-precision dustproof sealing cover for hydraulic cylinders. Summary of the Invention
[0004] The purpose of this invention is to provide a high-precision dustproof sealing cover for hydraulic cylinders.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision hydraulic cylinder dustproof sealing cover, comprising a device body, a movable component, and a limiting component. The movable component is installed on the left side of the device body, and the limiting component is installed on the right side of the device body. The movable component includes a movable plate A, a movable plate B, a connecting column, a limiting block, a snap-fit plate, a slot box, and a threaded rod. One end of both the movable plate A and the movable plate B are movably connected to the outer surface of the connecting column. The bottom of the limiting block is fixedly connected to the other end of the movable plate A. The bottom of the snap-fit plate is fixedly connected to the top of the limiting block. The bottom of the slot box is fixedly connected to the other end of the movable plate B. The top walls of the slot box and the snap-fit plate are provided with threaded holes suitable for the threaded rod, and the outer surface of the threaded rod is threadedly connected to the inner wall of the threaded hole.
[0006] As a further embodiment of this utility model: the device body includes a connecting pipe, an insulating telescopic pipe and a connecting plate, the side of the connecting pipe is fixedly connected to one end of the insulating telescopic pipe, and the other end of the insulating telescopic pipe is fixedly connected to one side of the connecting plate.
[0007] As a further embodiment of this utility model: the limiting assembly includes an A limiting plate, a B limiting plate, a connecting block, a rotating rod, and a rotating ring. The front sides of the A limiting plate and the B limiting plate are provided with cavities suitable for the connecting block. The outer surface of the connecting block is movably connected to the inner wall of the cavity. The top of the B limiting plate and the connecting block is provided with a circular hole suitable for the rotating rod. The outer surface of the rotating rod is movably connected to the inner wall of the circular hole. The bottom of the rotating ring is fixedly connected to the top of the rotating rod.
[0008] As a further embodiment of this utility model: the inner walls of both the A movable plate and the B movable plate are movably connected to the outer surface of the connecting pipe, and the B movable plate is located in front of the A movable plate.
[0009] As a further embodiment of this utility model: the front of the card slot box is provided with a square hole suitable for the buckle plate, and the top of the buckle plate is movably connected to the inner wall of the square hole.
[0010] As a further embodiment of this utility model: one side of the A limiting plate is fixedly connected to the side of the connecting plate, and the A limiting plate is located above the insulating telescopic tube.
[0011] As a further embodiment of this utility model: the side of the B limiting plate is movably connected to the other side of the connecting plate, and the B limiting plate is located on the right side of the connecting plate.
[0012] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:
[0013] 1. This utility model uses movable plates A and B to wrap around the outside of the connecting pipe. At this time, the buckle plate is placed in the buckle box and the buckle plate is fixed in this position by using the threaded rod. This achieves a certain degree of fixation and secondary fastening of the connecting pipe, and increases the convenience of preventing dust, sand and other impurities from entering the oil cylinder.
[0014] 2. This utility model places the connecting plate in a suitable position, then places the B limiting plate on the side of the connecting plate, connects the A limiting plate and the B limiting plate with a connecting block, and then fixes the rotating rod to the top of the B limiting plate, thus achieving a certain degree of fixation of the connecting plate and increasing the convenience of fixing the connecting plate in a suitable position.
[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description
[0016] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the device body in an embodiment of the present utility model;
[0018] Figure 3 This is a schematic diagram of the active components in an embodiment of the present utility model;
[0019] Figure 4 for Figure 3 Enlarged diagram of section A in the middle;
[0020] Figure 5 This is a schematic diagram of the limiting component in an embodiment of the present utility model.
[0021] In the diagram: 1. Equipment body; 11. Connecting pipe; 12. Insulated telescopic pipe; 13. Connecting plate; 2. Movable component; 21. Movable plate A; 22. Movable plate B; 23. Connecting column; 24. Limiting block; 25. Snap plate; 26. Slot box; 27. Threaded rod; 3. Limiting component; 31. Limiting plate A; 32. Limiting plate B; 33. Connecting block; 34. Rotating rod; 35. Rotating ring. Detailed Implementation
[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.
[0023] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0024] Please see the appendix Figure 1 - Appendix Figure 5 This utility model discloses a high-precision hydraulic cylinder dustproof sealing cover, including a device body 1, a movable component 2, and a limiting component 3. The movable component 2 is installed on the left side of the device body 1, and the limiting component 3 is installed on the right side of the device body 1. The movable component 2 includes an A movable plate 21, a B movable plate 22, a connecting column 23, a limiting block 24, a snap-fit plate 25, a slot box 26, and a threaded rod 27. One end of the A movable plate 21 and the B movable plate 22 are movably connected to the outer surface of the connecting column 23. The bottom of the limiting block 24 is fixedly connected to the other end of the A movable plate 21. The bottom of the snap-fit plate 25 is fixedly connected to the top of the limiting block 24. The bottom of the slot box 26 is fixedly connected to the other end of the B movable plate 22. The top walls of the slot box 26 and the snap-fit plate 25 are provided with threaded holes suitable for the threaded rod 27. The outer surface of the threaded rod 27 is threadedly connected to the inner wall of the threaded hole.
[0025] In the first embodiment, the equipment body 1 includes a connecting pipe 11, an insulating telescopic pipe 12, and a connecting plate 13. The side of the connecting pipe 11 is fixedly connected to one end of the insulating telescopic pipe 12, and the other end of the insulating telescopic pipe 12 is fixedly connected to one side of the connecting plate 13.
