CN215970844U

CN215970844U - Teaching blackboard with clean mechanism slides

Info

Publication number: CN215970844U
Application number: CN202122480491.2U
Authority: CN
Inventors: 张洋洋; 徐彬; 郑志宇; 王德银
Original assignee: Anhui University of Technology AHUT
Current assignee: Anhui University of Technology AHUT
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-08
Anticipated expiration: 2031-10-14

Abstract

The utility model discloses a teaching blackboard with a sliding cleaning mechanism, and belongs to the technical field of teaching blackboards. The blackboard eraser comprises a blackboard, wherein the blackboard is fixed on a main body mechanism, the main body mechanism comprises a vertical machine box, the upper end and the lower end of the vertical machine box are respectively provided with a horizontal machine box which is communicated with the vertical machine box in a horizontally extending mode, the blackboard is arranged between the two horizontal machine boxes, a cleaning mechanism used for erasing handwriting on the blackboard is arranged in the vertical machine box, the upper end and the lower end of the cleaning mechanism are respectively fixed on a sliding mechanism, and the cleaning mechanism is driven by the sliding mechanism to do reciprocating motion along the length direction of the blackboard. The utility model aims to solve the defects of time and labor consumption in cleaning of a teaching blackboard in the prior art, and provides the teaching blackboard with the sliding cleaning mechanism, which can automatically clean the teaching blackboard, and is good in cleaning effect and convenient to use.

Description

Teaching blackboard with clean mechanism slides

Technical Field

The utility model relates to the technical field of teaching blackboards, in particular to a teaching blackboard with a sliding cleaning mechanism.

Background

The teaching blackboard is not a black writing board for teaching, but is a plane board which can be repeatedly written in the traditional sense, and the board surface of the teaching blackboard is hard and does not reflect light and is used for teaching. The board of the teaching blackboard is generally made of a magnetic color-coated steel plate.

Teaching blackboard on the market structure is comparatively simple, does not have the clean function of slip, and is comparatively consuming time and wasting power when the student washs it, and the blackboard height is higher simultaneously, and the cleaning work of being not convenient for expandes. Therefore, the teaching blackboard with the automatic cleaning function is urgently needed to be designed, the teaching blackboard can be automatically cleaned, the cleaning effect is good, and the use is convenient.

Through search, a great number of patents have been published on the study of teaching blackboards, such as the chinese patent application No.: 2021104622371, the name of invention creation is: the utility model provides a clean blackboard, this scheme provides a clean blackboard, includes interconnect's clipboard and mount pad, and the mount pad slides and is provided with the subassembly of erasing that is used for erasing the blackboard writing, and the mount pad still is provided with the subassembly that sprays that is used for spraying the blackboard. In the in-process of in-service use, can use the chalk to write on the clipboard of connection on the mount pad, when needs are erased chalk writing, can spray moist clipboard through spray assembly water earlier, then erase chalk writing through erasing the subassembly, chalk writing is wet because of being sprayed by the water this moment, so chalk dust can not fly about also when erasing, also can not fall on one's body, thereby avoid the user to be forced to inhale chalk dust, convenient and sanitary is used, and is favorable to being healthy.

Also as in chinese patent application No.: 201210568503X, entitled: a blackboard cleaning system, this scheme has provided a blackboard cleaning system, including blackboard body that can move from side to side, slideway, outer gimbal and blackboard trough, set up the anchor on both sides of blackboard body, the anchor can be fastened on the outer gimbal after rotating; the two sides of the blackboard body are respectively provided with a cleaning strip, two ends of the cleaning strip can horizontally move along the upper side and the lower side of the outer frame, the blackboard groove is provided with a pusher which can horizontally move, and one side of the blackboard groove is provided with a recovery box.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to solve the defects of time and labor consumption in cleaning of a teaching blackboard in the prior art, and provides the teaching blackboard with the sliding cleaning mechanism, which can automatically clean the teaching blackboard, and is good in cleaning effect and convenient to use.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses a teaching blackboard with a sliding cleaning mechanism, which comprises a blackboard, wherein the blackboard is fixed on a main mechanism, the main mechanism comprises a vertical machine box, the upper end and the lower end of the vertical machine box are respectively provided with a horizontal machine box communicated with the vertical machine box in a horizontally extending manner, the blackboard is arranged between the two horizontal machine boxes, a cleaning mechanism used for erasing handwriting on the blackboard is arranged in the vertical machine box, the upper end and the lower end of the cleaning mechanism are respectively fixed on the sliding mechanism and do reciprocating motion along the length direction of the blackboard under the driving of the sliding mechanism.

