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Belt transmission characteristic parameter teaching model demonstration instrument

A technology of characteristic parameters and teaching models, applied in teaching models, instruments, educational appliances, etc., can solve the problems of discontinuous increase in load, increase in teaching investment, and inability to observe elastic slippage, so as to improve hands-on and operation ability and improve teaching quality and the effect of efficiency

Inactive Publication Date: 2015-10-21
TAIYUAN UNIV OF TECH
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Problems solved by technology

Its shortcoming is that when the belt drive test bench is directly used for teaching experiment demonstration, although it meets the accuracy requirements of belt drive experiment teaching, the measured data only have the main parameters related to the design of the drive belt, such as input torque, output torque, etc. Torque, input speed, output speed, so as to obtain the slip rate, efficiency, etc., which are quite different from the parameters that need to be understood and mastered in classroom teaching
Among them, since there is no belt tension mechanism, it is impossible to measure the initial tension, tight side tension and loose side tension, so that the effective circumferential force cannot be calculated, and the Euler formula cannot be obtained; At the time, it can only be adjusted by the number of connected resistors (that is, electric lights). Although the image is intuitive, it also leads to the problem of discontinuous increase in load; in the experiment, the pre-tightening force is required to be too large, and the position of the tight side and the loose side cannot be observed. It is impossible to continuously increase the load, pre-tightening force, etc., and it is impossible to observe the phenomenon of elastic slippage
[0004] In addition, the above-mentioned belt drive test bench adopts microcomputer distributed control technology and experimental data processing and management technology, which makes the computer an essential component of the experimental equipment, improves the accuracy of experimental data, and increases teaching investment, especially in the teaching of belt drive. Among them, the teacher can only simply explain the theoretical knowledge, which makes the classroom become a boring speech. When doing experiments, students need to review the content explained by the teacher before the experiment, which greatly lengthens the teaching time of the chapter of belt transmission. The automation level of the experimental bench is high, and the data processed by the computer makes the observed data abstract, and also reduces the students' ability to practice, and the experimental course also loses its due role and effect

Method used

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  • Belt transmission characteristic parameter teaching model demonstration instrument
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  • Belt transmission characteristic parameter teaching model demonstration instrument

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] Implement a teaching and demonstration device for measuring the characteristic parameters of belt transmission, including driving wheels and driven wheels arranged horizontally and symmetrically. The passing wheel and the lower passing wheel of the belt form a belt transmission mechanism, and the angle between the belt when the upper passing wheel and the lower passing wheel position of the belt is 120 °. The driving wheel is fixed on the plexiglass box through the shaft and the bearing, and the power is provided by the frequency conversion speed regulation motor connected to the driving pulley shaft at the rear of the box. This motor adopts frequency conversion speed regulation, which can realize stepless speed change. The driven pulley, the upper belt pulley and the lower pulley are respectively fixed on their r...

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Abstract

The invention relates to a belt transmission characteristic parameter teaching model demonstration instrument, which is characterized in that a driving wheel and a driven wheel are arranged in a horizontally symmetrical mode, a horizontally symmetrical center line of the driving wheel and the driven wheel is provided with a belt upper passing wheel and a belt lower passing wheel, a belt is enabled to form a belt transmission mechanism through the driving wheel, the driven wheel, the belt upper passing wheel and the belt lower passing wheel, and an included angle of the belt at the belt upper passing wheel and the belt lower passing wheel is enabled to be 120 degrees. In addition, the belt transmission characteristic parameter teaching model demonstration instrument is further provided with pressure sensors, speed sensors and display instruments. The belt transmission characteristic parameter teaching model demonstration instrument is visual and convenient, reveals measurement and performance demonstration of various parameters in belt transmission teaching in a simple and easily understood manner, has the characteristics of abilities of being economical, practical and convenient, and is applicable to belt transmission teaching demonstration.

Description

technical field [0001] The invention relates to a belt transmission teaching demonstration device, in particular to a teaching demonstration device for measuring characteristic parameters of teaching belt transmission. Background technique [0002] The belt drive test bench used for teaching at home and abroad is mainly an industrial test bench. This test bench is designed and manufactured by a transmission belt manufacturer, not a classroom teaching demonstrator for belt drive teaching. Domestically, there are mainly DLS-B design belt transmission test benches, etc., which rely on manual operation to adjust the speed load, while the main development direction abroad is computer distributed control type control, which uses digital display panel readings or computer test and analysis software to measure belt slip and transmission efficiency. It realizes the measurement of the slip rate of flat belt and V-belt and the measurement of belt transmission efficiency, and automatica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/02
Inventor 任家骏张明庞荫铭梁满仓武志宏李渊崔天宁李玉
Owner TAIYUAN UNIV OF TECH
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