一种便于维修的油缸
By designing a cylinder body inspection port and a detachable piston rod connection in the hydraulic cylinder, the problem of traditional hydraulic cylinders requiring overall disassembly and repair is solved, achieving the effects of rapid maintenance and reduced leakage risk.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGDU YONGHENGPNEUMATIC HYDRAULIC PRESSURE SUITE OF EQUIPMEN
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional hydraulic cylinders have complex structures, are difficult to maintain, require complete disassembly, and are prone to leakage due to loose bolts. They also have high maintenance costs and are difficult to replace vulnerable parts individually.
The cylinder block bottom inspection port is connected to the cavity, the piston rod and oil-impregnated bushing are detachably connected, the external pipe is connected by a tapered nut, the pressure plate and piston are embedded and fitted, and multiple sealing designs are implemented.
It enables individual disassembly and repair, shortens maintenance time, reduces leakage risk, extends equipment life, and reduces maintenance costs.
Smart Images
Figure CN224515531U_ABST
Abstract
Claims
1. A hydraulic cylinder that is easy to maintain, comprising a cylinder body, a piston rod, and a piston; characterized in that, The cylinder body is an open-end structure with a guide sleeve at the opening. A cavity is located at the bottom of the cylinder body, and an inspection port at the bottom of the cylinder body connects to the cavity. The cavity connects to the rodless chamber, and the inspection port is sealed with a cap. An oil seat is located on the side of the bottom of the cylinder body, with a rodless chamber oil port and a rod chamber oil port on the oil seat. The rodless chamber oil port connects to the cavity via an oil passage, and the rod chamber oil port connects to the rod chamber via an external pipe. One end of the piston rod is an insertion end, with a piston at the insertion end. The piston body is embedded in the insertion end, and the outer surface of the piston is pressed by a pressure plate. The other end of the piston rod is detachably connected to an oil-impregnated bushing.
2. The oil cylinder according to claim 1, wherein The piston has a circular protrusion at the center of its outer side surface, and the pressure plate has an annular protrusion on the side of its outer side surface near the piston. The annular protrusion and the circular protrusion are fitted together.
3. The oil cylinder of claim 2, wherein, The pressure plate has a rubber layer on both its inner and outer sides. The center of the pressure plate is connected to the insertion end face by a main bolt, and the periphery of the center of the pressure plate is connected to the insertion end face by a secondary bolt.
4. The oil cylinder of claim 2, wherein, The auxiliary bolts on the outer periphery of the center of the pressure plate are located within the inner diameter range of the cavity.
5. The oil cylinder of claim 2, wherein, The rod chamber oil port extends to the other side with a connecting pipe. The opening of the connecting pipe is set as a conical inner opening. One end of the external pipe is set as a conical outer opening. The conical outer opening and the conical inner opening are fitted by rotating and pressing with a nut. The other end of the external pipe is connected to the oil inlet pipe of the rod chamber through a plug pipe.
6. A hydraulic cylinder that is easy to maintain according to claim 2, characterized in that, The piston rod is connected to the oil-impregnated bushing by a thread and is further limited by a locking bolt.