CN203631014U

CN203631014U - Curved surface demonstrator used for teaching advanced mathematics

Info

Publication number: CN203631014U
Application number: CN201320732182.2U
Authority: CN
Inventors: 陈忠
Original assignee: Heilongjiang Agricultural Engineering Vocational College
Current assignee: Heilongjiang Agricultural Engineering Vocational College
Priority date: 2013-11-19
Filing date: 2013-11-19
Publication date: 2014-06-04
Anticipated expiration: 2023-11-19

Abstract

The utility model relates to a curved surface demonstrator used for teaching advanced mathematics, belonging to the field of teaching aids, and solving the problem that the present art lacks a proper teaching aid which enables students to understand the curved surface visually. A column is fixed in the center of a circular base plate, a circular top plate is fixed to the column, a cross bar is fixed at the top end of the column, connecting rods are respectively fixed at the two ends of the cross bar, and the low ends of the connecting rods are horizontally fixed to an annular plate; an annular slideway is formed in the side surface of the circular base plate, a pulley is embedded into the annular slideway, a motor is fixed to the pulley, and a gear is fixed to an output shaft of the motor; an annular tooth bar is fixed at the side surface of the circular base plate; the tail portion of the motor is fixedly provided with a copper wire; and the upper end of the copper wire extends upward to penetrate through an annular gap. The curved surface demonstrator is novel in the form, convenient to use, and good in the demonstration effect.

Description

Higher Mathematics Teaching curved surface demonstration device

Technical field

The utility model belongs to realia field, is specifically related to a kind of demonstration device of using for Higher Mathematics Teaching.

Background technology

In higher mathematics, curved surface is the knowledge point of outbalance, is also the theoretical foundation of studying the branches such as infinitesimal geometry in depth, but it has again comparatively abstract and feature that beyond one's depth simultaneously.If student's Space Imagination power a little less than, can affect to a certain extent study schedule.Teacher, in teaching process, also can update teaching method, so that student can better understand curved surface.But, still do not have more suitable teaching aid can make student can be familiar with intuitively curved surface at present.

Summary of the invention

The purpose of this utility model is not have more suitable teaching aid can make student can be familiar with intuitively the problem of curved surface at present in order to solve, and a kind of higher mathematics curved surface demonstration device is provided.

This Higher Mathematics Teaching comprises circular bottom plate with curved surface demonstration device, and the center of circular bottom plate is fixed with column, and the upper level of column is fixed with circular top plate, being centered close on column of circular top plate; The top of column is fixed with cross bar, and the two ends of cross bar are vertically fixed with connecting link, and the lower end level of two connecting links is fixed with annular slab, and annular slab and circular top plate are positioned at same plane and leave annular space between the two; The top of circular bottom plate side has annular slide track, and annular slide track is embedded with pulley, is fixed with motor on pulley, and the output shaft of motor straight down, and is fixed with gear on output shaft; The bottom of circular bottom plate side is fixed with annular rack, and annular rack engages with gear; The afterbody of described motor is fixed with copper cash; The upper end of copper cash is upward through annular space.

The utlity model has following beneficial effect:

This Higher Mathematics Teaching is the bus that can produce curved surface with the copper cash of curved surface demonstration device, copper cash quality is softer, in presentation process, teacher can be according to teaching needs, curved corresponding shape, then open motor, copper cash is under the drive of motor, return multiple circular motion, in the process of motion, the track that copper cash moves continuously in space is curved surface, like this, teacher explains in conjunction with demonstration device, and student just can observe the form of curved surface intuitively, and then understanding that can be quicker and deep to having of the content of courses.Meanwhile, this curved surface demonstration device can enrich teacher's instructional mode, has strengthened student's learning interest.The utility model can be demonstrated out by curved surface visually, has advantages of novel form, easy to use, good demonstration effect.

Accompanying drawing explanation

Fig. 1 is front view of the present utility model.