As a further improvement of the utility model, the sliding mechanism comprises toothed chains symmetrically arranged in an upper horizontal case and a lower horizontal case, the upper end and the lower end of the cleaning mechanism are respectively fixed on the upper toothed chain and the lower toothed chain, a transmission gear meshed with the upper toothed chain and the lower toothed chain is arranged at the end part of one side of the lower toothed chain close to the vertical case, and the transmission gear is driven by a motor to rotate to drive the toothed chains and the cleaning mechanism to reciprocate along the length direction of the blackboard.

As a further improvement of the utility model, the cleaning mechanism comprises a sponge wiper which is vertically arranged, the upper end and the lower end of the sponge wiper are respectively fixed on the upper side and the lower side of the supporting rod through a telescopic rod which is horizontally arranged, the top and the bottom of the supporting rod are respectively fixed on an upper toothed chain and a lower toothed chain, and the sponge wiper and the supporting rod are arranged in parallel.

As a further improvement of the utility model, the cleaning mechanism also comprises a rolling brush arranged in parallel with the sponge wiper, the center of the rolling brush is provided with a fixed rod, the upper end and the lower end of the fixed rod are respectively fixed on the upper side and the lower side of the other supporting rod through a horizontally arranged telescopic rod, and the top and the bottom of the supporting rod are respectively fixed on the upper toothed chain and the lower toothed chain.

As a further improvement of the utility model, a through hole for the abutting screw to pass through is arranged in the middle of the supporting rod, an internal thread section matched with the external thread section on the abutting screw is arranged on the inner side wall of the through hole, and an extrusion block for abutting against a sponge wiper or a rolling brush is arranged at the end part of the abutting screw far away from the supporting rod.

As a further improvement of the utility model, the end part of the abutting screw rod far away from the extrusion block is provided with a knob, the position of the vertical case corresponding to the support rod is provided with a horizontally extending avoidance groove, the end part of one side of the avoidance groove close to the blackboard extends to the edge position of the vertical case, and the knob is positioned at the outer side of the vertical case.

As a further improvement of the utility model, the end parts of one sides of the two horizontal machine boxes far away from the vertical machine box are connected with a placing shell, a placing groove is arranged in the placing shell, the outer side wall of the placing shell is provided with an opening, the opening is covered with a dustproof cover plate, and the upper end and the lower end of the dustproof cover plate are fixed on the placing shell through fixing pieces.

As a further improvement of the blackboard eraser, the blackboard eraser further comprises a cleaning mechanism, the cleaning mechanism comprises a water tank arranged in the placing groove, a cleaning pipeline is arranged on the water tank and comprises a vertical pipeline connected with the water tank, a horizontal pipeline is horizontally arranged on the top of the vertical pipeline in an extending mode and located above the blackboard, and a plurality of spraying heads are evenly arranged on the horizontal pipeline at intervals.

As a further improvement of the utility model, the cleaning pipeline is provided with a valve, and the bottom of the water tank is provided with a water pump which is connected with the cleaning pipeline.

As a further improvement of the utility model, the height dimension of the roller brush and the sponge eraser is kept consistent, and the height dimension of the sponge eraser is also kept consistent with that of the blackboard.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) according to the teaching blackboard with the sliding cleaning mechanism, the upper end and the lower end of the cleaning mechanism are respectively fixed on the sliding mechanism and reciprocate along the length direction of the blackboard under the driving of the sliding mechanism, so that writing on the blackboard can be automatically cleaned, meanwhile, the cleaning mechanism reciprocates under the driving of the sliding mechanism to repeatedly clean the blackboard, the cleaning effect is better, time and labor are saved, manual cleaning is not needed, and the cleaning efficiency is effectively improved.

(2) According to the teaching blackboard with the sliding cleaning mechanism, when the motor rotates forwards, the toothed chain is driven by the transmission gear to horizontally move rightwards, so that the cleaning mechanism on the toothed chain is driven to slide out of the vertical case rightwards and wipe the handwriting on the blackboard; when the motor rotates reversely, the toothed chain horizontally moves leftwards under the driving of the transmission gear, the cleaning mechanism on the toothed chain is driven to clean the handwriting on the blackboard again and enters the vertical case leftwards, the reciprocating cleaning effect can be achieved, and the cleaning effect is better.

