CN218777344U

CN218777344U - Chart operation ruler for teaching

Info

Publication number: CN218777344U
Application number: CN202221831208.4U
Authority: CN
Inventors: 赵阳; 庞玺斌; 王海霞
Original assignee: Dalian Maritime University
Current assignee: Dalian Maritime University
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2023-03-31
Anticipated expiration: 2032-07-15

Abstract

The utility model provides a chart operation chi is used in teaching, including the oval-like angle chi of making with transparent hard material, the angle chi constitutes an entirety after connecting through the rectangle chi body in the middle by upper and lower two semi-circular chi bodies, the rectangle chi body is along the horizontal direction activity cartridge has the ruler, and clockwise along the circumferencial direction on the back of two semi-circular chi bodies is carved with from 0-360 angle scale mark, 0 degree scale mark is carved in the positive middle at upper semi-circular chi body top, two straight lines of vertical cross are carved in the centre of a circle department at the semi-circular chi body back, the intersection of two straight lines is the central point of semi-circular chi body; the upper part of the back of the ruler is marked with length scale marks from 0cm to 30 cm. The utility model discloses a constitute combination chi in to the angle chi with ruler cartridge, this combination chi uses portably when the chart operation, and angle chi and ruler can be each other, relative translation, can conveniently carry out the airline drawing operation in a flexible way, and the straight line directionality of drawing is clear and definite, and the precision is higher.

Description

Chart operation ruler for teaching

Technical Field

The utility model relates to a marine graphics primitive technical field particularly, especially relates to a chart operation chi is used in teaching.

Background

When a navigation instructor or a trainee carries out a chart operation, a drawing tool is required to draw a course on the chart, two identical navigation isosceles right-angle triangular plates are usually used for the operation, and the navigation triangular plates are marked with double circle angle scales of 0-180 degrees and 180-360 degrees. When a course is drawn on a chart, the compass rosette (a scale disc marked with 0-360 degrees) or any radial line on the chart is used as a reference, the set square A is rotated to enable the direction of the bevel edge of the set square A to be parallel to a required course (degree), the set square B is used for translating the bevel edge of the set square A to a ship position, and a straight line is drawn at a ship passing position, namely the straight line is a reverse line of a planned course or a planned course.

1. The navigation set square is adopted to carry out the chart operation, the precise matching of double rules is needed, the angle translation is carried out, larger drawing errors are easy to occur, a plurality of course lines are required to be drawn in the general chart operation, the double rules are required to be repeatedly operated and translated for a plurality of times, and the operation is complicated;

2. the navigation set square adopts double-circle scales, so that the scales are easy to be seen by students; the straight line drawn by the navigation triangle plate at last has two directions, and the trainee can easily judge the error of the required planned course direction.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a combined ruler which combines an angle ruler and a ruler, wherein the combined ruler has angle scale marks, length scale marks and orientation marks respectively engraved on the ruler bodies of the angle ruler and the ruler, and can rapidly and accurately perform a chart operation.

The utility model discloses a technical means as follows: a chart operation ruler for teaching comprises an oval-like angle ruler made of transparent hard materials, wherein the angle ruler is formed by connecting an upper semicircular ruler body and a lower semicircular ruler body through a middle rectangular ruler body, the rectangular ruler bodies are movably inserted with straight rulers along the horizontal direction, angle scale marks of 0-360 degrees are clockwise carved on the back surfaces of the two semicircular ruler bodies along the circumferential direction, the 0-degree scale mark is carved in the middle of the top of the upper semicircular ruler body, two straight lines which are vertically crossed are carved in the circle center of the back surface of the semicircular ruler body, and the cross position of the two straight lines is the central point of the semicircular ruler bodies; the upper part of the back of the ruler is marked with length scale marks ranging from 0cm to 30cm, and the back of the ruler body in the vertical direction outside the length scale marks at the left end and the right end of the ruler is marked with a plurality of orientation lines which are parallel to each other and are equidistant.

