Platform type horizontal plane planar motion mechanism

Abstract

The invention discloses a platform type horizontal plane planar motion mechanism. The motion mechanism comprises a mechanism frame 14, a straight bearing 8, a roller bearing 15, a ball screw 11 and a swaying servo motor 20, wherein the mechanism frame is connected with an auxiliary trailer 10; an encoder 17 and a swaying frame 9 are connected with the mechanism frame 14 through the straight bearing 8 and the roller bearing 15 to form a swaying component; a composite bearing 12, a worm gear 13, a circumferential guide rail 6, a yawing servo motor 18, an encoder 19 and a connecting plate 5 are connected with the swaying frame 9 through the worm gear 13 to form a yawing component; the distance between a front connecting rod and a rear connecting rod 3 can be adjusted by a positive and negative screw 4; the lengths of the connecting rods 3 can be adjusted by a trapezoidal lead screw 7; and the upper ends of the front connecting rod and the rear connecting rod 3 are connected with the connecting plate 5, while the lower parts are connected with a joint 1, a force balance 2 and a ship model 16. A linear motion guide rail consisting of the straight line bearing and the roller bearing is adopted in the swaying component, so the swaying component has the advantage of high stability, large amplitude, and high precision. A rotary mechanism consisting of the composite bearing, the circumferential guide rail, the worm gear and a worm is used as the yawing moving component, so that the yawing moving component has the advantages of stable rotation, wide range of rotation angle, large torque, high self-locking property and high accuracy. The distance between the front connecting rod and the rear connecting rod and the lengths of the connecting rods are adjusted by using the positive and negative screw and the trapezoidal lead screw, so the mechanism has the advantages of convenience, accuracy and suitability for ship models with various specifications.

Description

technical field [0001] The invention relates to a ship model test, and more particularly relates to a mechanism for measuring the motion performance of a ship model. Background technique [0002] Plane motion mechanism for tank ship model test, this test technology was developed by the United States in the early 1950s, and has been widely used in tests of ships, aircraft, robots, etc. Most of the existing planar movement mechanisms on the horizontal plane of the ship pool adopt vertical installation and hydraulic drive. The hydraulic drive has a large volume, complex structure, difficult control, low precision, high sealing requirements, and it is easy to pollute the pool when oil leaks. Under the conditions of large amplitude and high frequency, the rigidity is poor, and it is easy to generate vibration, which affects the test accuracy. [0003] In order to solve the above problems, the present invention provides a platform-type horizontal plane motion mechanism for tank ...

AI Technical Summary

Problems solved by technology

The hydraulic drive has a large volume, complex structure, difficult control, low precision, high sealing requirements, and it is easy to pollute the pool when oil leaks

Under the conditions of large amplitude and high frequency, the rigidity is poor, and it is easy to generate vibration, which affects the test accuracy

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