A financial statement teaching simulation sand table

Abstract

The utility model belongs to the technical field of simulation sand table, especially a kind of financial statement teaching simulation sand table, including support backing plate, magnetic attraction soft cloth and telescopic support, be provided with a plurality of locating rod on support backing plate, magnetic attraction soft cloth is placed on support backing plate by first locating hole, the free end of locating rod is threadedly connected with limiting nut, magnetic attraction soft cloth is in contact with limiting nut, limiting can be carried out to magnetic attraction soft cloth by the locating rod of being set, limiting nut of being set can be with magnetic attraction soft cloth fixed in inner recess, so as to use, avoid magnetic attraction soft cloth from inner recess and fall off when using, user can also place transparent baffle in inner recess, protection can be carried out to magnetic attraction soft cloth by the transparent baffle of being set, avoid magnetic attraction soft cloth damage, while transparent baffle can extrude magnetic attraction soft cloth, make magnetic attraction soft cloth more flat, support backing plate is hung in telescopic support by hanging and inserting structure, to expand the writing area of teacher on blackboard.

Description

Technical Field

[0001] This utility model belongs to the field of simulation sand table technology, and in particular relates to a financial statement teaching simulation sand table. Background Technology

[0002] In traditional finance education, the conventional teaching method involves placing a magnetic cloth printed with financial area divisions on the blackboard to create an intuitive platform for displaying financial data. During the lecture, instructors or students can use magnetic digital prop cards, attaching them to the cloth to visually demonstrate the flow of funds and related data distribution under different financial categories. This allows students to quickly compare various financial data, deepening their understanding of financial knowledge, concepts, and financial processing procedures, and better comprehending the logical relationships between data within and between financial statements. However, frequent placement or adjustment of the magnetic digital cards can cause the magnetic cloth to shift due to external forces, resulting in wrinkles that affect the visual effect. This requires users to spend extra time smoothing it out. Secondly, since the magnetic cloth occupies a significant portion of the blackboard, the already limited writing space is further reduced, leaving instructors with insufficient blank space to write key points or provide further explanations. Summary of the Invention

[0003] (a) Technical problems to be solved This invention provides a financial statement teaching simulation sandbox to solve the following problems.

[0004] 1. Frequent placement or adjustment of magnetic number cards will cause the magnetic cloth attached to the blackboard to move due to external forces, requiring users to spend extra time to re-flatten it. 2. After the magnetic soft cloth is laid, it will occupy a considerable part of the blackboard area, resulting in the instructor lacking enough blank area to write key knowledge points during the explanation.

[0005] (II) Technical Content To achieve the above objectives, this utility model provides the following technical solution: A financial statement teaching simulation sandbox includes a support pad and a magnetic soft cloth. The support pad is provided with multiple positioning rods, and the magnetic soft cloth is provided with multiple first positioning holes corresponding to the positioning rods. The magnetic soft cloth is placed on the support pad through the first positioning holes. The free end of the positioning rod is threadedly connected to a limit nut, and the magnetic soft cloth is in contact with the limit nut. It also includes telescopic supports, with support pads mounted on the telescopic supports via a hook-and-loop structure.

[0006] Furthermore, an inner groove is provided on one side of the support pad, and positioning rods are fixed at the four corners of the inner wall of the inner groove. The magnetic soft cloth is adapted to the inner groove, and the magnetic soft cloth is placed in the inner groove. The first positioning hole opened on the magnetic soft cloth is sleeved on the corresponding positioning rod.

[0007] Furthermore, a transparent baffle is provided on the side of the magnetic soft cloth away from the support pad. The transparent baffle has multiple second positioning holes corresponding to the positioning rods. The transparent baffle is inserted into the inner groove, and the second positioning holes on the transparent baffle are sleeved on the corresponding positioning rods. One side of the magnetic soft cloth is in contact with the inner wall of the inner groove, and the other side is in contact with the transparent baffle. The free end of the positioning rod extends into a second positioning hole, and the limiting nut is threadedly connected to the free end of the positioning rod, and the limiting nut is in contact with the transparent baffle.

[0008] Furthermore, there are two sets of support pads, which are connected by a bidirectional connector. The bidirectional connector includes a spacer plate, on which a rotating shaft is symmetrically rotatably connected. Connecting ears are symmetrically fixed to the ends of the two sets of support pads that are close to each other, and the connecting ears are rotatably connected to the rotating shaft on the same side. A first magnetic block is embedded on the side of the limiting nut away from the support pad, and the magnetic poles of the first magnetic blocks on the two support pads are opposite.

[0009] Furthermore, the telescopic support includes two struts and a hollow square tube. One hollow square tube has multiple transverse insertion tubes fixed to its side, and the other hollow square tube has multiple transverse sleeves corresponding to the transverse insertion tubes fixed to its side. The transverse insertion tubes are inserted into the corresponding transverse sleeves. The strut is inverted T-shaped, with a slot at the top that fits the hollow square tube, and the bottom of the hollow square tube is inserted into the slot. The support rod has a first positioning through hole, and the hollow square tube has multiple first alignment through holes that are adapted to the first positioning through hole. One of the first alignment through holes is coaxially connected to the hollow square tube and is inserted with the same first pin.

[0010] Furthermore, the two transverse sleeves located at the upper and lower edges are provided with second positioning through holes, and the corresponding transverse inserts are provided with multiple second alignment through holes that are compatible with the second positioning through holes. One of the second alignment through holes is connected to the second positioning through hole and is inserted with the same third pin.

[0011] Furthermore, the bottom of the strut is symmetrically provided with mounting grooves on both sides, and an extended support leg is rotatably connected in the mounting groove. The bottom of the extended support leg is flush with the bottom of the strut. The mounting groove is provided with a locking through hole, and the extended support leg is provided with a third alignment through hole that matches the locking through hole. The locking through hole and the third alignment through hole are connected and are inserted with the same second pin. The bottom of the extended support leg is provided with a clearance groove. After the extended support leg is folded, the second pin is connected to the clearance groove.

[0012] Furthermore, the insertion structure includes multiple sleeves, at least two transverse sleeves and corresponding transverse insertion tubes are fitted with sleeves, and the sleeves on the transverse sleeves are in sliding contact with the transverse sleeves, and the inner wall of the sleeves on the transverse insertion tubes is fixed with a spacer ring adapted to the transverse insertion tubes, and the sleeves are slidably fitted on the transverse insertion tubes through the spacer rings. A connector is fixedly connected to one side of the sleeve, and a second magnetic block is fixedly connected to the free end of the connector; At each of the four corners of one side of the support plate, there is a magnetic block sleeve that is compatible with the connector. A third magnetic block with the opposite magnetic pole to the second magnetic block is embedded in the magnetic block sleeve.

[0013] Furthermore, the mounting structure also includes a clamping bolt threaded to one side of the sleeve, with the free end of the clamping bolt corresponding to the transverse sleeve penetrating the sleeve and the end abutting against the transverse sleeve. The free end of the clamping bolt corresponding to the transverse insertion tube passes through the spacer ring and the sleeve, and the end abuts against the transverse insertion tube.

[0014] Furthermore, the magnetic soft cloth is printed with financial area division markings.

[0015] (III) Beneficial Effects Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this utility model, when installing the magnetic soft cloth, first remove the limiting nut from the positioning rod, then place the magnetic soft cloth in the inner groove, and fit the first positioning hole onto the corresponding positioning rod. Then re-thread the limiting nut onto the positioning rod. The positioning rod can limit the magnetic soft cloth, and the limiting nut can fix the magnetic soft cloth in the inner groove for easy use by the user, preventing the magnetic soft cloth from falling off the inner groove during use.

[0016] Second, in this utility model, after the magnetic soft cloth is installed, the user can also place the transparent baffle in the inner groove and fit the second positioning hole onto the corresponding positioning rod, and then re-thread the limiting nut onto the positioning rod. The transparent baffle can protect the magnetic soft cloth and prevent it from being damaged by markers or sharp objects during use. At the same time, the transparent baffle can squeeze the magnetic soft cloth to make it flatter.

