CN108819573B

CN108819573B - Circle drawing equipment for mathematical education

Info

Publication number: CN108819573B
Application number: CN201810820913.6A
Authority: CN
Inventors: 郑一格
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-07-17
Anticipated expiration: 2038-07-24
Also published as: CN108819573A

Abstract

The invention discloses circle drawing equipment for mathematical teaching, which comprises a mounting plate, wherein a rotating hole is formed in the mounting plate, a rotating block is rotatably mounted in the rotating hole, the bottom of the rotating block extends to the lower part of the mounting plate and is rotatably provided with a positioning column, the top of the positioning column is provided with a moving groove, a moving plate is slidably mounted in the moving groove, the top of the moving plate is fixedly provided with a first clamping block, the bottom of the rotating block is provided with a first clamping groove, the first clamping block is clamped with the first clamping groove, the bottom of the moving plate is fixedly provided with a rack, the positioning column is provided with a mounting hole communicated with the moving groove, a rotating rod is rotatably mounted in the mounting hole, and a gear positioned in the moving groove is fixedly sleeved on the outer side of the rotating. The circle drawing equipment disclosed by the invention can be used for folding the positioning column by moving the first clamping block, and can be used for folding the rotating plate by moving the second clamping block, so that the circle drawing equipment is convenient to carry and operate.

Description

Circle drawing equipment for mathematical education

Technical Field

The invention relates to the technical field of circle drawing equipment, in particular to circle drawing equipment for mathematical education.

Background

At present, it is applied to various auxiliary devices in mathematical education, such as: compasses, a ruler, a protractor, a calculator and the like, wherein the compasses are an indispensable auxiliary device for drawing circles in mathematical teaching, the traditional compasses comprise a common compass, a spring compass, a point compass, a beam gauge, an old-fashioned compass, a propelling pencil compass, a movable small compass and the like, and when the existing compasses are used, the distance between a needle point of the compasses and a pen point, which is a radius, needs to be measured by using the ruler; then aligning the tip of the needle to the circle center of the circle to be drawn; finally, two fingers are used for rotating a rotating shaft at the upper end to enable a pen point to rotate for a circle around a needle point to draw a circle, however, when the existing compasses are used for actually drawing a circle, the fingers cannot rotate the rotating shaft for a circle at one time, so that a whole circle cannot be drawn at one time, and the existing compasses continue to rotate after hand changing, so that the problem that the radius of the drawn circle is changed due to hand changing exists in the process, and the existing traditional compasses cannot perform circle center positioning or cannot perform circle drawing on a smooth hard surface due to the fact that the existing compasses adopt the needle point for positioning, and through retrieval, the patent document with the application number of 201710296311.0 discloses a device for mathematics auxiliary teaching, and the problems that the circle cannot be completely drawn at one time, the radius is easy to change, the smooth hard surface cannot draw a circle and the like are effectively solved; the technical scheme includes that the device comprises a support frame, the support frame is provided with an inner edge, a sealing plate is arranged on the support frame, cross beams are arranged on two sides of the support frame, support legs are connected on the cross beams, a rotary drum is placed on the inner edge of the support frame, a positioning needle is arranged in the rotary drum and fixed on the sealing plate, a rotary shaft is arranged in the rotary drum, a first ratchet wheel and a first gear are arranged on the rotary shaft, the first ratchet wheel is arranged above the first gear, a third gear is arranged outside the first ratchet wheel, a first pawl is arranged on the third gear, an outer gear ring of the first ratchet wheel is meshed, the first gear is meshed with a second gear, a second ratchet wheel is arranged in the second gear, a second pawl is arranged on the second gear, the second ratchet wheel is connected with the rotary drum, a radius; the invention has the advantages of ingenious, simple and practical structure, accurate radius and suitability for various drawing planes, but the device is inconvenient to fold and carry, so that the circle drawing equipment for mathematical teaching is provided for solving the problems.

