CN102363401B - An automatic dry-erase blackboard eraser for up and down push-pull blackboards - Google Patents

Abstract

The invention relates to an automatic dry erasing blackboard eraser for a vertically sliding blackboard. The blackboard eraser comprises a horizontal moving mechanism and a vertical moving mechanism, wherein the top of the vertical moving mechanism is connected with the horizontal moving mechanism and can slide along the horizontal moving mechanism; the vertical moving mechanism is connected witha blackboard eraser body capable of lifting along the vertical moving mechanism; the blackboard eraser body is provided with a compaction mechanism; and the blackboard eraser body is driven to move horizontally by using a synchronous belt, the blackboard eraser body is driven to move up and down by using a traction wheel and a counterweight, the blackboard eraser body is driven to compact the blackboard by using an electric cylinder, and the blackboard eraser body is driven to erase chalk characters on the blackboard and collect and convey chalk powder by using two opposite rotating spiral rolling brushes. The blackboard eraser can be used for automatically erasing a random part of the vertically sliding blackboard, has the advantages of transmission stability and low noise, and can be used for automatically collecting the chalk powder.

Description

An automatic dry-erase blackboard eraser for up and down push-pull blackboards

technical field

The invention belongs to the technical field of teaching aids, in particular to an automatic dry-erasing blackboard eraser used for up and down push-pull blackboards.

Background technique

Existing automatic blackboard sassafras mechanism mostly is aimed at single block fixed blackboard, seldom has the automatic blackboard sassafras mechanism that is used to wipe up and down push-pull type blackboard. In the existing automatic blackboard erasing mechanism, the mechanism of pulley and rope or the rack and pinion mechanism are mainly used to drive the blackboard to move in the horizontal direction, but the mechanism transmission of the pulley and rope is unstable, and large noise. Another defect of the existing automatic blackboard wiper mechanism is that the blackboard wiper cannot effectively collect chalk dust after wiping the blackboard or needs to use a vacuum device to collect chalk dust. The blackboard wiper mechanism using the vacuum device increases in weight, volume, and cost. Increase.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic dry-erase blackboard eraser for up and down push-pull blackboards, so as to solve the problems that the existing blackboard eraser mechanism cannot automatically collect chalk dust, the transmission is unstable, and the noise is large.

The technical scheme adopted by the present invention to solve the technical problem is: provide an automatic dry-erase blackboard eraser for wiping up and down push-pull blackboards, the top of the vertical movement mechanism is connected with the horizontal movement mechanism, and can move along the horizontal The moving mechanism slides; the vertical moving mechanism is connected with a blackboard wiper body that can be lifted along the vertical moving mechanism; a pressing mechanism is arranged on the described blackboard wiper body; the horizontal moving mechanism includes The upper horizontal guide rail; a synchronous pulley is respectively fixed on the left and right sides of the horizontal guide rail, and a motor is fixed on one of the two synchronous pulleys, and a tensioning device is installed on the other; the two synchronous pulleys are equipped with There is a synchronous belt; the horizontal guide rail is provided with a moving pulley; the lower end of the pulley is fixed to the top of the vertical movement mechanism, and the upper end is fixed to the splint; the splint is fixed to the vertical movement mechanism and clamped on the synchronous on the belt; the vertical moving mechanism includes a vertical plate fixed on one side of the blackboard; a traction motor, a traction wheel and a brake are fixed above the vertical plate; the shaft end of the traction motor and the traction The guide wheel is fixed, and the other end of the traction wheel is fixed with the brake; the vertical guide rails are fixed on both sides of the vertical plate; the upper part of the vertical guide rail is provided with a sassafras moving part, and the lower part is provided with a counterweight; Connector guide shoes are respectively fixed on the upper, lower, left, and right corners of the moving part of the sassafras; counterweight guide shoes are respectively fixed on the upper, lower, left, and right corners of the counterweight; a steel wire rope is wound on the traction wheel; One end of the steel wire rope is fixed to the counterweight, and the other end is fixed to the moving part of the sassafras; the pressing mechanism is composed of a sassafras connector and an electric cylinder; the sassafras connector is fixed to the blackboard sassafras; The cylinder block of the electric cylinder described above is fixed with the sassafras body moving part, and the piston of the electric cylinder is fixed with the sassafras body connector.

