Suspending release device for observing drop vibration attitude changes of lander and test method

A test method for a suspending release device for observing the drop vibration attitude changes of a lander, the device comprising a bench system (1), wherein a lifting system (2) is arranged at a top end of the bench system (1);

• a horizontal frame system (3) is arranged in a horizontal direction of the bench system (1) and is configured to vertically slide along the bench system (1);
• an attitude control system (4) and a suspending release device (5) are arranged at a lower end of the horizontal frame system (3) in sequence;
• and high-speed cameras (6) configured to observe the drop vibration attitude changes of the lander are further arranged in the suspending release device;
• the test method comprising:
• checking whether parts of the bench system (1), the lifting system (2), the horizontal frame system (3), the attitude control system (4), the suspending release system (5), high-speed cameras (6) work normally, and fixing a release sliding block (509) comprised in the suspending release system (5) and the lander (7);
• engaging the release sliding block (509) and the inward concave part of a main load bearing block (501) comprised in the suspending release system (5), and sending an electric pulse signal of a fixed frequency and time to a driver by a controller, controlling a second motor (511) comprised in the suspending release system (5) by the driver to start rotating, driving a large gear disc (502) comprised in the suspending release system (5) by a small gear disc (510) comprised in the suspending release system (5) to rotate, and driving each of guide rods (507) by a corresponding one of transmission rods (505) comprised in the suspending release system (5) to retract and lock towards a center of the inward concave part of the main load bearing block (501) according to a crank-sliding block principle;
• determining a release attitude of the suspending release system (5) to be at a predetermined horizontal or inclined angle by controlling a length of a telescopic structure in the electric push rod (44);
• lifting the horizontal frame system (3) to a predetermined height through the lifting system (2), and starting the high-speed cameras (6) to conduct video recording;
• sending an electric pulse signal of a predetermined frequency to the driver by the controller, driving a first motor (311) comprised in the horizontal frame system (3) by the driver to rotate at a preset rotating velocity, and driving a horizontal sliding block (312) comprised in the horizontal frame system (3) to slide at a preset horizontal velocity;
• sending an electric pulse signal with high frequency and short time by the controller after the horizontal sliding block reaches a predetermined position, and controlling the second motor (511) by the driver to work, driving the guide rods (507) to slide outwards, unlocking the release sliding block (509) releasing the lander (7) according to a predetermined attitude, and recording data continuously by the high-speed cameras (6);
• rechecking an operating state of each of the parts of the bench system (1), the lifting system (2), the horizontal frame system (3), the attitude control system (4), the suspending release system (5), high-speed cameras (6), setting a next group of horizontal velocity and release attitude, and repeating above steps to continue test.