CN210110125U

CN210110125U - University's mathematics cycloid demonstration teaching aid

Info

Publication number: CN210110125U
Application number: CN201920431211.9U
Authority: CN
Inventors: 赖邦城
Original assignee: INSTITUTE OF TECHNOLOGY EAST CHINA JIAOTONG UNIVERSITY
Current assignee: INSTITUTE OF TECHNOLOGY EAST CHINA JIAOTONG UNIVERSITY
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-02-21
Anticipated expiration: 2029-04-01

Abstract

The utility model relates to a teaching aid technical field especially discloses a university mathematics cycloid demonstrates teaching aid, including the deflector, deflector top swing joint has the slider, the slider top is fixed with the riser, the riser top is fixed with the diaphragm, diaphragm other end bottom rotates and is connected with the straight-bar, straight-bar lateral wall top is fixed with the straight-teeth gear, the straight-bar bottom mounting has the disc, the disc lateral wall is opened there is the circular recess, and the circular recess internal fixation has the ring, the disc top is fixed with the dead lever, the dead lever lateral wall is fixed with the fixation clamp, the deflector top surface is fixed with the support. The utility model discloses in, through the setting of disc and straight-teeth gear isotructure, can let the drawing of cycloid become simple, only need drag the slider, alright draw standard cycloid, this device simple structure, reasonable in design, low in manufacturing cost.

Description

University's mathematics cycloid demonstration teaching aid

Technical Field

The utility model relates to a teaching aid technical field especially relates to a university's mathematics cycloid demonstration teaching aid.

Background

In mathematics, a cycloid is defined as the locus of a point on the boundary of a circle as the circle moves along a straight line. It is one of the common trochoid lines. Cycloids are also solutions to the steepest descent problem and the isochronous descent problem.

The demonstration of cycloid is usually troublesome during college teaching, needs manual drawing and oral description, is often difficult to be accepted and understood by students, and therefore a college mathematics cycloid demonstration teaching aid is provided to solve the problems.

Disclosure of Invention

The utility model aims at solving the defects existing in the prior art and providing a college mathematics cycloid demonstration teaching aid.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The utility model provides a university's mathematics cycloid demonstration teaching aid, includes the deflector, deflector top swing joint has the slider, the slider top is fixed with the riser, the riser top is fixed with the diaphragm, diaphragm other end bottom is rotated and is connected with the straight-bar, straight-bar lateral wall top is fixed with the straight-teeth gear, the straight-bar bottom mounting has the disc, the disc lateral wall is opened there is the circular recess, and the circular recess internal fixation has the ring, the disc top is fixed with the dead lever, the dead lever lateral wall is fixed with the fixation clamp, the deflector top surface is fixed with the support, the support top is fixed with the rack, rack and straight-teeth gear intermeshing.

Preferably, the guide plate top is equipped with the guide way of the shape of the protruding character form along its length direction, and the guide way is the straight line, and the slider bottom surface is fixed with the fixture block of shape of the protruding character form, and fixture block movable mounting is in the guide way, and the fixture block closely laminates with the guide way.

Preferably, the line of the center of the circular groove falls on the boundary of the disc.

Preferably, the height of the bottom surface of the disc is higher than that of the bottom surface of the guide plate.

Preferably, the distance value between the bottom surface of the straight gear and the top surface of the disc is larger than the height value of the fixing rod.

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

the utility model discloses in:

1. through the arrangement of the structures such as the disc, the straight gear and the like, the drawing of the cycloid curve can be simple, and the standard cycloid curve can be drawn only by dragging the sliding block.

2. The device has the advantages of simple structure, reasonable design and low manufacturing cost.

Drawings

Figure 1 is the utility model provides a front view of university's mathematics cycloid demonstration teaching aid.

Figure 2 is the utility model provides a side view of university's mathematics cycloid demonstration teaching aid.

In the figure: the device comprises a guide plate 1, a sliding block 2, a vertical plate 3, a transverse plate 4, a straight rod 5, a straight gear 6, a disc 7, a ring 8, a fixing rod 9, a fixing clamp 10, a bracket 11 and a rack 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

Referring to fig. 1-2, a university mathematics cycloid demonstration teaching aid comprises a guide plate 1, a slide block 2 is movably connected to the top of the guide plate 1, a vertical plate 3 is fixed to the top of the slide block 2, a transverse plate 4 is fixed to the top end of the vertical plate 3, a straight rod 5 is rotatably connected to the bottom of the other end of the transverse plate 4, a straight gear 6 is fixed to the top of the side wall of the straight rod 5, a disc 7 is fixed to the bottom end of the straight rod 5, a circular groove is formed in the side wall of the disc 7, a circular ring 8 is fixed in the circular groove, a fixing rod 9 is fixed to the top of the disc 7, a fixing clamp 10 is fixed to the side wall of the fixing rod 9, a bracket 11 is fixed to the top of the guide plate 1, a rack 12 is fixed to the top of the bracket 11, the rack 12 is meshed with the straight gear 6, a guide groove in a shape along the length direction, the circle center line of the circular groove is located on the boundary of the disc 7, the bottom surface of the disc 7 is higher than the bottom surface of the guide plate 1, and the distance value between the bottom surface of the straight gear 6 and the top surface of the disc 7 is larger than the height value of the fixed rod 9.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The working principle of the utility model is that the pencil is put into the circular ring 8 and is clamped by the fixing clamp 10, so that the nib of the pencil is flush with the bottom surface of the guide plate 1, the vertical plate 3 is dragged at the moment, the straight rod 5 can move simultaneously, the straight gear 6 can enable the straight rod 5 to rotate, the disc 7 is driven to rotate simultaneously, and the pencil can draw at the moment to form a cycloid.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. A university mathematics cycloid demonstration teaching aid comprises a guide plate (1) and is characterized in that, the top of the guide plate (1) is movably connected with a slide block (2), the top of the slide block (2) is fixed with a vertical plate (3), a transverse plate (4) is fixed at the top end of the vertical plate (3), a straight rod (5) is rotatably connected at the bottom of the other end of the transverse plate (4), a straight gear (6) is fixed on the top of the side wall of the straight rod (5), a disc (7) is fixed at the bottom end of the straight rod (5), the side wall of the disc (7) is provided with a circular groove, a circular ring (8) is fixed in the circular groove, a fixed rod (9) is fixed at the top of the disc (7), a fixed clamp (10) is fixed on the side wall of the fixed rod (9), a support (11) is fixed on the top surface of the guide plate (1), a rack (12) is fixed on the top of the support (11), and the rack (12) is meshed with the straight gear (6).

2. The university mathematics cycloid demonstration teaching aid of claim 1, characterized in that, the deflector (1) top is equipped with the guide way of the type of dogbone along its length direction, and the guide way is the straight line, and the slider (2) bottom surface is fixed with the fixture block of type of dogbone, and fixture block movable mounting is in the guide way, and the fixture block closely laminates with the guide way.

3. A university mathematics cycloid demonstration teaching aid according to claim 1, characterized in that the line of the circle center of the circular groove falls on the border of the disc (7).

4. A university mathematics cycloid demonstration teaching aid according to claim 1, characterized in that the disc (7) has a lower surface level higher than the guide plate (1).

5. A university mathematics cycloid demonstration teaching aid as claimed in claim 1, characterized in that the distance between the bottom surface of the spur gear (6) and the top surface of the disc (7) is greater than the height of the fixing rod (9).