CN216231357U - Portable mathematical education device - Google Patents

Portable mathematical education device Download PDF

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Publication number
CN216231357U
CN216231357U CN202122807666.6U CN202122807666U CN216231357U CN 216231357 U CN216231357 U CN 216231357U CN 202122807666 U CN202122807666 U CN 202122807666U CN 216231357 U CN216231357 U CN 216231357U
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plate
sliding
rod
writing
fixedly connected
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CN202122807666.6U
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Chinese (zh)
Inventor
肖引昌
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Beihai Vocational College
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Beihai Vocational College
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Abstract

The application discloses a mobile mathematical teaching device, which comprises a placing plate, an adjusting mechanism and an erasing mechanism; the adjusting mechanism comprises a vertical plate, a first threaded rod is connected to the bottom of the vertical plate in a rotating mode, the other end of the first threaded rod penetrates through the vertical plate and extends to the outside, two first movable sleeves are sleeved on the first threaded rod in a threaded mode, two ends of each first movable sleeve are connected with rotating plates in a rotating mode, the other ends of the rotating plates are connected to two first writing plates in a rotating mode, and the first writing plates penetrate through the two ends of the vertical plate and extend to the outside. This application rotates through first threaded rod and drives two first movable sleeve motions, and first movable sleeve motion drives the rotor plate and rotates, and the rotor plate rotates and promotes two first clipboards to vertical board both sides motion, and the first slider on the first clipboard slides on first spout to increase mathematical education's the area of writing.

Description

Portable mathematical education device
Technical Field
The application relates to the field of mathematical education, in particular to a movable mathematical education device.
Background
Mathematics is a subject of researching concepts such as quantity, structure, change, space, information and the like, is a universal means for strictly describing abstract structures and patterns of things by human beings, can be applied to any problem in the real world, plays an irreplaceable role in human historical development and social life, and is also an essential basic tool for learning and researching modern science and technology.
The mathematics teaching device is the teaching apparatus that the mathematics teacher used when carrying out the mathematics teaching, and current mathematics teaching device writes the area less, is not convenient for write more mathematical computation step, and the practicality is lower. Therefore, a mobile mathematical education apparatus is proposed to solve the above problems.
Disclosure of Invention
The portable mathematical education device that provides is arranged in solving the teaching device among the prior art and writes the less problem of area in this embodiment.
According to one aspect of the application, a mobile mathematical education device is provided, which comprises a placing plate, an adjusting mechanism and an erasing mechanism;
the adjusting mechanism comprises a vertical plate, a first threaded rod is connected to the bottom of the vertical plate in a rotating mode, the other end of the first threaded rod penetrates through the vertical plate and extends to the outside, two first movable sleeves are sleeved on the first threaded rod in a threaded mode, two rotating plates are connected to two ends of the first movable sleeves in a rotating mode, four rotating plates are connected to the other ends of the rotating plates in a rotating mode respectively, two first writing plates penetrate through two ends of the vertical plate and extend to the outside, two first sliding blocks are fixedly connected to the upper side and the lower side of the end, close to each other, of each first writing plate and four first sliding blocks are connected to first sliding grooves in a sliding mode, four first sliding grooves are fixedly arranged at four ends inside the vertical plate respectively, and a second writing plate is fixedly arranged on the front side of the vertical plate.
Further, the threads at the two ends of the first threaded rod are arranged oppositely.
Further, the erasing mechanism comprises an erasing plate, a second sliding block is fixedly connected to the erasing plate, the second sliding block is connected to a second sliding groove in a sliding mode, the second sliding groove is fixedly formed in the first writing plate, a fixed cavity is fixedly formed in the erasing plate, a telescopic rod is fixedly connected to the inner side of the fixed cavity, the other end of the telescopic rod is fixedly connected to an inserting rod, the other end of the inserting rod penetrates through the erasing plate and extends to the outside, the inserting rod is inserted into an inserting groove, and the inserting groove is fixedly formed in the first writing plate.
Furthermore, a spring is sleeved outside the telescopic rod, and two ends of the spring are respectively and fixedly connected to the insertion rod and the fixed cavity.
Furthermore, fixedly connected with slide bar on the inserted link, the slide bar top is run through and is wiped the board and extend to the outside, wipe the board and be located slide bar department and fixedly be equipped with the third fluting.
Furthermore, the first writing board and the second writing board are both fixedly provided with erasing mechanisms.
Further, place two push pedals of fixedly connected with on the board, two the push pedal other end difference fixed connection is at second traveling sleeve both ends, second traveling sleeve establishes at a supporting box, second traveling sleeve both ends slide respectively and run through supporting box both sides wall, second traveling sleeve screw thread cup joints on the second threaded rod, second threaded rod top is rotated and is connected at a supporting box roof, second threaded rod bottom fixed connection is at the rotating electrical machines output, rotating electrical machines fixed connection is on a supporting box diapire, supporting box fixed connection is on unable adjustment base.
Furthermore, the supporting box is located at both ends of the second movable sleeve and is fixedly provided with a first slot.
Furthermore, the equal fixedly connected with carriage release lever in unable adjustment base both ends, the carriage release lever top runs through the connecting box and extends to the connecting box in, carriage release lever top fixedly connected with sliding plate, the sliding plate both ends run through the connecting box both sides wall respectively and extend to the outside, it all fixedly is equipped with the second fluting to lie in sliding plate department on the connecting box both sides wall.
Furthermore, four ends of the bottom of the fixed base are fixedly connected with movable wheels.
