Demonstration platform for teaching management

Abstract

The invention belongs to the technical field of teaching equipment, and particularly discloses a demonstration platform for teaching management, which comprises a guide box, a vertical rod, a guide rod, an observation cylinder, a first plane mirror and a second plane mirror, and is characterized in that the bottom of the vertical rod is in horizontal sliding fit with the guide box, and the upper part of the vertical rod is axially and slidably sleeved with a second sliding pipe; a second spring is arranged between the second sliding pipe and the lower part of the vertical rod; a first sliding pipe is transversely fixed to the surface of the second sliding pipe, a guide rod penetrates out of the first sliding pipe and is in axial sliding fit with the first sliding pipe, a third spring is arranged between one end of the guide rod and the first sliding pipe, and the other end of the guide rod is connected with an observation cylinder; the first plane mirror is connected with the top end of the observation cylinder, a second plane mirror is obliquely installed in the observation cylinder, and the observation cylinder, the first plane mirror and the second plane mirror jointly form a periscope structure. The movable teaching aid can move near a computer row, so that more students can see the teaching aid in the process of explaining and demonstrating the students by a teacher, and problems of the students can be explained in a targeted manner.

Description

Technical Field

[0001] This invention relates to the field of teaching equipment technology, specifically to a demonstration table for teaching management. Background Technology

[0002] When using existing equipment for computer teaching, rows of computers are used in the classroom. During the computer operation, students inevitably encounter various problems. The current method is for the teacher to walk next to the student and explain. This can only be done for one student at a time, and it is not easy for other students around to observe, which affects the efficiency of the explanation. After the teacher finishes explaining the theoretical knowledge on the podium, he cannot quickly explain and demonstrate the practical content for the students.

[0003] Currently, demonstration stations are fixed in one location and cannot be used to explain to students' actual operations. How to enable teachers to give efficient explanations and demonstrations to rows of students is a technical problem that needs to be solved.

[0004] In addition, the existing demonstration table is a device used by teaching administrators to place items and conduct teaching demonstrations. However, the existing demonstration table is of a fixed height, which is inconvenient for teaching administrators of different heights. Moreover, the demonstration table is large in size, takes up space when not in use, and is not easy to move. Summary of the Invention

[0005] This invention provides a demonstration platform for teaching management, which is designed to be movable near the computer row so that more students can see the presentation during the teacher's explanation and demonstration, and to provide targeted explanations for the problems that students encounter.

[0006] The present invention is achieved through the following technical solution: a demonstration table for teaching management, including a guide box, a vertical rod, a guide rod, an observation tube, a first plane mirror and a second plane mirror, wherein the bottom of the vertical rod is horizontally slidably engaged with the guide box, and the upper part of the vertical rod is axially slidably fitted with a second sliding tube, and a second spring is provided between the second sliding tube and the lower part of the vertical rod; The surface of the second slide tube is laterally fixed with the first slide tube. The guide rod passes through the first slide tube and slides axially with the first slide tube. A third spring is provided between one end of the guide rod and the first slide tube. The other end of the guide rod is connected to the observation cylinder. The observation tube has an L-shaped structure. The first plane mirror is connected to the top of the observation tube. A second plane mirror is installed obliquely inside the observation tube. The first plane mirror is used to receive external light and reflect it to the observer's field of vision. The second plane mirror is used to receive the original light emitted by the display screen and reflect it to the first plane mirror. The observation tube, the first plane mirror and the second plane mirror together form a periscope structure.

[0007] Compared with existing technologies, this solution has the following advantages and beneficial effects: In this solution, the bottom of the vertical rod slides horizontally with the guide box, allowing the demonstration table to move flexibly along the guide box. When a teacher needs to explain to students in different positions, they only need to push the vertical rod to slide the demonstration table to the target area, avoiding the cumbersome operation caused by frequent moving. It is especially suitable for classrooms, laboratories and other multi-seat layout scenarios. A single teacher can cover the demonstration needs of the whole class and improve teaching efficiency.

