CN206900044U - A kind of special drawing teaching aid of Multifunction mapping teaching - Google Patents

Abstract

The utility model discloses a special drawing teaching aid for multi-functional surveying and mapping teaching, which comprises a main ruler, a fixed ruler and a curved ruler hinged together. One end of the coaxial hinge is provided with an angle gauge, and both the main scale and the fixed scale are provided with scales. The curved ruler is composed of a curved ruler and a straightedge. The straightedge and the curved ruler are slidably connected through the first sliding device. The principle of the sliding device is the same as that of the second sliding device. The drawing pole includes a fixed end of the drawing pole connected telescopically and a telescoping end of the drawing pole, and the ruler includes a fixed end of the straightedge connected telescopically and a straightedge telescopic rod. The drawing tool of the utility model can draw conventional graphics, and can also draw parallel, tangent or intersecting curves, and parameters such as length, angle, and radius can be adjusted according to needs, and the types of drawn curves are rich and accurate, which can significantly improve classroom efficiency.

Description

A special drawing teaching aid for multifunctional surveying and mapping teaching

technical field

The utility model belongs to a drawing tool for teaching, in particular to a special drawing teaching aid for multifunctional surveying and mapping teaching.

Background technique

The drawing function of traditional teaching drawing tools is relatively simple. When making drawings, various tools such as rulers, compasses, triangle rulers, and protractors are required to be used together. The operation is inconvenient, the tools are complicated, time-wasting, and the classroom efficiency is low. At present, there are drawing tools that combine the shapes of triangles, circles, and arcs to prepare a multi-functional integrated structure drawing ruler, but the drawing effect is relatively limited, and it can only be drawn by experience, and the curve cannot be drawn accurately. The utility model provides a special drawing teaching aid for multi-functional surveying and mapping teaching which can accurately draw various curves. It can adjust parameters such as length, angle and radius according to needs, and draw parallel, intersecting and tangent curves. It is easy to operate and can significantly improve classroom efficiency.

Utility model content

The purpose of this utility model is to provide a multi-functional surveying and mapping teaching special drawing teaching aid that can accurately draw various curves. It can adjust parameters such as length, angle and radius according to needs, and draw parallel, intersecting and tangent curves. Improve classroom efficiency.

The utility model is realized through the following technical solutions: a special drawing teaching aid for multifunctional surveying and mapping teaching, which includes a main ruler, a fixed ruler, and a curved ruler. One end of the main ruler is hinged with one end of the fixed ruler and the curved ruler. The main ruler, The fixed ruler and the curved ruler are coaxially hinged; the end of the fixed ruler and the main ruler coaxially hinged is provided with an angle gauge; the end of the main ruler and the fixed ruler coaxially hinged is engraved with a central axis, which serves as a pointer line for indicating functions; Both the main ruler and the fixed ruler are provided with length scales.

The curved ruler is mainly composed of a curved ruler and a straightedge, the straightedge has a length scale, and the curved ruler and the straightedge are slidably connected by a first sliding device.

In order to better realize the utility model, further, the first sliding device can be designed to include a first sliding block arranged on the arc-shaped ruler, the first sliding block is provided with fixing bolts, and the ruler and the arc-shaped ruler The first slider on the hinge. The length of the first sliding block on the curved ruler is greater than the width of the curved ruler, the first sliding block on the curved ruler slides on the periphery of the curved ruler, and the first sliding block can be fixed by fixing bolts.

The first sliding device of the curved ruler and the straightedge can also be designed to include a gear groove in the curved ruler and a first sliding square block provided with a gear-shaped elastic sheet snapped with the gear groove, and the straightedge and the first sliding The squares are hinged, and a chute is arranged in the middle of the arc ruler. The length of the first sliding square is less than the width of the arc ruler, and the elastic sheet of the first sliding square can slide flexibly in the chute of the arc ruler. The slot is snapped into place.

The ruler may be mainly composed of a plurality of segmented rulers, which are hinged sequentially. When using it, you can specify any hinge of the segment ruler as the center of the circle, and draw a circle with the length of the segment ruler at the end far away from the hinge as the radius.

Described straightedge can be designed as that drawing pole is arranged on the straightedge, straightedge and drawing pole are slidably connected through the second sliding device, and drawing pole is hinged with the second sliding device on the straightedge, and the structure of the second sliding device is the same as that of the first sliding device. The connection principle of the sliding device is the same.

The connection principle of the second sliding device is the same as that of the first sliding device, including the second sliding block arranged on the ruler, the second sliding block on the ruler is provided with fixing bolts, the drawing rod and the first sliding block on the ruler The two sliding blocks are hinged. The length of the second sliding block on the straightedge is greater than the width of the straightedge, and the second sliding block on the straightedge slides on the periphery of the straightedge, and the second sliding block can be fixed on the straightedge by fixing bolts. When using the special drawing teaching aid for multifunctional surveying and mapping teaching to draw, you can designate the joint between the drawing rod and the second slider as the center of the circle, and use the drawing rod to draw a circle.

