CN213070270U - Simple and easy moment teaching demonstration mechanism - Google Patents

Abstract

A simple moment teaching demonstration mechanism comprises a base, a load rod, a fixed middle shaft, a linear bearing, a positioning middle shaft, a fixed support, weights, rollers, a force measuring rod and a force measuring device; through the size that changes the weight, change the different bellied connections of weight and load pole, change the different bellied connections of ergograph and dynamometry pole, verify the arm of force, power change and the nature of moment change, knowledge and simple structure that this mechanism can audio-visually demonstrate relevant moment, simple to operate, easy operation.

Description

Simple and easy moment teaching demonstration mechanism

Technical Field

The utility model relates to a moment mechanism especially has related to a moment mechanism of simple and easy demonstration.

Background

The moment is the content that many students in principle and engineering class all need to study, and is comparatively abstract, but the teaching aid about moment is less.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple demonstration mechanism with reasonable design and simple structure, considering that the existing teaching aids related to the moment are fewer. Including base, load beam, fixed axis, linear bearing, location axis, fixed bolster, weight, gyro wheel, dynamometer pole, dynamometer, its main characterized in that: the base and the fixed middle shaft are fixedly connected, the left end and the right end of the linear bearing are respectively fixedly connected with the load rod and the force measuring rod through bolts, the linear bearing rotates relative to the fixed middle shaft and the positioning middle shaft, the fixed support is fixedly connected with the base, the roller rotates relative to the fixed support through a pin, the bottom of the load rod and the bottom of the force measuring rod are made into hemispheres which can slide relative to the base, equidistant bulges are arranged on the load rod and the force measuring rod, through holes are arranged at the bulges, weights are connected with the bulges of the load rod through ropes around the roller, and the bulges on the force measuring rod are connected with the force measuring device.

The utility model has the advantages that: the utility model provides a simple and easy moment teaching demonstration mechanism, through the size that changes the weight and the different positions of weight, ergograph, can demonstrate power, arm of force change and the nature of moment change, overall structure is simple, low cost, convenient operation, lets the teaching become directly perceived image, helps the student to understand knowledge better.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

The device comprises a base 1, a load rod 2, a fixed middle shaft 3, a linear bearing 4, a positioning middle shaft 5, a fixed support 6, a weight 7, a roller 8, a force measuring rod 9 and a force measuring device 10.

Detailed Description

As can be seen from fig. 1: the utility model provides a simple and easy moment teaching demonstration mechanism, includes base 1, load bar 2, fixed axis 3, linear bearing 4, location axis 5, fixed bolster 6, weight 7, gyro wheel 8, dynamometer rod 9, ergograph 10, its main characterized in that: base 1 and fixed axis 3 carry out fixed connection, linear bearing 4 is controlled both ends and is passed through bolt fixed connection with load pole 2 and dynamometry pole 9 respectively, linear bearing 4 rotates with fixed axis 3, location axis 5 relatively, fixed bolster 6 carries out fixed connection with base 1, gyro wheel 8 rotates through round pin relatively fixed bolster 6, the hemisphere is made to load pole 2 and dynamometry pole 9 bottom, and base 1 relative slip, there is equidistant arch above load pole 2 and the dynamometry pole 9, and the arch department has the through-hole, weight 7 is connected with the arch of load pole 2 around gyro wheel 8 through the rope, the arch above the dynamometry pole 9 is connected to dynamometer 10.

The utility model discloses during the use weight 7 is connected around the different archs of gyro wheel 8 and load pole 2 through the rope, and different archs above the dynamometry pole 9 are connected to the dynamometry ware 10, when whole static balance, through the size of record weight 7 and the reading of dynamometry ware to and the ratio of both sides interval, verify that moment equals the nature of power multiplication arm of force.

Claims (1)

1. The utility model provides a simple and easy moment teaching demonstration mechanism, includes base (1), load pole (2), fixed axis (3), linear bearing (4), location axis (5), fixed bolster (6), weight (7), gyro wheel (8), dynamometry pole (9), dynamometry ware (10), its main characterized in that: the base (1) is fixedly connected with the fixed middle shaft (3), the left end and the right end of the linear bearing (4) are respectively fixedly connected with the load rod (2) and the force measuring rod (9) through bolts, the linear bearing (4) rotates relative to the fixed middle shaft (3) and the positioning middle shaft (5), the fixed support (6) is fixedly connected with the base (1), the roller (8) rotates relative to the fixed support (6) through a pin, the bottoms of the load rod (2) and the force measuring rod (9) are made into a hemisphere shape, can slide relative to the base (1), the load rod (2) and the force measuring rod (9) are provided with bulges at equal intervals, the bulges are provided with through holes, the weight (7) is connected with the bulge of the load rod (2) by winding the roller (8) through a rope, and the force measuring device (10) is connected with the bulge on the force measuring rod (9).

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