[0008] The second sliding tube at the top of the vertical rod slides axially with the vertical rod and is supported by a second spring. Teachers can quickly adjust the height of the first sliding tube (and the observation tube connected to it) by pressing or pulling the second sliding tube, adapting to the operating habits of teachers of different heights. The guide rod slides laterally with the first sliding tube, allowing the observation tube to be pushed and pulled laterally to adjust its lateral distance from the display screen and student seats (for example, when the display screen is offset, there is no need to move the entire demonstration table; simply sliding the guide rod is enough to align the observation tube with the target). The third spring can buffer lateral external forces (such as slight collisions) to prevent the observation tube from shifting due to external forces, thus reducing the adjustment frequency.

[0009] The periscope structure, consisting of an observation tube, a first plane mirror, and a second plane mirror, transmits light through secondary reflection: the second plane mirror receives the original light from the display screen and reflects it back to the first plane mirror, which then reflects the light to the teacher's field of vision. This eliminates the need for the teacher to bend down and get close to the display screen, effectively raising the screen's height and reducing physical strain on the teacher, thus improving focus during instruction. This solution also allows the demonstration station to be moved near the computer row, enabling more students to see the presentation and providing targeted explanations for any questions raised by students.

[0010] Furthermore, a universal joint is connected to the top of the observation tube, and the first plane mirror is fixed to the universal joint.

[0011] Beneficial effects: The universal rod in this solution facilitates the adjustment of the position of the first plane mirror, allowing the first and second plane mirrors to work together better and smoothly display the content on the screen onto the first plane mirror. This eliminates the need for teachers to bend over and look down at the students' screens, effectively improving the screen display and allowing surrounding students to see the content during explanations.

[0012] In this design, the gimbal features 360° horizontal rotation and arbitrary tilting and bending. After fixing the first plane mirror to the gimbal, the teacher can flexibly adjust the tilt angle (e.g., from 45° to 50° or 40°) and orientation (e.g., tilting left or right) of the first plane mirror by bending and rotating the gimbal. Compared to traditional fixed-installation plane mirrors, this design can more accurately align the reflected light from the second plane mirror. When the demonstration table slides to different positions, the display screen angle shifts slightly, or the teacher's observation angle changes due to changes in height or posture, there is no need to move the entire observation tube or demonstration table. Simply adjusting the gimbal allows the first plane mirror to accurately receive the reflected light from the second plane mirror, avoiding blurry or missing images due to light deviation, and significantly improving the convenience and accuracy of observation.

[0013] Furthermore, the upper and lower parts of the vertical rod are respectively threaded with a first nut, the second spring is sleeved on the outside of the vertical rod, and the two ends of the second spring abut against the bottom of the second slide tube and the first nut located at the lower part of the vertical rod, respectively.

[0014] Beneficial effects: In this design, the first nut at the bottom of the vertical plate provides a support point for the installation of the second spring. By abutting the bottom of the spring with the top of the nut, the axial position of the spring on the vertical rod is firmly limited. The first nut at the bottom of the vertical rod can indirectly limit the maximum compression of the second spring by adjusting its thread position on the vertical rod. When the teacher presses down on the second slide tube, the spring is compressed until the bottom of the second slide tube approaches the top of the first nut. At this point, the nut will prevent the second slide tube from moving further down, thus preventing the spring from exceeding its safe compression stroke.

[0015] In addition, the first nut at the top of the vertical rod in this design is also threadedly connected to the vertical rod. This can limit the axial upward movement of the second slide tube. Furthermore, by adjusting its thread position on the vertical rod, the first nut can limit and lock the height of the adjusted second slide tube, ensuring the stability of the observation tube after adjusting its lifting position.

[0016] The first nut at the top of the vertical rod is threaded onto the rod and serves as the initial height positioning point for the second slide tube. Before using the demonstration table, the teacher can rotate the first nut to a suitable position on the vertical rod according to their own height or the needs of the teaching scenario. As the second slide tube slides upward along the vertical rod, its top abuts against the bottom of the first nut, quickly determining the initial height of the observation tube (e.g., suitable for most teachers' eye level). This eliminates the need for repeated height adjustments each time, simplifying the operation process. It is especially suitable for new teachers or when temporarily changing demonstration tables, helping users get started quickly and reducing preparation time. Simultaneously, the upper nut prevents the second slide tube from detaching from the top of the vertical rod due to excessive spring force or accidental upward sliding, avoiding damage from a fall and improving safety.

[0017] Furthermore, a guide rod nut is threaded onto the guide rod, and a third spring is sleeved on the outside of the guide rod, with both ends of the third spring abutting against the guide rod nut and the end of the first slide tube, respectively.

[0018] Beneficial effects: In this design, the third spring is firmly fixed within a designated area of ​​the guide rod (between the guide rod nut and the end of the first slide tube) by abutting against the end of the guide rod nut. Even if the teacher frequently pushes and pulls the observation tube laterally, or if the demonstration table experiences bumps while sliding along the guide box, the third spring will not shift or tilt, maintaining elastic support for the guide rod. This ensures reliable reset function when the guide rod slides axially along the first slide tube, preventing instability or jamming of the observation tube's lateral position due to spring failure.

[0019] Furthermore, the observation tube is equipped with a lifting unit and an adsorption unit. The adsorption unit includes an air pump and a frame. The air pump and the frame are connected by a pipe. The frame is hollow inside and has multiple through holes on its inner side. The frame is installed at the bottom of the lifting unit, and the lifting unit can drive the frame to move up and down.

[0020] Beneficial effects: In this solution, the card frame is hollow inside and has multiple through holes on the inner side. After being connected to the air pump through a pipe, it forms a multi-point synchronous adsorption structure. When the air pump starts to pump air, a negative pressure is formed in the hollow cavity of the card frame. The negative pressure is evenly applied to the surface of the adsorbed device (such as a keyboard or small teaching instrument) through multiple through holes, avoiding the device shifting or falling off due to uneven force in traditional single-point adsorption.

[0021] The lifting unit can move the adsorption unit (and the adsorption equipment) up and down along the direction of the observation tube. The keyboard can be raised by the lifting unit, making it more convenient for teachers to operate and avoiding fatigue in the waist and neck caused by bending over. If the height of the observation tube is adjusted due to teaching needs (such as by adjusting the vertical rod slide tube), the lifting unit can adjust the height of the adsorption unit simultaneously to ensure that the equipment operating height and observation height are always matched, thus improving the comfort of operation.

[0022] Furthermore, the lifting unit includes a sliding rod, a guide tube, and a telescopic airbag. The guide tube is fixedly connected to the outside of the observation tube. The sliding rod and the guide tube are coaxially and vertically slidingly engaged. The upper and lower parts of the sliding rod are respectively connected to a second nut and a sliding rod nut. A fourth spring is provided between the sliding rod nut and the guide tube. The telescopic airbag is sleeved between the second nut and the guide tube. The telescopic airbag is connected to an airbag, and the telescopic airbag can be inflated by pressing the airbag. A one-way valve is provided on the pipeline between the telescopic airbag and the airbag or at the air outlet of the airbag; a pressure relief valve is provided on the side wall of the telescopic airbag; the clip frame is connected to the bottom of the slide rod.

[0023] Beneficial effects: The slide rod and guide tube slide vertically and are coaxially connected. During the lifting and lowering process, the slide rod always moves along the axis of the guide tube. The guide tube's wrapping support for the slide rod can reduce the lateral swaying of the slide rod during the lifting and lowering process, further improving the stability of the adsorption equipment and ensuring that the equipment does not deviate when the teacher operates it.

[0024] In this design, when the telescopic airbag is inflated, it will exert a thrust on the second nut on the upper part of the slide rod, which will cause the slide rod connected to the second nut to rise. At the same time, the second nut can also prevent the slide rod from coming off the top of the guide tube. When the telescopic airbag is deflated, the slide rod will fall back to its original position under the action of gravity and the fourth spring.

[0025] The fourth spring is sleeved on the outside of the slide rod, with its two ends abutting against the slide rod nut and the guide tube respectively, which can buffer the impact force when the slide rod is raised and lowered.

[0026] In this design, the telescopic airbag is fitted between the second nut and the guide tube. It is inflated by pressing the airbag: when pressed, gas enters through the tubing, inflating the airbag and pushing the sliding rod upwards along the guide tube, raising the frame (and equipment); when the airbag is released, a one-way valve prevents gas backflow, keeping the airbag inflated and the sliding rod stable at the target height. This design eliminates the need for wrenches, knobs, or other tools, allowing teachers to perform the inflation operation with one hand. The height adjustment is quick and convenient, suitable for classroom scenarios where frequent height adjustments are required, reducing operation time and improving teaching efficiency.

[0027] The pressure relief valve on the side wall of the telescopic airbag allows for precise descent. When a reduction in height is needed, gently press the pressure relief valve to slowly release the gas inside the telescopic airbag, and the slide bar descends smoothly under the action of gravity and the fourth spring.

[0028] Furthermore, a rubber pad is provided on the inner side of the card frame, and multiple through holes are provided on the rubber pad. The through holes on the rubber pad correspond one-to-one with and overlap with the through holes on the card frame.

[0029] Beneficial effects: The rubber pad in this solution possesses excellent flexibility and elasticity. When the card frame adsorbs equipment (such as keyboards or small instruments), the rubber pad can deform according to the subtle shape of the equipment surface, tightly adhering to the surface and filling the gaps between the traditional rigid card frame and the equipment. For example, when adsorbing a keyboard with curved edges, the rubber pad can wrap around the keyboard edges, preventing air from entering the hollow cavity of the card frame through gaps. This ensures that a stable negative pressure can be formed in the cavity after the air pump draws air, avoiding the negative pressure leakage and decreased adsorption force problems caused by the loose fit of traditional rigid card frames. This makes the equipment more securely fixed, and the equipment will not shift even during frequent operation (such as typing on the keyboard) or when the demonstration table is moved.

[0030] Furthermore, the rubber pad can protect the adsorption equipment, preventing wear caused by rigid contact. The through holes on the rubber pad correspond one-to-one with the through holes on the card frame, forming an unobstructed airflow channel. When the air pump draws air, the negative pressure can be evenly applied to the surface of the equipment through the overlapping through holes, avoiding insufficient local negative pressure caused by misalignment of the through holes, which would weaken the adsorption force.

[0031] Furthermore, a handle is connected to the end of the guide rod away from the observation tube.

[0032] Beneficial effects: The handle design provides a clear and stable grip structure for teachers to adjust the lateral position of the guide rod, making operation more convenient.

[0033] Furthermore, a slider is connected to the bottom of the vertical rod, a slide plate is connected to the bottom of the slider, a guide wheel is rotatably connected to the bottom of the slide plate, and a guide rail is provided on the bottom wall of the guide box, with the guide wheel slidingly engaging with the guide rail.

[0034] Beneficial effects: In this solution, the guide wheel connected to the bottom of the slide plate rotates and forms a rolling friction engagement with the guide rail on the bottom wall of the guide box. Compared with the traditional sliding friction structure where the slider slides directly with the guide rail, the rolling friction resistance is greatly reduced. When the teacher needs to slide the demonstration table from the front row of the classroom to the back row of students, only a small pushing force is required, and the guide wheel can roll smoothly along the guide rail, moving the entire demonstration table. This avoids the problem of movement jamming and the need for both hands to push due to excessive resistance in the traditional sliding structure.

[0035] The guide rails on the bottom wall of the guide box provide directional constraints for the guide wheels, ensuring that the demonstration platform moves along the direction defined by the guide rails and guaranteeing the smoothness of the movement.

[0036] Furthermore, a first spring is connected to both sides of the guide box, and moving the slide plate can make both ends of the slide plate contact the first springs on both sides of the guide box respectively.

[0037] Beneficial effects: The first springs connected to both sides of the guide box in this solution can provide a two-way buffer effect for the sliding of the skateboard. When the teacher pushes the skateboard (driving the demonstration table) along the guide rail to the end of the guide box, the two ends of the skateboard will first contact the first spring on the corresponding side. The first spring absorbs the impact force of movement through compression deformation, avoiding the skateboard from directly colliding rigidly with the side wall of the guide box, thereby extending the service life of the components and reducing the frequency of equipment maintenance. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an embodiment of a teaching management demonstration platform according to the present invention; Figure 2 This is a schematic diagram of the guide box in an embodiment of a teaching management demonstration table according to the present invention; Figure 3 This is a longitudinal cross-sectional view of the observation tube in an embodiment of a teaching management demonstration platform of the present invention.

[0039] The attached diagram shows the markings and corresponding component names: Fastening screw 1, First spring 2, Guide box 3, Guide wheel 4, Slide plate 5, Slider 6, Adjusting screw 7, First nut 8, Second spring 9, Connecting frame 10, Airbag 11, Connecting plate 12, Handle 13, Guide rod 14, Guide rod nut 141, Third spring 15, Connecting tube 16, First slide tube 17, Second slide tube 18, Vertical rod 19, Universal rod 20, First plane mirror 21, Observation tube 22, Slide rod 23, Slide rod nut 231, Second nut 24, Telescopic airbag 25, Air pump 26, Guide tube 27, Vent tube 28, Fourth spring 29, Clip frame 30, Second plane mirror 31. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0041] As one embodiment of this application, such as Figure 1 As shown, this embodiment provides a demonstration platform for teaching management, including a guide box 3, a vertical rod 19, a guide rod 14, an observation tube 22, a first plane mirror 21, and a second plane mirror 31. The bottom of the vertical rod 19 is horizontally slidably fitted with the guide box 3, and the upper part of the vertical rod 19 is axially slidably fitted with a second slide tube 18. A second spring 9 is provided between the second slide tube 18 and the lower part of the vertical rod 19. In this embodiment, the upper and lower parts of the vertical rod 19 are respectively threaded with a first nut 8, and the second spring 9 is fitted on the outside of the vertical rod 19. The two ends of the second spring 9 abut against the bottom of the second slide tube 18 and the first nut 8 located at the lower part of the vertical rod 19, respectively. The surface of the second slide tube 18 is laterally fixed with the first slide tube 17. The guide rod 14 passes through the first slide tube 17 and slides axially with the first slide tube 17. A third spring 15 is provided between one end of the guide rod 14 and the first slide tube 17. The other end of the guide rod 14 is connected to the observation tube 22. In this embodiment, the other end of the guide rod 14 is fixedly connected to the connecting frame 10. The connecting frame 10 and the guide rod 14 can be fixed by welding, bolting, or threaded connection. The guide rod 14 is fixed to the right side of the observation tube 22 by bolting or other means (such as welding) through the connecting frame 10. In this embodiment, combined with Figure 1 and Figure 3As shown, the observation tube 22 has an L-shaped structure. The first plane mirror 21 is connected to the top of the observation tube 22. The second plane mirror 31 is installed obliquely inside the observation tube 22. The first plane mirror 21 is used to receive external light and reflect it to the observer's field of vision. The second plane mirror 31 is used to receive the original light emitted by the display screen and reflect it to the first plane mirror 21. The observation tube 22, the first plane mirror 21 and the second plane mirror 31 together form a periscope structure.

[0042] In one embodiment, such as Figure 1 As shown, a universal rod 20, made of carbon steel, is bolted to the top of the observation tube 22. A first plane mirror 21 is fixed to the universal rod 20, which has the characteristics of 360° horizontal rotation and arbitrary angle pitch and bending, thus facilitating the adjustment of the tilt angle of the first plane mirror 21. This allows the first plane mirror 21 to cooperate with the second plane mirror 31, displaying the content of the screen onto the first plane mirror 21.

[0043] In one embodiment, the first slide tube 17 and the second slide tube 18 are snap-fit ​​connected or welded together. In this embodiment, the first slide sleeve and the second slide tube 18 are connected by snap-fit. Two symmetrical snap-fits are fixed on the outside of the second slide tube 18. The first slide tube 17 has snap holes on its upper and lower sides. The snap-fits on the second slide tube 18 are snapped into the snap holes of the first slide tube 17 to achieve the connection between the two.

[0044] In one embodiment, a guide rod nut 141 is threaded onto the guide rod 14. In this embodiment, the guide rod nut 141 is threaded onto the right side of the guide rod 14. A third spring 15 is sleeved on the outside of the guide rod 14, and the two ends of the third spring 15 abut against the guide rod nut 141 and the end of the first slide tube 17, respectively.

