CN210324624U

CN210324624U - Geometry projection arrangement for mathematics

Info

Publication number: CN210324624U
Application number: CN201921182667.2U
Authority: CN
Inventors: 郭立娟
Original assignee: Changsha Aeronautical Vocational and Technical College
Current assignee: Changsha Aeronautical Vocational and Technical College
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-14
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a geometry projection arrangement is used to mathematics, including device base, backup pad, projection cloth and projecting apparatus, it has the dwang to peg graft in one side of device base, the one end fixedly connected with handle of dwang, the one end fixedly connected with backup pad of threaded rod, the both sides of backup pad upper surface all are provided with the multisection telescopic link, the top fixedly connected with projection cloth peg of multisection telescopic link, one side of projection cloth peg is provided with the projection cloth, one side of backup pad upper surface is provided with the projecting apparatus. This geometry projection arrangement for mathematics through the setting of projection cloth and projecting apparatus, can carry out the projection to geometry, saves the time of drawing, has improved the efficiency of giving lessons greatly, through the setting of handle, dwang, first bevel gear, second bevel gear, thread bush, threaded rod and backup pad, and twist grip can adjusting device's height, facilitates the use and accomodates.

Description

Geometry projection arrangement for mathematics

Technical Field

The utility model relates to a mathematical education device technical field specifically is a geometry projection arrangement is used to mathematics.

Background

In mathematical education, high school mathematics is mainly divided into two major parts, namely algebra and geometry. Algebra is mainly a linear function, a quadratic function, an inverse proportion function and a trigonometric function, geometry is divided into two parts of plane analytic geometry and solid geometry, and the related knowledge of the plane analytic geometry is complex.

When a mathematical course learns a geometric chapter, a mathematical teacher often needs to give lessons by using various figures, the commonly used geometric figures comprise a circle, a square, a rectangle, an equilateral triangle, an isosceles triangle and a right-angled triangle, and the figures need to be repeatedly used during the teaching, so that the mathematical teacher has too much time on the aspect of drawing when in class, and the teaching efficiency is greatly reduced, thereby being beneficial to teaching. A mathematical geometry projection apparatus is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a geometry projection arrangement is used to mathematics has solved the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a projection device of geometric figure for mathematics comprises a device base, a supporting plate, a projection cloth and a projector, a rotating rod is inserted into one side of the device base, one end of the rotating rod is fixedly connected with a handle, one end of the rotating rod, which is far away from the handle, is fixedly connected with a first bevel gear, one side of the first bevel gear is engaged and connected with a second bevel gear, the second bevel gear is sleeved on the outer surface of the threaded sleeve, the internal thread of the threaded sleeve is connected with a threaded rod, one end of the threaded rod penetrates above the device base and is fixedly connected with a supporting plate, both sides of the upper surface of the supporting plate are fixedly connected with fixing blocks, one side of the fixed block is movably connected with a plurality of sections of telescopic rods, the top of each section of telescopic rod is fixedly connected with a projection cloth hanging rod, one side of projection cloth peg is provided with the projection cloth, one side of backup pad upper surface is provided with the projecting apparatus.

Optionally, a bolt rotating shaft is inserted into one side of the multiple telescopic rods, the multiple telescopic rods are movably connected with the fixed block through the bolt rotating shaft, one end of the bolt rotating shaft penetrates through one side of the fixed block and is in threaded connection with a positioning nut, and a positioning threaded sleeve is sleeved on the surface of each multiple telescopic rod.

Optionally, one side of the fixed block is provided with a spring clamp, the bottom of the projector is movably connected with a rotatable supporting rod, and the other end of the supporting rod is movably connected with the supporting plate.

Optionally, bearings are arranged on the upper side and the lower side of the device base, and the threaded sleeve is movably connected with the device base through the bearings.

Optionally, the four corners of the lower surface of the supporting plate are fixedly connected with supporting inserted rods, the four corners of the top of the base of the device are provided with supporting sleeves, and the supporting inserted rods are inserted into the supporting sleeves.

Optionally, the lower fixed surface of device base installs the universal wheel, the quantity of universal wheel is four, four the universal wheel sets up respectively in the four corners department of device base lower surface.

