CN110657789A

CN110657789A - Military quick reading combined tool for graph

Info

Publication number: CN110657789A
Application number: CN201810747995.6A
Authority: CN
Inventors: 张谦益; 曲晨
Original assignee: Army Engineering University of PLA
Current assignee: Army Engineering University of PLA
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2020-01-07

Abstract

The invention relates to a rapid reading combination tool for military graph recognition. The cross-shaped main body support is composed of four parts, namely a cross-shaped main body support, a drawing pointer, a compass and a symmetrical rotary dial, wherein the cross-shaped main body support is composed of support arms in four directions, slide ways are arranged in the support arms in the four directions of the cross-shaped main body support, and the drawing pointer is arranged in the support arms and can slide; the north pointer is fixedly stacked on the front arm of the north direction support arm; a cylindrical hollow rotating shaft is arranged at the cross center of the cross main body bracket, a rotating shaft hole is arranged at the center of the symmetrical rotating dial disc and assembled with the hollow rotating shaft, and the symmetrical rotating dial disc is arranged on the back surface of the cross main body bracket; the system has multiple functions of azimuth angle reading on the map, accurate coordinate quantity reading, linear distance reading, target point location judgment, vertical direction and horizontal direction location deviation angle reading between targets, accurate calibration of a topographic map, location judgment and the like, and meets the operational requirements of fighting all day and night.

Description

Military quick reading combined tool for graph

Technical Field

The invention relates to the field of surveying and mapping instruments and equipment, in particular to a chart measuring tool for recognizing charts of various military troops of army, and particularly relates to a quick chart reading combination tool for military recognition.

Background

The novel army construction requirements clearly provide that' army is to actively adapt to new transformation requirements and improve the competitive power in the real grab. The key indexes of the winning ability include the graph recognition and the measurement ability on the graph, whether the knowledge and the skill of the graph recognition can be mastered, and the key indexes are important indexes for judging whether the soldier is trained and whether the soldier is mastered with the hard military basic skill. In the six-meeting six-energy proposed by the 'opinion on strengthening the cultivation of the accomplice talents' of the full-military conspiracy long meeting, the graph reading, the computation and the drawing are directly related, and the requirement of the graph reading ability is improved to the height of winning the modern war to know. The measurement types on the drawings comprise various measurement and conversion such as distance, accurate coordinates, azimuth angles and the like, and the characteristics of complicated and various tool types, complicated steps, high difficulty in mastering the method and the like are presented, so that the difficulty in understanding and mastering the personnel with weak spatial thinking ability is high, and the error rate of measurement on the officer and soldier drawings of the troops is high. For example, in the conventional method, magnetic azimuth reading is performed by using a north-pointing vector, and the steps include four steps of connecting, marking, cutting and reading, wherein a marking topographic map corresponding to the marking comprises four steps of finding, cutting, aligning and rotating; when the magnetic azimuth angle of the protractor is used, the position relation between a target point and a measuring point must be determined firstly, when the target point is at different positions on the left side and the right side, the placing positions of the protractors are different, conversion must be carried out after measurement, and the direction angle measurement error is caused when any one step fails. In the process of battle commanding, if the quantity reading error of the azimuth angle occurs to the commander, fighter, communication support squad and other personnel, the error of major military combat action such as deviation of the artillery from the target of attack, failure of communication connection, failure of reactance suppression, south thill and north rut of army march and the like can be caused.

Disclosure of Invention

The invention aims to solve the problems and provide a combined tool capable of quickly and accurately measuring and reading for officer and soldier combat training of troops.

