CN2110902U

CN2110902U - Multifunctional demonstration gun

Info

Publication number: CN2110902U
Application number: CN 92213221
Authority: CN
Inventors: 吴国勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-02-13
Filing date: 1992-02-13
Publication date: 1992-07-22

Abstract

The utility model relates to a multifunctional demonstration gun which can demonstrate aclinic parabolic motion and slanting parabolic motion to measure initial velocity. A guide shaft is pulled out a little by pulling a screw cap, a ball is placed at a muzzle, a bearing rod passes through a round hole and is sheathed with the other ball to make a gun beam horizontal, a gun hook is hooked, and the ball at the muzzle is impinged by the guide shaft to make the aclinic parabolic motion; simultaneously, a touch sheet strikes a transmission rod to make the other ball disengaged from the bearing rod so as to make freely falling body motion; as a result the two balls collide with each other in the air to demonstrate the slanting parabolic motion. The height of the muzzle is as high as a horizontal tabletop, a ball is launched, when a throw angle reaches 45 DEG, the range is largest, and then the initial velocity is measured; the gun beam is placed vertically, a ball is launched, the climbing height H of the ball is measured out, and the velocity can be calculated by the formula v-[0]=____ when the ball leaves the muzzle.

Description

Multifunctional demonstration gun

The utility model relates to the invention of the instruments used for education of middle school class demonstration experiment and student experiment in group use.

At present, in middle school physical experiment, also there are not the relation of demonstrating level throw motion rule, inclined throw movements vibrating deflection and range and the experimental apparatus of survey initial velocity.The purpose of this utility model is to provide a kind of multi-functional demonstration rifle, can demonstrate the relation of the vibrating deflection and the range of inclined throw movements, and the initial velocity in the time of measuring object again and dish out can also not electricity consumption, convenient, the rule of demonstrating level throw motion legibly.

Solution of the present utility model is: spring gun, spirit-leveling instrument, location-plate, baffle plate etc. are housed on the rifle beam, between rifle beam and the spring gun drive link is arranged, drive link one end has pole, and pole can be hung a ball, and spring gun is colluded etc. by shell, gun barrel, guide shaft, spring, rifle to be formed.Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is this utility member stereographic map.

Fig. 2 is the utility model assembling section.

The numeral of marking is expressed as follows respectively among the figure:

1, rifle beam 2, spirit-leveling instrument 3, gun platform 4, gun stock 5, ring screw 6, spirit-leveling instrument 7, location-plate 8, circular hole 9 circular holes 10, baffle plate 11, drive link 12, pole 13, ball 14, circular hole 15, ball 16 muzzle 17, gun barrel 18, spring gun 19, the small of the stock 20, circular hole 21, breach 22, steady plate 23, circular hole 24, spring 25, nut 26, guide shaft 27, cam 28, nut 29, bump sheet 30, spring pin 31, spring 32, spring arm 33, rifle colludes 34, rifle valve 35, rifle valve support