The second sliding device of the ruler and the drawing pole can also be designed to include a gear groove in the ruler and a second sliding square provided with a gear-shaped elastic sheet snapped into the gear groove, and the drawing pole is hinged to the second sliding square , the middle of the ruler is provided with a chute. The length of the second sliding square is less than the width of the ruler, and the elastic sheet of the second sliding square can slide flexibly in the chute of the ruler. snap-fit.

In order to better realize the utility model, further, the painting pole can be designed to include a telescopically connected painting pole fixed end and a painting pole telescopic end. The ruler is inserted into the painting pole, and stretching is realized through drawing and pulling operations. When in use, the joint between the drawing rod and the straightedge can be designated as the center of the circle, and the length of the drawing rod can be used as the radius to draw a circle. According to the needs of drawing, the telescopic end of the drawing rod can be adjusted to change the length of the drawing rod.

In order to better realize the utility model, further, the ruler can be designed to include a fixed end of the ruler connected telescopically and a telescopic end of the ruler, and the telescopic end of the ruler is composed of more than two sets of rulers. The set of rulers is inserted into the ruler, and stretching is realized by drawing and pulling operations. When in use, take the joint of the straightedge and the arc-shaped ruler as the center of the circle, and take the length of the straightedge as the radius to draw a circle. According to the needs of drawing, the shrinking end of the straightedge can be adjusted to change the length of the straightedge.

The utility model provides a special drawing teaching aid for multifunctional surveying and mapping teaching, which can draw conventional graphics, and can also draw parallel, tangent or intersecting arcs, circles and combined curves, and the length, angle, radius, etc. can be adjusted according to needs. Parameters, drawing curves are rich and accurate, effectively improving classroom efficiency.

Description of drawings

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

Fig. 2 is the partially enlarged schematic diagram of the A place of Fig. 1 of the utility model;

Fig. 3 is a schematic diagram of the sliding connection structure of the utility model.

Among the figure: 1-main ruler, 2-fixed ruler, 3-curved ruler, 4-ruler, 5-drawing rod, 6-the first sliding block, 7-elastic sheet, 8-the first sliding square, 9- angle table.

detailed description

Example 1:

This embodiment is described in conjunction with Fig. 1. A special drawing teaching aid for multifunctional surveying and mapping teaching includes a main ruler 1, a fixed ruler 2 and a curved ruler. One end of the main ruler 1 is hinged to one end of the fixed ruler 2 and the curved ruler. , the main ruler 1, the fixed ruler 2 and the curved ruler are coaxially hinged; the hinged end of the main ruler 1 is engraved with a central axis, which is used as an indicator line, and the fixed ruler 2 and the main ruler 1 are hinged. Angle table 9, main ruler 1 and fixed ruler 2 are all provided with scale; Described curve ruler is made up of arc chi 3 and straight edge 4, and arc chi 3 and straight edge 4 are slidably connected by first sliding device, straight edge 4 is provided with a drawing pole 5, and the ruler 4 and the drawing pole 5 are slidably connected through the second sliding device. Described arc ruler 3 and ruler 4 are slidably connected by the first sliding device, as shown in Figure 2, comprise the first slide block 6 that is arranged on the arc ruler 3, the first slide block 6 is provided with fixing bolt , The ruler 4 is hinged with the first sliding block 6 on the arc ruler 3 . The ruler 4 is connected with the drawing pole 5 through the second sliding device, and the structure of the second sliding device is the same as that of the first sliding device, so it will not be repeated here.

Present embodiment can be according to the length scale on the main ruler 1 and the fixed ruler 2 and the angle table 9 on the fixed ruler 2 when using, rotate the main ruler 1 and the fixed ruler 2 to draw the polygon with accurate length and angle; The curved ruler 3 can Draw an arc, adjust the first slide block 6 to adjust the length of the arc, take the hinge of the draw bar 5 and the second slide block as the center, draw a circle with the length of the draw bar 5 as the radius, and adjust the draw bar 5 as required. The position on the straightedge 4 draws the circles of different positions, and the rotation of the straightedge 4 and the first sliding block hinge can draw a circle tangent or intersecting with the arc.

The special drawing tool for multi-functional surveying and mapping teaching in this embodiment can draw conventional graphics, and can also draw parallel, tangent or intersecting arcs, circles and combined curves, and can adjust parameters such as length, angle, and radius as required to draw curves The variety is rich and accurate, effectively improving classroom efficiency.

