CN212124679U - Automatically cleaning blackboard based on singlechip - Google Patents

Abstract

The utility model discloses an automatically cleaning blackboard based on singlechip, include: the single chip microcomputer is a control system of the self-cleaning blackboard; the blackboard comprises a plate frame and a support frame, wherein the plate frame is used for supporting a blackboard and realizing blackboard switching; the blackboard assembly is connected with the singlechip control signal and comprises a plurality of blackboards and a transmission device, wherein the blackboards are arranged in the plate frame and can move front and back and left and right on the plate frame; the cleaning dust collecting assembly is connected with the single chip microcomputer control signal and used for automatically cleaning the blackboard and automatically collecting dust, and the cleaning dust collecting assembly is linked with the blackboard assembly or acts independently; the cleaning dust collecting component is arranged in a plate frame rail groove between the front group of blackboards and the rear group of blackboards in parallel to the blackboards and moves left and right along the rail groove. This automatically cleaning blackboard based on singlechip has realized that the automation of blackboard is cleaned and automatic collection deposits the ash, and the blackboard position is portable to be switched over, has increased the quantity of blackboard, can remain or wipe the blackboard-writing content on the blackboard as required.

Description

Automatically cleaning blackboard based on singlechip

Technical Field

The utility model belongs to the technical field of the blackboard technique and specifically relates to a automatically cleaning blackboard based on singlechip is related to.

Background

The blackboard is one of the necessary teaching tools, and its kind is various, and it is written with the china ink pen, also has the chalk, but the blackboard for teaching that often uses still writes with the chalk, whitewashes and wipes. The blackboard for teaching is large in area and convenient to use, but has the biggest defects of large dust in the wiping process, easy blur caused by repeated wiping of the blackboard, increased workload of teachers by wiping the blackboard and occupation of teaching time.

Chinese patent document (announcement date: 10/1/2014, and announcement number: CN 104070892A) discloses an intelligent rotary triangular prism blackboard based on electronic control, wherein the blackboard surface consists of parallel triangular prisms and is driven by a stepping motor to realize automatic overturning, the top end of a rotating rod of a cleaning rod is connected with a direct current motor, the direct current motor is connected with a ball screw through a motor supporting plate to realize front and back movement, the end part of the ball screw is connected with a speed reducing motor, the direct current motor and the stepping motor are respectively connected with a single chip microcomputer controller, the single chip microcomputer controller is placed in a control box, and the single chip microcomputer controller is further connected with a cleaning starting button and an overturning starting button.

The technical scheme provides the rotary triangular prism intelligent blackboard controlled by the single-chip microcomputer controller, which overcomes the defects of inflexibility, small board surface and time waste caused by cleaning the blackboard in the course of class of the traditional integrated blackboard; shielding between the blackboard and the projector, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at that the teaching that writes, whitewashes and clean to chalk commonly used is with blackboard existence and cleans the in-process dust big, cleans the blackboard repeatedly and easily changes the fuzzy, simultaneously, cleans the blackboard and has increased teacher's work load, occupies teaching time scheduling problem, and provides one kind based on singlechip technique can clean automatically, deposit the ash and do not have the dust, mobilizable automatically cleaning blackboard based on the singlechip.

The utility model discloses the technical scheme who realizes its invention purpose adopts is: a self-cleaning blackboard based on a single chip microcomputer comprises:

the single chip microcomputer is a control system of the self-cleaning blackboard;

the blackboard comprises a plate frame and a support frame, wherein the plate frame is used for supporting a blackboard and realizing blackboard switching;

the blackboard assembly is in signal connection with the singlechip and comprises two groups of blackboards and transmission devices, wherein the two groups of blackboards are arranged in the plate frame, can move around the plate frame and are arranged in parallel;

the cleaning dust collecting assembly is connected with a single chip microcomputer control signal and used for automatically cleaning the blackboard and automatically collecting dust, and the cleaning dust collecting assembly is linked with the blackboard assembly or acts independently; the cleaning dust collecting component is arranged in a plate frame rail groove between the front group of blackboards and the rear group of blackboards in parallel to the blackboards and moves left and right along the rail groove.

The utility model discloses come in citing the blackboard with the singlechip technique, come control polylith blackboard through the singlechip and control the back-and-forth movement about track frame inslot portion, thereby realize the switching of position each other, and simultaneously, it is clean to the blackboard that needs to wipe when realizing blackboard position switching to collect grey subassembly through single chip microcomputer control, perhaps accomplish alone and clean the blackboard that needs to wipe, do not need the manual blackboard of user to wipe, this automatically cleaning blackboard based on the singlechip, the automation that has realized the blackboard is cleaned and the automatic collection deposits grey, and is dustless, the blackboard position is portable, can remain or wipe the blackboard-writing content on the blackboard as required. Because the automatic wiping and the collection of the powder ash are realized, the powder ash can not be generated when in use, and the body health of teachers and students is facilitated; moreover, the number of the blackboards is increased, and the blackboards are arranged front, back, left and right, so that the use area is greatly increased compared with the existing blackboard-writing blackboards, and the blackboard-writing blackboard is more beneficial for teachers to keep blackboard-writing; the blackboard eraser has the advantages that the blackboard eraser is automatically cleaned, the time for a teacher to clean the blackboard is effectively saved, key blackboard books can be written on the same blackboard through switching, the key blackboard books are not cleaned, and the blackboard eraser can be directly transferred to the blackboard for reviewing and summarizing when the class tail is small in time. Compared with the traditional blackboard, the self-cleaning blackboard based on the single chip microcomputer is simple in structure, does not increase more cost, and is more suitable for popularization and application of schools.

Preferably, the plate frame is of a frame structure, the upper part and the lower part of the plate frame are respectively provided with a track frame groove, and the track frame grooves are parallelly provided with three rows of track frame grooves in the front, middle and rear directions along the direction perpendicular to the blackboard surface.

