Protective hydraulic cylinder
By designing a detachable protective shell and sealing ring structure on the hydraulic cylinder, the problem of foreign matter entering the cylinder in the prior art is solved, and the hydraulic cylinder is effectively protected and sealed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG SAMP MASCH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-26
AI Technical Summary
The existing protective housing only protects the hydraulic cylinder as a whole, without installing a sealing ring on the output shaft, which allows debris to enter the interior of the protective housing.
A protective hydraulic cylinder was designed, which adopts a detachable protective shell structure, including a fixed plate, a slider, a clamping plate and a rotating plate. The rotating plate drives the slider and the clamping plate to clamp the sealing ring. The sealing ring works in conjunction with the hydraulic cylinder body to prevent foreign objects from entering.
It achieves effective protection for hydraulic cylinders, the seals are replaceable and adaptable to different bore diameters, thus improving protection and sealing performance.
Smart Images
Figure CN224283089U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder technology, and more specifically, to a protective hydraulic cylinder. Background Technology
[0002] Hydraulic cylinders are actuators in hydraulic transmission systems, serving as energy conversion devices that efficiently convert hydraulic energy into mechanical energy. Hydraulic cylinders can be broadly categorized into three types: piston cylinders, plunger cylinders, and oscillating cylinders. All three types can achieve reciprocating motion. Piston and plunger cylinders achieve reciprocating linear motion, outputting speed and thrust, while oscillating cylinders achieve reciprocating oscillation, outputting speed and torque. Besides individual use, hydraulic cylinders can be combined in pairs or with other mechanisms to perform specific functions.
[0003] Currently, to prevent hydraulic cylinders from being damaged in harsh environments, such as sand casting or foundry environments, where they may be damaged by iron filings or sand, protective shells are installed on the outside of the hydraulic cylinder. However, some existing protective shells only protect the hydraulic cylinder as a whole and do not have a sealing ring on the output shaft of the hydraulic cylinder, which allows some debris to enter the inside of the protective shell. Therefore, we provide a protective hydraulic cylinder. Utility Model Content
[0004] The purpose of this invention is to provide a protective hydraulic cylinder to solve the problems mentioned in the background section.
[0005] Some existing protective housings only protect the hydraulic cylinder as a whole, without installing a sealing ring on the output shaft of the hydraulic cylinder, which allows some debris to enter the interior of the protective housing.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A protective hydraulic cylinder includes a hydraulic cylinder body. A protective shell is detachably connected to the outside of the hydraulic cylinder body. There are two protective shells. One of the protective shells has a fixed plate fixedly connected inside. A groove is formed on the upper surface of the fixed plate, and a slider is slidably connected inside the groove. A clamping plate is fixedly connected to the top of the slider. A sealing ring is detachably connected to the outside of the clamping plate and works in conjunction with the hydraulic cylinder body. A rotating plate is rotatably connected inside the protective shell and above the fixed plate. A sliding groove is formed on the lower surface of the rotating plate, and a sliding rod is slidably connected inside the groove. The sliding rod is fixedly connected to the clamping plate.
[0008] Preferably, the outer wall of the rotating plate is fitted with the inner wall of the protective shell.
[0009] Preferably, the groove is a regular hexagonal structure, the outer sidewall of the slider fits against the inner sidewall of the groove, and there are six sliders in total, which are symmetrically distributed.
[0010] Preferably, the rotating plate has a through hole inside, and a bolt is detachably connected inside the through hole. The protective shell has a screw hole inside, which is used in conjunction with the bolt.
[0011] Preferably, a limiting groove is formed inside the rotating plate, and a limiting block is slidably connected inside the limiting groove, and the limiting block is fixedly connected to the protective shell.
[0012] Preferably, both the limiting groove and the limiting block have a T-shaped cross-section.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] Rotating the rotating plate forward causes the sliding rod to move the six clamping plates away from each other, placing the sealing ring in the center of the six clamping plates. Then, rotating the rotating plate in the opposite direction causes the six clamping plates to move closer together, clamping and fixing the sealing ring. The two assembled protective shells are then fixed with screws, completing the installation between the protective shell and the hydraulic cylinder body. The protective shell protects the hydraulic cylinder body, while the sealing ring prevents foreign objects from entering the protective shell, ensuring protective capability. The sealing ring has an overall I-shaped structure, and sealing rings with different hole diameters can be replaced as needed to improve adaptability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the protective shell of this utility model.
[0017] Figure 3 This is a schematic diagram of the structure of the clamping plate of this utility model.
[0018] Figure 4 This is a schematic diagram of the groove structure of this utility model.
[0019] Figure 5 This is a schematic diagram of the slider of this utility model.
[0020] Figure 6 This is a schematic diagram of the rotating plate of this utility model.
[0021] The following are the labels in the diagram: 1. Hydraulic cylinder body; 2. Protective shell; 3. Sealing ring; 4. Fixing plate; 5. Groove; 6. Slider; 7. Clamping plate; 8. Rotating plate; 9. Slide groove; 10. Slide rod; 11. Through hole; 12. Bolt; 13. Screw hole; 14. Limiting groove; 15. Limiting block. Detailed Implementation
[0022] 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.
