CN113296344B

CN113296344B - Teaching auxiliary device for intelligent teaching system

Info

Publication number: CN113296344B
Application number: CN202110442190.2A
Authority: CN
Inventors: 印洁; 王磊; 印松; 朱光顺
Original assignee: Wuhu Hongjia Technology Co ltd
Current assignee: Wuhu Hongjia Technology Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2022-03-08
Anticipated expiration: 2041-04-23
Also published as: CN113296344A

Abstract

One or more embodiments of the present disclosure provide a teaching assistance device for an intelligent teaching system, which includes a frame, foot rests fixed to two sides of a bottom end of the frame, walking wheels movably connected to the bottom end of the foot rests, a back plate fixed to an upper end of the frame, a projection screen disposed on the back plate, the projection screen being unfolded downward by a folding mechanism and moving downward synchronously with a driving support rod, the projection screen being positioned by a one-way positioning mechanism passing over the upper end, and external threads on the support rod being engaged with a zipper mechanism to adjust a projection orientation, the pulling rod being pulled outward to rotate by the driving zipper mechanism to engage the driving support rod to move downward continuously to pass over the one-way positioning mechanism at a lower end to completely unfold the projection screen and simultaneously drive a support seat to move downward synchronously to stabilize the support, the projection screen being positioned stably by the one-way positioning mechanism at the lower end, and being disengaged by a push-pull rod to move upward, meanwhile, the projection screen is recovered and reset under the action of the torsion spring by unlocking the one-way limiting mechanism through the bump.

Description

Teaching auxiliary device for intelligent teaching system

Technical Field

One or more embodiments of this description relate to intelligent teaching equipment technical field, especially relate to an intelligent teaching is teaching auxiliary device for system.

Background

Along with scientific and technological development, wisdom campus, wisdom classroom obtain using gradually and develop, and current traditional blackboard hardly satisfies the development requirement of intellectuality, multi-functionalization, and the mode of using the teaching is comparatively dull, so that be unfavorable for present and future, the requirement of more intelligent, high-efficient teaching, and current teaching equipment who is applied to intelligent teaching system, often its supporting auxiliary device's design is still not mature enough, so that it is convenient, high-efficient inadequately when teaching is used or is adjusted, so that still be not enough to satisfy the higher practicality requirement in the in-service use.

Disclosure of Invention

In view of this, an object of one or more embodiments of the present disclosure is to provide a teaching assistance device for an intelligent teaching system, so as to implement a function of further convenient, efficient, and auxiliary adjustment.

In view of the above object, one or more embodiments of the present specification provide a teaching assistance apparatus for an intelligent teaching system, including:

the device comprises a frame, wherein foot rests are fixed on two sides of the bottom end of the frame, walking wheels are movably connected to the bottom end of the foot rests, a back plate is fixed to the upper end of the frame, a projection curtain is arranged on the back plate, an unfolding and folding mechanism is arranged on the back plate and used for unfolding and folding the projection curtain, and a torsion spring is arranged in the unfolding and folding mechanism;

the supporting rods are vertically inserted into two sides of the rack, the top ends of the supporting rods are connected to the unfolding and folding mechanism in a transmission mode, the bottom ends of the supporting rods are fixedly provided with supporting seats, and external threads are arranged on the outer side faces of the upper end portions of the supporting rods;

the one-way limiting mechanisms are arranged at the inner bottom ends of the unfolding and folding mechanisms, and two groups of one-way limiting mechanisms are vertically and adjacently and symmetrically arranged and are used for one-way limiting the upward recovery of the projection curtain;

the zipper mechanism is arranged in the rack, the zipper mechanism is connected with a pull rod in a transmission way, and a convex block is arranged at the side end of the pull rod;

the projection curtain is unfolded downwards through the unfolding and folding mechanism, the transmission supporting rod moves downwards synchronously, the position is limited by the one-way limiting mechanism at the upper end, the external thread on the supporting rod is abutted to the zipper mechanism and is meshed with the zipper mechanism, the outer pull rod is used for driving the zipper mechanism to rotate, the supporting rod is driven to continuously move downwards to cross the one-way limiting mechanism at the lower end, the supporting seat is abutted to the pressing support, the push-back rod is used for driving the zipper mechanism to rotate, the supporting rod is driven to move upwards and be disengaged from the engagement, meanwhile, the one-way limiting mechanism is unlocked through the lug in the lump, and the projection curtain is recovered and reset under the action of the torsion spring.

