CN111816049B - A show sand table for public management teaching - Google Patents
A show sand table for public management teaching Download PDFInfo
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- CN111816049B CN111816049B CN202010822776.7A CN202010822776A CN111816049B CN 111816049 B CN111816049 B CN 111816049B CN 202010822776 A CN202010822776 A CN 202010822776A CN 111816049 B CN111816049 B CN 111816049B
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- 239000004576 sand Substances 0.000 title claims abstract description 107
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 239000011521 glass Substances 0.000 claims description 30
- 230000000149 penetrating effect Effects 0.000 claims description 26
- 238000005381 potential energy Methods 0.000 claims description 3
- 241000826860 Trapezium Species 0.000 claims description 2
- 210000002421 cell wall Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 26
- 230000008569 process Effects 0.000 abstract description 21
- 238000010586 diagram Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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Abstract
The invention discloses a display sand table for public management teaching, which comprises a supporting plate, wherein the middle part of the upper end of the supporting plate is fixedly connected with a connecting seat, the middle part of the connecting seat is connected with a rotating device in an inserting manner, the front part and the rear part of the outer surface of the rotating device are respectively connected with a transmission device in an engaging manner, the left parts and the right parts of the two transmission devices are respectively connected with a pushing device in an inserting manner, the left end and the rear end of the supporting plate are respectively and fixedly connected with two supporting legs, the lower ends of the four supporting legs are respectively and fixedly connected with a moving wheel, the upper parts of the four supporting legs are respectively and movably sleeved with lifting columns, the upper ends of the four lifting columns are jointly and fixedly connected with a sand table seat, and the front part of the upper end of the sand table seat is connected with a model supporting plate in a sliding manner. The display sand table for public management teaching can quickly adjust the height of the sand table, the adjusting process is stable and stable, and the model support plate can be quickly replaced, so that the display function of the whole sand table can be improved, and the teaching quality is improved.
Description
Technical Field
The invention relates to the technical field of public management, in particular to a display sand table for public management teaching.
Background
Public management is a management philosophy and management model created for government-managed flaws. On one hand, the method emphasizes the 'commonality' of a management target, namely that public power must fulfill public functions, on the other hand, the method emphasizes the supervision, restriction and standardization of the public power, and emphasizes the scientific method for applying the public power, and in the public management teaching process, a display sand table is usually adopted as an auxiliary tool for public management teaching, in the display sand table technology of the existing public management teaching, the sand table is single in structure, the height adjustment of the sand table cannot be realized by adopting a modern automatic adjustment structure, so that the display effect of the content in the sand table is influenced in the teaching process, the teaching quality is influenced, and the display sand table for the public management teaching in the prior art adopts a fixed structure, the replacement process of different display content models is complicated, the balance of the sand table is difficult to control by manually adjusting the height, and the placing structure in the sand table is damaged, the inertia generated by the traditional electric adjustment at the moment of stopping can also damage the placing structure in the sand table, so that a structure capable of stably adjusting the height of the sand table is needed.
Disclosure of Invention
The invention mainly aims to provide a display sand table for public management teaching, which can effectively adjust the height of the sand table and keep the stability of the structure in the sand table.
In order to achieve the purpose, the invention adopts the technical scheme that:
a display sand table for public management teaching comprises a supporting plate, wherein the middle part of the upper end of the supporting plate is fixedly connected with a connecting seat, the middle part of the connecting seat is alternately connected with a rotating device, the front part and the rear part of the outer surface of the rotating device are respectively connected with a transmission device in a meshing manner, the left parts and the right parts of the two transmission devices are respectively alternately connected with a pushing device, the left end and the rear end of the supporting plate are respectively fixedly connected with two supporting legs, the lower ends of the four supporting legs are respectively fixedly connected with a moving wheel, the upper parts of the four supporting legs are respectively and movably sleeved with lifting columns, one ends of the four pushing devices, which are far away from the transmission devices, are respectively and alternately connected with the lower parts of the four lifting columns, the upper ends of the four lifting columns are jointly and fixedly connected with a sand table seat, the front part of the upper end of the sand table seat is slidably connected with a model supporting plate, and the rear part of the upper end of the sand table seat is clamped with two limiting blocks, the limiting block is tightly attached to the rear end of the model carrier plate, the upper end of the sand plate seat is fixedly connected with a glass frame, the model carrier plate is positioned in the glass frame, and the front end, the left end, the right end and the upper end of the glass frame are all embedded with glass plates;