Example 2:

In this embodiment, on the basis of Embodiment 1, the structure of the sliding device is further optimized. As shown in Figure 3, the curved ruler 3 and the ruler 4 are slidably connected through the first sliding device, including the gear groove in the curved ruler 3 and the first sliding square provided with the gear-shaped elastic sheet 7 snapped into the gear groove. 8. The ruler 4 is hinged to the first sliding block 8 . The ruler 4 is connected with the drawing pole 5 through a second sliding device, and the principle of the second sliding device is the same as that of the first sliding device, so it will not be repeated here.

When the present embodiment is in use, the elastic sheet 7 of the first sliding square 8 in the arc-shaped ruler 3 can slide flexibly in the chute of the arc-shaped ruler 3. The gear slots in the arc ruler 3 are clamped and fixed to realize the controllability of the arc length; the first sliding block 8 is hinged to the ruler 4, and the ruler 4 can be flexibly rotated to draw circles at different positions. In the same way, the ruler 4 and the drawing stick 5 can also change the length and position of the drawing by adjusting the second sliding device.

The special drawing tool for multi-functional surveying and mapping teaching in this embodiment can draw conventional graphics, and can also draw parallel, tangent or intersecting arcs, circles and combined curves, and can adjust parameters such as length, angle, and radius as required to draw curves The variety is rich and accurate, effectively improving classroom efficiency.

Example 3:

In this embodiment, on the basis of Embodiment 1, the structures of the ruler 4 and the drawing stick 5 are further optimized. The ruler 4 includes a straightedge fixed end and a straightedge telescopic end that are telescopically connected, and the drawing rod 5 may be designed to include a telescopically connected drawing rod fixed end and a drawing rod telescopic end. The ruler telescoping end of described ruler 4 is made up of more than two joints, and the ruler is inserted in the ruler 4 to realize expansion and contraction. In the same way, the telescoping end of the drawing pole 5 is made up of more than two sets of rulers, which are inserted into the drawing pole 5 to realize expansion and contraction.

In the use of this embodiment, large-scale patterns can be drawn as required, and graphics can be drawn by stretching the flexible end of the straightedge 4 or the flexible end of the rod 5 of the ruler 5; when drawing a simple pattern, the ruler 4 can be drawn The telescopic end of the ruler or the telescopic end of the painting pole 5 shrinks, which is convenient for storage and easy to carry. The special drawing tool for multi-functional surveying and mapping teaching in this embodiment can draw curves of different sizes according to needs, and the types of drawn curves are rich and accurate, which can effectively improve classroom efficiency.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model.

Claims (7)

1. The special drawing teaching aid 1. a kind of Multifunction mapping is imparted knowledge to students, including main scale（1）, it is characterised in that：Also include fixed ruler（2）With Spline, the main scale（1）One end and fixed ruler（2）, spline one end be articulated as one；The main scale（1）Be hinged One end middle is provided with index line；The fixed ruler（2）With main scale（1）Be hinged one end is provided with angle table（9）, the main scale （1）And fixed ruler（2）Scale is equipped with, the spline is mainly by arc chi（3）And ruler（4）Composition, the ruler（4）On Provided with scale.
2. The special drawing teaching aid 2. a kind of Multifunction mapping according to claim 1 is imparted knowledge to students, it is characterised in that the arc chi （3）With ruler（4）It is slidably connected by the first carriage.
3. The special drawing teaching aid 3. a kind of Multifunction mapping according to claim 2 is imparted knowledge to students, it is characterised in that described first slides Dynamic device includes being arranged on arc chi（3）On the first sliding shoe（6）, the first sliding shoe（6）It is provided with fixing bolt, ruler （4）With arc chi（3）On the first sliding shoe（6）It is be hinged.
4. The special drawing teaching aid 4. a kind of Multifunction mapping according to claim 2 is imparted knowledge to students, it is characterised in that described first slides Dynamic device includes arc chi（3）Interior gear grooved and it is provided with gear-like elastic sheet with gear grooved clamping（7）First slide Square（8）, ruler（4）Square is slided with first（8）It is be hinged.
5. The special drawing teaching aid 5. a kind of Multifunction mapping according to claim any one of 1-4 is imparted knowledge to students, it is characterised in that institute State ruler（4）Mainly it is made up of multiple segmentation chis, segmentation chi is hinged successively.
6. The special drawing teaching aid 6. a kind of Multifunction mapping according to claim any one of 1-4 is imparted knowledge to students, it is characterised in that institute State ruler（4）On be provided with picture bar（5）, ruler（4）With drawing bar（5）It is slidably connected by the second carriage, the picture bar（5） Picture bar fixing end and picture bar telescopic end including flexible connection.
7. The special drawing teaching aid 7. a kind of Multifunction mapping according to claim 6 is imparted knowledge to students, it is characterised in that the ruler （4）Include the ruler fixing end and ruler telescopic end of flexible connection.