The blackboard wiper body includes two first and second roll brushes that are arranged close to each other in the opposite spiral direction and direction; the outer roll surfaces of the first roll brush and the second roll brush are close to the blackboard surface; the inner axes of the first roller brush and the second roller brush are respectively provided with a roller brush rotating shaft, and the outer part is provided with a blackboard wiper body shell; the described roller brush rotating shaft is driven by a gear installed in a gear transmission box System control; the gear transmission system is controlled by the motor at the bottom of the gear transmission box; the gear transmission box is located at the upper end of the blackboard sassafras shell; The telescopic column; the bottom end of the wheel transmission box is hollowed out and equipped with a chalk dust collection box bracket; a chalk dust collection box matching it is arranged in the chalk dust collection box bracket.

The first rolling brush and the second rolling brush adopt spiral brushes with opposite rotations, which can automatically collect chalk dust and transport it to a removable chalk dust collection box at the bottom.

The chalk dust collecting box is a detachable drawer.

Beneficial effect

The invention can independently control the left and right, up and down, front and rear movements of the blackboard wiper (make the blackboard wiper close to the blackboard), erase the chalk characters at any position on the blackboard, and effectively improve the flexibility of the blackboard wiper; adopt the traction wheel and the counterweight mechanism, It can make the blackboard wiper move up and down flexibly; the timing belt is used to drive the blackboard wiper to move horizontally, which not only stabilizes the transmission but also reduces the noise; the electric cylinder can realize the pressing of the blackboard wiper on the upper and lower blackboards on different planes; Using two counter-rotating helical brushes in opposite directions, the chalk dust can be effectively collected automatically and automatically conveyed to the bottom removable chalk dust collection box.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a structural diagram of the horizontal movement mechanism.

Figure 3 is a structural diagram of the vertical movement mechanism.

Fig. 4 is the structural diagram of the pressing mechanism that makes the blackboard wiper close to the blackboard.

Fig. 5 is a structural diagram of the connector connecting the blackboard sassafras body and the electric cylinder.

Fig. 6 is the rear view of the spiral rolling brush type blackboard sassafras body with opposite rotation and direction.

Fig. 7 is the side view of the spiral rolling brush type blackboard sassafras sassafras when it is working in the opposite direction and in the opposite direction.

Fig. 8 is a state diagram when the blackboard wiper body wipes the upper blackboard of the up and down push-pull type blackboard.

Fig. 9 is a state diagram when the blackboard wiper wipes the lower blackboard of the up and down push-pull type blackboard.

Fig. 10 is a structural diagram of spiral roller brushes with opposite directions of rotation in the blackboard sassafras body.

Fig. 11 is the structural representation of the chalk dust collection box at the bottom of the sassafras sassafras body on the blackboard.

Fig. 12 is a state diagram when the drawer is drawn out in the chalk dust collection box at the bottom of the blackboard sassafras sassafras body.