the upper end of the supporting leg is provided with a movable groove, the front end and the rear end of the supporting leg are provided with connecting grooves communicated with the interior of the movable groove, and the supporting leg is movably connected with the lifting column through the movable groove;
the pushing device comprises a connecting ring and a fastening nut, the connecting ring is sleeved on the outer surface of the connecting shaft and is fixedly connected with the movable rod through the connecting shaft, the axis of the connecting ring corresponds to the middle position of the connecting groove, a plurality of jacking grooves are uniformly formed in the periphery of the outer ring of the connecting shaft, which is in contact with the connecting ring, a connecting rod is fixedly connected with the outer surface of the connecting ring, one end of the connecting rod, which is far away from the connecting ring, is fixedly connected with a pushing block, the left end of the pushing block is provided with a penetrating groove which penetrates through the left end and the right end, a through groove is formed in the connecting rod, a first ejector rod and a second ejector rod are arranged through the through groove, the first ejector rod and the second ejector rod are connected through a first spring, the first ejector rod penetrates through the pushing block and is inserted into the inserting groove, a fixing plate is arranged on the second ejector rod, a second spring with two ends connected to the fixing plate and the connecting ring is sleeved on the second ejector rod, the second ejector rod penetrates through the tail end of the connecting ring and is provided with a dome raised head, the dome raised head is in clearance fit with the top position groove, the left part of the lower end and the right part of the lower end of the lifting column are fixedly connected with two connecting vertical plates, a penetrating and inserting shaft is fixedly connected between the two connecting vertical plates, the pushing block penetrates through the connecting groove and is located in the movable groove, the pushing block and the penetrating and inserting shaft are connected in a penetrating and inserting mode through the penetrating and inserting groove (the pushing block and the lower end face of the lifting column are not in contact, and when the penetrating and inserting shaft moves to the highest point of the penetrating and inserting groove, elastic potential energy of the first spring and the second spring is released to drive the dome raised head to be completely separated from the top position groove.
As a further improvement of the above scheme, the rotating device includes a motor, the motor is fixedly mounted at the lower end of the connecting seat, the output end of the motor penetrates through the connecting seat and is fixedly connected with the turbine rod, a middle penetrating groove which penetrates through the upper end and the lower end is formed in the middle of the upper end of the supporting plate, and the motor is located in the middle penetrating groove.
As a further improvement of the above scheme, the transmission device comprises a movable rod, the left end and the right end of the movable rod are fixedly connected with connecting shafts, the outer surface of the movable rod is fixedly connected with rotating wheels, the two transmission devices are symmetrically distributed around the movable rod, and the two rotating wheels are respectively meshed with the front part of the outer surface of the turbine rod and the rear part of the outer surface of the turbine rod.
As a further improvement of the above scheme, the upper left portion and the upper right portion of the supporting plate are both fixedly connected with two first supporting blocks, the upper end of the connecting seat is fixedly connected with four second supporting blocks, the movable rod is movably connected to the upper portions of the two transverse first supporting blocks and the two transverse second supporting blocks through bearings, the rotating wheel is located between the two transverse second supporting blocks, and the rotating wheel is not in contact with the connecting seat.
As a further improvement of the above scheme, two sliding blocks of the lower extreme fixedly connected with of model support plate, two the sliding block is the trapezium structure, open the upper end of sand dish seat has two sliding trays, and the sliding tray runs through the preceding terminal surface of sand dish seat, sliding block sliding connection is in the sliding tray, the next fixedly connected with limiting plate in the rear end of sand dish seat, open the upper end of limiting plate has two spacing grooves.
As a further improvement of the above scheme, the upper end face of the limiting plate is lower than the lower groove wall of the sliding groove, the limiting blocks are respectively clamped in the two limiting grooves, and the front end faces of the limiting blocks are respectively tightly attached to the rear end faces of the two sliding blocks.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the rotating device is in transmission connection with the two transmission devices, so that the angle adjustment of the pushing device fixedly connected to the transmission devices can be realized, the lifting column can be pulled or pushed to slide on the supporting leg in the angle adjustment process of the pushing device, and the height adjustment of the whole sand table fixedly arranged on the lifting column is realized, so that the teaching contents in the sand table are displayed more comprehensively, and the teaching quality is improved.
2. According to the sand table, the model carrier plate and the limiting blocks are movably connected through the specific sliding grooves and the sliding blocks, the model carrier plate is limited by the two limiting blocks, the model carrier plate is quickly installed and detached, the connection stability of the model carrier plate is high, the replacement of a display model in the sand table is facilitated, and the sand table is convenient to operate.
3. In the invention, the connection structure of the whole sand table device has high transmission, close connection, strong functionality and high flexibility, and is suitable for public management teaching.
