A hand-operated wind direction and speed demonstration device

Abstract

The utility model provides a kind of hand-operated wind direction and speed demonstration equipment, belong to popular science demonstration technical field, solve the problem that existing technology cannot intuitively popularize the relationship between wind vane and wind direction and demonstrate the change of wind speed under indoor windless environment.It includes base, base is rotationally provided with driven gear ring and the support frame synchronous rotation with driven gear ring, driven gear ring is connected with hand-operated drive component, support frame is provided with fan, base is fixedly provided with stator at the axis of driven gear ring, rotor is rotationally arranged in stator, the wire connected with fan is connected on rotor, base is vertically provided with wind direction and speed display device at the axis of rotor.Hand-operated drive component drives driven gear ring and fan to rotate around wind direction and speed display device, changes wind direction so that the relationship between wind vane and wind direction can be intuitively seen, fan has the process of wind speed promotion from opening to wind speed stabilization, wind speed change can also be intuitively seen on wind direction and speed display device.

Description

Technical Field

[0001] This utility model belongs to the field of popular science demonstration technology, specifically to a hand-cranked wind direction and wind speed demonstration device. Background Technology

[0002] During the popular science demonstration of wind direction and speed, relevant equipment will be used in conjunction with theoretical knowledge to help people better understand the relevant information.

[0003] In existing technologies, instructors use portable three-cup anemometers for explanations. However, portable three-cup anemometers cannot intuitively explain the relationship between wind vanes and wind direction, nor can they demonstrate wind speed changes in a windless indoor environment. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a hand-cranked wind direction and speed demonstration device. A fan generates airflow that blows towards the wind direction and speed display device, causing the device to display the corresponding wind speed and direction. The hand-cranked drive assembly drives the driven gear ring and the fan to rotate around the wind direction and speed display device, changing the wind direction so that the relationship between the wind vane and the wind direction can be clearly seen. The process of the fan increasing from startup to stable wind speed can also be clearly seen on the wind direction and speed display device.

[0005] The technical solution adopted in this utility model is as follows: A hand-cranked wind direction and speed demonstration device includes a base, on which a driven gear ring and a support frame that rotate synchronously with the driven gear ring are rotatably mounted. The driven gear ring is connected to a hand-cranked drive assembly, and a fan is mounted on the support frame. A stator located at the axis of the driven gear ring is fixedly mounted on the base, and a rotor is rotatably mounted inside the stator. A wire connected to the fan is connected to the rotor, and a wind direction and speed display device located at the axis of the rotor is vertically mounted on the base.

[0006] Preferably, the wind turbines are arranged in two sets at intervals, and the wind direction and wind speed display device includes an anemometer. The top of the anemometer is rotatably equipped with a three-cup ball rotating component aligned with one of the wind turbines. The top of the anemometer is fixedly equipped with a mounting bracket, and a wind vane is fixedly connected to the mounting bracket. A wind vane aligned with the other wind turbine is rotatably equipped on the wind vane.

[0007] Preferably, the bottom of the anemometer is fixedly connected to a screw that is threadedly connected to the base.

[0008] Preferably, the hand-cranked drive assembly includes a mounting plate, on which a drive gear and a transmission gear are rotatably mounted. The transmission gear meshes with the drive gear and the driven gear ring, respectively, and a crank handle is fixedly connected to the shaft of the drive gear.

[0009] Preferably, the drive gear and transmission gear are located below the mounting plate, and a protective cover is provided on the outer side of the driven gear ring.

[0010] Preferably, the base is provided with a mounting plate located below the driven gear ring, and the mounting plate is provided with several directional marks along the circumference, and the driven gear ring is provided with a pointing notch for indicating the corresponding directional mark of the support frame.

[0011] Preferably, a fixing ring is fixedly provided on the mounting plate, and a rotating ring is sleeved on the outer side of the fixing ring through a bearing. The driven gear ring and the support frame are both provided on the rotating ring.

[0012] Preferably, the base is provided with a start switch for controlling the opening and closing of the fan and a wind speed adjustment knob for controlling the output power of the fan.

[0013] Preferably, the base is provided with a glass cover, and a wind vane model is placed inside the glass cover.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: The airflow generated by the fan blows towards the wind direction and wind speed display device, thereby displaying the corresponding wind speed and wind direction. The hand-cranked drive assembly drives the driven gear ring and the fan to rotate around the wind direction and wind speed display device, changing the wind direction so that the relationship between the wind vane and the wind direction can be seen intuitively. The process of the fan starting up and the wind speed stabilizing is also visible on the wind direction and wind speed display device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model; Figure 2 A schematic diagram of the driven driven gear ring of the hand-cranked drive assembly provided in an embodiment of this utility model; Figure 3 A schematic diagram of the mounting plate structure provided in an embodiment of this utility model; Figure 4 A schematic diagram of the wind direction and wind speed display device provided in this embodiment of the utility model.

[0017] Reference numerals: 1-Base; 2-Handle; 3-Mounting plate; 4-Glass cover; 5-Start switch; 6-Wind speed adjustment knob; 7-Support frame; 8-Fan; 9-Wire; 10-Wind vane; 11-Wind vane; 12-Three-cup ball rotating component; 13-Anemometer; 14-Rotor; 15-Stator; 16-Drive gear; 17-Transmission gear; 18-Pointing notch; 19-Fixing ring; 20-Driven gear ring; 21-Mounting plate; 22-Rotating ring; 23-Directional indicator; 24-Mounting bracket. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] The following is combined with Figures 1-4 This utility model will be described in detail.

