CN110154591B

CN110154591B - Teaching equipment

Info

Publication number: CN110154591B
Application number: CN201810015178.1A
Authority: CN
Inventors: 李昱洁; 夏培准
Original assignee: Weihai Ocean Vocational College
Current assignee: Weihai Ocean Vocational College
Priority date: 2018-01-08
Filing date: 2018-01-08
Publication date: 2021-06-29
Anticipated expiration: 2038-01-08
Also published as: CN110154591A

Abstract

The teaching equipment comprises a base, a supporting frame and a driving device, wherein the base can be supported on the ground in a rolling manner, an upright post is arranged on the base, and a sliding rail extending along the vertical direction is arranged on the upright post; the blackboard is arranged on the slide rail; the rod barrel of the first electric push rod is hinged to the base, the extending end of the telescopic rod is hinged to the blackboard, and the telescopic rod stretches and retracts to drive the blackboard to slide along the sliding rail, so that the blackboard is lifted, and the height of the blackboard is adjusted; the teacher desk can be arranged on the base in an extending or accommodating way; wherein, the base includes left socle, right branch frame, fixed plate, returning face plate and upset motor, and the returning face plate is located the front side of fixed plate uses with the fixed plate cooperation, and the both ends of this returning face plate rotationally support respectively in on left socle and the right branch frame. The teaching equipment occupies small area, and is convenient for students to walk and clean classrooms sanitarily. In addition, the height of the blackboard of the teaching equipment is adjustable, the teaching equipment can adapt to the users with different heights to use, and the use experience of the users is greatly improved.

Description

Teaching equipment

Technical Field

The invention relates to the technical field of teaching equipment and multimedia equipment, in particular to teaching equipment.

Background

In an existing classroom, a blackboard is generally fixed on a wall in front of the classroom, a T-shaped platform is built or built at the center of the front side of the classroom, a teacher desk is placed on a protruding part of the platform, and a teacher writes on the blackboard and gives lessons standing in front of the teacher desk. T font platform for the design in classroom is irregular, has occupied great classroom area, makes the classroom front side corridor narrow and small, and is unfavorable for the health in classroom to clean. When the student goes out of class, the student rushes outwards together, which is inconvenient and easy to bump into the teacher's desk.

In addition, the height of the existing blackboard cannot be adjusted, which is very inconvenient for the girl teacher with a short height, and sometimes the user needs to stand on tiptoe to write on the blackboard.

Disclosure of Invention

In view of the above, the present invention provides a teaching device, which is convenient for students to walk and clean classroom, and can be adapted to lecturers with different heights, so as to greatly improve the use experience of the lecturers, and solve the problems in the prior art.

According to the present invention there is provided a teaching apparatus comprising:

the base can be supported on the ground in a rolling manner, an upright post is arranged on the base, and a slide rail extending along the vertical direction is arranged on the upright post;

the blackboard is arranged on the sliding rail;

the rod barrel of the first electric push rod is hinged to the base, the extending end of the telescopic rod is hinged to the blackboard, and the telescopic rod stretches and retracts to drive the blackboard to slide along the sliding rail, so that the blackboard is lifted, and the height of the blackboard is adjusted;

the teacher desk can be arranged on the base in an extending or accommodating mode;

wherein the base comprises a left bracket, a right bracket, a fixed plate, a turnover plate and a turnover motor,

the left bracket and the right bracket are arranged in parallel at a certain distance, rollers are respectively arranged on the left bracket and the right bracket, two ends of the fixing plate are respectively fixed on the left bracket and the right bracket,

the turnover plate is arranged on the front side of the fixed plate and is matched with the fixed plate for use, two ends of the turnover plate are respectively and rotatably supported on the left support and the right support, and the turnover motor is fixed on the left support and is in transmission connection with a rotating shaft of the turnover plate, which is supported on the left support.

Preferably, the upright post is inserted into the fixing plate, and the first electric push rod is hinged to the fixing plate.

Preferably, a second electric push rod is arranged on one side, close to the right support, of the fixed plate, the rod cylinder end of the second electric push rod is hinged to the fixed plate, the extending end head of the telescopic rod end is fixed on the outer side wall of the lectern,

the outer side wall is close to the right bracket.

