Teaching demonstration device with adjustable height

Abstract

A height-adjustable teaching demonstration device disclosed by the present invention comprises universal moving wheels, and further comprises a lifting assembly, a driving assembly and a cleaning assembly, the tops of the universal moving wheels are fixedly connected with a moving base, the top of the moving base is fixedly connected with a storage box, the lifting assembly comprises a supporting plate, and the supporting plate is fixedly connected with the driving assembly. The supporting plate is fixedly connected to the middle of the back bottom of the movable base. When height adjustment adaptive to the height of a teacher is needed, a driving motor is controlled to work, and when the driving motor works, the driving motor drives a ball nut pair to rotate, so that a lifting lead screw moves up and down on the outer side of the ball nut pair, and meanwhile the lifting lead screw drives a blackboard to ascend and descend; and meanwhile, guide blocks at the bottoms of the left side and the right side of the blackboard slide in guide rods at the bottom in the storage box, so that the blackboard is more stable during lifting, and the device can adapt to different heights of teachers to carry out adaptive height adjustment work.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching aids, and particularly to a teaching demonstration device with adjustable height. Background Art

[0002] A teaching demonstration device refers to a device or tool used to demonstrate, explain, and display various knowledge, principles, and skills during the teaching process. These devices are usually designed to help students understand abstract concepts or principles in an intuitive and vivid way, improving the teaching effect. The blackboard is an important channel for teachers to convey information to students. Through blackboard writing, teaching content and ideas can be clearly displayed. Although the blackboard does not have the dynamic demonstration effect of modern multimedia devices, it is still an important demonstration tool that can intuitively display teaching content.

[0003] During the daily use of the blackboard, chalk is needed to write on its surface, and then it needs to be cleaned as a whole after the class ends to prepare for the teacher of the next class. However, due to the different height levels of teachers, it is difficult for teachers of different heights to adapt during use, and this problem needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a teaching demonstration device with adjustable height to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A teaching demonstration device with adjustable height, including universal moving wheels, and further including a lifting assembly, a driving assembly, and a cleaning assembly. The top of the universal moving wheels is fixedly connected with a moving base, and the top of the moving base is fixedly connected with a storage box.

[0006] Among them, the lifting assembly includes:

[0007] A support plate, the support plate is fixedly connected to the middle of the bottom of the back of the moving base. The bottom of the support plate is fixedly connected with a driving motor. The driving motor has an output shaft, and the output shaft of the driving motor is fixedly connected with a ball nut pair. The outside of the ball nut pair is threadedly connected with a lifting lead screw. The front of the lifting lead screw is fixedly connected with a blackboard, and a cleaning groove is opened near the top of the front of the storage box.

[0008] According to the above technical solution, the driving assembly includes a water tank, an electric telescopic rod, an auxiliary lifting cylinder, a lifting plate, an auxiliary connecting plate, a cleaning frame, and a cleaning roller. The water tank is fixedly connected to the top of the front surface of the storage box. The electric telescopic rod is fixedly connected to the bottom of the water tank. The auxiliary lifting cylinder is fixedly connected to the inner bottom of the water tank. The electric telescopic rod has a telescopic end. The lifting plate is fixedly connected to the telescopic end of the electric telescopic rod. The auxiliary connecting plate is rotatably connected to the outside of the lifting plate. The cleaning frame is fixedly connected to the inside of the cleaning groove. The cleaning roller is rotatably connected to the inside of the cleaning frame.

[0009] According to the above technical solution, the cleaning assembly includes a squeezing frame, a squeezing roller, a rotating frame, a rotating arm plate, a driven frame, a spring, a cleaning sponge block, and a limiting slide bar. The squeezing frame is fixedly connected to the inner wall of the back surface of the water tank. The squeezing roller is rotatably connected to the inside of the squeezing frame. The rotating frame is fixedly connected to the top of the outside of the auxiliary lifting cylinder. The rotating arm plate is rotatably connected to the rotating frame. The driven frame is fixedly connected to the bottom of the rotating arm plate. The spring is fixedly connected to the back surface of the rotating arm plate. The cleaning sponge block is fixedly connected to the rear end of the spring. The limiting slide bar is fixedly connected to the front surface of the cleaning sponge block.

[0010] According to the above technical solution, the output shaft of the support plate penetrates through the bottom of the driving motor and extends above the driving motor and is fixedly connected to the bottom of the ball screw pair. The middle of the top of the back surface of the storage box is fixedly connected with a positioning plate. The top end of the ball screw pair is rotatably connected to the bottom of the positioning plate. A strip-shaped groove for the lifting lead screw to slide is formed in the middle of the back surface of the storage box.