4. According to the sand table lifting device, the stability of the whole sand table lifting process can be improved through the first spring, the second spring, the dome raised head and the top position groove, so that the lifting process is smoother, and the phenomenon that the arrangement structure in the sand table is damaged in the sand table lifting process is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a sand table for public management teaching according to the present invention;
FIG. 2 is a schematic diagram of the overall structure of a sand table for public management teaching according to the present invention;
FIG. 3 is a schematic view of the connection between the rotating device and the transmission device of the sand table for public management teaching according to the present invention;
FIG. 4 is a schematic structural diagram of a pushing device of a display sand table for public management teaching according to the present invention;
FIG. 5 is a schematic view of a connection structure of a pushing device and a lifting column of a display sand table for public management teaching according to the present invention;
FIG. 6 is a schematic view of the connection between the driving device and the pushing device of the sand table for public management teaching according to the present invention;
FIG. 7 is a schematic diagram of a sand table base for displaying a sand table for public management teaching according to the present invention;
FIG. 8 is a schematic diagram of a model carrier plate structure of a display sand table for public management teaching according to the present invention;
FIG. 9 is a schematic cross-sectional view of a sand table display pushing device for public management teaching according to the present invention;
FIG. 10 is a schematic diagram of a movable rod structure of a sand table for public management teaching according to the present invention;
FIG. 11 is a schematic view of the rotation state of a pushing device of a sand table for public management teaching according to the present invention.
In the figure: 1. a support plate; 2. a connecting seat; 3. supporting legs; 4. a rotating device; 5. a transmission device; 6. a pushing device; 7. a lifting column; 8. a sand table seat; 9. a model support plate; 10. a limiting block; 11. a glass frame; 12. a glass plate; 13. a moving wheel; 14. a middle through groove; 15. a first supporting block; 21. a second supporting block; 31. a movable groove; 32. connecting grooves; 41. a motor; 42. a turbine rod; 51. a movable rod; 52. a rotating wheel; 53. a connecting shaft; 54. a top position groove; 61. a connecting ring; 62. fastening a nut; 63. a connecting rod; 64. a pushing block; 65. inserting the slot; 66. a first ejector rod; 67. a first spring; 68. a second ejector rod; 69. a fixing plate; 610. a first spring; 611. a domed nose; 71. connecting a vertical plate; 72. inserting the shaft; 81 a sliding groove; 82. a limiting plate; 83. a limiting groove; 91. and a slider.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical scheme of the invention is further explained by combining the attached drawings.
Example one
A show sand table for public management teaching is disclosed, as shown in figure 1-2, comprising a supporting plate 1, wherein the middle part of the upper end of the supporting plate 1 is fixedly connected with a connecting seat 2, the middle part of the connecting seat 2 is connected with a rotating device 4 in an inserting way, the front part and the rear part of the outer surface of the rotating device 4 are respectively connected with a transmission device 5 in an engaging way, the left parts and the right parts of the two transmission devices 5 are respectively connected with a pushing device 6 in an inserting way, the left end and the rear end of the supporting plate 1 are respectively connected with two supporting legs 3 in a fixedly connected way, the lower ends of the four supporting legs 3 are respectively connected with a moving wheel 13 in a fixedly connected way, the upper parts of the four supporting legs 3 are respectively sleeved with a lifting column 7 in a moving way, one ends of the four pushing devices 6 far away from the transmission devices 5 are respectively connected with the lower parts of the four lifting columns 7 in an inserting way, the upper ends of the four lifting column supporting plates 7 are jointly connected with a sand table seat 8, and the front part of the upper end of the sand table seat 8 is connected with a model 9 in a sliding way, the upper end rear portion joint of sand table seat 8 has two stopper 10, and stopper 10 hugs closely the rear end of model support plate 9, and the upper end fixedly connected with glass frame 11 of sand table seat 8, and model support plate 9 is located glass frame 11, and glass board 12 has all been rabbeted to front end, left end, right-hand member and the upper end of glass frame 11.
In the concrete use process of the embodiment, a model carrier plate 9 with teaching contents is connected on a sand table seat 8 in a sliding way through a sliding groove and a sliding block in a quick connection way, and is limited and fixed through two limiting blocks 10, the model carrier plate 9 can be quickly and stably clamped in a glass frame 11, the front end, the left end, the right end and the upper end of the glass frame 11 are provided with glass plates 12, on one hand, the glass plates are beneficial to being watched by a learner in the display process, on the other hand, the model carrier plate 9 in the glass frame 11 can be protected, the rear end of the glass frame 11 is in a hollow state, the model carrier plate 9 is convenient to be quickly installed and replaced, when the height of the display sand table needs to be adjusted in public management teaching, two transmission devices 5 in transmission connection with the surface of a rotating device 4 can synchronously rotate by controlling the rotating device 4 to rotate, and simultaneously realize the change of angles with a plurality of pushing devices 6 fixed on the transmission devices 5, thereby drag lift post 7 and realize sliding in supporting leg 3, accomplish the altitude mixture control of whole sand table, whole structure linkage nature is strong, easy operation is convenient, and the flexibility is high, can be more effectual the display function of improvement sand table in the public management teaching, and the installation of model support plate 9 is convenient fast, is fit for the use in the public management teaching.
