Automatic exhaust dredging ship jacking hydraulic cylinder
A hydraulic cylinder and automatic exhaust technology, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system safety, mechanical equipment, etc., can solve the problems of undetectable oil cylinder and whether the oil is mixed with air, etc., so as to increase the strength and use The effect of improving life and safety performance
Active Publication Date: 2017-03-29
CHANGZHOU HYH HYDRAULIC EQUIP
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: in order to solve the problem in the prior art that it is impossible to detect whether the oil in the oil cylinder is mixed with air, an automatic air exhaust system that detects whether there is air in the oil on line and can discharge the air in time is now provided. Dredging ship jacking hydraulic cylinder
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Embodiment 1
[0020] Such as Figure 1-3 As shown, an automatic exhaust dredging ship jacking hydraulic cylinder includes a cylinder barrel 1 with a piston rod chamber 101 and a cylinder bottom 2 and a cylinder head 3 installed at both ends of the cylinder barrel 1, and the piston rod chamber 101 is provided with Piston rod 4, the piston rod 4 passes through the cylinder head 3, the cylinder barrel 1 is provided with a mounting hole 5 communicating with the piston rod chamber 101, and a light beam capable of emitting and receiving light beams is installed in the mounting hole 5 A reflective photoelectric switch 6, a light reflection layer is provided on the peripheral surface of the piston rod 4, an exhaust port 7 communicating with the piston rod cavity 101 is provided on the cylinder barrel 1, and the exhaust port 7 is installed in series The ball valve 8 is cleverly used. When there is no air in the oil in the oil cylinder, the light beam emitted by the reflective photoelectric switch 6 ...
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The invention relates to the technical field of automatic exhausting of hydraulic oil cylinders, in particular to a jacking hydraulic oil cylinder with automatic exhausting and vessel dredging functions. The jacking hydraulic oil cylinder comprises a cylinder barrel, a cylinder bottom and a cylinder lid, wherein the cylinder barrel is provided with a piston rod cavity, and the cylinder bottom and the cylinder lid are installed at the two ends of the cylinder barrel respectively. A piston rod is arranged in the piston rod cavity. The piston rod penetrates through the cylinder lid. An installing hole communicated with the piston rod cavity is formed in the cylinder barrel. A reflection-type optoelectronic switch capable of emitting and receiving light beams is installed in the installing hole. A light reflecting layer is arranged on the surface of the piston rod. An exhausting port communicated with the piston rod cavity is formed in the cylinder barrel. A ball valve or an electromagnetic ball valve is installed in the exhausting port. When air is mixed in oil, light generated by the reflection-type optoelectronic switch can be reflected by a chromium coating on the piston rod, then the light is fed back to a hydraulic control system, the electromagnetic ball valve is opened through the hydraulic control system, and manual exhausting or automatic exhausting is conducted according to settings. By means of the jacking hydraulic oil cylinder, the potential safety hazards caused when air is mixed into the jacking hydraulic oil cylinder can be eliminated, the safety performance of the oil cylinder is greatly improved, and the service life of the piston rod and a cylinder body is prolonged.
Description
technical field [0001] The invention relates to the technical field of automatic exhaust of hydraulic cylinders, in particular to an automatic exhaust hydraulic cylinder for lifting dredging ships. Background technique [0002] The dredging ship is a common dredger, and the task of the dredger is to carry out underwater earthwork construction. In the cutter suction dredging ship, two jacking hydraulic cylinders are installed vertically and are at the highest point of the hydraulic system. Although the exhaust operation will be performed in the initial operation, the air mixed in the hydraulic system will still gather in the cylinder after a period of time. , if it cannot be discharged in time, the two symmetrically installed and used oil cylinders will move unbalanced, and the oil cylinders will be easily damaged. What is more dangerous is that the load cable will break due to accidents such as wind waves or unbalanced operation of the two oil cylinders, and the high-pressur...
Claims
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IPC IPC(8): F15B15/20F15B20/00
Inventor 陈新吴霄峰王静
Owner CHANGZHOU HYH HYDRAULIC EQUIP