CN211181305U

CN211181305U - Drawing display board for economics

Info

Publication number: CN211181305U
Application number: CN202020044348.1U
Authority: CN
Inventors: 王翠兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-08-04
Anticipated expiration: 2030-01-09

Abstract

The utility model relates to a drawing display board for economics, which comprises a drawing board, wherein the drawing board is provided with an automatic cleaning mechanism and a scale mechanism for assisting drawing, the automatic cleaning mechanism comprises a driving motor and a driving screw rod, clearance pole and sweep the piece, driving motor installs on drawing the board, driving motor is close to the one end of drawing the board, the one end that driving motor was kept away from at the drawing board top is fixed with the fixed plate, drive lead screw one end is fixed on driving motor's output shaft, the other end and fixed plate fixed connection, threaded connection has the movable plate on the drive lead screw, the clearance pole is installed on the movable plate through adjusting fixed establishment, the length direction of clearance pole and the length direction mutually perpendicular of drive lead screw, the face of board is drawn to the one side orientation of clearance pole, sweep the piece and fix on one side face that the clearance pole is close to and draws the board, the one side that the clearance pole was kept away from to the sweep piece is contradicted with. The utility model has the advantages of can conveniently clear away picture or curve on the show board, make teacher's work more light.

Description

Drawing display board for economics

Technical Field

The utility model belongs to the technical field of teaching tool's technique and specifically relates to a drawing show board for economics is related to.

Background

With the rapid development of Chinese economy, the subjects of economic departments are selected and favored by more and more students. The economic curves or economic figures are often drawn by economics in the teaching process, and the drawing and displaying board is required to be used for drawing the curves and figures, and is a teaching tool for displaying economic pictures and economic curves for students.

Some current drawing show boards that are used for economics are exactly a comparatively portable drawing board, and teachers draw economic curve that needs to use etc. on drawing show board through painting brush or chalk.

The prior art has the following technical problems that as the teacher needs more pictures or curves sometimes when giving an instruction to learn, the teacher needs to draw a large number of pictures or curves, and the pictures or curves can be removed slowly by using the eraser, so that more strength of the teacher is exerted, the teacher can be tired when giving the instruction, and the teaching quality can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drawing show board for economics, it has can conveniently clear away picture or curve on the show board, make teacher's work more light advantage.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a drawing display board for economics comprises a drawing board, wherein an automatic cleaning mechanism for conveniently cleaning the drawing board and a scale mechanism for assisting drawing are arranged on the drawing board, automatic clearance mechanism includes driving motor, the drive lead screw, clearance pole and sweep the piece, driving motor installs and draws the board top, driving motor is close to the one end of drawing the board, the one end that driving motor was kept away from at the drawing board top is fixed with the fixed plate, the drive lead screw is fixed on driving motor's output shaft, driving motor's one end and fixed plate fixed connection are kept away from to the drive lead screw, threaded connection has the movable plate on the drive lead screw, the clearance pole is installed on the movable plate through adjusting fixed establishment, the length direction of clearance pole and the length direction mutually perpendicular of drive lead screw, the face of board is drawn to the one side orientation of clearance pole, sweep the piece is fixed on the clearance pole is close to one side face of drawing the board, one side that the clearance pole was kept away from to the sweep.

Through adopting above-mentioned technical scheme, driving motor rotates and to drive the drive lead screw and rotate, the drive lead screw rotates and drives the movable plate and remove, the clearance pole is installed on the movable plate under the effect of adjusting fixed establishment, the clearance pole takes place to remove along with it, sweep the piece on the clearance pole can clean the face of drawing the board along with the removal of clearance pole, can give to draw the economic picture on the face of board and wipe, need not wipe in the manual work, can save more physical power of people, reach labour saving and time saving's purpose.