Preferably, exhibition receipts mechanism is including spool, spout, slide bar, and the backplate top is transversely located to the spool, and projection curtain cloth is convoluteed on the spool, and both sides on the vertical backplate that is fixed in of spout, projection curtain head end both sides are fixed in on the slide bar, and slide bar sliding connection is in the spout to can follow the spout and slide from top to bottom, slide bar one end runs through out the spout, and fixed connection is in the bracing piece top, and torsional spring connection is in the spool side.

Preferably, the one-way limiting mechanism comprises a limiting block, one end of the limiting block is inserted into the inner side wall of the sliding groove to slide along the direction perpendicular to the back plate, a spring is connected between one end of the limiting block inserted into the sliding groove and the sliding groove, the top end face of the limiting block is designed to be an arc surface, and the bottom end face of the limiting block is designed to be a plane.

Preferably, the zipper mechanism is including the nut, nut swing joint is in the frame, and the bracing piece is worn to establish along the nut to the external screw thread on the accessible bracing piece is connected with the nut meshing, and the nut outer lane is coaxial to be fixed with outer ring gear, is equipped with the dentate arch on the side of one side of pull rod to with outer ring gear thread engagement, be close to spring one side on the stopper and be equipped with the gag lever post, the pull rod pushes back, moves back in the lump in order to drive the lug, in order to support and press the gag lever post, in order to inwards support and press the stopper.

Preferably, the bottom end of the limiting rod at the lower end penetrates into the rack and is positioned on one side of the pull rod, and the top end of the limiting rod at the lower end extends upwards and abuts against the front end of the limiting rod at the upper end.

Preferably, the lug side end face is designed to be cambered.

Preferably, the bottom end face of the supporting seat is provided with a rubber friction layer.

From the above, it can be seen that the teaching assistance device for the intelligent teaching system provided by one or more embodiments of the present disclosure is provided with a frame, foot rests are fixed on two sides of the bottom end of the frame, walking wheels are movably connected to the bottom end of the foot rests, so as to be flexibly used along with convenient transfer of different teaching places of a teacher, a back plate is fixed at the upper end of the frame, a projection curtain is arranged on the back plate, a folding and unfolding mechanism is arranged on the back plate, and is used for unfolding and folding the projection curtain, so as to receive optical projection through the projection curtain, so as to be beneficial to enrichment of various intelligent teaching forms and convenient operation and use, a support rod is vertically inserted on two sides of the frame, the top end of the support rod is in transmission connection with the folding and unfolding mechanism, a support seat is fixed at the bottom end of the support rod, so as to drive the support seat to move down and stably support on a support surface when the projection curtain is unfolded and used, thereby achieving the effect of preventing shaking, in order to avoid influencing the definition and stability of an output image signal, specifically, the outer side surface of the upper end of the supporting rod is provided with external threads, the inner bottom end of the unfolding and folding mechanism is provided with a one-way limiting mechanism, two groups of the external threads are symmetrically arranged along the vertical direction and are used for upwards recycling the one-way limiting projection screen, the frame is internally provided with a zipper mechanism, the zipper mechanism is connected with a pull rod in a transmission way, and the side end of the pull rod is provided with a lug, so that when the unfolding and the use are needed, the projection screen is downwards unfolded through the unfolding and folding mechanism and synchronously downwards moves through the transmission supporting rod so as to firstly pass through the one-way limiting mechanism at the upper end for limiting, meanwhile, the external threads on the supporting rod are butted and meshed with the zipper mechanism, thereby firmly unfolding most of the projection screen so as to avoid recycling and resetting, so as to adjust the angular distance of a test receiving projection, and the position of the frame is adjusted so as to reach the optimal projection position, and then the pull rod is rotated through the transmission zipper mechanism, because the external screw thread on the bracing piece moves down and just butt meshing in zip mechanism, thereby the meshing transmission bracing piece continues to move down and cross the one-way stop gear of lower extreme, with launch the projection curtain completely, and drive the supporting seat simultaneously and move down in step and support with firm support, the spacing projection curtain of the one-way stop gear of lower extreme that stabilizes is passed through simultaneously retrieves and resets, in order to realize convenient adjustment and firm use, treat to use the completion back, through returning the push-and-pull rod, in order to drive zip mechanism gyration, in order to drive the bracing piece and shift up and break away from the meshing, simultaneously through the one-way stop gear of lug unblock in the lump, thereby the projection curtain is retrieved and resets under the effect of torsional spring, in order to do benefit to convenient laborsaving use, realize from this that further convenient, the function of the supplementary regulation of efficient is used, in order to do benefit to satisfy higher practicality requirement.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a side view of a one-way stop mechanism according to an embodiment of the present invention;

