CN112693253A

CN112693253A - Multifunctional device

Info

Publication number: CN112693253A
Application number: CN202011575541.9A
Authority: CN
Inventors: 张晓莉; 张玉华; 张瑾
Original assignee: Chengdu Lanteng Technology Co ltd
Current assignee: Chengdu Lanteng Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-23
Anticipated expiration: 2040-12-28
Also published as: CN112693253B

Abstract

The invention relates to the technical field of dust cleaning, in particular to a multifunctional device. The specific technical scheme is as follows: a multifunctional device comprises a cantilever fixed on an upright post and an erasing device fixed on the cantilever, wherein the erasing device comprises a shell with an opening on one side and an erasing mechanism rotationally arranged in the shell, the erasing mechanism comprises an ash deposition box and a telescopic brush head arranged on one side of the ash deposition box, which is provided with the brush head, is provided with a plurality of negative pressure holes, and the other side of the ash deposition box is rotationally connected with the shell through a driving pipe communicated with the ash deposition box; one end of the driving pipe extends out of the shell and is connected with a negative pressure pumping device. The invention solves the problem that chalk dust is sucked into a human body in the blackboard erasing process in the prior art.

Description

Multifunctional device

Technical Field

The invention relates to the technical field of dust cleaning, in particular to a multifunctional device.

Background

The blackboard eraser is a common tool in teaching equipment and is generally used for erasing chalk characters on a blackboard, but a large amount of chalk dust appears in the process of erasing the blackboard, the chalk dust is easy to be sucked into a body by people who erase the blackboard and nearby people due to small particles of the chalk dust, and the human body can be possibly affected by long-time suction of the chalk dust, for example, lung lesion and the like are caused. Moreover, the chalk dust falls on the ground, so that the chalk dust is not easy to clean, and the chalk dust can be lifted up in the cleaning process and is sucked again. Therefore, an intelligent blackboard erasing device is urgently needed to be designed, so that chalk characters on the blackboard can be automatically erased without manual operation; the chalk dust can not fall everywhere even if the chalk dust is manually operated, and the chalk dust is absorbed by people in the falling process. Further, the chalk dust does not fall to the ground during wiping and is sucked again during cleaning.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a multifunctional device, which solves the problem that chalk dust is sucked into a human body in the blackboard erasing process in the prior art.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention discloses a multifunctional device, which comprises a cantilever fixed on an upright post and an erasing device fixed on the cantilever, wherein the erasing device comprises a shell with an opening on one side and an erasing mechanism rotationally arranged in the shell, the erasing mechanism comprises an ash deposition box and a telescopic brush head arranged on one side of the ash deposition box, one side of the ash deposition box provided with the brush head is provided with a plurality of negative pressure holes, and the other side of the ash deposition box is rotationally connected with the shell through a driving pipe communicated with the ash deposition box; one end of the driving pipe extends out of the shell and is connected with a negative pressure pumping device.

Preferably, the limiting plate is circumferentially arranged on the ash deposition box, an annular groove matched with the limiting plate is formed in the inner wall of the shell, and a first motor for driving the erasing mechanism to rotate is arranged on the shell.

Preferably, the brush head is curved and provided with a plurality of brush heads, the brush head extends from the center of the side face of the dust box to the edge, and the brush head extends out of the opening of the shell.

Preferably, the brush head includes fixed plate and fly leaf, the top of fly leaf is provided with the brush hair, the brush hair stretches out outside the uncovered of casing, the bottom surface of fly leaf is provided with T type groove, the top surface of fixed plate transversely is provided with spacing, spacing be located T type inslot, with the step face in T type groove offsets, be provided with the elastic component between the interior top surface in T type groove and the top surface of spacing.

Preferably, the other side of the shell is provided with a connector, and the other side of the connector corresponding to the shell is connected with the cantilever through a universal joint; the connecting head is provided with a transition cavity communicated with the driving pipe, the outlet of the transition cavity is communicated with a negative pressure pipe, and the other end of the negative pressure pipe is communicated with the negative pressure pumping device.

Preferably, the cantilever includes the fixed arm and can dismantle the digging arm of being connected with the fixed arm, the fixed arm articulates on the lateral wall of stand, the digging arm passes through the universal joint is connected with the connector, articulated cylinder seat and the output lever of first cylinder respectively between fixed arm and the stand.

Preferably, a plug is fixed on the end face of the other end of the movable arm, a cylindrical groove matched with the plug is formed in the end face of the fixed arm, at least one sliding groove is formed in the inner wall of the cylindrical groove along the length direction of the cylindrical groove, and a protruding strip matched with the sliding groove is formed in the circumferential direction of the plug.

