Sealed hydraulic oil cylinder
By combining a double-layer sealing ring design with a monitor, the problem of oil leakage caused by damage to the hydraulic cylinder sealing ring is solved, enabling timely replacement and protection of the equipment and environment.
Patent Information
- Application Number
- CN202423129325.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The existing hydraulic cylinders have cracked, worn, or aged seals that cause oil leakage, which is difficult to detect and replace in time, affecting normal operation and causing equipment and environmental pollution.
It adopts a double-layer sealing ring design and is equipped with a monitor to monitor the sealing ring status in real time. When the sealing ring is damaged, oil is supplied to the monitor through the oil inlet pipe to remind it to be replaced. Combined with a dustproof device and filter screen, it prevents external dust and impurities from entering and contaminating.
Effectively prevents oil leakage, promptly detects and replaces damaged seals, ensures normal operation of the oil cylinder, and avoids equipment and environmental pollution.
Smart Images
Figure CN223498340U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a sealed hydraulic cylinder. Background Technology
[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy to perform linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device, eliminates transmission backlash, and provides smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.
[0003] When existing hydraulic cylinders develop problems such as cracking, wear, or aging of the sealing rings around the piston, oil will leak out through the gaps. It is usually difficult to detect these hidden dangers and replace them in time. This not only affects the normal operation of the hydraulic cylinder, but also causes pollution to surrounding equipment and the environment. Utility Model Content
[0004] To solve the above problems, this utility model provides a sealed hydraulic cylinder, which avoids the leakage of oil through gaps when the sealing ring around the piston inside the existing cylinder cracks, wears, or ages. These hidden dangers are usually difficult to detect and replace in time, which not only affects the normal operation of the cylinder, but also causes pollution to surrounding equipment and the environment.
[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a sealed hydraulic cylinder, including a base, a cylinder fixed on the upper side of the base, an air guide pipe and an oil guide pipe respectively provided on the upper and lower parts of the cylinder, a cylinder cover connected to the upper part of the cylinder, a fixing block fixed on the upper side of the cylinder cover, a dustproof device provided inside the fixing block, a piston rod passing through the inside of the cylinder cover, a piston head fixed at the lower end of the piston rod, a sealing device provided inside the piston head, a monitor fixed inside the piston head, and an oil inlet pipe connected to the lower side of the monitor;
[0006] The sealing device includes a rotating column rotatably connected to both sides inside the piston head. Gears are fixed in the middle and lower part of the rotating column. The two gears are meshed with tooth grooves. A locking block is fixedly connected to the tooth grooves. The locking block engages with the sealing ring.
[0007] As an improvement, the sealing ring is provided with grooves on both sides near the locking block.
[0008] As an improvement, the dustproof device includes a sleeve rotatably connected inside the fixed block, a screw is provided inside the sleeve, and a dust-collecting plate is fixed to the end of the screw away from the sleeve.
[0009] As an improvement, the dust collection plate is made of magnetic material.
[0010] As an improvement, a through hole is provided in the middle of the cylinder head, and a sealing sleeve is provided inside the through hole of the cylinder head.
[0011] As an improvement, a filter screen is installed inside the air duct.
[0012] The advantages of this invention compared to existing technologies are as follows: By setting two layers of sealing rings for sealing through a sealing device, and by setting a monitor to monitor whether the sealing rings are damaged, it avoids the problem that when the sealing rings around the piston inside the existing oil cylinder crack, wear or aging occurs, the oil will leak out through the gaps. It is usually difficult to detect these hidden dangers in time and replace them. This not only affects the normal operation of the oil cylinder, but also causes pollution to surrounding equipment and the environment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a partial structural schematic diagram of the present invention.
[0015] As shown in the figure: 1. Base; 2. Oil cylinder; 3. Cylinder head; 4. Fixing block; 5. Dustproof device; 501. Sleeve; 502. Screw; 503. Dust suction plate; 6. Piston rod; 7. Piston head; 8. Sealing device; 801. Sealing ring; 802. Clamping block; 803. Gear groove; 804. Gear; 805. Rotating column; 9. Monitor; 10. Oil inlet pipe; 11. Oil guide pipe; 12. Air guide pipe. Detailed Implementation
[0016] The present invention will now be described in further detail with reference to the accompanying drawings.
