Independent lifting dustless blackboard
Patent Information
- Application Number
- CN202522266737.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0013]In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, a first support frame and a second support frame are further included. The first support frame is disposed at the end of the first guide wheel facing away from the first drive component, is fixedly connected to the side frame, and rotates in cooperation with the power output shaft of the first drive component. The second support frame is disposed at the end of the second guide wheel facing away from the second drive component, is fixedly connected to the side frame, and rotates in cooperation with the power output shaft of the second drive component.
Smart Images
Figure CN224747674U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of educational equipment technology, specifically relating to an independent liftable dust-free blackboard. Background Technology
[0002] The applicant has developed a lifting dust-free blackboard, which mainly consists of a blackboard eraser cleaning mechanism, a frame, and two blackboards. The blackboard eraser cleaning mechanism is connected to the frame and is used to clean the blackboard eraser, keeping it moist and reducing dust when erasing the blackboard, thus achieving a dust-free effect. The two blackboards slide up and down inside the frame, and a counterweight is slidably installed inside the rear frame of the blackboards. A sprocket is fixed at the top of the frame, and a chain is mounted on the sprocket. The blackboards are connected to the counterweight via the chain, and the counterweight is used to balance the weight of the blackboards, allowing each blackboard to rise and fall independently.
[0003] However, the above design requires the border to accommodate two chains arranged side by side along the width of the blackboard, resulting in a wider exposed border on the front of the blackboard and a lower effective area ratio of the blackboard. Utility Model Content
[0004] This utility model provides an independent lifting dust-free blackboard, which aims to solve the technical problems described in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an independently adjustable dust-free blackboard, comprising: The frame includes two side frames, which are spaced apart, and at least one side frame has a first accommodating space and a second accommodating space extending vertically side by side along the thickness direction. Two blackboards are offset between the two side frames along the thickness direction of the border, and slide in cooperation with the two side frames along the height direction respectively; The first balancing component includes a first counterweight component and a first connecting component. The first counterweight component is disposed on the rear side of the blackboard. One end of the first connecting component is connected to the first counterweight component, and the other end extends into the first accommodating space and is connected to the blackboard. The second balancing component includes a second counterweight component and a second connecting component. The second counterweight component is disposed on the rear side of the blackboard. One end of the second connecting component is connected to the second counterweight component, and the other end extends into the second receiving space and is connected to the other blackboard. The movement trajectory of the second connecting component is spaced apart from the movement trajectory of the first connecting component. A cleaning component, connected to the frame, is used to clean the eraser and keep it moist.
[0006] In one possible implementation of the independently adjustable dust-free blackboard provided by this utility model, the first connecting component includes: The first guide wheel is located at the top of the side frame and is rotatably connected to the side frame. The first connector is mounted on the first guide wheel, with one end connected to a blackboard and the other end connected to the first counterweight assembly; The second connection component includes: The second guide wheel is located at the top of the side frame and is rotatably connected to the side frame. The second connector is mounted on the second guide wheel, with one end connected to the other blackboard and the other end connected to the second counterweight assembly; the second connector and the first connector are set at an angle to each other on the movement trajectory of the top of the side frame.
[0007] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, the axis of the first guide wheel is parallel to the width of the blackboard, and the axis of the second guide wheel is set at an angle to the axis of the first guide wheel.
[0008] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, the first connecting component includes two first guide wheels, which are respectively disposed on the upper side of the first accommodating space and the first counterweight component; the second connecting component includes two second guide wheels, which are respectively disposed on the upper side of the second accommodating space and the second counterweight component.
[0009] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, the two side frames are provided with the first accommodating space and the second accommodating space, and each side frame is provided with the first balancing component and the second balancing component.
[0010] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, the first guide wheel and the second guide wheel are sprockets, and the first connector and the second connector are chains.
[0011] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, the side frame is further provided with a first counterweight groove and a second counterweight groove, the first counterweight component is disposed in the first counterweight groove, and the second counterweight component is disposed in the second counterweight groove.
[0012] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, a first driving component and a second driving component are further included. The power output end of the first driving component is connected to any of the first guide wheels to drive the first guide wheels to rotate. The power output end of the second driving component is connected to any of the second guide wheels to drive the second guide wheels to rotate.
[0013] In one possible implementation of the independent lifting dust-free blackboard provided by this utility model, a first support frame and a second support frame are further included. The first support frame is disposed at the end of the first guide wheel facing away from the first drive component, is fixedly connected to the side frame, and rotates in cooperation with the power output shaft of the first drive component. The second support frame is disposed at the end of the second guide wheel facing away from the second drive component, is fixedly connected to the side frame, and rotates in cooperation with the power output shaft of the second drive component.
