Swing mechanism demonstration instrument and demonstration method thereof

A demonstrator and mechanism technology, applied in the field of swing mechanism demonstrator and its demonstration, to achieve the effect of self-excited vibration elimination

Pending Publication Date: 2021-08-06
AIR FORCE UNIV PLA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The swing devices in the above-mentioned patents only focus on showing the phenomenon that the swing becomes higher and higher, but do not explore the state and law of swing movement, the principle of swing and the mechanism of energy conversion in physics t

Method used

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  • Swing mechanism demonstration instrument and demonstration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] The present invention provides a swinging mechanism presentation instrument including a first vertical rod 5, a second vertical rod 6, and a third stand that can be stabilized to the surface of the rectangular base 1 and the vertically fixed in the base 1. The rod 15 and the fourth vertical rod 16 are.

[0035] The top portions of the first thirtly rod 5 and the second vertical rod 6 are fixedly connected to the top of the first cross member 9, the top of the third vertical rod 15, and the fourth vertical rod 16 have a second beam 14; the first vertical rod 5, the second The vertical rod 6 and the first beam 9 are configured as the third vertical rod 15, the fourth vertical rod 16, and the second beam 14, and the angle sensor 23 connected to the rotating shaft 10 is attached to the outside of the first cross member 9, and the angle sensor 23 passes angle sensors. Cable 27 Connect the controller 17.

[0036] A rotating shaft 10 is provided between the firs...

Example Embodiment

[0054] Example 2

[0055] The present invention provides a swinging mechanism presentation instrument, and is different from that of the first embodiment in that the traction rope 12 drawing weight 21 is moved up and down, and the controller 17 and the connection motor cable of the stepping motor 19 are used. 18 Remove the traction rope 12 from the drive wheel 20 of the step motor 19, and adjust the length of the traction rope 12, and adjust the length of the traction rope 12 to the vertical rod 4. A certain position, thus determining the swing of swing, then the hand-held traction rope 12 keeps it in a tensioned state and stationary.

[0056] The power source of the angle sensor 23 and the controller 17 is turned on, so that the angle sensor 23 and the controller 17 are in the standby state.

[0057] Confirm that the touch screen of the controller 17 shows real-time data of the status quantity of the swing angle, angular velocity.

[0058] Take a blank paper on the trajectory dis...

Example Embodiment

[0063] Example 3

[0064] The present invention provides a swinging mechanism presentation instrument, and is different from that of Example 2, manually dragging the lending rope 12 to move up and down the weight of the "high-spirited low station" to achieve a high swing. Change the frequency of "high-snack", such as completing 2 "high-snack" actions in a swing cycle in swing, or completed 1 "high squatting" in a swing cycle of swing. Action, you can also complete other situations such as "Gaozheng Low Station" in the two swing cycles of swing, etc., the higher the swing, the experimental device can demonstrate the difference between self-excited vibration and resonance. .

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PUM

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Abstract

The invention discloses a swing mechanism demonstration instrument and a demonstration method thereof. The swing mechanism demonstration instrument comprises a base, wherein two pairs of supporting rods are installed on the base; a first cross beam for fixing an angle sensor is connected to the tops of one pair of supporting rods, a track display screen is mounted on the inner side of the bottom, and a second cross beam with a fixed pulley on the top is connected to the other pair of supporting rods; a rotating shaft with a fixed pulley is rotationally mounted between the two cross beams, a first swing rod and a second swing rod which are identical are connected to the rotating shaft, and a horizontal swing plate is mounted at the lower ends of the two swing rods; an angle pointer is mounted on one side of the swing plate; a weight bracket and a weight which can slide up and down are sleeved on the two swing rods; one side of the weight is connected with a connecting rod used for mounting a track drawing pen; the top of the weight bracket is hooked with a traction rope which passes through the two fixed pulleys, is wound on a driving wheel of a stepping motor and is used for lifting the weight; and the angle sensor and the stepping motor are connected with a controller. The demonstration instrument demonstrates swing playing method of squatting at a high position and standing at a low position, the influence of different parameters on swing playing and the difference between the different parameters and resonance.

Description

technical field [0001] The invention belongs to the field of teaching instruments and equipment, and in particular relates to a swing mechanism demonstration instrument and a demonstration method thereof. Background technique [0002] Swinging is a traditional folk sport. The method of swinging is to "squat high and stand low", that is, squat down quickly when the swing reaches the highest point, and stand up quickly when the swing reaches the lowest point; the functional principle of swinging It can be explained that the limbs of the human body make the body's center of mass move up and down according to the above rhythm to do work, transforming the internal energy of the human body into the mechanical energy of the system, making the swing higher and higher; the swing movement is physically described as parametric self-excited vibration. [0003] The Chinese utility model patent whose notification number is CN203677919U discloses a swing simulation device based on self-exc...

Claims

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Application Information

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IPC IPC(8): G09B23/06G09B5/02
CPCG09B5/02G09B23/06
Inventor 王翠香范琦杨百愚周红兵张海防王伟宇徐翠莲胡坤
Owner AIR FORCE UNIV PLA
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