Preferably, the track frame groove comprises a front track frame groove, a middle track frame groove and a rear track frame groove which are arranged in parallel along the direction vertical to the wall surface; the joints of the front track frame groove and the middle track frame groove and the joints of the rear track frame groove and the middle track frame groove are provided with moving gaps, so that a moving channel is formed when the blackboard moves forward and backward. The setting is at the sheet frame and at the inside front rail frame groove that is provided with of sheet frame, well track frame groove and back track frame groove, it is this setting that has made things convenient for transmission and then drive the blackboard and carry out the side-to-side movement all around to the setting of clean collection ash subassembly will be cleaned, will clean collection ash subassembly setting and can follow well track frame inslot and remove about, thereby when realizing the normal blackboard writing of front bank blackboard, the blackboard writing on the back bank blackboard is wiped automatically, can reach the automatic wiping, the while still can not appear flying upward scheduling problem of dust.

Preferably, the transmission device comprises a transmission motor and moving blocks connected with the transmission motor, each blackboard is driven by a group of moving blocks to move left and right back and forth, and the moving blocks firstly rotate in the direction when moving back and forth.

Preferably, the transmission device comprises a belt transmission device for realizing left-right movement transposition of the blackboard and a screw rod transmission device for realizing front-back movement transposition of the blackboard. Because the positions of the blackboards need to be switched, the belt transmission device and the screw rod transmission device are arranged, so that the left and right movement and the front and back movement are realized, and the belt transmission device and the screw rod transmission device are independent and can move in a matched manner, so that the blackboard is convenient to set, simple in structure and more convenient to operate.

Preferably, the belt transmission devices are provided with a front group and a rear group, each group of belt transmission devices respectively comprises a belt transmission motor, an active transmission belt and a passive transmission belt, the passive transmission belts are movably arranged on the active transmission belts, the blackboard is arranged on the passive transmission belts, and the passive transmission belts rotate when the passive transmission belts move back and forth. The belt transmission devices are respectively arranged in the front track frame groove and the rear track frame groove and are used for realizing the left-right movement of the front row of blackboards and the rear row of blackboards and the switching of the front position and the rear position, and the passive transmission belt is driven to move through the active transmission belt, so that the left-right movement is realized.

Preferably, the screw rod transmission device is in double-screw rod transmission, the screw rod transmission device is provided with a left group and a right group, and each group of screw rod transmission device is respectively provided with two pairs of double-screw rod components. The screw rod transmission device adopts double screw rod transmission, one screw rod is used for realizing butt joint with the passive transmission belt, so that the other screw rod can drive the passive transmission belt to move back and forth between the front track frame groove and the rear track frame groove, and the front and rear switching of the blackboard is realized.

Preferably, the double-screw assembly comprises screw rods, a screw rod motor and screw rod nuts, each screw rod is driven by the screw rod motor to rotate positively and negatively, the double screw rods are arranged up and down, the upper screw rod and the lower screw rod are respectively in threaded connection with the screw rod nuts, and the screw rod nuts on the upper screw rod and the lower screw rod are fixedly connected into a whole.

Preferably, the cleaning and dust collecting assembly comprises a cleaning motor, a transmission screw rod, a cleaning and brushing main body and a cleaning and collecting device; the transmission screw rod is connected with the cleaning motor and is driven by the cleaning motor to rotate; the cleaning and brushing main body is connected with the transmission screw rod through a moving block in threaded connection with the transmission screw rod and is driven by the transmission screw rod to rotate forward or retreat to achieve wiping movement, and the cleaning and collecting device is arranged below the cleaning and brushing main body and is communicated with the inside of the cleaning and brushing main body. The cleaning brush main body is driven by the cleaning motor to move along the transmission screw rod, so that the blackboard is cleaned.

Preferably, the cleaning main body comprises a painting strip and a painting arranged on the painting strip, the painting strip is of a hollow structure and is provided with a cavity, the painting is uniformly distributed on one side, facing the blackboard surface, of the painting strip, and dust suction holes communicated with the cavity are formed in the painting strip on the inner side of the painting strip. The cleaning main body mainly comprises a brushing strip, the brushing strip is provided with a brush for wiping the content of the blackboard writing, and a cavity is formed in the brushing strip so that dust can be automatically sucked into the cavity through the dust suction hole to be collected in the wiping process, so that the dust is prevented from flying, and the cleaning machine is environment-friendly and sanitary.

Preferably, the cleaning and collecting device comprises a powder collecting box and a suction fan arranged in the powder collecting box, wherein the powder collecting box is provided with an air inlet and an air outlet, the suction fan is arranged at the air inlet, and the air outlet is provided with a filter screen; the powder collecting box is also provided with a transparent observation window. The suction fan is started to suck dust into the cavity through the dust suction hole and finally collect the dust into the interior of the dust collecting box.

The utility model has the advantages that: this automatically cleaning blackboard based on singlechip has realized that the automatic of blackboard is cleaned and automatic collection deposits the ash, and no dust increases the effective usable floor area of blackboard, and the blackboard position is portable, can remain or wipe the blackboard writing content on the blackboard as required. Because the automatic wiping and the collection of the powder ash are realized, the powder ash can not be generated when in use, and the body health of teachers and students is facilitated; moreover, the number of the blackboards is increased, and the blackboards are arranged front, back, left and right, so that the use area is greatly increased compared with the existing blackboard-writing blackboards, and the blackboard-writing blackboard is more beneficial for teachers to keep blackboard-writing; the blackboard eraser has the advantages that the blackboard eraser is automatically cleaned, the time for a teacher to clean the blackboard is effectively saved, key blackboard books can be written on the same blackboard through switching, the key blackboard books are not cleaned, and the blackboard eraser can be directly transferred to the blackboard for reviewing and summarizing when the class tail is small in time. Compared with the traditional blackboard, the self-cleaning blackboard based on the single chip microcomputer is simple in structure, does not increase more cost, and is more suitable for popularization and application of schools.

