A rebound hydraulic cylinder
A technology for hydraulic cylinders and cylinder liners, which is applied in the field of hydraulic pulsation fatigue test, can solve the problem of not meeting the loading requirements of hydraulic pulsation fatigue test system, and achieve the effects of small friction force, fast response, and satisfying load characteristics
Active Publication Date: 2017-03-08
JINAN RUISHENG MACHINERY
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Problems solved by technology
[0004] There are various types of engineering cylinders, which can be divided into single-acting cylinders and double-acting cylinders according to the form of action. According to the form of motion, they can be divided into linear motion cylinders and rotary (swing) cylinders. Linear motion cylinders are divided into single-rod cylinders and double-rod cylinders structurally , the steering of the pistons of the above oil cylinders is completed under the action of the hydraulic directional valve, and the reversing cannot be realized under the action of the pulsating oil pressure, so it cannot meet the loading requirements of the hydraulic pulsation fatigue test system
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[0018] Accompanying drawing is the specific embodiment of the present invention. Such as figure 1 As shown, this type of rebound hydraulic cylinder includes a movable part and a fixed part, and the movable part includes a front disc ball foot 1, a lock nut 2, a handle 3, a lead screw 5, a lead screw nut 4, and a connecting nut 6 , oil drain joint 7, front end cylinder cover 8 and piston 9, fixed part includes cylinder liner 10, oil drain valve 11, hook 13, fixed plate 14, oil inlet port 15 and tail end square ball seat 16, tail end square ball seat 16 is connected to the tail end of the cylinder liner 10 by bolts, it is the base for fixed installation of the cylinder liner 10, the upper end of the cylinder liner 10 is slidably sealed and connected to the front cylinder head 8, the piston 9 is located in the cylinder liner 10 and sealed by an oil film, and a part of the screw 5 Located in the piston 9, a part is located outside the piston 9, the lead screw 5 and the lead screw...
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The invention relates to the field of hydraulic pulse fatigue tests, in particular to a resilient type hydraulic cylinder. The resilient type hydraulic cylinder comprises a tail end square ball seat and a cylinder sleeve. A piston is arranged in the cylinder sleeve, and the upper end of the cylinder sleeve is connected with a front end cylinder cover in a sliding and sealing mode. A screw is arranged in the piston, the piston is provided with a screw nut, a connecting nut is arranged outside the screw nut and the piston, and a locking nut, a handle and a front end disk ball foot are arranged above the screw nut. An automatic piston resetting device is arranged between the front end cylinder cover and the cylinder sleeve. The front end cylinder cover is provided with oil drainage connectors, an oil drainage valve is arranged in the middle of the cylinder sleeve, and two oil inlet ports are formed in the lower part of the cylinder sleeve. According to the resilient type hydraulic cylinder, the influence of the mass of the movable part to the test results can be reduced, oil film sealing is adopted between the piston and the cylinder sleeve, the friction force is small, the response is fast, and the requirements of the load characteristic of pulse loading of hydraulic pulse fatigue test systems are met well.
Description
[0001] (1) Technical field [0002] The invention relates to the field of hydraulic pulsation fatigue tests, in particular to a rebound hydraulic cylinder. [0003] (2) Background technology [0004] There are various types of engineering cylinders, which can be divided into single-acting cylinders and double-acting cylinders according to the form of action, and divided into linear motion cylinders and rotary (swing) cylinders according to the form of motion. Linear motion cylinders are divided into single-rod cylinders and double-rod cylinders structurally. The steering of the pistons of the above oil cylinders is completed under the action of the hydraulic directional valve, which cannot be reversed under the action of the pulsating oil pressure, thus failing to meet the loading requirements of the hydraulic pulsation fatigue test system. [0005] (3) Contents of the invention [0006] In order to make up for the defects of the prior art, the present invention provides a reb...
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IPC IPC(8): F15B15/08F15B15/20
Inventor 庞国栋芮吉国胥芳张广武
Owner JINAN RUISHENG MACHINERY