A military quick drawing reading combination tool comprises a cross main body support, a drawing pointer, a north pointer and a symmetrical rotary dial, wherein the cross main body support comprises support arms in four directions, coordinatographs are designed on the support arms in the north and east directions, and linear scales are designed on the support arms in the east and west directions; azimuth deviation angle rulers are designed on the support arms in the east direction, the west direction and the south direction. Slideways are arranged in the four-direction support arms of the cross-shaped main body support, and the drawing pointer is arranged in the support arms and can slide; the north pointer is fixedly stacked on the front arm of the north direction support arm; a cylindrical hollow rotating shaft is arranged at the cross center of the cross main body bracket, a rotating shaft hole is arranged at the center of the symmetrical rotating dial disc and assembled with the hollow rotating shaft, and the symmetrical rotating dial disc is arranged on the back surface of the cross main body bracket; the hollow rotating shaft outer ring of the cross main body support is provided with 14 rotating positioning concave points, the north direction is started towards the center of the support arm, the rotating positioning concave points are arranged at intervals of 30 degrees from 15 degrees in the clockwise direction, 2 rotating positioning concave points are arranged at 0 degree and 180 degrees, two symmetrical rotating positioning convex points are designed on the outer side of a rotating shaft hole on the symmetrical axis of the corresponding symmetrical rotating dial, and the rotating positioning convex points are clamped into the positioning concave points to position the symmetrical rotating dial. The four-direction bracket arms and the rotary dial are designed in a combined mode and can be used as an azimuth angle reading tool.

The length of the support arms in the east and west directions of the cross-shaped main body support is the same, the support arms in the north direction are slightly longer than the support arms in the south direction, and the support arms in the south direction are slightly shorter than the support arms in the east and west directions; the length of the support arms in the south and north directions is different, and the total length is slightly longer than that of the support arms in the east and west directions. The middle positions of the four support arms are in a cuboid hollow design, and slide ways are arranged in the support arms in the east direction, the west direction and the north direction and used for internally arranging drawing pointers. The southern of the cross main body bracket adopts a cylindrical hollow design on the arrow tip of the bracket arm for threading and tying a hanging rope to hang in front of the chest, thereby realizing the function of convenient carrying, and the southern is coated with a fluorescent mark on the outer end of the front side of the bracket.

The drawing pointer is arranged in the support arms in the east, the west and the north directions, the outer side end of the drawing pointer is in an arrow tip shape, the cylindrical body part of the drawing pointer is in a rectangular cross section cylindrical design, and the front surface of the inner side end of the drawing pointer is provided with a convex structure with a stopping function. The front of the arrow point of the drawing pointer is coated with a fluorescent mark.

The symmetrical rotary dial is in a butterfly-shaped fan-shaped symmetrical structure, each rotary dial is in a fan-shaped structure with 5-00 density positions, the long scale lines correspond to 1-00 density positions, and the short scale lines correspond to 20 density positions.

For military use picture quick quantity reading combination tool for literacy, when the symmetry formula rotary dial was in the state of depositing, two rotated the location salient point and locate 0 and 180 in the department 2 rotated the location concave points of department of crossing at cross main body support center, the symmetry formula rotary dial was in south, north at this moment directly under the support arm, south, north support arm played the effect that the protection symmetry formula rotary dial prevented to be accidentally broken. When the symmetrical rotary dial is in a reading state, the azimuth angle of the target point at any position can be accurately read only by rotating the symmetrical rotary dial for 6 times.

The measurement and reading function of the cross main body support is designed in a partition mode, one side of each of an east support arm, a west support arm and a south support arm is a target horizontal direction deflection angle measurement area and a target vertical direction deflection angle measurement area, the minimum scale is divided into 5-bit, the division length of the 5-bit scale is 3.14mm according to the arm extension distance of 60 cm; the area of the inner side of the support arm in the north and east directions is 1: 5 thousands of accurate coordinators, the minimum scale division is 1mm, and the corresponding real-area distance of the numerical value of 1-10 on the coordinators is 100-1000 m; the north side of the support arm in the east and west directions is a linear distance measuring area, the scale of 0 points to the west, the minimum scale is 1mm, the marked scale of 1-3 is 1-3cm correspondingly, the scale of 0 points to the east, the minimum scale is 1mm, and the scale of 1-10 points is 2-20mm correspondingly; the whole support arm in the east and west directions can directly read the linear length within the range of 5cm, and when the drawing pointer is drawn out, the linear length within the range of 10cm can be directly read in the east and west directions.