Drawings

FIG. 1 is a schematic structural view of the self-cleaning blackboard based on a single-chip microcomputer;

2a, 2b, 2c, 2d are schematic diagrams of a switching process from a static state to a switching completion state of the blackboard according to the present invention;

FIGS. 2e and 2f are schematic diagrams showing a moving state of the cleaning dust collecting assembly according to the present invention;

FIG. 3a is a schematic view of a cleaning dust collecting assembly according to the present invention;

FIG. 3b is a schematic view of a cleaning body according to the present invention;

fig. 3c is a cut-away view of the cleaning collection device of the present invention;

FIG. 4 is another schematic structural diagram of the self-cleaning blackboard based on the single chip microcomputer of the present invention;

FIG. 5 is a top view of the lower frame portion of FIG. 4;

FIG. 6 is a top plan view of the upper frame portion of FIG. 4;

FIG. 7 is a schematic view of the transmission and the plate frame of the SCM-based self-cleaning blackboard in FIG. 4;

FIG. 8 is a schematic view of an exploded structure of the blackboard assembly of the present invention;

figure 9 is a control block diagram of the embodiment of figure 4 of the present invention;

figure 10 is a control circuit diagram of the embodiment of figure 4 of the present invention;

in the figure: 1. a single chip microcomputer, 2, a plate frame, 201, a front track frame groove, 202, a middle track frame groove, 203, a rear track frame groove, 204, a moving gap, 205, a moving channel, 3, a blackboard component, 4, a blackboard, 401, a first blackboard, 402, a second blackboard, 403, a third blackboard, 5, a transmission device, 6, a cleaning dust collecting component, 601, a cleaning motor, 602, a transmission screw rod, 603, a cleaning main body, 604, a cleaning collecting device, 605, a moving block, 606, a brushing strip, 607, a brush, 608, a cavity, 609, a dust sucking hole, 610, a dust collecting box, 611, a suction fan, 612, an air inlet, 613, an air outlet, 614, a filter screen, 615, a transparent observation window, 616, 7, a belt transmission device, 701, a belt transmission motor, 702, a driving transmission belt, 703, a driven transmission belt, 8, a screw rod transmission device, 801, a screw rod, 802, a motor, 803 and a screw rod nut, 9. the blackboard comprises a transmission motor 10, a first blackboard moving block 11, a second blackboard moving block 12, a third blackboard moving block 13, a first front groove zone 14, a second front groove zone 15, a third rear groove zone 16 and a fourth rear groove zone;

the automatic positioning device comprises screw rods 17, 18, 19, 20, 21, 22, 23 and 24, motors 29, 30, 31, 32, 33, 34, 35 and 36, a front belt transmission motor 46, a rear belt transmission motor 45, a lower frame rear rail groove 25, a lower frame middle rail groove 26, lower frame front rail grooves 27 and 28 which are object placing areas, nuts 37, 38, 39, 40, 41, 42, 43 and 44, a limit switch 60 and a position sensor 61.

Detailed Description

The technical solution of the present invention will be further described in detail by the following specific embodiments with reference to the accompanying drawings.

Example 1:

in the embodiment shown in fig. 1, a self-cleaning blackboard based on a single chip microcomputer comprises:

the single chip microcomputer 1 is a control system of the self-cleaning blackboard;

the blackboard comprises a board frame 2 and a blackboard switching mechanism, wherein the board frame 2 is a frame for supporting a blackboard and realizing blackboard switching, and a track frame groove is formed in the board frame 2;

the blackboard assembly 3 is connected with the singlechip 1 through control signals, and the blackboard assembly 3 comprises two groups of blackboards 4 and a transmission device 5 which are arranged in the plate frame 2, can move around the plate frame 2 and are arranged in parallel;

the cleaning dust collecting assembly 6 is connected with a control signal of the singlechip 1 and is used for automatically cleaning the blackboard 4 and automatically collecting dust, and the cleaning dust collecting assembly 6 and the blackboard assembly 3 act in a linkage or independently; the cleaning dust collecting assembly 6 is arranged in a plate frame rail groove between the front group of blackboards and the rear group of blackboards in parallel to the blackboards and moves left and right along the rail groove.

The plate frame 2 is of a frame structure, the plate frame 2 is provided with track frame grooves from top to bottom, and the track frame grooves are provided with three rows of track frame grooves in front, middle and back in parallel along the direction perpendicular to the blackboard surface. The track frame groove comprises a front track frame groove 201, a middle track frame groove 202 and a rear track frame groove 203 which are arranged in parallel along the direction vertical to the wall surface; the joints of the front track frame groove 201 and the middle track frame groove 202 and the rear track frame groove 203 are provided with moving gaps 204, and a moving channel 205 is formed when the blackboard moves forwards and backwards.

The transmission device 5 comprises a transmission motor and moving blocks connected with the transmission motor, each blackboard is driven by a group of moving blocks to move left and right back and forth, and the moving blocks firstly rotate in the direction when moving back and forth. The transmission device 5 can be a transmission device comprising a transmission motor, a universal wheel (not marked in the figure) connected with the transmission motor and moving blocks connected with the universal wheel, each moving block is provided with the universal wheel with the transmission motor, the rotation of the universal wheel is controlled through the transmission motor so as to drive the movement of the blackboard, each blackboard is driven by a group of moving blocks to move left and right and move back and forth, and the moving blocks perform rotary motion in the front and back directions.

As shown in fig. 3a, the cleaning dust collecting assembly 6 includes a cleaning motor 601, a transmission screw 602, a cleaning brush body 603, and a cleaning collecting device 604; the transmission screw 602 is connected with the cleaning motor 601 and is driven by the cleaning motor 601 to rotate; the cleaning main body 603 is connected with the transmission screw rod 602 through a moving block 605 screwed with the transmission screw rod 602 and is driven by the transmission screw rod 602 to rotate forward or backward to realize wiping movement, and the cleaning collection device 604 is arranged below the cleaning main body 603 and is communicated with the inside of the cleaning main body 603.

