1. The utility model provides an investment financing flow teaching show sand table which characterized in that, including:

the device comprises a mechanical base (1), wherein a transparent baffle (2) is arranged on one side of the mechanical base (1);

the bearing side plate (3), the bearing side plate (3) is hinged on the mechanical base (1);

the hinged fixing rods (4), the hinged fixing rods (4) are symmetrically hinged and installed between the bearing side plate (3) and the mechanical base (1);

the starting button (51), the starting button (51) is installed on the mechanical base (1);

a stop button (52), wherein the stop button (52) is installed on the mechanical base (1);

the stress push rod (6), the stress push rod (6) is installed on the mechanical base (1);

the driving mechanism (7) is arranged on the mechanical base (1) and used for providing power;

and the moving mechanism (8) is arranged between the driving mechanism (7) and the mechanical base (1) and is used for moving.

2. The investment financing process teaching demonstration sand table as claimed in claim 1, wherein the driving mechanism (7) comprises:

the servo motor (71), the servo motor (71) is installed on the mechanical base (1);

the slotting driving shaft (72), the slotting driving shaft (72) is rotatably installed on the mechanical base (1), and the slotting driving shaft (72) is fixedly connected with an output shaft of the servo motor (71);

a sliding sleeve (74), the sliding sleeve (74) being slidably mounted on the slotted drive shaft (72);

and the driving gear (75), and the driving gear (75) is installed on the sliding sleeve (74).

3. The investment financing process teaching demonstration sand table as claimed in claim 2, wherein the moving mechanism (8) comprises:

the meshing driving wheel (81), the meshing driving wheel (81) is rotatably arranged on the slotted driving shaft (72), and the meshing driving wheel (81) is matched with the driving gear (75);

the driving worm (83), the driving worm (83) is installed on the mechanical base (1) in a rotating mode;

the driving belt assembly (82), the driving belt assembly (82) is installed between the driving worm (83) and the meshing driving wheel (81);

the gear driven rods (84) are provided, the number of the gear driven rods (84) is three, the gear driven rods (84) are arranged on the mechanical base (1) in an interval rotating mode, and the gear driven rods (84) are meshed with the driving worm (83);

the moving belt component (85), the moving belt component (85) is symmetrically arranged on the three driven rods (84) with gears;

the protective baffle (86), the protective baffle (86) is installed on the mechanical base (1) symmetrically;

the steering wheel (87), the steering wheel (87) is installed on the mechanical base (1) in a symmetrical and rotating mode.

4. The investment financing process teaching demonstration sand table as claimed in claim 3, further comprising a rotating mechanism (9), wherein the rotating mechanism (9) comprises:

the electric push rod (91), the electric push rod (91) is installed on the mechanical base (1);

the connecting plate (92), the connecting plate (92) is installed on the electric push rod (91), and the connecting plate (92) is fixedly connected with the sliding sleeve (74);

the driving bevel gear (93), the driving bevel gear (93) is installed on the sliding sleeve (74);

the fixed short rod (95), the fixed short rod (95) is installed on the mechanical base (1) in a rotating mode;

the driven bevel gear (94), the driven bevel gear (94) is installed on the fixed short rod (95), the driven bevel gear (94) is matched with the driving bevel gear (93);

the long fixing rod (97), the long fixing rod (97) is symmetrically and rotatably arranged on the mechanical base (1);

the transmission belt assembly (96), the transmission belt assembly (96) is installed between one of the long fixing rods (97) and the short fixing rod (95);

the tooth-missing belt assembly (98), the tooth-missing belt assembly (98) is installed between two long fixing rods (97);

the hexagonal transmission shaft (910), the hexagonal transmission shaft (910) is symmetrically and rotatably installed on the mechanical base (1);

the transmission toothed column (99), the transmission toothed column (99) is installed on the hexagonal transmission shaft (910), and the transmission toothed column (99) is matched with the toothless belt assembly (98);

the transmission rotating shaft frame (911), the transmission rotating shaft frame (911) is rotatably arranged on the mechanical base (1);

the reversing bevel gear assembly (912), the reversing bevel gear assembly (912) is installed between the hexagonal transmission shaft (910) and the transmission shaft bracket (911);

the rotary transmission gear (913), the rotary transmission gear (913) is symmetrically installed on the transmission rotating shaft frame (911);

the fixed upright post (918), the fixed upright post (918) is installed on the mechanical base (1) symmetrically;

the rotary fluted disc (914), the rotary fluted disc (914) is rotatably installed on the fixed upright post (918), and the rotary fluted disc (914) is meshed with the rotary transmission gear (913);

the article placing rack (915), the article placing rack (915) is arranged on the rotary fluted disc (914) in a sliding way;

the guide rod (916), the guide rod (916) is installed on the shelf (915);

a shielding plate (917), wherein the shielding plate (917) is arranged on the rotary fluted disc (914);

and the switching button (919), wherein the switching button (919) is installed on the mechanical base (1).

