CN201189787Y

CN201189787Y - Automatic wiping machine of blackboard for teaching

Info

Publication number: CN201189787Y
Application number: CNU2008200564112U
Authority: CN
Inventors: 姚苗发; 陈解华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-20
Filing date: 2008-03-20
Publication date: 2009-02-04
Anticipated expiration: 2018-03-20

Abstract

The utility model provides an automatic erasing machine for a blackboard used in a classroom, which comprises four frame sides fixed on the peripheral edges of the blackboard, a horizontally moving mechanism which is supported on the upper frame and the lower frame and can reciprocate from side to side along the blackboard, an erasing device and an electric control part. The horizontally moving mechanism depends on a DC motor to drive a horizontally moving bracket through two chains to reciprocate from side to side along the blackboard, the erasing device arranged in the horizontally moving bracket depends on another DC motor to drive an erasing roller through a gear to rotate for erasing, chalk dust being erased off are sucked into a dust storing bag by a dust-sucking fan. On a shell of an erasing roller seat, an electromagnetic pick-up device is also arranged for ensuring the erasing roller to break away from the blackboard when power is cut off, so that figures or characters needing to be retained cannot be erased. The utility model can lighten the labor intensity for erasing the blackboard, can avoid the rising of the chalk dust during erasing, and can reduce dust pollution on environment.

Description

The teaching automatic wiping machine of blackboard

Technical field

The utility model relates to a kind of teaching aid, specifically is meant the automatic wiping machine of teaching with blackboard.

Background technology

Teaching is a teaching aid indispensable in the schools of various levels and categories classroom with blackboard, and the teacher can write related content at any time in conjunction with the teaching content on blackboard, match with oral giving lessons, and finishes teaching.But the literal of writing on the blackboard is wiping in time after explanation finishes, and wiper commonly used is a Blackboard eraser, wastes time and energy during wiping, and causes a powder to fly upward, and pollutes classroom environment.

Begin the projecting apparatus that grows up now, project on wall or the white lining cloth writing at the literal on the film, without chalk, the situation of having avoided a powder to fly upward, but required literal must prepare on the film in advance, and inconvenience is write as required at any time, dumb, and cost is also very high, and therefore, blackboard is still the teaching aid of school's widespread usage.

Summary of the invention

The purpose of this utility model is at the defective in the above-mentioned background technology, provides a kind of and can avoid the automatic wiping machine that a powder flies upward, blackboard is used in the teaching of save trouble and labor.

The teaching of the utility model design comprises with the automatic wiping machine of blackboard and is fixed on blackboard four frames in upper and lower, left and right of outer edge all around, along the reciprocating transversing mechanism in the blackboard left and right sides, and wiping arrangement and electric control system, wherein:

The cross section of frame is the shape in channel-section steel cross section, and there is the flanging of direction in groove on the notch both sides, is surrounded by pulley track on two flangings of the notch of upper side frame, and upper and lower side frame is notch and outwards installs;

Described transversing mechanism assembly comprises the frame that traverses, be installed in the dc motor that sprocket wheel is housed on upper side frame right-hand member, the output shaft, be fixed on the interior external double bond wheel of the frame upper end of traversing, be fixed on the strand wheel of upper side frame left end, two on chain is set, on the inboard sprocket wheel of a sprocket wheel that is enclosed within described motor output shaft and described double-stranded wheel, another root then is enclosed within on the strand wheel of the outside sprocket wheel of described double-stranded wheel and upper side frame left end, drives the wiping arrangement that traverses thus and moves back and forth along about blackboard.Traverse frame upper end is equipped with along the pulley of the pulley track slippage of wrapping on the upper side frame notch flanging, and the frame lower end of traversing is bearing on the guide rail in the lower frame with linear bearing.Also be provided with the tensioning screw of above-mentioned another root chain of tensioning on the strand wheel shaft of above-mentioned upper side frame left end.

