CN211181321U

CN211181321U - Mathematics teaching is with supplementary teaching device

Info

Publication number: CN211181321U
Application number: CN202020118232.8U
Authority: CN
Inventors: 李丹丹
Original assignee: Henan College of Industry and Information Technology
Current assignee: Henan College of Industry and Information Technology
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-08-04
Anticipated expiration: 2030-01-18

Abstract

The utility model belongs to the technical field of the mathematical education instrument, a supplementary teaching device is used in mathematical education is disclosed, including rack and gear, rack and gear mesh mutually, the gear passes through U type groove sliding connection on the rack, U type inslot bottom is equipped with the gyro wheel, the gyro wheel is including four, U type inslot bottom four corners is located respectively to four gyro wheels, the rack bottom be equipped with gyro wheel assorted spout, both sides are equipped with first bull stick and second bull stick respectively around the U type groove, first bull stick and second bull stick all with the perpendicular fixed connection of gear shaft, be equipped with the handle on the first bull stick, the setting of first bull stick of handle perpendicular to, be equipped with the through-hole on the second bull stick, rack bottom both ends are equipped with the landing leg, the landing leg bottom is equipped with the slipmat. The device can draw the cycloid, makes the motion trail of the circle on the straight line clear at a glance, is convenient for students to understand, and has simple and effective structure, convenient use and high popularization value.

Description

Mathematics teaching is with supplementary teaching device

Technical Field

The utility model belongs to the technical field of the mathematical education instrument, concretely relates to mathematics teaching is with supplementary teaching device.

Background

In the advanced mathematics teaching, special curves such as cycloid curve are included, a circle rolls along a straight line, the track passed by a fixed point on the circle is called cycloid, at present, no teaching aid suitable for demonstrating cycloid formation is available, understanding of the cycloid by students is not facilitated, and inconvenience is brought to cycloid teaching.

SUMMERY OF THE UTILITY MODEL

To the above situation, the utility model aims at providing a mathematics teaching is with supplementary teaching device. Through reasonable structure setting, draw the cycloid, make the motion trajectory of circle on the straight line surveyability, the student of being convenient for understands, simple structure is effective simultaneously, and convenient to use has very high spreading value.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a mathematics teaching is with supplementary teaching device, includes rack and gear, the rack meshes with the gear mutually, the gear passes through U type groove sliding connection on the rack, U type inslot bottom is equipped with the gyro wheel, the gyro wheel is including four, four U type inslot bottom four corners is located respectively to the gyro wheel. In the four idler wheels, two parallel idler wheels are connected through a rotating shaft, and the rotating shafts on one sides of the four idler wheels, which are close to the side walls of the U-shaped groove, are all connected with the side walls of the U-shaped groove in a rotating mode. And a sliding groove matched with the roller is arranged at the bottom of the rack. The structure can lead the gear to stably walk on the rack. The U-shaped groove is characterized in that a first rotating rod and a second rotating rod are arranged on the front side and the rear side of the U-shaped groove respectively, the first rotating rod and the second rotating rod are fixedly connected with the gear rotating shaft in a perpendicular mode, a handle is arranged on the first rotating rod, the handle is perpendicular to the first rotating rod, and a through hole is formed in the second rotating rod. The first rotating rod and the second rotating rod on two sides of the U-shaped groove are both vertically and fixedly connected with the gear rotating shaft, so that when the gear walks on the rack, the first rotating rod and the second rotating rod can rotate along with the gear rotating shaft. The handle is arranged on the first rotating rod, the handle can be held by a hand during use, the first rotating rod is rotated, the gear is enabled to walk on the rack, the second rotating rod rotates along with the gear, the through hole is formed in the second rotating rod, a painting brush with the diameter matched with the through hole can be placed in the through hole, and the painting brush can draw a moving track, namely a cycloid, of the through hole on a corresponding drawing board. The rack is characterized in that supporting legs are arranged at two ends of the bottom of the rack, and anti-slip pads are arranged at the bottoms of the supporting legs. The support legs and the anti-slip pads at the bottoms of the support legs can enable the device to be placed stably.

In order to prevent the gear from falling to two ends of the rack in the process of walking on the rack, preferably, the left end and the right end of the rack are provided with stop blocks.

In order to facilitate observation of cycloidal trajectories corresponding to different points on the circumference, preferably, the through holes on the second rotating rod include a plurality of through holes, and the plurality of through holes are arranged along the length direction of the second rotating rod. A painting brush can be placed in the through holes to draw the cycloid, and the drawing brush is suitable for drawing boards with different areas.

Preferably, a painting brush with the diameter matched with that of the through hole is arranged in the through hole, and the painting brush is detachably connected to the through hole. In order to facilitate use, a painting brush can be arranged in the through hole in a matched mode, the painting brush is detachably connected with the through hole, and the disassembling mode can be threaded connection, clamping connection and the like.

For convenience of storage and carrying, preferably, the first rotating rod and the second rotating rod are detachably connected to rotating shafts on two sides of the gear. The disassembly mode can be threaded connection, clamping connection and the like.

The utility model discloses in still including other subassemblies that can make this supplementary teaching device normal use for mathematical education, all belong to the conventional selection in this field. In addition, the device or the assembly which is not limited in the utility model adopts the conventional means in the field, for example, the arrangement of the gear, the rack bar and the roller in the rectangular square tube and the detachable connection mode can be arranged according to the prior art.