[0045] In one embodiment, such as Figure 1 As shown, the observation cylinder 22 is equipped with a lifting unit and an adsorption unit. The adsorption unit includes an air pump 26 and a frame 30. The air pump 26 is installed on the left side of the observation cylinder 22, and the air pump 26 and the frame 30 are connected by a pipe. In this embodiment, the air pump 26 and the frame 30 are connected by a vent pipe 28. The frame 30 is hollow inside, and multiple through holes are opened on the inner side of the frame 30. When the air pump 26 starts to pump air, a negative pressure is formed in the hollow cavity of the frame 30. The negative pressure is evenly applied to the adsorbed device (such as a keyboard) through the multiple through holes. The frame 30 is installed at the bottom of the lifting unit by bolts. The lifting unit can drive the frame 30 to move up and down, thereby driving the adsorption device to move up and down. In this embodiment, the length of the vent pipe 28 can accommodate the up and down movement of the frame 30.

[0046] In one embodiment, a rubber pad is provided on the inner side of the card frame 30. The rubber pad is fixed to the inner side of the card frame 30 by adhesive or screws. Multiple through holes are provided on the rubber pad. The through holes on the rubber pad correspond one-to-one with the through holes on the card frame 30 and overlap. The rubber pad can improve the adsorption effect of the card frame 30 on the device.

[0047] In one embodiment, such as Figure 1 As shown, the lifting unit includes a slide rod 23, a guide tube 27, and a telescopic airbag 25. The guide tube 27 is fixedly connected to the outside of the observation tube 22. In this embodiment, the guide tube 27 is fixed to the observation tube 22 by bonding or other means. The slide rod 23 and the guide tube 27 are coaxially and vertically slidingly engaged. The upper and lower parts of the slide rod 23 are respectively connected to a second nut 24 and a slide rod nut 231. In this embodiment, both the second nut 24 and the slide rod nut 231 are threadedly connected to the slide rod 23. A fourth spring 29 is provided between the slide rod nut 231 and the guide tube 27. The fourth spring 29 is sleeved on the outside of the slide rod 23, and its two ends abut against the guide tube 27 and the slide rod nut 231, respectively.

[0048] The telescopic airbag 25 is sleeved between the second nut 24 and the guide tube 27; the telescopic airbag 25 is connected to the airbag 11. In this embodiment, the telescopic airbag 25 and the airbag 11 are connected by a connecting tube 16. The two are connected through the connecting tube 16. The telescopic airbag 25 can be inflated by pressing the airbag 11. A one-way valve is installed on the pipeline between the telescopic airbag 25 and the airbag 11 or at the air outlet of the airbag 11, so that gas can only enter the telescopic airbag 25 from the direction of the airbag 11 and cannot flow back, thereby ensuring the expansion state of the telescopic airbag 25; a pressure relief valve is installed on the side wall of the telescopic airbag 25 to facilitate the depressurization and release of gas inside the telescopic airbag 25, thereby causing the telescopic airbag 25 to retract downward and reduce the height of the slide rod 23, and thus reduce the height of the clamping frame 30; the bottom of the clamping frame 30 and the slide rod 23 are connected by bolts.

[0049] In this embodiment, when the telescopic airbag 25 is inflated, it will exert a thrust on the second nut 24 on the upper part of the slide rod 23, thereby causing the slide rod 23 connected to the second nut 24 to rise; when the telescopic airbag 25 is deflated, the slide rod 23 will descend and reset under the action of gravity and the fourth spring 29.

[0050] When the airbag 11 is pressed, gas enters the telescopic airbag 25 through the pipeline. The airbag 11 expands, pushing the slide rod 23 upward along the guide tube 27, which in turn raises the frame 30 (and the equipment). After the airbag 11 is released, the one-way valve prevents gas backflow, the telescopic airbag 25 remains inflated, and the slide rod 23 remains stable at the target height. The pressure relief valve on the side wall of the telescopic airbag 25 allows for precise descent. When a lowering is needed, gently press the pressure relief valve, and the gas inside the telescopic airbag 25 is slowly released. The slide rod 23 descends smoothly under the action of gravity and the fourth spring 29.

