CN217598207U - A kind of chart work drawing ruler - Google Patents

Abstract

The utility model discloses a chart operation plotting ruler belongs to navigation guarantee technical field. The chart operation plotting ruler comprises two pairs of main rulers which are connected in parallel, two groups of auxiliary rulers which are detachably connected to the outer sides of the main rulers in a sliding manner, two groups of protractors which are fixedly connected to each side of the inner sides of the two pairs of main rulers and two groups of connecting rods which are connected with the two pairs of main rulers; the bottom edge of the protractor is parallel to the main rulers, two ends of the connecting rod are respectively connected with the two pairs of main rulers in a rotating mode, the rotating circle center of the connecting rod on the main rulers is overlapped with the circle center of the protractor, and an angle marking line arranged on the connecting rod is connected with the circle center of the protractor; and a plurality of groups of latitude ruler scales based on different scales are carved on the auxiliary ruler. The utility model discloses only can accomplish with a pair of integration chart operation plotting ruler in the chart operation of drawing straight line, volume measurement course or position, volume measurement range and distance, reduced the use quantity and the operating procedure of instrument, improved the speed and the precision of chart operation.

Description

A kind of chart work drawing ruler

technical field

The utility model relates to a nautical chart operation drawing ruler, which belongs to the technical field of navigation security.

Background technique

At present, the drawing tools used for charting operations include parallel rulers, subscales, protractors, etc. By using different drawing tools to complete the plotting and measurement of heading and orientation, distance measurement and the plotting of ship position coordinates, and finally complete the continuous Chart work. However, the functions of these drawing tools are relatively simple, each tool can only complete one plotting operation, and the plotting of different elements in the continuous chart operation requires constant replacement of tools. It will also make too many tools on the chart table, which will affect the speed of the chart operator's drawing. In addition, various tools are used for operation, and each tool and each operation step will bring about errors of unequal precision, which will affect the accuracy of chart operations and is not conducive to the safety of ship navigation.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the deficiencies in the prior art, and to provide a chart operation drawing ruler, so as to solve the problems of single function and poor operation accuracy of the chart operation tool in the prior art.

In order to solve the above-mentioned technical problem, the utility model adopts the following scheme to realize:

A drawing ruler for chart operations, comprising two pairs of main rulers connected in parallel with each other, two sets of auxiliary rulers detachably and slidably connected to the outside of the main rulers, two sets of protractors fixedly connected to each side of the inner sides of the two pairs of main rulers, and Two sets of connecting rods connecting two pairs of main rulers; the bottom edge of the protractor is parallel to the main ruler, the two ends of the connecting rods are respectively connected with the two pairs of main rulers in rotation, and the rotation center of the connecting rod on the main ruler is the same as that of the protractor. The circle centers coincide, and the angle marking line arranged on the connecting rod is connected with the circle center of the protractor; the auxiliary ruler is engraved with a plurality of sets of latitude ruler scales based on different scales.

Preferably, the measurement ranges of the two sets of the protractors are respectively 0°˜180° and 180°˜360°.

Preferably, a T-shaped chute is provided on the outer side of the main ruler, the cross section of the auxiliary ruler is I-shaped, and the auxiliary ruler is slidably connected with the T-shaped chute.

Preferably, one end of the auxiliary ruler is provided with a clamping block.

Preferably, the main ruler, the auxiliary ruler, the connecting rod and the protractor are all made of high-transparency and high-strength plexiglass.

Preferably, the rotating connection between the connecting rod and the main ruler is connected by a hexagonal plug screw.

Compared with the prior art, the beneficial effects achieved by the present utility model are:

1. The utility model can complete the chart operation of drawing straight lines, measuring course or azimuth, measuring voyage and distance with only one integrated chart operation drawing ruler, which reduces the number of tools used and the operation steps. , which improves the speed and accuracy of chart operations.

2. The auxiliary ruler of the present invention can be freely exchanged according to the type of different scales, and can be freely slid, so as to quickly measure distances on charts of different scales and at different latitudes.

Description of drawings

1 is a schematic structural diagram of a chart operation drawing ruler provided by an embodiment of the present invention;

2 is a schematic structural diagram of a main ruler in a chart operation drawing ruler provided by an embodiment of the present invention;

3 is a schematic structural diagram of a connecting rod in a chart operation drawing ruler provided by an embodiment of the present invention;

4 is a schematic structural diagram of an auxiliary ruler in a chart operation drawing ruler provided by an embodiment of the present invention;

5 is a side view of a secondary ruler in a chart operation drawing ruler provided by an embodiment of the present invention;

6 is a schematic diagram of a scale on a secondary ruler in a chart operation drawing ruler provided by an embodiment of the present invention;

7 is a schematic structural diagram of a protractor in a chart operation drawing ruler provided by an embodiment of the present invention;

8 is a schematic structural diagram of another protractor in a chart operation drawing ruler provided by an embodiment of the present invention;