The utility model discloses further set up to adjust fixed establishment and include connecting plate, axis of rotation, dead lever and L shape reinforcement checkpost, connecting plate fixed connection be in the movable plate orientation draw one side of board face, the connecting plate stretches out the top face of drawing the board on the movable plate, and the connecting plate is close to one side of drawing the board face and has seted up the turn trough, and the both sides inner wall of turn trough runs through the both sides of connecting plate, the one end of clearance pole is passed through in the axis of rotation connects the turn trough, and the dead lever rotates the both sides of connecting plate, and L shape reinforcement checkpost is fixed in the both sides of connecting plate, and the dead lever of connecting plate with one side and L shape reinforcement checkpost lie in the both sides of turn trough side notch respectively, and the dead lever rotates the screens department of reinforcing the checkpost to L shape and passes through the mounting location in the screens department of L.

Through adopting above-mentioned technical scheme, when needs clean the board of drawing, rotate the clearance pole to drawing the board surface, rotate the dead lever of connecting plate both sides to make the dead lever block on L shape reinforcement checkposts, the clearance pole can conflict with the dead lever of both sides when removing like this, can prevent that the clearance pole from rotating on the connecting plate, makes the clearance pole only can take to sweep the piece and clean drawing the board.

The utility model discloses further set up as the mounting includes locating piece and magnet piece, the upper and lower both sides of dead lever are all installed the magnet piece, L shape is consolidated the screens bottom surface of checkpost and is also installed the magnet piece, the locating piece is fixed in the both sides of movable plate, and the locating piece corresponds with the dead lever of homonymy each other, and the locating piece is located the top that the dead lever rotated the end, and the locating piece is close to the movable plate, one side that the movable plate was kept away from to the locating plate is installed the magnet piece, the dead lever passes through the magnet piece can be with L shape reinforcement checkpost or.

Through adopting above-mentioned technical scheme, magnet piece economic nature is strong, and is more common, uses the magnet piece to carry out the fixed of dead lever moreover, more makes things convenient for people to pull the dead lever, more conveniently restricts the clearance pole.

The utility model discloses further set up to: the scale mechanism includes elevator motor, lift lead screw, elevator and scale, and elevator motor is vertical installs draw one side of board, and elevator motor is close to the bottom surface of drawing the board, and the lift lead screw is fixed on elevator motor's output shaft, the lift lead screw with the length direction mutually perpendicular of drive lead screw, elevator threaded connection are on the lift lead screw, and the scale passes through the bolt to be installed and draws one side of board face at the elevator orientation, and the length direction of scale and the length direction of lift lead screw are parallel to each other, and the scale is close to a side of drawing the board and draws board face contact.

Through adopting above-mentioned technical scheme, the scale more makes things convenient for people to draw on drawing the board, and elevator motor can drive the lift lead screw and rotate, and the lift lead screw can drive the elevator and remove, and the elevator removes and can drive the scale and remove, and people can come the position of control scale through the positive and negative commentaries on classics of control motor, makes people need not to grip the scale when drawing again, and is more laborsaving.

The utility model discloses further set up to: and a cladding is arranged on the upper circle of the drawing plate, the cladding covers the lifting motor, the lifting screw rod, the fixing plate, the driving motor and the back of the drawing plate, and a top plate of the cladding covers the driving screw rod.

Through adopting above-mentioned technical scheme, the cladding can provide better protection for drawing board, elevator motor, lift lead screw, fixed plate, driving motor etc. also enables this utility model moreover and looks more pleasing to the eye.

The utility model discloses further set up to: install on the involucrum and be used for the bearing subassembly of clearance pole, the bearing subassembly includes bearing rod and bearing piece, and the bearing rod is installed on the involucrum, and the length of bearing rod equals with the distance between the involucrum both sides face, and the bearing rod is located the clearance pole and keeps away from draw one side of board face, the top surface of bearing rod is flat mutually with the top surface of drawing the board, and the bearing piece is provided with a plurality ofly, and a plurality of bearing piece rotates to be connected on the bottom surface of bearing rod, rotates the bearing piece and can make the clearance pole rotate to drawing the board top.

Through adopting above-mentioned technical scheme, need receive the clearance pole when drawing, when needs are received the clearance pole, rotate the clearance pole and change the clearance pole to drawing the board top, later rotate the bearing piece on the bearing pole, make the bearing piece hold up the clearance pole and drawing the board top, when needs use the clearance pole, when changeing the bearing piece from the clearance pole, can put down the clearance pole.