The utility model discloses an auxiliary teaching device for mathematical education's effect principle does: during the use, place the device in front of the drawing board, put into one of them through-hole with the painting brush, hold the handle, rotate first bull stick, the gear rotates the walking on the rack, and the second bull stick also rotates along with it simultaneously, and the painting brush in the through-hole can draw the cycloid on the drawing board, can audio-visually draw the removal orbit of certain point on the circle, convenient to use. After the use, also can dismantle first bull stick and second bull stick, more conveniently accomodate and carry.

The utility model discloses a set up mathematics teaching with supplementary teaching device rationally, draw the cycloid, make the motion trail of circle on the straight line surveyability, the student of being convenient for understands, the device simple structure is effective simultaneously, and convenient to use has very high spreading value.

Drawings

Fig. 1 is a schematic structural view of an auxiliary teaching device for mathematical education according to an embodiment.

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

Fig. 3 is an AA-side view of fig. 1.

The reference numbers are as follows: 1. a rack; 2. a gear; 3. a U-shaped groove; 4. a roller; 5. a chute; 6. a first rotating lever; 7. a handle; 8. a second rotating rod; 9. a through hole; 10. a stopper; 11. a support leg; 12. a non-slip mat.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples

As shown in fig. 1-3, an auxiliary teaching device for mathematical education comprises a rack 1 and a gear 2, wherein the rack 1 is engaged with the gear 2, the gear 2 is slidably connected to the rack 1 through a U-shaped groove 3, rollers 4 are arranged at the bottom of the U-shaped groove 3, the rollers 4 comprise four rollers 4, the four rollers 4 are respectively arranged at four corners of the bottom of the U-shaped groove 3, and a sliding groove 5 matched with the rollers 4 is arranged at the bottom of the rack 1; a first rotating rod 6 and a second rotating rod 8 are respectively arranged on the front side and the rear side of the U-shaped groove 3, the first rotating rod 6 and the second rotating rod 8 are both vertically and fixedly connected with a rotating shaft of the gear 2, a handle 7 is arranged on the first rotating rod 6, the handle 7 is perpendicular to the first rotating rod 6, and a through hole 9 is formed in the second rotating rod 8; the left end and the right end of the bottom of the rack 1 are provided with supporting legs 11, and the bottoms of the supporting legs 11 are provided with anti-skid pads 12.

The left end and the right end of the rack 1 are provided with a stop block 10.

The through holes 9 in the second rotating rod 8 comprise six through holes 9, and the six through holes 9 are arranged along the length direction of the second rotating rod 8.

A painting brush with the diameter matched with that of the through hole 9 is arranged in the through hole, and the painting brush is detachably connected to the through hole.

The first rotating rod 6 and the second rotating rod 8 are detachably connected to rotating shafts on two sides of the gear 2.

This mathematical education is with supplementary teaching device's effect principle does: during the use, place the device in front of the drawing board, put into one of them through-hole 9 with the painting brush, hold handle 7, rotate first bull stick 6, gear 2 rotates the walking on rack 1, and second bull stick 8 rotates thereupon simultaneously, and the painting brush in through-hole 9 can be drawn the cycloid on the drawing board, can audio-visually draw the removal orbit of certain point on the circle, convenient to use. After the use, also can dismantle first bull stick 6 and second bull stick 8, more conveniently accomodate and carry.

Through rationally setting up the supplementary teaching device for mathematical education, draw the cycloid, make the motion trail of circle on the straight line surveyability, the student of being convenient for understands, the device simple structure is effective simultaneously, and convenient to use has very high spreading value.

The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.

Claims

1. The utility model provides a mathematics teaching is with supplementary teaching device which characterized in that: the device comprises a rack and gears, wherein the rack is meshed with the gears, the gears are connected to the rack in a sliding mode through a U-shaped groove, rollers are arranged at the bottom of the U-shaped groove, the number of the rollers is four, the four rollers are respectively arranged at four corners of the bottom of the U-shaped groove, and sliding grooves matched with the rollers are formed in the bottom of the rack; a first rotating rod and a second rotating rod are respectively arranged on the front side and the rear side of the U-shaped groove, the first rotating rod and the second rotating rod are vertically and fixedly connected with a gear rotating shaft, a handle is arranged on the first rotating rod and is perpendicular to the first rotating rod, and a through hole is formed in the second rotating rod; the rack is characterized in that supporting legs are arranged at two ends of the bottom of the rack, and anti-slip pads are arranged at the bottoms of the supporting legs.

2. The auxiliary teaching device for mathematics teaching according to claim 1, characterized in that: and the left end and the right end of the rack are provided with a stop block.

3. The auxiliary teaching device for mathematics teaching according to claim 1, characterized in that: the through holes on the second rotating rod comprise a plurality of through holes which are arranged along the length direction of the second rotating rod.

4. The auxiliary teaching device for mathematics teaching according to claim 1, characterized in that: a painting brush with the diameter matched with that of the through hole is arranged in the through hole, and the painting brush is detachably connected to the through hole.

5. The auxiliary teaching device for mathematics teaching according to claim 1, characterized in that: the first rotating rod and the second rotating rod are detachably connected to rotating shafts on two sides of the gear.