Disclosure of Invention

Aiming at the problems, the invention provides circle drawing equipment for mathematical education, which can effectively solve the problems of inconvenient folding and carrying in the background technology, and can be folded and carried conveniently.

In order to achieve the purpose, the invention provides the following technical scheme:

A circle drawing device for mathematical education comprises a mounting plate, a rotating hole is arranged on the mounting plate, a rotating block is rotatably arranged in the rotating hole, the bottom of the rotating block extends to the lower part of the mounting plate and is rotatably provided with a positioning column, the top of the positioning column is provided with a moving groove, a moving plate is arranged in the moving groove in a sliding manner, the top of the moving plate is fixedly provided with a first clamping block, the bottom of the rotating block is provided with a first clamping groove, a first clamping block is clamped with the first clamping groove, the bottom of the moving plate is fixedly provided with a rack, the positioning column is provided with a mounting hole communicated with the moving groove, a rotating rod is rotatably arranged in the mounting hole, a gear positioned in the moving groove is fixedly sleeved on the outer side of the rotating rod, the gear is meshed with the rack, a bearing plate is fixedly arranged at the bottom of the rack, and one side of the bearing plate extends to the outer side of the positioning column;

The outer side of the positioning column is rotatably provided with a rotating plate, the rotating plate is located below the moving groove, the bottom of the rotating plate is provided with a sliding groove, a sliding block is arranged in the sliding groove in a sliding mode, a placing block is fixedly arranged at the bottom of the sliding block, a placing groove is formed in the bottom of the placing block, a fixing seat is fixedly arranged on the positioning column and located below the rotating plate, the top of the fixing seat is provided with a groove, a sliding plate is arranged in the groove in a sliding mode, one side of the sliding plate extends to the outer side of the fixing seat and is fixedly provided with a connecting rod, the connecting rod is located on the outer side of the positioning column, the top of the connecting rod is fixedly connected with the bottom of the bearing plate, a second clamping groove is formed in the bottom of.

As a preferable technical scheme of the invention, a bearing is arranged in the rotating hole, an outer ring of the bearing is fixedly connected with the inner wall of the rotating hole, an inner ring of the bearing is fixedly sleeved with the outer side of the rotating block, and the top of the rotating block extends to the upper part of the mounting plate and is fixedly provided with a knob.

As a preferable technical scheme of the present invention, a cylindrical groove is formed in an inner wall of one side of the moving groove, a cylindrical block is rotatably mounted in the cylindrical groove, one side of the cylindrical block is fixedly connected to one end of the rotating rod, a rotating block is fixedly mounted at the other end of the rotating rod, and the rotating block is located outside the positioning column.

As a preferable technical scheme, a sliding hole is formed in the positioning column, and one side of the bearing plate penetrates through the sliding hole.

As a preferable technical scheme, one side of the fixed seat is provided with a rectangular hole, the rectangular hole is communicated with the groove, one side of the sliding plate penetrates through the rectangular hole, a sliding rod is fixedly arranged in the rectangular hole, and the sliding plate is connected with the sliding rod in a sliding mode.

As a preferable technical scheme, one side of the placing block is fixedly provided with a pointer, one side of the rotating plate is fixedly provided with a graduated scale, and the pointer is matched with the graduated scale.

As a preferable technical scheme of the invention, one side of the placing block is provided with a threaded hole, a bolt is installed in the threaded hole, and one end of the bolt extends into the placing groove.

As a preferable technical scheme, the same sliding rod is fixedly installed on the inner walls of the two sides of the sliding groove, and the sliding block is connected with the sliding rod in a sliding mode.

Compared with the prior art, the invention has the beneficial effects that:

The movable plate, the first clamping block, the first clamping groove, the rack, the rotating rod, the gear and the rotating block are matched, the rotating rod is driven to rotate by the rotating block, the gear is driven to rotate by the rotating rod, the rack is driven to move downwards by the gear, the movable plate is driven to move by the rack, and the first clamping block is driven to move by the movable plate so as to be separated from the first clamping groove;

The rack, the sliding plate, the second clamping block, the second clamping groove, the connecting rod and the bearing plate are matched, the bearing plate is driven to move downwards through the rack, the connecting rod is driven to move through the bearing plate, the sliding plate is driven to move downwards through the connecting rod, and the second clamping block is driven to be separated from the second clamping groove through the sliding plate;

According to the circle drawing equipment for mathematical teaching, the positioning column is folded by moving the first clamping block, and the rotating plate can be folded by moving the second clamping block, so that the circle drawing equipment is convenient to carry and operate.