The utility model discloses further set up to: the storage hole has been seted up on the involucrum, and the storing hole is kept away from elevator motor is provided with the storing storehouse in the storing hole, and the hole wall mounting in storing hole is used for the lid to close the lid door in storing hole, and the lid door rotates to be connected on the pore wall of both sides about the storing hole, and one side that the lid door is close to the storing storehouse is fixed with the magnetic stripe, installs on the one side pore wall that the lid door junction was kept away from in the storing hole and is used for preventing that the lid door from changeing to the blend stop in the storing storehouse, and one side that the storing storehouse was kept away from to the blend stop also is fixed with the magnetic stripe, and the.

Through adopting above-mentioned technical scheme, can place some teaching aids in the storing storehouse, make things convenient for people to use, the magnetic stripe both can make the lid door light lid close the storing storehouse under the effect of not exerting power, can make people again when exerting the power of outer pulling to the lid door, very light pull open lid storing storehouse door opening department, prevent that the thing in the storing storehouse from losing.

The utility model discloses further set up to: the top of the enclosure is provided with a portable handle, and one side of the cover door, which is far away from the storage bin, is provided with an opening and closing handle.

Through adopting above-mentioned technical scheme, portable handle more makes things convenient for people to carry and takes this utility model, and the handle that opens and shuts more makes things convenient for people to open and shut and covers the door.

The utility model discloses further set up to: the scale extends to the length of drawing a part of board face equals with the horizontal length who draws the face that the board demonstrates, the length that the clearance pole extends to drawing a part of board face equals with the vertical length who draws the face that the board demonstrates.

Through adopting above-mentioned technical scheme, the scale can make things convenient for people to draw more, and need not to worry that scale length is not enough, and the clearance pole can carry out more comprehensive wiping to drawing the board, avoids appearing omitting when erasing the economic figure of drawing on the board.

To sum up, the utility model discloses a beneficial technological effect does:

1. the automatic cleaning mechanism can clean the drawing board, the driving motor drives the driving screw rod to rotate, the driving screw rod drives the movable plate to move, the movable plate drives the cleaning rod to sweep the surface of the drawing board through the adjusting and fixing mechanism, the sweeping piece on the cleaning rod is abutted to the surface of the drawing board, when the cleaning rod sweeps the surface of the drawing board, the sweeping piece can complete the cleaning of the surface of the drawing board, and further the economic drawing and other characters on the drawing board are cleared, people only need to control the driving motor to rotate in the whole process, the drawing board does not need to be manually cleaned, and the labor is saved easily;

2. the adjusting and fixing mechanism can position the cleaning rod, and the cleaning rod is prevented from rotating on the connecting plate due to the friction force between the sweeping piece and the drawing board surface when moving;

3. the position of the marker post on the drawing board can be controlled by the scale mechanism through controlling the rotation of the lifting motor, so that people do not need to manually set a scale any more, and people can save more effort when drawing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of portion A of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the scale mechanism;

fig. 5 is a schematic sectional structure at the storage bin.

In the figure, 1, a drawing plate, 2, an automatic cleaning mechanism, 3, a scale mechanism, 21, a driving motor, 22, a driving screw rod, 23, a cleaning rod, 24, a sweeping piece, 11, a fixing plate, 221, a moving plate, 4, an adjusting and fixing mechanism, 41, a connecting plate, 42, a rotating shaft, 43, a fixing rod, 44 and L-shaped reinforcing clamps, 411, a rotating groove, 5, a fixing piece, 51, a positioning block, 52, a magnet block, 431, a pulling piece, 31, a lifting motor, 32, a lifting screw rod, 33, a lifting block, 34, a scale, 6, an enclosure, 61, a hand-held handle, 7, a supporting assembly, 71, a supporting rod, 72, a supporting piece, 62, a storage hole, 63, a storage bin, 621, a cover door, 64, a magnetic strip, 622, a baffle strip, 623 and an opening and closing handle are arranged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, 2 and 4, a drawing show board for economics includes a drawing board 1, and an automatic cleaning mechanism 2 and a scale mechanism 3 for assisting drawing are arranged on the drawing board 1, wherein the automatic cleaning mechanism 2 is convenient for cleaning the drawing board 1.

