Precision Y-shaped rod pure bending torque experiment device
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An experimental device, pure bending technology, used in measuring devices, using a stable bending force to test the strength of materials, instruments, etc., can solve problems such as large measurement errors and achieve the effect of improving accuracy
Active Publication Date: 2019-03-12
ANHUI UNIVERSITY
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In 2017, two scientists in the United States used a non-contact photography method to measure the bending angle of th
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specific Embodiment approach 1
[0016] Specific implementation mode one: combine figure 2 Embodiments of the device of the present invention will be described. In this embodiment, the mechanism includes the following parts: worm and gear transmission device 1, clamping device 2, angle and moment data acquisition device 3 and auxiliary support device 4;
[0017] Described worm gear transmission 1 comprises worm 101, worm wheel 102, worm gear shaft 103, moving Z-shaped plate 104, first bearing 105, sleeve 106, positioning pin 107, hand wheel 108, fixed Z-shaped plate 109, the second bearing 110, the third bearing 111, the snap spring 112;
[0018] The clamping device 2 includes an upper pressing plate 201, a lower supporting plate 202, an L-shaped plate 203, and a hexagon socket head cap screw 204;
[0019] The angle and torque data acquisition device includes a potentiometer 301, a connecting block 302, a torque sensor 303, a shaft coupling 304, a U-shaped plate 305, and a set screw 306;
[0020] The auxi...
specific Embodiment approach 2
[0022] Embodiment 2: The worm gear 1 realizes a large transmission ratio reduction through the worm wheel 102 and the worm 101 .
specific Embodiment approach 3
[0023] Embodiment 3: The clamping device 2 can clamp human-shaped rods of different sizes by adjusting the distance between the upper pressing plate 201 and the lower supporting plate 202 .
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Abstract
The invention discloses a precision Y-shaped rod pure bending torque experiment device. The precision Y-shaped rod pure bending torque experiment device is characterized in that the clamping end at the left side can be axially moved along the horizontal direction by double guide rails; the clamping end at the right side is rotated along the vertical direction by a worm and a gear which are the same with a worm and a gear of the left side; the power is inputted by hand wheels which are connected with the worms at the two sides of the clamping ends, and the worms and the gears are driven to rotate; the Y-shaped rods of different sizes can be fixed by an elliptical hole in an L-shaped plate of the clamping end of the Y-shaped rod; the bending torque and angle in the bending process of the Y-shaped rod are respectively collected by a torque sensor and an angle sensor; the angle sensors and the torque sensors of the same model are respectively arranged at the two ends, so as to ensure thatthe symmetric deformation of the Y-shaped rod only produces bending but not torsion in the measuring process, so as to more precisely collect the data. The precision Y-shaped rod pure bending torque experiment device has the advantage that the theoretical foundation is provided through the study on the mechanical property in the pure bending process of the Y-shaped rod for the application of theY-shaped rod in the actual engineering.
Description
technical field [0001] The invention relates to an experimental device for pure bending moment of a precision humanoid rod, which belongs to the technical field of superelastic extension rods in space expandable mechanisms. Background technique [0002] The human-shaped rod is a thin-walled cylindrical shell similar to a spring, and its cross-section is similar to the shape of a "herringbone". The cross-section of the human-shaped rod can be flattened, and can be wound around a cylindrical drum to achieve folding, and rely on its own elastic deformation to achieve self-deployment. In 2011, NASA's first solar sail deployed in space featured a humanoid pole. The human-shaped pole has the characteristics of light weight, high folding ratio, high rigidity, high strength and self-expanding. It is made of two belt springs through special technology. Although the structure of the two strip springs constituting the humanoid rod is simple, the mechanical properties of the humanoid ...
Claims
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