As shown in fig. 3b, the cleaning main body 603 includes a brush strip 606 and a brush 607 disposed on the brush strip, the brush strip 606 is hollow and has a cavity 608, the brush 607 is uniformly disposed on one side of the brush strip 606 facing the blackboard surface, and the brush 607 has a dust suction hole 609 communicating with the cavity 608.

As shown in fig. 3c, the cleaning and collecting device 604 includes a powder collecting box 610 and a suction fan 611 disposed inside the powder collecting box, the powder collecting box 610 is provided with an air inlet 612 and an air outlet 613, the suction fan 611 is disposed at the air inlet 612, and the air outlet 613 is provided with a filter 614; the powder collecting box 610 is also provided with a transparent observation window 615.

In this embodiment, the self-cleaning blackboard based on the single chip microcomputer sets three blackboards, including a first blackboard 401, a second blackboard 402, and a third blackboard 403, the transmission device 5 includes a transmission motor 9 and a moving block for driving the blackboards to move, and the moving block includes a first blackboard moving block 10 for driving the first blackboard to move, a second blackboard moving block 11 for driving the second blackboard to move, and a third blackboard moving block 12 for driving the third blackboard to move.

As shown in fig. 2a, 2b, 2c and 2d, when the blackboard eraser is used, after a teacher is full of the first blackboard 401 or full of the first blackboard 401 and the second blackboard 402, if the content of the first blackboard 401 is kept and the first blackboard 401 is not erased, a blackboard switching control button is started, a driving motor 9 in a transmission device 5 is started, the first blackboard, the second blackboard and the third blackboard 403 are exchanged clockwise, the first blackboard moves inwards to become a third blackboard of a new round, the second blackboard moves to the position of the first blackboard to become a first blackboard of a new round, the third blackboard protrudes forwards to replace the second blackboard to become a second blackboard of a new round.

As shown in fig. 2a, 2B, 2c and 2d, if the first blackboard content is to be wiped off, the blackboard switching and cleaning control button is started, the driving motor 9 of the transmission device 5 is started, the first blackboard, the second blackboard and the third blackboard are exchanged clockwise, the blackboard moves inwards to become the third blackboard of a new round, the second blackboard moves to the position of the first blackboard, becomes the first blackboard of a new round, the third blackboard protrudes forwards, the second blackboard is replaced to become the second blackboard of a new round, at this time, the switching of the blackboard is completed, the driving motor 9 of the transmission device 5 is stopped, as shown in fig. 2e and 2f, the cleaning motor 601 is started, the dust absorption powder brush 606 starts to work, moves from the point a to the point B, then returns quickly, and stops the cleaning motor 601. The teacher can write on the new second blackboard no matter which control button is started.

As shown in fig. 2a, the external board frame body is divided into a front rail frame groove 201, a middle rail frame groove 202 and a rear rail frame groove 203, and in a static state, a first blackboard is arranged in a first front groove area 13, a second blackboard is arranged in a second front groove area 14, a third blackboard is arranged in a third rear groove area 15, and a fourth rear groove area 16 is in an empty state. As shown in fig. 2e, the joints between the front rail frame groove 201 and the middle rail frame groove 202 and between the rear rail frame groove 203 are provided with moving notches 204, which form a moving channel 205 for the blackboard to move forward and backward.

When the blackboard starts to switch positions, as shown in fig. 2a, the blackboard three is driven by the blackboard three moving block 12 to move to the position of four 16 in the back groove zone; as shown in fig. 2b, the first blackboard rotates to the longitudinal direction from the transverse direction under the driving of the first blackboard-moving block 10, moves from the first 13 position of the front groove section to the third 15 position of the rear groove section, and the first blackboard-moving block 10 rotates to the transverse direction; as shown in fig. 2c, the second blackboard moves to a first 13 position in the front groove zone under the driving of a second blackboard moving block 11; as shown in fig. 2d, the third blackboard moving block 12 rotates from the horizontal direction to the vertical direction, moves from the fourth 16 position in the rear groove section to the second 14 position in the front groove section, and the third blackboard moving block 12 rotates back to the horizontal direction.

As shown in fig. 2e and 2f, when the dust-absorbing chalk starts cleaning the blackboard, the dust-absorbing chalk moves slowly from point a to point B by the moving block 605 and then returns quickly. The outward one side of collection powder box 610 is equipped with transparent observation window 615, can observe the dust fullness at any time, when reaching the maximum value, need clear up repeatedly usable.

Example 2:

in the embodiment shown in fig. 4, 9 and 10, the technical scheme is basically the same as that in the embodiment 1, and the difference is the transmission device. In this embodiment, the transmission device 5 includes a belt transmission device 7 for realizing left-right movement transposition of the blackboard and a screw rod transmission device 8 for realizing front-back movement transposition of the blackboard.

As shown in fig. 7, the belt transmission devices 7 are provided with a front group and a rear group, each group of belt transmission devices respectively comprises a belt transmission motor 701, an active transmission belt 702 and a passive transmission belt 703, the passive transmission belt 703 is movably arranged on the active transmission belt 702, and the blackboard 4 is arranged on the passive transmission belt 703. When the driven transmission belt moves back and forth, the driven transmission belt rotates.

As shown in fig. 8, the screw rod transmission device 8 is a dual screw rod transmission, the screw rod transmission device 8 is provided with a left group and a right group, and each group of screw rod transmission device is provided with two pairs of dual screw rod assemblies.

The double-screw assembly 8 comprises screw rods 801, a screw rod motor 802 and screw rod nuts 803, each screw rod 801 is driven by the screw rod motor 802 to rotate positively and negatively, the double screw rods are arranged up and down, the upper screw rod and the lower screw rod are respectively screwed with the screw rod nuts 803, and the screw rod nuts 803 on the upper screw rod and the lower screw rod are fixedly connected into a whole.

