CN214215306U

CN214215306U - Drawing rule for applied mathematics teaching

Info

Publication number: CN214215306U
Application number: CN202120086745.XU
Authority: CN
Inventors: 付彩霞
Original assignee: Xian International University
Current assignee: Xian International University
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-09-17
Anticipated expiration: 2031-01-13

Abstract

The utility model discloses a drawing rule for using among mathematical education, including the fixed plate, seted up on the fixed plate and changeed the hole, changeed the downthehole rotation and installed the rotary column, installed the loop bar between the rotary column, the tip that is equipped with smooth chamber and loop bar in the loop bar has seted up the perforation, and sliding sleeve is equipped with the limiting plate in the smooth chamber, and the limiting plate facial make-up is equipped with the connecting rod, and the connecting rod runs through in the perforation, and perforates and be sliding fit with the connecting rod, and the connecting rod facial make-up is equipped with the sleeve, and the built. Can surround the rotary column through the loop bar rotatory, make things convenient for the graphics primitive to draw a circle, again because the limiting plate can slide in sliding cavity, can extend the connecting rod in the perforation, conveniently adjust connecting rod and telescopic whole length, alternate the fixed pin in screw and fixed orifices again, through fixed pin and screw thread fit, make the fixed pin alternate in the fixed orifices of connecting rod to can fix the connecting rod, be convenient for adjust according to the diameter of circle.

Description

Drawing rule for applied mathematics teaching

Technical Field

The utility model belongs to the technical field of teaching tool, concretely relates to drawing rule for use in mathematical education.

Background

In the teaching process, the teacher usually needs to write and draw on the blackboard, and the word is directly written with the chalk, and the drawing needs to be drawn with the instrument, and general drawing worker has: ruler, set-square and protractor etc. the protractor is semi-circular structure, and the edge marks the angle, can measure the angle, can also draw pitch arc, circle and sharp, and the straight line can be drawn to the ruler, can draw right angled triangle and sharp etc. the set-square generally is isosceles right triangle structure or 30 and 60 degrees right angled triangle structure, can draw isosceles right triangle, 30 degrees and 60 degrees right angled triangle and sharp etc. need draw different angles sometimes, only the protractor is drawn.

Present a drawing rule for using in mathematical education all is independent and fixed structure, and every drawing rule all has respective effect, and often the teacher need take a plurality of teaching rules when teaching, need change different teaching rules when need draw different pictures in addition, leads to the teacher to need frequently change the apparatus, influences the use continuity of drawing, and inconvenient use tool draws the circle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drawing rule for using in mathematical education to solve the current inconvenient problem of drawing rule that is used for using in mathematical education.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a drawing rule for using in mathematical education, includes the fixed plate, the hole has been seted up on the fixed plate, the rotary column has been installed to the downthehole rotation of commentaries on classics, the loop bar has been installed between the rotary column, the tip that is equipped with smooth chamber and loop bar in the loop bar has seted up the perforation, sliding sleeve is equipped with the limiting plate in the smooth chamber, the limiting plate facial make-up is equipped with the connecting rod, the connecting rod runs through in the perforation, and the perforation is sliding fit with the connecting rod, the connecting rod facial make-up is equipped with the sleeve, the built-in chalk that is equipped with of sleeve.

Preferably, the connecting rod is provided with a connecting hole, and a sleeve is screwed in the connecting hole.

Preferably, the connecting rod is provided with a fixing hole, the loop bar is provided with a screw hole, the fixing hole and the screw hole are internally inserted with a fixing pin, and the screw hole is in threaded connection with the fixing pin.

Preferably, the rotating hole is internally sleeved with a bearing, the bearing is internally sleeved with a rotating column, and the fixing plate is provided with a protractor.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a drawing rule for using among mathematical education, compare with prior art, rotation effect through the bearing, let the rotary column can be at the downthehole internal rotation of commentaries on classics, it is rotatory to make things convenient for the plotter to draw a circle for the loop bar can be around the rotary column, again because the limiting plate can slide in the sliding cavity of loop bar, can extend the connecting rod in the perforation, conveniently adjust connecting rod and telescopic whole length, alternate the fixed pin in screw and fixed orifices again, through fixed pin and screw thread fit, make the fixed pin alternate in the fixed orifices of connecting rod, thereby can fix the connecting rod, the plotter of being convenient for adjusts according to the diameter of circle.

Drawings

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

fig. 2 is a right-side schematic view of the present invention;

fig. 3 is a schematic view of the structure of the present invention;

fig. 4 is a schematic view of the structure of the right side of the present invention.

In the figure: the device comprises a fixing plate 1, a rotating hole 2, a rotating column 3, a sleeve rod 4, a sliding cavity 5, a through hole 6, a limiting plate 7, a connecting rod 8, a sleeve 9, a connecting hole 10, a fixing hole 11, a screw hole 12, a fixing pin 13, a bearing 14, a protractor 15 and chalk 16.

Detailed Description

The technical solution 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.

