CN114834185A

CN114834185A - Cycloid demonstration teaching aid for advanced math teaching

Info

Publication number: CN114834185A
Application number: CN202210298527.1A
Authority: CN
Inventors: 王广
Original assignee: Weifang University of Science and Technology
Current assignee: Weifang University of Science and Technology
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-02

Abstract

The invention provides a cycloid demonstration teaching aid for advanced math teaching, and belongs to the technical field of teaching aids. This cycloid demonstration teaching aid for advanced math teaching, which comprises a mainboard, the mainboard both sides are all fixed and are provided with the bracing piece, two the spout has all been seted up by upper end department to one side that the bracing piece is relative, two the inside of spout all slides and is provided with the slider, two fixed diaphragm, two of being provided with between the slider lean on the fixed horizontal pole that is provided with of upper end department between the bracing piece, the draw-in groove has been seted up to horizontal pole front side center department, the inside of draw-in groove slides and is provided with the fixture block, the fixed telescopic link that is provided with in front end of fixture block, the fixed dust proof block that is provided with of lower extreme of telescopic link, the fixed cover in inside of dust proof block is equipped with the bearing, the fixed cover in inside of bearing is equipped with the dwang. The invention provides a cycloid demonstration teaching aid for advanced mathematics teaching, which is convenient to operate, accurate in drawing and high in practicability.

Description

Cycloid demonstration teaching aid for advanced math teaching

Technical Field

The invention relates to the technical field of teaching aids, in particular to a cycloid demonstration teaching aid for advanced mathematics teaching.

Background

The teaching aid is in order to propagate science and technology, educate the material object of people as the purpose, is complete science and technology media, is indispensable equipment among teenagers' science and technology activity, and the teaching aid that uses has material object teaching aid and replica teaching aid among the science and technology activity, specifically has the sample or the sample that come from the nature: such as biological specimens, mineral specimens, fossil, rock and rare animal samples used in scientific and technical education activities, and imitation and model of specimens: some samples are precious (such as Beijing ape skull fossils) and are not suitable for being spread everywhere, so people make various imitations and models for spreading scientific and technical information, and also can be divided into two types for demonstration and practice operation, such as models for human anatomy models, navigation models, sea models and vehicle models.

Cycloids, also called trochoid lines and cycloidal lines, are defined as trajectories formed by a certain point on the boundary of a circle when the circle moves along a straight line in mathematics, which is one of general trochoid lines, and most teachers in advanced mathematics class simply draw cycloids through a set square, a straight ruler and the like, and the drawing method is not only troublesome and time-consuming, but also inaccurate.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a cycloid demonstration teaching aid for advanced mathematics teaching, which solves the problems of troublesome drawing cycloid and inaccurate drawing.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a cycloid demonstration teaching aid for advanced math teaching comprises a main board, wherein two supporting rods are fixedly arranged on two sides of the main board, sliding grooves are formed in the two opposite sides of the supporting rods by the upper ends, sliding blocks are arranged in the two sliding grooves in a sliding mode, a transverse plate is fixedly arranged between the two sliding blocks, a transverse rod is fixedly arranged between the two supporting rods by the upper ends, a clamping groove is formed in the center of the front side of the transverse rod, a clamping block is arranged in the clamping groove in a sliding mode, a telescopic rod is fixedly arranged at the front end of the clamping block, a dust-proof block is fixedly arranged at the lower end of the telescopic rod, a bearing is fixedly sleeved in the dust-proof block, a rotating rod is fixedly sleeved in the bearing, a circular ring is fixedly arranged at the rear end of the rotating rod, a threaded hole is formed in the front side of the circular ring by the lower end, and a threaded pipe is sleeved in the threaded hole, a clamping ring is fixedly arranged at the rear end of the threaded pipe;

the bottom surface of the main board is provided with an electromagnet and a storage battery by two sides respectively, a limiting hole is formed in the center of the front side of the transverse plate, limiting grooves are formed in the top surface and the center of the bottom surface of each limiting hole, limiting blocks are arranged in the limiting grooves in a sliding mode, pen caps are fixedly arranged between the limiting blocks, pull grooves are formed in the center of the inner wall of one side of each limiting hole, spring seats are fixedly arranged on the top surface and the center of the bottom surface of each pull groove, pull rods are connected between the spring seats in a rotating mode, pull ropes are fixedly arranged on the rods of the pull rods, and one ends, far away from the pull rods, of the pull ropes are fixedly arranged on the pen caps.