Automatic clearance mechanism 2 includes driving motor 21, drive lead screw 22, clearance pole 23 and sweep piece 24, driving motor 21 is installed and is being painted 1 top, driving motor 21 is close to the one end of painting board 1, the one end of driving motor 21 is kept away from at the drawing board top is fixed with fixed plate 11, drive lead screw 22 is fixed on driving motor 21's output shaft, driving motor 21 was kept away from to drive lead screw 22 one end and fixed plate 11 fixed connection, threaded connection has movable plate 221 on the drive lead screw 22, clearance pole 23 is installed on movable plate 221 through adjusting fixed establishment 4.

Referring to fig. 1 and 3, the adjusting and fixing mechanism 4 includes a connecting plate 41, a rotating shaft 42, a fixing rod 43 and L-shaped reinforcing clips 44, the connecting plate 41 is fixedly connected to one side of the moving plate 221 facing the surface of the drawing board 1, the connecting plate 41 extends out of the top surface of the drawing board 1 on the moving plate 221, one side of the connecting plate 41 close to the surface of the drawing board 1 is provided with a rotating groove 411, inner walls of two sides of the rotating groove 411 penetrate through two sides of the connecting plate 41, one end of the cleaning rod 23 is rotatably connected into the rotating groove 411 through the rotating shaft 42, the fixing rod 43 is rotatably connected to two sides of the connecting plate 41, L-shaped reinforcing clips 44 are fixed to two sides of the connecting plate 41, the fixing rods 43 and L-shaped reinforcing clips 44 on the same side of the connecting plate 41 are respectively located on two sides of a notch on the side of the rotating groove 411, the fixing rod 43 is rotated to a position between the L-shaped reinforcing clip 44 and the connecting plate 41 and is located at a position on a position of the L-shaped reinforcing clip 44 through a fixing member 5, two sides.

The fixing piece 5 comprises a positioning block 51 and a magnet block 52, the magnet block 52 is mounted on the upper side and the lower side of the fixing rod 43, the magnet block 52 is also mounted on the clamping bottom surface of the L-shaped reinforcing clamp 44, the positioning block 51 is fixed on the two sides of the moving plate 221, the positioning block 51 corresponds to the fixing rod 43 on the same side, the positioning block 51 is located above the rotating end of the fixing rod 43, the positioning block 51 is close to the moving plate 221, the magnet block 52 is mounted on one side of the positioning block, which is far away from the moving plate 221, a wrench piece 431 is fixed at one end of the fixing rod 43, which is far away from the rotating position, the wrench piece 431 can enable the fixing rod 43 to rotate, when the fixing rod 43 rotates, the fixing rod can be attracted to the positioning block 51 through the magnet.

The length direction of clearance pole 23 and the length direction mutually perpendicular of drive lead screw 22, the face of board 1 is painted to the one side orientation of clearance pole 23, sweep piece 24 is fixed on clearance pole 23 is close to one side face of drawing board 1, sweep piece 24 is kept away from one side of clearance pole 23 and is contradicted with the face of drawing board 1, sweep piece 24 can choose for use for the cotton flannel piece, when needs clean drawing board 1 face, rotate dead lever 43 and make dead lever 43 and L shape reinforcement checkpost 44 actuation, dead lever 43 just can block clearance pole 23, and then avoid when removing clearance pole 23, clearance pole 23 takes place to rotate.

Referring to fig. 1 and 4, the scale mechanism 3 includes a lifting motor 31, a lifting screw rod 32, a lifting block 33 and a scale 34, the lifting motor 31 is vertically installed on one side of the drawing board 1, the lifting motor 31 is close to the bottom surface of the drawing board 1, the lifting screw rod 32 is fixed on the output shaft of the lifting motor 31, the lifting screw rod 32 is perpendicular to the length direction of the driving screw rod 22, the lifting block 33 is in threaded connection with the lifting screw rod 32, the scale 34 is installed on one side of the lifting block 33 facing the surface of the drawing board 1 through a bolt (not shown in the figure), the length direction of the scale 34 is parallel to the length direction of the lifting screw rod 32, and one side of the scale 34 close to the drawing board 1 is in surface.