Through the above-mentioned embodiment of this application, adopted adjustment mechanism, solved the teaching device and write the less problem of area, increased the writing space of mathematical computation step.
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 perspective view of an embodiment of the present application;
FIG. 2 is a schematic diagram of the overall internal structure of an embodiment of the present application;
fig. 3 is a schematic diagram of a partial enlarged structure at a in fig. 2 according to an embodiment of the present application.
In the figure: 1. a first writing pad; 2. a vertical plate; 3. a first slider; 4. a first chute; 5. a first threaded rod; 6. a first traveling sleeve; 7. a rotating plate; 8. a second slider; 9. a second chute; 10. wiping the board; 11. pushing the plate; 12. a second traveling sleeve; 13. a first slot; 14. a second threaded rod; 15. a rotating electric machine; 16. a support box; 17. a moving wheel; 18. a fixed base; 19. a travel bar; 20. a second slot; 21. a sliding plate; 22. a connecting box; 23. placing the plate; 24. a plug rod; 25. a slide bar; 26. a third slot is formed; 27. a telescopic rod; 28. a spring; 29. a fixed cavity; 30. inserting grooves; 31. a second writing board.
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.
The adjusting mechanism in the present embodiment can be applied to various teaching apparatuses, for example, the following literature teaching board is provided in the present embodiment, and the adjusting mechanism in the present embodiment can be used to adjust the following literature teaching board.
The literature teaching board is convenient for wiping the writing contents of the chalk in teaching. The literature teaching board comprises two movable upright posts and a writing board arranged between the two upright posts. Meanwhile, the literature teaching board further comprises a wiping roller which is transversely arranged between the two upright posts and attached to the surface of the writing board; a transmission mechanism is arranged in the upright post, and under the drive of external force, the transmission mechanism can form the up-and-down guiding movement and rotation of the wiping roller, so that the writing content of the chalk on the writing board can be wiped; the writing board mainly comprises two movable upright posts and a writing board arranged between the two upright posts. In order to ensure the stable standing and convenient movement of the whole literature teaching board, in the embodiment, foot beams are arranged below the two upright posts, two universal wheels are arranged at the lower parts of the foot beams, and the four universal wheels form four support legs of the literature teaching board and can roll to walk so as to realize the moving use of the literature teaching board; the literature teaching board also comprises a wiping roller which is transversely arranged between the two upright posts and is attached to the surface of the writing board; and a transmission mechanism is arranged in the upright post, and can form the up-and-down guiding movement and rotation of the wiping roller under the driving of external force. The chalk content on the writing board can be quickly wiped off by the up-and-down movement and the rotation of the wiping roller; in order to realize the action of the wiping roller, the upper half part of the upright post is hollow, a cavity is formed inside the upright post, and the transmission mechanism comprises a lead screw, a lead screw sliding block, a moving gear and a rack which are arranged in the cavity; the two lead screws respectively arranged in the cavities of the two upright posts are synchronously arranged and can rotate under the driving of external force and drive the lead screw sliding blocks screwed on the lead screws to move up and down; the moving gear is rotatably sleeved on the screw rod sliding block and meshed with the rack, and can move along with the screw rod sliding block and rotate simultaneously; the wiping roller is arranged between the two moving gears. Obviously, two ends of the wiping roller transversely arranged between the two upright posts need to penetrate through the outer walls of the upright posts so as to be connected to the moving gear positioned in the cavity, and therefore, the side wall of the assembling part of the upright posts is provided with a long hole for the two ends of the wiping roller to pass through and move up and down; the up-and-down movement of the wiping roller is realized by adopting the lead screw, and the rotation of the wiping roller can be realized while the wiping roller moves up and down by utilizing the meshing of the rack and the moving gear, so that the wiping function of the wiping roller can be well realized; in order to facilitate the improvement of the operation stability of the wiping roller, in this embodiment, the transmission mechanism further includes a linkage shaft located below the writing board and transversely installed between the two columns, two transverse gears fixedly installed at two ends of the linkage shaft, and a vertical gear fixedly connected to the lower end of the screw rod and engaged with the transverse gears. Synchronous transmission of the screw rods on the left side and the right side is realized through the linkage