Preferably, a spherical groove is formed in the side wall of the cylindrical groove, a cylindrical groove is formed in the side wall of the convex strip, a limiting block is arranged in the cylindrical groove, and the limiting block and the cylindrical groove are fixed through an elastic piece; when the plug connector is completely inserted into the cylindrical groove, the limiting block is positioned in the spherical groove.

Preferably, be provided with fixed establishment between digging arm and the connector, fixed establishment includes that one end fixes the fixed strip on the connector lateral wall, the fixed strip is the arc, be provided with the bar hole along its length direction on the fixed strip, be provided with spacing post on the digging arm, spacing post passes the bar hole makes through the nut spacing post and fixed strip are fixed.

Preferably, a fixing mechanism is arranged between the movable arm and the connector, the fixing mechanism comprises a fixing strip, one end of the fixing strip is fixed on the side wall of the connector, the fixing strip is arc-shaped, a strip-shaped hole is formed in the fixing strip along the length direction of the fixing strip, the inner wall of the strip-shaped hole is wavy, and wave crests, and wave troughs on two sides of the strip-shaped hole are respectively and symmetrically arranged; the movable arm is provided with a limiting column, the limiting column penetrates through the strip-shaped hole, and the side wall of the limiting column is symmetrically provided with elastic bulges; the total diameter of the limiting column and the two elastic bulges is smaller than the diameter between symmetrical wave troughs and larger than the diameter between symmetrical wave crests, and the limiting column moves in the strip-shaped hole by extruding the elastic bulges.

The invention has the following beneficial effects:

according to the invention, the dust box is arranged in the shell, the telescopic brush head is arranged on the dust box, the dust box is communicated with the dust box through the negative pressure pipe, and the dust box is driven to rotate through the motor; meanwhile, the negative pressure suction device is connected to the negative pressure pipe, so that the chalk dust is sucked into the dust box and sucked out and collected through the negative pressure pipe in the process of erasing the blackboard. Therefore, the chalk dust is effectively prevented from being sucked into a human body in the process of erasing the blackboard, and the physical health of people is ensured to the maximum extent.

Drawings

FIG. 1 is a schematic view of the present invention in its entirety with a base and a platform;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a view taken along line A-A of FIG. 2;

FIG. 4 is a view of the erasing mechanism of FIG. 2 in the direction A;

FIG. 5 is a schematic view of the construction of the brush head;

FIG. 6 is a schematic view of the structure of the column, base and abutment;

FIG. 7 is an enlarged view of a portion A of FIG. 6;

FIG. 8 is a schematic view of the structure of the arc-shaped through hole on the base platform;

FIG. 9 is a schematic view of a pressing column;

FIG. 10 is a schematic view of a substrate;

FIG. 11 is a schematic view of a structure in which support pillars are disposed on a substrate;

FIG. 12 is a perspective view of a substrate;

FIG. 13 is a schematic structural view of a jacking mechanism;

in the figure: the device comprises a vertical column 1, a shell 2, a first motor 3, an ash deposition box 4, a negative pressure hole 5, a driving pipe 6, a negative pressure pumping device 7, a limiting plate 8, a fixing plate 9, a movable plate 10, bristles 11, a T-shaped groove 12, a limiting strip 13, a connector 14, a transition cavity 15, a negative pressure pipe 16, a fixing arm 17, a movable arm 18, a first air cylinder 19, a fixing strip 20, a base 21, a second motor 22, a base 23, a channel 24, a collection cavity 25, a treatment cavity 26, an arc-shaped through hole 27, a supporting plate 28, a second air cylinder 29, a pressing column 30, a pressing hole 31, a fixing column 32, a base plate 33, a supporting column 34, a first through hole 35, a groove 36, a second through hole 37, a supporting ring 38, a jacking column 39, a connecting rod 40, a plug 41, a sliding groove 42, a limiting block 43, a limiting groove 44, a vibrator 45, a.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless otherwise indicated, the technical means used in the examples are conventional means well known to those skilled in the art.

