Buffer device for actuator drum
A buffer device and actuating cylinder technology, applied in the direction of fluid pressure actuators, etc., can solve the problems of complex curves and difficult processing, and achieve the effects of solving buffer failure, reliable operation, and eliminating the risk of mechanical impact
Active Publication Date: 2014-03-12
SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY
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Problems solved by technology
[0012] For the parabolic buffer plunger, if the parameters of the curve are selected properly, a very approximate constant deceleration and almost constant buffer pressure can be obtained, but its use is limited due to its complex curve and difficult processing
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the scope of the described embodiments. All these concepts should be regarded as the contents disclosed in this technology and the protection scope of the present invention.
[0024] refer to figure 1 , figure 2 , image 3 . In the embodiment described below, the buffer device for the actuator includes: the piston 1 that moves in the actuator through the piston rod and the end cover that is fixedly connected to the tail end of the actuator and has a buffer orifice 4 in the radial direction 5. The buffer plunger barrel 2 is fixedly connected to the front end stepped shaft of the piston 1 . The end cap 5 is formed with an annular groove that axially moves and fits the buffer plunger barrel 2 . The buffer orifice 4 is inclined radially along the end cover 5 and communicates with the buffer cavity 3 around th...
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The invention provides a buffer device for an actuator drum. The buffer device for the actuator drum comprises a piston (1) moving in the actuator drum by a piston rod, and an end cover (5) which is fixed at the tail end of the actuator drum and provided with a buffer throttle hole (4) in the radial direction; a buffer plunger drum (2) is formed at a step shaft at the front end of the piston; the end cover 5 is provided with an annular slot for being axially movably matched with the buffer plunger drum; when the buffer plunger drum moves to the end surface of the annular slot of the end cover, the piston 1 arrives in a certain distance before the stroke terminal, and an annular buffer cavity (3) of closed oil liquid is formed by contacting, so the closed oil liquid generates a proper buffer pressure, and the buffer pressure acts onto an oil discharging side of the piston and is countered with the inertia force of the piston; back oil in the annular slot is converged into the buffer throttle hole to be discharged out of the actuator drum, and the buffer speed reduction brake is realized. According to the buffer device for the actuator drum, the mechanical collision risk between the piston and the end cover is effectively eliminated, and the mechanical damage problem and the buffer failing problem when the speed of the actuator drum is reduced to zero when the actuator drum arrives at the stroke terminal are solved.
Description
technical field [0001] The present invention relates to a buffer device applied to an actuator of an aircraft hydraulic system, and more specifically, the present invention relates to a novel buffer structure that can be integrated in an actuator. Background technique [0002] When the actuators of the hydraulic transmission and control system, such as hydraulic cylinders, drag heavy parts for high-speed movement to the end of the stroke, if there is no suitable buffer device, severe pressure and blunt force shocks and vibrations often occur, causing the system The work is not stable, and harsh noises are generated at the same time, sometimes even the fasteners are loosened, the hydraulic transmission parts are damaged, and the life of the hydraulic components and the system is affected, which is very dangerous. Using the buffer device to reduce the stroke end speed of the actuator An effective way to avoid the above-mentioned ills. [0003] The impact of the hydraulic cyli...
Claims
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Inventor 袁洪回李焱刁志印郑红
Owner SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY