Mathematical probability statistics demonstration device

Abstract

The utility model discloses a mathematical probability statistics demonstration device, and relates to the technical field of teaching aids. The device comprises a bottom plate, a placement groove is formed in one face of the bottom plate, a plurality of placement rods are placed in the placement groove, supporting plates are connected between the placement rods and the bottom plate, and one ends of the multiple sets of supporting plates are connected to the bottom plate through screws. The surface of the bottom plate is provided with the placing groove and the placing rod which can be placed in the placing groove, so that the placing rod can be freely detached, and the placing rod and the bottom plate are fixed through the screw, so that after demonstration is completed, the screw is unscrewed to complete detachment. The problems that an existing demonstration device is often inconvenient to disassemble after demonstration is completed, great trouble is brought to later transportation, and inconvenience is brought to workers are solved, a storage groove is formed in the side wall of the bottom plate, the demonstration column can be placed in the storage groove after use is completed, and the effect of saving space is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a mathematical probability statistics demonstration device. Background Art

[0002] Probability theory and mathematical statistics is a distinctive and very active branch of mathematics. On the one hand, it has unique research topics, its own unique concepts and methods, rich content and profound results; on the other hand, it is closely related to other disciplines and is an important part of modern mathematics. Due to its rapid development and wide application in recent years, it has now developed into an independent first-level discipline. The theories and methods of probability theory and mathematical statistics have been widely used in industry, agriculture, military and science and technology, such as prediction and filtering in space technology and automatic control, time series analysis in oil exploration and economic management, Markov process and point process statistical analysis in earthquake prediction, etc. At the same time, it has penetrated into basic disciplines and engineering disciplines, and combined with other disciplines to develop into a marginal discipline. This is a new trend in the development of probability theory and mathematical statistics. The existing demonstration devices are often not easy to disassemble after the demonstration, which brings great trouble to the later transportation and inconvenience to the staff. Utility Model Content

[0003] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0004] A mathematical probability and statistics demonstration device includes a base plate, characterized in that a placement groove is opened on one side of the base plate, a plurality of placement rods are placed in the placement groove, support plates are connected between the plurality of placement rods and the base plate, and one end of multiple groups of support plates are connected to the base plate with screws, and the other end is connected to one side of the placement rod with screws.

[0005] Furthermore, a sliding groove is provided in the placement rod, and a plurality of demonstration rods are constructed in the sliding groove. The demonstration rods can be slidably connected or fixed in the sliding groove.

[0006] Furthermore, a card slot is provided in the sliding slot, the card slot is T-shaped, a card block is constructed in the card slot, the card block is fixedly installed on both sides of the demonstration rod, and the demonstration rod can be fixed or slid in the card slot by relying on the card block.

[0007] Furthermore, a plurality of digital identifications are engraved on the surface of the placement rod, and the digital identifications are arranged in sequence on the placement rod, and the digital identifications correspond to the engravings on the demonstration rod.

[0008] Furthermore, a storage groove is provided on one side of the bottom plate, and a baffle is rotatably installed in the storage groove.

[0009] Furthermore, universal wheels are constructed at the bottom of the base plate, and the universal wheels are evenly distributed at the four corners of the bottom of the base plate. The universal wheels can move freely or be fixed.

[0010] Furthermore, a plurality of demonstration columns are placed on the top of the bottom plate, the demonstration columns are of different lengths, and the demonstration columns are placed in front of the demonstration rod.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model provides a placement groove on the surface of the bottom plate, and a placement rod that can be placed in the placement groove, so that the placement rod can be freely disassembled, and the placement rod and the bottom plate are fixed with screws, so that after the demonstration is completed, the screws can be unscrewed to complete the disassembly, which solves the problem that the existing demonstration device is often difficult to disassemble after the demonstration is completed, which brings great troubles to the subsequent transportation and inconvenience to the staff.

[0013] 2. The utility model also provides a storage groove on the side wall of the bottom plate, so that the demonstration column can be placed in the storage groove after use, which saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of the utility model from another viewing angle;

[0016] Figure 3 It is a detailed diagram of the demonstration rod of the utility model;

[0017] Figure 4 It is a detailed diagram of the placement rod of the utility model;

[0018] Figure numerals: 1. bottom plate; 2. placement slot; 3. placement rod; 4. support plate; 5. sliding slot; 6. demonstration rod; 7. card slot; 8. card block; 9. digital label; 10. storage slot; 11. baffle; 12. universal wheel; 13. demonstration column. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0020] The present application provides a mathematical probability statistics demonstration device, which is mainly used to solve the problem that the existing demonstration device is often difficult to disassemble after the demonstration, which brings great trouble to the subsequent transportation and inconvenience to the staff, and provides the following technical solutions. Figure 1-Figure 4 Make a detailed description:

[0021] A mathematical probability statistics demonstration device comprises a bottom plate 1, a placement groove 2 is provided on one side of the bottom plate 1, a plurality of placement rods 3 are placed in the placement groove 2, a support plate 4 is connected between the plurality of placement rods 3 and the bottom plate 1, one end of a plurality of support plates 4 is connected to the bottom plate 1 by screws, and the other end is connected to one side of the placement rod 3 by screws, a sliding groove 5 is provided in the placement rod 3, a plurality of demonstration rods 6 are constructed in the sliding groove 5, the demonstration rod 6 can be slidably connected or fixed in the sliding groove 5, a card slot 7 is also provided in the sliding groove 5, the card slot 7 is T-shaped, and a card block 8 is constructed in the card slot 7, The card blocks 8 are fixedly installed on both sides of the demonstration rod 6. The demonstration rod 6 can be fixed or slid in the card slot 7 by relying on the card blocks 8. A plurality of digital marks 9 are engraved on the surface of the placement rod 3. The digital marks 9 are arranged in sequence on the placement rod 3. The digital marks 9 correspond to the engravings on the demonstration rod 6. A storage groove 10 is also opened on one side of the bottom plate 1. A baffle plate 11 is rotatably installed in the storage groove 10. A universal wheel 12 is constructed at the bottom of the bottom plate 1. The universal wheel 12 is evenly distributed at the four corners of the bottom of the bottom plate 1. The universal wheel 12 can be freely moved or fixed. A plurality of demonstration columns 13 are placed on the top of the bottom plate 1. The demonstration columns 13 The lengths of the demonstration columns 13 are different. The demonstration columns 13 are placed in front of the demonstration rods 6. In some embodiments, before use, the support plates 4 are installed on both sides of the bottom plate 1 with screws. After the placement rods 3 are placed in the placement slots 2 and the positions are initially fixed, the placement rods 3 and the support plates 4 are fixed with screws. At this time, the demonstration rods 6 are inserted into the sliding slots 5 horizontally, and the corresponding digital logos 9 are placed in the sliding slots 5. By observing the digital logos 9, the demonstration rods 6 are placed in the card blocks 8 to achieve fixation. When disassembling, the demonstration rods 6 are lifted and pulled out of the sliding slots 5 horizontally to complete the disassembly. During the demonstration process, the side with the digital logos 9 is first facing the viewer. When explaining, the demonstration columns 13 of different lengths are placed on the bottom plate 1, which can achieve the effect of column statistics. When it is necessary to move its position during the speech, it can be freely moved or fixed by the universal wheels 12 installed at the bottom of the bottom plate 1, which is convenient for personnel to use. This solves the problem that the existing demonstration devices are often not easy to disassemble after the demonstration is completed, which brings great troubles to the later transportation and inconvenience to the staff.

[0022] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mathematical probability statistics demonstration device, comprising a base plate (1), characterized in that: A placement groove (2) is provided on one side of the base plate (1), a plurality of placement rods (3) are placed in the placement groove (2), a support plate (4) is connected between the plurality of placement rods (3) and the base plate (1), and a plurality of groups of support plates (4) are connected to the base plate (1) at one end by screws, and are connected to one side of the placement rods (3) at the other end by screws.

2. A mathematical probability statistics demonstration device according to claim 1, characterized in that: A sliding groove (5) is provided in the placement rod (3), and a plurality of demonstration rods (6) are constructed in the sliding groove (5). The demonstration rods (6) can be slidably connected or fixed in the sliding groove (5).

3. A mathematical probability statistics demonstration device according to claim 2, characterized in that: The sliding groove (5) is also provided with a card slot (7), the card slot (7) is T-shaped, a card block (8) is constructed in the card slot (7), the card block (8) is fixedly mounted on both sides of the demonstration rod (6), and the demonstration rod (6) can be fixed or slid in the card slot (7) by relying on the card block (8).

4. A mathematical probability statistics demonstration device according to claim 1, characterized in that: A plurality of digital marks (9) are engraved on the surface of the placement rod (3), and the digital marks (9) are arranged in sequence on the placement rod (3), and the digital marks (9) correspond to the engravings on the demonstration rod (6).

5. A mathematical probability statistics demonstration device according to claim 1, characterized in that: A receiving groove (10) is also provided on one side of the bottom plate (1), and a baffle (11) is rotatably installed in the receiving groove (10).

6. A mathematical probability statistics demonstration device according to claim 1, characterized in that: The bottom of the base plate (1) is structured with universal wheels (12), the universal wheels (12) are evenly distributed at the four corners of the bottom of the base plate (1), and the universal wheels (12) can be freely moved or fixed.

7. A mathematical probability statistics demonstration device according to claim 1, characterized in that: A plurality of demonstration columns (13) are placed on the top of the bottom plate (1), the demonstration columns (13) are of different lengths, and the demonstration columns (13) are placed in front of the demonstration rod (6).

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