5. The investment financing process teaching demonstration sand table as claimed in claim 4, further comprising a lifting mechanism (10), wherein the lifting mechanism (10) comprises:

the laser pen (101), the laser pen (101) is placed on the mechanical base (1);

the first photoelectric sensor (102), the first photoelectric sensor (102) is installed on the mechanical base (1);

the second photoelectric sensor (103), the second photoelectric sensor (103) is installed on the mechanical base (1);

the booster pump (104), the booster pump (104) is installed on the mechanical base (1);

the first spherical electromagnetic valve (106), the first spherical electromagnetic valve (106) is installed on the mechanical base (1);

the lifting floating plate (107), the lifting floating plate (107) is symmetrically and slidably installed on the mechanical base (1), and the lifting floating plate (107) on the same side is fixedly connected with the storage rack (915);

the return spring (108), the return spring (108) is installed on lifting floating plate (107);

a first pressure sensor (109), wherein the first pressure sensor (109) is arranged on one of the lifting floating plates (107);

the second pressure sensor (1010), the second pressure sensor (1010) is installed on another lifting floating plate (107);

the second spherical electromagnetic valve (1011), the second spherical electromagnetic valve (1011) is installed on the mechanical base (1);

and the air guide pipes (105) are respectively arranged between the booster pump (104) and the two lifting floating plates (107) and are communicated.

6. The investment financing process teaching demonstration sand table as claimed in claim 5, further comprising a clamping mechanism (11), wherein the clamping mechanism (11) comprises:

the positioning plate (111), the positioning plate (111) is installed on the rotary fluted disc (914);

the rubber fixing disc (112) is slidably mounted on the storage rack (915), and the rubber fixing disc (112) is in sliding fit with the positioning plate (111);

the lifting T-shaped block (113), the lifting T-shaped block (113) is arranged on the rubber fixing disc (112);

the compression spring (114), the compression spring (114) is installed between the positioning plate (111) and the lifting T-shaped block (113), and the compression spring (114) is wound on the rubber fixing plate (112);

the clamping side plates (115) are symmetrically hinged on the storage rack (915), and the clamping side plates (115) are rotationally connected with the lifting T-shaped block (113);

the positioning clamping block (116), the positioning clamping block (116) is installed on the guide rod (916) in a sliding way;

and the positioning bolt (117) is installed on the positioning clamping block (116) in a threaded manner.

7. The investment financing process teaching demonstration sand table as claimed in claim 6, further comprising a dust prevention mechanism (12), wherein the dust prevention mechanism (12) comprises:

the driving rack (121), the driving rack (121) is installed on the guide rod (916);

the positioning screw rod (123), the positioning screw rod (123) is symmetrically and rotatably arranged on the mechanical base (1);

the meshing gear (122), the meshing gear (122) is installed on the positioning screw rod (123), and the meshing gear (122) and the driving gear (75);

the sealing cover plate (124), the sealing cover plate (124) is symmetrically and slidably installed on the mechanical base (1), and the sealing cover plate (124) is in threaded connection with the positioning screw rod (123);

and the buffer spring (125), and the buffer spring (125) is arranged between the sealing cover plate (124) and the mechanical base (1).

8. The investment financing process teaching display sand table as claimed in claim 7, further comprising an electric cabinet (5), wherein the electric cabinet (5) is embedded in one side of the mechanical base (1), the electric cabinet (5) comprises a switching power supply, a power supply module and a control module, the switching power supply supplies power to the whole equipment, the power supply module is connected with a power main switch through a line, and the control module is electrically connected with the power supply module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the starting button (51), the stopping button (52), the switching button (919), the first photoelectric sensor (102), the second photoelectric sensor (103), the first pressure sensor (109) and the second pressure sensor (1010) are all electrically connected with the control module, and the electric push rod (91), the servo motor (71), the first spherical electromagnetic valve (106), the second spherical electromagnetic valve (1011) and the booster pump (104) are all connected with the control module through peripheral circuits.

Background

At present, the course of most investment financing teaching is too boring, for improving student's interest in learning, uses the teaching show sand table usually, but current teaching show sand table, the fixed structure is single, and is inconvenient to the sand table remove, and it is very troublesome to use, and if people carelessly mistake the sand table, leads to the teaching aid to empty easily.