Referring to fig. 1-13, the invention discloses a multifunctional device, comprising a cantilever fixed on an upright post 1 and an erasing device fixed on the cantilever, wherein the erasing device comprises a shell 2 with an opening at one side and an erasing mechanism rotatably arranged in the shell 2, the shell 2 is provided with a first motor 3 for driving the erasing mechanism to rotate, the erasing mechanism comprises an ash deposition box 4 and a telescopic brush head arranged on the side surface of the ash deposition box 4, one side of the ash deposition box 4 provided with the brush head is provided with a plurality of negative pressure holes 5, and the other side of the ash deposition box 4 is rotatably connected with the shell 2 through a driving pipe 6 communicated with the ash deposition box 4; one end of the driving tube 6 extends out of the shell 2 and is connected with a negative pressure pumping device 7, and the negative pressure pumping device 7 is an existing device, such as a negative pressure generator. It should be noted that: the driving pipe 6 is rotatably connected with the shell 2 through a bearing, a grooved pulley is fixed on the periphery of the driving pipe 6, a driving wheel is fixed on an output shaft of the first motor 3, and the driving wheel and the grooved pulley are connected through a belt, so that the first motor 3 drives the erasing mechanism to rotate. Of course, a transmission gear can be fixed on the periphery of the driving tube 6, a driving gear is fixed on an output shaft of the first motor 3, and the transmission gear is meshed with the driving gear, so that the first motor 3 drives the erasing mechanism to rotate, and erasing of chalk characters is achieved. Of course, the chalk characters on the blackboard can be erased directly by a manual erasing mode without arranging the first motor 3, and the erased chalk dust is directly sucked away by the negative pressure sucking device 7. And the present invention preferably provides a first electric machine 3.

Further, in order to increase the stability of the erasing mechanism in the rotating process, the annular limiting plate 8 is circumferentially arranged on the dust box 4, and an annular groove matched with the limiting plate 8 is formed in the inner wall of the shell 2, so that the limiting plate 8 rotates in the annular groove, and the dust box 4 is prevented from inclining. Of course, the limiting plate 8 may be annular, or a plurality of fan-shaped plates may be fixed to the circumference of the dust box 4, and may be set according to actual requirements. The limiting plate 8 is preferably arranged in a ring shape, so that the chalk dust can be effectively prevented from entering the shell 2 through a gap between the dust box 4 and the shell 2. Of course, even if the chalk dust enters the casing 2, at least one dust discharging hole may be formed at a corner of the bottom of the casing 2 to discharge the chalk dust entering the casing 2, thereby preventing the chalk dust from accumulating in the casing 2.

Furthermore, in order to increase the contact surface of the brush head with the blackboard when the brush head is used for wiping the blackboard, the brush head is arranged into a curve shape and is provided with a plurality of brush heads, the brush heads extend from the center of the side surface of the dust box 4 to the edge, and the brush heads extend out of the opening of the shell 2. The shape shown in fig. 4 is an S-shaped curve, but the shape is not limited to this shape, and other shapes are possible. But to avoid damaging the blackboard by contacting the brush head too tightly with the blackboard. Therefore, the brush head is arranged to be telescopic, so that the brush head and the blackboard can be erased within a certain distance range. The method specifically comprises the following steps: the brush head includes fixed plate 9 and movable plate 10, fixed plate 9 is fixed on the side of deposition box 4, the top of movable plate 10 is provided with brush hair 11, brush hair 11 stretches out outside the uncovered of casing 2, the bottom surface of movable plate 10 is provided with T type groove 12, the top surface of fixed plate 9 transversely is provided with spacing 13, when movable plate 10 and fixed plate 9 are not compressed, spacing 13 is located T type groove 12, offset with the step face of T type groove 12, be provided with the elastic component between the interior top surface of T type groove 12 and the top surface of spacing 13, the elastic component can be the spring, reed etc.. In order to prevent the chalk dust from falling from the gap between the brush heads or from the gap between the brush hairs 11 during the erasing process of the blackboard, so that the chalk dust can float in the air for a short time and be sucked into the human body, a ring of rubber sleeve 48 is arranged on the end surface of the opening of the shell 2, and the brush hairs 11 partially extend out of the rubber sleeve 48. When the brush head is used, the movable plate 10 and the fixed plate 9 are compressed while the shell 2 is pressed, so that the rubber sleeve 48 is attached to the blackboard, the brush head performs erasing work in an area formed between the blackboard and the rubber sleeve 48, and the dropped chalk dust is sucked into the dust box 4 through the negative pressure hole 5 in the rubber sleeve 48; the rubber sleeve 48 is flexible, so that the blackboard cannot be damaged.

Further, in order to enable the casing 2 and the cantilever to rotate and enable the brush head and the blackboard to form different angles, so that the brush head and the blackboard can still perform erasing work under different angles, a connector 14 is arranged on the other side of the casing 2 (the side where the casing 2 is connected with the cantilever), and the other side, corresponding to the casing 2, of the connector 14 is connected with the cantilever through a universal joint; the connector 14 is provided with a transition cavity 15 communicated with the driving pipe 6, an outlet of the transition cavity 15 is communicated with a negative pressure pipe 16, the other end of the negative pressure pipe 16 is communicated with the negative pressure pumping device 7, and the length of the negative pressure pipe 16 is greater than that of the cantilever and is specifically set according to actual conditions. It should be understood that: the specific structure of the universal joint is as follows: one end of the connector 14, one end of the cantilever and one end of the connector 14 are both in a connection fork structure, then the cross shaft is used for connecting the cantilever and the connector 14, and the cross shaft, the connector 14 and the cantilever are connected through the bearing, so that the shell 2 can rotate in a certain range in the vertical and horizontal directions, and the flexibility of the erasing device in the using process is increased.

Furthermore, in order to enable the cantilever to move in the up-and-down direction, the working range of the erasing device in use is increased, and the device does not need to be moved frequently. The cantilever and the upright post 1 are rotatably connected, namely a first cylinder 19 is arranged between the upright post 1 and the cantilever, and the first cylinder 19 is hinged (rotatably connected through a rotating shaft) with the cantilever and the upright post 1.

Furthermore, in order to facilitate the manual operation of the erasing device, the cantilever is provided with two sections, specifically: the cantilever comprises a fixed arm 17 and a movable arm 18 detachably connected with the fixed arm 17, the fixed arm 17 is hinged on the side wall of the upright post 1, a first cylinder 19 cylinder seat and an output rod are respectively hinged on the upright post 1 and the fixed arm 17, and the movable arm 18 is connected with the erasing device. Fixed arm 17 and movable arm 18 adopt the fixed mode of pegging graft to connect, specifically do: a plug-in connector 41 with a diameter smaller than that of the movable arm 18 is fixed on the end face of the other end of the movable arm 18, a cylindrical groove matched with the plug-in connector 41 is arranged on the end face of the fixed arm 17, at least one sliding groove 42 is arranged on the inner wall of the cylindrical groove along the length direction, and a convex strip 49 matched with the sliding groove 42 is arranged on the circumferential direction of the plug-in connector 41. When the plug 41 is inserted into the cylindrical groove, the protrusion 49 is aligned with the sliding groove 42, and the plug 41 is inserted into the cylindrical groove. At this time, in order to increase the stability between the plug 41 and the cylindrical groove, a spherical groove is formed on the side wall of the cylindrical groove, a cylindrical groove is formed on the side wall of the protruding strip 49, a stopper 43 is arranged in the cylindrical groove, and the stopper 43 and the cylindrical groove are fixed by elastic members such as a spring, a reed and the like. When the plug 41 is fully inserted into the cylindrical groove, the stopper 43 is located in the spherical groove, thereby fixing the plug 41 to the cylindrical groove. The end surface of the stopper 43 is preferably provided as a spherical surface, and is adapted to the spherical groove, so that the stopper 43 can be easily inserted into and withdrawn from the spherical groove. Of course, the limiting block 43 and the spherical groove can be provided in plurality according to actual needs. When the erasing device is needed to be used manually, the movable arm 18 is only required to be pulled out of the fixed arm 17, and the length of the negative pressure tube 16 is larger than that of the cantilever, so that the erasing device can move within a certain length range, and the use of the negative pressure pumping device 7 is not influenced.

Further, in order to avoid the erasing device drooping due to gravity, and to avoid the erasing device being inconvenient to use, a fixing mechanism is arranged between the movable arm 18 and the connector 14, and the fixing mechanism has two setting modes, one of which is: fixing mechanism includes that one end fixes the fixed strip 20 on the 14 lateral walls of connector, and fixed strip 20 is the arc, is provided with the bar hole along its length direction on the fixed strip 20, and the shape in bar hole is the same with the shape of fixed strip 20, is provided with spacing post on the digging arm 18, and spacing post passes the bar hole and makes spacing post and fixed strip 20 fixed through the nut. It should be understood that: the limiting column is provided with threads, so that the limiting column is matched with the nut to fix the limiting column and the fixing strip 20. In this operation, the nut needs to be screwed down to fix the fixing column and the fixing strip 20 after the erasing device (the casing 2) is rotated to a proper angle each time; in the process of adjusting the angle of the shell 2, the limiting column moves in the strip-shaped hole all the time.

