CN214541214U

CN214541214U - Primary school mathematics four fundamental operations demonstration device

Info

Publication number: CN214541214U
Application number: CN202023125332.2U
Authority: CN
Inventors: 吴平厚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-10-29
Anticipated expiration: 2030-12-23

Abstract

The application discloses elementary four arithmetic operation presentation device of primary school's mathematics, including counter weight base, truckle, safety cover, knob, uide bushing, movable rod, nut seat, bolt, bear dish, magnet piece, square frame, plate body, elementary four arithmetic formula board, rectangle logical groove, iron plate, gooseneck, worm wheel, connecting axle and locating hole. The self-locking rotation adjusting mechanism has the advantages that rotation adjustment is convenient, the change of the plate body on the front side of the whole device can be realized, the replacement demonstration of four arithmetic operations is realized, the whole using effect is good, and after rotation adjustment, the self-locking rotation adjusting mechanism has a self-locking effect and is convenient to lock after adjustment; the lifting adjusting rod is arranged, so that lifting adjustment can be performed, the display height can be adjusted, the display height position can be adjusted conveniently, display at different heights can be realized, and the display effect is good; meanwhile, the magnet block is convenient to separate from the iron plate, and the magnet block is convenient to take down.

Description

Primary school mathematics four fundamental operations demonstration device

Technical Field

The application relates to an operation demonstration device, in particular to a primary school mathematics four fundamental operations demonstration device.

Background

Primary schools are schools for which people receive primary regular education and are important components of basic education; with the social development, kindergartens are opened in front of the kindergartens; generally, children of suitable age in primary school are 6-12 years old, and the education age in the primary school at the present stage is 6 years; wherein mathematics is an important subject of primary school education.

In the prior art, the four arithmetic operations are generally directly used for demonstration teaching through a writing board or a blackboard, but the operation is possibly inconvenient to use; meanwhile, the multifunctional counting machine is lack of functions of rotation adjustment and height adjustment, and is further used for demonstrating that the counted articles are not easy to take down and recycle after being installed. Therefore, a device for demonstrating the four fundamental operations of primary mathematics is provided for solving the problems.

Disclosure of Invention

In order to solve the defects of the prior art, the application provides a primary school mathematics four fundamental operations demonstration device, which comprises a movable base and a self-locking rotation adjusting mechanism fixedly installed at the center position of the top of the movable base, wherein the top of the self-locking rotation adjusting mechanism is connected with a lifting adjusting rod, the top end of the lifting adjusting rod is fixedly connected with a square frame, the periphery of the square frame is fixedly embedded with plate bodies, the surface of the top of each plate body is fixedly embedded with four fundamental operations formula plates, the surface of each plate body is provided with a rectangular through groove, the rectangular through grooves are embedded with iron plates, and a plurality of gooseneck tubes are connected between the iron plates and the plate bodies; the fixed cover of fixed cover has connect and has born the dish on the face of lift adjustment pole, bear the inside of dish and place a plurality of magnet piece.

Further, the mobile base comprises a counterweight base and casters, the number of the casters is a plurality of, and the casters are all installed at the bottom of the counterweight base.

Further, adjustment mechanism is rotated in auto-lock includes safety cover, knob, worm wheel and connecting axle, the bottom of safety cover and the top fixed connection of counter weight base, worm and connecting axle all rotate the inside of installing at the safety cover, the vertical setting of connecting axle, the connecting axle cup joints with the worm wheel is fixed, the worm wheel is connected with the worm meshing, the one end fixedly connected with knob of worm.

Further, lift adjustment pole includes uide bushing, movable rod and positioning mechanism, the uide bushing runs through the through-hole of seting up at the safety cover top, the bottom of uide bushing and the top fixed connection of connecting axle, the uide bushing is connected with movable rod clearance fit, a plurality of locating hole has been seted up along length direction equidistant to the surface of movable rod, positioning mechanism installs on the outer mantle wall of uide bushing, positioning mechanism and one of them the locating hole gomphosis is connected, the top of movable rod and the center department fixed connection of square frame bottom.

Furthermore, the positioning mechanism comprises a nut seat and a bolt, the nut seat is fixedly connected with the outer wall of the guide sleeve, the guide sleeve is communicated with the nut seat and installed, the bolt is in threaded connection with the nut seat, and one end of the bolt is connected with the positioning hole in an embedded mode.

Furthermore, one end of the gooseneck is fixedly connected with the plate surface of the plate body, and the other end of the gooseneck is fixedly connected with the plate surface of the iron plate.