How to design a convenience and remove, it is convenient to use, and can carry out spacing fixed investment financing flow teaching show sand table to the teaching aid to solve prior art problem.

Disclosure of Invention

In order to overcome the fixed singleness of structure, inconvenient removes the sand table, and it is very troublesome to use, and if people touch the sand table carelessly by mistake, lead to the shortcoming that teaching aid emptys easily, the technical problem who solves: the utility model provides a conveniently remove, it is convenient to use, and can carry out spacing fixed investment financing flow teaching show sand table to the teaching aid.

The technical scheme is as follows: the utility model provides an investment financing flow teaching show sand table, including: the device comprises a mechanical base, wherein a transparent baffle is arranged on one side of the mechanical base; the bearing side plate is hinged on the mechanical base; the hinged fixed rods are symmetrically hinged and arranged between the bearing side plates and the mechanical base; the starting button is arranged on the mechanical base; the stop button is arranged on the mechanical base; the stressed push rod is arranged on the mechanical base; the driving mechanism is arranged on the mechanical base and used for providing power; and the moving mechanism is arranged between the driving mechanism and the mechanical base and is used for moving.

Further, the driving mechanism includes: the servo motor is arranged on the mechanical base; the slotting driving shaft is rotatably arranged on the mechanical base and fixedly connected with an output shaft of the servo motor; the sliding sleeve is slidably mounted on the slotted driving shaft; and the driving gear is arranged on the sliding sleeve.

Further, the moving mechanism includes: the meshing driving wheel is rotatably arranged on the slotted driving shaft and matched with the driving gear; the driving worm is rotatably arranged on the mechanical base; the driving belt assembly is arranged between the driving worm and the meshing driving wheel; the three driven rods with the gears are arranged on the mechanical base in an interval rotating mode and meshed with the driving worm; the movable belt components are symmetrically arranged on the three driven rods with the gears; the protective baffle plates are symmetrically arranged on the mechanical base; the steering wheel is symmetrically and rotatably arranged on the mechanical base.

Further, still include rotary mechanism, rotary mechanism includes: the electric push rod is arranged on the mechanical base; the connecting plate is arranged on the electric push rod and fixedly connected with the sliding sleeve; the driving bevel gear is arranged on the sliding sleeve; the fixed short rod is rotatably arranged on the mechanical base; the driven bevel gear is arranged on the fixed short rod and matched with the driving bevel gear; the fixed long rod is symmetrically and rotatably arranged on the mechanical base; the transmission belt assembly is arranged between one of the long fixing rods and the short fixing rod; the tooth-missing belt component is arranged between the two long fixing rods; the hexagonal transmission shaft is symmetrically and rotatably arranged on the mechanical base; the transmission toothed column is arranged on the hexagonal transmission shaft and matched with the toothless belt assembly; the transmission rotating shaft frame is rotatably arranged on the mechanical base; the reversing bevel gear component is arranged between the hexagonal transmission shaft and the transmission rotating shaft frame; the rotary transmission gears are symmetrically arranged on the transmission rotating shaft frame; the fixed upright columns are symmetrically arranged on the mechanical base; the rotary fluted disc is rotatably arranged on the fixed upright post and is meshed with the rotary transmission gear; the storage rack is arranged on the rotary fluted disc in a sliding manner; the guide rod is arranged on the commodity shelf; the shielding plate is arranged on the rotary fluted disc; and the switching button is arranged on the mechanical base.

Further, still including elevating system, elevating system is including: the laser pen is placed on the mechanical base; the first photoelectric sensor is arranged on the mechanical base; the second photoelectric sensor is arranged on the mechanical base; the booster pump is arranged on the mechanical base; the first spherical electromagnetic valve is arranged on the mechanical base; the lifting floating plate is symmetrically and slidably arranged on the mechanical base, and the lifting floating plate on the same side is fixedly connected with the storage rack; the return spring is arranged on the lifting floating plate; the first pressure sensor is arranged on one of the lifting floating plates; the second pressure sensor is arranged on the other lifting floating plate; the second spherical electromagnetic valve is arranged on the mechanical base; and the air guide pipes are respectively arranged between the booster pump and the two lifting floating plates and are communicated with each other.

Further, still include clamping mechanism, clamping mechanism includes: the positioning plate is arranged on the rotary fluted disc; the rubber fixing disc is arranged on the storage rack in a sliding mode and is in sliding fit with the positioning plate; the lifting T-shaped block is arranged on the rubber fixing disc; the compression spring is arranged between the positioning plate and the lifting T-shaped block and is wound on the rubber fixing plate; the clamping side plates are symmetrically hinged on the storage rack and are rotationally connected with the lifting T-shaped block; the positioning clamping block is arranged on the guide rod in a sliding manner; and the positioning bolt is arranged on the positioning clamping block in a threaded manner.

