阅读说明：本技术 一种无粉尘自动擦黑板装置 (Automatic blackboard erasing device without dust ) 是由 纪潇洋 余立洋 闫辰曦 肖彦伯 张宥仁 于 2019-10-28 设计创作，主要内容包括：一种无粉尘自动擦黑板装置,包括传动部分、执行部分与控制部分。所述传动部分包括传动链、承重轨道,承重轮；所述执行部分包括支撑杆、执行板和润湿装置；所述控制部分包括控制板、电机1、电机2、压力传感器和限位开关。本发明的有益效果是实现无粉尘操作,擦黑板效率提高,单次擦过后即可实现黑板清洁；可自动运行,对身高要求降低,干燥清洁介质和吸水介质均可拆装,不仅方便更换而且洁净程度高。(A dust-free automatic blackboard erasing device comprises a transmission part, an execution part and a control part. The transmission part comprises a transmission chain, a bearing rail and a bearing wheel; the executing part comprises a supporting rod, an executing plate and a wetting device; the control part comprises a control panel, a motor 1, a motor 2, a pressure sensor and a limit switch. The invention has the advantages that the dust-free operation is realized, the blackboard erasing efficiency is improved, and the blackboard can be cleaned after being erased once; but automatic operation reduces to the height requirement, and dry clean medium and absorbent media all can the dismouting, not only convenient change but also clean degree is high.)

1. A dust-free automatic blackboard erasing device comprises a transmission part, an execution part and a control part. The transmission part comprises a transmission chain, a bearing rail and a bearing wheel; the executing part comprises a supporting rod, an executing plate and a wetting device; the control part comprises a control panel, a motor 1, a motor 2, a pressure sensor and a limit switch. The bearing rail is horizontally arranged and is in a step U shape, the bearing wheels are three-way distribution wheels suitable for the bearing rail, and the bearing rail can limit the bearing wheels to reciprocate in one direction without shaking or falling from the bearing rail; the bearing wheels are connected with the transmission chain and roll under the driving of the transmission chain, the bearing wheels are installed at two ends of the supporting rod, the supporting rod is provided with a gear and a motor 2, and the motor 2 can drive the gear to rotate; a rack matched with the gear is fixedly arranged on the back (B side) of the execution plate; the rack is fixedly arranged on a force dividing rod on the back (B side) of the execution plate, and the force dividing rod can uniformly disperse the pressure from the rack; a buffer medium with a certain thickness is fixedly adhered to the rear end of the front surface (A surface) of the execution plate, and a detachable dry cleaning medium is arranged on the buffer medium; the front end of the execution plate is provided with a clamping groove, and a wetting device is arranged in the clamping groove; the wetting device is divided into two spaces, namely a water storage tank with a wide upper part and a narrow lower part and a detachable water absorbing medium with a narrow upper part and a wide lower part, wherein the water storage tank is arranged on one side far away from the blackboard, and the water absorbing medium is arranged on one side close to the blackboard and is parallel to the dry cleaning medium; the water storage tank is closed, a small water bucket is connected above the water storage tank through a water pipe 1, the water bucket is transparent or semitransparent, and the water bucket is connected with a faucet through a water pipe 2; the connecting part of the water storage tank and the water absorbing medium is provided with a plurality of tiny micropores; the water absorbing medium can absorb water in the water storage tank to keep the water storage tank in a wet state. The pressure sensors are arranged on the blackboard and are positioned right below the middle of the execution plate, and the two limit switches are respectively arranged on the walls at the two ends of the blackboard.

2. The dust-free automatic blackboard erasing device according to claim 1, wherein: the drive chain may be a belt drive, a chain drive or a linear guide drive.

3. The dust-free automatic blackboard erasing device according to claim 1, wherein: the bearing rail is horizontally arranged and is in a step U shape, the bearing wheels are three-way distribution wheels suitable for the bearing rail, and the bearing rail can control the bearing wheels to reciprocate in one direction without shaking or falling from the bearing rail.

4. The dust-free automatic blackboard erasing device according to claim 1, wherein: the water storage tank is closely contacted with the water absorbing medium and clamped in the clamping groove, and the water absorbing medium can absorb water from the water storage tank through the tiny micropores.

5. The dust-free automatic blackboard erasing device according to claim 1, wherein: the water absorbing medium may be sponge, cotton cloth, etc.

6. The dust-free automatic blackboard erasing device according to claim 1, wherein: the water absorbing medium is kept parallel to the dry cleaning medium and at the same level relative to the surface of the blackboard.

7. The dust-free automatic blackboard erasing device according to claim 1, wherein: the bucket is installed above the water storage tank, the height difference between the bucket and the water storage tank is not more than 20 centimeters, the bucket is a small bucket, the volume of the bucket is about 10-20 times that of the water storage tank, and the reason for doing so is that the gravitational potential energy of water injected into the water storage tank by the bucket is small, so that the water absorbing medium is not excessively humid.