Preferably, the fixed spring that is provided with No. two of front side inner wall center department of screwed pipe, the rear end of No. two springs is fixed and is provided with No. two slippery fellows, stable groove has all been seted up to snap ring top surface and bottom surface center department, is located the inside activity of screwed pipe of No. two slippery fellows rear end is provided with the chalk No. one, the rear end of chalk runs through the rear side that the snap ring leads to the snap ring, two the spring that is provided with is all fixed in one side inner wall center department that stable groove is relative, two the one end that the spring is relative all fixed and is provided with slippery fellow, two one side center department that the slippery fellow is relative all fixed and is provided with the kelly, two stable groove is close to the opening part and all fixedly is provided with the spacing ring.

Preferably, the electromagnet is electrically connected with the storage battery.

Preferably, the second-size chalk is movably sleeved inside the pen cap.

Preferably, the upper end face of diaphragm is fixed and is provided with the backing plate, the fixed cover of being equipped with the lantern ring on the ring body of ring, backing plate and lantern ring all are made by rubber materials.

Preferably, the front side of the transverse plate close to the upper end is fixedly provided with scale marks.

Preferably, the main plate is provided in a rectangular shape.

Preferably, the transverse plate is located at the lower end of the transverse rod and located at the upper end of the main plate.

The working principle is as follows: when the blackboard eraser is used, the electromagnet is started, the mainboard is adsorbed on the blackboard through the suction force of the electromagnet, then the transverse plate is upwards pushed, the pen sleeve is pulled to enable the second chalk to draw a straight line on the blackboard after the transverse plate moves to a proper position, then the pen sleeve is not touched, the spring seat drives the pull rod to rotate and restore the original position after the pen sleeve loses the pulling force, the pull rod rotates to roll the stay cord, the stay cord is shortened to pull the pen sleeve back to the original position, the second chalk can draw a straight line again, then the transverse plate is descended, the transverse plate is returned, then the telescopic rod is pushed, the clamping block slides in the clamping groove, meanwhile, the circular ring rolls on the base plate through the lantern ring, therefore, the cycloid can be drawn by the first chalk, the blackboard eraser is simple in operation, and the drawing is accurate.

(III) advantageous effects

The invention provides a cycloid demonstration teaching aid for advanced mathematics teaching. The method has the following beneficial effects:

1. the invention provides a cycloid demonstration teaching aid for advanced mathematics teaching, which can enable a main board to be adsorbed on a blackboard through an electromagnet when in use, so that the device is more stable before drawing cycloid.

2. The invention provides a cycloid demonstration teaching aid for advanced mathematics teaching, which can draw straight lines on a blackboard through a second chalk on a pen cap when in use, and automatically thicken the drawn lines after the second chalk draws one straight line through the revolving force of a spring seat, so that the drawn lines are clearer and the operation is very simple.

3. The invention provides a cycloid demonstration teaching aid for advanced mathematics teaching, which enables a first chalk to be more stable through a clamping rod when in use, and enables the first chalk to be clearer when drawing through a slight driving force exerted on the first chalk by a second spring.

4. The invention provides a cycloid demonstration teaching aid for advanced mathematics teaching, which can adjust the height of a transverse plate through sliding of a sliding block in a sliding groove, so that a transverse line for drawing is aligned with a cycloid conveniently, meanwhile, a clamping block slides in a clamping groove, so that a circular ring is drawn to rotate, and friction force is increased through a base plate and a lantern ring, so that the circular ring can be effectively prevented from slipping, and the cycloid demonstration teaching aid is more convenient to use and can draw quickly and accurately.

Drawings

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

FIG. 2 is a schematic side cross-sectional view of a threaded pipe of the present invention;

FIG. 3 is a schematic front cross-sectional view of a cross-plate of the present invention;

FIG. 4 is a schematic front view of the present invention;

FIG. 5 is a schematic side view of the present invention;

fig. 6 is a schematic structural view of the main body of the telescopic rod of the present invention.