shaft, and the transformation of the rotation axis direction is realized through the transmission of the transverse gear and the vertical gear; a motor is arranged on one of the two transverse gears in a driving mode, namely an output rotating shaft of the motor is fixedly connected to one transverse gear in a sleeved mode, and the motor forms external force driving. In addition, a control switch and a storage battery which are electrically connected with the motor are arranged on the literature teaching board. The motor can forward or turn over through the control of the control switch, so that the wiping roller can move up and down. The operation and control adopt the action of the motor driving the wiping roller, so that the convenience of using the literature teaching board can be further improved; in order to improve the integral aesthetic feeling and safety of the literature teaching board, a beam fixedly connected between two upright posts is arranged below the writing board, and the linkage shaft can be arranged in an inner cavity of the beam in a penetrating way; wear to be equipped with in the wiping roller and remove even axle, the wiping roller links firmly on two removal gears through the both ends that remove even axle, can promote the firm intensity of wiping roller and the flexibility of assembly. The wiping roller can be made of various materials such as a brush roller, a felt roller and the like which can wipe the writing contents of the chalk.
Of course, the present embodiment can also be used for teaching devices with other structures. The following describes the adjusting mechanism according to the embodiment of the present application, which is not described in detail herein.
Referring to fig. 1-3, a mobile mathematics teaching device includes a placing plate 23, an adjusting mechanism and an erasing mechanism;
the adjusting mechanism comprises a vertical plate 2, a first threaded rod 5 is rotatably connected to the bottom in the vertical plate 2, the other end of the first threaded rod 5 penetrates through the vertical plate 2 and extends to the outside, two first movable sleeves 6 are sleeved on the first threaded rod 5 in a threaded manner, two ends of each first movable sleeve 6 are rotatably connected with rotating plates 7, the other ends of the four rotating plates 7 are respectively rotatably connected to two first writing plates 1, the two first writing plates 1 respectively penetrate through two ends of the vertical plate 2 and extend to the outside, first sliders 3 are fixedly connected to the upper side and the lower side of the adjacent end of each first writing plate 1, the four first sliders 3 are respectively and slidably connected to first sliding grooves 4, the four first sliding grooves 4 are respectively and fixedly arranged at four ends in the vertical plate 2, a second writing plate 31 is fixedly arranged on the front side of the vertical plate 2, so that the first threaded rod 5 can rotate to drive the two first writing plates 1 to move, the writing area is convenient to increase.
The threads at the two ends of the first threaded rod 5 are arranged oppositely, so that the two first movable sleeves 6 can move towards opposite directions simultaneously; the erasing mechanism comprises an erasing plate 10, a second sliding block 8 is fixedly connected to the erasing plate 10, the second sliding block 8 is connected to a second sliding groove 9 in a sliding mode, the second sliding groove 9 is fixedly arranged on the first writing plate 1, a fixed cavity 29 is fixedly arranged on the erasing plate 10, a telescopic rod 27 is fixedly connected in the fixed cavity 29, the other end of the telescopic rod 27 is fixedly connected to an inserting rod 24, the other end of the inserting rod 24 penetrates through the erasing plate 10 and extends to the outside, the inserting rod 24 is inserted into an inserting groove 30, and the inserting groove 30 is fixedly arranged on the first writing plate 1, so that the position of the erasing plate 10 can be conveniently fixed; a spring 28 is sleeved outside the telescopic rod 27, and two ends of the spring 28 are respectively and fixedly connected to the insertion rod 24 and the fixed cavity 29, so that the insertion rod 24 is pushed to move through the spring 28; the insertion rod 24 is fixedly connected with a sliding rod 25, the top end of the sliding rod 25 penetrates through the wiping plate 10 and extends to the outside, and a third groove 26 is fixedly formed in the wiping plate 10 at the position of the sliding rod 25, so that the position of the insertion rod 24 can be conveniently moved; erasing mechanisms are fixedly arranged on the first writing board 1 and the second writing board 31, so that handwriting on the first writing board 1 and the second writing board 31 can be erased conveniently; the placing plate 23 is fixedly connected with two push plates 11, the other ends of the two push plates 11 are respectively and fixedly connected to two ends of a second movable sleeve 12, the second movable sleeve 12 is arranged in a supporting box 16, two ends of the second movable sleeve 12 respectively penetrate through two side walls of the supporting box 16 in a sliding manner, the second movable sleeve 12 is in threaded sleeve connection