CN203786974U - Secondary school teaching apparatus - Google Patents

Abstract

Provided is a secondary school teaching apparatus mainly composed of a framework, a horizontal supporting leg, a lengthened rail, an operating lever, three arc tracks, two baffle plates, a fixing lever, a rubber strip, a counter weight, iron balls, a small magnet, and a collecting device. The framework comprises a horizontal pedestal and a vertical erect seat. The horizontal supporting leg is composed of a U-shaped groove on a side of the pedestal and a supporting member on the other side of the pedestal. The supporting member is formed by a screw and a screw nut. The level of the pedestal is adjusted by adjusting the screw nut with reference to a counter weight suspended from the erect seat. The fixing lever is vertically fixed to the pedestal and fixed to the pedestals of a second arc track and a third arc track. The operating lever comprises a 60cm-long U-shaped groove installed on the erect seat, three iron lines, and the eraser. The secondary school teaching apparatus is easy to carry and use, prevents residual magnetism of an electromagnet, achieves high production precision, has a function of collecting collided small iron balls, guarantees experiment effects, and improves experiment efficiency.

Description

A kind of middle school teaching device

Technical field

The utility model belongs to a kind of middle school teaching device.

Background technology

Physical Experiment is the important step in physics teaching, is to cultivate students ' creativity and creative effective means, and therefore corresponding physical test device seems particularly important.Existing flat throwing test unit electromagnet, also to attach student power source or with a few joint dry cells, wiring trouble, portably use also inconvenient, with electromagnet, there is remanent magnetism simultaneously, affect experiment effect, after bead collision, can be scattering into outside track, to next step test, cause larger inconvenience, affect test efficiency.

Technology contents

For addressing the above problem, the present application a kind of new middle school teaching device, adopt electromagnet, with mechanically operated method transmitting bead, the while arranges little ball collection arrangement at the long track of level.It has realized and having carried, easy to use, avoided electromagnet remanent magnetism, make precision high, there is the function of little iron ball after the collision of collecting simultaneously, guaranteed experiment effect and improved test efficiency.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

This middle school teaching device mainly comprises: framework 1, horizontal spike, spreading rail 2,3,3 arc tracks 4 of control lever, baffle plate 5.1,5.2,5.3, fixed bar 6, rubber bar 7, weight 8, iron ball 9, small magnet 10, gathering-device 11; Wherein, framework 1 has the base of level and vertical perpendicular seat, and perpendicular seat vertical center is in base; Horizontal spike is by being positioned at the U-shaped groove of base one side and the support member of base opposite side forms, and support member is comprised of screw, nut, by setting nut and with reference to the weight line hanging from above on perpendicular seat, adjusts base level; The 1st arc track 4 docks with spreading rail 2 is contour, and arc track 4 is fixed by center line coincidence method on base, and spreading rail 2 is as the flat horizontal rail leaving after lower of iron ball, and spreading rail 2 is comprised of the U-shaped groove of long 45cm; 2nd, at perpendicular seat 18cm and 40cm At The Height, level fixes the 2nd to the 3rd arc track 4 respectively, the base and the 2nd of the 3rd arc track 4 is, the center line of the base of the 3rd arc track 4 is aligned in the vertically center line of perpendicular seat, and the 2nd, the base and the 2nd of the 3rd arc track 4, the 3rd arc track 4 be fixedly connected with; 3 baffle plates 5.1,5.2,5.3 are fixed by center line coincidence method at above-mentioned 3 arc tracks 4 1cm places, upper end respectively; Fixed bar 6 is vertically fixing on base, and with the 2nd, the base of the 3rd arc track 4 fixes, to guarantee that base and perpendicular seat form a stable vertical frame 1; Control lever 3 is included in U-shaped groove, 3 iron wires and the 1 rubber bar 7 that the upper length of installing of perpendicular seat is 60cm, the side of the long U-shaped groove for 60cm arranges 3 pairs of apertures, the position in hole lays respectively at 1.5cm place, 3 baffle plate tops, 3 iron wires pass from aperture, along the bending of perpendicular seat, arrive baffle plate top, be connected with small magnet 10, fixing again, long with L-type holder, fix for the U-shaped groove of 60cm, in case U-shaped groove is de-outward while pulling, in U-shaped groove middle and lower part, with 1 rubber bar 7 one end, through L-type holder, the other end hooks mutually and now makes rubber bar 7 natural relaxations with iron wire; Gathering-device 11 is positioned on contrary one end, one end that spreading rail 2 joins with the 1st arc track 4.

By said apparatus, efficiently solve wiring trouble that the subsidiary student power source of existing flat throwing test unit or battery cause, portably use inconvenience, electromagnet remanent magnetism affects experiment effect, can be scattering into the technical matters that track brings inconvenience to next step test and affects test efficiency after bead collision outward.

Concrete method for making is exemplified below:

(1) make main material: hollow aluminium is about 70cm, wide 8cm, thick 2.5cm, does the end and sits; Hollow aluminium is about 60cm, wide 5cm, and thick 2.5cm, does perpendicular seat; Hollow aluminium is about 20cm, wide 3.5cm, and thick 2.5cm,, does rail bed by two sections; 3 length, the aluminium arc track 4 that radian is the same; With 2 of the wide U-shaped grooves of arc track 4,1 is about 45cm, and another 1 is about 60cm; 3 circular small magnets; 2 little iron balls; 1, weight line; 1 of fixed bar.Rivet is some; 1 of rubber bar; Nut, screw are some.

(2) make main method:

Make framework: base, perpendicular seat are drawn to center line, and two center line alignment fix with two rivets, make perpendicular seat vertical center ten bases.