In this embodiment, the front and rear two groups of blackboards are arranged side by side along the front and rear of the plate frame, and the front and rear two groups of blackboards can exchange positions with each other, for example, the front group of blackboards includes a first blackboard 401 and a second blackboard 402, and the rear group of blackboards is a third blackboard 403. According to the direction opposite to a user, setting a first blackboard 401 and a second blackboard 402 to be positioned on the same plane from left to right and positioned at the positions where the front parts can be seen, setting the original position of a third blackboard 403 to be positioned behind the first blackboard 401 and arranged in parallel with the first blackboard 401, and setting the position of the third blackboard 4033 to be invisible from the front; and then moving the second blackboard 402 from right to left to the original position of the first blackboard 401, and finally moving the third blackboard 403 from back to front to the position of the original second blackboard 402, thereby realizing the position exchange of the three blackboards. In this embodiment, the technical solution is explained according to such an operation.

In this embodiment, as shown in fig. 6, the plate frame 2 is according to the length size after two blackboards are assembled, set up length, highly set up its height according to the blackboard, the whole frame that sets up of plate frame is cuboid frame structure, including left frame, right frame, upper ledge and lower frame, correspond about upper ledge and lower frame and be provided with preceding track frame groove 201, well track frame groove 202 and back track frame groove 203, and rail frame groove 202 is used for setting up clean collection grey subassembly in the upper ledge, realizes that clean collection grey subassembly can remove about and realize the cleanness to the blackboard.

The cleaning main body in the cleaning dust collecting assembly 6 is a cleaning strip 606, the cleaning dust collecting assembly further comprises a dust collecting box 610 communicated with the interior of the cleaning strip 606, a dust suction device is arranged in the dust collecting box 610, a cleaning motor 601 is in transmission connection with a transmission lead screw 602 and controls the forward and reverse rotation of the transmission lead screw, the transmission lead screw 602 is connected with a group of connecting pieces 616 welded to the top of the plate frame 2, the transmission lead screw 602 is in rotation connection with the connecting pieces 616, the transmission lead screw 602 can only rotate and cannot move up, down, left, right and back, the cleaning strip 606 is in threaded transmission connection with the transmission lead screw 602 through a moving block 605, and the cleaning strip 606 is parallel to the surface of the blackboard and is in contact with the surface of the blackboard; when the transmission screw 602 rotates forward, the moving block 605 moves from the left side to the right side of the transmission screw 602 to drive the brush strip 606 to move from left to right, so that the blackboard surface is cleaned. A plurality of dust suction holes 609 and a plastering 607 are arranged on the contact surface of the blackboard and one side of the plastering strip facing to the blackboard surface, the interior of the plastering strip is hollow and is provided with a cavity 608 communicated with the dust suction holes 609, and the cavity 608 in the plastering strip is communicated with a powder collecting box 610 at the lower end of the plastering strip; the powder collecting box 610 is provided with an air inlet 612 and an air outlet 613, the air inlet in the powder collecting box is provided with a suction fan 611, the air outlet 613 is provided with a filter screen 614, the air outlet is further provided with a sealing cover, the outer side surface of the powder collecting box is provided with a transparent observation window 615, the dust fullness can be observed at any time, and when the dust reaches the maximum value, the dust collecting box needs to be cleaned and can be repeatedly used.

The transmission device comprises a belt transmission device 7 and a screw rod transmission device 8, wherein the belt transmission device 7 is used for realizing the left-right movement of the blackboard, and the screw rod transmission device 8 is used for realizing the front-back movement of the blackboard.

The belt transmission device 7 is provided with a front group and a rear group, each group of transmission components respectively comprises a belt transmission motor 701, an active transmission belt 702 and a passive transmission belt 703, the passive transmission belt 703 is movably arranged on the active transmission belt 702, and the blackboard 4 is arranged on the passive transmission belt 703. When the driven transmission belt moves back and forth, the driven transmission belt rotates. The drive belt 702 includes a front drive belt 51 and a rear drive belt 52.

Each blackboard is respectively arranged on a group of blackboards and is provided with a passive transmission belt 703, a front active transmission belt and a rear active transmission belt are also respectively arranged on the front track frame groove 201 and the rear track frame groove 203 corresponding to the front group of blackboards and the rear group of blackboards, when the first blackboard and the second blackboard are positioned at the front positions, the passive transmission belts 703 corresponding to the first blackboard and the second blackboard are respectively arranged on the front active transmission belt of the front track frame groove and can move along the front active transmission belt, the passive transmission belts 703 at the lower parts of the third blackboard 403 are arranged on the rear active transmission belt, and when the positions of the blackboards are changed, the corresponding passive transmission belts 703 are also changed along with the change, so that the left and right movement of the black.

The front driving transmission belt and the rear driving transmission belt are respectively provided with a front belt transmission motor 46 and a rear belt transmission motor 45 which are used for controlling the rotation of the front main transmission belt 51 and the rear main transmission belt 52; the passive transmission belts of the three blackboard plates are respectively 48, 49 and 50, the passive transmission belts 48, 49 and 50 are respectively connected with the first blackboard, the second blackboard and the third blackboard, and when the front active transmission belt 51 and the rear active transmission belt 52 rotate, the front active transmission belt and the rear active transmission belt rotate to move left or right.

The screw rod transmission device 8 is used for realizing the movement of the front position and the rear position of the blackboard, the screw rod transmission device 8 is in double-screw transmission, the screw rod transmission device 8 is provided with a left group and a right group, and each group of screw rod transmission device is respectively provided with two pairs of double-screw rod components.

The double-screw assembly 8 comprises screw rods 801, a screw rod motor 802 and screw rod nuts 803, each screw rod 801 is driven by the screw rod motor 802 to rotate positively and negatively, the double screw rods are arranged up and down, the upper screw rod and the lower screw rod are respectively screwed with the screw rod nuts 803, and the two screw rod nuts 803 are fixedly connected into a whole.