(3) According to the teaching blackboard with the sliding cleaning mechanism, the end part of the abutting screw rod, which is far away from the supporting rod, is provided with the extrusion block for abutting against the sponge eraser or the rolling brush, and the extrusion block is used for adjusting the position of the sponge eraser or the rolling brush, so that the sponge eraser or the rolling brush is ensured to be tightly attached to the surface of the blackboard, and the blackboard is conveniently cleaned. The front and rear positions of the extrusion block are adjusted by screwing the abutting screw rod into or out of the through hole, and the whole position of the sponge eraser or the rolling brush is automatically adjusted through the telescopic rod, so that the attaching degree of the whole sponge eraser or the rolling brush and the surface of the blackboard is ensured, and the subsequent cleaning work is facilitated.

(4) According to the teaching blackboard with the sliding cleaning mechanism, liquid is sprayed on the blackboard through the spray head, then the sliding mechanism drives the roller and the sponge eraser to slide towards the right side through forward rotation of the motor, when the roller and the sponge eraser slide out of the vertical case, the motor stops, the front and back positions of the extrusion block are adjusted through the manual rotation of the knob and are abutted against the roller or the sponge eraser, the extrusion block is pushed inwards to enable the roller or the sponge eraser to be attached to the surface of the blackboard, then the roller is firstly used for rolling and brushing the blackboard, so that the blackboard is cleaner and the marks are reduced, water stains on the surface of the blackboard are absorbed through the sponge eraser, the cleaning efficiency is improved, the roller and the sponge eraser are synchronously used for wiping at the front position and the back position, double wiping is realized, the cleaning effect is effectively ensured, and the cleaning efficiency is effectively improved.

Drawings

FIG. 1 is a schematic perspective view of a teaching blackboard having a sliding cleaning mechanism according to the present invention;

FIG. 2 is a schematic view showing an interior front view of a teaching blackboard having a sliding cleaning mechanism according to the present invention;

FIG. 3 is a partial schematic view of the sliding mechanism of the present invention;

fig. 4 is a left side view of the structure of fig. 2.

The reference numerals in the schematic drawings illustrate:

1. a main body mechanism; 101. a blackboard; 102. a wastewater tank; 103. a dust-proof cover plate; 104. a fixing member; 110. a vertical case; 120. a horizontal case; 2. a sliding mechanism; 201. a motor; 202. a transmission gear; 203. a toothed chain; 21. a tooth block; 22. a guide wheel; 204. fixing a connecting block; 205. a support bar; 3. a cleaning mechanism; 301. extruding the block; 302. tightly abutting against the screw rod; 303. a knob; 304. a telescopic rod; 305. rolling and brushing; 306. sponge wiping; 4. a cleaning mechanism; 401. a water tank; 402. a water pump; 403. cleaning a pipeline; 404. a sprinkler head; 405. and (4) a valve.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

With reference to fig. 1-4, the teaching blackboard with a sliding cleaning mechanism of this embodiment includes a blackboard 101, the blackboard 101 is fixed on a main body mechanism 1, wherein the main body mechanism 1 includes a vertical case 110, upper and lower ends of the vertical case 110 respectively extend horizontally to be provided with a horizontal case 120 communicated with the vertical case, the blackboard 101 is installed between the two horizontal cases 120, and two ends of the two horizontal cases 120 in the length direction extend beyond two ends of the blackboard 101 in the length direction. The vertical case 110 is internally provided with a cleaning mechanism 3 for erasing the writing on the blackboard 101, and one side of the vertical case 110 close to the blackboard 101 is provided with an opening for the cleaning mechanism 3 to pass through, so that the cleaning mechanism 3 can conveniently slide out or be retracted into the vertical case 110. Wherein the upper and lower both ends of clean mechanism 3 are fixed respectively on slide mechanism 2 to being reciprocating motion along blackboard 101's length direction under slide mechanism 2's the drive, can cleaning the writing on blackboard 101 automatically, clean mechanism 3 realizes cleaning blackboard 101's repetition simultaneously under slide mechanism 2's drive reciprocating motion, and clean effect is better, and labour saving and time saving does not need artifical manual cleaning, has effectively improved clean efficiency.