Another setting mode of the fixing mechanism is as follows: a fixing mechanism is arranged between the movable arm 18 and the connector 14, the fixing mechanism comprises a fixing strip 20, one end of the fixing strip 20 is fixed on the side wall of the connector 14, the fixing strip 20 is arc-shaped, a strip-shaped hole is formed in the fixing strip 20 along the length direction of the fixing strip, the shape of the strip-shaped hole is the same as that of the fixing strip 20, the inner wall of the strip-shaped hole is wavy, and wave crests and wave troughs as well as wave troughs and wave troughs on two sides of the strip-shaped hole are respectively and symmetrically; the movable arm 18 is provided with a limiting post which passes through the strip-shaped hole, and the side wall of the limiting post is symmetrically provided with elastic bulges; the axes of the limiting column and the two elastic bulges are on the same straight line, and the total diameter of the limiting column and the two elastic bulges is smaller than the diameter between the symmetrical wave troughs and larger than the diameter between the symmetrical wave crests. When spacing post removed in the bar downthehole, when the position between the symmetrical crest of spacing post process, can cause the extrusion to elastic bulge, pass through this position until spacing post, finally realize spacing post at the downthehole reciprocating motion of bar. Therefore, the elastic bulge is arranged to enable the limiting column to be located in the area formed by the two wave troughs in the strip-shaped hole, so that the limiting column cannot move randomly in the strip-shaped hole, and the erasing device cannot be kept in a stable state.

When the every single move angle that the device was erased in needs adjustment, only need rotate and erase the device, make it rotate round the universal joint, and spacing post then removes the position in the bar hole, specifically erase the device when rotating, the elastic bulge receives the extrusion and passes from the narrowest (distance between two symmetrical wave crests) position in bar hole to realize the removal of spacing post in the bar hole, and guarantee simultaneously to erase the stability of device after angle of adjustment. Of course, it is also noted that: the setting of the fixing mechanism affects the rotation of the erasing device in the left-right direction to some extent, but this does not affect the use of the erasing device. Since the engagement of the fixing bar 20 and the stopper post is not strictly screw-engaged, or there is a certain margin, the eraser can be rotated right and left within a small range.

The invention also discloses a dust treatment device, which is mainly used for better collecting and treating the chalk dust sucked into the dust box 4 and preventing the chalk dust from being sucked into a human body in the cleaning process. The bottom of the upright post 1 is connected with a base 21, the bottom surface of the base 21 is rotatably connected with a base table 23, and the base 21 is driven by a second motor 22; the shaft center of the upright post 1 is provided with a channel 24, the base 22 is internally provided with a collecting cavity 25 communicated with the channel 24, the base 23 is internally provided with a processing cavity 26 communicated with the collecting cavity 25, and one side of the base 23 is provided with a door capable of opening and closing, so that equipment in the processing cavity 26 can be conveniently taken and placed. It should be noted that: a rotating shaft is fixed at the center of the bottom of the base 21, and a groove matched with the rotating shaft is arranged at the center of the top of the base 23, and the rotating shaft is fixed in the groove through a bearing. Meanwhile, a driven gear 47 is sleeved on the circumferential direction of the base 21, the second motor 22 is fixed on the side wall of the base platform 23, and a driving gear on an output shaft of the second motor 22 is meshed with the driven gear 47, so that the second motor 22 drives the base 21 to rotate, and the specific rotating angle is set according to actual conditions.

In order to collect the chalk dust sucked by the negative pressure suction device 7, the negative pressure suction device 7 is arranged in the channel 24, and the negative pressure pipe 16 penetrates through the upright post 1 and is connected with the negative pressure suction device 7. The top of the channel 24 is communicated with a compressed air inlet of the negative pressure pumping device 7, the direction of an air outlet of the negative pressure pumping device 7 is downward, when compressed air is discharged through the air outlet, negative pressure generated in the negative pressure pipe 16 adsorbs chalk dust, so that the chalk dust enters the dust box 4 through the negative pressure hole 5, enters the channel 24 through the negative pressure pipe 16 and the negative pressure pumping device 7, enters the collecting cavity 25 along the channel 24, and finally enters the processing cavity 26. The method specifically comprises the following steps: a dust falling hole is provided at the bottom of the collecting chamber 25. In order to avoid the rotating shaft, the ash falling hole is obliquely arranged. An ash dropping pipe is connected to an outlet of the ash dropping hole, and the ash dropping pipe is inserted into an arc-shaped through hole 27 provided in the top surface of the base 23 and positioned above the processing device provided in the processing chamber 26. It should be noted that: the length of the ash falling pipe is less than or equal to the wall thickness of the top of the base table 23, so that the ash falling pipe is prevented from influencing the use of the processing device when the chalk ash is pressed. And the arc of the arc through hole 27 is an angle by which the base 21 can be rotated. The arc of the arc-shaped through hole 27 is conventionally set according to actual conditions.