fig. 3 is a top view of a tie rod according to an embodiment of the present invention.

In the figure: 1. a frame; 2. a foot rest; 21. a traveling wheel; 3. a back plate; 4. a projection screen; 5. a folding and unfolding mechanism; 51. a reel; 52. a chute; 53. a slide bar; 6. a support bar; 61. a supporting seat; 62. a rubber friction layer; 7. a one-way limiting mechanism; 71. a limiting block; 72. a spring; 8. a zipper mechanism; 81. a nut; 82. an outer ring gear; 9. a pull rod; 10. a bump; 11. a limiting rod.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

A teaching auxiliary device for an intelligent teaching system is disclosed, as shown in figures 1 to 3, comprising a frame 1, foot stands 2 fixed on two sides of the bottom end of the frame 1, walking wheels 21 movably connected with the bottom end of the foot stands 2, a back plate 3 fixed on the upper end of the frame 1, a projection screen 4 arranged on the back plate 3, a folding mechanism 5 arranged on the back plate 3 for unfolding and folding the projection screen 4, torsion springs arranged in the folding mechanism 5, support rods 6 vertically inserted on two sides of the frame 1, a support seat 61 connected with the top end of the support rod 6 in a transmission manner, a support seat 61 fixed on the bottom end of the support rod 6, external threads arranged on the outer side surface of the upper end of the support rod 6, one-way limiting mechanisms 7 arranged at the inner bottom end of the folding mechanism 5, two sets arranged symmetrically and vertically adjacent for upwards recycling the one-way limiting projection screen 4, a zipper mechanism 8 arranged in the frame 1, a pull rod 9 connected with the zipper mechanism 8 in a transmission manner, the side end of the pull rod 9 is provided with a convex block 10, the projection screen 4 is unfolded downwards through the unfolding and folding mechanism 5, the transmission support rod 6 synchronously moves downwards to be limited by the one-way limiting mechanism 7 at the upper end, meanwhile, the external thread on the support rod 6 is abutted and meshed with the zipper mechanism 8, the transmission zipper mechanism 8 rotates through the outer pull rod 9 to drive the support rod 6 to continuously move downwards to cross the one-way limiting mechanism 7 at the lower end, so that the support seat 61 is abutted and supported, the push-pull rod 9 is pulled back to drive the zipper mechanism 8 to rotate so as to drive the support rod 6 to move upwards and be disengaged, and meanwhile, the one-way limiting mechanism 7 is unlocked through the convex block 10 together, so that the projection screen 4 is recovered and reset under the action of the torsion spring.

