Blackboard eraser automatic dust removing apparatus
Technical field
The utility model is a kind of classroom blackboard eraser automatic dust removing apparatus.
Technical background
At present, most schools use or the blackboard eraser of plank adhesive hair felt formula, use because it is inexpensive, when erase the board often time, in the felt of blackboard eraser, will adhere to a lot of chalk dusts, cause the unclean of blackboard eraser.At this moment need teacher oneself to process, the edge that most of teachers connect the groove of chalk dust at blackboard rub several under, can produce like this some dust from flying, everywhere diffusion, this will cause at school in process, and teacher and the classmate near blackboard also become more and more to the uptake of dust.This phenomenon affects the classmate's of teacher and close blackboard health to a great extent.For this reason, seek the dust on a kind of automatic elimination blackboard eraser and the mode that dust can be siphoned away automatically seems particularly important.
Summary of the invention
The purpose of this utility model is, solves above-mentioned existing existing problem, provide can fast dust-removing a kind of blackboard eraser automatic dust removing apparatus.
The utility model is achieved in that rail brackets is connected with the right plate of casing by screw, and guide rails assembling, on rail brackets, is installed slide block on guide rail, mounting bracket on slide block, and motor is rack-mount by electric machine support.The output shaft of motor is connected with shaft coupling, and the other end of shaft coupling is connected with power transmission shaft, and power transmission shaft is rack-mount by bearing.On power transmission shaft, be separately installed with gear, hairbrush by key, wheel and rack is meshed, and the two ends of tooth bar are fixed on casing.Above hairbrush, on casing, open one rectangular mouthful, limit switch is fixed on casing, and dust catcher support is connected with casing, and dust sucting motor is fixed on dust catcher support, and the output shaft of dust sucting motor is connected with impeller, and filter bag is connected with dust catcher support.
The input port of being connected to of its circuit-line: single chip computer AT 89C2051 is connected with start button, stop button, front limit signal, rear limit signal, single chip computer AT 89C2051 delivery outlet is connected with direct drive module L298N input port, and the delivery outlet of direct drive module L298N is connected with round brush motor M 1, dust sucting motor M2 respectively.
Advantage of the present utility model: be a teacher and wipe the blackboard eraser lay down location that blackboard eraser is placed on after blackboard to work box; after starter motor button; hairbrush brushes down the dust on blackboard eraser automatically; simultaneously motor of dust collector rotarily drive vane rotary by dust absorbing in filter bag; prevent the expanding of dust; save teacher's muscle power simultaneously, protected teacher and the health near blackboard classmate.
Brief description of the drawings
Fig. 1 is the front view of structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is circuit circuit diagram.
Detailed description of the invention
Describe in detail below in conjunction with accompanying drawing: as shown in the figure, rail brackets 1 is connected with the right plate of casing 11 by screw, and guide rail 2 is arranged on rail brackets 1, and slide block 3 is installed on guide rail 2, mounting bracket 4 on slide block 3, motor 6 is arranged on support 4 by electric machine support 5.The output shaft of motor 6 is connected with shaft coupling 7, and the other end of shaft coupling 7 is connected with power transmission shaft 8, and power transmission shaft 8 is arranged on support 4 by bearing 9.On power transmission shaft 8, be separately installed with gear 10, hairbrush 12 by key, gear 10 is meshed with tooth bar 14, and the two ends of tooth bar 14 are fixed on casing 11.Above hairbrush 12, on casing 11, open one rectangular mouthful, for placing blackboard eraser 13.Dust sucting motor 15 is fixed on casing 11, and dust catcher support 19 is connected with casing 11, and dust sucting motor 16 is fixed on dust catcher support 19, and the output shaft of dust sucting motor 16 is connected with impeller 18, and filter bag 17 is connected with dust catcher support 19.
Being connected to of its circuit-line: single chip computer AT 89C2051 has delivery outlet P1 interface and input port P3 interface, the P1.0 of delivery outlet P1, P1.1 P1.2, P1.3, P1.4, P1.5 interface are connected with IN1, IN2, IN3, IN4, ENAA, the ENBB interface of direct drive module L298N, interface IN1, the IN2 of direct drive module L298N, ENAA are one group and are connected with round brush motor M 1, control round brush motor M 1; Interface IN3, the IN4 of direct drive module L298N, ENBB are one group and are connected with dust sucting motor M2, control dust sucting motor M2, the P3.0 interface of input port P3 is connected with start button, P3.1 interface is connected with stop button, and the rear limit signal S2 that the front limit signal S1 that P3.3 interface moves back and forth with round brush is connected, P3.4 interface moves back and forth with round brush is connected.
Be a teacher and wipe the blackboard eraser lay down location that blackboard eraser is placed on after blackboard to work box, after starter motor button, hairbrush brushes down the dust on blackboard eraser automatically, simultaneously motor of dust collector rotarily drive vane rotary by dust absorbing in filter bag.