[0014] The beneficial effects of the independently liftable dust-free blackboard provided by this utility model are as follows: Compared with the prior art, the independently liftable dust-free blackboard provided by this utility model adjusts the "space for accommodating connecting components" from "arranged side by side along the width direction of the blackboard" in the prior art to "arranged side by side along the thickness direction of the side frame". Here, "side frame thickness direction" refers to the front-to-back dimension direction of the side frame itself. The first and second accommodating spaces are arranged in layers in this direction, rather than being side by side in the left-to-right width direction of the side frame; this eliminates the need to increase the width of the side frame in the width direction to accommodate two connecting components, directly reducing the width of the exposed border at the front of the blackboard. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of the independently lifting dust-free blackboard provided in the embodiment of this utility model; Figure 2 for Figure 1 Enlarged view of part A in the image; Figure 3 A cross-sectional view of the side frame of the independent lifting dust-free blackboard provided in this embodiment of the utility model; Explanation of reference numerals in the attached figures: 10. Side frame; 11. First receiving space; 12. Second receiving space; 13. First counterweight slot; 14. Second counterweight slot; 21. First counterweight assembly; 22. Second counterweight assembly; 31. First guide wheel; 32. First connector; 41. Second guide wheel; 42. Second connector; 51. First drive component; 52. Second drive component; 60. Blackboard; 70. Cleaning component; 81. First support frame; 82. Second support frame. Detailed Implementation
[0016] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0020] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0021] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.
[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0023] Please refer to the following: Figures 1 to 3 The present invention provides an independent lifting dust-free blackboard. The independent lifting dust-free blackboard includes a frame, two blackboards 60, a first balancing component, a second balancing component, and a cleaning component 70. The frame includes two side frames 10, spaced apart. At least one side frame 10 has a first receiving space 11 and a second receiving space 12 extending vertically side-by-side along its thickness direction. The two blackboards 60 are staggered between the two side frames 10 along the thickness direction of the frame and slide in cooperation with the two side frames 10 along their respective height directions. The first balancing component includes a first counterweight component 21 and a first connecting component. The first counterweight component 21 is disposed on the blackboard. At the rear of the blackboard 60, one end of the first connecting component is connected to the first counterweight component 21, and the other end extends into the first receiving space 11 and is connected to a blackboard 60; the second balancing component includes a second counterweight component 22 and a second connecting component. The second counterweight component 22 is located at the rear of the blackboard 60, and one end of the second connecting component is connected to the second counterweight component 22, while the other end extends into the second receiving space 12 and is connected to another blackboard 60; the movement trajectory of the second connecting component is spaced apart from the movement trajectory of the first connecting component; the cleaning component 70 is connected to the frame and is used to clean the eraser and keep it moist.
[0024] It should be noted that the cleaning component 70 is an existing device, fixed to the side of the blackboard 60 frame. It can clean the eraser, keeping it moist, and thus adsorbing powder when erasing the blackboard 60, reducing dust and achieving a "dust-free" effect. It should be further clarified that "dust-free" here refers to a significant reduction in dust compared to using a dry eraser, not absolute dust-free. The thickness direction of the side frame 10 is the front-to-back extension direction of the blackboard 60.
[0025] The two blackboards 60 are "misaligned along the thickness direction" means that one blackboard 60 is closer to the front or rear side of the side frame 10 than the other blackboard 60, so that the sliding trajectories of the two blackboards 60 are misaligned to avoid mutual interference. At the same time, they correspond to the first receiving space 11 and the second receiving space 12 at different positions in the thickness direction, ensuring that the first connecting component and the second connecting component can be extended into the corresponding receiving space and connected to the blackboard 60.
[0026] The beneficial effects of the independent lifting dust-free blackboard provided in this embodiment of the present invention are as follows: Compared with the prior art, the independent lifting dust-free blackboard provided in this embodiment of the present invention adjusts the "space for accommodating connecting components" from "arranged side by side along the width direction of the blackboard 60" in the prior art to "arranged side by side along the thickness direction of the side frame 10". Here, "thickness direction of the side frame 10" refers to the front-to-back dimension direction of the side frame 10 itself. The first accommodating space 11 and the second accommodating space 12 are arranged in layers in this direction, rather than side by side in the left-to-right width direction of the side frame 10. This means that the width dimension of the side frame 10 does not need to be increased to accommodate two connecting components, directly reducing the width of the exposed border on the front side of the blackboard 60. The cleaning component 70 is retained, balancing the dual requirements of "dust-free" and "large effective area", significantly increasing the effective area ratio of the blackboard 60.