[0017] Third, in this utility model, the support pad is hung on the telescopic bracket through a hanging and plugging structure, thereby expanding the teacher's writing area on the blackboard. During installation, the support pad is inserted into the plug-in through the magnetic block sleeve, and the sleeve and plug-in are fixed by the magnetic attraction of the second and third magnetic blocks, thereby hanging the support pad on the telescopic bracket; and during disassembly, only the second and third magnetic blocks need to be separated. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the entire utility model; Figure 2 This is an exploded view of the support pad, magnetic soft cloth, transparent baffle and limiting nut in this utility model; Figure 3 This is one of the schematic diagrams of two support pads being hung on a telescopic bracket in this utility model; Figure 4 for Figure 3 A magnified view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the two support pads after folding in this utility model; Figure 6 This is a schematic diagram of the transverse insertion tube and transverse sleeve in this utility model; Figure 7 for Figure 6 A magnified view of a portion of point B in the middle; Figure 8 This is an exploded view of the support rod, extended support leg, and second pin in this utility model. Figure 9 This is a schematic diagram showing the connection between the transverse sleeve and the hanging structure in this utility model; Figure 10 This is an exploded view of the magnetic block insert, the second magnetic block, and the third magnetic block in this utility model; Figure 11 This is a schematic diagram showing the financial area division markings printed on one of the magnetic soft cloths in this utility model. Figure 12 This is a schematic diagram of printing another financial area division mark on another magnetic soft cloth in this utility model. Figure 13 This is the second schematic diagram of the present invention showing two support pads being hung on a telescopic bracket; Figure 14 This is the third schematic diagram of the present invention, showing two support pads hanging on a telescopic bracket.

[0019] In the diagram: 1. Support pad; 101. Inner groove; 11. Positioning rod; 2. Magnetic soft cloth; 201. First positioning hole; 3. Limiting nut; 31. First magnet; 4. Transparent baffle; 401. Second positioning hole; 5. Spacing plate; 51. Connecting ear; 52. Rotating shaft; 6. Support rod; 601. Slot; 602. First positioning through hole; 603. Mounting groove; 604. Locking through hole; 61. Hollow square tube; 6101. First pair 62. Second alignment through hole; 63. Second alignment through hole; 64. Second alignment sleeve; 65. Extended support leg; 66. Second alignment through hole; 67. Third clearance groove; 78. Second pin; 79. Sleeve; 70. Spacing ring; 71. Connector; 72. Second magnet; 72. Third magnet; 73. Clamping bolt; 8. Magnetic block sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1 like Figures 1-14 As shown, a financial statement teaching simulation sandbox includes a support pad 1 and a magnetic soft cloth 2. The support pad 1 has multiple positioning rods 11, and the magnetic soft cloth 2 has multiple first positioning holes 201 corresponding to the positioning rods 11. The magnetic soft cloth 2 is placed on the support pad 1 through the first positioning holes 201. Specifically, an inner groove 101 is formed on one side of the support pad 1, and positioning rods 11 are fixed to the four corners of the inner wall of the inner groove 101. The magnetic soft cloth 2 is adapted to the inner groove 101, and the magnetic soft cloth 2... The cloth 2 is placed in the inner groove 101, and the first positioning hole 201 on the magnetic soft cloth 2 is sleeved on the corresponding positioning rod 11; the positioning rod 11 can limit the magnetic soft cloth 2, and the free end of the positioning rod 11 is threadedly connected to the limiting nut 3, and the magnetic soft cloth 2 is in contact with the limiting nut 3; the limiting nut 3 can fix the magnetic soft cloth 2 in the inner groove 101 so that it can be used by the user and prevent the magnetic soft cloth 2 from falling out of the inner groove 101 during use.

[0022] Furthermore, such as Figures 11-12 As shown, the magnetic soft cloth 2 is printed with financial area division markings. By printing different styles of financial area division markings on the magnetic soft cloth 2, relevant financial information can be explained to students.

[0023] Specifically, when installing the magnetic soft cloth 2, first remove the limiting nut 3 from the positioning rod 11, then place the magnetic soft cloth 2 in the inner groove 101, and fit the first positioning hole 201 onto the corresponding positioning rod 11, and then re-thread the limiting nut 3 onto the positioning rod 11.

[0024] During the explanation, users can use magnetic prop cards, including but not limited to number prop cards. During the explanation, users can attach the prop cards to the magnetic soft cloth 2 printed with financial area division marks, so as to intuitively display the cash flow and related data distribution under different financial categories. This allows students to quickly compare various financial data, deepen their understanding of financial knowledge, concepts and financial processing procedures, and better understand the logical relationship between data within and between financial statements.