As shown in fig. 5 and 7, the screw rods 801 in the dual screw rod transmission device corresponding to the first blackboard, the second blackboard and the third blackboard are respectively 17, 18, 19, 20, 21, 22, 23 and 24, wherein 17, 18, 19, 20, 21, 22, 23 and 24 respectively form four pairs of dual screw rods, and four pairs of screw rod motors 802 respectively arranged corresponding to the four pairs of screw rods are respectively: motors 29, 30, 31, 32, 33, 34, 35 and 36, screw rods 17 and 19 respectively correspond to the motors 29 and 31, screw rods 18 and 20 respectively correspond to the motors 30 and 32, screw rods 21 and 23 respectively correspond to the motors 33 and 35, screw rods 22 and 24 respectively correspond to the motors 34 and 36, and every two pairs of double screw rods control one blackboard to move inwards or outwards. The lead screw nuts 803 corresponding to the lead screws are respectively: the screw holes are arranged inside the transmission belt in the belt transmission assembly corresponding to each screw rod, so that the screw rods can be screwed out when the screw rods are screwed out, and the belt transmission assembly drives the blackboard to move inwards and outwards, namely move back and forth.

As shown in fig. 6, which is a sectional view of the upper frame of the blackboard, the middle is used for moving the brush strip, a connecting piece 616 is welded for connecting with a lead screw 602, the lead screw 602 is in transmission connection with a cleaning motor 601, and when the cleaning motor 601 operates, the lead screw rotates to drive a moving block 605 to move left or right. The traveling block 605 is welded to the breading bar 603 and the breading bar travels together as the traveling block 605 travels.

The movement of the blackboard is controlled by a transmission belt and a screw rod on the lower frame. As shown in fig. 5, 25 is a lower frame rear rail groove, 26 is a lower frame middle rail groove, 27 is a lower frame front rail groove, 28 is a storage area for storing chalk and the like, and the inside is a double-screw rod arrangement area, and the blackboard is not switched, the screw rod transmission device 8 is arranged in the storage area, and when switching is needed, the screw rod transmission device is screwed inwards and then is matched with the belt transmission device to realize the front and back movement of the blackboard.

The limit positions of the frame corresponding to the movement of each blackboard are respectively provided with a position sensor 61, and the position sensors 61 are in signal connection with a limit switch 60 and are used for judging and controlling whether the blackboard moves in place or not and controlling the blackboard to stop when the blackboard moves in place.

The technical scheme of the utility model is specifically described through the movement of three blackboards.

First, only switching between blackboards is performed without cleaning:

1. the first blackboard 401 and the second blackboard 402 are arranged in parallel at the front, and the third blackboard 403 is arranged at the back of the first blackboard 401: and after the teacher is full of the first blackboard 401 or full of the first blackboard 401 and the second blackboard 402, if the teacher wants to keep the content on the first blackboard 401 without wiping, starting a blackboard switching control button. After receiving the command, the single chip microcomputer 1 sends a command to the rear belt transmission motor 45, the rear belt transmission motor 45 rotates, the rear main transmission belt 52 in the lower frame rear rail groove 25 rotates under the driving of the rear belt transmission motor 45, the driven transmission belt 50 arranged on the rear main transmission belt 52 rotates under the driving of the rear main transmission belt 52 and moves rightwards, the blackboard three 403 on the driven transmission belt 50 is driven to move rightwards, when the blackboard three moves to the position of the limit switch 60, the single chip microcomputer receives the signal and sends the signal to the rear belt transmission motor 45 to stop moving, the rear main transmission belt 52 and the driven transmission belt 50 stop moving, and the blackboard three 403 is positioned behind the right frame, namely the blackboard two 402.

2. At the moment, the single chip sends signals to the motors 29 and 31, the motors run, the screw rods 17 and 19 are driven by the motors 29 and 31 to rotate from the outside to the inside of the passive transmission belt 48 until the screw rods 17 and 19 rotate respectively in the inside of the transmission belt 48, the motors 29 and 31 stop running, meanwhile, the motors 30 and 32 run to drive the screw rods 18 and 20 to rotate, the screw rods 18 and 20 drive the nuts 38 and 40 thereon to move inwards, meanwhile, the nuts 37 and 39 respectively welded with the nuts 38 and 40 also move inwards to drive the whole screw rods 17 and 19 to move inwards, so that the whole passive transmission belt 48 and the first blackboard 401 on the same are driven to move inwards until the whole passive transmission belt moves to the position of the back frame track groove, the motors 30 and 32 stop running, meanwhile, the motors 29 and 31 run (rotate reversely), the screw rods 17 and 19 penetrate through the threads in the passive transmission belt 48 to rotate outwards and stop rotating, then, the screw rods 17, 19 and the like are restored to the original positions through the reverse operation of the motors 30 and 32; the first blackboard 401 is sent to the back frame track groove.

3. After the first blackboard 401 is sent to the rear frame track groove, the front belt transmission motor 46 rotates under the control of the single chip microcomputer, meanwhile, the front main transmission belt 51 is controlled to rotate, the driven transmission belt 49 below the second blackboard 402 is driven to move from the right side to the left side, the driven transmission belt 49 drives the second blackboard 402 to move from the right side to the left side, after the position of the original first blackboard 401 is reached, the front belt transmission motor 46 stops running, the front driving transmission belt 51 stops rotating, and the second blackboard 402 is located in front of the first blackboard 401 and is placed in the front frame track groove.

4. At the moment, the singlechip 1 controls the motors 34 and 36 to operate to drive the screw rods 22 and 24 to rotate, the screw rods 22 and 24 drive the nuts 42 and 44 on the screw rods to move inwards, and meanwhile, the nuts 41 and 43 respectively welded with the nuts 42 and 44 also move inwards to drive the whole screw rods 21 and 23 to move inwards to the outer side of the passive conveyor belt 50 below the third blackboard and stop operating; the single chip microcomputer controls the motors 33 and 35 to operate, the screw rods 21 and 23 rotate to operate inwards, penetrate into the passive conveying belt 50 and then stop operating. Meanwhile, the motors 34 and 36 rotate reversely, the screw rods 21 and 23 are driven by the nuts 41 and 43 to drive the whole passive conveyor belt 50 and the blackboard to run in the three-way outer side groove, the running is stopped after the front frame track groove is reached, the motors 33 and 35 rotate reversely, and the screw rods 21 and 23 rotate out of the passive conveyor belt 50. At the moment, the first blackboard moves to the position of the original third blackboard.