[0011] According to the above technical solution, guide blocks are fixedly connected to the left and right sides of the inner bottom of the blackboard. Guide rods are fixedly connected to the left and right sides of the inner bottom of the storage box. The blackboard is slidably connected to the guide rods in the storage box through the guide blocks.

[0012] According to the above technical solution, a water inlet pipe is fixedly connected to the top right of the water tank. A drain pipe is fixedly connected to the middle of the bottom of the water tank.

[0013] According to the above technical solution, a moving groove communicating with the cleaning groove is formed in the top of the back surface of the water tank.

[0014] According to the above technical solution, the telescopic end of the electric telescopic rod penetrates through the bottom of the water tank and the bottom of the auxiliary lifting cylinder and extends into the auxiliary lifting cylinder and is fixedly connected to the bottom of the lifting plate. The side of the rotating arm plate close to the rotating frame is rotatably connected to the middle of the rotating frame.

[0015] According to the above technical solution, a buffer circular groove for the limiting slide bar to move is formed in the front surface of the rotating arm plate.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, when height adjustment according to the teacher's height is required, the driving motor is controlled to work. When the driving motor works, the driving motor drives the ball nut pair to rotate, causing the lifting screw rod to move up and down outside the ball nut pair. At the same time, the lifting screw rod drives the blackboard to move up and down. Meanwhile, the guide blocks at the bottoms of the left and right sides of the blackboard slide within the guide rods at the bottom of the storage box, making the blackboard more stable during lifting, so that the device can perform adaptive height adjustment according to the heights of different teachers;

[0017] Water is introduced into the water tank through the water inlet pipe outside the water tank. Subsequently, the electric telescopic rod is started. When the electric telescopic rod works, it controls the lifting plate to move downward within the auxiliary lifting cylinder, causing the lifting plate to pull the auxiliary connecting plate when moving downward. When the auxiliary connecting plate is stressed, it pulls the driven frame, causing the driven frame to pull the rotating arm plate. At the same time, the rotating arm plate rotates within the rotating frame, driving the cleaning sponge block to move synchronously. When the cleaning sponge block moves, it contacts the inner wall of the water tank, causing the inner wall of the water tank to squeeze the cleaning sponge block, compressing the spring. Meanwhile, the limit slide rod slides within the buffer circular groove in the rotating arm plate, causing the cleaning sponge block to move into the interior of the water tank. As the rotating arm plate rotates, the cleaning sponge block contacts the water below the interior of the water tank to soak the cleaning sponge block. Subsequently, the electric telescopic rod is controlled to drive the lifting plate to rise, causing the rotating arm plate to rotate upward within the rotating frame. During the rotation of the rotating arm plate, the rotating arm plate contacts the extrusion roller and is squeezed, causing the excessive water inhaled into the rotating arm plate to be squeezed out, making the cleaning effect of the cleaning sponge block better when cleaning the blackboard surface subsequently;

[0018] After the class is completed, the driving motor is controlled to work, causing the blackboard to be stored inside the storage box. During the process of the blackboard being stored in the storage box, the surface of the blackboard contacts and squeezes the cleaning sponge block, causing the cleaning sponge block to clean the surface of the blackboard. At the same time, when the blackboard moves downward, the cleaning roller within the cleaning frame rolls and rubs against the surface of the blackboard, enabling comprehensive cleaning of the blackboard surface;

[0019] After the cleaning sponge block cleans the surface of the blackboard, the electric telescopic rod is repeatedly controlled to drive the lifting plate to move up and down, causing the rotating arm plate to rotate within the rotating frame and immersing the dust - adhering part into the water in the water tank. During the rotation of the rotating arm plate, the cleaning sponge block contacts the inner wall of the water tank and is squeezed, causing the dust adhered to the cleaning sponge block to be cleaned by the water in the water tank. After cleaning, the cleaning sponge block contacts the extrusion roller, which can prevent the cleaning sponge block from inhaling too much water and prevent the cleaning sponge block from mildewing, enabling the device to have a self - cleaning function. The sewage after cleaning is discharged through the drain pipe at the bottom of the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the driving motor of the present invention;

[0023] Figure 3 is a schematic diagram of the inside of the storage box of the present invention;

[0024] Figure 4 is a schematic diagram of the cleaning tank of the present invention;

[0025] Figure 5 is a schematic diagram of the inside of the water tank of the present invention;

[0026] Figure 6 is a schematic diagram of the extrusion roller of the present invention;

[0027] Figure 7 is a schematic diagram of the lifting plate of the present invention;

[0028] Figure 8 is a schematic diagram of the rotating frame of the present invention;

[0029] Figure 9 is an exploded schematic diagram of the limit slide bar of the present invention.