As shown in fig. 2 and fig. 3, in this embodiment, the sliding mechanism 2 includes two toothed chains 203 symmetrically disposed in the upper and lower horizontal boxes 120, the upper and lower ends of the cleaning mechanism 3 are respectively fixed on the two toothed chains 203, and a transmission gear 202 engaged with the lower toothed chain 203 is disposed at an end of one side of the lower toothed chain 203 close to the vertical box 110, and the transmission gear 202 is driven by a motor 201 to rotate to drive the toothed chains 203 and the cleaning mechanism 3 to reciprocate along the length direction of the blackboard 101. The toothed chain 203 comprises two guide wheels 22 symmetrically arranged on two sides of the length direction of the blackboard 101, a rack is sleeved on each guide wheel 22, a toothed block 21 meshed with the transmission gear 202 is arranged on each rack, and when the motor 201 rotates forwards, the toothed chain 203 is driven by the transmission gear 202 to horizontally move rightwards, so that the cleaning mechanism 3 on the toothed chain 203 is driven to slide out of the vertical case 110 rightwards and wipe the handwriting on the blackboard 101; when the motor 201 rotates reversely, the toothed chain 203 horizontally moves leftwards under the driving of the transmission gear 202, the cleaning mechanism 3 on the toothed chain 203 is driven to wipe the writing on the blackboard 101 again and enters the vertical case 110 leftwards, the reciprocating wiping effect can be achieved, and the cleaning effect is better.

As shown in fig. 2 and 4, the cleaning mechanism 3 in this embodiment includes a sponge wiper 306 vertically disposed, the upper and lower ends of the sponge wiper 306 are respectively fixed on the upper and lower sides of the supporting rod 205 through a horizontally disposed telescopic rod 304, and the top and bottom of the supporting rod 205 are respectively fixed on the upper and lower toothed chains 203, specifically, as shown in fig. 2 and 4, the top and bottom of the supporting rod 205 in this embodiment are both provided with a fixed connection block 204, and the fixed connection block 204 is fixed on the toothed chain 203, and the sponge wiper 306 and the supporting rod 205 are disposed in parallel to each other. The telescopic rod 304 is connected with the metal fixing shell of the sponge eraser 306, the position of the sponge eraser 306 can be automatically adjusted in a telescopic mode, the sponge eraser 306 is guaranteed to be in a tightly abutting state with the blackboard 101, and therefore a good cleaning effect is guaranteed. The sponge eraser 306 is fixed on the support rod 205 through the telescopic rod 304, the support rod 205 is driven by the sliding mechanism 2 to horizontally reciprocate along the length direction of the blackboard 101, and then the sponge eraser 306 is driven to wipe the writing on the surface of the blackboard 101 back and forth, so that automatic cleaning is realized.

In this embodiment, the cleaning mechanism 3 further includes a rolling brush 305 parallel to the sponge wiper 306, a fixing rod is disposed at the center of the rolling brush 305, the upper and lower ends of the fixing rod are respectively fixed to the upper and lower sides of another supporting rod 205 through a horizontally disposed telescopic rod 304, and the top and bottom of the supporting rod 205 are respectively fixed to the upper and lower toothed chains 203. The height of the rolling brush 305 is consistent with that of the sponge eraser 306, and the height of the sponge eraser 306 is consistent with that of the blackboard 101, so that the blackboard 101 can be completely erased in the sliding erasing process, and sanitary dead angles are avoided. The rolling brush 305 is located on the right side of the sponge eraser 306 in the embodiment, when the blackboard eraser is used, the blackboard 101 is firstly rolled and cleaned by the rolling brush 305, and then the blackboard 101 is comprehensively erased by the sponge eraser 306, so that the cleaning effect on the blackboard 101 can be effectively guaranteed.

As shown in fig. 4, in the present embodiment, a through hole for the tightening screw 302 to pass through is formed in the middle position of the supporting rod 205, an internal thread section matched with the external thread section on the tightening screw 302 is disposed on the inner side wall of the through hole, and an extrusion block 301 for tightening the sponge eraser 306 or the rolling brush 305 is disposed at the end of the tightening screw 302 far away from the supporting rod 205, where the extrusion block 301 is used to adjust the position of the sponge eraser 306 or the rolling brush 305, so as to ensure that the sponge eraser 306 or the rolling brush 305 is tightly attached to the surface of the blackboard 101, thereby facilitating the cleaning of the blackboard 101. The front and rear positions of the extrusion block 301 are adjusted by screwing the abutting screw rod 302 into or out of the through hole, and the whole position of the sponge eraser 306 or the rolling brush 305 is automatically adjusted by the telescopic rod 304, so that the adhesion degree of the whole sponge eraser 306 or the rolling brush 305 and the surface of the blackboard 101 is ensured, and the subsequent cleaning work is facilitated.