The constituent components of wiping arrangement comprises two wiper rolls that are surrounded by the elasticity felt, the gear of wiper rolls axle head, gears engaged on described gear and the wiping arrangement dc motor output shaft, wiper rolls is provided with to float and is installed in the interior housing of frame groove that traverses, the lower housing portion periphery is embedded with sealing strip and constitutes closed structure, and a powder flies upward excessive when preventing wiping.Traverse and also be provided with dust absorption fan and storage dirt bag in the frame.Be fixed with 4 alignment pins on the described frame that traverses, 4 alignment pin overcoats compress springs, and are slidingly matched with 4 locating holes that are fixed on the wiper rolls housing, under the compression spring action wiper rolls are closely contacted with blackboard.Wiping arrangement also is fixed with two electromagnetic attracting devices in the frame groove that traverses, the end of electromagnetic attracting device is fixed on wiper rolls housing top, and when the electromagnetic attracting device outage disengaged, the wiper rolls housing floated, wiper rolls breaks away from blackboard, keeps required literal and is not wiped out.

Electric control system comprises transversing mechanism motor, wiping arrangement motor, dust absorption fan motor, two electromagnetic attracting devices, and the lead that connects control panel is arranged, lead row be fixed on the Electric wire support of upper side frame bottom, and control panel is arranged in the left frame.

The utility model has the advantages that the labour intensity that has alleviated blackboard wiping, the flying upward an of powder when having avoided wiping reduced the dust pollution of environment.

Description of drawings

Accompanying drawing 1 is the utility model schematic appearance; Fig. 2 is transversing mechanism sprocket wheel, the chain component diagram of upper side frame right-hand member; Accompanying drawing 3 is the side view of accompanying drawing 2; Accompanying drawing 4 is the transversing mechanism sprocket wheel component diagram of upper side frame left end; Accompanying drawing 5 is the side view of accompanying drawing 4; Accompanying drawing 6 is the side view of the member of the frame inside of traversing;

Fig. 7 is a wiper rolls assembly sectional drawing; Fig. 8 is the electric control system line map.Among the figure:

The double-stranded wheel of 1-; The double-stranded wheel bearing of 2-; The 3-end ring; The 4-screw; The frame that traverses of 5-transversing mechanism; 6-pulley mandrel; 7-pulley gusset piece; The 8-pulley bearings; The 9-pulley; The 10-Electric wire support; 11-electric wire row; The 12-carbon brush; The 13-brush carrier; 14-wiping arrangement motor bed-plate; 15-wiping arrangement motor; 16-wiping arrangement motor bracket; 17-compresses spring; 18 alignment pins; The 19-dust absorption fan; The 20-lower frame; The 21-linear bearing; Guide rail in the 22-lower frame; 23-linear motion axis bearing; The 24-compound plate; 25-tensioning screw seat; The 26-tensioning screw; 27-tightener sprocket axle bed; The 28-chute; 29-wiper rolls gear; 30-wiping arrangement motor gear; The 31-bearing; 32-wiping roller seat; 33-wiping roller seat housing; The 34-wiper rolls; 35-strand wheel shaft; The 36-bearing; 37-strand wheel; 38-transversing mechanism motor; 39-transversing mechanism motor base (frame); 40-transversing mechanism motor output shaft sprocket wheel; The 41-chain; The 42-chain; The 43-left frame; The 44-left frame; The 45-sealing strip; The 46-control panel; The double-stranded wheel shaft of 47-; The 48-upper side frame; The 49-electromagnetic attracting device; The 50-blackboard.

The specific embodiment

Below the utility model is described in further detail.

Upper and lower, left and

right frame

48,20,43,44 is made by cold-reduced sheet, is separately fixed at the outer edge all around of blackboard 50, forms the frame assembly of an integral body.The shuttling movement of chain 41 make the frame 5 that traverses by its upper end pulley 9 and the lower end be bearing in linear bearing 21 on the guide rail 22 between upper and

lower frame

48,20 along blackboard 50 move left and right.

Wiping arrangement motor 15 and transversing mechanism motor 38 are 24V, 70W dc motor.

Sealing strip 45 materials are rubber, are inlaid in the lower periphery of wiping roller seat housing 33, make wiping roller seat housing 33 become a closed structure, and the powder under the wiper rolls 34 high speed rotating brushes is siphoned away by 24V direct current dust absorption fan 19 immediately.