[0051] In one embodiment, such as Figure 1 As shown, a handle 13 is connected to the end of the guide rod 14 away from the observation tube 22. Specifically, in this embodiment, a connecting plate 12 is vertically fixed to the end of the guide rod 14 away from the observation tube 22. The connecting plate 12 is threadedly connected to the guide rod 14. The handle 13 is located on the right side of the connecting plate 12. The handle 13 can also be threadedly connected to the guide rod 14 or screwed, or the handle 13 can be directly fixed to the right end of the connecting plate 12 by screws.

[0052] In this embodiment, the airbag 11 is fixed to the lower part of the connecting plate 12, and the connecting plate 12 provides an installation position for the airbag 11.

[0053] In one embodiment, such as Figure 1 As shown, a slider 6 is connected to the bottom of the vertical rod 19. In this embodiment, the vertical rod 19 and the slider 6 are fixed together by an adjusting screw 7. Figure 2 As shown, the top of the guide box 3 has an opening for the horizontal movement of the slider 6, ensuring smooth horizontal movement of the slider 6. The bottom of the slider 6 is connected to a slide plate 5, and the bottom of the slide plate 5 is rotatably connected to multiple sets of evenly spaced guide wheels 4. The bottom wall of the guide box 3 is provided with a guide rail, and the guide wheels 4 slide in cooperation with the guide rail.

[0054] In this embodiment, fastening screws 1 are installed on both sides of the bottom of the guide and the device, which are used to fix the entire device to the ground later.

[0055] In one embodiment, such as Figure 1 As shown, both sides of the guide box 3 are connected to the first spring 2. Moving the slide plate 5 allows both ends of the slide plate 5 to contact the first spring 2 on both sides of the guide box 3 respectively. The first spring 2 acts as a buffer for the slide plate 5.

[0056] In practice, a plate can be welded to the end of the first spring 2, and a rubber pad can be glued on the plate. This increases the contact area between the plate and the slide plate 5, and the rubber pad can further reduce the impact on the slide plate 5, thus protecting the slide plate 5.

[0057] The specific implementation process is as follows: First, fix the guide box 3 to the ground with the fastening screw 1, so that the guide box 3 forms a guide rail, allowing the demonstration platform to slide along the guide box 3. If any student has a question, slide the demonstration platform to the corresponding position. Then, the teacher holds the handle 13 and turns it left and right, so that the guide rod 14 drives the observation tube 22 to rotate along the vertical rod 19, thereby causing the observation tube 22 to swing and adjust the circumferential position of the observation tube 22. When the teacher holds the handle 13 and moves it up and down, the height position of the observation tube 22 can be adjusted. When the teacher holds the handle 13 and moves the guide rod 14 left and right along the first sliding tube 17, the horizontal position of the observation tube 22 will be adjusted, so that the observation tube 22 can be aligned with the display screen.

[0058] By bending the universal rod 20 beforehand and adjusting the angle of the first plane mirror 21, the content on the screen is displayed on the first plane mirror 21 through the cooperation of the first plane mirror 21 and the second plane mirror 31. This eliminates the need for the teacher to bend over and look down at the students' screens, effectively improving the screen display. During the explanation, the surrounding students can also see the screen. At the same time, the clip frame 30 is clipped onto the keyboard. The suction generated by the air pump 26 positions the keyboard within the clip frame 30. Then, the airbag 11 is squeezed to inflate the telescopic airbag 25, thereby raising the slider 23 and simultaneously raising the keyboard. This makes it more convenient for the teacher to operate the device. When explaining and demonstrating to students from different positions, the teacher only needs to move the demonstration table to the designated position, thus increasing the efficiency of the teacher's explanation and demonstration.

[0059] The present invention uses the guide box 3 to provide guidance, allowing the demonstration platform to move near the computer row so that more students can see it during the teacher's explanation and demonstration, and the teacher can provide targeted explanations for the students' questions. The observation tube 22, which is equivalent to a periscope, together with the first plane mirror 21 and the second plane mirror 31, can display the content on the computer monitor. The position of the observation tube 22 can be controlled by sliding or swinging the guide rod 14 to observe the content on the monitor.