The length of the ruler 34 extending to a part of the surface of the drawing board 1 is equal to the transverse length of the surface of the drawing board 1, and the length of the cleaning rod 23 extending to a part of the surface of the drawing board 1 is equal to the vertical length of the surface of the drawing board 1. The staff gauge 34 can be more convenient for people to draw pictures, and people do not need to worry about that the length of the staff gauge 34 is not enough, the cleaning rod 23 can more comprehensively wipe the drawing board 1, and omission is avoided when the economic drawings on the drawing board 1 are erased.

Referring to fig. 1 and 2, a cladding 6 is arranged on the drawing board 1, the cladding 6 covers the lifting motor 31, the lifting screw 32, the fixing plate 11, the driving motor 21 and the back of the drawing board 1, and the top plate of the cladding 6 is covered above the driving screw 22. The cladding 6 can provide better protection for drawing board 1, elevator motor 31, lift lead screw 32, fixed plate 11, driving motor 21 etc. also can increase this utility model's pleasing to the eye degree moreover. The top of the cladding 6 is provided with a handle 61, which is more convenient for people to carry and take the utility model.

The housing 6 is provided with a supporting member 7 for supporting the cleaning rod 23, and the supporting member 7 includes a supporting rod 71 and a supporting piece 72. The supporting rod 71 is transversely fixed on the cladding 6, the length of the supporting rod 71 is equal to the distance between two side surfaces of the cladding 6, the supporting rod 71 is positioned on one side of the cleaning rod 23, which is far away from the surface of the drawing plate 1, and the top surface of the supporting rod 71 is level with the top surface of the drawing plate 1. The supporting sheets 72 are provided with a plurality of supporting sheets 72 which are rotatably connected to the bottom surface of the supporting rod 71, and the cleaning rod 23 can be rotated to the position above the drawing board 1 by rotating the supporting sheets 72. When needs get up clearance pole 23, when rotating clearance pole 23 to drawing board 1 top, rotate bearing piece 72, make bearing piece 72 hold up clearance pole 23 and can realize the recovery of clearance pole 23, make things convenient for people to draw on drawing board 1 and write, also made things convenient for the removal of scale 34 simultaneously.

Referring to fig. 1 and 5, a storage hole 62 is formed in the front surface of the enclosure 6, the storage hole 62 is far away from the lifting motor 31, and a storage bin 63 formed by splicing a plurality of storage plates is installed in the storage hole 62. The hole wall of the storage hole 62 is provided with a cover door 621 used for covering the storage hole 62, namely the opening of the storage chamber 63, two ends of the cover door 621 are rotatably connected to the hole walls of the upper side and the lower side of the storage hole 62, and the position where the cover door 621 is rotatably connected with the hole wall of the storage hole 62 is far away from the drawing board 1. One side that lid door 621 is close to storing storehouse 63 is fixed with magnetic stripe 64, installs on the one side pore wall that lid door 621 junction was kept away from in storage hole 62 and is used for preventing that lid door 621 from changeing the blend stop 622 in storing storehouse 63, and one side that storing storehouse 63 was kept away from to blend stop 622 also is fixed with magnetic stripe 64, and lid door 621 closes storing storehouse 63 through two magnetic stripes 64 covers. The cover door 621 is provided with an opening and closing handle 623 at one side far away from the storage bin 63, so that people can open and close the cover door 621 more conveniently.

The implementation principle of the embodiment is as follows: when people use the utility model, the utility model can be directly carried by the handle 61, which is more convenient;

if a user needs to draw a picture on the drawing board 1 and needs to use the horizontal ruler 34, the lifting motor 31 can be started, the lifting motor 31 drives the lifting screw rod 32 to rotate, the lifting block 33 in threaded connection with the lifting screw rod 32 moves along with the lifting screw rod, the lifting block 33 drives the ruler 34 to extend out of the drawing board 1 from the bottom of the cladding 6 and move up and down along with the lifting block 33, and people can control the position of the ruler 34 by controlling the lifting motor 31, so that the user can draw the picture conveniently;