[0026] Specifically, the connecting column 23 serves to connect movable plate A 21 and movable plate B 22, increasing the convenience of connecting movable plate A 21 and movable plate B 22 to a certain extent. The buckle plate 25 serves to cooperate with the card slot box 26 to fix movable plate A 21 and movable plate B 22.
[0027] In embodiment 2, the limiting assembly 3 includes a limiting plate A 31, a limiting plate B 32, a connecting block 33, a rotating rod 34, and a rotating ring 35. The front sides of the limiting plate A 31 and the limiting plate B 32 are provided with cavities suitable for the connecting block 33. The outer surface of the connecting block 33 is movably connected to the inner wall of the cavity. The top of the limiting plate B 32 and the connecting block 33 is provided with circular holes suitable for the rotating rod 34. The outer surface of the rotating rod 34 is movably connected to the inner wall of the circular hole. The bottom of the rotating ring 35 is fixedly connected to the top of the rotating rod 34.
[0028] Specifically, the insulated telescopic tube 12 prevents dust, sand and other impurities from entering the cylinder, thus increasing the convenience of preventing dust, sand and other impurities from entering the cylinder. The rotating ring 35 fixes and removes the rotating rod 34, thus increasing the convenience of fixing and removing the rotating rod 34.
[0029] Working principle:
[0030] First, the workers wrap the connecting pipe 11 with movable plates A 21 and B 22. Then, the buckle plate 25 is placed in the slot box 26 and the threaded rod 27 is used to fix the buckle plate 25 in its current position. At the same time, the connecting plate 13 is placed in a suitable position, and then the B limiting plate 32 is placed on the side of the connecting plate 13. Then, the A limiting plate 31 and the B limiting plate 32 are connected by the connecting block 33. Finally, the rotating rod 34 is fixed to the top of the B limiting plate 32. At this point, the entire process is completed.
[0031] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.
[0034] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.
Claims
1. A high-precision hydraulic cylinder dustproof sealing cover, comprising a device body (1), a movable component (2), and a limiting component (3), wherein the movable component (2) is installed on the left side of the device body (1), and the limiting component (3) is installed on the right side of the device body (1), characterized in that: The movable component (2) includes an A movable plate (21), a B movable plate (22), a connecting column (23), a limiting block (24), a snap plate (25), a slot box (26), and a threaded rod (27). One end of the A movable plate (21) and the B movable plate (22) are movably connected to the outer surface of the connecting column (23). The bottom of the limiting block (24) is fixedly connected to the other end of the A movable plate (21). The bottom of the snap plate (25) is fixedly connected to the top of the limiting block (24). The bottom of the slot box (26) is fixedly connected to the other end of the B movable plate (22). The slot box (26) and the snap plate (25) have threaded holes suitable for the threaded rod (27) on their eastern sides. The outer surface of the threaded rod (27) is threadedly connected to the inner wall of the threaded hole.
2. The high-precision hydraulic cylinder dustproof sealing cover according to claim 1, characterized in that: The device body (1) includes a connecting pipe (11), an insulating telescopic pipe (12), and a connecting plate (13). The side of the connecting pipe (11) is fixedly connected to one end of the insulating telescopic pipe (12), and the other end of the insulating telescopic pipe (12) is fixedly connected to one side of the connecting plate (13).
3. The high-precision hydraulic cylinder dustproof sealing cover according to claim 1, characterized in that: The limiting component (3) includes a limiting plate A (31), a limiting plate B (32), a connecting block (33), a rotating rod (34), and a rotating ring (35). The front of the limiting plate A (31) and the limiting plate B (32) are provided with cavities suitable for the connecting block (33). The outer surface of the connecting block (33) is movably connected to the inner wall of the cavity. The top of the limiting plate B (32) and the connecting block (33) is provided with a circular hole suitable for the rotating rod (34). The outer surface of the rotating rod (34) is movably connected to the inner wall of the circular hole. The bottom of the rotating ring (35) is fixedly connected to the top of the rotating rod (34).
4. A high-precision hydraulic cylinder dustproof sealing cover according to claim 2, characterized in that: The inner walls of both movable plate A (21) and movable plate B (22) are movably connected to the outer surface of the connecting pipe (11), and movable plate B (22) is located in front of movable plate A (21).
5. A high-precision hydraulic cylinder dustproof sealing cover according to claim 2, characterized in that: The front of the card slot box (26) is provided with a square hole suitable for the buckle plate (25), and the top of the buckle plate (25) is movably connected to the inner wall of the square hole.
6. A high-precision hydraulic cylinder dustproof sealing cover according to claim 3, characterized in that: One side of the A limiting plate (31) is fixedly connected to the side of the connecting plate (13).
7. A high-precision hydraulic cylinder dustproof sealing cover according to claim 6, characterized in that: The A limiting plate (31) is located above the insulating telescopic tube (12).
8. A high-precision hydraulic cylinder dustproof sealing cover according to claim 3, characterized in that: The side of the B limiting plate (32) is movably connected to the other side of the connecting plate (13).
9. A high-precision hydraulic cylinder dustproof sealing cover according to claim 8, characterized in that: The B limiting plate (32) is located on the right side of the connecting plate (13).
Citation Information
Patent Citations
Dustproof device for hydraulic oil cylinder
CN213206153U