Rifle beam 1 of the present utility model is that the cross section is the rectangular parallelepiped of rectangle, the spirit-leveling instrument 2 that vertical placement is arranged in the middle of the upside of rifle beam 1 (or rear side), pincers have the spirit-leveling instrument 6 of horizontal placement in the middle of preceding (or back) side, rifle beam 1 downside is with graduation apparatus, rifle beam 1 right-hand member is a gun stock 4, the gun platform 3 of being wider than rifle beam 1 is arranged on the left side of gun stock 4, ring screw 5 is equipped with on the right of gun platform 3 downsides, the left end of rifle beam 1 downside has baffle plate 10, on the right of baffle plate 10 location-plate 7 is housed, baffle plate 10 is parallel to location-plate 7, circular hole 8 on having on the location-plate 7, following circular hole 9, big and two circle hole centrelines such as the circular hole of circular hole 8 and ring screw 5 and are parallel to rifle beam 1 on same axis.By the cross section is that round thin steel axle constitutes drive link 11, one end of drive link 11 is connected with pole 12, pole 12 is parallel to drive link 11, earlier drive link 11 is passed circular hole 8 and ring screw 5, refill overhead gage 10, after pole 12 is passed circular hole 9, circular hole 14 on the ball 13 just in time can be enclosed within on the pole 12, gun barrel 17 is arranged in the spring gun 18, and gun barrel 17 left side internal diameters are bigger than the right internal diameter, and the left end of gun barrel 17 is that the bigger pipe of internal diameter is a muzzle 16.Ball 15 just is placed on muzzle 16 places, gun barrel 17 right-hand member downsides are clipped one and are formed breach 21, it is the small of the stock 19 that the downside of spring gun 18 is connected with mini diameter tube, the spring gun upside is connected with two steady plates 22, separation spring gun 18 both sides, four circular holes 23 that symmetry is arranged on steady plate 22, pass the downside that circular hole 23 is fixed on spring gun 18 gun platform 3 with wood screw, be positioned at gun barrel 17 bottoms in the middle of the spring gun 18 two circular holes 20 are arranged, divide apart from both sides, spring gun 18 front and back, drive link 11 is positioned on rifle beam 1 time and the gun barrel 17, cylindrical guide shaft 26 is arranged in the gun barrel 17, the center of ball 13 and ball 15 and guide shaft 26, the long axis of gun barrel 17 is on same straight line, and be parallel to rifle beam 1, guide shaft 26 left ends are screws, is furnished with nut 25, spring 24 is enclosed within on the guide shaft 26, on nut 25 bolts, spring 25 can only be on the left side in the gun barrel 17, the right of guide shaft 26 has truncated cone-shaped cam 27(to have two or three, so that regulate), nut 28 just in time can the right-hand member screw of precession guide shaft 26 on, nut 28 external diameters are greater than gun barrel 17 external diameters, making that guide shaft 26 is sliding to be gone left, is to bump sheet 29 at the right-hand member of nut 28, and the plane parallel of bumping sheet 29 is in guide shaft 26, it is spring pin 30 that two terminations of spring 31 constitute rectangle, pull out the centre of spring 31, constitutes spring arm 32, and spring arm 32 is enclosed within on the rifle valve 34, spring 31 is placed in the rifle valve support 35, rifle valve support 35 is placed on circular hole 20 places of spring gun 18, passes circular hole 20 respectively with screw, circular hole on the rifle valve support 35 and spring 31 are fixed with nut again.Spring pin 30 is close in the middle of gun barrel 17 downsides, rifle valve 34 on the guide shaft 26 that is pressed in breach 21 places under the effect of spring arm 32, rifle collude 33 with rifle valve 34 and rifle valve support 35 be an integral body, rifle colludes 33 and becomes 90 ° approximately with rifle valve 34, rifle colludes 33 circular hole 20 times, and stretches out outside spring 18 downsides.

Rifle beam 1 of the present utility model is preferably wooden, and spirit-leveling

instrument

2 and 6 is glass tubes of sealing colored liquid, and other parts are irony.All parts also can be enough to satisfy the appropriate materials of functional requirement with other, and also available other of all parts is enough to satisfy the suitable shape of functional requirement.

Demonstration of the present utility model is achieved in that

The first, the demonstrating level throw motion rule:

Draw nut 29 earlier, make certain cam 27 on the guide shaft 26 outside breach 21, spring 24 was compressed the very big elastic force of the generation axle 26 of deriving and advanced gun barrel 17 this moment, but rifle valve 34 is on the guide shaft 26 of pressing to breach 21 places under the effect of spring arm 32, cam 27 is obstructed and makes guide shaft 26 motionless, ball 15 is put into muzzle 16 places, pole 12 is passed circular hole 9, ball 13 is enclosed within on the pole 12 again, bumps sheet 29 this moment and equal the distance that nut 25 arrives ball 15 to the distance of drive link 11 right-hand members, left hand is held rifle beam 1 suitable location (spirit-leveling instrument 2 the right), gun stock 4 upper abdomen (or on vertical plane of fixed object) that clings to the body, the right hand is held the small of the stock 19 and rifle colludes 33, and left hand is regulated rifle beam 1, and the bubble in the spirit-leveling instrument 2 is being hit exactly, at this moment, the major axis center line of ball 13 and ball 15 centers and guide shaft 26 is on same horizontal line, and the female sensing of the right hand small of the stock 19 directions are colluded rifle and colluded 33, make rifle valve 34 leave breach 21, guide shaft 26 moves to gun barrel 17 left sides immediately, guide shaft 26 left ends are percussion ball 15 with sudden force, makes ball 15 break away from muzzle 16, makes level throw motion.At this simultaneously, bump the right-hand member that sheet 29 clashes into drive link 11 with sudden force, pole 12 is moved to the left rapidly, ball 13 breaks away from pole 12, do the movement of falling object, ball 13 and ball 15 aloft bump against for a moment simultaneously from the contour movement of falling object and the level throw motion done like this, send " " sound, thereby verified that level throw motion can regard the linear uniform motion of horizontal direction and the resultant motion that vertical direction is done the movement of falling object (drive link 11 move to baffle plate 10 be obstructed make it not break away from rifle beam 1) as.

