Adjustable specimen display device for biological teaching

Abstract

The invention discloses an adjustable specimen display device for biological teaching, which is characterized by comprising a horizontally arranged base, a mounting rack arranged above the base through a lifting assembly, a transparent specimen frame arranged on the mounting rack and a detail magnifying assembly arranged on the front side of the mounting rack, the invention relates to the technical field of teaching aids, the display angle of the transparent specimen frame can be flexibly adjusted through the rotary positioning assembly, multi-angle locking is achieved, a teacher can conveniently explain the structural characteristics of different parts of a specimen, all students can clearly observe the structural characteristics, and the teaching effect is improved; the detail magnifying assembly can adjust the position and the height of the magnifying lens through rotation and lifting, the magnifying lens can be accurately aligned with the fine structure of the specimen for magnifying, magnifying lenses with different magnifying times can be replaced, the observation requirements of different specimens such as plants, animals and microorganisms can be met, and the problem that the fine structure is difficult to see clearly with naked eyes is solved.

Description

Technical Field

[0001] This invention relates to the field of teaching aids technology, specifically an adjustable specimen display device for biology teaching. Background Technology

[0002] In biology teaching, physical specimens are important teaching tools to help students intuitively understand the morphology and structure of organisms. The traditional method of specimen display usually involves fixing the specimens in display cases or specimen bottles and displaying them on the podium or display rack. This method has obvious drawbacks: First, the angle of specimen display is fixed, making it difficult for students in the back row or on the side to see the whole specimen and its dorsal features. Second, for small specimens or the fine details of specimens (such as insect mouthparts, plant stamens, etc.), students cannot observe them closely and in detail, which affects the teaching effect. Furthermore, the height of the display device is usually not adjustable, which cannot meet the needs of teachers of different heights or the observation lines of different classrooms.

[0003] Therefore, there is an urgent need for a specialized teaching display device that can display specimens from multiple angles, has local magnification capabilities, and allows for flexible adjustment of the overall height, in order to enhance the intuitiveness and interactivity of biological specimen teaching. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an adjustable specimen display device for biological teaching, which mainly solves the technical problems of existing specimen display methods, such as limited observation angles, difficulty in identifying details, and poor device flexibility.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides an adjustable specimen display device for biological teaching, comprising a horizontally arranged base, a mounting frame mounted above the base via a lifting component, a transparent specimen frame mounted on the mounting frame, and a detail magnification component mounted on the front side of the mounting frame. The mounting frame is integrally formed from mutually perpendicular lower supports and side supports. An upper support located above the lower support is connected to the side support via a vertically arranged adjustment component. The transparent specimen frame is rotatably mounted between the upper and lower supports. The transparent specimen frame is fixed and released at an angle via a rotation positioning component mounted on the upper support. The bottom center of the transparent specimen frame is rotatably connected to the short axis slot of the lower support via a short axis. Operating the rotation positioning component releases the angle fixation of the transparent specimen frame to allow rotation adjustment of its display surface, and then re-locks it after adjustment. The detail magnification component is used to magnify and observe a portion of the specimen within the transparent specimen frame.

[0006] The adjustable specimen display device for biology teaching proposed in this invention uses a rotating positioning component to achieve multi-angle adjustment and locking of the transparent specimen frame, facilitating the display of structural features of different parts of the specimen; a detail magnification component can accurately magnify a part of the specimen, clearly presenting fine structures; a lifting component and an adjustment component work together to flexibly adjust the display height, adapting to the viewing angle of students of different ages; the transparent specimen frame is easy to assemble and disassemble, facilitating specimen replacement; the wheel lifting device at the bottom of the base is portable, adaptable to multi-classroom transportation and outdoor teaching needs, and the overall structure is suitable for diverse scenarios in biology teaching, greatly improving the teaching assistance effect.

[0007] Optionally, the detail magnification assembly includes a rotating seat rotatably connected to the front wall of the lower support via a damping shaft, a fixed cylinder fixedly disposed on the lower side of the rotating seat, a sliding cylinder coaxially slidably disposed within the fixed cylinder, and a magnifying glass detachably mounted on the lower end of the sliding cylinder. A rotating disk is rotatably mounted on the lower wall of the rotating seat, and a first screw extending into the fixed cylinder and threadedly connected to the sliding cylinder is fixed at the center of the rotating disk. Rotating the rotating disk can drive the sliding cylinder and the magnifying glass to rise and fall axially along the fixed cylinder. The fixed cylinder and the rotating seat are fixedly connected by a connecting frame.