[0025] It also includes telescopic supports, such as Figures 6-8 As shown, the telescopic support includes two struts 6 and a hollow square tube 61. One hollow square tube 61 has multiple transverse insertion tubes 62 fixed to its side, and the other hollow square tube 61 has multiple transverse sleeves 63 corresponding to the transverse insertion tubes 62 fixed to its side. The transverse insertion tubes 62 are inserted into the corresponding transverse sleeves 63. The strut 6 is inverted T-shaped, and the top of the strut 6 is provided with a slot 601 that is compatible with the hollow square tube 61. The bottom of the hollow square tube 61 is inserted into the slot 601. The support rod 6 has a first positioning through hole 602, and the hollow square tube 61 has multiple first alignment through holes 6101 that are adapted to the first positioning through hole 602. One of the first alignment through holes 6101 is coaxially connected to the hollow square tube 61 and is fitted with the same first pin 64. When longitudinally retracting, the first pin 64 is pulled out, and then the hollow square tube 61 is moved up and down for adjustment, aligning the corresponding first alignment through hole 6101 with the first positioning through hole 602. Then the first pin 64 is reinserted, thereby positioning the adjusted hollow square tube 61 and the support rod 6.

[0026] Furthermore, each of the two transverse sleeves 63 located at the upper and lower edges is provided with a second positioning through hole 6301. The corresponding transverse insertion tube 62 is provided with multiple second alignment through holes 6201 that are adapted to the second positioning through holes 6301. One of the second alignment through holes 6201 is connected to the second positioning through hole 6301 and is inserted with the same third pin 67. When performing transverse retraction, the third pin 67 is pulled out, and then the transverse insertion tube 62 is moved left and right for adjustment, and the corresponding second alignment through hole 6201 is aligned with the second positioning through hole 6301. Then the third pin 67 is reinserted, thereby fixing the adjusted transverse insertion tube 62 and transverse sleeve 63.

[0027] Furthermore, such as Figure 8 As shown, mounting grooves 603 are symmetrically arranged on both sides of the bottom of the support rod 6. An extended support leg 65 is rotatably connected in the mounting groove 603. The extended support leg 65 increases the contact area between the support rod 6 and the ground, improving the stability of the support rod 6. The bottom of the extended support leg 65 is flush with the bottom of the support rod 6 to prevent the support rod 6 from swaying back and forth. The mounting groove 603 is provided with a locking through hole 604. The extended support leg 65 is provided with a third alignment through hole 6501 that matches the locking through hole 604. The locking through hole 604 and the third alignment through hole 6501 are connected and are inserted with the same second pin 66. The second pin 66 can lock the extended support leg 65 to the mounting groove 603 to prevent the extended support leg 65 from automatically folding. The bottom of the extended support leg 65 is provided with a clearance groove 6502.

[0028] When folding the extended leg 65, first pull out the second pin 66, then rotate and fold the extended leg 65 along the direction close to the support rod 6. After the extended leg 65 is folded, insert the second pin 66 back in. At this time, the second pin 66 is connected to the clearance groove 6502. Under the action of the second pin 66, the extended leg 65 can be limited to prevent the extended leg 65 from accidentally unfolding during transportation, causing inconvenience or injury to the handling personnel.

[0029] Specifically, when storing or transporting, the telescopic support is retracted to reduce the overall volume, making it easier to transport and saving storage space.

[0030] Compared to placing the magnetic cloth 2 on the blackboard, the support pad 1 is hung on a telescopic bracket via a hook-and-loop structure, thereby expanding the teacher's writing area on the blackboard. Figure 9 , Figure 10 , Figure 13 and Figure 14 As shown, the insertion structure includes multiple sleeves 7, wherein at least two transverse sleeves 63 and corresponding transverse insertion tubes 62 are fitted with sleeves 7, and the sleeves 7 on the transverse sleeves 63 are in sliding contact with the transverse sleeves 63. The inner wall of the sleeves 7 on the transverse insertion tubes 62 is fixedly connected with a spacer ring 71 adapted to the transverse insertion tubes 62, and the sleeves 7 are slidably fitted onto the transverse insertion tubes 62 through the spacer ring 71. Since the diameter of the transverse insertion tubes 62 is smaller than that of the transverse sleeves 63, when the sleeves 7 are directly fitted onto the transverse insertion tubes 62, a gap will be generated between the inner wall of the sleeves 7 and the transverse insertion tubes 62. The spacer ring 71 can fill the gap so that the sleeves 7 can slide stably on the transverse insertion tubes 62. A plug 72 is fixedly connected to one side of the sleeve 7, and a second magnetic block 721 is fixedly connected to the free end of the plug 72; A magnetic block sleeve 8, which is compatible with the connector 72, is pasted on one of the four corners of the support plate 1. A third magnetic block 722 with the opposite magnetic pole to the second magnetic block 721 is embedded in the magnetic block sleeve 8.