In order to realize the lifting of the processing device, a supporting plate 28 is arranged at the bottom of the processing chamber 26, the processing device is detachably arranged on the supporting plate 28, a second air cylinder 29 is arranged at the bottom of the base platform 23, the output end of the second air cylinder 29 penetrates through the bottom of the base platform 23 and is fixed with the center of the supporting plate 28, and the supporting plate 28 and the processing device arranged on the supporting plate 28 are lifted by starting the second air cylinder 29. In order to ensure that the pressing hole 31 is still symmetrical with the fixed column 32 after the processing device (the pressing column 30) is moved, an arc-shaped baffle plate is arranged on the supporting plate 28, a gap of the arc-shaped baffle plate corresponds to the door, and when the pressing column 30 is fixed on the supporting plate 28, the inner wall of the arc-shaped baffle plate is attached to the outer side wall of the pressing column 30; in order to facilitate the handling of the pressing post 30 on the support plate 28, the central angle of the arc-shaped baffle is less than or equal to 180 °, preferably 180 °, so that the contact surface between the arc-shaped baffle and the pressing post 30 is larger. Meanwhile, at least one jack is arranged on the support plate 28 at the opening of the arc-shaped baffle, and a slip is arranged at the bottom of the pressing column 30. When the pressing post 30 is placed on the support plate 28 and engaged with the arc-shaped shutter, the insert is inserted into the insertion hole, thereby detachably fixing the pressing post 30 to the support plate 28.

Specifically, the method comprises the following steps: the processing device comprises a pressing column 30, a plurality of pressing holes 31 are formed in the pressing column 30 along the length direction of the pressing column, a supporting mechanism is arranged at the bottom of each pressing hole 31, fixing columns 32 corresponding to the pressing holes 31 are arranged at the top of the processing cavity 26, the pressing holes 31 and the fixing columns 32 are preferably symmetrically arranged, and the diameters of the fixing columns 32 are smaller than the diameters of the pressing holes 31. When the height of the chalk dust in the pressing hole 31 is accumulated to a certain degree, the vibrator 45 provided on the sidewall of the pressing cylinder 30 may be turned on to make the chalk dust in the pressing hole 31 more compact. Then, the second cylinder 29 is actuated to raise the pressing post 30 until the fixing post 32 is inserted into the pressing hole 31, thereby pressing and blocking the chalk dust in the pressing hole 31. In order to prevent the chalk dust falling through the dust falling tube from being accumulated on the top surface of the pressing post 30, the top surface of the pressing post 30 is formed in a concave surface which is downwardly concave, thereby facilitating the chalk dust to slide down into the pressing hole 31.

Further, in order to facilitate cleaning of the compacted chalk dust from the pressing hole 31, the supporting mechanism is detachably provided. After the chalk dust is completely pressed in the pressing hole 31, the supporting mechanism is detached, and the chalk column pressed by the chalk dust can be taken out.

The method specifically comprises the following steps: the supporting mechanism comprises a base plate 33 detachably fixed with the bottom of the pressing column 30, a supporting column 34 is fixed on the top surface of the base plate 33, and the supporting column 34 extends into the pressing hole 31 and is matched with the pressing hole 31. It can be understood that: the chalk dust is press-molded between the supporting posts 34 and the fixing posts 32 with the supporting posts 34 as bottoms, and the press-molded chalk posts are taken out by removing the base plate 33.

Furthermore, in order to take out the chalk columns in the pressing holes 31 without detaching the supporting mechanism, the base plate 33 is provided with first through holes 35 corresponding to the pressing holes 31, grooves 36 are communicated between the first through holes 35 at the center of the base plate 33 and the rest of the first through holes 35, the depth of each groove 36 is smaller than the height of the corresponding first through hole 35, the supporting columns 34 are provided with second through holes 37 communicated with the first through holes 35, the inner walls of the pressing holes 31 are provided with supporting rings 38 attached to the tops of the supporting columns 34, and the first through holes 35 and the second through holes 37 are internally provided with jacking mechanisms penetrating through the supporting rings 38. It should be noted that: the bottom of the pressing column 30 is provided with a limit groove 44, the substrate 33 is placed in the limit groove 44, and the height of the limit groove 44 is the same as the thickness of the substrate 33. In order to prevent the substrate 33 from falling from the position-limiting groove 44, magnets are disposed on both the bottom surface of the position-limiting groove 44 and the top surface of the substrate 33, and the magnets in the position-limiting groove 44 are symmetrical to the magnets on the substrate 33, so that the substrate 33 is fixed in the position-limiting groove 44.