Preferably, the utility model also comprises an adjusting structure for adjusting the height of the lectern, the adjusting structure comprises a track and an adjusting block, the track extends along the front-back direction of the base, the adjusting block is slidably arranged in the track,

the upper part of the adjusting block is provided with a supporting part for supporting the rod barrel of the second electric push rod, the second electric push rod is supported on the supporting part in a way of inclining a certain angle with the horizontal direction,

the electric push rod extends outwards to drive the teacher desk to move to the upper part of the turnover plate, or the electric push rod retracts inwards to drive the teacher desk to be accommodated in the lower part of the blackboard.

Preferably, the adjusting structure further comprises a mounting bracket, an adjusting motor and an adjusting screw rod, the mounting bracket is arranged at the front part of the track, the adjusting motor is arranged on the bracket, the adjusting screw rod is rotatably supported on the mounting bracket, one end of the adjusting screw rod is in transmission connection with the adjusting motor, the adjusting block is arranged at the other end of the adjusting screw rod, and the adjusting motor drives the adjusting screw rod to rotate, so that the adjusting block is driven to move back and forth along the track.

Preferably, the turnover plate is provided with support legs for supporting on the ground when the turnover plate rotates to the horizontal state.

Preferably, the blackboard eraser further comprises an automatic blackboard erasing device, wherein the automatic blackboard erasing device is buckled on the front side board of the blackboard and can move back and forth along the length direction of the blackboard.

Preferably, still including locating the driving motor and the drive lead screw at blackboard top, automatic blackboard erasing device locates on the drive lead screw, driving motor and drive lead screw transmission are connected, the drive lead screw is used for driving automatic blackboard erasing device along the length direction removal of blackboard.

Preferably, the number of the upright posts is two, and the two upright posts are arranged at two ends of the base along the length direction.

Preferably, the lectern is provided at one end of the base along the length direction.

The teaching equipment provided by the invention can be unfolded when giving lessons and folded when not giving lessons, has small floor area, and is convenient for students to walk and clean classrooms hygienically. In addition, a special T-shaped platform is not required to be built or built. In addition, the height of the blackboard of the teaching equipment is adjustable, the teaching equipment can adapt to the users with different heights to use, and the use experience of the users is greatly improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1-2 show schematic perspective views from different perspectives of a multimedia device according to an embodiment of the invention in an instructional mode.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4-5 show perspective views of an adjustment block according to an embodiment of the invention from different perspectives.

Fig. 6-7 show perspective views of another alternative embodiment of an adjustment block from different perspectives.

Fig. 8-9 show perspective views of a teaching apparatus according to an embodiment of the present invention in a class break mode from different perspectives.

Fig. 10 is a schematic perspective view illustrating an automatic blackboard erasing apparatus according to an embodiment of the present invention.

Fig. 11 shows a split type structural schematic diagram of an automatic blackboard erasing apparatus according to an embodiment of the present invention.

Fig. 12 is a perspective view schematically illustrating a housing of an automatic blackboard erasing apparatus according to an embodiment of the present invention.

Fig. 13 is a perspective view illustrating a roller assembly of an automatic blackboard erasing apparatus according to an embodiment of the present invention.

Fig. 14 is a schematic view showing a divided structure of a roller assembly of an automatic blackboard erasing apparatus according to an embodiment of the present invention.

FIG. 15 illustrates a perspective view of a mounting bracket for a roller assembly according to an embodiment of the present invention.

Fig. 16 is a schematic structural diagram showing a control system of the teaching apparatus according to the embodiment of the present invention.

In the figure: the blackboard eraser comprises a base 1, a left support 11, a right support 12, a fixing plate 13, a turnover plate 14, a blackboard 2, an outer frame 21, a sliding groove 211, a lectern 3, a turnover cover 31, a stand column 51, a rail 61, an adjusting block 62, a supporting part 621, an adjusting handle 622, a screw hole 623, a driving motor 71, a driving screw 72, an adjusting motor 73, an adjusting screw 74, a mounting support 75, an automatic blackboard erasing device 8, an outer cover 81, a roller assembly 82, a mounting frame 821, a top plate 8211, a bottom plate 8212, a partition plate 8213, a rough erasing roller 822, a fine erasing roller 823, a rough erasing motor 824, a fine erasing motor 825, a swing motor 85, a first pressure sensor 86, a second pressure sensor 87, a spray head 88, a sprayer 89, an electric heating wire 891, a pressure pump 892, a turnover motor 92, a first electric push rod 93, a second electric push rod 94, a control.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

Description of the drawings: in this embodiment, the front side of the blackboard refers to the side of the blackboard facing the student when the teaching device is installed in front of the classroom; left and right means that the teaching apparatus is installed in front of a classroom and the left hand side of the lecturer and the student is the left side and the right hand side is the right side when they face the apparatus.

As shown in fig. 1 to 16, the present invention provides a teaching apparatus including a base 1, a blackboard 2, a first electric putter 93, a lectern 3, and a projector 4. The base 1 can be supported on the ground in a rolling way, the base 1 is provided with a vertical column 51, and the vertical column 51 is provided with a slide rail extending along the vertical direction. The blackboard 2 is installed on the slide rail. The rod barrel of the first electric push rod 93 is hinged to the base 1, the extending end of the telescopic rod is hinged to the blackboard 2, and the telescopic rod stretches and retracts to drive the blackboard 2 to slide along the sliding rail, so that the blackboard 2 is lifted, and the height of the blackboard 2 is adjusted. The lectern 3 is disposed on the base 1 in an extending or accommodating manner.

The base 1 comprises a left support 11, a right support 12, a fixing plate 13, a turnover plate 14 and a turnover motor 92, the left support 11 and the right support 12 are arranged in parallel at a certain distance, and rollers are respectively arranged on the left support 11 and the right support 12 and used for moving the whole teaching equipment. Two ends of the fixed plate 13 are respectively fixed on the left bracket 11 and the right bracket 12, and the turnover plate 14 is arranged on the front side of the fixed plate 13 and is matched with the fixed plate 13 for use. The two ends of the turning plate 14 are respectively and rotatably supported on the left bracket 11 and the right bracket 12, and the turning motor 92 is fixed on the left bracket 11 and is in transmission connection with the rotating shaft of the turning plate 14 supported on the left bracket 11. Specifically, two ends of the turning plate 14 in the horizontal direction are respectively provided with a rotating shaft, and the two rotating shafts are respectively inserted into and rotatably supported on the left bracket 11 and the right bracket 12. In this embodiment, the number of the upright posts 51 is also two, the two upright posts 51 are respectively arranged near the left bracket 11 and the right bracket 12 and respectively supported on two sides of the blackboard 2 frame along the length direction, and the two upright posts 51 are inserted into the fixing plate. The number of the first electric push rods 93 is two, and the two first electric push rods 93 are arranged between the two upright posts.

A second electric push rod 94 is arranged on one side of the fixed plate 13, which is close to the right support 12, the rod tube end of the second electric push rod 94 is hinged to the fixed plate 13, and the extending end of the telescopic rod end is fixed on the outer wall of the lectern 3.

In this embodiment, the flipping motor 92 is selected to be a stepping motor or a servo motor, which enables precise flipping of the flipping panel 14. The turnover plate 14 can be turned over by 0-90 degrees, and the turnover plate 14 is turned over to be in a vertical state or a horizontal state. When the turnover plate 14 is turned to a horizontal state, the turnover plate 14 is spliced with the fixed plate 13 to form an integral platform structure for the lecturer to move. In this embodiment, the front and rear width of the fixed plate 13 is 700mm, the width of the turnover plate 14 is 700mm and 1100mm, specifically 800mm, and the front and rear width of the fixed plate 13 and the movable plate can reach 1500mm or even wider, so as to provide a moving range for the lecturer. When the multimedia device is not in use, the turnover plate 14 can be turned up to be horizontal, thereby saving the occupied space.

Further, the teaching equipment further comprises an adjusting structure for adjusting the height of the lectern 3, wherein the adjusting structure comprises a track 61 and an adjusting block 62, and the adjusting block 62 is slidably arranged in the track 61. The adjustment structure is located in the lower part of the second area of the blackboard 2 and is located close to the right bracket 12. Wherein the rail 61 is fixed to the fixed plate 13 and extends in the front-rear direction so that the adjusting block 62 can slide in the front-rear direction. The upper portion of the adjusting block 62 is provided with a supporting portion 621 for supporting the rod barrel of the second electric pushing rod 94, the supporting portion 621 is an inclined groove-shaped structure, the groove-shaped structure is matched with the rod barrel of the second electric pushing rod 94, and the inclined direction of the groove-shaped structure is sequentially raised from back to front, so that the second electric pushing rod 94 obliquely extends towards the front. The second electric push rod 94 is supported on the supporting portion 621 inclined at a certain angle with respect to the horizontal direction. The electric push rod extends outwards to drive the lectern 3 to rise towards the front and extend outwards, so that the lectern 3 moves to the upper part of the turnover plate 14, or the electric push rod retracts to drive the lectern 3 to retract and descend towards the rear, so that the lectern 3 is accommodated in the lower part of the blackboard 2. The turning plate 14 is provided with support legs for supporting on the ground when the turning plate 14 rotates to a horizontal state.