Furthermore, a round hole is formed in the middle of the bearing plate, and the bearing plate is fixedly sleeved with the guide sleeve.

Further, the magnet block is of a cylindrical structure, and the magnet block is magnetically connected with the inner wall of the bearing disc.

Further, the counterweight base is of a disc-shaped structure, and a counterweight block is fixedly connected to the bottom of the counterweight base.

Furthermore, the movable rod and the bottom of the square frame are fixedly connected with a reinforcing rib plate.

The beneficial effect of this application is: the application provides a primary school mathematics four fundamental operations operation presentation device convenient to heighten and rotate and adjust and change show direction.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 2 is a schematic view of an internal structure of a protective cover according to an embodiment of the present disclosure;

fig. 3 is a schematic view illustrating a connection structure between a plate body and an iron plate according to an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a guide sleeve and a movable rod according to an embodiment of the present application;

FIG. 5 is a schematic view of a bottom structure of a carrier tray according to an embodiment of the present application;

fig. 6 is a schematic view of a bottom structure of a square frame according to an embodiment of the present application.

In the figure: 1. the device comprises a counterweight base, 2, casters, 3, a protective cover, 4, a knob, 5, a guide sleeve, 6, a movable rod, 7, a nut seat, 8, a bolt, 9, a bearing disc, 10, a magnet block, 11, a square frame, 12, a plate body, 13, a four-rule operation formula plate, 14, a rectangular through groove, 15, an iron plate, 16, a gooseneck, 17, a worm, 18, a worm wheel, 19, a connecting shaft, 20 and a positioning hole.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-6, a primary school mathematics four fundamental operations demonstration device comprises a movable base and a self-locking rotation adjusting mechanism fixedly installed at the center of the top of the movable base, the top of the self-locking rotation adjusting mechanism is connected with a lifting adjusting rod, the top end of the lifting adjusting rod is fixedly connected with a square frame 11, the periphery of the square frame 11 is fixedly embedded with a plate body 12, the top surface of the plate body 12 is fixedly embedded with a four fundamental operations formula plate 13, the four fundamental operations formula plate 13 is provided with a plus sign, a minus sign, a multiplier sign and a minus sign for distinguishing, and is provided with an equal sign at the same time, only the number is filled, the operation demonstration can be carried out, different operations can be carried out, the surface of the plate body 12 is provided with a rectangular through groove 14, the rectangular through groove 14 is embedded with an iron plate 15, and the iron plate 15 is used for the adsorption of a magnet block 10, the multifunctional teaching aid is characterized in that a limiting placement is provided, the showing of the magnet blocks 10 for operation is performed by increasing or reducing, a plurality of gooseneck tubes 16 are connected between the iron plates 15 and the plate bodies 12 and used for operation showing, the showing of addition, subtraction, multiplication and division is provided by the four plate bodies 12, the operation formula of addition, subtraction, multiplication and division is written by the four operation formula plates 13, the magnet blocks 10 are magnetically adsorbed by the iron plates 15, the operation is demonstrated by increasing and decreasing the number of the magnet blocks 10, the demonstration operation is convenient, the rotation adjustment is convenient, the change of the plate body 12 on the front side of the whole device can be realized, the replacement demonstration of the four operations is realized, the integral using effect is good, and after the rotation adjustment, the self-locking effect is realized by the self-locking rotation adjusting mechanism, and the locking after the adjustment is convenient;

fixed cover on the face of lifting adjusting rod has been connect and has been born dish 9, a plurality of magnet piece 10 has been placed to the inside that bears dish 9, magnet piece 10 is got through the manual work and is put, realize increasing, subtract, accomplish the operation, magnet piece 10 is convenient for break away from with iron plate 15, iron plate 15 adopts gooseneck 16 to connect, design and shape adjustable effect through gooseneck 16, realize iron plate 15's removal, iron plate 15 can move to the top that bears dish 9, adjust the holding level simultaneously, be convenient for carry out pushing down of magnet piece 10, sweep it down through using the hand, can fall into and bear dish 9, play the effect of being convenient for to take off.