[0008] The damping shaft allows the rotating base to rotate and be positioned at any angle, facilitating the adjustment of the magnifying glass's observation direction and precise alignment with the parts of the specimen that need magnification. The rotating disk drives the first screw to rotate, causing the slide and magnifying glass to rise and fall axially, allowing for further flexible adjustment of the magnifying glass's position to ensure clear observation of local details. The detachable design of the magnifying glass makes it easy to replace lenses with different magnification levels to meet the observation needs of different specimens' fine structures.

[0009] Optionally, the inner wall of the fixed cylinder is provided with a longitudinally extending first guide groove, and the outer wall of the sliding cylinder is provided with a first guide block that slides in cooperation with the first guide groove.

[0010] The cooperation between the first guide groove and the first guide block provides guidance for the lifting and lowering movement of the slide, preventing the slide from rotating with the first screw, ensuring smooth axial movement of the magnifying glass, accurate alignment with the observation area, and improving the stability of magnified observation.

[0011] Optionally, the upper end of the magnifying glass is provided with a stud, and the lower end of the slide tube is provided with a screw hole that matches the stud.

[0012] The threaded connection structure of the stud and the threaded hole makes it easier to assemble and disassemble the magnifying glass. Different magnification magnifying glasses can be quickly replaced without the need for professional tools, thus improving the versatility of the device.

[0013] Optionally, the rotation positioning assembly includes an adjusting shaft rotatably mounted on the upper support, a flat plug fixedly disposed at the bottom end of the adjusting shaft for insertion into a slot at the top of the transparent specimen frame, an adjusting sleeve slidably sleeved on the upper end of the adjusting shaft, and a tension spring disposed between the top end of the adjusting shaft and the adjusting sleeve. The adjusting sleeve has a first positioning tooth on its outer periphery, and a positioning ring fixedly disposed on the upper support, which is sleeved on the outside of the adjusting sleeve and has a second positioning tooth on its inner wall. When the adjusting sleeve is lifted to overcome the tension spring force, the first positioning tooth disengages from the second positioning tooth, at which point the adjusting shaft can be rotated to drive the transparent specimen frame to rotate. When the adjusting sleeve is released, the first positioning tooth engages with the second positioning tooth under the action of the tension spring, thereby locking the angle.

[0014] Lifting the adjustment sleeve releases the angle lock. Rotating the adjustment shaft drives the transparent specimen frame to rotate via the flat plug. After adjusting to the appropriate display angle, release the adjustment sleeve. The tension spring drives the adjustment sleeve to reset, and the first positioning tooth engages and locks with the second positioning tooth. The operation is simple and convenient, and it can achieve precise positioning at multiple angles, making it easy for teachers to explain the structural features of different parts of the specimen.

[0015] Optionally, the adjusting shaft is provided with second guide grooves on both sides, and the inner wall of the adjusting sleeve is provided with a second guide block that is slidably connected to the second guide groove.

[0016] The cooperation between the second guide groove and the second guide block provides guidance for the sliding of the adjusting sleeve, ensuring that the adjusting sleeve moves only along the adjusting shaft axis and guaranteeing the reliability of the angle locking.

[0017] Optionally, the lifting assembly includes a housing vertically fixed to the base, a slide rail slidably disposed within the housing, and a limiting mechanism for locking the slide rail at different heights. The upper end of the slide rail is fixedly connected to the mounting bracket, and the side of the slide rail slides in cooperation with a longitudinal groove formed on the side wall of the housing via a slider.

[0018] The slide moves up and down along the shell, causing the mounting frame and specimen to rise and fall synchronously. The cooperation between the slider and the longitudinal slide groove ensures that the lifting process is smooth and without deviation. The limiting mechanism can lock the slide at different heights to adapt to different viewing angles and improve the learning experience for all students.

[0019] Optionally, the limiting mechanism includes a limiting plate disposed on the side wall of the slider, a pair of limiting pins fixed on the limiting plate, and a plurality of limiting holes spaced apart on the housing along the length of the slide groove. The limiting plate is connected to the slider through a spring telescopic rod, so that the limiting pins tend to insert into the limiting holes under the action of the spring telescopic rod to lock the height. Pulling the limiting plate can cause the limiting pins to retract from the limiting holes for height adjustment.