Referring to fig. 4 and 5, the adjusting block 622 is provided with a threaded hole 623 therethrough for connection with the adjusting screw 74. The adjusting structure further comprises a mounting bracket 75, an adjusting motor 73 and an adjusting screw 74, wherein the mounting bracket 75 is arranged at the front part of the track 61, the adjusting motor 73 is arranged on the mounting bracket 75, the adjusting screw 74 is rotatably supported on the mounting bracket 75, one end of the adjusting screw 74 is in transmission connection with the adjusting motor 73, the adjusting block 62 is arranged at the other end of the adjusting screw 74, and the adjusting motor 73 drives the adjusting screw 74 to rotate, so that the adjusting block 62 is driven to move back and forth along the track 61. When the height of the lecturer is low, for example, lower than 157cm, or when the height of the lecturer is high, for example, higher than 185cm, the height of the lecture table 3 can be adjusted by adjusting the front and rear positions of the adjusting block 62, so that a comfortable lecture posture can be provided during teaching.

Referring to fig. 6 and 7, in an alternative embodiment, the adjustment block 62 is provided with an adjustment handle 622 on the side facing forward for the adjuster to grasp the position of the forward and rearward movement adjustment block 62.

Further, the teaching apparatus further includes an automatic blackboard erasing device 8, and a driving motor 71 and a driving screw 72 provided on the top of the blackboard 2. The automatic blackboard erasing device 8 is movably arranged on the front side board of the blackboard 2 along the length direction of the blackboard 2. The automatic blackboard erasing device 8 is arranged on the driving screw 72, the driving motor 71 is in transmission connection with the driving screw 72, and the driving screw 72 is used for driving the automatic blackboard erasing device 8 to move along the length direction of the blackboard 2.

The movable blackboard erasing device 8 comprises an outer cover 21, a roller assembly 82 and a swing motor 85, wherein the swing motor 85 is installed on the top wall of the inner side of the outer cover 21, the roller assembly 82 can be rotatably supported on the bottom wall of the inner side of the outer cover 21, and a rotating shaft of the swing motor 85 is in transmission connection with a rotating shaft of the upper portion of the roller assembly 82 to drive the roller assembly 82 to swing integrally.

Specifically, the cover 81 has a cover structure with one side open, and the open side is adapted to face and be engaged with the surface of the blackboard 2. The rear side wall of the outer cover 81 opposite to the opening is in a smooth transition arc surface structure. The outer wall of the bottom of the outer cover 81 is provided with a sliding pin, and the bottom of the lower beam of the outer frame 21 of the blackboard 2 is provided with a sliding groove 211 for the insertion and sliding of the sliding pin. The outer wall of the top of the outer cover 81 is provided with a slide block, the slide block is provided with an inner wire, the slide block is connected to the driving screw 72 through the inner wire and can slide under the driving of the driving screw 72, so that the whole automatic blackboard erasing device 8 is driven to slide along the length direction of the blackboard 2. The automatic blackboard erasing device 8 is located at the right edge of the blackboard 2 in an idle state.

The roller assembly 82 includes a mounting bracket 821, a rough wiping roller 822 and a fine wiping roller 823, and the rough wiping roller 822 and the fine wiping roller 823 are arranged in parallel at a distance from each other and are rotatably mounted on the mounting bracket 821, respectively. The roller assembly 82 further comprises a rough wiping motor 824 and a fine wiping motor 825, the rough wiping motor 824 and the fine wiping motor 825 are respectively arranged on the mounting frame 821, the rough wiping motor 824 is in transmission connection with the rough wiping roller 822 and is used for driving the rough wiping roller 822 to rotate, and the fine wiping motor 825 is in transmission connection with the fine wiping roller 823 and is used for driving the fine wiping roller 823 to rotate.