[0031] During installation, the support pad 1 is inserted into the connector 72 through the magnetic block sleeve 8. The sleeve 7 and the connector 72 are fixed by the magnetic attraction of the second magnetic block 721 and the third magnetic block 722, so that the support pad 1 can be hung on the telescopic bracket. Disassembly can be performed simply by separating the second magnetic block 721 and the third magnetic block 722.

[0032] Furthermore, the mounting structure also includes a clamping bolt 73 threaded to one side of the sleeve 7, the free end of the clamping bolt 73 corresponding to the transverse sleeve 63 passes through the sleeve 7 and the end abuts against the transverse sleeve 63; The free end of the clamping bolt 73 corresponding to the transverse insertion tube 62 passes through the spacer ring 71 and the sleeve 7, and the end abuts against the transverse insertion tube 62.

[0033] After adjusting the sleeve 7 according to the position of the magnetic block insert 8, tighten the clamping bolt 73 so that its end is pressed against the corresponding transverse sleeve 63 or transverse insert 62, thereby increasing the friction between the clamping bolt 73 and the transverse sleeve 63 or transverse insert 62, and preventing the sleeve 7 from moving left and right during use.

[0034] Example 2 like Figures 1-14 As shown, this embodiment improves upon Embodiment 1 as follows: Furthermore, when the financial area division marker cannot be printed on a single magnetic soft cloth 2, such as... Figures 3-5 As shown, there are two sets of support pads 1, so that the financial area division marks are printed on two magnetic soft cloths 2 respectively. The two sets of support pads 1 are connected by a two-way connector. The two-way connector includes a spacer plate 5. A rotating shaft 52 is symmetrically rotatably connected to the spacer plate 5. A connecting ear 51 is symmetrically fixed to one end of the two sets of support pads 1 that is close to each other. The connecting ear 51 is rotatably connected to the rotating shaft 52 on the same side.

[0035] The limiting nut 3 is embedded with a first magnetic block 31 on the side away from the support pad 1, and the magnetic poles of the first magnetic blocks 31 on the two support pads 1 are opposite.

[0036] Specifically, to facilitate carrying, the two support pads 1 are bent inward at 90° when carried. After folding, the limiting nuts 3 on the two support pads 1 will be magnetically attracted by the first magnetic block 31, preventing the two support pads 1 from suddenly separating during carrying and causing the support pads 1 to collide with the ground and be damaged.

[0037] Among them, such as Figure 13As shown, when there are two support pads 1, the user can insert two of the connectors 72 into the corresponding magnetic block sleeves 8 on one of the support pads 1, and insert the other two connectors 72 into the corresponding magnetic block sleeves 8 on the other support pad 1, thereby fixing the two support pads 1. like Figure 14 As shown, users can also add a hanging structure to the horizontal insertion tube 62 and the horizontal sleeve 63 to fix the two support pads 1.

[0038] Example 3 like Figures 1-14 As shown, this embodiment is an improvement upon embodiment one as follows: Further, as... Figure 2 As shown, a transparent baffle 4 is provided on the side of the magnetic soft cloth 2 away from the support pad 1. The transparent baffle 4 has a plurality of second positioning holes 401 corresponding to the positioning rods 11. The transparent baffle 4 is inserted into the inner groove 101, and the second positioning holes 401 on the transparent baffle 4 are sleeved on the corresponding positioning rods 11. One side of the magnetic soft cloth 2 is in contact with the inner wall of the inner groove 101, and the other side is in contact with the transparent baffle 4. The free end of the positioning rod 11 extends into a second positioning hole 401. The limiting nut 3 is threadedly connected to the free end of the positioning rod 11, and the limiting nut 3 is in contact with the transparent baffle 4. The transparent baffle 4 protects the magnetic soft cloth 2 from damage by markers or sharp objects during use. At the same time, the transparent baffle 4 can compress the magnetic soft cloth 2 to make it flatter. The transparent baffle 4 can be made of, but is not limited to, a transparent acrylic sheet. The free end of the positioning rod 11 extends into a second positioning hole 401. The limiting nut 3 is threadedly connected to the free end of the positioning rod 11, and the limiting nut 3 is in contact with the transparent baffle 4.