[0020] The spring telescopic rod provides continuous locking force to the limit pin, ensuring that the limit pin is stably inserted into the limit hole and preventing the carriage from sliding accidentally. Pulling the limit plate allows the limit pin to be disengaged for height adjustment. The operation is simple and allows teachers to quickly adjust the display height to meet the needs of teaching scenarios.

[0021] Optionally, the adjustment assembly includes an adjustment groove vertically formed in the side support, a second screw rotatably disposed in the adjustment groove, and an adjustment block threadedly connected to the second screw and slidably engaged with the adjustment groove. One end of the upper support is fixedly connected to the adjustment block. Rotating the second screw can drive the upper support and the transparent specimen frame to rise and fall vertically as a whole.

[0022] Rotating the second screw drives the adjusting block to slide along the adjusting groove, which in turn raises and lowers the upper support. This, combined with the lower support, allows for the installation of specimen frames of different sizes, improving the adaptability for teaching.

[0023] Optionally, the base is provided with wheels at its bottom.

[0024] The wheels allow the device to move flexibly, reducing the difficulty of carrying it and improving its portability and practicality.

[0025] (III) Beneficial Effects The beneficial effects of this invention are: The display angle of the transparent specimen frame can be flexibly adjusted by rotating the positioning component, and multiple angles can be locked, which makes it easier for teachers to explain the structural features of different parts of the specimen, allowing all students to observe clearly and improving the teaching effect. The detail magnification component allows for precise magnification of the specimen's fine structure by rotating and raising the magnifying glass to adjust its position and height. It also allows for the replacement of magnifying glasses with different magnification levels to meet the observation needs of different specimens such as plants, animals, and microorganisms, thus solving the problem of fine structures being difficult to see with the naked eye. The lifting and adjusting components work together to achieve multi-dimensional adjustment of the display height, adapting to different viewing angles and enhancing the learning experience; The transparent specimen frame is installed by using the straight plug and straight slot of the rotating positioning component. The specimen frame can be assembled and disassembled by adjusting the component to drive the upper support to rise and fall. There is no need to disassemble multiple parts, which makes it easy to quickly change specimens for different teaching themes and improve the teaching pace. The wheels at the bottom of the base make the device flexible and reduce the difficulty of handling, adapting to the diverse needs of biology teaching scenarios. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0027] Figure 2 This is a side sectional view of the present invention.

[0028] Figure 3 This is a detailed structural diagram of the component of the present invention.

[0029] Figure 4 This is a top cross-sectional view of the lifting assembly of the present invention.

[0030] Figure 5 This is a partially enlarged structural schematic diagram of the present invention.

[0031] Figure 6 This is a schematic diagram of the meshing structure of the first positioning tooth and the second positioning tooth of the present invention.

[0032] In the diagram: 1. Base; 2. Mounting frame; 3. Transparent specimen frame; 4. Upper support; 5. Damping shaft; 6. Rotating seat; 7. Fixed cylinder; 8. Slide cylinder; 9. Magnifying glass; 10. Rotating disk; 11. First screw; 12. Stud; 13. Adjusting shaft; 14. Flathead plug; 15. Flathead slot; 16. Adjusting sleeve; 17. Tension spring; 18. First positioning tooth; 19. Positioning ring; 20. Second positioning tooth; 21. Housing; 22. Slide; 23. Slider; 24. Slide groove; 25. Limiting plate; 26. Limiting pin; 27. Limiting hole; 28. Spring telescopic rod; 29. ​​Adjusting groove; 30. Second screw; 31. Adjusting block; 32. Traveling wheel. Detailed Implementation

[0033] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The adjustable specimen display device for biology teaching proposed in this invention can adjust the display height according to the age of the students when used in biology classroom teaching. Different parts of the specimen can be displayed by rotating the specimen frame, and fine features can be clearly presented by using the detail magnification component. The device is easy to operate and highly adaptable, and can effectively improve the intuitiveness and interactivity of biology teaching.

[0035] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0036] Please see Figure 1-6 The present invention provides a technical solution: an adjustable specimen display device for biological teaching, comprising a base 1, a lifting component, a mounting frame 2, a transparent specimen frame 3, a detail magnification component, a rotation positioning component, and an adjustment component.

