CN107025838B

CN107025838B - Contour drawing model

Info

Publication number: CN107025838B
Application number: CN201710455291.7A
Authority: CN
Inventors: 卢万合; 曹璐; 徐琪
Original assignee: Jilin Normal University
Current assignee: Jilin Normal University
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2023-12-01
Anticipated expiration: 2037-06-16
Also published as: CN107025838A

Abstract

The application discloses a contour line drawing model which is used for drawing a three-dimensional contour line and a plane contour line and comprises a support, a simulated peak, a circular sliding rail sleeved outside the simulated peak, a movable telescopic drawing pen arranged between the circular sliding rails, a transparent drawing paper and a marking pen, wherein the support comprises a base and a caliper with scales on one side arranged on the base, and a plurality of grooves are longitudinally arranged on one side of the caliper facing the circular sliding rail. The application has simple structure, easy operation and strong practicability, can combine the drawing of the three-dimensional contour line and the plane contour line, and is beneficial to deepening the recognition of the contour line of students.

Description

Contour drawing model

Technical Field

The application belongs to teaching auxiliary tools, and particularly relates to a contour drawing model.

Background

One of the tasks of the geography teaching of middle school is to help students build geospatial thinking, and the learning of contour lines is very helpful for the cultivation of the space thinking of the students. However, the contour lines are difficult to understand, so that teachers often have little effort during explanation, but have little effect, so that the enthusiasm of students to learn is affected, and the working efficiency and the teaching quality of the teachers are reduced to a certain extent.

The prior contour line drawing mostly adopts the following method that firstly, the feature points of the landform are determined, the points with the same height are connected into lines according to the property of the contour line, and then the drawing is completed by comparing the field conditions; or use dedicated software to draw contours. However, these methods are relatively specialized and complex, and are not suitable for demonstration as teaching aids for students. In addition, some existing contour models are only single three-dimensional models, and students have certain difficulty in mutually converting three-dimensional contour lines and two-dimensional plane contour lines. Although some documents describe models for mutually converting three-dimensional contour lines and planar contour lines, the models have the defects of complex general structure, complex operation, difficult understanding and inconvenient popularization and use in teaching.

The drawing teaching aid for the three-dimensional contour lines and the plane contour lines is simple in structure, convenient to use and easy to understand by students.

Disclosure of Invention

The application aims to provide a contour line drawing model which has a simple structure and is simple to operate, and a mountain peak model is used for creating a contour line which is easy for students to understand and is convenient for drawing a three-dimensional contour line and drawing a plane contour line according to the three-dimensional contour line.

In order to solve the technical problems, the application adopts the following technical scheme:

the contour drawing model comprises a support, a simulated peak placed in the support, two annular sliding rails sleeved outside the simulated peak and arranged up and down, a movable telescopic drawing pen arranged between the two annular sliding rails, a transparent drawing paper and a marking pen, wherein the support comprises a base and a caliper with scales on one side arranged on the base, a plurality of grooves are longitudinally arranged on the caliper towards one side of the annular sliding rails, and the annular sliding rails are clamped in the grooves.

The movable telescopic drawing pen consists of a telescopic pen and a roller, wherein the telescopic pen is inserted in the middle of the roller, the pen point faces to a simulated mountain, the roller is of a thick middle thin structure at two ends, an upper clamping groove and a lower clamping groove are formed in the middle thin part of the roller, and two circular sliding rails are clamped in the clamping grooves.

The simulated peak is placed in the center of the bracket.

The beneficial effects of the application are as follows:

the application enables students to understand the drawing process of the three-dimensional contour line and the plane contour line more easily through a simple teaching aid, and grasps the process and principle of converting the three-dimensional contour line into the plane contour line.

The teaching aid breaks through the visual limitation, skillfully combines the three-dimensional space and the two-dimensional plane, and is helpful for deepening the understanding of the contour lines of students.

The teaching aid is simple in structure and easy to operate. Students draw entity contour diagrams in hands, so that understanding of the geographical contour line problem is deepened, and cultivation of geospatial thinking is facilitated.