Example two
On the basis of the first embodiment, as shown in fig. 3-6, a display sand table for public management teaching comprises a supporting plate 1, wherein the middle part of the upper end of the supporting plate 1 is fixedly connected with a connecting seat 2, the middle part of the connecting seat 2 is connected with a rotating device 4 in an inserting way, the front part and the rear part of the outer surface of the rotating device 4 are respectively connected with a transmission device 5 in a meshing way, the left part and the right part of the two transmission devices 5 are respectively connected with a pushing device 6 in an inserting way, the left end and the rear end of the supporting plate 1 are respectively connected with two supporting legs 3 in a fixed way, the lower ends of the four supporting legs 3 are respectively connected with a moving wheel 13 in a fixed way, the upper parts of the four supporting legs 3 are respectively sleeved with a lifting column 7 in a moving way, one ends of the four pushing devices 6 far away from the transmission devices 5 are respectively connected with the lower parts of the four lifting columns 7 in an inserting way, the upper ends of the four lifting columns 7 are jointly connected with a sand table seat 8 in a fixed way, and the front part of the upper end of the sand table seat 8 is connected with a model supporting plate 9 in a sliding way, the rear part of the upper end of the sand disc seat 8 is clamped with two limiting blocks 10, the limiting blocks 10 are tightly attached to the rear end of the model carrier plate 9, the upper end of the sand disc seat 8 is fixedly connected with a glass frame 11, the model carrier plate 9 is positioned in the glass frame 11, and glass plates 12 are embedded at the front end, the left end, the right end and the upper end of the glass frame 11; the rotating device 4 comprises a motor 41, the motor 41 is fixedly installed at the lower end of the connecting seat 2, the output end of the motor 41 penetrates through the connecting seat 2 and is fixedly connected with a turbine rod 42, a middle penetrating groove 14 which penetrates through the upper end and the lower end is formed in the middle of the upper end of the supporting plate 1, and the motor 41 is located in the middle penetrating groove 14; the transmission devices 5 comprise movable rods 51, the left end and the right end of each movable rod 51 are fixedly connected with connecting shafts 53, the outer surfaces of the movable rods 51 are fixedly connected with rotating wheels 52, the two transmission devices 5 are symmetrically distributed in the front-back direction, and the two rotating wheels 52 are respectively meshed and connected with the front parts of the outer surfaces and the rear parts of the outer surfaces of the turbine rods 42; the left part of the upper end and the right part of the upper end of the supporting plate 1 are both fixedly connected with two first supporting blocks 15, the upper end of the connecting seat 2 is fixedly connected with four second supporting blocks 21, the movable rod 51 is movably connected to the upper parts of the two transverse first supporting blocks 15 and the two transverse second supporting blocks 21 through bearings, the rotating wheel 52 is positioned between the two transverse second supporting blocks 21, and the rotating wheel 52 is not contacted with the connecting seat 2; the pushing device 6 comprises a connecting ring 61 and a fastening nut 62, the connecting ring 61 is sleeved on the outer surface of the connecting shaft 53 and is fixedly connected with the movable rod 51 through the connecting shaft 53, the outer surface of the connecting ring 61 is fixedly connected with a connecting rod 63, one end, far away from the connecting ring 61, of the connecting rod 63 is fixedly connected with a pushing block 64, and the left end of the pushing block 64 is provided with a penetrating groove 65 penetrating left and right; the left part and the right part of the lower end of the lifting column 7 are both fixedly connected with two connecting vertical plates 71, and a penetration shaft 72 is fixedly connected between the two connecting vertical plates 71; the upper end of the supporting leg 3 is provided with a movable groove 31, the front end and the rear end of the supporting leg 3 are provided with connecting grooves 32 communicated with the interior of the movable groove 31, and the supporting leg 3 is movably connected with the lifting column 7 through the movable groove 31; the pushing block 64 penetrates through the connecting groove 32, is positioned in the movable groove 31 and is penetrated and connected with the penetrating and inserting shaft 72, and the pushing block 64 is not contacted with the lower end surface of the lifting column 7.