8. The dust-free automatic blackboard erasing device according to claim 1, wherein: the number of the fine micropores is 5-10.

9. The dust-free automatic blackboard erasing device according to claim 1, wherein: the water storage tank and the water absorbing medium are respectively wide at the top and narrow at the bottom, and the water storage tank and the water absorbing medium are respectively narrow at the top and wide at the bottom, so that the pressure of each fine micropore is basically equal.

Technical Field

The invention relates to the field of electromechanical control, environmental protection and life, in particular to a dust-free automatic blackboard erasing device.

Background

In teaching, a teacher needs to write characters on a blackboard frequently and the characters are erased by the teacher or students in class or after class. When the blackboard is erased, a lot of chalk dust flies around, and the chalk dust can be greatly sucked by teachers and front-row students, so that the body health is influenced. When the blackboard eraser is used for erasing the blackboard, due to the size limitation of the blackboard eraser, the whole blackboard can be erased only by reciprocating erasing of people, and the working efficiency is low. The task can be completed by means of tools such as a stool for the crowd with low height, so that the automatic blackboard erasing device which is free of dust, high in working efficiency and capable of being operated by any crowd is urgently needed.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a dust-free automatic blackboard erasing device which has the advantages of no dust transmission, high working efficiency and strong operability.

In order to achieve the purpose, the invention adopts the technical scheme that:

a dust-free automatic blackboard erasing device comprises a transmission part, an execution part and a control part. The transmission part comprises a transmission chain, a bearing rail and a bearing wheel; the executing part comprises a supporting rod, an executing plate and a wetting device; the control part comprises a control panel, a motor 1, a motor 2, a pressure sensor and a limit switch.

The bearing rail is horizontally arranged and is in a step U shape, the bearing wheels are three-way distribution wheels suitable for the bearing rail, and the bearing rail can limit the bearing wheels to reciprocate in a single direction without shaking or falling from the bearing rail.

And furthermore, the bearing wheels are connected with the transmission chain and roll under the driving of the transmission chain, the bearing wheels are installed at two ends of the supporting rod, the supporting rod is provided with a gear and a motor 2, and the motor 2 can drive the gear to rotate.

Furthermore, a rack matched with the gear is fixedly arranged on the back (B side) of the execution plate; the rack is fixedly arranged on the force dividing rod on the back (B surface) of the execution plate.

The force dividing rod can uniformly disperse the pressure from the rack; the rear end of the front surface (A surface) of the execution plate is fixedly adhered with a buffer medium with a certain thickness, and the buffer medium is provided with a detachable dry cleaning medium.

Furthermore, a clamping groove is formed in the front end of the execution plate, and a wetting device is installed in the clamping groove; the wetting device is divided into two spaces, namely a water storage tank with a wide upper part and a narrow lower part and a water absorbing medium which is detachable and arranged with a narrow upper part and a wide lower part, wherein the water storage tank is arranged on one side far away from the blackboard, and the water absorbing medium is arranged on one side close to the blackboard and is parallel to the dry cleaning medium.

Furthermore, the water storage tank is closed, a small water bucket is connected above the water storage tank through a water pipe 1, the water bucket is transparent or semitransparent, and the water bucket is connected with a faucet through a water pipe 2; the connecting part of the water storage tank and the water absorbing medium is provided with a plurality of tiny micropores; the water absorbing medium can absorb water in the water storage tank to keep the water storage tank in a wet state.

The pressure sensors are arranged on the blackboard and are positioned right below the middle of the execution plate, and the two limit switches are respectively arranged on the walls at the two ends of the blackboard. When the water dispenser is used, the water faucet is opened to fill water into the water barrel, and the water dispenser stops after water above 3/4 is filled. Because the bucket is arranged above the water storage tank, the water storage tank is filled under the action of gravity, and the water absorbing medium absorbs water and keeps the water in a moist state.

Further, the switch is turned on, the motor 2 drives the rack through the gear to drive the execution plate to move towards the direction close to the blackboard, when the buffer medium on the front surface of the execution plate touches the pressure sensor and reaches a set threshold value, the control plate controls the motor 2 to stop, and the execution plate is tightly attached to the blackboard at the moment; when the threshold value is reached, the control panel controls the motor 1 to rotate, the bearing wheel rolls in the bearing track under the driving of the transmission chain, the execution plate is driven to horizontally move, and under the combined action of the water absorbing medium and the dry cleaning medium on the front face of the execution plate, the blackboard is cleaned up.