1-horizontal moving mechanism; 2-vertical moving mechanism; 3-pressing mechanism; 4-blackboard sassafras body; 5, 5A-synchronous pulley; 6-tensioning device; - pulley; 10- splint; 11- horizontal guide rail; 12- traction motor; 13- traction wheel; 14- brake; 15- moving parts of sassafras; Guide rail; 19-counterweight guide shoe; 20-counterweight; 21-sassafras body connector; 22-electric cylinder; 23-upper blackboard; 24 lower blackboard; 25-first spiral brush; 26-second spiral brush ;27-gear transmission system; 28-gear transmission box; 29 spiral roller brush rotation shaft; 30-motor; 31 connector; 32-blackboard sassafras body shell; ; 35 - vertical board.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Example 1

As shown in Figure 1, the present invention is an automatic dry-erase blackboard eraser for a push-pull blackboard up and down, the top of the vertical movement mechanism 2 is connected to the horizontal movement mechanism 1, and can slide along the horizontal movement mechanism 1; Described vertical movement mechanism 2 is connected with the blackboard sassafras body 4 that can lift along vertical movement mechanism 2;

As shown in Figure 2, described horizontal movement mechanism 1 comprises the transverse guide rail 11 that is fixed on blackboard top; Described transverse guide rail 11 left and right sides respectively fixes a synchronous belt pulley 5, and two synchronous belt pulleys 5 are fixed with The motor 8 is equipped with a tensioning device 6 on the other; the two synchronous pulleys 5 are equipped with a synchronous belt 7, which plays the role of tensioning the synchronous belt; the horizontal guide rail 11 is provided with a moving pulley 9; the lower end of the pulley 9 is fixed to the top of the vertical movement mechanism 2, and the upper end is fixed to the splint 10; the splint 10 is fixed to the vertical movement mechanism 2, and is clamped on the timing belt 7, and the timing belt drives the splint 10 Move horizontally, and simultaneously splint 10 drives vertical moving mechanism 2 to move horizontally again.

As shown in 3, the vertical moving mechanism 2 includes a vertical plate 35 fixed on one side of the blackboard; a traction motor 12, a traction wheel 13 and a brake 14 are fixed above the vertical plate 35; The shaft end of the traction motor 12 is fixed with the traction wheel 13, and the other end of the traction wheel 13 is fixed with the brake 14; the vertical guide rail 18 is fixed on both sides of the vertical plate 35; There is a sassafras moving part 15, and the bottom is provided with a counterweight 20; the upper, lower, left, and right four corners of the sassafras moving part 15 are respectively fixed with connector guide shoes 16, which move on the pair of vertical guide rails 18 close to the blackboard ; The counterweight guide shoes 19 are respectively fixed on the upper, lower, left, and right corners of the counterweight 20, and move on the outer vertical guide rail 18; the above-mentioned traction sheave 13 is wound with a steel wire rope 17; 17 one end is fixed on the counterweight 20, and the other end is fixed on the sassafras moving part 15, and the traction sheave 13 rotates and drives the sassafras moving part 15 to move up and down through the wire rope 17.

As shown in Figure 4, described pressing mechanism 3 is made up of sassafras connector 21 and electric cylinder 22; Described sassafras connector 22 is fixed with blackboard sassafras 4, and sassafras connector 21 drives blackboard sassafras The body 4 moves back and forth, so that the blackboard sassafras body 4 can compress two blackboards on different planes up and down; the electric cylinder 22 cylinder body is fixed with the sassafras body moving part 15, and the piston of the electric cylinder 22 is connected with the sassafras body connector 21 is fixed, and the piston of electric cylinder 22 can move back and forth, drives sassafras body connector 15 to move back and forth.

As shown in Fig. 5 to Fig. 8, described blackboard sassafras sassafras body 4 comprises two first helical rolling brushes 25 and the second helical rolling brush 26 that are arranged close to each other in opposite directions and in opposite directions; The outer rolling surfaces of the spiral rolling brush 25 and the second spiral rolling brush 26 are close to the blackboard surface; the inner shaft centers of the first spiral rolling brush 25 and the second spiral rolling brush 26 are respectively provided with a rolling brush rotating shaft 29, and the external setting Blackboard wiper body shell 32 is arranged; Described rolling brush rotating shaft 29 is controlled by the gear transmission system 27 installed in the gear transmission box body 28; Described gear transmission system 27 is controlled by the motor 30 at the bottom of the gear transmission box body 28, The motor 30 drives the gear transmission system 27 to operate, and the gear transmission system 27 drives the rotating shaft 29 to rotate, thereby driving the first spiral roller brush 25 and the second spiral roller brush 26 to rotate in opposite directions; the gear transmission box 28 is located on the blackboard Body shell 32 inner upper end; Described blackboard sassafras body shell 32 is provided with telescopic column 31 that links to each other with sassafras connector 21; Described gear transmission box 28 bottoms are hollowed out and equipped with chalk dust collection box support 33; There is a chalk dust collection box 34 matching it in the chalk dust collection box support 33; the chalk dust collection box 34 is a removable drawer.