In the specific use process of the embodiment, when the height of the sand table needs to be adjusted, the motor 41 is controlled to work through the external control system, the turbine rod 42 rotates under the driving of the motor 41, so as to drive the two rotating wheels 52 in front of and behind the outer surface of the turbine rod 42 to rotate synchronously, so that the two movable rods 51 movably connected to the first supporting block 15 and the second supporting block 21 rotate, because the outer surfaces of the connecting shafts 53 at the left and right ends of the two movable rods 51 are fixedly connected with the connecting rings 61 through the fastening nuts 62, in the rotating process of the movable rods 51, the connecting rods 63 and the pushing blocks 64 incline angularly, when the included angle between the connecting rods 63 and the supporting plate 1 is larger, the pushing blocks 64 push the inserting shafts 72 fixedly connected to the lower ends of the lifting columns 7 to lift upwards, so as to drive the whole lifting columns 7 to slide in the movable grooves 31 on the supporting legs 3, four lift posts 7 change in step, thereby accomplish the high condition of whole sand table, in this process, two rotate the wheel 52 all not with connecting seat 2 contact, ensure to rotate the normal operating of wheel 52, go-between 61 passes through fastening nut 62 and movable rod 51 fixed connection, convenient to detach, promote the piece 64 not with the lower terminal surface contact of lift post 7, and promote the piece 64 not with the inner wall contact of activity groove 31 and spread groove 32, reduce the friction in the activity process, whole height control in-process, the connection between the structure is close, the transmissibility is high, can be fast effectual with the better display of the teaching content in the sand table, be favorable to improving bandwagon effect and teaching efficiency.
EXAMPLE III
On the basis of the first embodiment, as shown in fig. 7-8, a display sand table for public management teaching comprises a supporting plate 1, wherein the middle part of the upper end of the supporting plate 1 is fixedly connected with a connecting seat 2, the middle part of the connecting seat 2 is connected with a rotating device 4 in an inserting way, the front part and the rear part of the outer surface of the rotating device 4 are respectively connected with a transmission device 5 in a meshing way, the left part and the right part of the two transmission devices 5 are respectively connected with a pushing device 6 in an inserting way, the left end and the rear end of the supporting plate 1 are respectively connected with two supporting legs 3 in a fixed way, the lower ends of the four supporting legs 3 are respectively connected with a moving wheel 13 in a fixed way, the upper parts of the four supporting legs 3 are respectively sleeved with a lifting column 7 in a moving way, one ends of the four pushing devices 6 far away from the transmission devices 5 are respectively connected with the lower parts of the four lifting columns 7 in an inserting way, the upper ends of the four lifting columns 7 are jointly connected with a sand table seat 8, and the front part of the upper end of the sand table seat 8 is connected with a model supporting plate 9 in a sliding way, the rear part of the upper end of the sand disc seat 8 is clamped with two limiting blocks 10, the limiting blocks 10 are tightly attached to the rear end of the model carrier plate 9, the upper end of the sand disc seat 8 is fixedly connected with a glass frame 11, the model carrier plate 9 is positioned in the glass frame 11, and glass plates 12 are embedded at the front end, the left end, the right end and the upper end of the glass frame 11; the lower end of the model carrier plate 9 is fixedly connected with two sliding blocks 91, the two sliding blocks 91 are both of a trapezoidal structure, the upper end of the sand tray seat 8 is provided with two sliding grooves 81, the sliding grooves 81 penetrate through the front end face of the sand tray seat 8, the sliding blocks 91 are connected in the sliding grooves 81 in a sliding manner, the lower part of the rear end of the sand tray seat 8 is fixedly connected with a limiting plate 82, and the upper end of the limiting plate 82 is provided with two limiting grooves 83; the upper end face of the limiting plate 82 is lower than the lower groove wall of the sliding groove 81, the two limiting blocks 10 are respectively clamped in the two limiting grooves 83, and the front end faces of the two limiting blocks 10 are respectively tightly attached to the rear end faces of the two sliding blocks 91.