1-circular bottom plate; 2-column; 3-circular top plate; 4-cross bar; 5-connecting link; 6-annular slab; 7-annular space; 8-annular slide track; 9-motor; 10-gear; 11-annular rack; 12-copper cash.

Embodiment

Below in conjunction with Fig. 1, the utility model is described further:

This Higher Mathematics Teaching comprises circular bottom plate 1 with curved surface demonstration device, the center of circular bottom plate 1 is fixed with column 2, the upper level of column 2 is fixed with circular top plate 3, between circular top plate 3 and circular bottom plate 1, leaves certain space, generates the space of curved surface for bus.Being centered close on column 2 of circular top plate 3.The top of column 2 is fixed with cross bar 4, and the lower end level that the two ends of cross bar 4 are vertically fixed with 5, two connecting links 5 of connecting link is fixed with annular slab 6, and annular slab 6 is positioned at same plane and leaves annular space 7 between the two with circular top plate 3; The top of circular bottom plate 1 side has annular slide track 8, be annular slide track 8 circular bottom plate 1 one weeks, be embedded with pulley around annular slide track 8, pulley can be along sliding around annular slide track 8, on pulley, be fixed with motor 9, motor 9 can be reducing motor, and in the time adopting reducing motor, it should be connected with power supply by relay; The output shaft of motor 9 straight down, and is fixed with gear 10 on output shaft; The bottom of circular bottom plate 1 side is fixed with annular rack 11, and annular rack 11 is around circular bottom plate 1 one weeks and end to end, and annular rack 11 engages with gear 10, adopt said structure, after motor 9 starts, under the effect of gear 10 and annular rack 11, motor 9 can move along annular slide track 8.The afterbody of described motor 9 is fixed with copper cash 12, adopts said structure, and copper cash 12 is the bus that can produce curved surface, and copper cash 12 quality are softer, and in presentation process, teacher can, according to teaching needs, be curved corresponding shape.The upper end of copper cash 12 is upward through annular space 7, adopts said structure, and annular space 7 can play spacing effect to the upper end of copper cash 12, can limit the circular motion that the upper end of copper cash 12 is done to synchronize with motor 9, prevents that copper cash 12 is to other direction inclination.The top of copper cash 12 should exceed the distance that circular top plate 3 is certain, and object is in order to make copper cash 12 after being bent, can to have enough length.

Curved surface demonstration device in use, first copper cash 12 is bent to the shape needing, then open motor 9, copper cash 12, under the drive of motor 9, returns multiple circular motion, in the process of motion, the track that copper cash 12 moves continuously in space is curved surface, and like this, teacher explains in conjunction with demonstration device, student just can observe the form of curved surface intuitively, and then understanding that can be quicker and deep to having of the content of courses.Meanwhile, this curved surface demonstration device can enrich teacher's instructional mode, has strengthened student's learning interest.This utility model can be demonstrated out by curved surface visually, has advantages of novel form, easy to use, good demonstration effect.

Claims

1. Higher Mathematics Teaching curved surface demonstration device, comprise circular bottom plate (1), it is characterized in that: the center of circular bottom plate (1) is fixed with column (2), the upper level of column (2) is fixed with circular top plate (3), being centered close on column (2) of circular top plate (3); The top of column (2) is fixed with cross bar (4), the two ends of cross bar (4) are vertically fixed with connecting link (5), the lower end level of two connecting links (5) is fixed with annular slab (6), and annular slab (6) is positioned at same plane and leaves annular space (7) between the two with circular top plate (3); The top of circular bottom plate (1) side has annular slide track (8), annular slide track (8) is embedded with pulley, on pulley, be fixed with motor (9), the output shaft of motor (9) straight down, and is fixed with gear (10) on output shaft; The bottom of circular bottom plate (1) side is fixed with annular rack (11), and annular rack (11) engages with gear (10); The afterbody of described motor (9) is fixed with copper cash (12); The upper end of copper cash (12) is upward through annular space (7).