Further, still including dustproof mechanism, dustproof mechanism is including: the driving rack is arranged on the guide rod; the positioning screw rod is symmetrically and rotatably arranged on the mechanical base; the meshing gear is arranged on the positioning screw rod and is connected with the driving gear; the sealing cover plates are symmetrically and slidably arranged on the mechanical base and are in threaded connection with the positioning screw rods; and the buffer spring is arranged between the sealing cover plate and the mechanical base.

The electric control cabinet is embedded in one side of the mechanical base and comprises a switching power supply, a power supply module and a control module, wherein the switching power supply supplies power to the whole equipment; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the starting button, the stopping button, the switching button, the first photoelectric sensor, the second photoelectric sensor, the first pressure sensor and the second pressure sensor are electrically connected with the control module, and the electric push rod, the servo motor, the first spherical electromagnetic valve, the second spherical electromagnetic valve and the booster pump are connected with the control module through a peripheral circuit.

The invention has the beneficial effects that:

1. according to the invention, the servo motor drives the slotting driving shaft to rotate, the slotting driving shaft rotates to enable the driven rods with the gears to rotate, the belt component is moved to enable the three driven rods with the gears to be better synchronous, the driven rods with the gears rotate to drive the device to move, and the steering wheel plays a role in guiding, so that the device can be conveniently moved and is convenient to use.

2. The invention drives the teaching tool to intermittently rotate by the intermittent rotation of the storage rack under the action of the rotating mechanism, so that the teaching tool can be better displayed.

3. According to the invention, the clamping side plates swing inwards to limit the teaching aid under the action of the clamping mechanism, so that the teaching aid can be prevented from moving.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the driving mechanism of the present invention.

Fig. 3 is an enlarged schematic view of part a of the present invention.

Fig. 4 is a partial perspective view of the moving mechanism of the present invention.

Fig. 5 is a schematic view of a first partially-separated body structure of the rotating mechanism of the present invention.

Fig. 6 is a schematic view of a second partial body structure of the rotating mechanism of the present invention.

Fig. 7 is a perspective view of a third part of the rotating mechanism of the present invention.

Fig. 8 is a schematic view of a first partially separated body structure of the lifting mechanism of the present invention.

Fig. 9 is an enlarged view of part B of the present invention.

Fig. 10 is a schematic view of a second partially separated body structure of the lifting mechanism of the present invention.

Fig. 11 is an enlarged view of part C of the present invention.

Fig. 12 is a partial perspective view of the clamping mechanism of the present invention.

Fig. 13 is an enlarged view of the portion D of the present invention.

Fig. 14 is a partial perspective view of the dustproof mechanism of the present invention.

FIG. 15 is a circuit block diagram of the present invention.

Fig. 16 is a schematic circuit diagram of the present invention.

Reference numerals: 1_ mechanical base, 2_ transparent barrier, 3_ bearing side panel, 4_ hinged fixed bar, 5_ electric cabinet, 51_ start button, 52_ stop button, 6_ stressed push rod, 7_ drive mechanism, 71_ servo motor, 72_ slotted drive shaft, 74_ sliding sleeve, 75_ drive gear, 8_ moving mechanism, 81_ meshed drive wheel, 82_ drive belt assembly, 83_ drive worm, 84_ toothed wheel driven rod, 85_ moving belt assembly, 86_ protective barrier, 87_ steering wheel, 9_ rotating mechanism, 91_ electric push rod, 92_ connecting plate, 93_ drive bevel gear, 94_ driven bevel gear, 95_ fixed short rod, 96_ drive belt assembly, 97_ fixed long rod, 98_ edentulous belt assembly, 99_ drive toothed column, 910_ hexagonal drive shaft, 911_ drive shaft bracket, 912_ reverse bevel gear assembly, 913_ rotary drive gear, 914_ rotary fluted disc, 915_ shelf, 916_ guide rod, 917_ baffle, 918_ fixed upright post, 919_ switch button, 10_ lifting mechanism, 101_ laser pen, 102_ first photoelectric sensor, 103_ second photoelectric sensor, 104_ booster pump, 105_ air guide tube, 106_ first spherical solenoid valve, 107_ lifting floating plate, 108_ reset spring, 109_ first pressure sensor, 1010_ second pressure sensor, 1011_ second spherical solenoid valve, 11_ clamping mechanism, 111_ positioning plate, 112_ rubber fixed plate, 113_ lifting T-shaped block, 114_ compression spring, 115_ clamping side plate, 116_ positioning clamping block, 117_ positioning bolt, 12_ dustproof mechanism, 121_ drive rack, 122_ meshing gear, 123_ positioning screw rod, 124_ sealing cover plate and 125_ buffer spring.