Wherein, 1, a support rod; 2. a slider; 3. a chute; 4. a card slot; 5. a clamping block; 6. a telescopic rod; 7. a bearing; 8. a cross bar; 9. a transverse plate; 10. a limiting hole; 11. a main board; 12. an electromagnet; 13. rotating the rod; 14. a storage battery; 15. a dust-proof block; 16. a base plate; 17. groove drawing; 18. a pull rod; 19. a spring seat; 20. pulling a rope; 21. a threaded pipe; 22. a limiting groove; 23. a pen cap; 24. a limiting block; 25. a first chalk; 26. a snap ring; 27. a stabilizing slot; 28. a limiting ring; 29. a first slider; 30. a first spring; 31. a clamping rod; 32. a second sliding head; 33. a second spring; 34. a circular ring; 35. a threaded hole; 36. a collar; 37. scale marks; 38. second size chalk.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1-6, the embodiment of the invention provides a cycloid demonstration teaching aid for advanced math teaching, which comprises a main board 11, wherein two sides of the main board 11 are both fixedly provided with support rods 1, one side of each of the two support rods 1, which is opposite to the upper end, is provided with a chute 3, the insides of the two chutes 3 are both slidably provided with sliders 2, a transverse plate 9 is fixedly arranged between the two sliders 2, a cross rod 8 is fixedly arranged between the two support rods 1, which is close to the upper end, the center of the front side of the cross rod 8 is provided with a clamping groove 4, the inside of the clamping groove 4 is slidably provided with a clamping block 5, the front end of the clamping block 5 is fixedly provided with a telescopic rod 6, the telescopic rod 6 is conveniently matched with the movement of the transverse plate 9 through the expansion and contraction of the telescopic rod 6, the lower end of the telescopic rod 6 is fixedly provided with a dustproof block 15, the inside of the dustproof block 15 is fixedly sleeved with a bearing 7, the ring 34 is more conveniently rotated through the bearing 7, the inside of the bearing 7 is fixedly sleeved with a rotating rod 13, the rear end of dwang 13 is fixed and is provided with ring 34, and ring 34 front side is by lower extreme department set up threaded hole 35, can change screwed pipe 21 at will through threaded hole 35 for the device is more durable, and the inside thread cover of threaded hole 35 is equipped with screwed pipe 21, and the rear end of screwed pipe 21 is fixed and is provided with snap ring 26.

Mainboard 11 bottom surface leans on both sides department to fix respectively and is provided with electro-magnet 12 and battery 14, spacing hole 10 has been seted up in the front side center department of diaphragm 9, spacing groove 22 has all been seted up in the top surface and the bottom surface center department of spacing hole 10, the inside of two spacing grooves 22 all slides and is provided with stopper 24, slide in spacing groove 22 through stopper 24, make the pen socket 23 more stable, fixedly between two stoppers 24 be provided with pen socket 23, spacing hole 10 one side inner wall center department has seted up the kerve 17, the top surface and the bottom surface center department of kerve 17 all fixedly are provided with spring seat 19, it is connected with pull rod 18 to rotate between two spring seats 19, the pole body of pull rod 18 is fixed and is provided with stay cord 20, the one end that pull rod 18 was kept away from to stay cord 20 is fixed to be set up on pen socket 23.

A second spring 33 is fixedly arranged at the center of the inner wall of the front side of the threaded pipe 21, a second sliding head 32 is pushed by the elasticity of the second spring 33 to enable lines drawn by the first chalk 25 to be clearer, a second sliding head 32 is fixedly arranged at the rear end of the second spring 33, stabilizing grooves 27 are formed in the centers of the top surface and the bottom surface of the clamping ring 26, the first chalk 25 is movably arranged in the threaded pipe 21 at the rear end of the second sliding head 32, the rear end of the first chalk 25 penetrates through the clamping ring 26 and is communicated with the rear side of the clamping ring 26, a first spring 30 is fixedly arranged at the center of the inner wall of one side, opposite to the two stabilizing grooves 27, of the first sliding head 29, a clamping rod 31 is pushed by the elasticity of the first spring 30 to clamp the first chalk 25, the first chalk 25 is enabled to be more stable, a first sliding head 29 is fixedly arranged at one end, opposite to the two first springs 30, a clamping rod 31 is fixedly arranged at the center of one side, opposite to the two sliding heads 29, and a limiting ring 28 is fixedly arranged on each of the two stabilizing grooves 27 close to the opening, and the limiting ring 28 is used for limiting a first sliding head 29.