[0039] After installing the magnetic soft cloth 2, place the transparent baffle 4 in the inner groove 101 and fit the second positioning hole 401 onto the corresponding positioning rod 11. Then, re-thread the limiting nut 3 onto the positioning rod 11. At this time, the limiting nut 3 will fix the transparent baffle 4.

[0040] In summary, the workflow of this utility model is as follows: When installing the magnetic soft cloth 2: first remove the limiting nut 3 from the positioning rod 11, then place the magnetic soft cloth 2 in the inner groove 101, and fit the first positioning hole 201 onto the corresponding positioning rod 11, and then re-thread the limiting nut 3 onto the positioning rod 11.

[0041] When installing the support pad 1 with the magnetic soft cloth 2 on the telescopic bracket: first, adjust the sleeve 7 according to the position of the magnetic block sleeve 8, then tighten the clamping bolt 73 so that its end is pressed against the corresponding transverse sleeve 63 or transverse insert 62, thereby increasing the friction between the clamping bolt 73 and the transverse sleeve 63 or transverse insert 62; then, the support pad 1 is inserted into the connector 72 through the magnetic block sleeve 8, and the sleeve 7 and connector 72 are fixed by the magnetic attraction of the second magnetic block 721 and the third magnetic block 722.

[0042] During the explanation, users can use magnetic prop cards, including but not limited to number prop cards. During the explanation, users can attach the prop cards to the magnetic soft cloth 2 printed with financial area division marks, so as to intuitively display the cash flow and related data distribution under different financial categories. This allows students to quickly compare various financial data, deepen their understanding of financial knowledge, concepts and financial processing procedures, and better understand the logical relationship between data within and between financial statements.

[0043] Users can also place a telescopic bracket in multiple classrooms. When they need to give a lecture to other classrooms, they only need to remove the support pad 1 with the magnetic soft cloth 2 from the previous telescopic bracket, without having to carry the telescopic bracket again.

[0044] However, as is well known to those skilled in the art, the working principles and wiring methods of the magnetic soft cloth 2, the first magnetic block 31, the second magnetic block 721, and the third magnetic block 722 are commonplace and belong to conventional methods or common knowledge. Therefore, they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0045] The different embodiments described above can be combined, substituted, or used in combination with each other.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A financial statement teaching simulation sandbox, characterized in that: Includes a support pad (1) and a magnetic soft cloth (2). The support pad (1) is provided with multiple positioning rods (11). The magnetic soft cloth (2) is provided with multiple first positioning holes (201) corresponding to the positioning rods (11). The magnetic soft cloth (2) is placed on the support pad (1) through the first positioning holes (201). The free end of the positioning rod (11) is threadedly connected to a limit nut (3). The magnetic soft cloth (2) is in contact with the limit nut (3). It also includes telescopic brackets, and the support pad (1) is hung on the telescopic brackets through a hook-and-plug structure.

2. The financial statement teaching simulation sandbox according to claim 1, characterized in that: The support pad (1) has an inner groove (101) on one side. Positioning rods (11) are fixed at the four corners of the inner wall of the inner groove (101). The magnetic soft cloth (2) is adapted to the inner groove (101). The magnetic soft cloth (2) is placed in the inner groove (101) and the first positioning hole (201) on the magnetic soft cloth (2) is sleeved on the corresponding positioning rod (11).

3. The financial statement teaching simulation sandbox according to claim 2, characterized in that: A transparent baffle (4) is provided on the side of the magnetic soft cloth (2) away from the support pad (1). The transparent baffle (4) has multiple second positioning holes (401) corresponding to the positioning rods (11). The transparent baffle (4) is inserted into the inner groove (101), and the second positioning holes (401) on the transparent baffle (4) are sleeved on the corresponding positioning rods (11). One side of the magnetic soft cloth (2) is in contact with the inner wall of the inner groove (101), and the other side is in contact with the transparent baffle (4). The free end of the positioning rod (11) extends into a second positioning hole (401), the limiting nut (3) is threadedly connected to the free end of the positioning rod (11), and the limiting nut (3) is in contact with the transparent baffle (4).

