CN110757986B - Heap teaching is with multi-functional blackboard - Google Patents
Heap teaching is with multi-functional blackboard Download PDFInfo
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- CN110757986B CN110757986B CN201911067593.2A CN201911067593A CN110757986B CN 110757986 B CN110757986 B CN 110757986B CN 201911067593 A CN201911067593 A CN 201911067593A CN 110757986 B CN110757986 B CN 110757986B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
Abstract
A stack type multifunctional blackboard for teaching comprises a blackboard box and a control device arranged in the blackboard box, wherein the control device comprises a control rod capable of being pulled downwards, a blackboard cavity is arranged in the blackboard box, two blackboard devices are arranged in the blackboard cavity, the blackboard devices on the front side are matched with the control device, the blackboard device also comprises a front matching belt pulley arranged in the blackboard box, and a power device is arranged in the front matching belt pulley; this device mechanism is simple, uses portably, can realize automatically through controlling means after the front side blackboard uses changing out the rear side blackboard, and convenient and fast has avoided in the teaching work need erasing just can continue the problem of using after the blackboard is full, has improved teaching efficiency greatly, improves the quality of teaching, and the blackboard adopts to pile up in this device simultaneously and places, has saved the space greatly.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a stacked multifunctional blackboard for teaching.
Background
In teaching work, the use of blackboard is indispensable, and many teachers are used to the content and the important knowledge point record on the blackboard of having a lesson, make things convenient for student's record and study, when the content was many on class, need to erase just can continue to use the blackboard, wastes time and energy, reduces teaching efficiency and teaching quality, if when preparing more blackboard, its area occupied is too big, has great drawback, needs to improve.
Disclosure of Invention
Aiming at the technical defects, the invention provides a stacked multifunctional blackboard for teaching, which can overcome the defects.
The invention relates to a stacked multifunctional blackboard for teaching, which comprises a blackboard box and a control device arranged in the blackboard box, wherein the control device comprises a control rod capable of being pulled downwards, a blackboard cavity is arranged in the blackboard box, two blackboard devices are arranged in the blackboard cavity, and the blackboard devices on the front side are matched with the control device;
also comprises a front matching cavity arranged in the blackboard box, a power device is arranged in the front matching cavity, the power device is matched with the control rod in the power device, a friction motion device is arranged in the blackboard box, the friction motion device is matched with the power device, a guide device is arranged in the blackboard box, the blackboard device is matched with the guide device through a guide block arranged in the blackboard device, the friction motion device is matched with the guide block, a switching cavity is arranged in the blackboard box, a switching device is arranged in the switching cavity, the switching device is matched with the blackboard device, a push-out device is arranged in the switching cavity and is matched with the switching device, the switching device can enable the push-out device to be matched with the blackboard device at the rear side when the blackboard device moves to a certain position.
Preferably, controlling means include bilateral symmetry slide set up in blackboard chamber diapire and lower extreme extend to the control cooperation pole of blackboard case downside controls fixedly between the control cooperation pole lower extreme be equipped with the control lever, the control lever up end with through control reset spring fixed connection between the blackboard case lower extreme, control cooperation pole upper end and front side blackboard device cooperation.
Preferably, power device including set up in the blackboard case and be located switch the chamber upside preceding cooperation chamber, preceding cooperation chamber right wall is fixed and is equipped with the motor, motor left end power is connected with the power shaft, the last fixed power bevel gear that is equipped with of power shaft, be equipped with bilateral symmetry's side friction chamber in the blackboard case, the power shaft left end extends to in the side friction chamber and the left end fixed side driving pulley that is equipped with.