The second, the vibrating deflection of demonstration inclined throw movements and the relation of range:

Contour muzzle 16 and horizontal table top, allow rifle beam 1 become different angles (in same perpendicular) respectively with surface level, emission ball 15 is write down fall on the table diverse location of ball 15.Experiment shows, when vibrating deflection is 45 °, and the range maximum.

The 3rd, survey initial velocity: allow gun stock 4 land, make that bubble is in the center in the spirit-leveling instrument 6, this moment, rifle beam 1 was vertical, upwards launched ball 15 with above-mentioned similar approach, observed and measure the height H that ball 15 rises, and the speed when establishing ball 15 disengaging muzzle 16 is V ₀, by vertical upthrow equation of motion V ₀= Obtain initial velocity.(g is an acceleration of gravity)

The utility model has the advantage of that the lecture experiment content is many, except above-mentioned three lecture experiments, but measuring height etc. also. And not electricity consumption, simple in structure, easy to operate, demonstration understands, and is effective, is student experimenting in the middle school physical curriculum and the indispensable instrument of classroom lecture experiment.

Claims

1, multi-functional demonstration rifle is by rifle beam 1, drive link 11, spring gun 18 compositions such as grade, of the present utility model being characterised in that: there is gun platform 3 on the right of rifle beam 1, the steady plate 22 of spring gun 18 installs to gun platform 3 places, the left end of rifle beam 1 has baffle plate 10, the right of baffle plate 10 is a location-plate 7, circular hole 8 and circular hole 9 are arranged on the location-plate 7, the left end of drive link 11 is connected with pole 12, and be parallel to each other, drive link 11 is through on circular hole 8 and the ring screw 5, and pole 12 is through on the circular hole 9, the circular hole 14 of ball 13 can be enclosed within on the pole 12, ball 13 is suspended in the air, is gun barrel 17 in the middle of the spring gun 18, and gun barrel 17 left side internal diameters are bigger than the right internal diameter, gun barrel 17 left ends are muzzle 16, ball 15 just in time can be put muzzle 16 places into, and gun barrel 17 right-hand member downsides are clipped one and become breach 21, and guide shaft 26 is arranged in the gun barrel 17.

2, multi-functional demonstration rifle according to claim 1 is characterized in that: the left end of guide shaft 26 is screws, spring 24 is penetrated from guide shaft 26 left ends, with nut 25 precessions, stop spring 24 to be deviate from, the right of guide shaft 26 is a truncated cone-shaped cam 27, guide shaft 26 right-hand members are screws, are furnished with nut 28, and the other end of nut 28 is to bump sheet 29.

3, multi-functional demonstration rifle according to claim 1 is characterized in that: rifle valve support 35 is housed in the circular hole 20 of spring gun 18, spring 31 is contained between the two rifle valve supports 35, spring arm 32 is enclosed within on the rifle valve 34, spring pin 30 is pressed in gun barrel 17 downside centre positions, rifle valve 34 is pressed on the guide shaft 26 at breach 21 places under spring arm 32 effects, rifle colludes 33 and stretches out outside the spring gun 18, and is corresponding with the small of the stock 19.