The movable base comprises a counterweight base 1 and a plurality of trundles 2, the trundles 2 are arranged at the bottom of the counterweight base 1, the movable base provides a moving function for the whole device, and particularly, the trundles 2 roll on the ground to realize movement, meanwhile, the counterweight base 1 has weight, the bottom of the counterweight block is provided, the integral gravity center is lower, and the stability is good; the self-locking rotation adjusting mechanism comprises a protective cover 3, a knob 4, a worm 17, a worm wheel 18 and a connecting shaft 19, the bottom of the protective cover 3 is fixedly connected with the top of the counterweight base 1, the worm 17 and the connecting shaft 19 are rotatably installed inside the protective cover 3, the connecting shaft 19 is vertically arranged, the connecting shaft 19 is fixedly sleeved with the worm wheel 18, the worm wheel 18 is meshed with the worm 17, one end of the worm 17 is fixedly connected with the knob 4 and can be rotated and adjusted, the front plate body 12 of the whole device is changed, demonstration of different operations is realized, and meanwhile, internal transmission is realized through the worm 17 and the worm wheel 18, so that the self-locking effect is achieved; the lifting adjusting rod comprises a guide sleeve 5, a movable rod 6 and a positioning mechanism, wherein the guide sleeve 5 penetrates through a through hole formed in the top of the protective cover 3, the bottom end of the guide sleeve 5 is fixedly connected with the top end of the connecting shaft 19, the guide sleeve 5 is in clearance fit connection with the movable rod 6, a plurality of positioning holes 20 are formed in the surface of the movable rod 6 at equal intervals along the length direction, the positioning mechanism is installed on the outer sleeve wall of the guide sleeve 5 and is connected with one of the positioning holes 20 in an embedded mode, the top end of the movable rod 6 is fixedly connected with the center of the bottom of the square frame 11, height adjustment can be achieved, the lifting adjusting rod is provided, lifting adjustment can be achieved, adjustment of display height positions is facilitated, display of different heights is achieved, and the display effect is good; the positioning mechanism comprises a nut seat 7 and a bolt 8, the nut seat 7 is fixedly connected with the outer wall of the guide sleeve 5, the guide sleeve 5 is communicated with the nut seat 7, the bolt 8 is in threaded connection with the nut seat 7, one end of the bolt 8 is in embedded connection with the positioning hole 20, and the positioning mechanism is used for positioning; one end of the gooseneck 16 is fixedly connected with the plate surface of the plate body 12, the other end of the gooseneck 16 is fixedly connected with the plate surface of the iron plate 15, and the gooseneck 16 has the functions of shaping and shape changing, so that the position adjustment of the iron plate 15 can be realized, the position of the iron plate can be changed, and the magnet block 10 on the iron plate can be conveniently taken down; a round hole is formed in the middle of the bearing plate 9, and the bearing plate 9 is fixedly sleeved with the guide sleeve 5; the magnet block 10 is of a cylindrical structure, the magnet block 10 is magnetically connected with the inner wall of the bearing plate 9, and the bearing plate 9 is made of iron and is used for being magnetically adsorbed to the magnet block 10 to realize placement; the counterweight base 1 is of a disc-shaped structure, and the bottom of the counterweight base 1 is fixedly connected with a counterweight block for counterweight and reducing the overall gravity center; the movable rod 6 and the bottom of the square frame 11 are fixedly connected with reinforcing rib plates for reinforcing, so that the connection strength is improved.

When the device is used, the whole device is used for calculation demonstration of four rules, and the whole device is pushed to roll on the ground through the trundles 2, so that the whole device moves to a display position; the worm 17 is rotated by rotating the knob 4, the rotation of the connecting shaft 19 is realized by the meshing transmission between the worm 17 and the worm wheel 18, so that the lifting adjusting rod and the square frame 11 are rotated together, the plate body 12 at the front display position is changed, the demonstration operation is changed, the display of different operations can be performed, the operation is specifically realized by the four-fundamental operation formula plate 13, the four-fundamental operation formula plate 13 is provided with a plus sign, a minus sign, a multiplier sign and a minus sign for distinguishing, the different operations can be performed, when the demonstration is performed, the magnet block 10 is taken out, the magnet block is placed on the iron plate 15 for adsorption, the demonstration is realized by increasing and decreasing the number of the magnet block 10, and the whole display effect is better;

when height adjustment is needed, the bolt 8 is loosened, so that the bolt 8 is separated from the positioning hole 20, the movable rod 6 is pulled upwards to slide with the guide sleeve 5, height adjustment is achieved, after adjustment, the bolt 8 is screwed nearby, the end portion of the bolt 8 is inserted into the nearby positioning hole 20, locking installation is achieved, and height adjustment is achieved.

The application has the advantages that:

whole primary school mathematics four fundamental operations of mathematics presentation device is used for the operation show, specifically provide the show that the addition and subtraction are multiplied by the division through four plate bodies 12, be used for writing the addition and subtraction and the operation formula of multiplying the division through four fundamental operations formula boards 13, carry out magnetic force through iron plate 15 and adsorb magnet piece 10, the figure increase and decrease through magnet piece 10, the demonstration of calculating, be convenient for demonstrate the operation, be convenient for rotate the regulation simultaneously, can realize the positive plate body 12 of whole device and change the demonstration, realize the change demonstration of four fundamental operations, holistic result of use is better, rotate simultaneously and adjust the back, rotate the effect that adjustment mechanism has the auto-lock through the auto-lock, be convenient for the locking after adjusting.