Preferably, the friction movement device comprises a front friction cavity arranged in the blackboard box and positioned at the front side of the front matching cavity, the rear wall of the front friction cavity is bilaterally and symmetrically provided with a front friction belt pulley shaft, the front end of the front friction belt pulley shaft is fixedly provided with a front friction belt pulley, the rear wall of the front friction cavity is positioned between the front friction belt pulley shafts and bilaterally and symmetrically provided with a front matching belt pulley shaft, the front end of the front matching belt pulley shaft is fixedly provided with a front matching belt pulley matched with the front friction belt pulley through a toothed friction belt, the rear end of the front friction belt pulley shaft at the left side extends into the front matching cavity, the rear end of the front friction belt pulley shaft at the left side is fixedly provided with a front power bevel gear meshed with the power bevel gear, the front matching cavity is internally provided with a front transmission belt pulley fixedly connected to the front friction belt pulley shaft, the blackboard box is internally provided with a friction transmission cavity, the rear end of the right front friction belt wheel shaft extends into the friction transmission cavity, and a rear transmission matching belt wheel is fixedly arranged at the rear end;
in addition, a back friction cavity is arranged in the blackboard box and is positioned at the back side of the friction transmission cavity, back friction belt wheel shafts are symmetrically arranged on the front wall of the back friction cavity in a left-right rotating mode, the front wall of the rear friction cavity is provided with rear matching belt wheel shafts which are positioned between the rear friction belt wheel shafts in a bilateral symmetry rotating way, a rear friction belt wheel is fixedly arranged at the rear end of the rear friction belt wheel shaft, a rear matching belt wheel matched with the rear friction belt wheel through a belt-toothed friction belt is fixedly arranged at the rear end of the rear matching belt wheel shaft, the front end of the rear friction belt wheel shaft at the left side extends into the front matching cavity, and a rear transmission bevel gear meshed with the power bevel gear is fixedly arranged at the front end of the rear friction belt wheel shaft at the left side, a rear transmission belt wheel fixedly connected to the rear friction belt wheel shaft and matched with the rear transmission matching belt wheel is arranged in the front matching cavity, the front end of the rear matching belt wheel shaft on the right side extends into the friction transmission cavity, and a front transmission matching belt wheel matched with the front transmission belt wheel is fixedly arranged at the front end of the rear matching belt wheel shaft on the right side;
the side friction cavity is symmetrically and rotatably provided with a side belt pulley shaft opposite to the inner wall, side belt pulley wheels are symmetrically and fixedly arranged on the side belt pulley shaft in a left-right mode, the side belt pulley shaft is symmetrically and rotatably arranged opposite to the inner wall in a left-right mode, a side friction belt pulley matched with the side belt pulley through a belt-toothed friction belt is fixedly arranged on the side belt pulley shaft, and the side driving belt pulley is matched with the side belt pulley and the side friction belt pulley;
the friction transmission cavity comprises a friction transmission cavity front wall, and is characterized by further comprising a turning transmission shaft rotatably arranged on the friction transmission cavity front wall, a turning transmission belt pulley matched with the front transmission matched belt pulley and the front transmission belt pulley is fixedly arranged on the turning transmission shaft, a turning matched bevel gear is fixedly arranged at the rear end of the turning transmission shaft, a power switching shaft is rotatably arranged on the bottom wall of the friction transmission cavity, a turning bevel gear meshed with the turning matched bevel gear is fixedly arranged at the upper end of the power switching shaft, the lower end of the power switching shaft extends into the switching cavity, and a switching power bevel gear (not shown in the figure) is fixedly.
Preferably, guider is including running through switch the chamber and communicate the preceding guide way in blackboard chamber, preceding guide way bilateral symmetry is equipped with the side guide way of intercommunication, the side guide way is close to one side intercommunication each other and is equipped with the back guide way, the back guide way be close to one side each other be equipped with the propelling movement groove of preceding guide way intercommunication.
Preferably, the front side blackboard device including bilateral symmetry slide set up in guide block in the preceding guide way, be equipped with fixed connection in the blackboard chamber in the blackboard of guide block lower extreme, pass through before the blackboard lower extreme face back be equipped with control cooperation pole sliding fit's control cooperation groove, the rear side blackboard device set up in the propelling movement groove with back guide way juncture.