(III) advantageous effects

The utility model provides a geometry projection arrangement for mathematics possesses following beneficial effect:

1. this geometry projection arrangement for mathematics through the setting of projection cloth and projecting apparatus, can carry out the projection to geometry, saves the time of drawing, has improved the efficiency of giving lessons greatly.

2. This geometry projection arrangement for mathematics, through the setting of handle, dwang, first bevel gear, second bevel gear, thread bush, threaded rod and backup pad, twist grip can control the backup pad and go up and down to adjustable device's height facilitates the use.

3. This geometry projection arrangement for mathematics, through bolt pivot and set nut's setting, when loosening set nut, the multisection telescopic link can rotate around the bolt pivot, and the angle of turning round tight set nut can be fixed the multisection telescopic link, still conveniently folds and accomodates the device simultaneously.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the base of the device of the present invention;

FIG. 3 is a schematic view of the side view of the present invention;

fig. 4 is a schematic structural diagram of the bolt rotating shaft of the present invention.

In the figure: 1. a device base; 2. a support plate; 3. a projection cloth; 4. a projector; 5. rotating the rod; 6. a handle; 7. a first bevel gear; 8. a second bevel gear; 9. a threaded sleeve; 10. a threaded rod; 11. a fixed block; 12. a multi-section telescopic rod; 13. a projection cloth hanging rod; 14. a bolt rotating shaft; 15. positioning a nut; 16. positioning threaded sleeves; 17. a spring clip; 18. a support bar; 19. a bearing; 20. supporting the inserted rod; 21. a support sleeve; 22. a universal wheel.

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 to 4, the present invention provides a technical solution: the utility model provides a geometry figure projection arrangement for mathematics, including device base 1, backup pad 2, projection cloth 3 and projecting apparatus 4, one side of device base 1 is pegged graft there is dwang 5, the one end fixedly connected with handle 6 of dwang 5, the one end fixedly connected with first bevel gear 7 of handle 6 is kept away from to dwang 5, one side meshing of first bevel gear 7 is connected with second bevel gear 8, second bevel gear 8 cup joints in the surface of thread bush 9, the upper and lower both sides of device base 1 all are provided with bearing 19, thread bush 9 passes through bearing 19 and device base 1 swing joint, through the setting of thread bush 9, stability when can guarantee the rotation of thread bush 9, the internal thread of thread bush 9 is connected with threaded rod 10, the one end of threaded rod 10 runs through to the top of device base 1 and fixedly connected with backup pad 2, through handle 6, dwang 5, first bevel gear 7, The height of the device can be adjusted, the use is convenient, the four corners of the lower surface of the supporting plate 2 are fixedly connected with supporting inserted rods 20, the four corners of the top of the device base 1 are respectively provided with a supporting sleeve 21, the supporting inserted rods 20 are inserted into the supporting sleeves 21, the stability of the supporting plate 2 during lifting can be ensured by matching the supporting inserted rods 20 with the supporting sleeves 21, the two sides of the upper surface of the supporting plate 2 are respectively fixedly connected with a fixed block 11, one side of the fixed block 11 is movably connected with a multi-section telescopic rod 12, the surface of the multi-section telescopic rod 12 is sleeved with a positioning threaded sleeve 16, the height of a projection cloth hanging rod 13 can be adjusted by arranging the multi-section telescopic rod 12, the projection cloth 3 can be conveniently hung and spread, one side of the multi-section telescopic rod 12 is inserted with a bolt rotating shaft 14, the multi-section telescopic rod 12 is movably connected with the fixed block 11 through a bolt rotating shaft 14, one end of the bolt rotating shaft 14 penetrates through one side of the fixed block 11 and is in threaded connection with a positioning nut 15, when the positioning nut 15 is loosened through the bolt rotating shaft 14 and the positioning nut 15, the multi-section telescopic rod 12 can rotate around the bolt rotating shaft 14, the positioning nut 15 is tightened to fix the angle of the multi-section telescopic rod 12, the device is convenient to fold, the top of the multi-section telescopic rod 12 is fixedly connected with a projection cloth hanging rod 13, one side of the projection cloth hanging rod 13 is provided with a projection cloth 3, one side of the fixed block 11 is provided with a spring clamp 17, the projection cloth 3 can be clamped through the arrangement of the spring clamp 17, the projection cloth 3 can be vertically spread, one side of the upper surface of the support plate 2 is provided with a projector 4, and through the arrangement of the projection cloth 3 and, save the time of drawing, the efficiency of giving lessons is greatly improved, the bottom swing joint of projecting apparatus 4 has rotatable bracing piece 18, the other end and the 2 swing joint of backup pad of bracing piece 18, setting through bracing piece 18, the convenient angle to projecting apparatus 4 carries out rotation adjustment, the fixed surface of device base 1 installs universal wheel 22, the quantity of universal wheel 22 is four, four universal wheels 22 set up respectively in the four corners department of device base 1 lower surface, setting through universal wheel 22, the convenience is removed the device.