Specifically, referring to fig. 13, the mounting frame 821 includes a top plate 8211, a bottom plate 8212 and a partition plate 8213, the top plate 8211 and the bottom plate 8212 are arranged in parallel at a certain distance, two ends of the partition plate 8213 are respectively connected to the top plate 8211 and the bottom plate 8212, the partition plate 8213 can be welded to the top plate 8211 and the bottom plate 8212 in a welding manner, the partition plate 8213 divides an inner cavity of the housing into a first cavity and a second cavity, wherein the rough wiping roller is located in the first cavity, and the fine wiping roller is located in the second cavity. In this embodiment, the partition 8213 is vertically welded to the middle portion of the top plate 8211 and the partition 8213, wherein the rough wiping roller 822 and the fine wiping roller 823 are respectively located at both sides of the partition 8213. The rough wipe motor 824 and the fine wipe motor 825 are both mounted on the top plate 8211. In this embodiment, the rough wiping roller 822 is specifically selected to be a brush roller, the fine wiping roller 823 is a roller wrapped with a wiping cloth or a sponge, the wiping cloth or the sponge is detachably wrapped on the fine wiping roller 823, and the fine wiping roller 823 can be specifically adhered by a hook-and-loop fastener and wrapped on the fine wiping roller 823. The rough wiping roller 822 is used for quickly and roughly wiping the blackboard, and the fine wiping roller 823 is used for finely and thoroughly wiping the blackboard to wipe off the remaining traces of chalk on the blackboard. A first pressure sensor 86 and a second pressure sensor 87 (not shown) are provided on the top plate 8211 at the upper portion of the rough wiping roller 822 and the upper portion of the fine wiping roller 823, respectively, and both of the pressure sensors are contact squeeze sensors and protrude in the direction toward the opening side of the housing 81, respectively. Wherein, the first pressure sensor 86 is used for judging whether the rough wiping roller 822 contacts and presses the blackboard 2, the second pressure sensor 87 is used for judging whether the fine wiping roller 823 contacts and presses the blackboard 2, and transmits the pressure signal to the control device 1000, and the control system judges whether the roller assembly 82 swings in place, thereby sending the control signal of stopping or continuing to rotate to the swing motor 85.

Further, the width of the partition 8213 is substantially the same as the depth of the housing 81, so that one end of the partition 8213 away from the opening side of the housing 81 can be in sliding contact with the arc-shaped inner side surface of the housing 81. Specifically, a sealing brush or a sealing rubber sheet may be disposed on an end surface of the partition 8213, which is away from the opening side of the outer cover 81, so as to divide the inner cavity of the outer cover 81 into two chambers with variable volumes, and the rough wiping roller 822 and the fine wiping roller 823 are disposed in the two chambers, respectively. When the automatic blackboard erasing apparatus 8 is buckled on the board surface of the blackboard 2, the rough erasing roller 822 is close to the left side, and the fine erasing roller is close to the right side.

In this embodiment, the rough wiping motor 824 and the fine wiping motor 825 are both selected to be motors with reduction boxes, i.e., motor-reduction box integrated motors, so as to reduce the installation space.

Further, the automatic blackboard erasing apparatus 8 further includes a spraying system including a plurality of nozzles 88 and a sprayer 89, the sprayer 89 being in communication with the plurality of nozzles 88, respectively. The atomizer 89 is mounted on the outer wall of the housing 81, and a mounting plate for mounting the shower head 88 is provided on the side of the partition 8213 facing the rough wiping roller 822. The atomizer 89 has a pressurizing pump 892 for performing a pressurizing function, and the atomizer 89 is used for containing the spray liquid, and a heating wire for rapidly heating the spray liquid is provided in the atomizer 89. The spray liquid can be water or the mixed liquid of water and additive. The pressurizing pump 892 heats and pressurizes the spray liquid and then sprays the spray liquid to form hot mist water which covers the blackboard surface and simultaneously fills the whole first chamber, so that on one hand, the chalk traces on the blackboard are heated and wetted before being wiped, and on the other hand, the dust generated in the wiping process and collected in the outer cover is heated and humidified to prevent the dust from being scattered into the outside air.