The invention is provided with a frame 1, foot stands 2 are fixed on two sides of the bottom end of the frame 1, walking wheels 21 are movably connected with the bottom ends of the foot stands 2, so that the invention can be flexibly used along with the convenient transfer of different teaching places of a teacher, a back plate 3 is fixed on the upper end of the frame 1, a projection curtain 4 is arranged on the back plate 3, a folding mechanism 5 is arranged on the back plate 3 and is used for unfolding and folding the projection curtain 4, so as to receive optical projection through the projection curtain 4, thereby being beneficial to the enrichment of various intelligent teaching forms and convenient operation and use, simultaneously, supporting rods 6 are vertically inserted on two sides of the frame 1, the top ends of the supporting rods 6 are in transmission connection with the folding mechanism 5, supporting seats 61 are fixed on the bottom ends of the supporting rods 6, so that when the projection curtain 4 is unfolded and used along with the folding mechanism 5, the supporting seats 61 are driven to move downwards to be stably supported on a supporting surface, thereby achieving the effects of stable support and avoiding shaking during use, in order to avoid influencing the definition and stability of the output image signal, specifically, the outer side surface of the upper end part of the support rod 6 is provided with external threads, the inner bottom end of the unfolding and folding mechanism 5 is provided with one-way limiting mechanisms 7, and two groups are symmetrically arranged along the vertical direction and are used for upwards recycling the one-way limiting projection curtain 4, the frame 1 is internally provided with a zipper mechanism 8, the zipper mechanism 8 is in transmission connection with a pull rod 9, the side end of the pull rod 9 is provided with a lug 10, so that when the projection curtain 4 is unfolded downwards through the unfolding and folding mechanism 5 and the support rod 6 is driven to synchronously downwards move so as to firstly pass through the one-way limiting mechanism 7 at the upper end for limiting, and the external threads on the support rod 6 are abutted and meshed with the zipper mechanism 8, thereby stably unfolding most of the projection curtain 4 to avoid recycling and resetting, so as to adjust the angular distance for testing and receiving the projection, and the position of the frame 1 is adjusted, to achieve the best projection orientation, the outer pull rod 9 is used to drive the zipper mechanism 8 to rotate, the outer threads on the support rod 6 move downwards and just abut against and engage with the zipper mechanism 8, so that the drive support rod 6 is engaged to continuously move downwards to cross the one-way limiting mechanism 7 at the lower end to completely unfold the projection screen 4, and simultaneously drive the support seat 61 to synchronously move downwards to stably support in a pressing manner, and simultaneously the one-way limiting mechanism 7 at the lower end is used to stably limit the projection screen 4 to recover and reset, so as to realize convenient adjustment and stable use, after the use is finished, the push-pull rod 9 is returned to drive the zipper mechanism 8 to rotate so as to drive the support rod 6 to move upwards and disengage from engagement, and simultaneously the one-way limiting mechanism 7 is unlocked by the bump 10, so that the projection screen 4 is recovered and reset under the action of the torsion spring, so as to be beneficial to convenient and labor-saving use, thereby realizing the further convenient, efficient auxiliary adjustment and use function, so as to be beneficial to meeting higher practicability requirements.

In the embodiment of the present invention, the folding and unfolding mechanism 5 includes a winding shaft 51, a sliding groove 52, and a sliding rod 53, the winding shaft 51 is transversely disposed at the top end of the back plate 3, the projection screen 4 is wound on the winding shaft 51 to be freely rotatable to fold and unfold the projection screen 4, and a torsion spring is connected to a side end of the winding shaft 51 for driving the winding shaft 51 to fold and unfold, the sliding groove 52 is vertically fixed at two sides of the back plate 3, two sides of a head end of the projection screen 4 are fixed on the sliding rod 53, the sliding rod 53 is slidably connected in the sliding groove 52 to be slidable up and down along the sliding groove 52, one end of the sliding rod 53 penetrates through the sliding groove 52 and is fixedly connected to the top end of the supporting rod 6 to realize stable sliding and drive the supporting rod 6 to move synchronously to press and support.

In the embodiment of the present invention, the one-way limiting mechanism 7 includes a limiting block 71, the limiting block 71 is disposed in the sliding groove 52, one end of the limiting block 71 is inserted into the inner sidewall of the sliding groove 52 to slide along the direction perpendicular to the back plate 3, a spring 72 is connected between one end of the limiting block 71 inserted into the sliding groove 52 and the sliding groove 52, the top end surface of the limiting block 71 is designed to be an arc surface, and the bottom end surface of the limiting block 71 is designed to be a flat surface, so that when the sliding rod 53 moves downward, the sliding rod can abut against the top end of the arc surface of the limiting block 71 to naturally press the limiting block 71 to slide inward and compress the spring 72, and since the bottom end surface of the limiting block 71 is designed to be a flat surface, the sliding rod 53 can unidirectionally move downward to pass over the limiting block 71 and unidirectionally limit the sliding rod 53 to move upward to reset through the limiting block 71.