In the specific use process of the embodiment, when the model carrier plate 9 attached with different teaching contents needs to be replaced, the model carrier plate 9 can be quickly slid out from the sand table seat 8 by taking out the two limit blocks 10, the model carrier plate 9 with new teaching contents is connected into the two sliding grooves 81 through the two sliding blocks 91 in a sliding manner, when the rear end of the model carrier plate 9 and the rear end of the sand table seat 8 are just flush, the two limit blocks 10 are respectively placed into the two limit grooves 83, the two sliding blocks 91 and the two sliding grooves 81 are both in a trapezoidal structure, because the positions of the two limit grooves 83 just correspond to the positions of the sliding grooves 81, the two limit blocks 10 respectively and simultaneously abut against the two sliding blocks 91 and the model carrier plate 9, on one hand, the quick disassembly and the installation of the model carrier plate 9 can be realized, the stability of the model carrier plate 9 can be improved in the aspect of interest, and simultaneously, the upper end of the glass frame 11 on the sand table seat 8, Front end, left end and right-hand member all are provided with clear glass, can play the guard action to model support plate 9, and quick replacement can be realized to whole sand table teaching content, and easy operation, and stability is high, is favorable to improving the teaching quality.
Example four
On the basis of the first embodiment, in order to further improve the stability of the lifting process of the sand table and avoid damaging the placing structure in the sand table, as shown in fig. 9-10, the display sand table for public management teaching comprises a supporting plate 1, a connecting seat 2 is fixedly connected to the middle part of the upper end of the supporting plate 1, a rotating device 4 is connected to the middle part of the connecting seat 2 in an inserting manner, transmission devices 5 are respectively connected to the front part and the rear part of the outer surface of the rotating device 4 in an engaging manner, pushing devices 6 are respectively connected to the left part and the right part of the two transmission devices 5 in an inserting manner, each pushing device 6 comprises a connecting ring 61 and a fastening nut 62, the connecting ring 61 is sleeved on the outer surface of a connecting shaft 53 and is fixedly connected with a movable rod 51 through the connecting shaft 53, a plurality of top grooves 54 are uniformly formed in the periphery of the outer ring of the connecting shaft 53 in contact with the connecting ring 61, the outer surface of the connecting ring 61 is fixedly connected with a connecting rod 63, one end of the connecting rod 63, which is far away from the connecting ring 61, is fixedly connected with a pushing block 64, the left end of the pushing block 64 is provided with a penetrating groove 65 which penetrates through from left to right, a through groove is arranged in the connecting rod 63, a first ejector rod 66 and a second ejector rod 68 are arranged through the through groove, the first ejector rod 66 and the second ejector rod 68 are connected through a first spring 67, the moving distance of the penetrating shaft 72 in the penetrating groove 65 is obviously greater than the depth of the dome raised head 611 inserted in the jacking groove 54, the first spring 67 connected between the first ejector rod 66 and the second ejector rod 68 can compress the redundant feeding amount of the penetrating shaft 72 in the penetrating groove 65 to avoid the ejector rods from being broken, the first ejector rod 66 penetrates through the pushing block 64 and is inserted in the penetrating groove 65, a fixing plate 69 is arranged on the second ejector rod 68, the fixing plate 69 is used for limiting the through groove of the connecting rod 63, a second spring 610 with two ends connected on the fixing plate 69 and the connecting ring 61 is sleeved on the second ejector rod 68, the second top bar 68 is provided with a dome projection 611 penetrating through the end of the connecting ring 61, the dome projection 611 is in clearance fit with the top groove 54, so that the dome projection 611 is smoothly inserted into the top groove 54, and further the connecting ring 61 and the movable rod 51 rotate synchronously, so that the movable rod 51 drives the connecting ring 61 to rotate synchronously when rotating, further the pushing block 64 can push the insertion shaft 72 fixedly connected to the lower end of the lifting column 7 to lift or lower upwards, when the second top bar 68 is not stressed, the dome projection 611 can be smoothly separated from the top groove 54 under the action of the second spring 610, so that the movable rod 51 idles, the left part and the right part of the lower end of the lifting column 7 are fixedly connected with two connecting vertical plates 71, the insertion shaft 72 is fixedly connected between the two connecting vertical plates 71, the pushing block 64 penetrates through the connecting groove 32, is located in the movable groove 31 and is connected with the insertion shaft 72 through the insertion groove 65, the pushing block 64 is not in contact with the lower end surface of the lifting column 7, and the axis of the connecting ring 61 corresponds to the middle position of the connecting groove 32, so that when the connecting rod 63 rotates to the horizontal position, the inserting shaft 72 is close to the nearest end of the inserting groove 65, and the positions of the lifting column 7, which are raised to the highest position and lowered to the lowest position, are symmetrical relative to the horizontal position of the connecting rod 63.