with a second threaded rod 14, the top end of the second threaded rod 14 is rotatably connected to the top wall of the supporting box 16, the bottom end of the second threaded rod 14 is fixedly connected to the output end of a rotating motor 15, the rotating motor 15 is fixedly connected to the bottom wall of the supporting box 16, and the supporting box 16 is fixedly connected to a fixed base 18 so as to adjust the height of the device; the supporting box 16 is fixedly provided with first slots 13 at two ends of the second movable sleeve 12, so that the moving direction of the second movable sleeve 12 can be conveniently fixed; the two ends of the fixed base 18 are fixedly connected with moving rods 19, the top ends of the moving rods 19 penetrate through the connecting box 22 and extend into the connecting box 22, the top end of the moving rod 19 is fixedly connected with a sliding plate 21, the two ends of the sliding plate 21 penetrate through the two side walls of the connecting box 22 and extend to the outside, and second open grooves 20 are fixedly formed in the positions, located on the sliding plate 21, of the two side walls of the connecting box 22, so that the placing plate 23 can move more stably; four ends of 18 bottoms of unable adjustment bases all fixedly connected with move the wheel 17, are convenient for remove the device.
When the utility model is used, electrical components appearing in the application are externally connected with a power supply and a control switch when in use, firstly, the device is moved to a teaching position through a moving wheel 17, a rotating motor 15 drives a second threaded rod 14 to rotate, the second threaded rod 14 rotates to drive a second moving sleeve 12 to move, the second moving sleeve 12 moves to drive a push plate 11 to move, a placing plate 23 is pushed to move upwards, two ends of a sliding plate 21 at the top of a moving rod 19 slide on a second groove 20, so that the placing plate 23 can move more stably, the height of the device can be adjusted, the device is suitable for teaching with different heights, two first moving sleeves 6 are driven to move through the rotation of a first threaded rod 5, a rotating plate 7 is driven to rotate by the movement of a first moving sleeve 6, the rotating plate 7 rotates to push two first writing plates 1 to move towards two sides of a vertical plate 2, and a first sliding block 3 on the first writing plate 1 slides on a first sliding groove 4, it is more stable to be convenient for first clipboard 1 to move, thereby increase mathematical education's writing area, write the back full on first clipboard 1 and second clipboard 31, slide on third fluting 26 through pulling slide bar 25, telescopic link 27 contracts, spring 28 compresses, peg graft rod 24 and inserting groove 30 separation, remove and wipe board 10 up-and-down motion, second slider 8 on wiping board 10 slides on second spout 9, it is more stable to be convenient for wipe board 10 to move, wipe the board 10 motion and wipe the back with the writing on first clipboard 1 and the second clipboard 31, be in same water flat line with peg rod 24 and inserting groove 30, spring 28 elasticity promotes peg rod 24 and pegs graft in inserting groove 30, the position of wiping board 10 is fixed, be convenient for wipe oneself on first clipboard 1 and the second clipboard 31 fast.
The application has the advantages that:
1. according to the application, the first threaded rod rotates to drive the two first movable sleeves to move, the first movable sleeves drive the rotating plates to rotate, the rotating plates rotate to push the two first writing plates to move towards the two sides of the vertical plate, and the first sliding blocks on the first writing plates slide on the first sliding grooves, so that the writing area of mathematical teaching is increased;
2. according to the writing board, the sliding rod is pulled to slide on the third opening groove, the telescopic rod is contracted, the spring is compressed, the inserting rod is separated from the inserting groove, the erasing board moves up and down, after the writing on the first writing board and the second writing board is erased by the movement of the erasing board, the inserting rod and the inserting groove are positioned in the same horizontal line, the inserting rod is pushed by the elastic force of the spring to be inserted into the inserting groove, the position of the erasing board is fixed, and the first writing board and the second writing board can be rapidly erased by themselves;
3. this application drives the second threaded rod through rotating electrical machines and rotates, and the second threaded rod rotates and drives the motion of second movable sleeve, and the motion of second movable sleeve drives the push pedal motion, promotes and places board upward movement, and the sliding plate both ends at carriage release lever top slide on the second fluting to highly adjusting the device, be convenient for adapt to the teaching of co-altitude.
The rotating electrical machine 15 is a three-phase asynchronous motor of type YX3-100L2-4 and its associated power supply and circuitry.
It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.
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 (10)