Preferably, the switching device comprises a rear switching chute which is arranged on the bottom wall of the switching cavity and is communicated with the rear guide groove on the left side, a rear switching block of which the rear end extends into the rear guide groove is arranged in the rear switching chute in a sliding manner, the front end of the rear switching block is fixedly connected with the front wall of the rear switching chute through a rear switching block return spring, the bottom wall of the switching cavity is provided with a front switching chute communicated with the front guide groove, a front switching block of which the front end extends into the front guide groove is arranged in the front switching chute in a sliding manner, the rear wall of the front switching block is fixedly connected with the rear wall of the front switching chute through a front switching block return spring, the right end face of the front switching block is fixedly provided with a front switching rod, the upper side of the front switching rod is hinged with a pawl, the rear wall of the switching cavity is provided with a switching control chute, and a shaft fixing sliding block is arranged, the left end face of the shaft fixing sliding block is fixedly connected with the rear switching block through a rear switching rod, a switching action shaft is rotatably arranged on the rear end face of the shaft fixing sliding block, and a switching action bevel gear is fixedly arranged at the rear end of the switching action shaft.
Preferably, the pushing device comprises a wire shaft rotatably arranged on the bottom wall of the switching cavity, a wire wheel (not shown) is fixedly arranged on the wire shaft, pull wires are wound on the wire wheel (not shown), a wire wheel bevel gear matched with the pawl is fixedly arranged at the upper end of the wire shaft, the wire wheel bevel gear only rotates on the wire wheel (not shown) under the action of the pawl, pushing grooves are symmetrically formed in the bottom wall of the switching cavity in the left-right direction, pushing magnets in magnetic force fit with the guide blocks on the rear side are slidably arranged in the pushing grooves, the rear end faces of the pushing magnets are fixedly connected with the rear wall of the pushing grooves through pushing springs, and the pull wires are fixedly connected with the rear end faces of the pushing magnets.
To sum up, this device mechanism is simple, uses portably, can realize automatically through controlling means after the front side blackboard uses changing out the rear side blackboard, and convenient and fast has avoided in the teaching work need erasing just can continue the problem of using after the blackboard is full, has improved teaching efficiency greatly, improves the teaching quality, and the blackboard adopts to pile up in this device simultaneously and places, has saved the space greatly.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a multi-functional blackboard for stack teaching according to the present invention;
FIG. 2 is a schematic view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic view of the structure at B-B in FIG. 1.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
As shown in fig. 1-3, the multifunctional blackboard for stack-type teaching of the present invention comprises a blackboard case 10 and a control device disposed in the blackboard case 10, wherein the control device comprises a control rod 20 capable of being pulled downward, a blackboard cavity 19 is disposed in the blackboard case 10, two sets of blackboard devices are disposed in the blackboard cavity 19, and the blackboard device on the front side is matched with the control device;
the blackboard eraser further comprises a front matching cavity 81 arranged in the blackboard box 10, a power device is arranged in the front matching cavity 81, the power device is matched with the control rod 20 in the power device, a friction motion device is arranged in the blackboard box 10, the friction movement device is matched with the power device, a guide device is arranged in the blackboard box 10, the blackboard device is matched with the guide device through a guide block 13 arranged in the blackboard device, the friction movement device is matched with the guide block 13, a switching cavity 18 is arranged in the blackboard box 10, a switching device is arranged in the switching cavity 18, the switching device is matched with the blackboard device, a push-out device is arranged in the switching chamber 18, the push-out device is matched with the switching device, the switching device can enable the push-out device to be matched with the blackboard device at the rear side when the blackboard device moves to a certain position.
Beneficially, the control device includes control matching rods 23 which are arranged on the bottom wall of the blackboard cavity 19 in a bilateral-symmetric sliding manner, the lower ends of the control matching rods extend to the lower side of the blackboard box 10, the control rod 20 is fixedly arranged between the lower ends of the control matching rods 23, the upper end face of the control rod 20 is fixedly connected with the lower end face of the blackboard box 10 through a control return spring 21, and the upper ends of the control matching rods 23 are matched with the blackboard device on the front side.
Advantageously, the power device comprises the front matching cavity 81 which is arranged in the blackboard box 10 and is located on the upper side of the switching cavity 18, the right wall of the front matching cavity 81 is fixedly provided with the motor 42, the left end of the motor 42 is in power connection with the power shaft 41, the power shaft 41 is fixedly provided with the power bevel gear 67, the blackboard box 10 is provided with the side friction cavities 31 which are symmetrical left and right, the left end of the power shaft 41 extends into the side friction cavities 31, and the left end is fixedly provided with the side driving pulley 30.