Detailed Description

The invention is further described below with reference to the figures and examples.

Example 1

The utility model provides an investment financing flow teaching show sand table, as shown in fig. 1-4, including mechanical base 1, transparent baffle 2, bearing curb plate 3, articulated dead lever 4, start button 51, stop button 52, atress push rod 6, actuating mechanism 7 and moving mechanism 8, mechanical base 1 top rigid coupling has transparent baffle 2, 1 upper portion front side of mechanical base is articulated to be equipped with bearing curb plate 3, bilateral symmetry articulated between 3 bottoms of bearing curb plate and the 1 front side of mechanical base is equipped with articulated dead lever 4, mechanical base 1 outer left side upper portion front side is equipped with start button 51, mechanical base 1 outer left side upper portion front side is equipped with stop button 52, mechanical base 1 right side upside is equipped with atress push rod 6, be equipped with actuating mechanism 7 on the mechanical base 1, be equipped with moving mechanism 8 between actuating mechanism 7 and mechanical base 1.

The driving mechanism 7 comprises a servo motor 71, a slotted driving shaft 72, a sliding sleeve 74 and a driving gear 75, the servo motor 71 is arranged at the rear part of the lower side of the right part of the mechanical base 1, the slotted driving shaft 72 is rotatably arranged at the rear part of the lower side of the right part of the mechanical base 1, the right end of the slotted driving shaft 72 is fixedly connected with an output shaft of the servo motor 71, the sliding sleeve 74 is slidably arranged at the left part of the slotted driving shaft 72, and the driving gear 75 is fixedly connected to the right part of the sliding sleeve 74 in the circumferential direction.

The moving mechanism 8 comprises an engaging driving wheel 81, a driving belt component 82, a driving worm 83, a driven rod 84 with gears, a moving belt component 85, a protective baffle 86 and a steering wheel 87, the left part of the slotted driving shaft 72 is circumferentially and rotatably provided with an engaging driving wheel 81, the engaging driving wheel 81 is matched with the driving gear 75, the rear part of the right lower side of the mechanical base 1 is rotatably provided with a driving worm 83, a driving belt component 82 is connected between the left part of the driving worm 83 and the circumferential direction of the engaging driving wheel 81, three driven rods 84 with gears are rotatably arranged at intervals on the right lower side of the mechanical base 1, the driven rods 84 with gears are engaged with the driving worm 83, the front side and the rear side of the three driven rods 84 with gears are respectively connected with a movable belt component 85, the front side and the rear side of the right lower side of the mechanical base 1 are respectively provided with a protective baffle 86, and the front side and the rear side of the left lower side of the mechanical base 1 are symmetrically and rotatably provided with a steering wheel 87.

People press a power supply main switch to electrify the display sand table, firstly, an operator can place a teaching tool on the top of a mechanical base 1, a transparent baffle plate 2 is used for protection, if the display sand table needs to be moved, the start button 51 is pressed once, the start button 51 sends a signal, a control module receives the signal and then controls a servo motor 71 to work, the servo motor 71 drives a slotted driving shaft 72 to rotate, the slotted driving shaft 72 rotates to drive a sliding sleeve 74 to rotate, the sliding sleeve 74 rotates to drive a driving gear 75 to rotate, the driving gear 75 rotates to drive a meshed driving wheel 81 to rotate, the meshed driving wheel 81 rotates to drive a driving belt assembly 82 to rotate, the driving belt assembly 82 rotates to drive a driving worm 83 to rotate, the driving worm 83 rotates to drive a toothed driven rod 84 to rotate, the belt assembly 85 is moved to enable the three toothed driven rods 84 to be better synchronized, and the toothed driven rod 84 rotates to drive the device to move, the steering wheel 87 plays a guiding role, when the sand table for display moves to a proper position, the stop button 52 is pressed once, the stop button 52 sends a signal, the control module receives the signal and controls the servo motor 71 to stop, the slotted driving shaft 72 stops driving the driving gear 75 to rotate through the sliding sleeve 74, and the driven rod 84 with the gear also stops rotating.