The military quick picture reading combined tool has symmetrical rotating dial made of transparent material and cross body support, drawing pointer, north pointer, rotating shaft and other parts of non-ferrous alloy material.

For military use, the quick reading combination tool for the map is used, and a mode of using a 5-00-mil low-angle rotating dial to replace a traditional 60-00-mil dial and a 360-degree dial for integral use is adopted, so that the structure of the azimuth angle measuring dial is simplified, and the operation steps are simpler; the symmetrical rotary dial is installed in an embedded mode below the cross main body support, so that the symmetrical rotary dial can be tightly attached to a map in the using process, and measurement errors caused by hanging and other overlapping designs are avoided; the edge of a rotating shaft of the symmetrical rotating dial adopts a right-angled side tooth design, and the right-angled side tooth of the edge of the rotating shaft can vertically coincide with the inner angle position of the precise coordinate graduated scale no matter which positioning angle the rotating dial rotates to, so that the measurement and reading error caused by the suspension design of the cross main body bracket is avoided; and fourthly, the rotating shaft of the symmetrical rotary dial is designed by adopting 2 positioning salient points, the rotating shaft of the cross main body bracket is designed by adopting 14 positioning concave points, when the positioning salient points enter the positioning concave points of 0 degree and 180 degrees on the north-south central line, the symmetrical rotary dial is stacked under the south-north bracket arm and is positioned at a protected position, and when the positioning salient points enter other positioning concave points, the azimuth angle can be quickly read for a target point in any direction.

For military use recognizing map is with quick volume of drawing combination tool, north, east have the coordinatometer to the design on the support arm, can regard as accurate seat volume reading tool, at 1: accurate coordinates are measured and read on 5 thousands of military topographic maps, and the error is less than or equal to +/-15 m.

The military image-reading rapid chart-reading combined tool is characterized in that linear scales are designed on support arms in the east and west directions and can be used as linear distance reading tools, and the whole support arms in the east and west directions can directly read linear distances within 5cm (the estimated distance can be less than or equal to 0.5 mm); after the drawing pointers in the support arms in the east and west directions are pulled out, the range of reading the linear distance can be expanded to 10 cm.

The military image recognition chart quick reading combination tool is characterized in that azimuth deviation angle rulers are designed on support arms in the east direction, the west direction and the south direction and can be used as an inter-target azimuth deviation angle reading tool; horizontal deflection angles between targets can be measured on the support arms in the east and west directions, and the maximum measurement horizontal deflection angle range is 80 mil; the azimuth deviation angle between targets in the vertical direction can be measured on the south-direction support arm, and the maximum measurement vertical deviation angle range is 30-density.

The military image-reading chart rapid reading combination tool is designed by combining the south and north support arms and the north pointer, and can be used as a tool for accurately calibrating a topographic map and judging the direction in situ; the four-direction support arms and the rotary dial are designed in a combined mode and can be used as an azimuth angle reading tool to judge the local position of a target point. Fluorescent marks are designed on the support arms in the north, east, south and west directions, so that the mark directions are more striking; marking 0-00 mil on the support arm in the north direction, marking 15-00 mil on the support arm in the east direction, marking 30-00 mil on the support arm in the south direction, and marking 45-00 mil on the support arm in the west direction; the rotary dial is symmetrically designed, the range of the measurement and reading scales is 5-00 mil, the minimum measurement and reading scales are 20 mil, the azimuth angle of any target point can be quickly and accurately measured and read only by rotating the rotary dial 6 times, and the corresponding true azimuth angle and magnetic azimuth angle can be obtained through deflection angle conversion.