5. Therefore, the second blackboard is located at the position of the first blackboard, the third blackboard is located at the position of the second blackboard, and the second blackboard is located at the position of the first blackboard, so that switching between the blackboards is completed.

And secondly, automatically wiping the first blackboard when the blackboards are switched:

1. the first blackboard 401 and the second blackboard 402 are arranged in parallel at the front, and the third blackboard 403 is arranged at the back of the first blackboard 401: and after the teacher is full of the first blackboard 401 or full of the first blackboard 401 and the second blackboard 402, if the teacher wants to keep the content on the first blackboard 401 without wiping, starting a blackboard switching control button. After receiving the command, the single chip microcomputer 1 sends a command to the rear belt transmission motor 45, the rear belt transmission motor 45 rotates, the rear main transmission belt 52 in the lower frame rear rail groove 25 rotates under the driving of the rear belt transmission motor 45, the driven transmission belt 50 arranged on the rear main transmission belt 52 rotates under the driving of the rear main transmission belt 52 and moves rightwards, the blackboard three 403 on the driven transmission belt 50 is driven to move rightwards, when the blackboard three moves to the position of the limit switch 60, the single chip microcomputer receives the signal and sends the signal to the rear belt transmission motor 45 to stop moving, the rear main transmission belt 52 and the driven transmission belt 50 stop moving, and the blackboard three 403 is positioned behind the right frame, namely the blackboard two 402.

2. At the moment, the single chip sends signals to the motors 29 and 31, the motors run, the screw rods 17 and 19 are driven by the motors 29 and 31 to rotate from the outside to the inside of the passive transmission belt 48 until the screw rods 17 and 19 rotate respectively in the inside of the transmission belt 48, the motors 29 and 31 stop running, meanwhile, the motors 30 and 32 run to drive the screw rods 18 and 20 to rotate, the screw rods 18 and 20 drive the nuts 38 and 40 thereon to move inwards, meanwhile, the nuts 37 and 39 respectively welded with the nuts 38 and 40 also move inwards to drive the whole screw rods 17 and 19 to move inwards, so that the whole passive transmission belt 48 and the first blackboard 401 on the same are driven to move inwards until the whole passive transmission belt moves to the position of the back frame track groove, the motors 30 and 32 stop running, meanwhile, the motors 29 and 31 run (rotate reversely), the screw rods 17 and 19 penetrate through the threads in the passive transmission belt 48 to rotate outwards and stop rotating, then, the screw rods 17, 19 and the like are restored to the original positions through the reverse operation of the motors 30 and 32; the first blackboard 401 is sent to the back frame track groove.

3. After the blackboard 1 is sent to the inner groove, the single chip microcomputer controls the cleaning motor 601 and the dust suction fan motor to operate, the transmission screw rod 602 rotates to drive the moving block 605 on the transmission screw rod to move from left to right, so that the chalk characters on the blackboard I are separated from the blackboard I under the wiping of the blackboard I, and the chalk characters are sucked into the cavity inside the chalk strips from the dust suction holes in the blackboard I to the powder collecting box 604. When the painting strips move to the right side, the single chip microcomputer controls the cleaning motor 601 to run reversely, and when the painting strips return to the original position, the cleaning motor 601 and the dust suction fan motor stop running, and the first blackboard is automatically wiped.

4. And (3) when the step 3 is carried out, after the first blackboard 401 is sent to the rear frame track groove, the front belt transmission motor 46 rotates under the control of the single chip microcomputer, the front main transmission belt 51 is controlled to rotate at the same time, the driven transmission belt 49 below the second blackboard 402 is driven to move from the right side to the left side, the driven transmission belt 49 drives the second blackboard 402 to move from the right side to the left side, after the position of the original first blackboard 401 is reached, the front belt transmission motor 46 stops running, the front driving transmission belt 51 stops rotating, and the second blackboard 402 is positioned in front of the first blackboard 401 and is placed in the front frame track groove.

5. At the moment, the singlechip 1 controls the motors 34 and 36 to operate to drive the screw rods 22 and 24 to rotate, the screw rods 22 and 24 drive the nuts 42 and 44 on the screw rods to move inwards, and meanwhile, the nuts 41 and 43 respectively welded with the nuts 42 and 44 also move inwards to drive the whole screw rods 21 and 23 to move inwards to the outer side of the passive conveyor belt 50 below the third blackboard and stop operating; the single chip microcomputer controls the motors 33 and 35 to operate, the screw rods 21 and 23 rotate to operate inwards, penetrate into the passive conveying belt 50 and then stop operating. Meanwhile, the motors 34 and 36 rotate reversely, the screw rods 21 and 23 are driven by the nuts 41 and 43 to drive the whole passive conveyor belt 50 and the blackboard to run in the three-way outer side groove, the running is stopped after the front frame track groove is reached, the motors 33 and 35 rotate reversely, and the screw rods 21 and 23 rotate out of the passive conveyor belt 50. At the moment, the first blackboard moves to the position of the original third blackboard.

6. Therefore, the second blackboard is located at the position of the first blackboard, the third blackboard is located at the position of the second blackboard, and the second blackboard is located at the position of the first blackboard, so that switching between the blackboards is completed.

And thirdly, automatically wiping the blackboard 1 and the blackboard 2 when the blackboards are switched: and repeating the second content, and then repeating the steps 1-6 to finish the automatic wiping of the original second blackboard.