As shown in fig. 1, in this embodiment, a knob 303 is disposed at an end of the tightening screw 302 away from the extrusion block 301, and the tightening screw 302 is adjusted by the knob 303 to screw into or out of the through hole, so as to adjust the front and rear positions of the extrusion block 301, thereby facilitating manual adjustment. In this embodiment, an avoiding groove 111 extending horizontally is provided at a position of the vertical case 110 corresponding to the support rod 205, one side end of the avoiding groove 111 close to the blackboard 101 extends to an edge position of the vertical case 110, and the knob 303 is located at an outer side of the vertical case 110. After the telescopic rod 305 slides out of the vertical case 110, the forward and backward positions of the extrusion block 301 are adjusted by manually rotating the knob 303 and finally abut against the sponge eraser 306, so that the sponge eraser 306 is more attached to the blackboard 101.

In this embodiment, the end of one side of the two horizontal boxes 120 away from the vertical box 110 is connected with a placing casing, a placing groove is arranged inside the placing casing, an opening is arranged on the outer side wall of the placing casing, the opening is covered with a dust-proof cover plate 103, and the upper end and the lower end of the dust-proof cover plate 103 are fixed on the placing casing through fixing pieces 104. Specifically, mounting 104 is rotatory piece in this embodiment, can realize the effect of rotatory block dust cover plate 103, places dust cover plate 103 when placing the opening part of casing, and manual rotation is rotatory piece 104, fixes dust cover plate 103 on placing the casing, can effectively prevent that debris such as dust from getting into place the casing inside.

The blackboard cleaning device further comprises a cleaning mechanism 4, the cleaning mechanism 4 comprises a water tank 401 arranged in the placing groove, a cleaning pipeline 403 is arranged on the water tank 401, the cleaning pipeline 403 comprises a vertical pipeline connected with the water tank 401, a horizontal pipeline is horizontally arranged on the top of the vertical pipeline in an extending mode, the horizontal pipeline is located above the blackboard 101, a plurality of spray heads 404 are evenly arranged on the horizontal pipeline at intervals, and the spray heads 404 are used for cleaning liquid sprayed on the blackboard 101. Wherein the cleaning pipe 403 is provided with a valve 405, and the spraying operation is controlled by the valve 405. The bottom of the water tank 401 is provided with a water pump 402, and the water pump 402 is connected with a cleaning pipe 403. When the classroom is cleaned or cleaned, the valve 405 is opened to spray liquid on the blackboard 101, so that the blackboard 101 is cleaned, the blackboard 101 is cleaner, and the marks are reduced. Waste water tank 102 in this embodiment is installed in the lower extreme of blackboard 101, and the length direction both ends of waste water tank 102 extend beyond the length direction both ends of blackboard 101, collects the processing to the produced waste water of wasing blackboard 101, prevents that waste water from flowing into in the horizontal machine box 120 of below, avoids slide mechanism 2 to rust and breaks down, effectively prolongs the life of equipment.

When the blackboard 101 of the embodiment is used for sweeping a classroom or cleaning a classroom, the valve 405 is manually rotated, the liquid is sprayed on the blackboard 101 through the spraying head 404, then the motor 201 rotates forwards, the sliding mechanism 2 drives the roller 305 and the sponge eraser 306 to slide towards the right side, when the roller 305 and the sponge eraser 306 both slide out of the vertical case 110, the motor 201 stops, the knob 303 is manually rotated to adjust the front and back positions of the extrusion block 304 and enable the extrusion block to abut against the roller 305 or the sponge eraser 306, the extrusion block is pushed inwards to enable the roller 305 or the sponge eraser 306 to be attached to the surface of the blackboard 101, then the roller 305 is firstly used for rolling and brushing the blackboard 101 through the roller 305, the blackboard 101 is cleaner, the marks are reduced, the sponge eraser 306 is used for absorbing water stains on the surface of the blackboard 101, the cleaning efficiency is improved, the roller 305 and the sponge eraser 306 perform wiping work synchronously at the front and back positions, the double wiping is adopted, and the cleaning effect is effectively ensured, and effectively improves the cleaning efficiency. Finally, when the motor 201 rotates reversely, the sliding mechanism 2 drives the roller 305 and the sponge wiper 306 to slide to the left, and the wiping and cleaning work is repeated to further ensure the cleaning effect.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides a teaching blackboard with clean mechanism slides which characterized in that: including blackboard (101), blackboard (101) are fixed on main part mechanism (1), and wherein main part mechanism (1) includes vertical machine box (110), and the upper and lower both ends of vertical machine box (110) level extension respectively is provided with rather than horizontal machine box (120) that are linked together, installs blackboard (101) between two horizontal machine boxes (120), be provided with in vertical machine box (110) and be used for erasing the clean mechanism (3) of writing on blackboard (101), the upper and lower both ends of clean mechanism (3) are fixed respectively on slide mechanism (2) to do reciprocating motion along the length direction of blackboard (101) under the drive of slide mechanism (2).