In the embodiment of the present invention, the zipper mechanism 8 includes a nut 81, the nut 81 is movably connected in the frame 1, the support rod 6 is inserted along the nut 81 and is engaged with the nut 81 through an external thread on the support rod 6, an external gear 82 is coaxially fixed on an outer ring of the nut 81, a side end of one side of the pull rod 9 is provided with a tooth-shaped protrusion to be engaged with the external gear 82, a limit rod 11 is arranged on one side of the limit block 71 close to the spring 72, so that the external gear 82 is engaged and driven to rotate through the external pull rod 9 to drive the nut 81 to rotate synchronously, the support rod 6 is driven to move downwards further to completely unfold the projection screen 4 and drive the support seat 61 to firmly press and support, the support rod 6 is naturally driven to move upwards and disengage through the push-pull rod 9, and simultaneously the limit rod 11 is pressed by the protrusion 10 moving backwards together to inwardly and synchronously press the limit block 71, the one-way limiting mechanism 7 is unlocked together, so that the projection curtain 4 is recovered and reset under the action of the torsion spring, and the effects of convenience, labor saving and auxiliary use are achieved.

In the embodiment of the invention, the bottom end of the lower limiting rod 11 penetrates into the frame 1 and is positioned at one side of the pull rod 9, the top end of the lower limiting rod 11 extends upwards and abuts against the front end of the upper limiting rod 11, so that when the lug 10 moves back along with the pull rod 9, the lower limiting rod 11 is pressed to move inwards and abuts against the upper limiting rod 11 to move inwards together, so as to completely unlock the function of the one-way limiting mechanism 7, and when the slide rod 53 slides downwards to cross and abut against the upper limiting block 71 to move inwards, the lower limiting block 71 is not influenced, so that the effects of unlocking together and avoiding interference with each other during one-way limiting are achieved.

In the embodiment of the present invention, the side end surface of the bump 10 is designed to be a cambered surface, so as to facilitate efficient movement and pressing.

In the embodiment of the present invention, a rubber friction layer 62 is disposed on the bottom end surface of the supporting seat 61, so as to further facilitate the effects of flexible buffering and efficient and stable supporting.

In the teaching auxiliary device for the intelligent teaching system disclosed by the invention, when in use, foot stands 2 are fixed at two sides of the bottom end of a frame 1, walking wheels 21 are movably connected at the bottom end of the foot stands 2 for convenient and flexible use, a back plate 3 is fixed at the upper end of the frame 1, a projection curtain 4 is arranged on the back plate 3, an unfolding and folding mechanism 5 is arranged on the back plate 3 for unfolding and folding the projection curtain 4, when in unfolding use, the projection curtain 4 is unfolded downwards through the unfolding and folding mechanism 5 to drive a support rod 6 to synchronously move downwards so as to firstly pass through a one-way limiting mechanism 7 at the upper end for limiting, and simultaneously, external threads on the support rod 6 are abutted and engaged with a zipper mechanism 8 so as to stably unfold most of the projection curtains 4 to avoid recovery and reset, so as to adjust the angular distance for testing and receiving projection, and the position of the frame 1 is adjusted to achieve the optimal projection position, and then passes through an external pull rod 9, rotate with transmission zip mechanism 8, continue to move down with meshing transmission bracing piece 6 and cross one-way stop gear 7 of lower extreme, with launch projection curtain 4 completely, and drive supporting seat 61 simultaneously and move down in step and support with firm support, the spacing projection curtain 4 of the one-way stop gear 7 firm through the lower extreme simultaneously retrieves and resets, in order to realize convenient adjustment and firm use, after waiting to use the completion, through push-pull rod 9, with transmission zip mechanism 8 gyration, in order to drive bracing piece 6 to shift up and break away from the meshing, simultaneously through one-way stop gear 7 of lug 10 unblock in the lump, thereby projection curtain 4 retrieves and resets under the effect of torsional spring, in order to do benefit to convenient laborsaving use, thereby realize further convenient, the function of efficient auxiliary adjustment use.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.