[0027] like Figure 1 and Figure 2 As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, the first connecting component includes a first guide wheel 31 and a first connector 32. The first guide wheel 31 is located on the top of the side frame 10 and is rotatably connected to the side frame 10. The first connector 32 is mounted on the first guide wheel 31, with one end connected to a blackboard 60 and the other end connected to the first counterweight component 21.
[0028] The second connecting component includes a second guide wheel 41 and a second connector 42. The second guide wheel 41 is located on the top of the side frame 10 and is rotatably connected to the side frame 10. The second connector 42 is mounted on the second guide wheel 41, with one end connected to another blackboard 60 and the other end connected to the second counterweight component 22. The second connector 42 and the first connector 32 are set at an angle to each other on the movement trajectory of the top of the side frame 10.
[0029] It should be noted that by optimizing the transmission space layout by limiting the "angle of the connecting parts' movement trajectory," the core improvement lies in abandoning the design of "connecting parts being arranged side by side along the width direction" in the background technology, and instead avoiding interference through trajectory spatial misalignment. Specifically, "the movement trajectories of the second connecting part 42 and the first connecting part 32 at the top of the side frame 10 are set at an angle." Here, "movement trajectory" refers to the path formed by the connecting parts when they are transmitted at the top of the side frame 10, and the angle can be 20° to 60°.
[0030] Specifically, the first connector 32 moves along a forward-backward trajectory along the thickness direction of the side frame 10, while the second connector 42 moves along an inclined trajectory. The transmission paths of the two connectors at the top of the side frame 10 do not overlap and do not occupy space in the width direction. Simultaneously, the first and second guide wheels 41 are both located at the top of the side frame 10, guiding the movement direction of the connectors. The layout of "two blackboards 60 misaligned along the thickness direction" can be adapted solely by the angle between the connector trajectories—the front blackboard 60 corresponds to the second connector 42 along the inclined trajectory, and the rear blackboard 60 corresponds to the first connector 32 along the forward-backward trajectory. This ensures that the connectors can respectively extend into the first and second accommodating spaces 12 in the thickness direction, avoiding the problem of "side-by-side arrangement in the width direction leading to a wide frame" in the prior art.
[0031] The misaligned trajectory design ensures no transmission interference in the connecting parts, and the rotation connection with the guide wheel improves the smoothness of the blackboard 60's lifting and lowering.
[0032] like Figure 1 and Figure 2 As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, the axis of the first guide wheel 31 is parallel to the width of the blackboard 60, and the axis of the second guide wheel 41 is set at an angle to the axis of the first guide wheel 31.
[0033] It should be noted that by defining the direction of the guide wheel axis, the spatial layout of the transmission path is further optimized. The "width direction of the blackboard 60" refers to the left-right extension direction of the side frame 10, and the axis of the first guide wheel 31 is parallel to this direction; the axis of the second guide wheel 41 forms an angle (20°~60°) with the first guide wheel 31. This design causes the movement planes of the first connector 32 and the second connector 42 to be offset along the thickness direction, rather than being parallel in the same vertical plane.
[0034] The included angle of the guide wheel axis causes the moving plane of the connecting components to be misaligned, completely avoiding the risk of space occupation and interference in the width direction; the spatial layout is more compact, the width of the side frame 10 can be further reduced, and the effective area ratio of the blackboard 60 is significantly improved.
[0035] like Figure 1 and Figure 2As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, the first connecting component includes two first guide wheels 31, which are respectively disposed on the upper side of the first accommodating space 11 and the first counterweight component 21; the second connecting component includes two second guide wheels 41, which are respectively disposed on the upper side of the second accommodating space 12 and the second counterweight component 22.
[0036] It should be noted that this embodiment optimizes the "single guide wheel" into a "double guide wheel", with the two guide wheels corresponding to the "upper side of the receiving space" and the "upper side of the counterweight assembly" respectively. Specifically, the guide wheel on the upper side of the first receiving space 11 supports the first connecting member 32 extending from the blackboard 60 to the side frame 10, and the guide wheel on the upper side of the first counterweight assembly 21 supports the first connecting member 32 extending from the first receiving space 11 to the counterweight assembly, forming a "two-point positioning" transmission path; the layout of the second guide wheel 41 is similar. This design addresses the layout characteristic of the "counterweight assembly located at the rear of the blackboard 60" by using double guide wheels to limit the transmission path of the connecting member to "blackboard 60 → receiving space guide wheel → counterweight assembly guide wheel → counterweight assembly", avoiding problems such as sagging, offset, or friction against the inner wall of the side frame 10 due to the connecting member crossing the front and rear spaces (from the front of the blackboard 60 to the rear of the counterweight).