Furthermore, each small grid of the angle scale mark is 1 degree, and the angle scale mark is marked by numbers every 10 degrees; each cell of the length scale lines is 2mm, and the length scale lines are marked with numbers every 1 cm.

Furthermore, an angle ruler marking line which traverses the ruler body is engraved in the middle of the back surface of the rectangular ruler body in the horizontal direction; and a ruler marking line which traverses the ruler body is engraved in the middle of the back of the ruler in the horizontal direction.

Furthermore, the scale lines, the numbers, the marked lines, the straight lines and the directional lines are all coated with colors.

Furthermore, the bottom surface of the rectangular ruler body of the angle ruler is provided with a chute which is used for penetrating through the ruler body in the left and right directions of the horizontal direction, the ruler body on the front side of the ruler is provided with a clamping groove which is used for penetrating through the ruler body in the left and right directions of the horizontal direction, and the clamping groove and the chute are meshed together after the ruler is inserted into the angle ruler.

Furthermore, inserting pieces are arranged at the left end and the right end of the ruler, the end faces of the inserting pieces are at least not higher than the groove bottom of the clamping groove, and the other three end faces of the inserting pieces are at least 0.5mm lower than the end face of the ruler body of the ruler; be equipped with the stopper on the inserted sheet, be equipped with the inserted sheet mounting hole in the block of stopper, the inserted sheet is fixed the stopper after inserting the inserted sheet mounting hole the both ends of ruler.

Furthermore, four counter bores communicated with the insert mounting holes are formed in the front face of the limiting block, and three directional lines are arranged between the left and right rows of counter bores; and a self-tapping screw penetrates through the counter bore and then fixes the limiting block on the inserting piece.

Furthermore, the bottom surface of the limiting block and the bottom surface of the ruler are positioned on the same horizontal plane.

Further, the transparent hard material is plastic.

The utility model has the advantages of it is following:

1. the utility model discloses constitute combination chi in to the angle square with the ruler cartridge, this combination chi uses portably, no longer need carry out loaded down with trivial details translation operation with two set-squares that have two rings of angle scale during the drawing course, the angle square that only needs to utilize this combination chi and ruler can be each other, the characteristic of relative translation, can conveniently carry out the course drawing operation in a flexible way, and the straight line directionality of drawing is clear and definite, and the precision is higher, and this combination chi is convenient for accomodate and carry.

2. The middle position of the back of the rectangular ruler body of the angle ruler in the horizontal direction is engraved with an angle ruler marking line which traverses the ruler body, the middle position of the back of the straight ruler in the horizontal direction is engraved with a straight ruler marking line which traverses the ruler body, and the two ruler marking lines are aligned during drawing, so that the straight ruler is positioned in the middle position of the angle ruler, thereby avoiding human errors to the maximum extent and improving the precision of chart operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a cross-sectional view E-E of fig. 1.

Fig. 4 is a front view of the angle ruler of fig. 1.

Fig. 5 is a side view of fig. 4.

Fig. 6 is a front view of the straightedge of fig. 1.

Fig. 7 is a side view of fig. 6.

Fig. 8 is a sectional view F-F of fig. 6.

Fig. 9 is a front view of the stop block of fig. 1.

Fig. 10 is a side view of fig. 9.

In the figure: 1. a limiting block; 1.1, an orientation line; 1.2, counter bores; 1.3, inserting sheet mounting holes; 2. an angle ruler; 2.1, center point; 2.2, angle scale lines; 2.3, marking by an angle ruler; 2.4, a chute; 3. a straightedge; 3.1, ruler scale marks; 3.2, marking with a straight ruler; 3.3, inserting sheets; 3.4, a clamping groove.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides a chart operation chi is used in teaching, as shown in figure 1, includes the class oval angle ruler 2 and the straight ruler 3 of linear type that make with transparent rigid plastic, and angle ruler 2 is a whole that two semicircular chi bodies constitute through the chi body connection of middle rectangle about two, but ruler 3 is along horizontal direction cartridge in the middle of the rectangle chi body and the horizontal slip in the rectangle chi body under the promotion of external force.