Still further, when the execution board moves to the other side (right side) of the blackboard, the execution board touches a limit switch, the control board receives an electric signal to control the motor 1 to stop rotating, then the control board controls the motor 1 and the motor 2 to rotate reversely, so that the execution board moves towards the direction far away from the blackboard while returning, the motor 2 stops rotating when returning to the initial position, when the execution board touches the limit switch on the left side, the motor 1 stops rotating, then rotates forwards and returns to the initial position, and at the moment, a working cycle is completed.

Compared with the prior art, the invention has the following advantages:

(1) the dust-free operation is realized, the blackboard erasing efficiency is improved, and the blackboard can be cleaned after being erased once;

(2) the automatic operation can be realized, the requirement on the height is reduced, and the functions of storing water and starting the device can be realized;

(3) the dry cleaning medium and the water absorbing medium can be disassembled and assembled, so that the replacement is convenient and the cleaning degree is high.

Drawings

FIG. 1 is a top view of the overall structure of the inventive assembly;

FIG. 2 is a perspective view of the overall structure of the assembly of the present invention;

FIG. 3 is a schematic view of the transmission portion;

FIG. 4 is an enlarged view of a portion of the load bearing rail in cooperation with the load bearing wheel;

FIG. 5 is a schematic diagram of an implementation;

FIG. 6 is a schematic view of a wetting apparatus;

FIG. 7 is a schematic view of a force rod;

the attached drawings indicate the following:

1-a motor 1, 2-a transmission chain, 3-a bearing track, 4-a bearing wheel,

5-supporting rod, 6-executing plate, 7-wetting device, 8-motor 2,

9-pressure sensor, 10-limit switch, 11-gear, 12-rack,

13-force-dividing rod, 14-buffer medium, 15-dry cleaning medium 16-clamping groove,

17-a water storage tank, 18-a water absorption medium, 19-a bucket, 20-a water pipe 1,

21-water pipe 2, 22-water tap.

Detailed Description

The drawings in the embodiments of the present invention will be clearly and completely described to facilitate understanding of technical solutions in the embodiments of the present invention. The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.

As shown in fig. 1-7, a stair transport device, a dust-free automatic blackboard erasing device, comprises a transmission part, an execution part and a control part. The transmission part comprises a 2-transmission chain, a 3-bearing track and a 4-bearing wheel; the execution part comprises a 5-supporting rod, a 6-execution plate and a 7-wetting device; the control part comprises a control board, 1-motor 1, 8-motor 2 and 9-pressure sensor. The bearing rail is horizontally arranged and is in a step U shape, the 4-bearing wheel is a three-way distribution wheel suitable for the bearing rail, and the bearing rail can limit the 4-bearing wheel to reciprocate in one direction without shaking or falling off the 4-bearing wheel from the bearing rail; the 4-bearing wheel is connected with the 2-transmission chain and rolls under the drive of the 2-transmission chain, the 4-bearing wheel is arranged at two ends of a 5-supporting rod, the 5-supporting rod is provided with an 11-gear and an 8-motor 2, and the 8-motor 2 can drive the 11-gear to rotate; the back (B side) of the 6-execution plate is fixedly provided with a 12-rack matched with the 11-gear; the 12-rack is fixedly arranged on a force dividing rod on the back (B side) of the 6-execution plate, and the 13-force dividing rod can uniformly disperse the pressure from the 12-rack; 14-buffer media with certain thickness are fixedly adhered to the rear end of the front surface (A surface) of the 6-execution plate, and the 14-buffer media are provided with detachable 15-dry cleaning media; the front end of the 6-execution plate is provided with a 16-clamping groove, and a 7-wetting device is arranged in the 16-clamping groove; the 7-wetting device is divided into two spaces, namely a 17-water storage tank with a wide upper part and a narrow lower part and a detachable 18-water absorbing medium with a narrow upper part and a wide lower part, wherein the 17-water storage tank is arranged at one side far away from the blackboard, and the 18-water absorbing medium is arranged at one side close to the blackboard and is parallel to the 15-dry cleaning medium; the 17-water storage tank is closed, a small 19-water bucket is connected above the 17-water storage tank through a water pipe 1, the 19-water bucket is transparent or semitransparent, and the 19-water bucket is connected with a 22-water faucet through a 21-water pipe 2; the connecting part of the 17-water storage tank and the 18-water absorbing medium is provided with a plurality of fine micropores; the 18-water absorbing medium can suck the water in the 17-water storage tank to keep the water in a wet state. The 9-pressure sensors are arranged on the blackboard and are positioned right below the middle of the 6-execution plate, and the number of the 10-limit switches is two, and the 10-limit switches are respectively arranged on the walls at the two ends of the blackboard.