The jacking mechanism comprises a T-shaped jacking column 39, the inner ring of the support ring 38 is a stepped hole, one end of the jacking column 39 penetrates through the support column 34, the transverse part of the jacking column abuts against the stepped surface of the stepped hole, the other end of the jacking column 39 is positioned in the first through hole 35, the jacking column 39 positioned at the center of the base plate 33 is fixed with the rest jacking columns 39 through a connecting rod 41, the connecting rod 40 is positioned in the groove 36, and the depth of the groove 36 is greater than the height of the connecting rod 41. Because the horizontal part of the jacking post 39 is abutted against the step surface of the stepped hole, the bottom of the jacking post 39 is just contacted with the top surface of the supporting plate 28 or suspended in the first through hole 35, and the invention is preferably as follows: the bottom surfaces of the lift pins 39 do not contact the top surface of the support plate 28. When the pressing column 30 is taken out from the processing cavity 26, the jacking mechanism moves towards the pressing direction only by pressing the jacking column 39 located at the center of the pressing column 30, so that the chalk column is ejected out of the pressing hole 31, and the operation is convenient and fast. The use of a jacking mechanism should be understood as: the lifting mechanism is mainly used for separating the chalk column from the inner wall of the pressing hole 31, and the chalk column can be poured out only by inclining the pressing column 30.

Further, the method comprises the following steps: in order to prevent the chalk dust falling from the dust falling tube from falling into the gap between the pressing column 30 and the inner wall of the base 23, a dust cover 46 is provided on the inner wall of the base 23 above the pressing column 30, and the dust cover 46 is funnel-shaped, and has a diameter gradually decreasing from top to bottom, and a minimum diameter larger than the diameter of the pressing column 30. Meanwhile, a circle of soft rubber sleeve is arranged on the edge of the minimum diameter of the dust cover 46, the diameter of the soft rubber sleeve is smaller than that of the pressing column 30, the soft rubber sleeve is located above the pressing column 30, the soft rubber sleeve has certain ductility, and when the pressing column 30 rises, the soft rubber sleeve can be stretched to enable the pressing column 30 to rise, so that the dust cover 46 is prevented from leaving a gap between the pressing column 30 to the maximum degree, and chalk dust is enabled to fall into the gap.

It should be noted that: the bottom of the base 23 can be provided with a motor-driven wheel (not shown in the figure), and the whole device is controlled to move by a controller, and the specific structure is the existing design and is not described again. The first motor 3, the first cylinder 19, the second motor 22, the second cylinder 29 and the negative pressure pumping device 7 are all electrically connected with the controller. The on-off time and the opportunity of each electrical device are controlled by the controller. The specific process is as follows: a channel for the device to walk is arranged on the ground of the platform in front of the blackboard, and the device is placed at a designated position when not used. The blackboard is divided into a plurality of areas through the controller, the distance of each area is set in the controller, the controller controls the walking distance of the device, the device reaches the area needing to be erased, the distance between the device and the blackboard is a fixed value, and the brush head can be in contact with the blackboard. Then, the negative pressure suction device 7 and the first motor 3 are started to erase the blackboard. In the erasing process, the cantilever is moved up and down by controlling the first cylinder 19, and the erasing device is automatically corrected to be attached to the blackboard surface, so that the upper area and the lower area of the blackboard are erased. After the erasure is completed, the apparatus is moved to the next area along the platform to perform the erasure. The erasing device can also be manually operated to erase the blackboard. After the device is used for a period of time, the amount of chalk dust in the pressing column 30 can be observed through a door, after the certain degree is reached, the second air cylinder 29 is started to jack the pressing column 30 upwards until the fixing column 32 extends into the pressing hole 31 to press the chalk dust, after the completion, the pressing column 30 is reset, the pressing column 30 is taken out through the door, and the chalk column is taken out through the pressing jacking mechanism, so that dust raising in the process of cleaning the chalk dust is avoided, and the chalk dust is also prevented from being sucked into a human body to cause damage; the chalk dust after being squeezed presses the scattered powder into a solid, so that the chalk dust can not be inhaled into a human body.

In addition, it should be noted that: the multifunctional device has the core that dust with smaller particle size is removed and adsorbed, so that the dust is prevented from floating in the air and being absorbed into the body by the human body in the cleaning process, and the pathological changes are caused in the past. Therefore, based on the principle, the multifunctional device disclosed by the invention can be applied to dust collectors and other fields needing to adsorb and remove dust or dirt. If the dust collector is applied to a dust collector, a hose connected with a dust collecting rod is only connected to a dust collecting box of the existing dust collector, then the place needing to clean the dust is cleaned through the rotatable bristles 11, even if the dust is adhered to the intractable dust on the ground or other places, the contact force of the bristles 11 and the impurities such as the dust can be increased through the elastic pieces between the fixed plate 9 and the movable plate 10, so that the dust can be successfully cleaned, and the impurities such as the cleaned dust can be directly collected in the dust collecting box. Therefore, the multifunctional device used for erasing the blackboard in the invention is only one application scene, which cannot indicate that the invention can only be applied to the scene, and other application scenes are not repeated.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A multifunctional device comprises a cantilever fixed on a stand column (1) and an erasing device fixed on the cantilever, and is characterized in that: the erasing device comprises a shell (2) with an opening at one side and an erasing mechanism rotationally arranged in the shell (2), the erasing mechanism comprises an ash deposition box (4) and a telescopic brush head arranged at one side of the ash deposition box (4), one side of the ash deposition box (4) provided with the brush head is provided with a plurality of negative pressure holes (5), and the other side of the ash deposition box (4) is rotationally connected with the shell (2) through a driving pipe (6) communicated with the ash deposition box (4); one end of the driving pipe (6) extends out of the shell (2) and is connected with a negative pressure pumping device (7).