When the self-cleaning blackboard based on the single chip microcomputer is used, no dust flies, the health of teachers and students is facilitated, and no environmental pollution is caused; the blackboard service area is increased by 0.5 time; the automatic wiping is realized, and the time for a teacher to wipe the blackboard is saved; for key board books, the key board books can be written on the same blackboard by switching, and can be directly transferred to a secondary blackboard for review and summarization when the blackboard is not erased and the class tail is small and time-saving; the dust-absorbing chalk brush strip has the advantages that dust cannot be accumulated on the surface of the chalk dust-absorbing chalk brush strip, the chalk dust-absorbing chalk brush strip can be wiped cleanly, and the phenomenon that the blackboard eraser is not clean and the like cannot be caused.

The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto. All equivalent changes made according to the shape and structure of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a self-cleaning blackboard based on singlechip which characterized in that includes:

the single chip microcomputer (1) is used for controlling the self-cleaning blackboard;

the blackboard switching device comprises a plate frame (2) and a frame, wherein the plate frame (2) is used for supporting a blackboard and realizing blackboard switching, and a track frame groove is formed in the plate frame (2);

the blackboard assembly (3) is connected with a control signal of the singlechip (1), and the blackboard assembly (3) comprises two groups of blackboards (4) and a transmission device (5) which are arranged in the plate frame (2), can move around the plate frame and are arranged in parallel;

the cleaning dust collecting assembly (6) is connected with a control signal of the singlechip (1) and is used for automatically cleaning the blackboard and automatically collecting dust, and the cleaning dust collecting assembly is linked with the blackboard assembly or acts independently; the cleaning dust collecting assembly (6) is arranged in a plate frame rail groove between the front group of blackboards and the rear group of blackboards in parallel to the blackboards and moves left and right along the rail groove.

2. The self-cleaning blackboard based on a single chip microcomputer according to claim 1, wherein: the blackboard is characterized in that the plate frame (2) is of a frame structure, the plate frame is provided with track frame grooves from top to bottom, and the track frame grooves are provided with three rows of track frame grooves in front, middle and back in parallel along the direction perpendicular to the blackboard surface.

3. The self-cleaning blackboard based on a single chip microcomputer according to claim 2, characterized in that: the track frame groove comprises a front track frame groove (201), a middle track frame groove (202) and a rear track frame groove (203) which are arranged in parallel along the direction vertical to the wall surface; the joints of the front track frame groove (201) and the middle track frame groove (202) and the rear track frame groove (203) are provided with moving gaps (204) to form a moving channel (205) when the blackboard moves forwards and backwards.

4. The self-cleaning blackboard based on a single chip microcomputer according to any one of claims 1 to 3, characterized in that: the transmission device (5) comprises a transmission motor (9) and moving blocks connected with the transmission motor, each blackboard is driven by a group of moving blocks to move left and right back and forth, and the moving blocks rotate in the direction when moving back and forth.

5. The self-cleaning blackboard based on a single chip microcomputer according to any one of claims 1 to 3, characterized in that: the transmission device (5) comprises a belt transmission device (7) for realizing left-right movement transposition of the blackboard and a screw rod transmission device (8) for realizing front-back movement transposition of the blackboard.

6. The self-cleaning blackboard based on a single chip microcomputer according to claim 5, wherein: the blackboard eraser is characterized in that the belt transmission devices (7) are provided with a front group and a rear group, each group of belt transmission devices respectively comprises a belt transmission motor (701), an active transmission belt (702) and a passive transmission belt (703), the passive transmission belts (703) are movably arranged on the active transmission belts (702), and the blackboard (4) is arranged on the passive transmission belts (703).

7. The self-cleaning blackboard based on a single chip microcomputer according to claim 5, wherein: the screw rod transmission device (8) is in double-screw rod transmission, the screw rod transmission device (8) is provided with a left group and a right group, and each group of screw rod transmission device is respectively provided with two pairs of double-screw rod components; the double-screw assembly comprises screw rods (801), screw rod motors (802) and screw rod nuts (803), each screw rod (801) is driven by one screw rod motor (802) to rotate positively and negatively, the double screw rods are arranged up and down, the upper screw rod and the lower screw rod are respectively screwed with the screw rod nuts (803), and the screw rod nuts (803) on the upper screw rod and the lower screw rod are fixedly connected into a whole.

8. The self-cleaning blackboard based on a single chip microcomputer according to any one of claims 1 to 3, characterized in that: the cleaning and dust collecting assembly (6) comprises a cleaning motor (601), a transmission screw rod (602), a cleaning and brushing main body (603) and a cleaning and collecting device (604); the transmission screw rod (602) is connected with the cleaning motor (601) and is driven by the cleaning motor (601) to rotate; the cleaning and brushing main body (603) is connected with the transmission screw rod (602) through a moving block (605) in threaded connection with the transmission screw rod (602) and is driven by the transmission screw rod (602) to rotate forward or backward to realize wiping movement, and the cleaning and collecting device (604) is arranged below the cleaning and brushing main body (603) and is communicated with the inside of the cleaning and brushing main body (603).

9. The self-cleaning blackboard based on a single chip microcomputer according to claim 8, wherein: the main part of brushing (603) including whitewash strip (606) and whitewash (607) of setting on whitewash strip (606), whitewash strip (606) inside be hollow structure, be provided with cavity (608), whitewash (607) equipartition in one side of whitewash strip towards blackboard face, the whitewash inboard whitewash strip on be provided with the ash sucking hole (609) of intercommunication cavity.

10. The self-cleaning blackboard based on a single chip microcomputer according to claim 8, wherein: the cleaning and collecting device (604) comprises a powder collecting box (610) and a suction fan (611) arranged inside the powder collecting box, wherein an air inlet (612) and an air outlet (613) are arranged on the powder collecting box (610), the suction fan (611) is arranged at the air inlet (612), and a filter screen (614) is arranged at the air outlet (613); the compact (610) on still be provided with transparent observation window (615).

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