Referring to fig. 16, the control system of the teaching apparatus includes a control device 1000, a remote controller 2000, a first pressure sensor 86, a second pressure sensor 87, a driving motor 71, a rough wiping motor 824, a fine wiping motor 825, a first turning motor 91, a turning motor 92, a heating wire 891, a pressurizing pump 892, a swing motor 85, a first electric push rod 93, a second electric push rod 94, and a pitching adjustment motor 95. The first pressure sensor 86 and the second pressure sensor 87 are respectively electrically connected with the control device 1000, the remote controller 2000 is in communication connection with the control device 1000, the first pressure sensor 86 and the second pressure sensor 87 are used for collecting pressure signals and transmitting the pressure signals to the control device 1000, the remote controller 2000 transmits instructions to the control device 1000, and the control device 1000 outputs the pressure signals after comprehensive judgment and analysis. The driving motor 71, the rough wiping motor 824, the fine wiping motor 825, the turnover motor 92, the heating wire 891, the pressure pump 892, the swing motor 85, the first electric push rod 93 and the second electric push rod 94 are electrically connected to the control device 1000 respectively, and are configured to receive instructions from the control device 1000 and perform corresponding actions.

The remote controller 2000 has a plurality of control keys including a teaching mode key, a lesson rest mode key, a fine erasing mode key, a rough erasing mode key, a mixed erasing mode key, a blackboard height adjusting key, and the like.

When the multimedia device is used, the multimedia device only needs to be placed on a flat ground in front of a classroom. When teaching is performed, a teaching mode of the remote controller 2000 is selected, then the control device 1000 receives a control command, controls the turnover motor 92 to drive the turnover plate 14 to turn outwards to be in a horizontal state and to be supported on the ground, the fixed plate 13 and the turnover plate 14 form an integral platform structure, and then the second electric push rod 94 pushes the platform to face the front, namely, the direction of a student inclines upwards and extends outwards.

When the teaching is completed, the rest mode of the remote controller 2000 is selected, the control device 1000 controls the second electric push rod 94 to drive the lecture table 3 to be folded between the upper part of the fixed plate 13 and the bottom of the blackboard 2, and then the turnover motor 92 drives the turnover plate 14 to be folded upwards to wrap the lecture table 3. Because the turnover plate 14 is retracted, the floor space of the teaching equipment is greatly reduced, and a channel for students to walk is formed between the front desk in the classroom in front of the multimedia equipment and the multimedia equipment. The multimedia equipment in the class rest mode occupies a very small area. Place lectern 3 on the podium of traditional T font relatively and compare, do not have outstanding podium of laying bricks on ground for the space in whole classroom is regular, and the student of being convenient for walks, has also avoided the student because the classroom front side space is narrow and small and collide the podium 3 on, also makes things convenient for the classroom health to clean simultaneously.

When the blackboard 2 is used up and the blackboard 2 needs to be erased, one of the fine erasing mode key, the rough erasing mode key and the mixed erasing mode key of the remote controller 2000 can be selectively pressed to erase the blackboard 2 as required. At ordinary times, only the rough erasing mode key needs to be selected to roughly erase the blackboard 2, at this time, the controller controls the swing motor 85 to drive the roller assembly 82 to rotate, the rough erasing roller 822 of the roller assembly 82 is rotated to the board surface of the blackboard 2 and extrudes the board surface of the blackboard 2 to a preset pressure, the first pressure sensor 86 transmits a pressure signal to the control device 1000, and the control device 1000 controls the swing motor 85 to rotate continuously for a preset angle and then stop rotating and lock the motor rotating shaft. Then, the drive motor 71 is started to drive the drive screw 72 to rotate, thereby moving the automatic blackboard erasing apparatus 8 in the longitudinal direction of the blackboard 2 to erase the blackboard 2. When the blackboard 2 is used for too long time and the residual chalk powder on the blackboard is too much to make the board blurred, the blackboard 2 can be finely erased by adopting a fine erasing mode. At this time, the control device 1000 sends a fine erasing command, the swing motor 85 first drives the fine erasing roller 823 to rotate and press the blackboard surface 2 to a preset pressure, the second pressure sensor 87 transmits a pressure signal to the control device 1000, and the control device 1000 controls the swing motor 85 to rotate continuously by a preset angle and then stop rotating and lock the motor rotating shaft. Meanwhile, the heater is started to preheat for a preset time period, for example, 6 to 30 seconds, then the powder on the blackboard 2 is quickly heated and humidified by pressurizing the blackboard through the pressurizer and the pump and is sprayed to the surface of the blackboard 2 through the plurality of nozzles 88, then the driving motor 71 is started to drive the driving screw 72 to rotate, the driving screw 72 drives the automatic blackboard erasing device 8 to move along the length direction of the blackboard 2, the powder is erased while the powder is heated and humidified, and the residual powder distribution marks on the surface of the blackboard 2 are erased. Because the blackboard 2 is heated and humidified in the wiping process, the flying of chalk powder in the wiping process of the blackboard 2 is avoided, and the cleaning effect is realized. Meanwhile, the blackboard 2 is prevented from being unclear due to long-time use and ghost phenomena occur during re-writing due to fine wiping, the using effect of the blackboard 2 is enhanced, and the user experience of the blackboard 2 is greatly improved.