Among them, the reference signs are: 1, the main ruler; 2, the auxiliary ruler; 3, the protractor; 4, the connecting rod;

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility. The novel and simplified description does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

As shown in Figures 1 to 8, a chart operation drawing ruler of the present invention includes a main ruler 1, a secondary ruler 2, a connecting rod 4 and a protractor 3; The two sets of connecting rods 4 are connected in parallel with each other, and the two ends of the two sets of connecting rods 4 are respectively rotatably connected with two pairs of main rulers 1, which are used for the parallel and alternate movement of the main rulers 1 in the chart operation; the two sets of protractors 3 are respectively It is fixedly connected to one of the inner sides of the two pairs of main rulers 1, and its bottom edge is parallel to the inner and outer sides of the main ruler 1. The rotation center of the connecting rod 4 on the main ruler 1 coincides with the center of the protractor 3. A straight line is set as the angle marking line, and the angle marking line is connected with the center of the protractor 3, which is used to draw the bearing line or heading line, and measure the bearing degree or heading degree; The outer side of the 2 is used for quick replacement of the secondary ruler 2. There are several sets of scales based on different scales engraved on it, which are used to quickly measure the voyage and distance on different scales and different latitudes.

The measurement ranges of the two groups of the protractors 3 are respectively 0°～180° and 180°～360°, and the semicircular arc of the protractor 3 is marked with scales at every interval of 1°, which can ensure that the accuracy of the measurement angle reaches 0.°5, and is used for Take bearing degrees or heading degrees.

The outer side of the main ruler 1 is provided with a T-shaped chute, while the cross section of the auxiliary ruler 2 is I-shaped. The auxiliary ruler 2 is slidably connected with the T-shaped chute. The upper part of the structure is inserted into the T-shaped chute of the main ruler 1 to achieve close fit and free sliding, which is convenient for quick disassembly and extension of the auxiliary ruler to expand the working range; one end of the auxiliary ruler is provided with a block 6 to prevent the auxiliary ruler The ruler 2 is completely disengaged from the T-shaped chute of the main ruler 1 during the pulling process of the main ruler 1.

In addition, the rotating connection between the connecting rod 4 and the main ruler 1 is connected by a hexagonal plug screw 5, the rotation of the connecting rod 4 is more flexible, and the structural strength and flexibility are improved; the main ruler 1, the auxiliary ruler 2, the connecting rod 4 and the protractor 3 are made of high-transparency, high-strength plexiglass, which is convenient for reading direction and distance values, and improves the ease of use of the plotting ruler.

working principle:

When any ruler on one side of the auxiliary ruler is aligned with the meridian, you can push the main ruler on the other side until the upper (lower) side of the connecting rod is aligned with a certain heading line or bearing line on the chart. The angle marking line on the rod coincides with a certain scale of the protractor, and the heading value or bearing value can be quickly read at this time; each main ruler can be inserted into a sub-ruler that depicts different latitudes and is based on different scales. Quickly read range and distance when the secondary ruler is aligned with the course or bearing line.

To sum up, the utility model can complete the chart operation of drawing straight lines, measuring course or azimuth, and measuring voyage and distance with only one integrated chart operation drawing ruler, which reduces the number of tools used. and operation steps to improve the speed and accuracy of chart operations.

The above is only the preferred embodiment of the present utility model, it should be pointed out that for those skilled in the art, without departing from the technical principle of the present utility model, several improvements and deformations can also be made. These improvements and deformations It should also be regarded as the protection scope of the present invention.

Claims (6)

1. A kind of chart operation plotting ruler, characterized by, including two pairs of main rulers connected in parallel each other, two sets of detachable auxiliary rulers connected outside the main rulers slidably, two sets of protractors fixedly connected to each side in two pairs of main rulers inside and two sets of tie rods connecting two pairs of main rulers; the bottom edge of the protractor is parallel to the main rulers, two ends of the connecting rod are respectively connected with the two pairs of main rulers in a rotating mode, the rotating circle center of the connecting rod on the main rulers is overlapped with the circle center of the protractor, and an angle marking line arranged on the connecting rod is connected with the circle center of the protractor; and a plurality of groups of latitude ruler scales based on different scales are carved on the auxiliary ruler.

2. The chart plotter according to claim 1, wherein the two protractors measure in the ranges of 0 ° to 180 ° and 180 ° to 360 °, respectively.

3. The chart plotter according to claim 1, wherein the main ruler is provided with a T-shaped sliding groove at the outer side, the auxiliary ruler is i-shaped in cross section, and the auxiliary ruler is connected with the T-shaped sliding groove in a sliding manner.

4. The chart plotting apparatus of claim 1 wherein one end of the secondary scale is provided with a latch.

5. The chart plotter according to claim 1, wherein the main scale, the sub-scale, the connecting rod and the protractor are made of high-transparent and high-strength organic glass.

6. The chart plotting ruler of claim 1 in which the rotational connection of the connecting rods to the main ruler is by hexagonal setscrew connection.

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