Example 2

Based on embodiment 1, as shown in fig. 1, 5, 6, 7, 8, 9, 10 and 11, the present invention further comprises a rotating mechanism 9, wherein the rotating mechanism 9 comprises an electric push rod 91, a connecting plate 92, a driving bevel gear 93, a driven bevel gear 94, a fixed short rod 95, a transmission belt assembly 96, a fixed long rod 97, a missing tooth belt assembly 98, a transmission toothed column 99, a hexagonal transmission shaft 910, a transmission shaft bracket 911, a reversing bevel gear assembly 912, a rotating transmission gear 913, a rotating fluted disc 914, a storage rack 915, a guide rod 916, a shielding plate 917, a fixed upright 918 and a switch button 919, the electric push rod 91 is arranged at the rear portion of the right lower side of the mechanical base 1, the connecting plate 92 is connected to the electric push rod 91, the connecting plate 92 is fixedly connected to the sliding sleeve 74, the driving bevel gear 93 is arranged at the left portion of the sliding sleeve 74, the fixed short rod 95 is rotatably arranged at the rear portion of the right lower side of the mechanical base 1, a driven bevel gear 94 is fixedly connected with the lower part of the fixed short rod 95 in the circumferential direction, the driven bevel gear 94 is matched with a driving bevel gear 93, a fixed long rod 97 is rotatably arranged in the left-right symmetrical mode in the middle part in the mechanical base 1, a transmission belt component 96 is connected between the circumferential direction of the middle part of the right fixed long rod 97 and the circumferential direction of the upper part of the fixed short rod 95, a tooth-lacking belt component 98 is connected between the circumferential directions of the upper parts of the left and right fixed long rods 97, a hexagonal transmission shaft 910 is rotatably arranged in the left-right symmetrical mode in the middle part in the mechanical base 1, a transmission tooth post 99 is fixedly connected with the circumferential direction of the upper part of the hexagonal transmission shaft 910, the transmission tooth post 99 is matched with the tooth-lacking belt component 98, a transmission shaft bracket 911 is rotatably arranged in the middle part in the mechanical base 1, a reversing bevel gear component 912 is connected between the circumferential direction of the upper part of the hexagonal transmission shaft 910 and the circumferential direction of the outer side of the transmission shaft bracket 911, rotary transmission gear 913 is fixedly connected in the circumferential direction in the left and right side of the transmission shaft bracket 911, fixed short rod 918 is provided with a fixed upright post in both sides, the upper portion of the fixed column 918 is rotatably provided with a rotating fluted disc 914, the rotating fluted disc 914 is meshed with the rotating transmission gear 913, the rotating fluted disc 914 is slidably provided with a storage rack 915, the middle of the outer side surface of the storage rack 915 is provided with a guide rod 916 in an embedded manner, the top of the rotating fluted disc 914 is fixedly connected with a baffle 917, and the upper portion of the outer left side surface of the mechanical base 1 is provided with a switching button 919.

The lifting device comprises a lifting mechanism 10, the lifting mechanism 10 comprises a laser pen 101, a first photoelectric sensor 102, a second photoelectric sensor 103, a booster pump 104, an air duct 105, a first spherical electromagnetic valve 106, a lifting floating plate 107, a reset spring 108, a first pressure sensor 109, a second pressure sensor 1010 and a second spherical electromagnetic valve 1011, the laser pen 101 is arranged on the rear side of the upper part of the outer right side surface of the mechanical base 1, the first photoelectric sensor 102 is arranged on the left side of the top of the mechanical base 1, the second photoelectric sensor 103 is arranged on the right side of the top of the mechanical base 1, the booster pump 104 is embedded on the lower part of the left part of the mechanical base 1, the first spherical electromagnetic valve 106 is arranged on the rear part of the lower part of the left part of the mechanical base 1, the second spherical electromagnetic valve 1011 is arranged on the front part of the lower part of the left part of the mechanical base 1, the lifting floating plate 107 is symmetrically arranged on the left and right of the bottom of the mechanical base 1, the lifting floating plate 107 on the same side is fixedly connected with a shelf 915, a reset spring 108 is arranged between the upper side and the lower side in the lifting floating plate 107, a first pressure sensor 109 is arranged on the left side face of the bottom in the right lifting floating plate 107, a second pressure sensor 1010 is arranged on the right side of the bottom in the left lifting floating plate 107, the booster pump 104 and the lifting floating plates 107 on the left side and the right side are both provided with air guide tubes 105 and communicated, a first spherical electromagnetic valve 106 is matched with the air guide tubes 105, and a second spherical electromagnetic valve 1011 is also matched with the air guide tubes 105.

