Bernoulli's principle train safety line tester
A safety line and Bernoulli technology, applied in the field of train safety line experiment equipment, can solve problems such as poor mastery, unimpressed students, lack of perceptual knowledge, etc., and achieve the effect of convenient experimental operation
Inactive Publication Date: 2015-10-14
杨梓恒
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Problems solved by technology
However, due to the lack of corresponding experimental verification and the support of perceptual knowledge, students are not impressed and mastered it poorly
Method used
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Embodiment Construction
[0015] Such as figure 1 As shown, the base plate 1 is provided side by side with two horizontal rods 6 simulating rails, the horizontal rods 6 are fixed on the base plate 1 through the rod feet 2 at both ends, and the base plates on both sides of the horizontal rod 6 are provided with marks of safety lines 7 , a dolly 4 is pierced on the flat rod 6, and the dolly 4 is provided with two through holes 5 for the horizontal rod 6 to pass through, so that the dolly 4 can only slide back and forth along the flat rod 6, and each flat Both ends of the release rod 6 are sleeved with compression springs 3 .
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Disclosed is a Bernoulli's principle train safety line tester. The Bernoulli's principle train safety line tester is characterized by comprising a base plate simulating a train platform, and model persons. The base plate is provided with two flat rods simulating rails side by side, the flat rods are fixed on the base plate through rod feet at two ends, the base plate at the two sides of the flat rods are provided with marks of safety lines, a dolly simulating a train is connected with the flat rods in a penetrating mode, the dolly is provided with two through holes penetrating the dolly from the front to the back for penetrating the flat rods so as to enable the dolly to slide back and forth along the flat rods, and the two ends of each flat rod are connected with compression springs in a sleeved mode. The model persons are placed on the base plate within the safety lines, and when the dolly is held to retreat backwards to compress the springs and is suddenly released, the dolly rapidly moves forwards under the effect of the springs and drives air at inner sides to flow rapidly, such that the model persons fall towards the inner sides under the effect of negative pressure.
Description
[0001] technical field [0002] The invention relates to a physical experiment tool, in particular to a train safety line experimenter based on Bernoulli's principle. [0003] Background technique [0004] After learning Bernoulli's principle, students should understand its application in life. The most important application is to understand why the safety line is set up on the train platform. Theoretically speaking, when the train passes by at high speed, the air flow between the train and the people standing on the platform is fast, so the pressure will decrease; while the air flow outside the people is slower and the pressure is higher, so the people will be affected. "Forward pushing force" has the danger of being caught under the train wheels. In order to avoid this danger, a white (yellow) safety line should be drawn at a certain distance from the train, and stand outside the safety line. Safe. However, due to the lack of corresponding experimental verification and...
Claims
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Login to View More IPC IPC(8): G09B23/12
CPCG09B23/12
Inventor 杨梓恒
Owner 杨梓恒