The motor 8, the traction motor 12 and the electric cylinder 22 are all independently driven.

Assume that the initial position of the blackboard is as shown in Figure 9: the outer blackboard is on top and the inner blackboard is below; the blackboard wiper 4 is located at the far left of the lower blackboard, and the blackboard wiper 4 is not in contact with the outer blackboard.

When erasing the upper blackboard 23, as shown in Figure 9, the piston of the electric cylinder 22 stretches out, so that the blackboard sassafras body 4 is close to the upper blackboard 23 surface of the push-pull blackboard up and down, and the erasing work is carried out; at the same time, the movement in the horizontal direction is controlled The motor 8 drives the synchronous belt 7 to drive the blackboard wiper from left to right. When it moves to the rightmost end of the upper blackboard 23 of the push-pull blackboard, the motor 8 that controls the horizontal movement stops, and the telescopic shaft of the electric cylinder 22 shrinks. Back, the traction motor 12 drives the traction wheel 13 to rotate, the blackboard sassafras body 4 descends, the counterweight 20 rises, and the blackboard sassafras body 4 moves to the position of the blackboard 24 below the push-pull blackboard, as shown in Figure 10, The telescopic shaft of electric cylinder 22 stretches out, and blackboard wiper body 4 is attached to the surface of blackboard 24 below the push-pull type blackboard up and down, and erases work; move to the left. After the whole blackboard was all wiped, the telescopic shaft of the electric cylinder 22 retracted, and the traction motor 12 reversed, so that the blackboard wiper body 4 rose, and got back to the initial position shown in Figure 9 .

When the blackboard sassafras body 4 cleans the chalk characters on the upper blackboard 23 or the lower blackboard 24, the motor 30 installed on the shell 32 of the blackboard sassafras body 4 drives the gear transmission system 27 supported on the transmission box body 28, and the gear transmission system 27 drives the rotating shaft 29 that is installed on the shell 32 of blackboard sassafras body 4, and the opposite spiral roller brushes 25 and 26 rotate in opposite directions relatively, as shown in Figure 11; and the spiral groove of the second spiral roller brush 26 are automatically collected in the blackboard sassafras body 4, and are transported to the extractable chalk dust collecting box 34 at the bottom of the blackboard sassafras body 4 along the spiral groove of the spiral roller brush, As shown in Figure 12 and Figure 13, extractable chalk collection box 34 can be extracted from chalk collection box support 33, so that remove the chalk dust in the box; Electric cylinder 22 drives blackboard sassafras body along the direction perpendicular to blackboard Move to adapt to the distance difference between the upper blackboard 23 and the lower blackboard 24 of the push-pull blackboard along the thickness direction, and adjust the adhesion between the two spiral roller brushes and the blackboard at the same time.

Can control blackboard sassafras body 4 to move to the arbitrary position of push-pull type blackboard by controlling motor 8 and traction motor 12 moving in horizontal direction, electric cylinder 22 telescopic rods elongate, can make blackboard sassafras body 4 close to blackboard surface.