Beneficially, the friction motion device includes a front friction chamber 11 disposed in the blackboard box 10 and located at the front side of the front matching chamber 81, a front friction pulley shaft 15 is rotationally arranged on the rear wall of the front friction chamber 11 in a bilateral symmetry manner, a front friction pulley 25 is fixedly arranged at the front end of the front friction pulley shaft 15, a front matching pulley shaft 17 is rotationally arranged on the rear wall of the front friction chamber 11 between the front friction pulley shafts 15 in a bilateral symmetry manner, a front matching pulley 26 matched with the front friction pulley 25 through a toothed friction belt is fixedly arranged at the front end of the front matching pulley shaft 17, the rear end of the front friction pulley shaft 15 at the left side extends into the front matching chamber 81 and is fixedly arranged at the rear end thereof with a front power bevel gear 68 meshed with the power bevel gear 67, a front driving pulley 27 fixedly connected to the front friction pulley shaft 15 is disposed in the front matching chamber 816, and a front friction bevel gear 68 located at the right side of the front matching chamber 81 and located at the rear side of the front friction chamber 11 is disposed in the blackboard The rear end of the right front friction belt wheel shaft 15 extends into the friction transmission cavity 50, and a rear transmission matching belt wheel 49 is fixedly arranged at the rear end;
in addition, a rear friction cavity 37 located at the rear side of the friction transmission cavity 50 is arranged in the blackboard box 10, rear friction pulley shafts 32 are symmetrically arranged on the front wall of the rear friction cavity 37 in a left-right rotating manner, rear matching pulley shafts 38 located between the rear friction pulley shafts 32 are symmetrically arranged on the front wall of the rear friction cavity 37 in a left-right rotating manner, a rear friction pulley 36 is fixedly arranged at the rear end of each rear friction pulley shaft 32, a rear matching pulley 39 matched with the rear friction pulley 36 through a toothed friction belt is fixedly arranged at the rear end of each rear matching pulley shaft 38, the front end of the left rear friction pulley shaft 32 extends into the front matching cavity 81, a rear transmission bevel gear 66 meshed with the power bevel gear 67 is fixedly arranged at the front end of the left rear friction pulley shaft 32, and a rear transmission pulley 40 fixedly connected to the rear friction pulley shaft 32 and matched with the rear transmission matching pulley 49 is arranged in the front matching cavity 81, the front end of the right rear matching belt wheel shaft 38 extends into the friction transmission cavity 50, and a front transmission matching belt wheel 48 matched with the front transmission belt wheel 27 is fixedly arranged at the front end;
the belt pulley device is characterized by further comprising side-matching belt pulley shafts 34 which are bilaterally symmetrically and rotationally arranged on the opposite inner walls of the side friction cavities 31, side-matching belt pulleys 33 are fixedly arranged on the side-matching belt pulley shafts 34 in a bilaterally symmetric manner, side belt pulley shafts 28 are rotationally arranged on the side friction cavities 31 in a bilaterally symmetric manner relative to the inner walls, side friction belt pulleys 29 matched with the side-matching belt pulleys 33 through toothed friction belts are fixedly arranged on the side belt pulley shafts 28, and the side driving belt pulleys 30 are matched with the side-matching belt pulleys 33 and the side friction belt pulleys 29;
the device is characterized by further comprising a turning transmission shaft 45 rotatably arranged on the front wall of the friction transmission cavity 50, a turning transmission belt pulley 46 matched with the front transmission matched belt pulley 48 and the front transmission belt pulley 27 is fixedly arranged on the turning transmission shaft 45, a turning matched bevel gear 44 is fixedly arranged at the rear end of the turning transmission shaft 45, a power switching shaft 47 is rotatably arranged on the bottom wall of the friction transmission cavity 50, a turning bevel gear 43 meshed with the turning matched bevel gear 44 is fixedly arranged at the upper end of the power switching shaft 47, the lower end of the power switching shaft 47 extends into the switching cavity 18, and a switching power bevel gear (not shown in the figure) is fixedly arranged at the lower end of the power switching shaft.
