CN205044375U - New -type survey and drawing chi for instrument - Google Patents

Abstract

The utility model belongs to the technical field of surveying and mapping tools, in particular to a novel ruler for surveying and mapping tools. The novel surveying and mapping tool ruler includes a ruler body, which is characterized in that: one end of the ruler body is provided with a rotatable fulcrum, the fulcrum is provided with a telescopic scale close to the bottom edge of the ruler body, and a sliding scale is provided on the telescopic scale Block A, the lower end of the slider A is provided with a pen slot for placing brushes, the upper end of the slider A is provided with a circular fixing bolt, the upper end of the ruler is provided with a track, the inside of the track is provided with a slider B, and the side of the ruler is provided with a moving ruler. , the moving ruler is provided with a rotating shaft, and the moving ruler is connected with the slider B with a rotating shaft. The structure is simple, and it is convenient to use; it is convenient for surveyors and mappers to draw, and solves the drawing problem mentioned in the background technology; the cost is low, and it is convenient for popularization and application.

Description

Ruler for new surveying and mapping tools

(1) Technical field

The utility model relates to a novel surveying and mapping tool ruler, which belongs to the technical field of surveying and mapping tools.

(2) Background technology

Surveying and mapping engineering often requires drawing, especially it is inconvenient to carry a lot of drawing tools (such as triangular plate and compasses) during the work process. The triangular plate generally has scales, but the compass does not. To draw a circle with a specified radius or diameter, a straight line is required. It is very inconvenient for the surveyors to switch between the triangular plate and the compass when drawing, and the two take up a lot of space and are not convenient to carry. At the same time, when drawing a straight line, due to the limited length of the ruler, it needs to be moved. The ruler body meets the surveying and mapping requirements, and the operation is cumbersome, which brings inconvenience to users.

(3) Contents of the invention

In order to make up for the defects of the prior art, the utility model provides a new surveying and mapping tool ruler with simple structure, convenient use and more convenient surveying and mapping.

The utility model is achieved through the following technical solutions:

A new ruler for surveying and mapping tools, including a ruler body, is characterized in that: one end of the ruler body is provided with a rotatable fulcrum, and a telescopic scale is arranged at the fulcrum close to the bottom of the ruler body, and a telescopic scale is arranged on the telescopic scale There is a slider A, the lower end of the slider A is provided with a pen slot for placing brushes, the upper end of the slider A is provided with a circular fixing bolt, the upper end of the ruler is provided with a track, the inside of the track is provided with a slider B, and the side of the ruler is provided with a The moving ruler is provided with a rotating shaft above the moving ruler, and the moving ruler is connected with the slide block B with a rotating shaft.

in:

The telescopic scale is cylindrical, and the diameter of each large cylinder is 5mm larger than that of each small cylinder, and the telescopic scale can be extended or contracted according to the actual needs of drawing.

The fulcrum is a strut structure inclined to the paper surface, one end of the strut structure is fixed on the ruler body, and the other end is arc-shaped close to the paper surface, so that the fulcrum is not perpendicular to the paper surface to achieve accurate drawing.

The utility model is realized through the following working principle: when it is necessary to draw a circle, the fulcrum coincides with the center of the required drawing, the distance marked on the moving slider A to the required telescopic scale is used as the radius, and the circular fixing bolt is rotated , to fix the slider A, and then rotate the telescopic scale around the fulcrum; when the drawn line exceeds the length of the scale, slide and move the scale to increase the length of the scale to meet the drawing requirements. The ruler forms a certain angle, which is suitable for surveying and mapping on inclined surfaces.

The beneficial effects of the utility model are: simple structure and convenient use; it is convenient for surveyors and mappers to draw, and solves the problem of drawing mentioned in the background technology; the cost is low, and it is convenient for popularization and application.

(4) Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the schematic diagram of fulcrum structure.

In the figure: 1. ruler body; 2. fulcrum; 3. telescopic scale; 4. slider A; 5. pen slot; 6. circular fixing bolt; 7. track; 8. slider B; 9. moving ruler ; 10, rotating shaft.

detailed description

Accompanying drawing is the specific embodiment of the utility model.

As shown in Figure 1, the ruler of the new surveying and mapping tool of the utility model comprises a ruler body 1, and one end of the ruler body 1 is provided with a rotatable fulcrum 2, and the fulcrum 2 is provided with a telescopic function close to the bottom edge of the ruler body 1. Scale 3, telescopic scale 3 is provided with slide block A4, and the middle lower end of slide block A4 is provided with pen groove 5 to be used for placing paintbrush, and the upper end of slide block A4 is provided with circular fixing bolt 6, and the upper end of scale body 1 is provided with track 7 , track 7 inside is provided with slide block B8, chi body 1 side is provided with moving chi 9, is provided with rotating shaft 10 above moving chi 9, and moving chi 9 is connected with sliding block B8 with rotating shaft 10.

The telescopic scale 3 is cylindrical, and every big tube is 5mm more than every little tube diameter, can expand or shrink this telescopic scale 3 according to the actual needs of drawing.

As shown in Figure 2, the fulcrum 2 is a strut structure inclined to the paper surface. One end of the strut structure is fixed on the ruler body 1, and the other end is arc-shaped close to the paper surface, so that the fulcrum 2 is not perpendicular to the paper surface. The accuracy of the diagram.

When it is necessary to draw a circle, coincide the fulcrum 2 with the center of the required drawing, move the slider A4 to the distance marked on the required telescopic scale 3 as the radius, turn the circular fixing bolt 6 to fix the slider A4, and then Just make the telescopic scale 3 rotate around the fulcrum 2; when drawing a straight line exceeds the length of the scale body, slide and move the scale 9 to increase the length of the scale body 1 to meet the drawing requirements. 1 Form a certain angle, suitable for surveying and mapping of slopes.

Claims (3)

1. A ruler for a new type of surveying and mapping tool, including a ruler body (1), characterized in that: a rotatable fulcrum (2) is provided at one end of the ruler body (1), and the fulcrum (2) is close to the ruler The bottom of the body (1) is provided with a telescopic scale (3), the telescopic scale (3) is provided with a slider A (4), and the middle lower end of the slider A (4) is provided with a pen slot (5) for placing a paintbrush , the upper end of the slider A (4) is provided with a circular fixing bolt (6), the upper end of the scale body (1) is provided with a track (7), and the inside of the track (7) is equipped with a slider B (8), the scale body (1) The side is provided with moving ruler (9), and moving ruler (9) is provided with rotating shaft (10) above, and moving ruler (9) is connected with slide block B (8) with rotating shaft (10). 2. The new ruler for surveying and mapping tools according to claim 1, characterized in that the telescopic scale (3) is cylindrical, and the diameter of each large cylinder is 5mm greater than that of each small cylinder. 3. The plotter for surveying and mapping engineering according to claim 1, characterized in that the fulcrum (2) is a strut structure inclined to the paper surface, one end of the strut structure is fixed on the scale body (1), and the other One end is close to the paper surface and the other end is arc-shaped.