[0037] The base 1 has a horizontal rectangular plate structure and is made of lightweight aluminum alloy. The four corners of the bottom are equipped with walking wheels 32, which have a braking function so that the device can be moved to a designated position and locked stably. The housing 21 of the lifting component is vertically fixed at the center of the upper surface of the base 1.

[0038] The lifting assembly includes a housing 21, a slide 22, and a limiting mechanism. The housing 21 is a vertical hollow cuboid structure with a longitudinal groove 24 on its side wall. The slide 22 is slidably assembled inside the housing 21, and a slider 23 is fixed on its side to slide in cooperation with the groove 24. The limiting mechanism is located on the side wall of the slider 23 and includes a limiting plate 25, a pair of limiting pins 26, multiple sets of limiting holes 27, and a spring telescopic rod 28. The limiting plate 25 is connected to the slider 23 through the spring telescopic rod 28. The limiting pins 26 are fixed on the side of the limiting plate 25 facing the slider 23 and are adapted to the limiting holes 27 that are spaced apart along the length of the groove 24 on the housing 21. The spring telescopic rod 28 provides elastic force to the limiting pins 26 toward the limiting holes 27. Pulling the limiting plate 25 can cause the limiting pins 26 to exit the limiting holes 27, releasing the slide 22 for height adjustment.

[0039] Mounting bracket 2 is integrally formed from mutually perpendicular lower support and side support. The lower support is horizontal plate-shaped, and the side support is vertical plate-shaped. The bottom of mounting bracket 2 is fixedly connected to the upper end of slide 22 and rises and falls synchronously with slide 22. A vertical adjustment groove 29 is opened in the side support. The adjustment component is set in the adjustment groove 29, including a second screw 30, an adjustment block 31 and a rotating handle. The second screw 30 is rotatably installed in the adjustment groove 29 through a bearing. The top end extends to the top of the side support and is connected to the rotating handle. The adjustment block 31 is threadedly connected to the second screw 30 and slides in cooperation with the adjustment groove 29. One side of the adjustment block 31 is fixedly connected to the upper support 4. The upper support 4 is horizontal plate-shaped and located directly above the lower support.

[0040] The transparent specimen frame 3 is a rectangular transparent cavity structure used to hold biological specimens. Its bottom center is rotatably connected to the short shaft slot of the lower support via a short shaft, and a slot 15 is provided at the top center. A rotation positioning assembly is mounted on the upper support 4, including an adjusting shaft 13, a flat plug 14, an adjusting sleeve 16, a tension spring 17, and a positioning ring 19. The adjusting shaft 13 is rotatably mounted at the center of the upper support 4 via a bearing, and its bottom end is fixed with a flat plug 14 that matches the slot 15 at the top of the transparent specimen frame 3. Inserting the plug into the slot rotates the specimen frame. The adjusting sleeve 16... The adjusting sleeve 16 is slidably mounted on the upper end of the adjusting shaft 13. The adjusting shaft 13 has second guide grooves on both sides. The inner wall of the adjusting sleeve 16 has a second guide block that slides with the second guide groove. The outer periphery of the adjusting sleeve 16 has a first positioning tooth 18. The upper support 4 has a positioning ring 19 that is fitted on the outer side of the adjusting sleeve 16. The inner wall of the positioning ring 19 has a second positioning tooth 20 that matches the first positioning tooth 18. The tension spring 17 is located between the top end of the adjusting shaft 13 and the adjusting sleeve 16 to provide downward elastic force to the adjusting sleeve 16, so that the first positioning tooth 18 and the second positioning tooth 20 are constantly engaged and locked.

[0041] The detail magnification assembly is located on the front wall of the lower support and includes a rotating base 6, a fixed cylinder 7, a sliding cylinder 8, a magnifying glass 9, a rotating disk 10, a first screw 11, and a connecting frame. The rotating base 6 is rotatably connected to the front wall of the lower support via a damping shaft 5, allowing it to rotate and be positioned at any angle. The fixed cylinder 7 is fixed to the lower side of the rotating base 6 via the connecting frame. The fixed cylinder 7 is a vertical hollow cylindrical structure with a longitudinally extending first guide groove on its inner wall. The sliding cylinder 8 is coaxially slidably assembled inside the fixed cylinder 7, and its outer wall has a first guide block that slides with the first guide groove. The magnifying glass 9 is detachably mounted at its lower end via a stud 12 and a screw hole. The rotating disk 10 is rotatably mounted on the lower wall of the rotating base 6 via a bearing. A first screw 11, which extends into the fixed cylinder 7 and is threadedly connected to the upper end of the sliding cylinder 8, is fixed at its center. Rotating the rotating disk 10 drives the sliding cylinder 8 and the magnifying glass 9 to rise and fall axially along the fixed cylinder 7.