4. The financial statement teaching simulation sandbox according to claim 2 or 3, characterized in that: The support pad (1) is provided in two sets. The two sets of support pads (1) are connected by a bidirectional connector. The bidirectional connector includes a distance plate (5). A rotating shaft (52) is symmetrically rotatably connected to the distance plate (5). A connecting ear (51) is symmetrically fixed to one end of the two sets of support pads (1) that are close to each other. The connecting ear (51) is rotatably connected to the rotating shaft (52) on the same side. The limiting nut (3) has a first magnetic block (31) embedded on the side away from the support pad (1), and the first magnetic blocks (31) on the two support pads (1) have opposite magnetic poles.

5. The financial statement teaching simulation sandbox according to claim 1, characterized in that: The telescopic support includes two struts (6) and a hollow square tube (61). One hollow square tube (61) has multiple transverse insertion tubes (62) fixed to its side, and the other hollow square tube (61) has multiple transverse sleeves (63) corresponding to the transverse insertion tubes (62) fixed to its side. The transverse insertion tubes (62) are inserted into the corresponding transverse sleeves (63). The strut (6) is inverted T-shaped, and the top of the strut (6) is provided with a slot (601) that is compatible with the hollow square tube (61). The bottom of the hollow square tube (61) is inserted into the slot (601). The support rod (6) has a first positioning through hole (602), and the hollow square tube (61) has multiple first alignment through holes (6101) that are compatible with the first positioning through hole (602). One of the first alignment through holes (6101) is coaxially connected to the hollow square tube (61) and is inserted with the same first pin (64).

6. The financial statement teaching simulation sandbox according to claim 5, characterized in that: The two transverse sleeves (63) located at the upper and lower edges are provided with a second positioning through hole (6301), and the corresponding transverse insert (62) is provided with a plurality of second alignment through holes (6201) that are adapted to the second positioning through hole (6301). One of the second alignment through holes (6201) is connected to the second positioning through hole (6301) and is inserted with the same third pin (67).

7. The financial statement teaching simulation sandbox according to claim 5, characterized in that: The bottom of the support rod (6) is symmetrically provided with mounting grooves (603) on both sides. An extended support leg (65) is rotatably connected in the mounting groove (603). The bottom of the extended support leg (65) is flush with the bottom of the support rod (6). The mounting groove (603) is provided with a locking through hole (604). The extended support leg (65) is provided with a third alignment through hole (6501) that matches the locking through hole (604). The locking through hole (604) and the third alignment through hole (6501) are connected and are inserted with the same second pin (66). The bottom of the extended support leg (65) is provided with a clearance groove (6502). After the extended support leg (65) is folded, the second pin (66) is connected to the clearance groove (6502).

8. The financial statement teaching simulation sandbox according to claim 5, characterized in that: The hanging structure includes multiple sleeves (7), at least two transverse sleeves (63) and corresponding transverse insertion tubes (62) are fitted with sleeves (7), and the sleeves (7) on the transverse sleeves (63) are in sliding contact with the transverse sleeves (63), the inner wall of the sleeves (7) on the transverse insertion tubes (62) is fixed with a spacer ring (71) that is adapted to the transverse insertion tubes (62), and the sleeves (7) are slidably fitted on the transverse insertion tubes (62) through the spacer ring (71); A plug (72) is fixedly connected to one side of the sleeve (7), and a second magnetic block (721) is fixedly connected to the free end of the plug (72). A magnetic block sleeve (8) that is compatible with the connector (72) is pasted at each of the four corners of one side of the support plate (1). A third magnetic block (722) with the opposite magnetic pole to the second magnetic block (721) is embedded in the magnetic block sleeve (8).

9. The financial statement teaching simulation sandbox according to claim 8, characterized in that: The hanging structure also includes a clamping bolt (73) threaded to one side of the sleeve (7), the free end of the clamping bolt (73) corresponding to the transverse sleeve (63) passes through the sleeve (7) and the end abuts against the transverse sleeve (63); The free end of the clamping bolt (73) corresponding to the transverse insertion tube (62) passes through the spacer ring (71) and the sleeve (7), and the end abuts against the transverse insertion tube (62).

10. The financial statement teaching simulation sandbox according to claim 1, characterized in that: The magnetic soft cloth (2) is printed with financial area division markings.

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