[0023] Please see Figures 1 to 6 A protective hydraulic cylinder includes a hydraulic cylinder body 1. A protective shell 2 is detachably connected to the outside of the hydraulic cylinder body 1. There are two protective shells 2, which are connected and fixed together by screws. A fixing plate 4 is fixedly connected inside one of the protective shells 2. A groove 5 is formed on the upper surface of the fixing plate 4. A slider 6 is slidably connected inside the groove 5. A clamping plate 7 is fixedly connected to the top of the slider 6. A sealing ring 3 is detachably connected to the outside of the clamping plate 7. The sealing ring 3 has an I-shaped structure and can be replaced with sealing rings of different diameters as needed to improve adaptability. The sealing ring 3 works in conjunction with the hydraulic cylinder body 1. A rotating plate 8 is rotatably connected inside the protective shell 2 and above the fixing plate 4. A sliding groove 9 is formed on the lower surface of the rotating plate 8. A sliding rod 10 is slidably connected inside the sliding groove 9 and fixedly connected to the clamping plate 7. When the rotating plate 8 rotates, it moves the clamping plate 7 through the sliding groove 9 and the sliding rod 10, causing the clamping plate 7 to clamp and fix the sealing ring 3.
[0024] Furthermore, the outer wall of the rotating plate 8 is fitted to the inner wall of the protective shell 2, and the rotating plate 8 and the protective shell 2 are tightly fitted together, which can ensure the overall sealing performance.
[0025] Furthermore, the groove 5 has a regular hexagonal structure, and the outer side wall of the slider 6 fits against the inner side wall of the groove 5. There are six sliders 6 in total, and the six sliders 6 are symmetrically distributed. When the rotating plate 8 rotates, it can drive the six clamping plates 7 to move simultaneously, and clamp and fix the sealing ring 3 through the clamping plates 7.
[0026] Furthermore, the rotating plate 8 has a through hole 11 inside, and a bolt 12 is detachably connected inside the through hole 11. The protective shell 2 has a screw hole 13 inside, which is used in conjunction with the bolt 12. Multiple screw holes 13 are provided on the protective shell 2, and the bolt 12 and screw holes 13 are used to position the rotating plate 8 and the protective shell 2.
[0027] Furthermore, a limiting groove 14 is provided inside the rotating plate 8, and a limiting block 15 is slidably connected inside the limiting groove 14. The limiting block 15 is fixedly connected to the protective shell 2. The limiting groove 14 and the limiting block 15 limit the movement between the rotating plate 8 and the protective shell 2, making the rotating plate 8 more stable when rotating.
[0028] Furthermore, both the limiting groove 14 and the limiting block 15 have a T-shaped cross-section, which prevents the limiting block 15 from detaching from the limiting groove 14. This allows the limiting groove 14 and the limiting block 15 to limit the movement between the rotating plate 8 and the protective shell 2, preventing the rotating plate 8 from detaching from the protective shell 2.
[0029] The steps for using this utility model are as follows: When using this protective hydraulic cylinder, the rotating plate 8 is rotated in the forward direction. The rotating plate 8 presses the sliding rod 10 through the sliding groove 9, causing the sliding rod 10 to drive the six clamping plates 7 away from each other. The sealing ring 3 is placed in the center position of the six clamping plates 7. Then, the rotating plate 8 is rotated in the reverse direction, causing the six clamping plates 7 to move closer to each other and clamp and fix the sealing ring 3. The rotating plate 8 is positioned by bolts 12 and screw holes 13. The hydraulic cylinder body 1 is placed into the protective shell 2, and the output shaft of the hydraulic cylinder body 1 passes through the sealing ring 3. The two assembled protective shells 2 are fixed by screws, completing the installation between the protective shell 2 and the hydraulic cylinder body 1. The protective shell 2 protects the hydraulic cylinder body 1, and the sealing ring 3 prevents foreign objects from entering the interior of the protective shell 2, ensuring the protective capability.
[0030] 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 protective hydraulic cylinder, comprising a hydraulic cylinder body (1), a protective shell (2) is detachably connected to the outside of the hydraulic cylinder body (1), characterized in that: There are two protective shells (2). One of the protective shells (2) has a fixed plate (4) fixedly connected inside. The upper surface of the fixed plate (4) has a groove (5). The groove (5) has a slider (6) slidably connected inside. The top of the slider (6) has a clamping plate (7) fixedly connected. The clamping plate (7) has a sealing ring (3) detachably connected to the outside. The sealing ring (3) is used in conjunction with the hydraulic cylinder body (1). The protective shell (2) has a rotating plate (8) rotatably connected inside and above the fixed plate (4). The lower surface of the rotating plate (8) has a sliding groove (9). The sliding groove (9) has a sliding rod (10) slidably connected inside. The sliding rod (10) is fixedly connected to the clamping plate (7).
2. A guarded hydraulic cylinder according to claim 1, characterized in that: The outer wall of the rotating plate (8) is attached to the inner wall of the protective shell (2).
3. The guarded hydraulic cylinder of claim 1, wherein: The groove (5) is a regular hexagonal structure. The outer side wall of the slider (6) is in contact with the inner side wall of the groove (5). There are six sliders (6) in total, and the six sliders (6) are symmetrically distributed.
4. The guarded hydraulic cylinder of claim 1, wherein: The rotating plate (8) has a through hole (11) inside, and a bolt (12) is detachably connected inside the through hole (11). The protective shell (2) has a screw hole (13) inside, and the screw hole (13) is used in conjunction with the bolt (12).
5. The guarded hydraulic cylinder of claim 1, wherein: The rotating plate (8) has a limiting groove (14) inside, and a limiting block (15) is slidably connected inside the limiting groove (14). The limiting block (15) is fixedly connected to the protective shell (2).
6. A guarded hydraulic ram as claimed in claim 5 wherein: The cross-sections of the limiting groove (14) and the limiting block (15) are both T-shaped structures.