On blackboard 50, keep picture and text, then can take off electricity by the button of preceding pressing electromagnetic attracting device 49, make wiping roller seat housing 33 by float lifting at wiper rolls 34 as needing, wiper rolls 34 breaks away from blackboard 50, is crossing the picture and text part of required reservation, release button, wiper rolls 34 falls, and continues wiping.

The starting switch program of this machine is as follows:

1. connection total power switch;

2. open the switch of dust absorption fan 19, dust absorption fan 19 is in running order;

3. start the switch of wiping arrangement motor 15, drive wiper rolls 34 rotation at a high speed;

4. start the switch of transversing mechanism motor 38, drag frame 5 walkings of traversing;

5. after wiping finishes, close the switch of the motor 38 that traverses, make the frame 5 that traverses be parked in a certain position on the blackboard 50, turn off other switches then successively.

Claims

1. impart knowledge to students with the automatic wiping machine of blackboard, it is characterized in that comprising and be fixed on blackboard (50) four frames in upper and lower, left and right (48), (20), (43), (44) of outer edge all around, along the reciprocating transversing mechanism in blackboard (50) left and right sides, wiping arrangement and electric control system, wherein:

The cross section of each frame is the shape in channel-section steel cross section, and there is the flanging of direction in groove on the notch both sides, is surrounded by pulley track along its length on two flangings of the notch of upper side frame (48), and upper and lower frame (48), (20) are notch and outwards install;

Described transversing mechanism assembly comprises the frame that traverses (5), be installed in the right-hand member of upper side frame (48), the dc motor (38) of the transversing mechanism of sprocket wheel (40) is housed on the output shaft, be fixed on the interior external double bond wheel (1) of the frame that traverses (5) upper end, be fixed on the strand wheel (37) of upper side frame (48) left end, chain (41) is enclosed within the sprocket wheel (40) and the described two strands of motor (38) output shaft and takes turns on the inboard sprocket wheel of (1), chain (42) is enclosed within on the outside sprocket wheel and described strand wheel (37) of described double-stranded wheel (1), the traverse upper end of frame (5) is equipped with pulley (9) along the pulley track slippage that coats on the upper side frame notch flanging, and the lower end of the frame that traverses (5) is bearing on the guide rail (22) in the lower frame with linear bearing (21);

Described wiping arrangement comprises two wiper rolls (34) that are surrounded by the elasticity felt, the gear (29) of wiper rolls (34) axle head, gear (29) meshes with the gear (30) of wiping arrangement motor (15), wiping roller seat (32) is provided with to float and is installed in the interior housing (33) of the frame that traverses (5) groove, housing (33) bottom is embedded with sealing strip (45), also is provided with dust absorption fan and storage dirt bag in the frame that traverses (5);

Described electric control system comprises motor, two electromagnetic attracting devices (49) of transversing mechanism motor (38), wiping arrangement motor (15), dust absorption fan (19), and the lead that connects control panel (46) is arranged (11), lead row (11) is fixed on the Electric wire support (10) of upper side frame (48) bottom, and control panel (46) is arranged in the left frame (44).

2. teaching as claimed in claim 1 is with the automatic wiping machine of blackboard, it is characterized in that also being provided with on the strand wheel shaft (35) of described upper side frame (48) left end the tensioning screw (26) of tension chain (42).

3. the teaching as claimed in claim 1 automatic wiping machine of blackboard, it is characterized in that described wiping arrangement also comprises 4 alignment pins (18) that are fixed on the frame that traverses (5), alignment pin (18) overcoat compression spring (17), and be slidingly matched with 4 locating holes that are fixed on the wiper rolls housing (33), wiper rolls (34) is closely contacted with blackboard (50).

4. as claim 1 or 3 described teaching automatic wiping machine with blackboards, it is characterized in that described wiping arrangement also is fixed with two electromagnetic attracting devices (49) in the groove of the frame that traverses (5), the end of electromagnetic attracting device (49) is fixed on the top of wiper rolls housing (33).