[0037] like Figure 1 and Figure 2 As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, a first accommodating space 11 and a second accommodating space 12 are provided in both side frames 10, and a first balancing component and a second balancing component are provided on each side frame 10.
[0038] It should be noted that by setting independent first receiving space 11, second receiving space 12, first balancing component, and second balancing component on the left and right sides of the blackboard 60, both sides of the blackboard 60 are supported and transmitted by the balancing component. The first balancing component and the second balancing component make the blackboard 60 evenly stressed, avoiding tilting and deformation caused by unilateral stress, and improving structural stability and service life. Moreover, the symmetrical layout makes the installation of the blackboard 60 more convenient, and the left and right synchronization is stronger when raising and lowering, avoiding jamming or deviation.
[0039] Specifically, the weight of the two first counterweight components 21 or the second counterweight component 22 is matched with the weight of the blackboard 60. The first counterweight component 21 and the second counterweight component 22 are blocks with a certain weight, such as metal blocks, cement blocks, etc.
[0040] like Figure 1 and Figure 2As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, the first guide wheel 31 and the second guide wheel 41 are sprockets, and the first connector 32 and the second connector 42 are chains.
[0041] It should be noted that the "sprocket-chain" drive system has advantages over belt drives (prone to slippage) and rope drives (weak load-bearing capacity). Chain drives offer the advantages of "slippage-free meshing and high load-bearing capacity," making them particularly suitable for the weight requirements of the blackboard 60 and its counterweight components (the blackboard 60 is mostly made of metal or wood and has a certain weight). Furthermore, the compact structure of the sprocket and chain allows for precise installation space matching the layered accommodating space in the thickness direction within the side frame 10—the chain can stably transmit power within a narrow accommodating space without requiring additional space widening; the axial direction of the sprocket can be flexibly adjusted, further optimizing space utilization in the thickness direction. In addition, the high transmission precision of the chain drive ensures accurate position control during the raising and lowering of the blackboard 60.
[0042] like Figure 1 and Figure 3 As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, the side frame 10 is also provided with a first counterweight groove 13 and a second counterweight groove 14, the first counterweight component 21 is disposed in the first counterweight groove 13, and the second counterweight component 22 is disposed in the second counterweight groove 14.
[0043] It should be noted that a "counterweight groove" is added to the side frame 10, and the first counterweight groove 13 and the second counterweight groove 14 correspond to the first counterweight component 21 and the second counterweight component 22, respectively. The first counterweight groove 13 and the second counterweight groove 14 are both vertically extending groove structures, and their inner walls are adapted to the outer walls of the counterweight components. This can limit the movement direction of the counterweight components—allowing the counterweight components to slide only vertically, preventing them from swaying left and right or back and forth during the lifting and lowering process, ensuring the synchronous lifting and lowering of the counterweight and the blackboard 60, and improving the stability of the lifting and lowering.
[0044] like Figure 1 and Figure 2 As shown, in a specific embodiment of the independent lifting dust-free blackboard provided in this utility model, it further includes a first driving component 51 and a second driving component 52. The power output end of the first driving component 51 is connected to any first guide wheel 31 to drive the first guide wheel 31 to rotate. The power output end of the second driving component 52 is connected to any second guide wheel 41 to drive the second guide wheel 41 to rotate.
[0045] It should be noted that the first drive component 51 (such as a motor + reduction mechanism) drives the first guide wheel 31 to rotate, and drives the first blackboard 60 to rise and fall through chain transmission (or other connecting parts transmission); the second drive component 52 similarly drives the second blackboard 60 to rise and fall. The two are completely independent, which can effectively solve the potential problem of "manual lifting is laborious", making it more labor-saving and convenient, and adapting to the usage needs of large-size and heavy blackboards 60.