Drawings

FIG. 1 is a schematic structural diagram of a circle drawing device for mathematics teaching according to the present invention;

FIG. 2 is a schematic structural diagram of part A of a circle drawing device for mathematics teaching according to the present invention;

FIG. 3 is a schematic structural diagram of a portion B of a circle drawing device for mathematics teaching according to the present invention;

FIG. 4 is a schematic structural diagram of a part C of a circle drawing device for mathematics teaching according to the present invention;

Fig. 5 is a schematic perspective view of a connection between a moving plate and a first clamping block of a circle drawing device for mathematics teaching according to the present invention.

In the figure: 1-mounting plate, 2-rotating hole, 3-rotating block, 4-positioning column, 5-moving groove, 6-moving plate, 7-first clamping block, 8-first clamping groove, 9-rack, 10-mounting hole, 11-rotating rod, 12-gear, 13-rotating block, 14-rotating plate, 15-sliding groove, 16-sliding block, 17-placing block, 18-placing groove, 19-pointer, 20-graduated scale, 21-fixing seat, 22-groove, 23-sliding plate, 24-second clamping block, 25-second clamping groove, 26-connecting rod, 27-threaded hole, 28-bolt and 29-bearing plate.

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):

Referring to fig. 1-5, the present invention provides a technical solution:

A circle drawing device for mathematical education comprises a mounting plate 1, a rotating hole 2 is formed in the mounting plate 1, a rotating block 3 is rotatably mounted in the rotating hole 2, the bottom of the rotating block 3 extends to the lower portion of the mounting plate 1 and is rotatably mounted with a positioning column 4, a moving groove 5 is formed in the top of the positioning column 4, a moving plate 6 is slidably mounted in the moving groove 5, a first clamping block 7 is fixedly mounted at the top of the moving plate 6, a first clamping groove 8 is formed in the bottom of the rotating block 3, the first clamping block 7 is clamped with the first clamping groove 8, a rack 9 is fixedly mounted at the bottom of the moving plate 6, a mounting hole 10 communicated with the moving groove 5 is formed in the positioning column 4, a rotating rod 11 is rotatably mounted in the mounting hole 10, a gear 12 located in the moving groove 5 is fixedly sleeved on the outer side of the rotating rod 11, the gear 12 is meshed with the rack 9, one side of the bearing plate 29 extends to the outer side of the positioning column 4;

A rotating plate 14 is rotatably mounted on the outer side of the positioning column 4, the rotating plate 14 is located below the moving groove 5, a sliding groove 15 is formed in the bottom of the rotating plate 14, a sliding block 16 is slidably mounted in the sliding groove 15, a placing block 17 is fixedly mounted at the bottom of the sliding block 16, a placing groove 18 is formed in the bottom of the placing block 17, a fixing seat 21 is fixedly mounted on the positioning column 4, the fixing seat 21 is located below the rotating plate 14, a groove 22 is formed in the top of the fixing seat 21, a sliding plate 23 is slidably mounted in the groove 22, one side of the sliding plate 23 extends to the outer side of the fixing seat 21 and is fixedly mounted with a connecting rod 26, the connecting rod 26 is located on the outer side of the positioning column 4, the top of the connecting rod 26 is fixedly connected with the bottom of the bearing plate 29, a second clamping block 24 is fixedly mounted on the top of the sliding plate 23, The first clamping block 7, the first clamping groove 8, the rack 9, the rotating rod 11, the gear 12 and the rotating block 13 are matched, the rotating rod 11 is driven to rotate by the rotating block 13, the gear 12 is driven to rotate by the rotating rod 11, the rack 9 is driven to move downwards by the gear 12, the moving plate 6 is driven to move by the rack 9, the first clamping block 7 is driven to move by the moving plate 6, so that the first clamping block 7 is separated from the first clamping groove 8, the rack 9, the sliding plate 23, the second clamping block 24, the second clamping groove 25, the connecting rod 26 and the bearing plate 29 are matched, the bearing plate 29 is driven to move downwards by the rack 9, the connecting rod 26 is driven to move by the bearing plate 29, the sliding plate 23 is driven to move downwards, the second clamping block 24 is driven to be separated from the second clamping groove 25 by the sliding plate 23, and the circle drawing device for mathematical education of the invention, the folding of reference column 4 is realized to through the removal to second fixture block 24, can fold commentaries on classics board 14, portable, convenient operation.