Advantageously, the guide means comprises a front guide groove 12 penetrating the switching chamber 18 and communicating with the blackboard chamber 19, the front guide groove 12 is provided with communicating side guide grooves 24 in bilateral symmetry, the side guide grooves 24 are provided with rear guide grooves 52 in communication with one side close to each other, and the side close to each other of the rear guide grooves 52 is provided with a push-out groove 69 communicating with the front guide groove 12.
Beneficially, the blackboard device on the front side comprises guide blocks 13 which are arranged in the front guide groove 12 in a sliding mode in a bilateral symmetry mode, a blackboard 14 fixedly connected to the lower end of the guide blocks 13 is arranged in the blackboard cavity 19, a control matching groove 22 in sliding fit with the control matching rod 23 penetrates through the front portion and the rear portion of the lower end face of the blackboard 14, and the blackboard device on the rear side is arranged at the junction of the push-out groove 69 and the rear guide groove 52.
Advantageously, the switching device comprises a rear switching chute 53 disposed on the bottom wall of the switching chamber 18 and communicating with the left rear guide groove 52, a rear switching block 51 having a rear end extending into the rear guide groove 52 is slidably disposed in the rear switching chute 53, a front end of the rear switching block 51 is fixedly connected with a front wall of the rear switching chute 53 through a rear switching block return spring 54, a front switching chute 70 communicating with the front guide groove 12 is disposed on the bottom wall of the switching chamber 18, a front switching block 72 having a front end extending into the front guide groove 12 is slidably disposed in the front switching chute 70, a rear wall of the front switching block 72 is fixedly connected with a rear wall of the front switching chute 70 through a front switching block return spring 71, a front switching rod 65 is fixedly disposed on a right end surface of the front switching block 72, a pawl 64 is hinged on an upper side of the front switching rod 65, a switching control chute 59 is disposed on a rear wall of the switching chamber 18, a shaft fixing sliding block 60 is slidably arranged in the switching control sliding chute 59, the left end surface of the shaft fixing sliding block 60 is fixedly connected with the rear switching block 51 through a rear switching rod 58, a switching action shaft 73 is rotatably arranged on the rear end surface of the shaft fixing sliding block 60, and a switching action bevel gear 63 is fixedly arranged on the rear end of the switching action shaft 73.
Advantageously, the pushing-out device comprises a reel shaft 61 rotatably arranged on the bottom wall of the switching chamber 18, a reel (not shown) is fixedly arranged on the reel shaft 61, a pull wire is wound on the reel (not shown), a reel bevel gear 62 matched with the pawl 64 is fixedly arranged at the upper end of the reel shaft 61, the reel bevel gear 62 only rotates on the reel (not shown) under the action of the pawl 64, pushing-out grooves 57 are symmetrically arranged on the left and right of the bottom wall of the switching chamber 18, pushing-out magnets 56 magnetically matched with the guide blocks 13 on the rear side are slidably arranged in the pushing-out grooves 57, the rear end faces of the pushing-out magnets 56 are fixedly connected with the rear walls of the pushing-out grooves 57 through pushing-out springs 55, and the pull wire is fixedly connected with the rear end faces of the pushing-out magnets 56.