[0042] The working process of this adjustable specimen display device used for biology teaching is as follows: The device is moved to the designated position in the classroom via the walking wheels 32. The brake pedal of the walking wheels 32 is pressed to lock the wheels and ensure the stability of the device.

[0043] Rotate the handle of the adjustment component to drive the upper support 4 to rise, increasing the distance between the upper support 4 and the lower support. Place the transparent specimen frame 3 containing the biological specimen on the lower support, so that the bottom short shaft is rotatably connected to the short shaft slot of the lower support. Rotate the handle in the opposite direction to drive the upper support 4 to fall, so that the flat plug 14 of the rotation positioning component is inserted into the flat slot 15 at the top of the transparent specimen frame 3, completing the specimen frame installation. Based on the students' viewing angle and classroom layout, pull the limiting plate 25 to disengage the limiting pin 26 from the limiting hole 27, slide the slide 22 up and down to adjust the height of the mounting bracket 2, and release the limiting plate 25 when it reaches the appropriate position. Under the action of the spring telescopic rod 28, the limiting pin 26 inserts into the corresponding limiting hole 27 to lock the height of the slide 22.

[0044] When the specimen needs to be rotated, lift the adjusting sleeve 16 of the rotation positioning component to overcome the elasticity of the tension spring 17 and disengage the first positioning tooth 18 from the second positioning tooth 20. Rotate the adjusting sleeve 16 to drive the adjusting shaft 13 and the transparent specimen frame 3 to rotate. After reaching the appropriate display angle, release the adjusting sleeve 16. The tension spring 17 drives the adjusting sleeve 16 to reset. The first positioning tooth 18 and the second positioning tooth 20 engage and lock to fix the display angle.

[0045] When explaining the fine structure of a specimen, rotate the rotating base 6 of the detail magnification assembly, adjust the observation direction of the magnifying glass 9 through the damping shaft 5, and align it with the direction of the part to be magnified; rotate the rotating disk 10 to drive the first screw 11 to rotate, which will drive the slide 8 and the magnifying glass 9 to rise and fall along the fixed cylinder 7 until the magnifying glass 9 moves to the desired magnification position of the specimen, making it easier for students to observe. If it is necessary to change the magnification, unscrew the magnifying glass 9 and replace it with a magnifying glass 9 with the corresponding stud 12. The side wall of the housing 21 can be provided with a box for accommodating and placing the magnifying glass 9.

[0046] When changing specimens, rotate the rotating handle of the adjustment component to drive the upper support 4 to rise, remove the old specimen frame, put in the new specimen frame and fix it again. After the teaching is over, adjust the slide 22 to the lowest height, lock the walking wheel 32 to brake, and push the device to the storage position to reduce space occupation.

[0047] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An adjustable specimen display device for biology teaching, characterized in that, The device includes a horizontally positioned base (1), a mounting frame (2) mounted above the base (1) via a lifting assembly, a transparent specimen frame (3) mounted on the mounting frame (2), and a detail magnification assembly positioned on the front side of the mounting frame (2). The mounting frame (2) is integrally formed from mutually perpendicular lower supports and side supports. An upper support (4) located above the lower support is connected to the side support via a vertically positioned adjustment assembly. The transparent specimen frame (3) is rotatably positioned between the upper support (4) and the lower support. The transparent specimen frame (3) is fixed and released at an angle via a rotation positioning assembly mounted on the upper support (4). The bottom center of the transparent specimen frame (3) is rotatably connected to the lower support. By operating the rotation positioning assembly, the angle fixation of the transparent specimen frame (3) can be released so that its display surface can be rotated and adjusted, and then re-locked after adjustment. The detail magnification assembly is used to magnify and observe a portion of the specimen within the transparent specimen frame (3).