The rapid map reading combination tool for military map recognition has multiple functions of azimuth angle reading on the map, accurate coordinate quantity reading, linear distance reading, target point local azimuth determination, vertical direction and horizontal direction azimuth deviation reading between targets, accurate terrain map calibration, local azimuth determination and the like, and meets the operational requirements of fighting all day and night. The method and the steps for measuring are simplified, the error rate of measurement and reading caused by misoperation is greatly reduced, and the actual effect of measuring officers and soldiers on the diagrams in the battle training is improved. The tool meets the requirement of officers and soldiers on carrying because of small volume and light weight; the device has the characteristics of simple structure, simple and convenient operation and integrated functions, and meets the research and development design concept of military equipment or training equipment clinging to actual combat; the design visual angle of the novel decorative pendant is suitable for aesthetic standards of officers and soldiers, the functional layout is reasonable, the appearance is exquisite, and the novel decorative pendant can be worn as a pendant.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the reverse structure of the present invention;

FIG. 3 is a schematic view of a cross-shaped main body bracket;

FIG. 4 is a schematic view of a symmetrical rotary dial;

FIG. 5 is a schematic diagram of a front plane structure of the pull pointer;

FIG. 6 is a side plan view of the pull out pointer;

FIG. 7 is a schematic view of the outer cross section of the stent arm;

FIG. 8 is a schematic cross-sectional view of a middle portion of a support arm;

FIG. 9 is a schematic structural view of the pull pointer of the present invention after being pulled out;

reference number in the figure, 1.2.3.4-support arm; 5.6.7-Pull pointer; 8-arrow point hanging hole; 9-orientation identification; 13.14.15.16-fluorescent labeling; 17-north arrow; 18-a symmetric rotary dial; 19-a hollow rotating shaft; 21-a coordinatometer; 22-coordinate ruler; 24-azimuth offset square; 25-a horizontal azimuth offset square; 26-vertical position angle square; 27-linear scale; 28-locating the pits; 31-positioning the bumps.

Detailed Description

The invention is further described with reference to the following specific embodiments and the accompanying drawings. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

Example (b): a rapid reading combination tool for military image recognition is composed of a cross main body support, a drawing pointer, a north pointer and a symmetrical rotary dial, as shown in fig. 1, 2 and 3. The cross main body bracket is composed of bracket arms in east, south, west and north directions, and coordinatometer are designed on the bracket arms in north and east directions; the east support arm and the west support arm are provided with linear graduated scales; orientation angle-deviating rulers are designed on the support arms in the east direction, the west direction and the south direction. The north direction support arm is marked with 0-00 density position, the east direction support arm is marked with 15-00 density position, the south direction support arm is marked with 30-00 density position, and the west direction support arm is marked with 45-00 density position. North, east have the coordinatometer to the design on the support arm, can regard as the accurate scalar reading instrument of sitting, at 1: accurate coordinates are measured and read on 5 thousands of military topographic maps, and the error is less than or equal to +/-15 m. The east and west support arms are provided with linear scales which can be used as linear distance measuring and reading tools, and the whole east and west support arms can directly measure and read linear distances within 5cm (the estimated distance can be less than or equal to 0.5 mm). Azimuth deviation angle rulers are designed on the support arms in the east direction, the west direction and the south direction and can be used as an azimuth deviation angle reading tool among targets; horizontal deflection angles between targets can be measured on the support arms in the east and west directions, and the maximum measurement horizontal deflection angle range is 80 mil; the azimuth deviation angle between targets in the vertical direction can be measured on the south-direction support arm, and the maximum measurement vertical deviation angle range is 30-density. The front ends of the corresponding support arms are marked with corresponding direction marks of east, south, west and north characters and are coated with fluorescent marks.

As shown in fig. 7 and 8, the middle of the four direction support arms of the cross-shaped main body support is designed to be hollow, and a slide way is arranged in the middle. The structure of the drawing pointer is shown in fig. 5 and 6, the outer side end of the drawing pointer is in an arrow point shape, the cylindrical body part of the drawing pointer is in a rectangular cross section cylindrical design, the tail end of the pointer is provided with a convex structure, and the front face of the arrow point of the drawing pointer is coated with a fluorescent mark. The drawing pointer is arranged in the support arms in the east, the west and the north directions and can slide, and the convex structure at the tail end of the drawing pointer can prevent the drawing pointer from falling off the slide way. As shown in fig. 9, after the pull-out pointer in the arm of the east and west direction support is pulled out, the range of linear distance measurement can be expanded to 10 cm.