[0046] like Figure 1 and Figure 2 As shown in the embodiment of the independent lifting dust-free blackboard provided in this utility model, it further includes a first support frame 81 and a second support frame 82. The first support frame 81 is located at the end of the first guide wheel 31 facing away from the first drive assembly 51, is fixedly connected to the side frame 10, and rotates with the power output shaft of the first drive assembly 51. The second support frame 82 is located at the end of the second guide wheel 41 facing away from the second drive assembly 52, is fixedly connected to the side frame 10, and rotates with the power output shaft of the second drive assembly 52. It is used to support the power output shafts of the first drive assembly 51 and the second drive assembly 52, avoid bending of the power output shaft, reduce radial vibration, and make the transmission more stable.
[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An independently adjustable dust-free blackboard, characterized in that, include: The frame includes two side frames (10), which are spaced apart. At least one of the side frames (10) has a first accommodating space (11) and a second accommodating space (12) extending vertically side by side along the thickness direction. Two blackboards (60) are offset between the two side frames (10) along the thickness direction of the border, and slide in cooperation with the two side frames (10) along the height direction respectively; The first balancing component includes a first counterweight component (21) and a first connecting component. The first counterweight component (21) is located on the rear side of the blackboard (60). One end of the first connecting component is connected to the first counterweight component (21), and the other end extends into the first accommodating space (11) and is connected to the blackboard (60). The second balancing component includes a second counterweight component (22) and a second connecting component. The second counterweight component (22) is located on the rear side of the blackboard (60). One end of the second connecting component is connected to the second counterweight component (22), and the other end extends into the second receiving space (12) and is connected to the other blackboard (60). The movement trajectory of the second connecting component is spaced apart from the movement trajectory of the first connecting component. A cleaning component (70), connected to the frame, is used to clean the eraser and keep it moist.
2. The independently adjustable dust-free blackboard as described in claim 1, characterized in that, The first connection component includes: The first guide wheel (31) is located on the top of the side frame (10) and is rotatably connected to the side frame (10); The first connector (32) is mounted on the first guide wheel (31), with one end connected to a blackboard (60) and the other end connected to the first counterweight assembly (21); The second connection component includes: The second guide wheel (41) is located on the top of the side frame (10) and is rotatably connected to the side frame (10); The second connector (42) is mounted on the second guide wheel (41), with one end connected to the other blackboard (60) and the other end connected to the second counterweight assembly (22); the second connector (42) and the first connector (32) are set at an angle to each other on the movement trajectory of the top of the side frame (10).
3. The independently adjustable dust-free blackboard as described in claim 2, characterized in that, The axis of the first guide wheel (31) is parallel to the width of the blackboard (60), and the axis of the second guide wheel (41) is set at an angle to the axis of the first guide wheel (31).
4. The independently adjustable dust-free blackboard as described in claim 3, characterized in that, The first connecting component includes two first guide wheels (31), which are respectively disposed on the upper side of the first accommodating space (11) and the first counterweight component (21); the second connecting component includes two second guide wheels (41), which are respectively disposed on the upper side of the second accommodating space (12) and the second counterweight component (22).
5. The independently adjustable dust-free blackboard as described in any one of claims 2-4, characterized in that, The two side frames (10) are provided with the first accommodating space (11) and the second accommodating space (12), and each side frame (10) is provided with the first balancing component and the second balancing component.
6. The independently adjustable dust-free blackboard as described in claim 5, characterized in that, The first guide wheel (31) and the second guide wheel (41) are sprockets, and the first connector (32) and the second connector (42) are chains.
7. The independently adjustable dust-free blackboard as described in claim 5, characterized in that, The side frame (10) is also provided with a first counterweight groove (13) and a second counterweight groove (14), the first counterweight component (21) is located in the first counterweight groove (13), and the second counterweight component (22) is located in the second counterweight groove (14).
8. The independently adjustable dust-free blackboard as described in claim 5, characterized in that, It also includes a first drive assembly (51) and a second drive assembly (52). The power output end of the first drive assembly (51) is connected to any of the first guide wheels (31) to drive the first guide wheel (31) to rotate. The power output end of the second drive assembly (52) is connected to any of the second guide wheels (41) to drive the second guide wheel (41) to rotate.
9. The independently adjustable dust-free blackboard as described in claim 8, characterized in that, It also includes a first support frame (81) and a second support frame (82). The first support frame (81) is located at the end of the first guide wheel (31) facing away from the first drive assembly (51), is fixedly connected to the side frame (10), and rotates with the power output shaft of the first drive assembly (51). The second support frame (82) is located at the end of the second guide wheel (41) facing away from the second drive assembly (52), is fixedly connected to the side frame (10), and rotates with the power output shaft of the second drive assembly (52).