2. The adjustable specimen display device for biology teaching according to claim 1, characterized in that, The detailed magnification assembly includes a rotating seat (6) rotatably connected to the front wall of the lower support via a damping shaft (5), a fixed cylinder (7) fixedly disposed on the lower side of the rotating seat (6), a sliding cylinder (8) slidably disposed coaxially within the fixed cylinder (7), and a magnifying glass (9) detachably mounted on the lower end of the sliding cylinder (8). A rotating disk (10) is rotatably mounted on the lower wall of the rotating seat (6). A first screw (11) is fixed at the center of the rotating disk (10), extending into the fixed cylinder (7) and threadedly connected to the sliding cylinder (8). Rotating the rotating disk (10) can drive the sliding cylinder (8) and the magnifying glass (9) to rise and fall along the axial direction of the fixed cylinder (7). The fixed cylinder (7) and the rotating seat (6) are fixedly connected by a connecting frame.

3. The adjustable specimen display device for biology teaching according to claim 2, characterized in that, The inner wall of the fixed cylinder (7) is provided with a longitudinally extending first guide groove, and the outer wall of the sliding cylinder (8) is provided with a first guide block that slides in cooperation with the first guide groove.

4. The adjustable specimen display device for biology teaching according to claim 1, characterized in that, The upper end of the magnifying glass (9) is provided with a stud (12), and the lower end of the slide cylinder (8) is provided with a screw hole that matches the stud (12).

5. An adjustable specimen display device for biology teaching according to claim 4, characterized in that, The rotary positioning assembly includes an adjusting shaft (13) rotatably mounted on the upper support (4), a flat plug (14) fixedly disposed at the bottom end of the adjusting shaft (13) for insertion into the top slot (15) of the transparent specimen frame (3), an adjusting sleeve (16) slidably sleeved on the upper end of the adjusting shaft (13), and a tension spring (17) disposed between the top end of the adjusting shaft (13) and the adjusting sleeve (16). The outer periphery of the adjusting sleeve (16) is provided with a first positioning tooth (18). The upper support... (4) A positioning ring (19) is fixedly provided on the outside of the adjusting sleeve (16) and the inner wall is provided with a second positioning tooth (20). When the adjusting sleeve (16) is lifted to overcome the elastic force of the tension spring (17), the first positioning tooth (18) and the second positioning tooth (20) disengage. At this time, the adjusting shaft (13) can be rotated to drive the transparent specimen frame (3) to rotate. When the adjusting sleeve (16) is released, the first positioning tooth (18) and the second positioning tooth (20) mesh under the action of the tension spring (17) to lock the angle.

6. An adjustable specimen display device for biology teaching according to claim 1, characterized in that, The adjusting shaft (13) has second guide grooves on both sides, and the inner wall of the adjusting sleeve (16) has a second guide block that is slidably connected to the second guide groove.

7. An adjustable specimen display device for biology teaching according to claim 6, characterized in that, The lifting assembly includes a housing (21) vertically fixed on the base (1), a slide (22) slidably disposed in the housing (21), and a limiting mechanism for locking the slide (22) at different heights. The upper end of the slide (22) is fixedly connected to the mounting bracket (2), and the side of the slide (22) slides in cooperation with the longitudinal slide groove (24) opened on the side wall of the housing (21) through a slider (23).

8. An adjustable specimen display device for biology teaching according to claim 1, characterized in that, The limiting mechanism includes a limiting plate (25) disposed on the side wall of the slider (23), a pair of limiting pins (26) fixed on the limiting plate (25), and a plurality of limiting holes (27) spaced apart on the housing (21) along the length direction of the slide groove (24). The limiting plate (25) is connected to the slider (23) through a spring telescopic rod (28), so that the limiting pins (26) tend to insert into the limiting holes (27) under the action of the spring telescopic rod (28) to lock the height. Pulling the limiting plate (25) can make the limiting pins (26) exit the limiting holes (27) for height adjustment.

9. The adjustable specimen display device for biology teaching according to claim 2, characterized in that, The adjustment assembly includes an adjustment groove (29) vertically opened in the side bracket, a second screw (30) rotatably disposed in the adjustment groove (29), and an adjustment block (31) threadedly connected to the second screw (30) and slidably engaged with the adjustment groove (29). One end of the upper support (4) is fixedly connected to the adjustment block (31). Rotating the second screw (30) can drive the upper support (4) and the transparent specimen frame (3) to rise and fall vertically as a whole.

10. An adjustable specimen display device for biology teaching according to claim 1, characterized in that, The base (1) is equipped with wheels (32) at its bottom.

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