The north pointer is overlapped and fixed on the front arm of the north direction bracket arm. As shown in fig. 3, a cylindrical hollow rotating shaft is arranged in the center of the cross main body bracket. As shown in figure 4, the symmetrical rotary dial adopts a butterfly-shaped fan-shaped symmetrical structure, each rotary dial is of a fan-shaped structure with 5-00 density positions, the long scale lines correspond to 1-00 density positions, and the short scale lines correspond to 0-20 density positions. The center of the symmetrical rotary dial is provided with a rotating shaft hole which is assembled with the hollow rotating shaft, and the symmetrical rotary dial is arranged on the back of the cross main body bracket. The outer ring of a hollow rotating shaft of the cross main body bracket is provided with 14 rotating positioning concave points, the rotating positioning concave points are arranged in the north direction to the center of the bracket arm, the rotating positioning concave points are arranged at intervals of 30 degrees from 15 degrees in the clockwise direction, 2 rotating positioning concave points are arranged at 0 degree and 180 degrees, two symmetrical rotating positioning convex points are designed on the outer side of a rotating shaft hole on the symmetrical axis of the corresponding symmetrical rotating dial, and the rotating positioning convex points are clamped into the positioning concave points to position the symmetrical rotating dial.

The length of the support arms in the east and west directions of the cross-shaped main body support is the same, the support arms in the north direction are slightly longer than the support arms in the south direction, and the support arms in the south direction are slightly shorter than the support arms in the east and west directions; the length of the support arms in the south and north directions is different, and the total length is slightly longer than that of the support arms in the east and west directions. The middle positions of the four support arms are in a cuboid hollow design, and slide ways are arranged in the support arms in the east direction, the west direction and the north direction and used for internally arranging drawing pointers. The southern of the cross main body bracket adopts a cylindrical hollow design on the arrow point of the bracket arm, and is provided with a sword point hanging hole for threading a hanging rope to be hung in front of the chest, thereby realizing the function of convenient carrying.

The measurement and reading function of the cross main body support is designed in a partition mode, one side of each of the east support arm, the west support arm and the south support arm is a horizontal deflection angle measurement area between targets and a vertical deflection angle measurement area between targets, the minimum scale is divided into 5-bit scales, and the division length of the 5-bit scales is 3.14mm according to the arm extension distance of 60 cm; the area of the inner side of the north and east directional support arms is 1: 5 ten thousand accurate coordinatographs, the minimum scale division is 1mm, and the corresponding actual distance of the numerical value of 1-10 on the coordinatographs is 100 plus 1000 m; the north side of the support arm in the east and west directions is a linear distance measuring area, the scale of 0 points to the west, the minimum scale is 1mm, the marked scale of 1-3 is 1-3cm correspondingly, the scale of 0 points to the east, the minimum scale is 1mm, and the scale of 1-10 points is 2-20mm correspondingly; the whole support arm in the east and west directions can directly read the linear length within the range of 5cm, and when the drawing pointer is drawn out, the linear length within the range of 10cm can be directly read in the east and west directions.

The military image-reading chart rapid reading combination tool can be used for measuring and reading accurate coordinates on a 1: 5-ten-thousand military topographic map when being used as a measuring and reading tool for accurate coordinates. The north direction support arm is marked with longitudinal edge reading scales of the coordinatometer, the east direction support arm is marked with transverse edge reading scales of the coordinatometer, and the '0' scale is marked at the top point of an inner angle of the north direction support arm and the east direction support arm;

label

1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ten scales in proper order from "0" scale northward direction support arm, totally 2cm are long, correspond 1 respectively: a distance of 100m to 1000m on the ordinate on a 5-thousand military topographic map; sequentially marking ten scales of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 from the scale of 0 to the support arm in the east direction, wherein the scales are 2cm long and respectively correspond to the distance of 100m to 1000m of the horizontal coordinate of the 1: 5 military topographic map; the minimum read distance is 50m, and the estimated distance can be less than or equal to 15 m.