[0030] In the figure: 1, universal moving wheel; 2, moving base; 3, storage box; 4, lifting assembly; 401, support plate; 402, driving motor; 403, lifting lead screw; 404, blackboard; 405, cleaning tank; 406, ball screw pair; 5, driving assembly; 501, water tank; 502, electric telescopic rod; 503, auxiliary lifting cylinder; 504, lifting plate; 505, auxiliary connecting plate; 506, cleaning frame; 507, cleaning roller; 6, cleaning assembly; 601, extrusion frame; 602, extrusion roller; 603, rotating frame; 604, rotating arm plate; 605, driven frame; 606, spring; 607, cleaning sponge block; 608, limit slide bar. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-4, the present invention provides a technical solution: an adjustable-height teaching demonstration device, including universal moving wheels 1, and further including a lifting assembly 4, a driving assembly 5 and a cleaning assembly 6. The top of the universal moving wheels 1 is fixedly connected to a moving base 2, and the top of the moving base 2 is fixedly connected to a storage box 3.

[0033] Among them, the lifting assembly 4 includes:

[0034] A support plate 401, the support plate 401 is fixedly connected to the middle of the bottom of the back of the moving base 2. A driving motor 402 is fixedly connected to the bottom of the support plate 401. The driving motor 402 has an output shaft. The output shaft of the driving motor 402 is fixedly connected to a ball nut pair 406. A lifting lead screw 403 is threadedly connected to the outside of the ball nut pair 406. A blackboard 404 is fixedly connected to the front of the lifting lead screw 403. A cleaning groove 405 is opened near the top of the front of the storage box 3.

[0035] The output shaft of the support plate 401 penetrates through the bottom of the driving motor 402 and extends above the driving motor 402 and is fixedly connected to the bottom of the ball nut pair 406. A positioning plate is fixedly connected to the middle of the top of the back of the storage box 3. The top of the ball nut pair 406 is rotatably connected to the bottom of the positioning plate. A strip-shaped groove for the lifting lead screw 403 to slide is opened in the middle of the back of the storage box 3.

[0036] Guide blocks are fixedly connected to the left and right sides of the inner bottom of the blackboard 404. Guide rods are fixedly connected to the left and right sides of the inner bottom of the storage box 3. The blackboard 404 is slidably connected to the guide rods inside the storage box 3 through the guide blocks.

[0037] When it is necessary to adjust the height according to the height of the teacher, control the driving motor 402 to work. When the driving motor 402 works, the driving motor 402 drives the ball nut pair 406 to rotate, so that the lifting lead screw 403 moves up and down on the outside of the ball nut pair 406. At the same time, the lifting lead screw 403 drives the blackboard 404 to lift. At the same time, the guide blocks at the bottom of the left and right sides of the blackboard 404 slide in the guide rods at the inner bottom of the storage box 3, making the blackboard 404 more stable when lifting, so that the device can adjust the height adaptively according to the height of different teachers.

[0038] Please refer to Figures 1-9, the present invention provides a technical solution: The driving component 5 includes a water tank 501, an electric telescopic rod 502, an auxiliary lifting cylinder 503, a lifting plate 504, an auxiliary connecting plate 505, a cleaning frame 506 and a cleaning roller 507. The water tank 501 is fixedly connected to the top of the front surface of the storage box 3. The electric telescopic rod 502 is fixedly connected to the bottom of the water tank 501. The auxiliary lifting cylinder 503 is fixedly connected to the inner bottom of the water tank 501. The electric telescopic rod 502 has a telescopic end. The lifting plate 504 is fixedly connected to the telescopic end of the electric telescopic rod 502. The auxiliary connecting plate 505 is rotatably connected to the outside of the lifting plate 504. The cleaning frame 506 is fixedly connected to the inside of the cleaning groove 405. The cleaning roller 507 is rotatably connected to the inside of the cleaning frame 506.