Claims

1. The utility model provides an intelligence teaching auxiliary device for teaching system which characterized in that includes:

the device comprises a rack, wherein foot rests are fixed on two sides of the bottom end of the rack, walking wheels are movably connected to the bottom end of the foot rests, a back plate is fixed to the upper end of the rack, a projection curtain is arranged on the back plate, an unfolding and folding mechanism is arranged on the back plate and used for unfolding and folding the projection curtain, and a torsion spring is arranged in the unfolding and folding mechanism;

the supporting rods are vertically inserted into two sides of the rack, the top ends of the supporting rods are connected to the unfolding and folding mechanism in a transmission mode, supporting seats are fixed at the bottom ends of the supporting rods, and external threads are arranged on the outer side faces of the upper end portions of the supporting rods;

the one-way limiting mechanisms are arranged at the inner bottom end of the unfolding and folding mechanism, are symmetrically arranged in two groups along the vertical direction and are used for one-way limiting the upward recovery of the projection screen;

the zipper mechanism is arranged in the rack, the zipper mechanism is connected with a pull rod in a transmission manner, and a convex block is arranged at the side end of the pull rod;

through mechanism is launched downwards to exhibition receipts projection curtain, with the transmission the bracing piece moves down in step, in order via the upper end one-way stop gear is spacing, simultaneously external screw thread butt on the bracing piece mesh in zip mechanism is through outer pulling the pull rod, with the transmission zip mechanism rotates, in order to drive the bracing piece continues to move down and crosses the lower extreme one-way stop gear, so that the supporting seat supports and presses the holding surface, through pushing back the pull rod, with the transmission zip mechanism gyration, in order to drive the bracing piece shifts up and breaks away from the meshing, simultaneously passes through the lug unblock in the lump one-way stop gear, so that the projection curtain is in retrieve the restoration under the torsional spring effect.

2. The teaching assistance device for the intelligent teaching system according to claim 1, wherein the unfolding and folding mechanism comprises a scroll, a sliding groove and a sliding rod, the scroll is transversely arranged at the top end of the back plate, the projection screen cloth is wound on the scroll, the sliding groove is vertically fixed at two sides of the back plate, two sides of the head end of the projection screen cloth are fixed on the sliding rod, the sliding rod is slidably connected in the sliding groove to be capable of being slid up and down along the sliding groove, one end of the sliding rod penetrates out of the sliding groove and is fixedly connected at the top end of the supporting rod, and the torsion spring is connected at the side end of the scroll.

3. The teaching aid device for the intelligent teaching system according to claim 2, wherein the one-way limiting mechanism comprises a limiting block, one end of the limiting block is inserted into the inner side wall of the sliding groove to slide along the direction perpendicular to the back plate, a spring is connected between one end of the limiting block inserted into the sliding groove and the sliding groove, the top end face of the limiting block is designed to be an arc face, and the bottom end face of the limiting block is designed to be a plane face.

4. The teaching assistance device for the intelligent teaching system according to claim 3, wherein the zipper mechanism comprises a nut, the nut is movably connected in the frame, the support rod is inserted along the nut and can be engaged with the nut through an external thread on the support rod, an external gear ring is coaxially fixed on the outer ring of the nut, a tooth-shaped protrusion is arranged on the side end of one side of the pull rod to be engaged with the external gear ring through a thread, a limit rod is arranged on the limit block near the spring, the pull rod is pushed back to drive the protrusion to move back together to press the limit rod, so as to press the limit block inwards.

5. The teaching aid device according to claim 4, wherein the bottom end of the lower stop lever penetrates into the frame and is located on one side of the pull rod, and the top end of the lower stop lever extends upward and abuts against the front end of the upper stop lever.

6. An intelligent teaching aid as claimed in claim 4, wherein the lug side end face is designed to be a cambered surface.

7. The teaching assistance device for the intelligent teaching system according to claim 1, wherein a rubber friction layer is provided on the bottom end surface of the support base.