In conclusion, this geometry projection arrangement for mathematics, through the setting of projection cloth 3 and projecting apparatus 4, can project the geometry, save the time of drawing, the efficiency of giving lessons has been improved greatly, through handle 6, dwang 5, first bevel gear 7, second bevel gear 8, thread bush 9, the setting of threaded rod 10 and backup pad 2, turning handle 6 can control backup pad 2 and go up and down, thereby adjustable device's height, facilitate the use, through bolt pivot 14 and set nut 15's setting, when loosening set nut 15, multisection telescopic link 12 can rotate around bolt pivot 14, it can fix the angle of multisection telescopic link 12 to turn on set nut 15 tightly, still conveniently fold and accomodate the device simultaneously.

The 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 utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a geometry projection arrangement for mathematics, includes device base (1), backup pad (2), projection cloth (3) and projecting apparatus (4), its characterized in that: one side of the device base (1) is spliced with a rotating rod (5), one end of the rotating rod (5) is fixedly connected with a handle (6), one end of the rotating rod (5), which is far away from the handle (6), is fixedly connected with a first bevel gear (7), one side of the first bevel gear (7) is meshed with a second bevel gear (8), the second bevel gear (8) is sleeved on the outer surface of a threaded sleeve (9), the internal thread of the threaded sleeve (9) is connected with a threaded rod (10), one end of the threaded rod (10) penetrates through the upper part of the device base (1) and is fixedly connected with a supporting plate (2), two sides of the upper surface of the supporting plate (2) are both fixedly connected with fixed blocks (11), one side of each fixed block (11) is movably connected with a plurality of telescopic rods (12), and the top of each telescopic rod (12) is fixedly connected, one side of projection cloth peg (13) is provided with projection cloth (3), one side of backup pad (2) upper surface is provided with projecting apparatus (4).

2. A mathematical geometry projection apparatus as defined in claim 1, wherein: one side of the multi-section telescopic rod (12) is inserted with a bolt rotating shaft (14), the multi-section telescopic rod (12) is movably connected with the fixed block (11) through the bolt rotating shaft (14), one end of the bolt rotating shaft (14) penetrates through one side of the fixed block (11) and is in threaded connection with a positioning nut (15), and a positioning threaded sleeve (16) is sleeved on the surface of the multi-section telescopic rod (12).

3. A mathematical geometry projection apparatus as defined in claim 1, wherein: one side of fixed block (11) is provided with spring clamp (17), the bottom swing joint of projecting apparatus (4) has rotatable bracing piece (18), the other end and backup pad (2) swing joint of bracing piece (18).

4. A mathematical geometry projection apparatus as defined in claim 1, wherein: the device is characterized in that bearings (19) are arranged on the upper side and the lower side of the device base (1), and the threaded sleeve (9) is movably connected with the device base (1) through the bearings (19).

5. A mathematical geometry projection apparatus as defined in claim 1, wherein: the supporting device is characterized in that supporting inserted rods (20) are fixedly connected to four corners of the lower surface of the supporting plate (2), supporting sleeves (21) are arranged at the four corners of the top of the device base (1), and the supporting inserted rods (20) are inserted into the supporting sleeves (21).

6. A mathematical geometry projection apparatus as defined in claim 1, wherein: the lower fixed surface of device base (1) installs universal wheel (22), the quantity of universal wheel (22) is four, four universal wheel (22) set up respectively in the four corners department of device base (1) lower surface.