When the display sand table is powered on, people can place teaching tools on the storage rack 915, the shielding plate 917 plays a protective role, the starting button 51 is pressed once, the starting button 51 sends a signal, the control module receives the signal and controls the servo motor 71 to work, the gear driven rod 84 rotates to drive the device to move, when the display sand table moves to a proper position, the switching button 919 is pressed once, the control module receives the signal and controls the electric push rod 91 to extend, the electric push rod 91 drives the connecting plate 92 to move leftwards, the connecting plate 92 moves leftwards to drive the sliding sleeve 74 to move leftwards, the sliding sleeve 74 moves leftwards to drive the driving gear 75 to move leftwards, the driving gear 75 moves leftwards to be disengaged from the meshing driving wheel 81, the sliding sleeve 74 moves leftwards to drive the driving bevel gear 93 to move leftwards, the driving bevel gear 93 moves leftwards to be meshed with the driven bevel gear 94, the sliding sleeve 74 rotates to drive the driving bevel gear 93 to rotate, the driving bevel gear 93 rotates to drive the driven bevel gear 94 to rotate, the driven bevel gear 94 rotates to drive the fixed short rod 95 to rotate, the fixed short rod 95 rotates to drive the transmission belt assembly 96 to rotate, the transmission belt assembly 96 rotates to drive the right fixed long rod 97 to rotate, the left and right fixed long rods 97 are matched to drive the toothless belt assembly 98 to rotate, the toothless belt assembly 98 rotates to drive the rotary transmission gear 913 to intermittently rotate, the rotary transmission gear 913 intermittently rotates to drive the hexagonal transmission shaft 910 to intermittently rotate, the hexagonal transmission shaft 910 intermittently rotates to drive the transmission shaft bracket 911 intermittently rotates through the reversing bevel gear assembly 912, the transmission shaft bracket 911 intermittently rotates to drive the rotary fluted disc 914 intermittently rotates, the rotary fluted disc 914 intermittently rotates to drive the storage rack 915 intermittently rotates, and the storage rack 915 intermittently rotates to drive the teaching tool intermittently rotates, when the display sand table is not needed to be used, the stop button 52 is pressed once, the stop button 52 sends a signal, the control module receives the signal and then controls the servo motor 71 to stop, and the control module receives the signal and then controls the electric push rod 91 to contract and reset, the driving bevel gear 93 moves rightwards and is separated from the driven bevel gear 94, the driving gear 75 also moves rightwards and resets to be in contact with the meshing driving wheel 81, and therefore teaching tools can be displayed better.

When the display sand table is electrified, the first photoelectric sensor 102, the second photoelectric sensor 103, the first pressure sensor 109 and the second pressure sensor 1010 all start to work, after the display sand table moves to a proper position, teaching tools are placed on the storage rack 915, due to the action of gravity, the storage rack 915 drives the lifting floating plate 107 to move downwards, the reset spring 108 is compressed, the lifting floating plate 107 moves downwards to be in contact with the first pressure sensor 109 and the second pressure sensor 1010, the first pressure sensor 109 sends out a signal, the control module receives the signal and then controls the first spherical electromagnetic valve 106 to be closed, the second pressure sensor 1010 sends out a signal, the control module receives the signal and then controls the second spherical electromagnetic valve 1011 to be closed, when people need to display the teaching tools, the first photoelectric sensor 102 can be irradiated by the laser pen 101, the first photoelectric sensor 102 sends out a signal, the control module receives the signal and then controls the booster pump 104 to work, after the control module receives the signal, the first spherical electromagnetic valve 106 is also controlled to be opened, the booster pump 104 inflates the right lifting floating plate 107 through the air duct 105, the right lifting floating plate 107 moves upwards to reset, the reset spring 108 plays a role in boosting, the right lifting floating plate 107 moves upwards to drive the right storage rack 915 to move upwards, and the right teaching tool moves upwards, similarly, the second photoelectric sensor 103 is irradiated through the laser pen 101, the second photoelectric sensor 103 sends a signal, the control module receives the signal to control the second spherical electromagnetic valve 1011 to be opened, the booster pump 104 inflates the left lifting floating plate 107 through the air duct 105, the left teaching tool moves upwards, when the display sand table is not needed to be used, the stop button 52 is pressed once, the stop button 52 sends a signal, the control module receives the signal and then controls the booster pump 104 to stop, and the storage rack drives the lifting floating plate 107 to move downwards due to the action of gravity, the lifting floating plate 107 moves downwards again to be in contact with the first pressure sensor 109 and the second pressure sensor 1010, the first pressure sensor 109 sends a signal, the control module receives the signal and then controls the first spherical electromagnetic valve 106 to be closed, the second pressure sensor 1010 sends a signal, and the control module receives the signal and then controls the second spherical electromagnetic valve 1011 to be closed. Thus, better teaching can be achieved.