Whole device has lift adjustment pole, can go up and down to adjust, can carry out the regulation of show height, is convenient for carry out the regulation of show high position, realizes the not show of co-altitude, and the bandwagon effect is better.

Simultaneously be convenient for breaking away from of magnet piece 10 and iron plate 15, iron plate 15 adopts gooseneck 16 to connect, and through gooseneck 16's design and shape adjustable effect, realize iron plate 15's removal, iron plate 15 can move to the top of bearing dish 9, adjusts simultaneously and keeps the level, is convenient for carry out pushing down of magnet piece 10, sweeps it down through the hand, can fall into and bear dish 9, plays the effect of being convenient for take off.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A primary school mathematics four fundamental operations presentation device which characterized in that: the automatic lifting device comprises a movable base and a self-locking rotating adjusting mechanism fixedly installed at the center of the top of the movable base, wherein the top of the self-locking rotating adjusting mechanism is connected with a lifting adjusting rod, the top end of the lifting adjusting rod is fixedly connected with a square frame (11), plate bodies (12) are fixedly installed on the periphery of the square frame (11) in an embedded mode, four arithmetic formula boards (13) are fixedly connected on the surface of the top of each plate body (12) in an embedded mode, rectangular through grooves (14) are formed in the surface of each plate body (12), iron plates (15) are connected with the rectangular through grooves (14) in an embedded mode, and a plurality of gooseneck pipes (16) are connected between the iron plates (15) and the plate bodies (12);

the face of the lifting adjusting rod is fixedly sleeved with a bearing disc (9), and a plurality of magnet blocks (10) are placed in the bearing disc (9).

2. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 1, wherein: the movable base comprises a counterweight base (1) and trundles (2), the number of the trundles (2) is a plurality of, and the trundles (2) are all installed at the bottom of the counterweight base (1).

3. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 1, wherein: adjustment mechanism is rotated in auto-lock includes safety cover (3), knob (4), worm (17), worm wheel (18) and connecting axle (19), the bottom of safety cover (3) and the top fixed connection of counter weight base (1), worm (17) and connecting axle (19) all rotate the inside of installing in safety cover (3), connecting axle (19) vertical setting, connecting axle (19) and worm wheel (18) fixed cup joint, worm wheel (18) are connected with worm (17) meshing, the one end fixedly connected with knob (4) of worm (17).

4. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 1, wherein: the lift adjustment pole includes uide bushing (5), movable rod (6) and positioning mechanism, uide bushing (5) run through the through-hole of seting up at safety cover (3) top, the bottom of uide bushing (5) and the top fixed connection of connecting axle (19), uide bushing (5) are connected with movable rod (6) clearance fit, a plurality of locating hole (20) have been seted up along length direction equidistant to the surface of movable rod (6), positioning mechanism installs on the outer wall of uide bushing (5), positioning mechanism and one of them locating hole (20) gomphosis is connected, the top of movable rod (6) and the center department fixed connection of square frame (11) bottom.

5. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 4, wherein: the positioning mechanism comprises a nut seat (7) and a bolt (8), the nut seat (7) is fixedly connected with the outer wall of the guide sleeve (5), the guide sleeve (5) is communicated with the nut seat (7) to be installed, the bolt (8) is in threaded connection with the nut seat (7), and one end of the bolt (8) is connected with the positioning hole (20) in an embedded mode.

6. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 1, wherein: one end of the gooseneck (16) is fixedly connected with the plate surface of the plate body (12), and the other end of the gooseneck (16) is fixedly connected with the plate surface of the iron plate (15).

7. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 1, wherein: the middle part of the bearing plate (9) is provided with a round hole, and the bearing plate (9) is fixedly sleeved with the guide sleeve (5).

8. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 1, wherein: the magnet block (10) is of a cylindrical structure, and the magnet block (10) is magnetically connected with the inner wall of the bearing disc (9).

9. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 2, wherein: the counterweight base (1) is of a disc-shaped structure, and the bottom of the counterweight base (1) is fixedly connected with a counterweight block.

10. The demonstration device for arithmetic of four fundamental mathematics of primary schools according to claim 4, wherein: the movable rod (6) and the bottom of the square frame (11) are fixedly connected with a reinforcing rib plate.