2. A multi-function device as claimed in claim 1, wherein: limiting plates (8) are circumferentially arranged on the ash deposition box (4), annular grooves matched with the limiting plates (8) are formed in the inner wall of the shell (2), and the shell (2) is provided with a drive to erase the first motor (3) rotating by the mechanism.

3. A multi-function device as claimed in claim 1, wherein: the brush head is in a curve shape and is provided with a plurality of brush heads, the brush head extends to the edge from the center of the side surface of the dust box (4), and the brush head extends out of the opening of the shell (2).

4. A multi-function device as claimed in claim 3, wherein: the brush head includes fixed plate (9) and fly leaf (10), the top of fly leaf (10) is provided with brush hair (11), brush hair (11) stretch out outside the uncovered of casing (2), the bottom surface of fly leaf (10) is provided with T type groove (12), the top surface of fixed plate (9) transversely is provided with spacing (13), spacing (13) are located in T type groove (12), with the step face of T type groove (12) offsets, be provided with the elastic component between the top surface of the interior top surface of T type groove (12) and spacing (13).

5. A multi-function device as claimed in claim 1, wherein: the other side of the shell (2) is provided with a connector (14), and the other side, corresponding to the shell (2), of the connector (14) is connected with the cantilever through a universal joint; be provided with on connector (14) with communicating transition chamber (15) of drive tube (6), the exit intercommunication in transition chamber (15) has negative pressure pipe (16), the other end intercommunication of negative pressure pipe (16) take out negative pressure device (7).

6. A multi-function device as claimed in claim 5, wherein: the cantilever includes fixed arm (17) and can dismantle digging arm (18) of being connected with fixed arm (17), fixed arm (17) articulate on the lateral wall of stand (1), digging arm (18) pass through the universal joint is connected with connector (14), articulated jar seat and the output pole of first cylinder (19) respectively between fixed arm (17) and stand (1).

7. A multifunctional device as claimed in claim 4, characterized in that: the end face of the other end of the movable arm (18) is fixedly provided with a plug-in connector (41), the end face of the fixed arm (17) is provided with a cylindrical groove matched with the plug-in connector (41), the inner wall of the cylindrical groove is provided with at least one sliding groove (42) along the length direction of the cylindrical groove, and the circumferential direction of the plug-in connector (41) is provided with a convex strip (49) matched with the sliding groove (42).

8. A multi-function device as claimed in claim 7, wherein: a spherical groove is formed in the side wall of the cylindrical groove, a cylindrical groove is formed in the side wall of the convex strip (49), a limiting block (43) is arranged in the cylindrical groove, and the limiting block (43) and the cylindrical groove are fixed through an elastic piece; when the plug (41) is completely inserted into the cylindrical groove, the limiting block (43) is positioned in the spherical groove.

9. A multi-function device as claimed in claim 6, wherein: be provided with fixed establishment between digging arm (18) and connector (14), fixed establishment includes that one end fixes fixed strip (20) on connector (14) lateral wall, fixed strip (20) are the arc, be provided with the bar hole along its length direction on fixed strip (20), be provided with spacing post on digging arm (18), spacing post passes the bar hole makes through the nut spacing post and fixed strip (20) are fixed.

10. A multi-function device as claimed in claim 6, wherein: a fixing mechanism is arranged between the movable arm (18) and the connector (14), the fixing mechanism comprises a fixing strip (20) with one end fixed on the side wall of the connector (14), the fixing strip (20) is arc-shaped, a strip-shaped hole is formed in the fixing strip (20) along the length direction of the fixing strip, the inner wall of the strip-shaped hole is wavy, and the wave crests as well as the wave troughs and the wave troughs on the two sides of the strip-shaped hole are respectively and symmetrically arranged; a limiting column is arranged on the movable arm (18), the limiting column penetrates through the strip-shaped hole, and elastic bulges are symmetrically arranged on the side wall of the limiting column; the total diameter of the limiting column and the two elastic bulges is smaller than the diameter between symmetrical wave troughs and larger than the diameter between symmetrical wave crests, and the limiting column moves in the strip-shaped hole by extruding the elastic bulges.