The applicant will specifically describe a multi-functional blackboard for stack teaching according to the present application with reference to the accompanying drawings 1-3 and the above description:
in the initial state, the push-out spring 55 is in a compressed state, the switching operation bevel gear 63 is not engaged with the pulley bevel gear 62 and the switching power bevel gear (not shown), and the pulley bevel gear 62 is engaged with the pawl 64;
when the rear blackboard device needs to be used, the control rod 20 is pulled downwards, the motor 42 is started, the control matching rod 23 is disengaged from the front blackboard 14, the power shaft 41 rotates, the power shaft 41 drives the power bevel gear 67 to rotate, the power shaft 41 drives the side driving pulley 30 to rotate, the power bevel gear 67 drives the left rear friction pulley 36 to rotate through the rear transmission bevel gear 66 and the left rear friction pulley shaft 32, so as to drive the left rear matching pulley 39 to rotate, the rear friction pulley shaft 32 drives the right front friction pulley shaft 15 to rotate through the rear transmission pulley 40 and the rear transmission matching pulley 49, so as to drive the right front matching pulley 26 to rotate, and the power bevel gear 67 drives the left front friction pulley shaft 15 to rotate through the front power bevel gear 68, the left front friction belt pulley shaft 15 drives the left front matching belt pulley 26 to rotate through the left front friction belt pulley 25, the left front friction belt pulley shaft 15 drives the right rear matching belt pulley 38 to rotate through the front transmission belt pulley 27 and the front transmission matching belt pulley 48 so as to drive the right rear matching belt pulley 39 and the right rear friction belt pulley 36 to rotate, the power shaft 41 drives the side driving belt pulley 30 to rotate so as to drive the side matching belt pulley 33 and the side friction belt pulley 29 to rotate, and therefore the front blackboard device is conveyed to a specified position;
when the blackboard 14 on the left side is matched with the front switching block 72, the front switching block 72 moves backwards to drive the pawl 64 to be separated from the wheel bevel gear 62 through the front switching rod 65, the push-out magnet 56 drives the guide block 13 on the rear side forwards under the jacking action of the push-out spring 55 and enables the blackboard 14 on the rear side to be matched with the control matching rod 23, when the blackboard 14 is matched with the rear switching block 51, the rear switching block 51 moves forwards to drive the switching action bevel gear 63 to be matched with the wheel bevel gear 62 and the switching power bevel gear (not shown) through the rear switching rod 58, the switching power bevel gear (not shown) drives the wheel bevel gear 62 to rotate through the switching action bevel gear 63, the wheel bevel gear 62 drives the wheel (not shown) to rotate and wind to reset the push-out magnet 56, thereby pushing out the blackboard device at the rear side.
To sum up, this device mechanism is simple, uses portably, can realize automatically through controlling means after the front side blackboard uses changing out the rear side blackboard, and convenient and fast has avoided in the teaching work need erasing just can continue the problem of using after the blackboard is full, has improved teaching efficiency greatly, improves the teaching quality, and the blackboard adopts to pile up in this device simultaneously and places, has saved the space greatly.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (4)
1. The utility model provides a heap teaching is with multi-functional blackboard, includes the blackboard case and set up in controlling means in the blackboard case, its characterized in that: the control device comprises a control rod capable of being pulled downwards, a blackboard cavity is arranged in the blackboard box, two sets of blackboard devices are arranged in the blackboard cavity, and the blackboard devices on the front side are matched with the control device;
also comprises a front matching cavity arranged in the blackboard box, a power device is arranged in the front matching cavity, the power device is matched with the control rod in the control device, a friction motion device is arranged in the blackboard box, the friction motion device is matched with the power device, a guide device is arranged in the blackboard box, the blackboard device is matched with the guide device through a guide block arranged in the blackboard device, the friction motion device is matched with the guide block, a switching cavity is arranged in the blackboard box, a switching device is arranged in the switching cavity, the switching device is matched with the blackboard device, a push-out device is arranged in the switching cavity and is matched with the switching device, the switching device can enable the push-out device to be matched with the blackboard device at the rear side when the blackboard device moves to a certain position;
the guide device comprises front guide grooves penetrating through the switching cavity and communicated with the blackboard cavity, the front guide grooves are bilaterally symmetrically provided with communicated side guide grooves, the side of each side guide groove, which is close to each other, is communicated with a rear guide groove, and the side of each rear guide groove, which is close to each other, is provided with a push-out groove communicated with the front guide groove;
the blackboard device on the front side comprises guide blocks which are arranged in the front guide groove in a bilaterally symmetrical sliding manner, a blackboard fixedly connected to the lower end of the guide block is arranged in the blackboard cavity, a control matching groove in sliding fit with the control matching rod is arranged in front of and behind the lower end face of the blackboard in a penetrating manner, and the blackboard device on the rear side is arranged at the junction of the push-out groove and the rear guide groove;
the switching device comprises a rear switching chute which is arranged on the bottom wall of the switching cavity and is communicated with the rear guide groove on the left side, a rear switching block of which the rear end extends into the rear guide groove is arranged in the rear switching chute in a sliding manner, the front end of the rear switching block is fixedly connected with the front wall of the rear switching chute through a rear switching block reset spring, the bottom wall of the switching cavity is provided with a front switching chute communicated with the front guide groove, a front switching block of which the front end extends into the front guide groove is arranged in the front switching chute in a sliding manner, the rear wall of the front switching block is fixedly connected with the rear wall of the front switching chute through a front switching block reset spring, the right end face of the front switching block is fixedly provided with a front switching rod, the upper side of the front switching rod is hinged with a pawl, the rear wall of the switching cavity is provided with a switching control chute, and a shaft fixing slide block is, the left end face of the shaft fixing sliding block is fixedly connected with the rear switching block through a rear switching rod, the rear end face of the shaft fixing sliding block is rotatably provided with a switching action shaft, and the rear end of the switching action shaft is fixedly provided with a switching action bevel gear;
controlling means include bilateral symmetry slide set up in blackboard chamber diapire and lower extreme extend to the control cooperation pole of blackboard case downside controls fixedly between the control cooperation pole lower extreme be equipped with the control lever, the control lever up end with through control reset spring fixed connection under the blackboard case between the terminal surface, control cooperation pole upper end and front side blackboard device cooperation.