As shown in fig. 4, angle scale lines 2.2 from 0 to 360 degrees are clockwise etched on the back of the semicircular ruler bodies of the upper part and the lower part of the angle ruler 2 along the circumferential direction, each small lattice is 1 degree, wherein the 0 degree scale is etched in the middle of the top of the semicircular ruler body, and the angle scale lines 2.2 at intervals of 10 degrees are marked by numbers; two straight lines which are vertically crossed are etched at the circle center of the back of each semicircular ruler body, and the cross position of the two straight lines is the central point 2.1 of the semicircular ruler body; an angle ruler marking 2.3 which traverses the ruler body is etched at the middle position of the back surface of the rectangular ruler body in the horizontal direction.

As shown in fig. 6, the upper part of the back of the straight edge 3 is etched with scale marks with the length of 0-30cm, wherein each small cell is 2mm, and the lower part of the scale marks is marked with numbers every 1 cm; a ruler marking 3.2 which traverses the ruler body is etched in the middle of the back of the ruler 3 in the horizontal direction, and the projection of the angle ruler marking 2.3 and the ruler marking 3.2 need to be superposed together during drawing; three mutually parallel and equidistant directional lines 1.1 are etched on the back of the ruler body in the vertical direction outside the length scale marks on the back of the ruler body at the left end and the right end of the ruler 3.

In order to facilitate the observation of the scale by the chart operator, all scale lines, numbers, marked lines, straight lines and orientation lines 1.1 are colored with black pigment.

As a preferred embodiment, as shown in fig. 5, the bottom surface of the rectangular ruler body of the angle ruler 2 is provided with a chute 2.4 which penetrates through the ruler body in the left and right horizontal direction; as shown in fig. 8, the ruler body on the front side of the straight ruler 3 is provided with a clamping groove 3.4 which penetrates through the ruler body in the horizontal direction and is matched with the sliding groove 2.4, when the straight ruler 3 is inserted into the rectangular ruler body of the angle ruler 2, the clamping groove 3.4 and the sliding groove 2.4 are meshed together, and the fact that the displacement of the straight ruler 3 relative to the angle ruler 2 can only be in the horizontal direction and cannot slip is ensured.

As a preferred embodiment, as shown in fig. 6 and 7, the left end and the right end of the straight ruler 3 are provided with the inserting pieces 3.3, and the front end surfaces of the inserting pieces 3.3 are at least not higher than the groove bottom of the clamping groove 3.4, so that the straight ruler 3 can be smoothly inserted into the rectangular ruler body of the angle ruler 2; the end surfaces of the other three ends are at least 0.5mm lower than the end surface of the ruler body; a limiting block 1 shown in figures 9 and 10 is arranged on the inserting piece 3.3, an inserting piece mounting hole 1.3 is arranged in a block body of the limiting block 1, four counter bores 1.2 communicated with the inserting piece mounting hole 1.3 are arranged on the front surface of the limiting block 1, and three directional lines 1.1 are arranged between the left counter bore 1.2 and the right counter bore 1.2; when the limiting block 1 is installed, the inserting piece 3.3 is inserted into the inserting piece installing hole 1.3, the ruler body protrudes out of the end face of the inserting piece 3.3 to block the shoulder part of the limiting block 1, the inner sides of the left limiting block 1 and the right limiting block 1 are positioned at the position of '0' and the position of '30' of the ruler body, and finally, the limiting block 1 is fixed on the inserting piece 3.3 after a self-tapping nail penetrates through the counter bore 1.2.

As a preferred embodiment, as shown in fig. 2, the bottom surface of the limiting block 1 and the bottom surface of the straight edge 3 are located on a horizontal plane, so that the bottom surface of the straight edge 3 is attached to the paper surface of the drawing, and the drawing precision of the drawing is improved.

The use method of the utility model is as follows

1. The centre point 2.1 above (desired angle is 0-90, 270-360) or below (desired angle is 90-270) the angle scale 2 coincides with the ship's position.

2. Keeping the center point 2.1 coincident with the ship's position, rotating the combination ruler, and sliding the straightedge 3 in the angle ruler 2, so that any orientation line 1.1 at either end of the straightedge 3 coincides with a meridian on the chart.