When in use, the 22-water tap is opened to fill water into the 19-water bucket, and the water is stopped after the water is filled to above 3/4. Since the 19-bucket is installed above the 17-water storage tank, the 17-water storage tank is filled under the action of gravity, and the 18-water absorption medium absorbs water and keeps the 17-water storage tank in a wet state. The switch is turned on, the 8-motor 2 drives the 6-execution plate to move towards the direction close to the blackboard through the 11-gear drive 12-rack, when the 14-buffer medium on the front surface of the 6-execution plate touches the 9-pressure sensor and reaches a set threshold value, the control plate controls the 8-motor 2 to stop, and at the moment, the 6-execution plate is tightly attached to the blackboard; when the threshold value is reached, the control board controls the 1-motor 1 to rotate, the 4-bearing wheel is driven by the 2-transmission chain to roll in the bearing track, the 6-execution board is further driven to horizontally move, and under the combined action of the 18-water absorbing medium and the 15-dry cleaning medium on the front surface of the 6-execution board, the blackboard is cleaned; when the 6-execution plate runs to the other side (right side) of the blackboard, the 6-execution plate touches a 10-limit switch, the control plate receives an electric signal to control the 1-motor 1 to stop rotating, then the control plate controls the 1-motor 1 and the 8-motor 2 to rotate reversely, the 1-motor 1 moves towards the direction far away from the blackboard while the execution plate returns, the 8-motor 2 stops rotating when the motor 2 returns to the initial position, when the 6-execution plate touches the 10-limit switch on the left side, the 1-motor 1 stops rotating, then rotates forwards and returns to the initial position, and at this moment, a work cycle is completed.

The first embodiment is as follows: blackboard erasing function when water barrel is empty

And (4) opening a 22-water faucet to fill water into the 19-water barrel, and stopping after filling water above 3/4. Since the 19-bucket is installed above the 17-water storage tank, the 17-water storage tank is filled under the action of gravity, and the 18-water absorption medium absorbs water and keeps the 17-water storage tank in a wet state. The switch is turned on, the 8-motor 2 drives the 6-execution plate to move towards the direction close to the blackboard through the 11-gear drive 12-rack, when the 14-buffer medium on the front surface of the 6-execution plate touches the 9-pressure sensor and reaches a set threshold value, the control plate controls the 8-motor 2 to stop, and at the moment, the 6-execution plate is tightly attached to the blackboard; when the threshold value is reached, controlling the 1-plate to control the motor 1 to rotate, driving the 4-bearing wheel to roll in the 3-bearing track under the drive of the 2-transmission chain, further driving the 6-execution plate to horizontally move, and cleaning the blackboard under the combined action of the 18-water absorbing medium on the front surface of the 6-execution plate and the 15-dry cleaning medium; 6-when the execution plate runs to the other side (right side) of the blackboard, the 6-execution plate touches a 10-limit switch, the control plate receives an electric signal to control the 1-motor 1 to stop rotating, then the control plate controls the 1-motor 1 and the 8-motor 2 to rotate reversely, the 6-execution plate moves towards the direction far away from the blackboard while returning, when the 8-motor 2 returns to the initial position, the 6-execution plate stops rotating, when the 6-execution plate touches the 10-limit switch on the left side, the 1-motor 1 stops rotating, then the plate rotates forwards and returns to the initial position, and at this moment, a work cycle is completed.

Example two: when water exists in the bucket, the function of wiping the blackboard is realized

When water is present in the bucket, the 18-water absorbing medium absorbs the water and keeps itself in a wet state. The switch is turned on, the 8-motor 2 drives the 6-execution plate to move towards the direction close to the blackboard through the 11-gear drive 12-rack, when the 14-buffer medium on the front surface of the 6-execution plate touches the 9-pressure sensor and reaches a set threshold value, the control plate controls the 8-motor 2 to stop, and at the moment, the 6-execution plate is tightly attached to the blackboard; when the threshold value is reached, the control board controls the 1-motor 1 to rotate, the 4-bearing wheel is driven by the 2-transmission chain to roll in the 3-bearing track, the 6-execution board is further driven to horizontally move, and under the combined action of the 18-water absorption medium and the 14-dry cleaning medium on the front face of the 6-execution board, the blackboard is cleaned; when the 6-execution board runs to the other side (right side) of the blackboard, the 6-execution board touches a 10-limit switch, the control board receives an electric signal 1, the motor 1 is controlled to stop rotating, then the control board controls the 1-motor 1 and the 8-motor 2 to rotate reversely, the 6-execution board moves towards the direction far away from the blackboard while returning, the 8-motor 2 stops rotating when returning to the initial position, when the 6-execution board touches the left limit switch, the motor 1-1 stops rotating, then rotates forwards and returns to the initial position, and at this moment, a work cycle is completed.

It should be understood that the above-described examples of the present invention are illustrative only for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.