Claims (4)

1. automatic xerotripsis formula blackboard eraser that is used for the type of push and pull up down blackboard, comprise horizontal mobile mechanism (1) and vertical travel mechanism (2), it is characterized in that described vertical travel mechanism (2) top links to each other with horizontal mobile mechanism (1), and can slide along horizontal mobile mechanism (1); Being connected with in the described vertical travel mechanism (2) can be along the blackboard eraser sassafras body (4) of vertical travel mechanism (2) lifting; Hold-down mechanism (3) is arranged above the described blackboard eraser sassafras body (4); Described horizontal mobile mechanism (1) comprises the cross slide way (11) that is fixed on the blackboard top; Described cross slide way (11) left and right sides is fixed a synchronous pulley (5) respectively, above (5) one of two synchronous pulleys motor (8) is arranged fixedly, and tensioning apparatus (6) is installed above another; Is furnished with synchronous band (7) on described two synchronous pulleys (5); Be provided with mobile pulley (9) above the described cross slide way (11); Vertical travel mechanism (2) top is fixed in described pulley (9) lower end, and upper end and clamping plate (10) are fixing; Described clamping plate (10) are fixing with vertical travel mechanism (2), and are clamped on the synchronous band (7); Described vertical travel mechanism (2) comprises the vertical plate (35) that is fixed on blackboard one side; Described vertical plate (35) upper fixed has traction motor (12), traction sheave (13) and brake (14); Described traction motor (12) axle head and traction sheave (13) are fixing, and traction sheave (13) other end and brake (14) are fixing; Fixedly there are two pairs of upright guide rails (18) described vertical plate (35) both sides; Described upright guide rail (18) is provided with sassafras body moving member (15), and described sassafras body moving member (15) is connected with counterweight (20); Described sassafras body moving member (15) fixedly have connector to lead boots (16) respectively on four angles up and down; Described counterweight (20) fixedly have counterweight to lead boots (19) respectively on four angles up and down; Be wound with steel wire rope (17) above the described traction sheave (13); Described steel wire rope (17) one ends are fixed in counterweight (20), and the other end is fixed in sassafras body moving member (15); Described hold-down mechanism (3) is made up of sassafras body connector (21) and electronic cylinder (22); Described sassafras body connector (21) is fixing with blackboard eraser sassafras body (4); Described electronic cylinder (22) cylinder body and sassafras body moving member (15) are fixing, and the piston of electronic cylinder (22) and sassafras body connector (21) are fixing.

2. a kind of automatic xerotripsis formula blackboard eraser for the type of push and pull up down blackboard according to claim 1 is characterized in that, described blackboard eraser sassafras body (4) comprises two opposite first round brush (25) and second round brush (26) of rotary orientation of being close to arrangement; The outer face of sidewindering of described first round brush (25) and second round brush (26) is adjacent to blackboard surface; Described first round brush (25) and second round brush (26) internal axis are respectively equipped with round brush rotating shaft (29), and the outside is provided with blackboard eraser body case (32); Described round brush rotating shaft (29) is by gear train assembly (27) control that is installed in the gear drive casing (28); Described gear train assembly (27) is by motor (30) control of gear drive casing (28) bottom; Described gear drive casing (28) is positioned at blackboard eraser body case (32) inner upper end; Described blackboard eraser body case (32) is provided with the telescopic mast (31) that links to each other with sassafras body connector (21); Described blackboard eraser sassafras body (4) bottom is provided with chalk dust and collects box support (33); Described chalk dust is collected has the chalk dust that matches with it to collect box (34) in the box support (33).

3. a kind of automatic xerotripsis formula blackboard eraser for the type of push and pull up down blackboard according to claim 2, it is characterized in that, described first round brush (25) and second round brush (26) are that rotation direction is opposite, the helical form hairbrush of reverse rotation, can collect chalk dust automatically and its chalk dust that is delivered to blackboard eraser body bottom is collected box.

4. a kind of automatic xerotripsis formula blackboard eraser for the type of push and pull up down blackboard according to claim 2 is characterized in that, described chalk dust is collected the drawer of box (34) for extracting.

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