Drawings

Fig. 1 is a schematic perspective view of a model of the present application.

Fig. 2 is a schematic view of a stent of the model of the present application.

FIG. 3 is a schematic drawing of the model of the present application when drawing a stereoscopic contour.

FIG. 4 is a schematic drawing of the model of the present application when drawing a planar contour.

Fig. 5 is an enlarged schematic view of the connection between the circular slide rail and the movable telescopic drawing pen of the model of the present application.

Description of the reference numerals

1-a bracket; 2-simulating mountain peaks; 3-two circular ring-shaped slide rails arranged up and down; 4-moving a telescopic drawing pen; 5-a transparent drawing sheet; 6, a base; 7-calipers; 8-grooves; 9-a roller; 10-telescoping pen; 11-clamping groove.

Detailed Description

The contour drawing model comprises a support 1, a simulated peak 2 arranged on the support 1, two circular sliding rails 3 sleeved outside the simulated peak 2 and arranged up and down, a movable telescopic drawing pen 4 arranged between the two circular sliding rails, and a transparent drawing paper 5 and a marker pen. The movable telescopic drawing pen 4 consists of a telescopic pen 10 and a roller 9, wherein the telescopic pen 10 is inserted in the middle of the roller 9, the nib faces to a simulated mountain, the roller 9 is of a thick middle thin structure at two ends, clamping grooves 11 are formed in the upper part and the lower part of the middle thin part of the roller, and two circular sliding rails are clamped in the clamping grooves 11. The bracket 1 comprises a base 6 and a caliper 7 with scales on one side arranged on the base 6, wherein a plurality of grooves 8 are longitudinally arranged on the caliper 7 towards one side of the circular sliding rail. The circular slide rail 3 can be clamped in different grooves, and the simulated mountain 2 is arranged in the center of the bracket 1.

In order to further describe the technical means adopted by the application to achieve the expected effect and the expected operation effect thereof, the following detailed description is given according to the specific embodiments, structures, features and effects thereof in conjunction with the following drawings.

As shown in fig. 3, when drawing a three-dimensional contour line, the circular slide rails 3 are moved to a designated height of the caliper 7, clamped in the upper groove 8 and the lower groove 8 of the designated height, a circle of moving telescopic drawing pen is moved in parallel from a certain point in the two circular slide rails 3, the three-dimensional contour line is drawn, and the circular slide rails 3 are sequentially moved upwards, namely, the complete three-dimensional contour line is drawn.

As shown in fig. 4, when drawing a planar contour, the circular slide rail is moved to the upper side of the simulated peak and clamped in the groove 8 of the caliper 7, the transparent drawing paper 5 is clamped in the middle of the circular slide rail 3, the simulated peak 2 model is overlooked, and the planar contour is drawn on the transparent drawing paper 5 by using a marker according to the seen stereoscopic contour.

Claims

1. A teaching aid is drawn to contour, characterized in that: the portable electronic device comprises a support (1), a simulated peak (2) placed in the support (1), two circular slide rails (3) sleeved outside the simulated peak (2) and arranged up and down, and a movable telescopic drawing pen (4) arranged between the two circular slide rails (3), wherein the portable electronic device is additionally provided with a transparent drawing paper (5) and a marking pen, the support (1) comprises a base (6) and a caliper (7) with scales on one side arranged on the base, a plurality of grooves (8) are longitudinally arranged on one side of the caliper (7) facing the circular slide rails, the circular slide rails (3) are clamped in the grooves (8), and the transparent drawing paper is fixed at the upper end of the simulated peak through the two circular slide rails; the movable telescopic drawing pen (4) consists of a telescopic pen (10) and a roller (9), wherein the telescopic pen is inserted in the middle of the roller, a pen point faces to a simulated mountain (2), the roller is of a thick middle-thin structure at two ends, an upper clamping groove and a lower clamping groove (11) are formed in the middle of the roller, and two circular sliding rails (3) are clamped in the clamping grooves.

2. A contour drawing teaching aid as defined in claim 1, wherein: the simulated peak (2) is arranged at the center of the bracket (1).