Electro-magnet 12 and battery 14 electric connection, the inside movable sleeve of pen socket 23 is equipped with No. two chalk 38, No. two chalk 38 is used for drawing the straight line, the fixed backing plate 16 that is provided with of up end of diaphragm 9, the fixed cover of ring 34 is equipped with lantern ring 36 on the ring body, backing plate 16 and lantern ring 36 are all made by rubber materials, rubber materials has higher frictional force, thereby effectually prevent that ring 34 from skidding, diaphragm 9 front side is by the fixed scale mark 37 that is provided with of upper end department, conveniently observe the length of drawing the line through scale mark 37, mainboard 11 sets rectangular shape, diaphragm 9 is located the lower extreme of horizontal pole 8, diaphragm 9 is located the upper end of mainboard 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cycloid demonstration teaching aid for advanced math teaching, includes mainboard (11), its characterized in that: the dust-proof device is characterized in that supporting rods (1) are fixedly arranged on two sides of the main board (11), two sliding grooves (3) are formed in one side, opposite to the supporting rods (1), of the two supporting rods by the upper end, sliding blocks (2) are arranged in the sliding grooves (3) in a sliding mode, transverse plates (9) are fixedly arranged between the two sliding blocks (2), a transverse rod (8) is fixedly arranged between the two supporting rods (1) by the upper end, a clamping groove (4) is formed in the center of the front side of the transverse rod (8), clamping blocks (5) are arranged in the clamping groove (4) in a sliding mode, a telescopic rod (6) is fixedly arranged at the front ends of the clamping blocks (5), dust-proof blocks (15) are fixedly arranged at the lower ends of the telescopic rods (6), bearings (7) are fixedly sleeved in the dust-proof blocks (15), rotating rods (13) are fixedly sleeved in the bearings (7), circular rings (34) are fixedly arranged at the rear ends of the rotating rods (13), a threaded hole (35) is formed in the front side of the circular ring (34) close to the lower end, a threaded pipe (21) is sleeved in the threaded hole (35) in a threaded manner, and a clamping ring (26) is fixedly arranged at the rear end of the threaded pipe (21);

an electromagnet (12) and a storage battery (14) are respectively and fixedly arranged at the bottom surface of the main board (11) close to the two sides, a limiting hole (10) is arranged at the center of the front side of the transverse plate (9), limiting grooves (22) are respectively arranged at the centers of the top surface and the bottom surface of the limiting hole (10), limiting blocks (24) are respectively arranged in the two limiting grooves (22) in a sliding manner, a pen cap (23) is fixedly arranged between the two limiting blocks (24), a pull groove (17) is formed in the center of the inner wall of one side of the limiting hole (10), spring seats (19) are fixedly arranged in the centers of the top surface and the bottom surface of the pull groove (17), a pull rod (18) is rotatably connected between the two spring seats (19), a pull rope (20) is fixedly arranged on the rod body of the pull rod (18), and one end, far away from the pull rod (18), of the pull rope (20) is fixedly arranged on a pen cap (23).

2. The cycloid demonstration teaching aid for higher mathematics teaching of claim 1, characterized in that: a second spring (33) is fixedly arranged at the center of the inner wall of the front side of the threaded pipe (21), a second sliding head (32) is fixedly arranged at the rear end of the second spring (33), stabilizing grooves (27) are respectively formed in the centers of the top surface and the bottom surface of the snap ring (26), a first chalk (25) is movably arranged in a threaded pipe (21) positioned at the rear end of the second sliding head (32), the rear end of a chalk (25) runs through snap ring (26) and leads to the rear side of snap ring (26), two one side inner wall center department that stable groove (27) is relative all fixes and is provided with a spring (30), two one end that spring (30) is relative all fixes and is provided with slider (29), two one side center department that slider (29) is relative all fixes and is provided with kelly (31), two stable groove (27) are close to opening part and all fix and are provided with spacing ring (28).

3. The cycloid demonstration teaching aid for higher mathematics teaching of claim 1, characterized in that: the electromagnet (12) is electrically connected with the storage battery (14).

4. The cycloid demonstration teaching aid for higher mathematics teaching of claim 1, characterized in that: the second chalk (38) is movably sleeved in the pen sleeve (23).

5. The cycloid demonstration teaching aid for higher mathematics teaching of claim 1, characterized in that: the upper end face of diaphragm (9) is fixed and is provided with backing plate (16), the fixed cover is equipped with lantern ring (36) on the ring body of ring (34), backing plate (16) and lantern ring (36) are all made by rubber materials.

6. The cycloid demonstration teaching aid for higher mathematics teaching of claim 1, characterized in that: and the front side of the transverse plate (9) close to the upper end is fixedly provided with scale marks (37).

7. The cycloid demonstration teaching aid for advanced mathematics teaching of claim 1 is characterized in that: the main plate (11) is provided in a rectangular shape.

8. The cycloid demonstration teaching aid for higher mathematics teaching of claim 1, characterized in that: the transverse plate (9) is located at the lower end of the transverse rod (8), and the transverse plate (9) is located at the upper end of the main plate (11).