[0060] The periscope structure allows all students in the surrounding area to see the keyboard. The suction force of the air pump 26 on the card frame 30 provides suction to the keyboard, and the keyboard is lifted by the cooperation of the airbag 11 and the telescopic airbag 25. This makes it more convenient for the teacher to demonstrate. This invention is a track-type demonstration stand, which can be used for computer-based demonstrations, improving the accuracy of the demonstration and enhancing the presentation effect.

[0061] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A demonstration table for teaching management, characterized by comprising: The utility model provides a portable periscope, including guide box, vertical pole, guide rod, observation cylinder, first plane mirror and second plane mirror, the bottom of vertical pole and guide box horizontal sliding fit, the upper portion of vertical pole axial sliding sleeve second slide pipe is equipped with between second slide pipe and the lower part of vertical pole second spring, The surface of second slide pipe is fixed with first slide pipe laterally, guide rod passes out first slide pipe and is axially slid with first slide pipe, one end of guide rod is equipped with third spring between guide rod and first slide pipe, the other end of guide rod is connected with observation cylinder, The observation cylinder is L-shaped structure, first plane mirror is connected with the top of observation cylinder, second plane mirror is installed in observation cylinder and is inclined, first plane mirror is used to receive external light and reflect to the field of view of observer, second plane mirror is used to receive the original light of display screen and reflect to first plane mirror, observation cylinder, first plane mirror and second plane mirror form periscope structure together.

2. The demonstration table for teaching management according to claim 1, characterized in that, The top of observation cylinder is connected with universal bar, and the first plane mirror is fixed on the universal bar.

3. The demonstration table for teaching management according to claim 1, characterized in that, The upper portion and the lower portion of the vertical pole are respectively threadedly connected with first nuts, the second spring is sleeved outside the vertical pole, and the two ends of the second spring are respectively abutted against the bottom of the second slide pipe and the first nut located at the lower portion of the vertical pole.

4. The demonstration table for teaching management according to claim 1, characterized in that, The guide rod nut is threadedly connected to the guide rod, the third spring is sleeved outside the guide rod, and the two ends of the third spring are respectively abutted against the guide rod nut and the end of the first slide pipe.

5. The presentation station of claim 1, wherein, The observation cylinder is provided with a lifting unit and an adsorption unit, the adsorption unit includes a gas pump and a clamping frame, the gas pump is in communication with the clamping frame through a pipeline, the clamping frame is hollow inside, a plurality of through holes are formed in the inner side of the clamping frame, the clamping frame is installed at the bottom of the lifting unit, and the lifting unit can drive the clamping frame to move up and down.

6. The demonstration table for teaching management according to claim 5, wherein The lifting unit includes a sliding rod, a guide pipe and a telescopic air bag, the guide pipe is fixedly connected to the outside of the observation cylinder, the sliding rod is coaxially and vertically slidably connected to the guide pipe, the upper portion and the lower portion of the sliding rod are respectively connected with a second nut and a sliding rod nut, a fourth spring is arranged between the sliding rod nut and the guide pipe, and the telescopic air bag is sleeved between the second nut and the guide pipe; the telescopic air bag is communicated with an air bag, and the telescopic air bag can be inflated by pressing the air bag; A one-way valve is arranged on the pipeline between the telescopic air bag and the air bag or at the air outlet of the air bag, and a pressure relief valve is arranged on the side wall of the telescopic air bag; the clamping frame is connected to the bottom of the sliding rod.

7. The demonstration table for teaching management according to claim 5, wherein A rubber pad is arranged on the inner side of the clamping frame, a plurality of through holes are formed in the rubber pad, and the through holes in the rubber pad correspond to and coincide with the through holes in the clamping frame.

8. The demonstration table for teaching management according to claim 1, characterized in that, The end of the guide rod away from the observation cylinder is connected with a handle.

9. The demonstration table for teaching management according to any one of claims 1-8, characterized in that, The bottom of the vertical pole is connected with a sliding block, the bottom of the sliding block is connected with a sliding plate, the bottom of the sliding plate is rotatably connected with a guide wheel, a guide rail is arranged on the bottom wall of the guide box, and the guide wheel is slidably connected with the guide rail.

10. The presentation station of claim 9, wherein, Two first springs are connected to two sides of the guide box, and moving the sliding plate can make two ends of the sliding plate contact the first springs on two sides of the guide box respectively.

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