Referring to fig. 1, 2, 3 and 4, a drawing ruler for applying mathematical education comprises a fixing plate 1, the fixing plate 1 is a square plate and 2 rotating holes 2 are formed in the fixing plate 1, the rotating holes 2 are circular holes and are located at the middle position, bearings 14 are sleeved in the rotating holes 2, the outer walls of the bearings 14 are in interference fit with the inner walls of the rotating holes 2, rotating columns 3 are sleeved in the bearings 14, the outer walls of the rotating columns 3 are in interference fit with the inner walls of the bearings 14, the rotating columns 3 are cylindrical rods and 2, sleeve rods 4 are welded between the rotating columns 3, the sleeve rods 4 are square rods, sliding cavities 5 are arranged in the sleeve rods 4, the sliding cavities 5 are square cavities, the right ends of the sleeve rods 4 are provided with through holes 6, the through holes 6 are square holes and are located at the middle position, limiting plates 7 are slidably sleeved in the sliding cavities 5, the limiting plates 7 are square plates, and connecting rods 8 are welded to the right ends of the limiting plates 7, connecting rod 8 is square pole, connecting rod 8 runs through in perforation 6 and perforation 6 is sliding fit with connecting rod 8, connecting hole 10 has been seted up to connecting rod 8's right-hand member, connecting hole 10 is the screw hole, be located the intermediate position, the spiro union has sleeve 9 in the connecting hole 10, sleeve 9 is a tubulose section of thick bamboo, sleeve 9 endotheca is equipped with chalk 16, rotation effect through bearing 14, let rotary column 3 can be in 2 internal rotations in the rotary hole, make loop bar 4 can center around rotary column 3 rotatory, make things convenient for the drawing personnel to draw the circle, because limiting plate 7 can slide in sliding cavity 5 of loop bar 4 again, can extend perforation 6 interior connecting rod 8, make things convenient for adjustment connecting rod 8 and sleeve 9's overall length, the drawing personnel of being convenient for adjust according to the diameter of circle.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fixing hole 11 has evenly been seted up on the preceding terminal surface of connecting rod 8, fixing hole 11 is the circular port, be located the intermediate position, quantity is 9, screw 12 has been seted up on the terminal surface before the right side of loop bar 4, screw 12 is located the intermediate position, screw 12 is in the top of fixing hole 11, screw 12 and fixing hole 11 interlude have fixed pin 13, be equipped with the screw thread on the fixed pin 13, alternate fixed pin 13 in screw 12 and fixing hole 11, through fixed pin 13 and screw 12 screw-thread fit, make fixed pin 13 alternate in connecting rod 8's fixing hole 11, thereby can fix connecting rod 8, the upper end welded connection of fixed plate 1 has protractor 15, pass through protractor 15 and make things convenient for the graphics drafter to draw the contained angle of different angles.

During the implementation, the effect of rotation through bearing 14, let the rotary column 3 can be at 2 internal rotations in the commentaries on classics hole, make loop bar 4 can surround rotary column 3 rotatoryly, make things convenient for the drawing personnel to draw the circle, again because limiting plate 7 can slide in loop bar 4's smooth chamber 5, can extend the connecting rod 8 in the perforation 6, conveniently adjust the whole length of connecting rod 8 and sleeve 9, alternate fixed pin 13 in screw 12 and fixed orifices 11, through fixed pin 13 and the 12 screw-thread fit of screw, make fixed pin 13 alternate in the fixed orifices 11 of connecting rod 8, thereby can fix connecting rod 8 and draw, the drawing personnel of being convenient for adjust according to the diameter of circle, solve the current inconvenient problem of the drawing rule that is used for in the applied mathematics teaching.

Claims

1. A drawing rule for use in applied mathematics teaching, comprising a fixing plate (1), characterized in that: the chalk box is characterized in that a rotary hole (2) is formed in the fixing plate (1), a rotary column (3) is installed in the rotary hole (2), a sleeve rod (4) is installed between the rotary columns (3), a sliding cavity (5) and a through hole (6) are formed in the end portion of the sleeve rod (4) in the sleeve rod (4), a limiting plate (7) is sleeved in the sliding cavity (5), a connecting rod (8) is installed on the limiting plate (7), the connecting rod (8) penetrates through the through hole (6), the through hole (6) and the connecting rod (8) are in sliding fit, a sleeve (9) is installed on the connecting rod (8), and chalk (16) is installed in the sleeve (9).

2. A drawing rule for use in applied mathematics teaching as claimed in claim 1, wherein: the connecting rod (8) is provided with a connecting hole (10), and a sleeve (9) is screwed in the connecting hole (10).

3. A drawing rule for use in applied mathematics teaching as claimed in claim 2, wherein: the connecting rod (8) is provided with a fixing hole (11), the loop bar (4) is provided with a screw hole (12), the fixing hole (11) and the screw hole (12) are internally inserted with a fixing pin (13), and the screw hole (12) is in threaded connection with the fixing pin (13).

4. A drawing rule for use in applied mathematics teaching as claimed in claim 1, wherein: the rotary hole (2) is sleeved with a bearing (14), the bearing (14) is sleeved with a rotary column (3), and the fixed plate (1) is provided with a protractor (15).