when people need to clean the economic figures or characters on the drawing board 1, the supporting sheet 72 is rotated, the cleaning rod 23 is put down from the upper part of the drawing board 1, the cleaning rod 23 is in a vertical state, then the pulling sheet 431 is pulled, the pulling sheet 431 drives the fixed rod 43 to leave from the positioning block 51 and rotate on the side face of the connecting plate 41 until the fixed rod rotates to the clamping position of the L-shaped reinforcing clamp 44 and is attracted with the magnet block 52 on the reinforcing clamp, at the moment, the fixed rod 43 can prevent the cleaning rod 23 from rotating on the connecting plate 41, then the driving motor 21 is started, the driving motor 21 drives the driving screw rod 22 to rotate, the driving screw rod 22 drives the moving plate 221 to move, and further drives the cleaning rod 23 to move on the board surface of the drawing board 1, the sweeping sheet 24 on the cleaning rod 23 and the board surface of the drawing board 1 are cleaned when the cleaning rod 23 moves, the sweeping sheet 24 wipes the board surface of the drawing board 1, the economic figures and characters on the drawing board 1 can be cleaned easily by people without cleaning the drawing board 1 by manpower, and the drawing board 1;

after the drawing board 1 is wiped, the cleaning rod 23 is moved to the leftmost end or the rightmost end of the drawing board 1 through the driving motor 21, then the driving motor 21 is closed, the pulling piece 431 is pulled to enable the fixing rod 43 to rotate to the positioning block 51 to enable the fixing rod 43 to be attracted with the positioning block 51, then the cleaning rod 23 is rotated, the cleaning rod 23 rotates to the upper side of the drawing board 1, the bearing piece 72 is rotated to enable the bearing piece 72 to support the cleaning rod 23, and the cleaning rod 23 is prevented from rotating downwards from the upper side of the drawing board 1 to influence drawing or writing of people;

people can also pull open the cover door 621 through opening and closing the handle 623 when using this utility model to put some teaching articles for use or drawing instrument that often use in the storing storehouse 63, when needs use, open the cover door 621 take out the use can, need not additionally to carry.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A drawing show board for economics, includes drawing board (1), its characterized in that: the automatic cleaning mechanism (2) convenient for cleaning the drawing board (1) and the scale mechanism (3) assisting in drawing are arranged on the drawing board (1), the automatic cleaning mechanism (2) comprises a driving motor (21), a driving screw rod (22), a cleaning rod (23) and a sweeping piece (24), the driving motor (21) is installed at the top of the drawing board (1), the driving motor (21) is close to one end of the drawing board (1), a fixing plate (11) is fixed at one end, far away from the driving motor (21), of the top of the drawing board, the driving screw rod (22) is fixed on an output shaft of the driving motor (21), one end, far away from the driving motor (21), of the driving screw rod (22) is fixedly connected with the fixing plate (11), a movable plate (221) is in threaded connection with the driving screw rod (22), the cleaning rod (23) is installed on the movable plate (221) through an adjusting and fixing mechanism (4), the length direction of the cleaning rod (23) is mutually perpendicular to the length direction of the driving screw rod, the one side of clearance pole (23) is towards the face of drawing board (1), sweeps piece (24) and fixes on clearance pole (23) is close to the face of one side of drawing board (1), sweeps piece (24) and keeps away from one side of clearance pole (23) and contradicts with the face of drawing board (1).

2. The drawing display board for economics according to claim 1, wherein the adjusting and fixing mechanism (4) comprises a connecting board (41), a rotating shaft (42), a fixing rod (43) and a L-shaped reinforcing clip (44), the connecting board (41) is fixedly connected to one side of the moving board (221) facing the board surface of the drawing board (1), the connecting board (41) extends out of the top surface of the drawing board (1) on the moving board (221), a rotating groove (411) is formed in one side of the connecting board (41) close to the board surface of the drawing board (1), inner walls of two sides of the rotating groove (411) penetrate through two sides of the connecting board (41), one end of the cleaning rod (23) is rotatably connected with the rotating groove (411) through the rotating shaft (42), the fixing rod (43) is rotatably connected with two sides of the connecting board (41), the L-shaped reinforcing clip (44) is fixed on two sides of the connecting board (41), the fixing rod (43) and the L-shaped reinforcing clip (44) of the connecting board (41) are respectively located at two sides of the notch of the side surface of the rotating groove (411), and the fixing rod (43) is positioned at the side of the two reinforcing clip (539) and the fixing rod (36).