[0039] The cleaning component 6 includes a squeezing frame 601, a squeezing roller 602, a rotating frame 603, a rotating arm plate 604, a driven frame 605, a spring 606, a cleaning sponge block 607 and a limiting slide rod 608. The squeezing frame 601 is fixedly connected to the inner wall of the back surface of the water tank 501. The squeezing roller 602 is rotatably connected to the inside of the squeezing frame 601. The rotating frame 603 is fixedly connected to the outer top of the auxiliary lifting cylinder 503. The rotating arm plate 604 is rotatably connected to the rotating frame 603. The driven frame 605 is fixedly connected to the bottom of the rotating arm plate 604. The spring 606 is fixedly connected to the back surface of the rotating arm plate 604. The cleaning sponge block 607 is fixedly connected to the rear end of the spring 606. The limiting slide rod 608 is fixedly connected to the front surface of the cleaning sponge block 607.

[0040] A water inlet pipe is fixedly connected to the top of the right side of the water tank 501, and a drain pipe is fixedly connected to the middle of the bottom of the water tank 501.

[0041] A moving groove communicating with the cleaning groove 405 is formed in the top of the back surface of the water tank 501.

[0042] The telescopic end of the electric telescopic rod 502 penetrates through the bottom of the water tank 501 and the bottom of the auxiliary lifting cylinder 503 and extends into the auxiliary lifting cylinder 503 to be fixedly connected to the bottom of the lifting plate 504. The side of the rotating arm plate 604 close to the rotating frame 603 is rotatably connected to the middle of the rotating frame 603.

[0043] A buffer circular groove for accommodating the movement of the limiting slide rod 608 is formed in the front surface of the rotating arm plate 604.

[0044] Water is introduced into the water tank 501 through the water inlet pipe outside the water tank 501. Subsequently, the electric telescopic rod 502 is started. When the electric telescopic rod 502 works, it controls the lifting plate 504 to move downward in the auxiliary lifting cylinder 503, so that the lifting plate 504 pulls the auxiliary connecting plate 505 when moving downward. When the auxiliary connecting plate 505 is stressed, it pulls the driven frame 605, so that the driven frame 605 pulls the rotating arm plate 604. At the same time, the rotating arm plate 604 rotates in the rotating frame 603, driving the cleaning sponge block 607 to move synchronously. When the cleaning sponge block 607 moves, it contacts the inner wall of the water tank 501, and the inner wall of the water tank 501 squeezes the cleaning sponge block 607, causing the spring 606 to compress. At the same time, the limit slide rod 608 slides in the buffer circular groove in the rotating arm plate 604, so that the cleaning sponge block 607 moves to the inside of the water tank 501. As the rotating arm plate 604 rotates, the cleaning sponge block 607 contacts the water below the inside of the water tank 501 to soak the cleaning sponge block 607. Subsequently, the electric telescopic rod 502 is controlled to drive the lifting plate 504 to rise, so that the rotating arm plate 604 rotates upward in the rotating frame 603. During the rotation of the rotating arm plate 604, the rotating arm plate 604 contacts the extrusion roller 602 and is squeezed, so that the excessive water inhaled in the rotating arm plate 604 is squeezed out, making the cleaning effect of the cleaning sponge block 607 better when cleaning the surface of the blackboard 404 subsequently.

[0045] After the class is completed, the driving motor 402 is controlled to work, so that the blackboard 404 is stored in the storage box 3. During the process of storing the blackboard 404 in the storage box 3, the surface of the blackboard 404 contacts and squeezes the cleaning sponge block 607, so that the cleaning sponge block 607 cleans the surface of the blackboard 404. At the same time, when the blackboard 404 moves downward, the cleaning roller 507 in the cleaning frame 506 is used to roll-friction the surface of the blackboard 404, and the surface of the blackboard 404 can be comprehensively cleaned.

[0046] After the cleaning sponge block 607 cleans the surface of the blackboard 404, the electric telescopic rod 502 is repeatedly controlled to drive the lifting plate 504 to move up and down, so that the rotating arm plate 604 rotates in the rotating frame 603, and the part adhered with dust is immersed in the water in the water tank 501. During the rotation of the rotating arm plate 604, the cleaning sponge block 607 contacts the inner wall of the water tank 501 and is squeezed, so that the dust adhered to the cleaning sponge block 607 is cleaned by the water in the water tank 501. After cleaning, the cleaning sponge block 607 contacts the extrusion roller 602, which can prevent the cleaning sponge block 607 from inhaling too much water and prevent the cleaning sponge block 607 from mildewing, making the device have a self-cleaning function during use. The cleaned sewage is discharged through the drain pipe at the bottom of the water tank 501.

