Detailed Product Description

1.        Main technical specification parameter

1)       The distance between up and down two orbit is 95mm;

2)       Up orbit of orbital length is 90mm, down orbit is 870mm, experiment dolly may move distance 680mm;

3)       The quality of experiment dolly is 200g, there are six weight hole in dolly, weight hole diameter is φ28mm, depth is 16mm.

4)       The quality of weight barrel is 6g;

5)       Shape dimension: Length is 970mm, high is 230mm, width is 150mm.

2.        Construction (see figure1)

Main component:

1)        Dolly: Count two dolly, both of the same quality, there are fix six weight barrel of weight in dolly;

2)        Orbit: Up and down parallel connected on device;

3)        Wall board: There have fixed operating rod on wall board and so on.

4)        Bottom pedestal rack: Contain horizontal and vertical adjustment structure, which fixed on down orbit. (Note: Bottom pedestal rack dont fixed, installation will see figure 2.).

5)        Weight barrel: Respectively two and dolly with hang-hook linker;

6)        Trip rounddown device: may have dolly park in orbital arbitrarily place, which have trip device (to fixed on wall board).

3.        Characteristic:

1)       The device adopt 2mm metal wall board link, the products structure strong, property have stable reliability.

2)       Adjustment in convenience: will be only needs adjust two screw nail on bottom pedestal board in use, may have adjust instrument proceeded level or vertical position.

4.        Use method:

1)        Ready before experiment

a)        Should be put instrument in definite high experiment work stage, have weight can freely move up and down, which have no happen collision phenomenon, two adjustment screw nail on bottom pedestal board should level support work stage, another end of dolly should put in one side edge of experiment stage.

b)       To be adjust level, we adjust by two adjustment screw nail, to observe level have orbit of dolly plane horizontal, for ensure dolly has not slope.

2)        Experiment steps

a)       To put respectively two dollies in origination place, its mark line is aim at same scale, pull line of dolly ahead hang weight barrel. By adjust two adjustment screw nail to adjust dolly gradient which balance its friction force.

b)       To press trip rod, simultaneously two dolly movement, may see to two dollies up and down basically have same position under invariableness pull force.

c)       Will put dolly in origination place; respectively increase and decrease weight in barrel. That is, change size of pull force, press down trip rod, may see is subjected to dolly drift of big force more than is subjected to dolly drift of a little pull force.

d)       Will put dolly in origination place, when same quality of weight barrel, to increase weight on a dolly to increase its quality, press trip rod, may see to dolly drift of a little quality is more than dolly of big quality.

We pass through above experiment, may have reach a conclusion as below:

Under external force effect, because of two dolly simultaneously start and stop at same time, its same movable time, as S=1/2at² is, the ratio of acceleration of A dolly to acceleration of B dolly is equaled the ratio of drift A to drift B, change external force and quality of dolly, from relation of drift specific value, external force specific value and quality specific value, may reach a conclusion that the acceleration of dolly varies with external force, and varies inversely at quality of dolly.

5.        Safeguard and maintenance:

1)       Trip device and guide rail position leave the factory have adjusted in good work state. So screw nail should not undo in case drift.

2)       Wheel axle and poppethead have laid up after use in a little lubricant against erosion, in case affect motion which produce damp when experiment.

3)        

4)       When cartwheel and pulley twist arent nimble, may pass through undo one side of hexagonal nut, adjust size of clearance between support hole and wheel axle.

5)       Pulley rack position adjusted: may appropriate undo pulley rack to fixed wing nut, adjust to pull line of dolly and parallel orbit.

6)       The device should handle with care, in case cause two guide rails out of shape shift, thereby affect experiment effect.

Note: When adjust must be take note never made guide rod tilt on lift and right.