3. The drawing display board for economics according to claim 2, wherein the fixing piece (5) comprises a positioning block (51) and a magnet block (52), the magnet block (52) is installed on both upper and lower sides of the fixing rod (43), the magnet block (52) is also installed on the clamping bottom surface of the L-shaped reinforcing clip (44), the positioning block (51) is fixed on both sides of the moving plate (221), the positioning block (51) corresponds to the fixing rod (43) on the same side, the positioning block (51) is located above the rotating end of the fixing rod (43), the positioning block (51) is close to the moving plate (221), the magnet block (52) is installed on one side of the positioning plate far away from the moving plate (221), and the fixing rod (43) can be attracted to the L-shaped reinforcing clip (44) or the positioning block (51) through the magnet block (52).

4. A pictorial display board for economics, according to claim 3 wherein: scale mechanism (3) include elevator motor (31), lift lead screw (32), elevator (33) and scale (34), and elevator motor (31) is vertical to be installed draw one side of board (1), and elevator motor (31) are close to the bottom surface of drawing board (1), and lift lead screw (32) are fixed on the output shaft of elevator motor (31), lift lead screw (32) with the length direction mutually perpendicular of drive lead screw (22), elevator (33) threaded connection is on lift lead screw (32), and scale (34) are installed through the bolt and are being painted one side of board (1) face in elevator (33) orientation, and the length direction of scale (34) is parallel to each other with the length direction of lift lead screw (32), and a side that scale (34) are close to drawing board (1) contacts with drawing board (1) face.

5. A pictorial display board for economics, according to claim 4 wherein: an enclosure (6) is arranged on the upper ring of the drawing plate (1), the enclosure (6) covers the lifting motor (31), the lifting screw rod (32), the fixing plate (11), the driving motor (21) and the back surface of the drawing plate (1), and a top plate of the enclosure (6) is covered above the driving screw rod (22).

6. A pictorial display board for economics, according to claim 5 wherein: the device comprises a shell (6), a supporting component (7) used for supporting a cleaning rod (23) is installed on the shell (6), the supporting component (7) comprises a supporting rod (71) and supporting pieces (72), the supporting rod (71) is installed on the shell (6), the length of the supporting rod (71) is equal to the distance between two side faces of the shell (6), the supporting rod (71) is located on one side, away from the cleaning rod (23), of the surface of a drawing plate (1), the top face of the supporting rod (71) is parallel to the top face of the drawing plate (1), the supporting pieces (72) are arranged in a plurality, the supporting pieces (72) are rotatably connected to the bottom face of the supporting rod (71), and the cleaning rod (23) can be rotated to the position above the drawing plate (1) by rotating the supporting pieces (72).

7. A pictorial display board for economics, according to claim 5 wherein: storage hole (62) have been seted up on involucrum (6), storing hole (62) are kept away from elevator motor (31), be provided with storing storehouse (63) in storing hole (62), the hole wall mounting of storing hole (62) is used for closing lid door (621) of storing hole (62), lid door (621) rotate to be connected on the pore wall of both sides about storing hole (62), one side that lid door (621) are close to storing storehouse (63) is fixed with magnetic stripe (64), install on one side pore wall of lid door (621) junction is kept away from in storing hole (62) and be used for preventing that lid door (621) from changeing blend stop (622) in storing storehouse (63), one side that storing storehouse (63) were kept away from in blend stop (622) also is fixed with magnetic stripe (64), lid door (621) close storing storehouse (63) through two magnetic stripe (64).

8. A pictorial display board for economics, according to claim 7 wherein: a hand-held handle (61) is installed at the top of the enclosure (6), and an opening and closing handle (623) is installed on one side, away from the storage bin (63), of the cover door (621).

9. A pictorial display board for economics, according to claim 7 wherein: scale (34) extend draw the length of the partly of board (1) face and draw the horizontal length of the face that board (1) demonstrates to equal, clearance rod (23) extend draw the length of the partly of board (1) face and draw the vertical length of the face that board (1) demonstrates to equal.