In this embodiment, a bearing is disposed in the rotation hole 2, an outer ring of the bearing is fixedly connected with an inner wall of the rotation hole 2, an inner ring of the bearing is fixedly sleeved with an outer side of the rotation block 3, a top of the rotation block 3 extends to a position above the mounting plate 1 and is fixedly provided with a knob, a cylindrical groove is formed on an inner wall of one side of the moving groove 5, the cylindrical block is rotatably mounted in the cylindrical groove, one side of the cylindrical block is fixedly connected with one end of the rotation rod 11, the other end of the rotation rod 11 is fixedly provided with a rotation block 13, the rotation block 13 is positioned at an outer side of the positioning column 4, a sliding hole is formed on the positioning column 4, one side of the bearing plate 29 penetrates through the sliding hole, one side of the fixed seat 21 is provided with a rectangular hole, the rectangular hole is communicated with the groove 22, one side of the sliding plate, a graduated scale 20 is fixedly installed on one side of the rotating plate 14, a pointer 19 is matched with the graduated scale 20, a threaded hole 27 is formed in one side of the placing block 17, a bolt 28 is installed in the threaded hole 27, one end of the bolt 28 extends into the placing groove 18, the same sliding rod is fixedly installed on the inner walls of the two sides of the sliding groove 15, the sliding block 16 is in sliding connection with the sliding rod, the moving plate 6, the first fixture block 7, the first clamping groove 8, the rack 9, the rotating rod 11, the gear 12 and the rotating block 13 are matched, the rotating rod 11 is driven to rotate by the rotating block 13, the gear 12 is driven to rotate by the rotating rod 11, the rack 9 is driven to move downwards by the gear 12, the moving plate 6 is driven to move by the rack 9, the first fixture block 7 is driven to move by the moving plate 6, the first fixture block 7 is separated from the first clamping groove, The second clamping groove 25, the connecting rod 26 and the bearing plate 29 are matched, the bearing plate 29 is driven to move downwards through the rack 9, the connecting rod 26 is driven to move through the bearing plate 29, the sliding plate 23 is driven to move downwards through the connecting rod 26, and the second clamping block 24 is driven to be separated from the second clamping groove 25 through the sliding plate 23.

The working principle of the invention is as follows:

When needing to carry, it rotates to drive dwang 11 through rotatory piece 13, it rotates to drive gear 12 through dwang 11, it moves downwards to drive rack 9 through gear 12, it moves to drive movable plate 6 through rack 9, it moves to drive first fixture block 7 through movable plate 6, make first fixture block 7 break away from first draw-in groove 8, meanwhile, can drive loading board 29 through rack 9 and move downwards, it moves to drive connecting rod 26 through loading board 29, it moves downwards to drive sliding plate 23 through connecting rod 26, it breaks away from second draw-in groove 25 to drive second fixture block 24 through sliding plate 23, then fold reference column 4, then fold commentaries on classics board 14, standing groove 18 is used for placing the chalk, can fix the chalk through bolt 28.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The circle drawing equipment for the mathematics teaching comprises a mounting plate (1) and is characterized in that a rotating hole (2) is formed in the mounting plate (1), a rotating block (3) is rotatably mounted in the rotating hole (2), the bottom of the rotating block (3) extends to the lower side of the mounting plate (1) and is rotatably mounted with a positioning column (4), a moving groove (5) is formed in the top of the positioning column (4), a moving plate (6) is slidably mounted in the moving groove (5), a first clamping block (7) is fixedly mounted at the top of the moving plate (6), a first clamping groove (8) is formed in the bottom of the rotating block (3), the first clamping block (7) is clamped with the first clamping groove (8), a rack (9) is fixedly mounted at the bottom of the moving plate (6), and a mounting hole (10) communicated with the moving groove (5) is formed in the positioning column (4), a rotating rod (11) is rotatably mounted in the mounting hole (10), a gear (12) located in the moving groove (5) is fixedly sleeved on the outer side of the rotating rod (11), the gear (12) is meshed with the rack (9), a bearing plate (29) is fixedly mounted at the bottom of the rack (9), and one side of the bearing plate (29) extends to the outer side of the positioning column (4);

The outer side of the positioning column (4) is rotatably provided with a rotating plate (14), the rotating plate (14) is positioned below the moving groove (5), the bottom of the rotating plate (14) is provided with a sliding groove (15), the sliding groove (15) is internally provided with a sliding block (16), the bottom of the sliding block (16) is fixedly provided with a placing block (17), the bottom of the placing block (17) is provided with a placing groove (18), the positioning column (4) is fixedly provided with a fixed seat (21), the fixed seat (21) is positioned below the rotating plate (14), the top of the fixed seat (21) is provided with a groove (22), the groove (22) is internally provided with a sliding plate (23), one side of the sliding plate (23) extends to the outer side of the fixed seat (21) and is fixedly provided with a connecting rod (26), the connecting rod (26) is positioned on the outer side of the positioning column (4), and the top of the connecting rod, a second clamping block (24) is fixedly arranged at the top of the sliding plate (23), and the bottom of the rotating plate (14) is provided with

The second clamping groove (25), and the second clamping block (24) is clamped with the second clamping groove (25);

A cylindrical groove is formed in the inner wall of one side of the moving groove (5), a cylindrical block is rotatably mounted in the cylindrical groove, one side of the cylindrical block is fixedly connected with one end of the rotating rod (11), a rotating block (13) is fixedly mounted at the other end of the rotating rod (11), and the rotating block (13) is located on the outer side of the positioning column (4); a sliding hole is formed in the positioning column (4), and one side of the bearing plate (29) penetrates through the sliding hole.

2. The mathematics rounding device of claim 1, characterized in that: the bearing is arranged in the rotating hole (2), the outer ring of the bearing is fixedly connected with the inner wall of the rotating hole (2), the inner ring of the bearing is fixedly sleeved with the outer side of the rotating block (3), and the top of the rotating block (3) extends to the upper portion of the mounting plate (1) and is fixedly provided with a knob.

3. The mathematics rounding device of claim 1, characterized in that: a rectangular hole is formed in one side of the fixed seat (21), the rectangular hole is communicated with the groove (22), one side of the sliding plate (23) penetrates through the rectangular hole, a sliding rod is fixedly mounted in the rectangular hole, and the sliding plate (23) is connected with the sliding rod in a sliding mode.

4. The mathematics rounding device of claim 1, characterized in that: one side of the placing block (17) is fixedly provided with a pointer (19), one side of the rotating plate (14) is fixedly provided with a graduated scale (20), and the pointer (19) is matched with the graduated scale (20).

5. The mathematics rounding device of claim 1, characterized in that: one side of the placing block (17) is provided with a threaded hole (27), a bolt (28) is installed in the threaded hole (27), and one end of the bolt (28) extends into the placing groove (18).

6. The mathematics rounding device of claim 1, characterized in that: the inner walls of two sides of the sliding groove (15) are fixedly provided with the same sliding rod, and the sliding block (16) is connected with the sliding rod in a sliding manner.