1. The utility model provides a portable mathematical education device which characterized in that: comprises a placing plate (23), an adjusting mechanism and an erasing mechanism;
the adjusting mechanism comprises a vertical plate (2), a first threaded rod (5) is rotatably connected to the bottom in the vertical plate (2), the other end of the first threaded rod (5) penetrates through the vertical plate (2) and extends to the outside, two first movable sleeves (6) are sleeved on the first threaded rod (5) in a threaded manner, two ends of each first movable sleeve (6) are rotatably connected with rotating plates (7), the other ends of the four rotating plates (7) are respectively rotatably connected to two first writing plates (1), the two first writing plates (1) respectively penetrate through two ends of the vertical plate (2) and extend to the outside, first sliding blocks (3) are fixedly connected to the upper side and the lower side of the end, close to each other, of the two first writing plates (1), the four first sliding blocks (3) are all slidably connected to first sliding grooves (4), the four first sliding grooves (4) are respectively fixedly arranged at four ends in the vertical plate (2), and a second writing board (31) is fixedly arranged on the front side of the vertical board (2).
2. A mobile mathematical education device according to claim 1, wherein: the threads at the two ends of the first threaded rod (5) are arranged oppositely.
3. A mobile mathematical education device according to claim 1, wherein: the erasing mechanism comprises an erasing plate (10), a second sliding block (8) is fixedly connected to the erasing plate (10), the second sliding block (8) is connected to a second sliding groove (9) in a sliding mode, the second sliding groove (9) is fixedly arranged on a first writing plate (1), a fixed cavity (29) is fixedly arranged on the erasing plate (10), a telescopic rod (27) is fixedly connected to the inside of the fixed cavity (29), the other end of the telescopic rod (27) is fixedly connected to a plug rod (24), the other end of the plug rod (24) penetrates through the erasing plate (10) and extends to the outside, the plug rod (24) is plugged into a plug groove (30), and the plug groove (30) is fixedly arranged on the first writing plate (1).
4. A mobile mathematical education device according to claim 3 wherein: the telescopic rod (27) is sleeved with a spring (28), and two ends of the spring (28) are respectively and fixedly connected to the insertion rod (24) and the fixed cavity (29).
5. A mobile mathematical education device according to claim 3 wherein: the plug rod (24) is fixedly connected with a sliding rod (25), the top end of the sliding rod (25) penetrates through the wiping plate (10) and extends to the outside, and a third groove (26) is fixedly formed in the position, located on the sliding rod (25), of the wiping plate (10).
6. A mobile mathematical education device according to claim 1, wherein: the first writing board (1) and the second writing board (31) are both fixedly provided with erasing mechanisms.
7. A mobile mathematical education device according to claim 1, wherein: place two push pedal (11) of fixedly connected with on board (23), two push pedal (11) other end difference fixed connection is at second movable sleeve (12) both ends, second movable sleeve (12) are established in supporting box (16), second movable sleeve (12) both ends slide respectively and run through supporting box (16) both sides wall, second movable sleeve (12) screw thread cup joints on second threaded rod (14), second threaded rod (14) top is rotated and is connected at supporting box (16) roof, second threaded rod (14) bottom fixed connection is at rotating electrical machines (15) output, rotating electrical machines (15) fixed connection is on supporting box (16) diapire, supporting box (16) fixed connection is on unable adjustment base (18).
8. A mobile mathematical education device according to claim 7 wherein: and the supporting box (16) is positioned at two ends of the second movable sleeve (12) and is fixedly provided with a first open slot (13).
9. A mobile mathematical education device according to claim 7 wherein: the fixed base (18) both ends equal fixedly connected with carriage release lever (19), carriage release lever (19) top run through connecting box (22) and extend to connecting box (22) in, carriage release lever (19) top fixedly connected with sliding plate (21), sliding plate (21) both ends run through connecting box (22) both sides wall respectively and extend to the outside, it locates all fixed second fluting (20) that are equipped with to lie in sliding plate (21) on connecting box (22) both sides wall.
10. A mobile mathematical education device according to claim 7 wherein: four ends of the bottom of the fixed base (18) are fixedly connected with movable wheels (17).
CN202122807666.6U 2021-11-16 2021-11-16 Portable mathematical education device Active CN216231357U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122807666.6U CN216231357U (en) 2021-11-16 2021-11-16 Portable mathematical education device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122807666.6U CN216231357U (en) 2021-11-16 2021-11-16 Portable mathematical education device

Publications (1)

Publication Number Publication Date
CN216231357U true CN216231357U (en) 2022-04-08

Family

ID=80942013

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122807666.6U Active CN216231357U (en) 2021-11-16 2021-11-16 Portable mathematical education device

Country Status (1)

Country Link
CN (1) CN216231357U (en)

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