2. An instructional blackboard with a sliding cleaning mechanism, according to claim 1, wherein: the sliding mechanism (2) comprises toothed chains (203) which are symmetrically arranged in an upper horizontal machine box and a lower horizontal machine box (120), the upper end and the lower end of the cleaning mechanism (3) are respectively fixed on the upper toothed chain and the lower toothed chain (203), a transmission gear (202) which is meshed with the upper toothed chain and the lower toothed chain is arranged at the end part of one side, close to the vertical machine box (110), of the lower toothed chain (203), and the transmission gear (202) rotates under the driving of a motor to drive the toothed chains (203) and the cleaning mechanism (3) to do reciprocating motion along the length direction of the blackboard (101).

3. An instructional blackboard with a sliding cleaning mechanism, according to claim 2, wherein: the cleaning mechanism (3) comprises a sponge wiper (306) which is vertically arranged, the upper end and the lower end of the sponge wiper (306) are respectively fixed on the upper side and the lower side of the supporting rod (205) through a telescopic rod (304) which is horizontally arranged, the top and the bottom of the supporting rod (205) are respectively fixed on an upper toothed chain (203) and a lower toothed chain (203), and the sponge wiper (306) and the supporting rod (205) are arranged in parallel.

4. An instructional blackboard with a sliding cleaning mechanism, according to claim 3, wherein: the cleaning mechanism (3) further comprises a rolling brush (305) which is arranged in parallel with the sponge wiper (306), a fixed rod is arranged at the center of the rolling brush (305), the upper end and the lower end of the fixed rod are respectively fixed on the upper side and the lower side of another supporting rod (205) through a horizontally arranged telescopic rod (304), and the top and the bottom of the supporting rod (205) are respectively fixed on the upper toothed chain and the lower toothed chain (203).

5. An instructional blackboard with a sliding cleaning mechanism, according to claim 4, wherein: the middle position of the supporting rod (205) is provided with a through hole for the abutting screw rod (302) to pass through, the inner side wall of the through hole is provided with an internal thread section matched with the external thread section on the abutting screw rod (302), and the end part of the abutting screw rod (302) far away from the supporting rod (205) is provided with an extrusion block (301) for abutting against the sponge wiper (306) or the rolling brush (305).

6. An instructional blackboard with a sliding cleaning mechanism, according to claim 5, wherein: the end part of the abutting screw rod (302) far away from the extrusion block (301) is provided with a knob (303), the position of the vertical case (110) corresponding to the support rod (205) is provided with a horizontally extending avoiding groove (111), the end part of one side of the avoiding groove (111) close to the blackboard (101) extends to the edge position of the vertical case (110), and the knob (303) is positioned on the outer side of the vertical case (110).

7. An educational blackboard having a sliding cleaning mechanism, according to any one of claims 1 to 6, wherein: the end part of one side of the two horizontal machine boxes (120) far away from the vertical machine box (110) is connected with a placing shell, a placing groove is formed in the placing shell, an opening is formed in the outer side wall of the placing shell, a dustproof cover plate (103) covers the opening, and the upper end and the lower end of the dustproof cover plate (103) are fixed on the placing shell through fixing pieces (104).

8. An instructional blackboard having a sliding cleaning mechanism, according to claim 7, wherein: still include wiper mechanism (4), wiper mechanism (4) are provided with washing pipeline (403) including setting up water tank (401) in the standing groove on water tank (401), wash pipeline (403) including the vertical pipeline that links to each other with water tank (401), and the top level of vertical pipeline extends and is provided with horizontal pipeline, and horizontal pipeline is located the top of blackboard (101), and the even interval is provided with a plurality of sprinkler heads (404) on the horizontal pipeline.

9. An instructional blackboard with a sliding cleaning mechanism, according to claim 8, wherein: a valve (405) is arranged on the cleaning pipeline (403), a water pump (402) is arranged at the bottom of the water tank (401), and the water pump (402) is connected with the cleaning pipeline (403).

10. An instructional blackboard with a sliding cleaning mechanism, according to claim 4, wherein: the height dimension of the roller brush (305) and the sponge eraser (306) is kept consistent, and the height dimension of the sponge eraser (306) is also kept consistent with that of the blackboard (101).