[0017] In specific implementation, this utility model is combined with Figures 1 to 2 A sealed hydraulic cylinder includes a base 1, with a cylinder 2 fixed on the upper side of the base 1. The upper and lower parts of the cylinder 2 are respectively provided with an air guide pipe 12 and an oil guide pipe 11. The air guide pipe 12 and the oil guide pipe 11 are responsible for effectively delivering gas and liquid to different areas of the cylinder to ensure stable operation of the cylinder. A filter screen is provided inside the air guide pipe 12 to filter impurities in the gas. A cylinder cover 3 is connected to the upper part of the cylinder 2. A fixing block 4 is fixed on the upper side of the cylinder cover 3. A dustproof device 5 is provided inside the fixing block 4 to effectively prevent external dust from entering the cylinder 2.
[0018] The dustproof device 5 includes a sleeve 501 rotatably connected inside the fixed block 4. A screw 502 is provided inside the sleeve 501. A dust-collecting plate 503 is fixed to the end of the screw 502 away from the sleeve 501. The dust-collecting plate 503 is made of magnetic material.
[0019] In the implementation of this utility model, when the piston rod 6 is moving, the rotating sleeve 501 causes the threaded screw 502 to push the dust suction plate 503 toward the piston rod 6, thereby adsorbing the dust attached to the outside of the piston rod 6.
[0020] A through hole is provided in the middle of the cylinder head 3, and a sealing sleeve is provided inside the through hole of the cylinder head 3 to ensure that the liquid or gas inside the oil cylinder 2 will not leak. A piston rod 6 passes through the inside of the cylinder head 3, and a piston head 7 is fixed at the lower end of the piston rod 6. A sealing device 8 is provided inside the piston head 7, and a monitor 7 is fixed inside the piston head 7. An oil inlet pipe 10 is connected to the lower side of the monitor 7.
[0021] The sealing device 8 includes a rotating column 805 rotatably connected to both sides inside the piston head 7. Gears 804 are fixed in the middle and lower parts of the rotating column 805. The two gears 804 are meshed with tooth grooves 803. A locking block 802 is fixedly connected to the tooth groove 803. The locking block 802 is engaged with the sealing ring 801. The sealing ring 801 has grooves on both sides near the locking block 802.
[0022] In the implementation of this utility model, by rotating the rotating column 805, the gear 804 is driven to rotate, which causes the meshing tooth groove 803 to drive the locking block 802 to move, so that the locking block 802 is locked and fixed with the sealing ring 801. When the lower sealing ring 801 cracks, the oil enters the monitor 7 through the oil inlet pipe 10, reminding the staff to replace the lower sealing ring 801.
[0023] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A sealed hydraulic cylinder, characterized in that: Includes a base (1), on the upper side of which a cylinder (2) is fixed. The upper and lower parts of the cylinder (2) are respectively provided with an air guide pipe (12) and an oil guide pipe (11). The upper part of the cylinder (2) is connected to a cylinder head (3). A fixing block (4) is fixed on the upper side of the cylinder head (3). A dustproof device (5) is provided inside the fixing block (4). A piston rod (6) passes through the inside of the cylinder head (3). A piston head (7) is fixed at the lower end of the piston rod (6). A sealing device (8) is provided inside the piston head (7). A monitor (9) is fixed inside the piston head (7). An oil inlet pipe (10) is connected to the lower side of the monitor (9). The sealing device (8) includes a rotating column (805) rotatably connected to both sides inside the piston head (7). Gears (804) are fixed in the middle and lower part of the rotating column (805). The two gears (804) are meshed with tooth grooves (803). A locking block (802) is fixedly connected to the tooth groove (803). The locking block (802) engages with the sealing ring (801).
2. A sealed hydraulic cylinder according to claim 1, characterized in that: The sealing ring (801) has grooves on both sides near the locking block (802).
3. A sealed hydraulic cylinder according to claim 1, characterized in that: The dustproof device (5) includes a sleeve (501) rotatably connected inside the fixed block (4), and a screw (502) is provided inside the sleeve (501). A dust suction plate (503) is fixed to one end of the screw (502) away from the sleeve (501).
4. A sealed hydraulic cylinder according to claim 3, characterized in that: The dust collection plate (503) is made of magnetic material.
5. A sealed hydraulic cylinder according to claim 1, characterized in that: The cylinder head (3) has a through hole in the middle, and a sealing sleeve is provided inside the through hole of the cylinder head (3).
6. A sealed hydraulic cylinder according to claim 1, characterized in that: The air duct (12) is equipped with a filter screen inside.