In the specific use process of the embodiment, as shown in fig. 11, a is a state when the lifting column 7 is lifted to the highest point, B is a state when the lifting column 7 is lifted to the lowest point, the rotation angles of the connecting rods 63 in the two states are maximum and are symmetrical with respect to the connecting rod 63 in the horizontal state, at this time, the insertion shaft 72 moves to the highest point of the insertion groove 65, the elastic potential energy of the first spring 67 and the second spring 610 is released, the dome raised head 611 is completely separated from the top groove 54, at this time, the movable rod 51 idles, no torsion is applied to the connecting rod 63, a hard pulling force is prevented from being generated on the supporting leg 3 by the torsion force when the lifting column 7 moves to the limit position, the sand table is shaken integrally, the stability of the sand table is ensured, because the dome raised head 611 and the top groove 54 start to generate the slipping phenomenon gradually in the process that the dome raised head 611 is separated from the top groove 54 gradually, and the rotation speed of the connecting rod 63 is further reduced, the lifting column 7 plays a good role in buffering when rising to the highest point or the lowest point, so that the lifting process is smoother, and the stability of the sand table lifting process is greatly improved.
In the comprehensive embodiment, the rotating device 4 is in transmission connection with the two transmission devices 5, so that the angle adjustment of the pushing device 6 fixedly connected to the transmission devices 5 can be realized, the lifting column 7 can be pulled or pushed to slide on the supporting leg 3 in the angle adjustment process of the pushing device 6, and the height adjustment of the whole sand table fixedly arranged on the lifting column 7 is never realized, so that the teaching contents in the sand table are displayed more comprehensively; the model carrier plate 9 and the limiting blocks 10 are movably connected through the specific sliding grooves and the sliding blocks, and the model carrier plate 9 is limited by the two limiting blocks 10, so that the model carrier plate 9 is quickly mounted and dismounted, the replacement of a display model in a sand table is facilitated, and the operation is convenient; through first spring 67 and second spring 610, dome plush 611 and top position groove 54 can improve the stability of whole sand table lift in-process, and the connection structure transmission nature of whole sand table equipment is high, connects closely, and functional strong, stability is high, is favorable to improving the teaching quality, is fit for the use of public management teaching.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A show sand table for public management teaching, includes layer board (1), its characterized in that: the middle part of the upper end of the supporting plate (1) is fixedly connected with a connecting seat (2), the middle part of the connecting seat (2) is connected with a rotating device (4) in an inserting manner, the front part and the rear part of the outer surface of the rotating device (4) are respectively connected with a transmission device (5) in a meshing manner, the left part and the right part of the two transmission devices (5) are respectively connected with a pushing device (6) in an inserting manner, the left end and the rear end of the supporting plate (1) are respectively and fixedly connected with two supporting legs (3), the lower ends of the four supporting legs (3) are respectively and fixedly connected with a moving wheel (13), the upper parts of the four supporting legs (3) are respectively and movably sleeved with lifting columns (7), one ends, far away from the transmission devices (5), of the four pushing devices (6) are respectively connected with the lower parts of the four lifting columns (7) in an inserting manner, and the upper ends of the four lifting columns (7) are jointly and fixedly connected with a sand plate seat (8), the sand disc seat is characterized in that a model carrier plate (9) is connected to the front part of the upper end of the sand disc seat (8) in a sliding mode, two limiting blocks (10) are clamped to the rear part of the upper end of the sand disc seat (8), the limiting blocks (10) are tightly attached to the rear end of the model carrier plate (9), the upper end of the sand disc seat (8) is fixedly connected with a glass frame (11), the model carrier plate (9) is located in the glass frame (11), and glass plates (12) are embedded in the front end, the left end, the right end and the upper end of the glass frame (11);
the upper end of the supporting leg (3) is provided with a movable groove (31), the front end and the rear end of the supporting leg (3) are provided with connecting grooves (32) communicated with the interior of the movable groove (31), and the supporting leg (3) is movably connected with the lifting column (7) through the movable groove (31);
the pushing device (6) comprises a connecting ring (61) and a fastening nut (62), the connecting ring (61) is sleeved on the outer surface of a connecting shaft (53) and is fixedly connected with a movable rod (51) through the connecting shaft (53), the axis of the connecting ring (61) corresponds to the middle position of a connecting groove (32), a plurality of jacking grooves (54) are uniformly formed in the periphery of the outer ring of the connecting shaft (53) in contact with the connecting ring (61), a connecting rod (63) is fixedly connected to the outer surface of the connecting ring (61), a pushing block (64) is fixedly connected to one end, far away from the connecting ring (61), of the connecting rod (63), a penetrating groove (65) penetrating left and right is formed in the left end of the pushing block (64), a through groove is formed in the connecting rod (63), a first ejector rod (66) and a second ejector rod (68) are arranged through the through groove, and the first ejector rod (66) and the second ejector rod (68) are connected through a first spring (67), the first ejector rod (66) penetrates through the pushing block (64) and is inserted into the inserting groove (65), the second ejector rod (68) is provided with a fixed plate (69), the fixed plate (69) is positioned in the through groove of the limiting connecting rod (63), the second ejector rod (68) is sleeved with a second spring (610) with two ends connected to the fixed plate (69) and the connecting ring (61), the second ejector rod (68) penetrates through the tail end of the connecting ring (61) and is provided with a dome raised head (611), the dome raised head (611) is in clearance fit with the top position groove (54), the left part and the right part of the lower end of the lifting column (7) are fixedly connected with two connecting vertical plates (71), a penetrating shaft (72) is fixedly connected between the two connecting vertical plates (71), the pushing block (64) penetrates through the connecting groove (32) and is positioned in the movable groove (31) and is connected with the penetrating shaft (72) in a penetrating way through the inserting groove (65), the pushing block (64) is not in contact with the lower end face of the lifting column (7), and when the inserting shaft (72) moves to the highest point of the inserting groove (65), the elastic potential energy of the first spring (67) and the second spring (610) is released to drive the dome raised head (611) to be completely separated from the top groove (54).