Example 3

On the basis of the embodiment 1 and the embodiment 2, as shown in fig. 12 to 14, the clamping device 11 is further included, the clamping device 11 includes a positioning plate 111, a rubber fixing plate 112, a lifting T-shaped block 113, the rotary storage rack comprises a compression spring 114, clamping side plates 115, a positioning clamping block 116 and a positioning bolt 117, a positioning plate 111 is fixedly connected to the outer top of a rotary fluted disc 914, a rubber fixing disc 112 is slidably arranged at the circle center position of a storage rack 915, the rubber fixing disc 112 is in sliding fit with the positioning plate 111, a lifting T-shaped block 113 is fixedly connected to the lower portion of the rubber fixing disc 112, the compression spring 114 is arranged between the top of the positioning plate 111 and the inner side face of the lifting T-shaped block 113, the compression spring 114 is wound on the rubber fixing disc 112, the clamping side plates 115 are hinged to the front side and the rear side of the storage rack 915, the clamping side plates 115 are rotatably connected with the lifting T-shaped block 113, the positioning clamping block 116 is slidably arranged on a guide rod 916, and the positioning bolt 117 is threadedly arranged outside the positioning clamping block 116.

Still including dustproof mechanism 12, dustproof mechanism 12 is including drive rack 121, meshing gear 122, positioning screw 123, sealed apron 124 and buffer spring 125, the guide bar 916 lateral surface is equipped with drive rack 121, the mechanical base 1 upper portion left and right sides all rotary type is equipped with positioning screw 123, positioning screw 123 middle part circumference rigid coupling has meshing gear 122, meshing gear 122 and drive gear 75, mechanical base 1 upper portion left and right sides all front and back symmetry slidingtype is equipped with sealed apron 124, sealed apron 124 and positioning screw 123 threaded connection, be equipped with buffer spring 125 between sealed apron 124 medial surface and the mechanical base 1 is inside.

When the teaching aid is placed on the storage rack 915, the rubber fixing disc 112 moves downwards due to the action of gravity, the rubber fixing disc 112 moves downwards to drive the lifting T-shaped block 113 to move downwards, the compression spring 114 is compressed, the lifting T-shaped block 113 moves downwards to enable the clamping side plate 115 to swing inwards, the clamping side plate 115 swings inwards to limit the teaching aid, the position of the positioning clamping block 116 is adjusted according to the requirement, the positioning clamping block 116 is fixed through the positioning bolt 117, the teaching aid is limited through the positioning clamping block 116 after the position of the positioning clamping block 116 is adjusted, when the display sand table is not needed to be used, the positioning clamping block 116 is opened to take down the teaching aid, the lifting T-shaped block 113 drives the rubber fixing disc 112 to move upwards to reset under the action of the compression spring 114, and the clamping side plate 115 also swings outwards to reset, so that the teaching aid can be prevented from moving.

When the rubber fixing disc 112 moves downwards, the rubber fixing disc 112 drives the guide rod 916 to move downwards, the guide rod 916 moves downwards to drive the driving rack 121 to move downwards, the driving rack 121 moves downwards to drive the meshing gear 122 to rotate inwards, the meshing gear 122 rotates inwards to drive the positioning screw rod 123 to rotate inwards, the positioning screw rod 123 rotates inwards to enable the sealing cover plate 124 to move inwards, the buffer spring 125 plays a buffering role, the sealing cover plate 124 moves inwards to protect the mechanical base 1, and similarly, when the rubber fixing disc 112 drives the guide rod 916 to move upwards to reset, the sealing cover plate 124 also moves outwards to reset. Therefore, dust or impurities can be prevented from entering the mechanical base 1.

As shown in fig. 1, 15 and 16, the electric cabinet 5 is further included, the electric cabinet 5 is embedded in the upper side of the left part of the mechanical base 1, a switching power supply, a power supply module and a control module are included in the electric cabinet 5, the switching power supply supplies power to the whole equipment, the power supply module is connected with a power supply main switch through a circuit, and the control module is electrically connected with the power supply module; the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the start button 51, the stop button 52, the switch button 919, the first photoelectric sensor 102, the second photoelectric sensor 103, the first pressure sensor 109 and the second pressure sensor 1010 are all electrically connected with the control module, and the electric push rod 91, the servo motor 71, the first spherical electromagnetic valve 106, the second spherical electromagnetic valve 1011 and the booster pump 104 are all connected with the control module through peripheral circuits.

While the disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Accordingly, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined not only by the appended claims, but also by equivalents thereof.