When the military image recognition chart quick reading combination tool is used as a linear distance reading tool, the functional quantity reading scales of the ruler are marked on the support arms in the east and west directions; the scale of 0 is marked at the vertex of the inner angle between the support arm in the north direction and the support arm in the east direction, the support arms are marked with 1, 2 and 3cm from the scale of 0 to the west direction in sequence, and the scale is read to be 1mm in the minimum amount; marking the length of 2cm from the scale of 0 to the support arm in the east direction, and marking ten scales of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 in an accurate coordinate quantity reading mode, wherein each marking number corresponds to 2 mm; the whole support arm in the east and west directions can directly read the linear distance within 5cm (the estimated distance can be less than or equal to 0.5 mm); after the drawing pointers in the support arms in the east and west directions are pulled out, the range of reading the linear distance can be expanded to 10 cm.

When the rapid image measuring and reading combination tool for military image recognition is used as an image measuring and reading tool for azimuth deflection angles between targets, the south-direction support arm is vertically placed in an upward direction, the horizontal-direction deflection angles between the targets can be measured and read on the east-west-direction support arm correspondingly, each scale corresponds to a deflection angle of 5mm in the horizontal direction, and the horizontal deflection angle of 80 mm can be directly measured and read on the east-west-direction support arm at most; on the south to the support arm, south has marked "0" dense position scale to the interior angle summit of support arm and west to the support arm, has marked 3 groups such as 5, 15, 25 dense position scales from "0" dense position scale south in proper order, and the minimum scale is 5 dense positions, but the biggest volume reads the azimuth deflection angle 30 dense positions between the target in the vertical direction on south to the support arm.

When the rapid reading combination tool for the military image recognition chart is used as a reading tool for an azimuth angle on the chart, the cross is correspondingly marked with four directions of north, east, south and west; marking 0-00 mil on the support arm in the north direction, marking 15-00 mil on the support arm in the east direction, marking 30-00 mil on the support arm in the south direction, and marking 45-00 mil on the support arm in the west direction; the rotating dial is accurately marked with 5-00-mil volume reading scales, the long scale line is 1-00 mil, the short scale line is 0-20 mil, the rotating dial can be rotated to perform volume reading on the coordinate azimuth angle of any target point, and the corresponding true azimuth angle and magnetic azimuth angle can be obtained through deflection angle conversion.

When the rapid reading combination tool for military map reading is used as a tool for calibrating a topographic map, the south and north support arms of the cross main body support coincide with the magnetic meridian on the topographic map, the topographic map is rotated, and when the north end of the north pointer on the north support arm is consistent with the direction of the north support arm, the topographic map is calibrated accurately.

When the military image-reading quick reading combination tool is used as a tool for judging the position in the spot, the cross main body bracket is horizontally placed, and when a north pointer on a north direction bracket arm is static, the direction pointed by the north end of the magnetic pointer is the magnetic north direction of the spot.

The military chart-reading rapid reading combination tool is used as a tool for judging the local position of a target point, the cross main body support is horizontally placed, when the north support arm is consistent with the north end direction of a magnetic needle of a north-pointing needle, azimuth angles on the four direction arms are used for marking density data, the area where the target point is located is firstly judged, then the rotating dial is rotated to the corresponding area, and finally, according to the accurate azimuth angle density value of the target point, the corresponding density scale of the azimuth angle is found out on the rotating dial. The numerical direction of the corresponding azimuth angle from the central circular hole of the cross main body bracket arm to the rotary dial is the site direction of the target point.

The military chart-reading rapid reading combination tool is used as a tool with functions of calibrating a topographic chart, judging the position in situ, judging the position of a target point in situ and the like, and when the military chart-reading rapid reading combination tool is used at night, fluorescent identification points are arranged on the magnetic needle of the compass, four direction arms and a pull pointer of the cross main body support, so that the guarantee requirements of officers and soldiers on fighting training at night are met.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.

