CN201359796Y

CN201359796Y - Mechanical wave demonstration device

Info

Publication number: CN201359796Y
Application number: CNU2009203006343U
Authority: CN
Inventors: 宋明全
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-16
Filing date: 2009-02-16
Publication date: 2009-12-09
Anticipated expiration: 2019-02-16

Abstract

The utility model discloses a mechanical wave demonstration device which comprises a horizontal base, an equal-height floor stand fixed at two ends of the base vertically and a horizontal crossbeam fixed at two ends of the equal height floor stand, and is characterized in that springs with same coefficient of elasticity and length are hanged downward on the horizontal crossbeam at equal space; the bottom end of each spring is provided with a small ball which is made of same material and has same weight; and all adjacent small balls are connected into a whole by rubber bands which have horizontal equidistance length and are in a flabby state. The mechanical wave demonstration device overcomes the defects that the traditional manual vibration and wave demonstrator can only demonstrate phenomenon, but can not demonstrate the essence of the phenomenon, leads the phenomenon and the essence to be combined together dynamically, not only can demonstrate the phenomenon, but also can show the essence causing the phenomenon, and is beneficial to helping students know the relationship of the vibration and the wave deeply. In addition, the mechanical wave demonstration device also has the obvious advantages of simple structure and easy operation.

Description

A kind of mechanical wave apparatus for demonstrating

Technical field

The utility model relates to a kind of physics teaching apparatus for demonstrating, particularly a kind of mechanical wave apparatus for demonstrating.

Background technology

Now " the oscillation and wave demonstration device " of teaching usefulness all is hand-rail type mechanical hook-ups, can only demonstrative process, and can not make the student understand the essence that mechanical wave produces easily.

Summary of the invention

Goal of the invention of the present utility model is: the problems referred to above that exist at existing hand-rail type machinery apparatus for demonstrating, and for the user provides a kind of simple in structure, processing ease, can show intuitively that mechanical wave produces the mechanical wave apparatus for demonstrating with vibration essence.

Goal of the invention of the present utility model, realize by implementing following technical proposals:

A kind of mechanical wave apparatus for demonstrating, include horizontal base, vertically be fixed on the contour stand at these base two ends and be fixed on horizontal gird in the contour stand in two ends, it is characterized in that: on this horizontal gird, the equally spaced spring that hangs with identical elasticity coefficient and length straight down, the bead identical in quality that same material is made all is equipped with in the bottom of every spring, and the relaxed state bungee by the equidistant length of level fuses each bead adjacent one another are.

A kind of mechanical wave apparatus for demonstrating described in the utility model, the spring that it is described equidistantly to hang on the horizontal gird straight down, the bottom has described bead has 12 at least.

A kind of mechanical wave apparatus for demonstrating described in the utility model, its between top, horizontal crossbeam and base, the middle vertical position of per two adjacent springs, be provided with a slice division board And on division board, with respect to spring bottom bead reach peripheral position up and down, be provided with the notch that the bungee that connects adjacent two beads can pass.

Advantage of the present utility model is: the vertical motion up and down that spurs bead on the spring, by the bungee that is connected with this bead, will affect the bead vertical motion up and down on each spring in regular turn, and the movement locus in regular turn of each bead is promptly demonstrated out the communication form of mechanical wave, thereby helps the deep understanding vibration of student and the relation of ripple.In addition, also have characteristics simple in structure, processing ease.

Description of drawings

Fig. 1 looks synoptic diagram for the master of the utility model mechanical wave apparatus for demonstrating structure.

Mark among the figure: 1 for vertically being fixed on the stand on the base, and 2 is base, and 3 for being fixed on the horizontal gird in the stand, 4 for hanging the spring on horizontal gird from above, 5 for being fixed on the bead on the spring bottom, and 6 for connecting the bungee of adjacent two beads, and 7 for isolating the division board of adjacent two springs.

Embodiment

Below in conjunction with accompanying drawing, the utility model is done detailed explanation.

As shown in Figure 1, the utility model mechanical wave apparatus for demonstrating is by horizontal base 2, vertically be fixed on the contour stand 1 at these base 2 two ends and the horizontal gird 3 that is fixed in the contour stand 1 in two ends constitutes this case device frame; On the horizontal gird 3 of device frame, equally spaced 12 springs that hang identical elasticity coefficient and length from above, the bead 5 identical in quality that same material is made all is housed in the bottom of every spring 4, identical to guarantee each bead 5 in the cycle that vertical direction is done simple harmonic motion, relaxed state bungee 6 by the equidistant length of level fuses each bead 5 adjacent one another are, can affect the bead vibration of back with the bead of surface vibration before guaranteeing.For avoiding the collision between the spring, between top, horizontal crossbeam 3 and base 2, the middle vertical position of per two adjacent springs 4, be provided with a slice division board 7, there is bungee 6 to connect between adjacent two beads for making, on each division board 7, have vertical notch, make bungee 6 pass division board 7 and be connected with the adjacent bead of these division board both sides by notch with respect to the position of spring bottom bead.

When first bead after vertical direction vibrates, affect second bead to vibrate by bungee at vertical direction, second bead affects the 3rd bead vibration by bungee again, and order transfers vibrations to the bead of back according to this, thereby forms mechanical wave.

Claims

1. mechanical wave apparatus for demonstrating, include horizontal base (2), vertically be fixed on the contour stand (1) at this base (2) two ends and be fixed on horizontal gird (3) in the contour stands in two ends (1), it is characterized in that: on this horizontal gird (3), the equally spaced spring (4) that hangs with identical elasticity coefficient and length straight down, the bead (5) identical in quality that same material is made all is equipped with in the bottom of every spring (4), and the relaxed state bungee (6) by the equidistant length of level fuses each bead adjacent one another are.

2. according to the described mechanical wave apparatus for demonstrating of claim 1, it is characterized in that: describedly equidistantly hang over the spring (4) that horizontal gird (3) is gone up, the bottom has described bead (5) straight down, have 12 at least.

3. according to claim 1 or 2 described mechanical wave apparatus for demonstrating, it is characterized in that: between top, horizontal crossbeam (3) and base (2), the middle vertical position of per two adjacent springs (4), be provided with a slice division board (7) And go up at division board (7), with respect to spring (4) bottom bead (5) reach peripheral position up and down, be provided with the notch that the bungee (6) that connects adjacent two beads (5) can pass.