3. And confirming that the angle scale mark line 2.3 is superposed with the straight scale mark line 3.2, and marking a point outside the angle scale mark line 2.2 corresponding to the required angle.

4. The straight scale 3 is used to connect the ship position point with the mark point, and the straight line is the planned course line.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims

1. The utility model provides a chart operation chi is used in teaching which characterized in that: the angle ruler comprises an oval-like angle ruler (2) made of transparent hard materials, wherein the angle ruler (2) is formed by connecting an upper semicircular ruler body and a lower semicircular ruler body through a middle rectangular ruler body into a whole, the rectangular ruler body is movably inserted with a straight ruler (3) along the horizontal direction, angle scale marks (2.2) from 0 degrees to 360 degrees are clockwise carved on the back surfaces of the two semicircular ruler bodies along the circumferential direction, the 0-degree scale mark is carved in the middle of the top of the upper semicircular ruler body, two straight lines which are vertically crossed are carved on the circle center of the back surface of the semicircular ruler body, and the cross position of the two straight lines is the central point (2.1) of the semicircular ruler body; the ruler is characterized in that length scale marks ranging from 0cm to 30cm are marked on the upper portion of the back of the ruler body (3), and a plurality of mutually parallel and equidistant directional lines (1.1) are marked on the back of the ruler body in the vertical direction outside the length scale marks at the left end and the right end of the ruler body (3).

2. The chart work ruler for teaching as claimed in claim 1, wherein: each small grid of the angle scale lines (2.2) is 1 degree, and the angles are marked by numbers every 10 degrees; each cell of the length scale lines is 2mm, and the length scale lines are marked with numbers every 1 cm.

3. The chart work ruler for teaching as claimed in claim 1, wherein: an angle ruler marking line (2.3) which traverses the ruler body is engraved in the middle of the back surface of the rectangular ruler body in the horizontal direction; a ruler marking (3.2) which traverses the ruler body is engraved in the middle of the back of the ruler (3) in the horizontal direction.

4. The chart work ruler for teaching according to any one of claims 1 to 3, characterized in that: the scale lines, the numbers, the marked lines, the straight lines and the directional lines (1.1) are all coated with colors.

5. The chart work ruler for teaching as claimed in claim 1, wherein: be equipped with spout (2.4) that link up the chi body about the horizontal direction on the bottom surface of the rectangular ruler body of angle square (2), be equipped with draw-in groove (3.4) that link up the chi body about the horizontal direction on the positive chi body of ruler (3), ruler (3) cartridge back in angle square (2) draw-in groove (3.4) and spout (2.4) interlock are in the same place.

6. The chart work ruler for teaching as claimed in claim 1, wherein: the left end and the right end of the ruler (3) are provided with inserting pieces (3.3), the end faces of the inserting pieces (3.3) are at least not higher than the groove bottom of the clamping groove (3.4), and the other three end faces of the inserting pieces (3.3) are at least lower than the end face of the ruler body of the ruler (3) by more than 0.5 mm; stopper (1) is equipped with on inserted sheet (3.3), be equipped with inserted sheet mounting hole (1.3) in the block of stopper (1), inserted sheet (3.3) are fixed stopper (1) after inserting inserted sheet mounting hole (1.3) the both ends of ruler (3).

7. The chart operation ruler for teaching as claimed in claim 6, wherein: the front surface of the limiting block (1) is provided with four counter bores (1.2) communicated with the insert mounting holes (1.3), and three directional lines (1.1) are arranged between the left and right columns of counter bores (1.2); and a self-tapping screw penetrates through the counter bore (1.2) and then fixes the limiting block (1) on the inserting sheet (3.3).

8. The chart operation ruler for teaching as claimed in claim 6, wherein: the bottom surface of the limiting block (1) and the bottom surface of the ruler (3) are positioned on the same horizontal plane.

9. The chart working ruler for teaching according to claim 1, characterized in that: the transparent hard material is plastic.