Experiment teaching aid for simulating geological action of wind

Abstract

The invention relates to an experiment teaching aid for simulating the geological action of wind, and belongs to the field of teaching aids. The experiment teaching aid comprises an experiment box, a remote control device and a box cover arranged at the top of the experiment box, an installation support is arranged on the side wall of the experiment box in a penetrating mode, a driving device is arranged on the side, located in the experiment box, of the installation support, and the output end of the driving device is connected with fan blades. A control device electrically connected with the driving device is arranged on the side, located outside the experiment box, of the mounting support, and stones and sand grains are arranged in the experiment box. The device is simple in structure and convenient to operate, simulates the natural environment through the experiment box and the fan motor capable of adjusting the wind speed, enables students to observe the geological action of wind personally on the basis of teaching material theoretical knowledge, and effectively enhances the teaching effect through the combination of theory and practice.

Description

Technical Field

[0001] The invention belongs to the field of teaching tools, and in particular relates to an experimental teaching tool for simulating the geological effect of wind. Background Art

[0002] The geological action of wind refers to the process of erosion, transportation and accumulation of surface materials caused by the surface friction between wind and land surface, which forms peculiar landforms such as Gobi, wind erosion columns and honeycomb stones under long-term action. Students can learn and understand the above content in existing textbooks.

[0003] However, the textbooks only allow students to form superficial cognition through pictures and texts, and they cannot get intuitive feelings and understanding. In order to enable students to truly observe the geological effects of wind with their own eyes, intuitively feel and understand the content of the textbooks, it is necessary to develop an experimental teaching aid that can simulate the geological effects of wind. Summary of the invention

[0004] The purpose of the invention is to provide an experimental teaching aid which can adjust the wind speed to control the experimental speed and can simulate the geological effect of wind, so as to facilitate students' observation and learning.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: An experimental teaching aid for simulating the geological effect of wind, comprising an experimental box, a remote control device and a box cover arranged on the top of the experimental box, a mounting bracket is provided on the side wall of the experimental box, a driving device is provided on one side of the mounting bracket located inside the experimental box, a fan blade is connected to the output end of the driving device, a control device electrically connected to the driving device is provided on one side of the mounting bracket located outside the experimental box, and stones and sand are provided in the experimental box; The control device comprises a power supply, an electronic speed regulator and a signal receiver, and the remote control device is electrically connected to the signal receiver.

[0006] Furthermore, a light-absorbing curtain is provided at the bottom of the experimental box.

[0007] Furthermore, a sealing strip is provided on the edge of the box cover.

[0008] The beneficial effects of the present invention are: It has a simple structure and is easy to operate. It simulates the natural environment through the experimental box and the fan motor with adjustable wind speed, allowing students to observe the geological effects of wind with their own eyes based on the theoretical knowledge in the textbooks. The combination of theory and practice effectively enhances the teaching effect.

[0009] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an experimental teaching aid for simulating the geological effect of wind shown in one embodiment of the present invention; Figure 2 This is a comparison diagram before and after the experiment of the wind transport effect of Example 2 of the present invention; Figure 3 This is a comparison diagram before and after the experiment of the accumulation effect of wind in Example 2 of the present invention; Figure 4 This is a comparison diagram before and after the experiment of wind erosion in Example 2 of the present invention.

[0011] Explanation of the accompanying drawings: 1. Box cover; 2. Experimental box; 3. Fan blades; 4. Driving device; 5. Control device; 6. Light-absorbing curtain; 7. Remote control device. DETAILED DESCRIPTION

[0012] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0014] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example 1

[0016] See also Figure 1An experimental teaching aid for simulating the geological effect of wind shown in a preferred embodiment of the present application includes an experimental box, a remote control device and a box cover arranged on the top of the experimental box. A mounting bracket is passed through the side wall of the experimental box. A driving device is arranged on one side of the mounting bracket located inside the experimental box. The output end of the driving device is connected to a fan blade. A control device electrically connected to the driving device is arranged on one side of the mounting bracket located outside the experimental box.

[0017] In this embodiment, the driving device is a motor.

[0018] Specifically, the control device includes a power supply, an electronic speed regulator and a signal receiver, and the remote control device is electrically connected to the signal receiver.

[0019] Preferably, a light-absorbing curtain is also provided at the bottom of the experimental box to prevent reflection from affecting students' observation.

[0020] Preferably, a sealing strip is provided on the edge of the box cover to improve the sealing of the experimental box.

[0021] Working principle: Put stones, sand and other materials into the experimental box and close the lid. The teacher or student remotely operates the remote control device to control the opening and closing of the motor and adjust the wind speed, thereby controlling the speed of the experiment. By controlling the sand and wind speed in the experimental box, the geological effect of wind in nature is simulated, and the erosion, transportation and accumulation process of wind is demonstrated, so that students can witness natural phenomena that were originally difficult to observe and better understand the principles based on textbooks. Example 2

[0022] On the basis of Example 1, this example simulates various geological effects of wind by changing the wind speed and the volume and state of sand and gravel placed in the experimental box.

[0023] 1. The transport function of wind: See also Figure 2 , place about 50ml of a mixture of sand and stones at the position corresponding to the fan blades in the experimental box, then close the box lid to ensure safety, and control the drive device through the remote control device to work in mid-range mode for about 1 minute, with a wind speed of about 6.8m / s. It can be observed that the lighter sand in the mixture is gradually transported to a distance by the wind, while the heavier stones are slowly exposed. Finally, the sand and stones are sorted by the wind, simulating the formation process of the Gobi landform in nature.

[0024] 2. The accumulation effect of wind: See also Figure 3, Place about 1000ml of sand at the position corresponding to the fan blade in the experimental box, then close the box lid to ensure safety, and control the drive device through the remote control device to work in the medium-speed state for about 1 minute, with a wind speed of about 16m / s. It can be observed that the sand is gradually transported to a distance, and finally sand dunes are formed on the box wall and at positions with lower wind speeds, simulating the formation process of desert landforms in nature.

[0025] 3. Erosion by wind: See also Figure 4 , use wet sand to make sand columns to simulate rocks, and in order to facilitate comparison before and after the experiment, several marks are engraved on the sand columns.

[0026] After placing the sand column in the experimental box, pour in 1000ml of sand, then close the box lid to ensure safety. Use the remote control to control the drive device to work in high-end state for about 30 seconds, with a wind speed of about 20m / s. It can be observed that the sand is blown up by the wind and continuously polishes the sand column. Finally, the edges and marks of the sand column are polished smooth, simulating the formation process of wind erosion column landforms in nature.

[0027] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An experimental teaching aid for simulating the geological effect of wind, characterized in that: It comprises an experimental box, a remote control device and a box cover arranged on the top of the experimental box, a mounting bracket is provided on the side wall of the experimental box, a driving device is provided on one side of the mounting bracket located inside the experimental box, a fan blade is connected to the output end of the driving device, a control device electrically connected to the driving device is provided on one side of the mounting bracket located outside the experimental box, and stones and sand are provided in the experimental box; The control device comprises a power supply, an electronic speed regulator and a signal receiver, and the remote control device is electrically connected to the signal receiver.

2. The experimental teaching aid for simulating the geological effect of wind as claimed in claim 1, characterized in that: A light-absorbing curtain is arranged at the bottom of the experimental box.

3. The experimental teaching aid for simulating the geological effect of wind as claimed in claim 1, characterized in that: The edge of the box cover is provided with a sealing strip.

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