Two-axis rocking platform system driven by reverse communication of cylinders

Abstract

The invention provides a dual-axis rocking motion platform system driven by reverse communication with cylinders. The secondary axes intersect vertically, the drive cylinder is connected to the bottom plate through a universal joint, and the upper end of the cylinder rod is connected to the swing platform through a ball joint; the four drive cylinders are symmetrically distributed around the intersection of the first and second rotary axes, and are divided into two pairs. The upper chamber and the lower chamber of the oil cylinder are connected in reverse, and the two oil cylinders are controlled by the servo valve to push and pull in reverse. The four oil cylinders are controlled by two input signals to realize two push and two pull to directly drive the swing platform to realize two-axis swing motion. The present invention solves the problem of asymmetric driving force of the two cylinders of the biaxial swing platform and redundant control of the multi-cylinder drive. The mobile module and the rotating module can be connected in series to form a multi-axis motion platform, and cranes, gangways and excavators can be further added. And so on constitute the equipment with compensation function.

Description

technical field [0001] The invention belongs to the field of hydraulic drive, and in particular relates to a dual-axis rocking platform system driven in reverse communication with cylinders. Background technique [0002] At present, countries are paying more and more attention to the ocean, and the methods of exploiting marine resources are becoming more and more diversified. Due to the six-dimensional sway of operating platforms such as ships under the action of wind and surge, this requires a multi-dimensional motion platform to provide a Stable operating platform to ensure safety. At present, the traditional six-degree-of-freedom Stewart platform is widely used, but this six-degree-of-freedom parallel mechanism has a small working space and complex control. It cannot bear large loads in applications, especially heavy and unbalanced loads, and cannot meet the work of large and heavy loads. need. The traditional two-degree-of-freedom rocking platform is mostly a series st...

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the existing inner and outer frame series swing platform in terms of large-scale heavy and eccentric loads, the present invention proposes a dual-axis swing platform system driven by reverse communication with the cylinders. By forming a pair of four drive cylinders and forming a symmetrical arrangement, The upper and lower chambers of each pair of oil cylinders are connected in reverse, and the four drive cylinders are directly connected to the base and the swing platform, which realizes the need for redundant drive control, and the four cylinders are symmetrically directly connected in parallel to drive the swing platform to realize biaxial swing motion, which effectively solves the existing internal and external problems. Frame series swing platform has problems such as small rigidity difference of bearing load in stages and series drive, asymmetric direct drive force of two cylinders, and difficulty in multi-cylinder direct drive redundant drive control, etc., especially suitable for large-scale, heavy and eccentric load motion platforms

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