Of course, the mixed erasing mode can be selected as desired, while the coarse erasing and fine erasing processes for the blackboard 2 are realized. At this time, the fine erasing roller 823 and the rough erasing motor 824 are pressed on the board surface of the blackboard 2 at the same time, and specific reference may be made to the principle and process of the fine erasing and rough erasing modes, which will not be described herein again.

When the height of the lecturer is low, for example, lower than 157cm, or the height of the lecturer is high, for example, higher than 185cm, the height adjusting key of the blackboard 2 of the remote controller 2000 can be selected, and the height of the blackboard 2 can be adjusted to a proper height by turning up or turning down the height adjusting key of the blackboard 2, so that the lecturer can write on the blackboard 2 conveniently.

The teaching equipment in this application can expand when giving lessons, packs up when not giving lessons, and area is little, and the sanitary cleaning in student's walking and classroom of being convenient for to, need not to build or build special T font podium by laying bricks or stones. In addition, the height of the blackboard 2 of the teaching device is adjustable, the teaching device can adapt to the use of the teaching persons with different heights, and the use experience of the teaching persons is greatly improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims

1. An instructional apparatus, comprising:

the blackboard is arranged on the sliding rail;

the turnover plate is arranged on the front side of the fixed plate and is matched with the fixed plate for use, two ends of the turnover plate are respectively and rotatably supported on the left bracket and the right bracket, and the turnover motor is fixed on the left bracket and is in transmission connection with a rotating shaft of the turnover plate, which is supported on the left bracket;

a second electric push rod is arranged on one side, close to the right support, of the fixed plate, the rod cylinder end of the second electric push rod is hinged to the fixed plate, the extending end of the telescopic rod end is fixed to the outer side wall of the lectern, and the outer side wall is close to the right support;

the teaching equipment also comprises an adjusting structure for adjusting the height of the teacher desk, the adjusting structure comprises a track and an adjusting block, the track extends along the front-back direction of the base, the adjusting block is slidably arranged in the track,

2. The teaching device as claimed in claim 1, wherein the upright is inserted into the fixing plate, and the first electric push rod is hinged to the fixing plate.

3. The teaching device as claimed in claim 1, wherein the adjusting structure further comprises a mounting bracket, an adjusting motor and an adjusting screw, the mounting bracket is disposed at the front of the track, the adjusting motor is mounted on the bracket, the adjusting screw is rotatably supported on the mounting bracket, one end of the adjusting screw is in transmission connection with the adjusting motor, the adjusting block is disposed at the other end of the adjusting screw, and the adjusting motor drives the adjusting screw to rotate, so as to drive the adjusting block to move back and forth along the track.

4. The teaching device as claimed in claim 1, wherein the turning plate is provided with legs for supporting on the ground when the turning plate is rotated to a horizontal state.

5. The teaching device according to claim 1, further comprising an automatic blackboard erasing device, wherein the automatic blackboard erasing device is fastened to the front side board of the blackboard and can move back and forth along the length direction of the blackboard.

6. The teaching equipment as claimed in claim 5, further comprising a driving motor and a driving screw rod which are arranged on the top of the blackboard, wherein the automatic blackboard erasing device is arranged on the driving screw rod, the driving motor is in transmission connection with the driving screw rod, and the driving screw rod is used for driving the automatic blackboard erasing device to move along the length direction of the blackboard.

7. Teaching equipment as claimed in any of claims 1-6, wherein the number of the upright columns is two, and two upright columns are provided at both ends of the base along the length direction.

8. Instructional device according to anyone of the claims 1 to 6, wherein the lectern is provided at one end of the base in the length direction.