Claims

1. The military quick reading combination tool for the map is characterized by comprising a cross main body support, a drawing pointer, a north pointer and a symmetrical rotary dial, wherein the cross main body support is composed of support arms in four directions, coordinatographs are designed on the support arms in the north and east directions, and linear scales are designed on the support arms in the east and west directions; azimuth deviation angle rulers are designed on the support arms in the east direction, the west direction and the south direction; slideways are arranged in the four-direction support arms of the cross-shaped main body support, and the drawing pointer is arranged in the support arms and can slide; the north pointer is fixedly stacked on the front arm of the north direction support arm; a cylindrical hollow rotating shaft is arranged at the cross center of the cross main body bracket, a rotating shaft hole is arranged at the center of the symmetrical rotating dial disc and assembled with the hollow rotating shaft, and the symmetrical rotating dial disc is arranged on the back surface of the cross main body bracket; the hollow rotating shaft outer ring of the cross main body support is provided with 14 rotating positioning concave points, the north direction is started towards the center of the support arm, clockwise direction is adopted, starting from 15 degrees, 12 rotating positioning concave points are arranged at intervals of 30 degrees, 2 rotating positioning concave points are arranged at 0 degrees and 180 degrees, two symmetrical rotating positioning convex points are designed on the outer side of a rotating shaft hole on the symmetrical axis of the corresponding symmetrical rotating dial, the rotating positioning convex points are clamped into the positioning concave points to position the symmetrical rotating dial, and the four direction support arms and the rotating dial are designed in a combined mode and can be used as azimuth angle reading tools.

2. The rapid reading combination tool for military literacy charts of claim 1, wherein the east and west direction support arms of the cross main body support are the same in length, the north direction support arm is slightly longer than the south direction support arm, the middle positions of the four support arms are in a cuboid hollow design, and the support arms in the east, west and north directions are provided with slideways for internally arranging drawing pointers.

3. The rapid reading combination tool for military literacy charts of claim 2, wherein the arrow tip of the south-facing support arm of the cross main body support adopts a cylindrical hollow design for threading and hanging a rope.

4. The rapid reading assembly for military literacy charts of claim 3, wherein the outer end of the front side of said south support is coated with a fluorescent label.

5. The tool set forth in claim 2, wherein the pull-out pointer is built in the arms of the support in the east, west and north directions, the outer end of the pull-out pointer is in an arrow-tip shape, the column of the pull-out pointer is in a column with a rectangular cross section, and the front of the inner end of the pull-out pointer is provided with a convex structure with a stopping function.

6. The rapid reading assembly for military charts of claim 5 wherein the front surface of the arrow point of the pull pointer is coated with a fluorescent mark.

7. The tool set forth in claim 1, wherein the symmetrical rotary scales are in a butterfly-shaped sector symmetrical structure, each rotary scale is in a sector structure with 5-00 mil positions, the long scale lines correspond to 1-00 mil positions, and the short scale lines correspond to 20 mil positions.

8. The rapid reading assembly for military literacy charts of claim 1, wherein: the reading function of the cross main body bracket is designed in a partitioning manner: one side of each of the east and west support arms and the south support arm is a horizontal deflection angle measuring area between targets and a vertical deflection angle measuring area between targets, the minimum scale division is 5 dens, and the division length of the 5 dens scale is 3.14mm according to the arm spread distance of 60 cm; the area of the inner side of the north and east directional support arms is 1: 5 ten thousand accurate coordinatographs, the minimum scale division is 1mm, and the corresponding actual distance of the numerical value of 1-10 on the coordinatographs is 100 plus 1000 m; the north side of the support arm in the east and west directions is a linear distance measuring area, the scale of 0 points to the west, the minimum scale is 1mm, the marked scale of 1-3 is 1-3cm correspondingly, the scale of 0 points to the east, the minimum scale is 1mm, and the scale of 1-10 points is 2-20mm correspondingly; the whole support arm in the east and west directions can directly read the linear length within the range of 5cm, and when the drawing pointer is drawn out, the linear length within the range of 10cm can be directly read in the east and west directions.

9. The rapid reading assembly for military literacy charts of claim 1, wherein: the symmetrical rotary dial is made of transparent materials, and the cross main body support, the drawing pointer, the compass and the rotating shaft are made of non-ferrous alloy materials.