2. A display sand table for public management instruction as claimed in claim 1, wherein: rotating device (4) include motor (41), motor (41) fixed mounting is at the lower extreme of connecting seat (2), the output of motor (41) runs through connecting seat (2) and fixedly connected with turbine pole (42), the upper end middle part of layer board (1) is opened has well wearing groove (14) of break-through from top to bottom, motor (41) are located well wearing groove (14).
3. A display sand table for public management instruction as claimed in claim 1, wherein: transmission (5) include movable rod (51), the equal fixedly connected with connecting axle (53) of left end and right-hand member of movable rod (51), the outer fixed surface of movable rod (51) is connected with and rotates wheel (52), two transmission (5) are front and back symmetric distribution, and two rotate wheel (52) mesh respectively and connect at the anterior and surface rear portion of the surface of turbine rod (42).
4. A display sand table for public management instruction as claimed in claim 3, wherein: the upper end left part and the upper end right part of layer board (1) equal two supporting shoe (15) of fixedly connected with, the upper end fixedly connected with four No. two supporting shoe (21) of connecting seat (2), movable rod (51) pass through bearing swing joint in horizontal two supporting shoe (15) and horizontal two supporting shoe (21) upper portions, it is located between two horizontal No. two supporting shoe (21) to rotate wheel (52), and rotates wheel (52) and connecting seat (2) contactless.
5. A display sand table for public management instruction as claimed in claim 1, wherein: two sliding blocks (91) of lower extreme fixedly connected with of model support plate (9), two sliding block (91) are the trapezium structure, open the upper end of sand dish seat (8) has two sliding tray (81), and sliding tray (81) run through the preceding terminal surface of sand dish seat (8), sliding block (91) sliding connection is in sliding tray (81), a rear end lower fixedly connected with limiting plate (82) of sand dish seat (8), open the upper end of limiting plate (82) has two spacing grooves (83).
6. A display sand table for public management instruction as claimed in claim 1, wherein: the up end of limiting plate (82) is less than the lower cell wall of sliding tray (81), two stopper (10) joint respectively in two spacing grooves (83), and two the rear end face of two sliding blocks (91) is hugged closely respectively to the preceding terminal surface of stopper (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010822776.7A CN111816049B (en) | 2020-08-17 | 2020-08-17 | A show sand table for public management teaching |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010822776.7A CN111816049B (en) | 2020-08-17 | 2020-08-17 | A show sand table for public management teaching |
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| CN111816049B true CN111816049B (en) | 2021-10-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112419861A (en) * | 2020-11-05 | 2021-02-26 | 德州职业技术学院（德州市技师学院） | Psychological sand table-based teaching aid for psychology |
| CN112951065B (en) * | 2021-01-29 | 2022-03-22 | 日照职业技术学院 | Sand table tool box for psychological consultation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20190318663A1 (en) * | 2018-04-17 | 2019-10-17 | Carlos Ortiz | Portable and collapsible sand table |
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| CN206293083U (en) * | 2016-11-01 | 2017-06-30 | 河南机电高等专科学校 | A kind of embedded Venture projects displaying sand table device |
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| WO2019033763A1 (en) * | 2017-08-18 | 2019-02-21 | 成都慕课科技有限公司 | Public management method based on simulated sand table, and training platform |
| CN108230873A (en) * | 2018-03-15 | 2018-06-29 | 周珏伟 | A kind of rotatable building sand table externally shown for sales office |
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