[0047] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0048] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A teaching demonstration device with adjustable height, comprising a universal movable wheel (1), characterized in that: It also comprises a lifting assembly (4), a driving assembly (5) and a cleaning assembly (6); the top of the universal movable wheel (1) is fixedly connected to a movable base (2); the top of the movable base (2) is fixedly connected to a storage box (3); Wherein, the lifting assembly (4) comprises: A support plate (401) is fixedly connected to the middle of the bottom of the back side of the mobile base (2); a driving motor (402) is fixedly connected to the bottom of the support plate (401); the driving motor (402) has an output shaft; the output shaft of the driving motor (402) is fixedly connected to a ball nut pair (406); the outer side of the ball nut pair (406) is threadedly connected to a lifting screw (403); the front side of the lifting screw (403) is fixedly connected to a blackboard (404); and a cleaning groove (405) is provided on the front side of the storage box (3) near the top.

2. The height-adjustable teaching demonstration device according to claim 1, characterized in that: The driving assembly (5) comprises a water tank (501), an electric telescopic rod (502), an auxiliary lifting cylinder (503), a lifting plate (504), an auxiliary connecting plate (505), a cleaning frame (506) and a cleaning roller (507); the water tank (501) is fixedly connected to the top of the front of the storage box (3); the electric telescopic rod (502) is fixedly connected to the bottom of the water tank (501); the auxiliary lifting cylinder (503) is fixedly connected to the inner bottom of the water tank (501); the electric telescopic rod (502) has a telescopic end; the lifting plate (504) is fixedly connected to the telescopic end of the electric telescopic rod (502); the auxiliary connecting plate (505) is rotatably connected to the outside of the lifting plate (504); the cleaning frame (506) is fixedly connected to the inside of the cleaning tank (405); and the cleaning roller (507) is rotatably connected to the inside of the cleaning frame (506).

3. The height-adjustable teaching demonstration device according to claim 2, characterized in that: The cleaning assembly (6) comprises an extrusion frame (601), an extrusion roller (602), a rotating frame (603), a rotating arm plate (604), a driven frame (605), a spring (606), a cleaning sponge block (607) and a limiting slide bar (608); the extrusion frame (601) is fixedly connected to the inner wall of the back side of the water tank (501); the extrusion roller (602) is rotatably connected to the inner side of the extrusion frame (601); the rotating frame (603) is fixedly connected to the top of the outer side of the auxiliary lifting cylinder (503); the rotating arm plate (604) is rotatably connected to the rotating frame (603); the driven frame (605) is fixedly connected to the bottom of the rotating arm plate (604); the spring (606) is fixedly connected to the back side of the rotating arm plate (604); the cleaning sponge block (607) is fixedly connected to the rear end of the spring (606); and the limiting slide bar (608) is fixedly connected to the front side of the cleaning sponge block (607).

4. The height-adjustable teaching demonstration device according to claim 3, characterized in that: The output shaft of the support plate (401) passes through the bottom of the drive motor (402) and extends to the top of the drive motor (402) to be fixedly connected to the bottom of the ball nut pair (406); a positioning plate is fixedly connected to the middle of the top of the back of the storage box (3); the top of the ball nut pair (406) is rotatably connected to the bottom of the positioning plate; and a strip groove for accommodating the sliding of the lifting screw (403) is opened in the middle of the back of the storage box (3).

5. The height-adjustable teaching demonstration device according to claim 4, characterized in that: The blackboard (404) is fixedly connected to guide blocks on the left and right sides of the bottom of the blackboard (404), and the storage box (3) is fixedly connected to guide rods on the left and right sides of the bottom of the blackboard (404). The blackboard (404) is slidably connected to the guide rods in the storage box (3) via the guide blocks.

6. The height-adjustable teaching demonstration device according to claim 5, characterized in that: A water inlet pipe is fixedly connected to the top of the right side of the water tank (501), and a drainage pipe is fixedly connected to the middle of the bottom of the water tank (501).

7. The height-adjustable teaching demonstration device according to claim 6, characterized in that: A movable groove connected to the cleaning groove (405) is provided on the top of the back side of the water tank (501).

8. The height-adjustable teaching demonstration device according to claim 7, characterized in that: The telescopic end of the electric telescopic rod (502) penetrates the bottom of the water tank (501) and the bottom of the auxiliary lifting cylinder (503) and extends into the auxiliary lifting cylinder (503) to be fixedly connected to the bottom of the lifting plate (504); the rotating arm plate (604) is rotatably connected to the middle of the rotating frame (603) at one side close to the rotating frame (603).

9. The height-adjustable teaching demonstration device according to claim 8, characterized in that: The front side of the rotating arm plate (604) is provided with a buffer circular groove for accommodating the movement of the limiting sliding rod (608).

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