2. The multifunctional blackboard for stack teaching as claimed in claim 1, wherein: the power device comprises a front matching cavity arranged in the blackboard box and located on the upper side of the switching cavity, a motor is fixedly arranged on the right wall of the front matching cavity, the left end of the motor is in power connection with a power shaft, a power bevel gear is fixedly arranged on the power shaft, a lateral friction cavity is arranged in the blackboard box in a bilateral symmetry mode, and the left end of the power shaft extends to the lateral friction cavity and a lateral driving belt wheel is fixedly arranged at the left end of the power shaft.
3. The multi-functional blackboard for stack teaching as claimed in claim 2, in which: the friction motion device comprises a front friction cavity which is arranged in the blackboard box and is positioned at the front side of the front matching cavity, the rear wall of the front friction cavity is bilaterally and symmetrically provided with a front friction belt pulley shaft, the front end of the front friction belt pulley shaft is fixedly provided with a front friction belt pulley, the rear wall of the front friction cavity is positioned between the front friction belt pulley shafts and is bilaterally and symmetrically provided with a front matching belt pulley shaft, the front end of the front matching belt pulley shaft is fixedly provided with a front matching belt pulley matched with the front friction belt pulley through a toothed friction belt, the rear end of the front friction belt pulley shaft at the left side extends into the front matching cavity, the rear end of the front friction belt pulley shaft at the left side is fixedly provided with a front power bevel gear meshed with the power bevel gear, the front matching cavity is internally provided with a front transmission belt pulley fixedly connected with the front friction belt pulley shaft, and the blackboard box is internally, the rear end of the right front friction belt wheel shaft extends into the friction transmission cavity, and a rear transmission matching belt wheel is fixedly arranged at the rear end;
in addition, a back friction cavity is arranged in the blackboard box and is positioned at the back side of the friction transmission cavity, back friction belt wheel shafts are symmetrically arranged on the front wall of the back friction cavity in a left-right rotating mode, the front wall of the rear friction cavity is provided with rear matching belt wheel shafts which are positioned between the rear friction belt wheel shafts in a bilateral symmetry rotating way, a rear friction belt wheel is fixedly arranged at the rear end of the rear friction belt wheel shaft, a rear matching belt wheel matched with the rear friction belt wheel through a belt-toothed friction belt is fixedly arranged at the rear end of the rear matching belt wheel shaft, the front end of the rear friction belt wheel shaft at the left side extends into the front matching cavity, and a rear transmission bevel gear meshed with the power bevel gear is fixedly arranged at the front end of the rear friction belt wheel shaft at the left side, a rear transmission belt wheel fixedly connected to the rear friction belt wheel shaft and matched with the rear transmission matching belt wheel is arranged in the front matching cavity, the front end of the rear matching belt wheel shaft on the right side extends into the friction transmission cavity, and a front transmission matching belt wheel matched with the front transmission belt wheel is fixedly arranged at the front end of the rear matching belt wheel shaft on the right side;
the side friction cavity is symmetrically and rotatably provided with a side belt pulley shaft opposite to the inner wall, side belt pulley wheels are symmetrically and fixedly arranged on the side belt pulley shaft in a left-right mode, the side belt pulley shaft is symmetrically and rotatably arranged opposite to the inner wall in a left-right mode, a side friction belt pulley matched with the side belt pulley through a belt-toothed friction belt is fixedly arranged on the side belt pulley shaft, and the side driving belt pulley is matched with the side belt pulley and the side friction belt pulley;
the power transmission device is characterized by further comprising a turning transmission shaft which is rotatably arranged on the front wall of the friction transmission cavity, a turning transmission belt wheel matched with the front transmission matched belt wheel and the front transmission belt wheel is fixedly arranged on the turning transmission shaft, a turning matched bevel gear is fixedly arranged at the rear end of the turning transmission shaft, a power switching shaft is rotatably arranged on the bottom wall of the friction transmission cavity, a turning bevel gear meshed with the turning matched bevel gear is fixedly arranged at the upper end of the power switching shaft, and the lower end of the power switching shaft extends into the switching cavity and is fixedly provided with a switching power bevel gear.