Production technique spike: be about the U-shaped groove of 18cm on 1, chassis left side pad, boring screw and base fix, and base opposite side is made the strong point with screw-nut, hangs adjusting base level from above on setting nut and perpendicular seat.

Arc track 4 in mounting seat and spreading rail 2: on base, press fixedly arc track 4 of center line coincidence method, the U-shaped groove that padded length is 45cm, make it to connect with track export and contour, to directly.

Attachment rail base and arc track 4: at perpendicular seat 18cm and 40cm At The Height, with rivet, two rail bed levels are fixed respectively and center line is aligned in vertical center line, make it orthogonal, then in two rail bed, press center line coincidence method respectively, fix two arc tracks 4.

Baffle plate is installed: at 3 arc tracks, 4 1cm places, upper end, by center line coincidence method, fix 3 identical 3 baffle plates 5.1,5.2,5.3 respectively.

Fixed bar is installed: on base, vertically fix 1 aluminium fixed bar 6, and with another 2 rail bed tightly mutually by fixing, to guarantee stable vertical frame of base and perpendicular seat formation.

Fitting operation bar 3: loading onto length on perpendicular seat is the U-shaped groove of 60cm, and at 3 pairs of apertures of groove side face drilling, the position in hole lays respectively at the 1.5cm place, top of 3 baffle plates, from aperture, pass 3 iron wires, along the bending of perpendicular seat, to baffle plate top, be connected with small magnet 10, then fix iron wire with holder.U-shaped groove is fixed with L-type holder, in case U-shaped groove is de-outward while pulling.In U-shaped groove middle and lower part, with 1 rubber bar 7 one end, through L-type holder, the other end hooks (this iron wire other end hook and in groove, pass below the iron wire of aperture on) mutually with iron wire, now make rubber bar 7 natural relaxations.Whole device is control lever 3.

Gathering-device is installed: gathering-device 11 is positioned on contrary one end, one end that spreading rail 2 joins with the 1st arc track 4.

(3) producing principle

With electromagnet, use 1 control lever 3 caring for 3 small magnets 10, when making small magnet 10, a press operation bar 3 rises, and the iron ball 9 of inhaling under baffle plate is lived by baffle plate shelves, and by static beginning, suitable track separately whereabouts motion is simultaneously got up.Rubber bar 7 shrinks, and small magnet 10 is again by the original place of rebounding, and adjacent baffle plate, waits for next experimental implementation.

(4) using method:

Nut under first adjusting base, makes weight line overlap with perpendicular seat center line, base level.

Two little iron balls 9 are inhaled respectively on baffle plate 5.1,5.2 times, and press operation bar 3, two small magnets 10 rise simultaneously, and simultaneously by the little iron ball 9 of static release two, little iron ball 9 falls along track separately, in base spreading rail 2 somewheres, collides.Control lever 3, owing to being subject to 7 deformation of rubber bar, shrinks the original place of rebounding, and makes small magnet 10 adjacent on baffle plate again.

Again two little iron balls 9 are inhaled respectively on baffle plate 5.1, baffle plate 5.3 times, the same operation, two little iron balls 9 again straight rail road are collided in base spreading rail 2 somewheres, can verify thus flat characteristic of throwing.

Claims (1)

1. a middle school teaching device, this middle school teaching device mainly comprises: framework (1), horizontal spike, spreading rail (2), control lever (3), the 1st, the 2nd, the 3rd arc track (4), 3 baffle plates (5.1,5.2,5.3), fixed bar (6), rubber bar (7), weight (8), iron ball (9), small magnet (10), gathering-device (11); Wherein, framework (1) has the base of level and vertical perpendicular seat, and perpendicular seat vertical center is in base; Horizontal spike is by being positioned at the U-shaped groove of base one side and the support member of base opposite side forms, and support member is comprised of screw, nut, by setting nut and with reference to the weight line hanging from above on perpendicular seat, adjusts base level; The 1st arc track (4) and contour docking of spreading rail (2), the 1st arc track (4) is fixed by center line coincidence method on base, spreading rail (2) is as the flat horizontal rail leaving after lower of iron ball (9), and spreading rail (2) is comprised of the U-shaped groove of long 45cm; 2nd, the 3rd arc track (4) perpendicular seat 18cm and 40cm At The Height respectively level fix the base and the 2nd of the 2nd, the 3rd arc track (4), the center line of the base of the 3rd arc track (4) is aligned in the center line of vertical perpendicular seat, the base of the 2nd, the 3rd arc track (4) and the 2nd, the 3rd arc track (4) are fixedly connected with; 3 baffle plates (5.1,5.2,5.3) are respectively at 1cm place, above-mentioned 3 arc tracks (4) upper end and fix by center line coincidence method; Fixed bar (6) is vertical on base to be fixed and fixes with the base of the 2nd, the 3rd arc track (4), to guarantee that base and perpendicular seat form a stable vertical framework (1); Control lever (3) is included in a U-shaped groove that the upper length of installing of perpendicular seat is 60cm, 3 iron wires and 1 rubber bar (7), the side of the long U-shaped groove for 60cm arranges 3 pairs of apertures, the position in described hole lays respectively at 1.5cm place, 3 baffle plate tops, 3 iron wires pass from aperture, along the bending of perpendicular seat, to baffle plate top, be connected with small magnet (10), fixing again, long with L-type holder, fix for the U-shaped groove of 60cm, in case U-shaped groove is de-outward while pulling, in U-shaped groove middle and lower part, with 1 rubber bar (7) one end, through L-type holder, the other end hooks and makes rubber bar (7) natural relaxation mutually with iron wire; Gathering-device (11) is positioned on contrary one end, one end that spreading rail (2) joins with the 1st arc track (4).