4. The multifunctional blackboard for stack teaching as claimed in claim 1, wherein: the push-out device comprises a rotary wire shaft arranged on the bottom wall of the switching cavity, a wire wheel is fixedly arranged on the wire shaft, a pull wire is wound on the wire wheel, a wire wheel bevel gear matched with the pawl is fixedly arranged at the upper end of the wire shaft, the wire wheel bevel gear rotates under the action of the pawl, push-out grooves are symmetrically formed in the left and right sides of the bottom wall of the switching cavity, push-out magnets matched with the guide blocks in a sliding mode are arranged in the push-out grooves, the rear end faces of the push-out magnets are fixedly connected with the rear walls of the push-out grooves through push-out springs, and the pull wire is fixedly connected with the rear end faces of the push-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067593.2A CN110757986B (en) | 2019-11-04 | 2019-11-04 | Heap teaching is with multi-functional blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067593.2A CN110757986B (en) | 2019-11-04 | 2019-11-04 | Heap teaching is with multi-functional blackboard |
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| Publication Number | Publication Date |
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| CN110757986A CN110757986A (en) | 2020-02-07 |
| CN110757986B true CN110757986B (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911067593.2A Active CN110757986B (en) | 2019-11-04 | 2019-11-04 | Heap teaching is with multi-functional blackboard |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248688B (en) * | 2020-10-30 | 2022-03-01 | 黄河水利职业技术学院 | Automatic cleaning blackboard |
| CN112396927A (en) * | 2020-11-23 | 2021-02-23 | 日照职业技术学院 | Economics is with having economic change curve display device who rotates show structure |
| CN113147229B (en) * | 2021-05-12 | 2022-09-09 | 湖南科技大学 | Blackboard capable of switching display for teaching |
| CN114312110B (en) * | 2022-01-26 | 2023-09-08 | 重庆信鑫物联网技术有限公司 | Multi-functional blackboard is used in stacked teaching |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201317203Y (en) * | 2008-11-25 | 2009-09-30 | 刘泉 | Circulation-type cleaning-free blackboard |
| CN202332076U (en) * | 2011-11-16 | 2012-07-11 | 马适广 | Device for replacing board of reverse turning board |
| CN104191869B (en) * | 2014-08-04 | 2016-06-29 | 华南理工大学 | A kind of Hanging type multi-functional blackboard |
| KR20160104345A (en) * | 2015-02-26 | 2016-09-05 | 팅언 테크놀로지 컴퍼니 리미티드 | Push-and-pull blackboard |
| CN206462728U (en) * | 2016-11-08 | 2017-09-05 | 马适广 | Folding device for replacing board of reverse turning board |
| CN207842452U (en) * | 2017-07-28 | 2018-09-11 | 马菁 | A kind of blackboard with dust collection function |
| CN109572281A (en) * | 2019-01-22 | 2019-04-05 | 成都理工大学工程技术学院 | A kind of manual floatable chalk cleaning blackboard |
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