[0022] Example A hand-cranked wind direction and speed demonstration device includes a base 1, a driven gear ring 20 rotatably mounted on the base 1 and a support frame 7 that rotates synchronously with the driven gear ring 20, a hand-cranked drive assembly connected to the driven gear ring 20, a fan 8 mounted on the support frame 7, a stator 15 fixedly mounted on the base 1 at the axis of the driven gear ring 20, a rotor 14 rotatably mounted inside the stator 15, a wire 9 connected to the fan 8 connected to the rotor 14, and a wind direction and speed display device vertically mounted on the base 1 at the axis of the rotor 14.

[0023] The airflow generated by the fan 8 is directed toward the wind direction and wind speed display device, thereby displaying the corresponding wind speed and wind direction. The hand-cranked drive assembly drives the driven gear ring 20 and the fan 8 to rotate around the wind direction and wind speed display device, changing the wind direction so that the relationship between the wind vane and the wind direction can be seen intuitively. The fan 8 has a process of increasing wind speed from starting to stabilizing, and the change in wind speed can also be seen intuitively on the wind direction and wind speed display device.

[0024] The stator 15 and rotor 14 form a conductive slip ring structure to provide power to the rotating fan 8 and prevent the wires 9 from getting tangled. A rigid conduit can be fitted over the outside of the wires 9 to reduce the stress on them.

[0025] Two sets of fans 8 are arranged at intervals above and below. The wind direction and wind speed display device includes an anemometer 13. The top of the anemometer 13 is rotatably equipped with a three-cup ball rotating part 12 aligned with one of the fans 8. The top of the anemometer 13 is fixedly equipped with a mounting bracket 24. A wind vane 11 is fixedly connected to the mounting bracket 24. A wind vane 10 aligned with the other fan 8 is rotatably equipped on the wind vane 11.

[0026] The fan 8 blows airflow onto the three-cup spherical rotating component 12 and the wind vane 10, thereby displaying the wind speed on the anemometer 13 and the corresponding wind direction coordinate on the wind vane 11. Specifically: after the wind vane 10 rotates, it drives the indicator needle in the wind vane 11 to rotate synchronously, and the indicator needle points to the coordinate direction on the wind vane 11, thus displaying the wind direction on the wind vane 11; after the three-cup spherical rotating component 12 rotates, the relevant rotation speed is displayed on the anemometer 13. The wind vane 11 and the anemometer 13 are both prior art, and therefore will not be described in detail in this application.

[0027] The bottom of the anemometer 13 is fixedly connected to a screw rod that is threaded to the base 1. The screw rod allows for easy disassembly and assembly of the entire wind direction and wind speed display device.

[0028] The hand-cranked drive assembly includes a mounting plate 3, on which a drive gear 16 and a transmission gear 17 are rotatably mounted. The transmission gear 17 meshes with the drive gear 16 and the driven gear ring 20, respectively. A crank handle 2 is fixedly connected to the shaft of the drive gear 16.

[0029] The drive gear 16 is larger than the transmission gear 17, and the driven gear ring 20 is larger than the drive gear 16, forming a speed reduction transmission structure. The operator rotates the crank 2, causing the driven gear ring 20 and the fan 8 to rotate around the wind direction and speed display device. The hand-cranked method also increases the interactivity and fun of the science museum.

[0030] The drive gear 16 and transmission gear 17 are located below the mounting plate 3, and a protective cover is provided on the outside of the driven gear ring 20. This arrangement can prevent foreign objects from getting stuck in the transmission structure or pinching the operator's hand, thus improving the safety of the equipment.

[0031] A mounting plate 21 is provided on the base 1, located below the driven gear ring 20. Several directional markers 23 are arranged circumferentially on the mounting plate 21. The driven gear ring 20 has a pointing notch 18 for indicating the direction of the corresponding directional marker 23 on the support frame 7. The direction of the fan 8 can be determined by pointing the directional marker 23 to the directional marker 18. By referring to the coordinate direction on the anemometer 11, relevant knowledge can be explained and compared.

[0032] A fixed ring 19 is fixedly installed on the mounting plate 21. A rotating ring 22 is sleeved on the outer side of the fixed ring 19 via a bearing. The driven gear ring 20 and the support frame 7 are both mounted on the rotating ring 22. The fixed ring 19 and the rotating ring 22 are rotatably connected by a bearing structure, which can reduce the friction of rotation and ensure the smooth rotation of the driven gear ring 20.

[0033] The base 1 is equipped with a start switch 5 for controlling the opening and closing of the fan 8 and a wind speed adjustment knob 6 for controlling the output power of the fan 8. The start switch 5 can turn the fan 8 on or off as needed, reducing power waste, while the wind speed adjustment knob 6 can control the output power of the fan 8, thereby controlling the wind speed, allowing for better adjustment of the wind speed for demonstration purposes.

[0034] A glass cover 4 is mounted on the base 1, and a model of a wind vane is placed inside the glass cover 4. The wind vane model can display some commonly used equipment for easy understanding.

[0035] The base 1 houses the relevant control devices and electrical equipment, and also raises the entire operating platform of the equipment to facilitate operation by the operator.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hand-cranked wind direction and speed demonstration device, comprising a base (1), characterized in that, The base (1) is rotatably provided with a driven gear ring (20) and a support frame (7) that rotates synchronously with the driven gear ring (20). The driven gear ring (20) is connected to a hand-cranked drive assembly. A fan (8) is provided on the support frame (7). A stator (15) located at the center of the driven gear ring (20) is fixedly provided on the base (1). A rotor (14) is rotatably provided inside the stator (15). A wire (9) connected to the fan (8) is connected to the rotor (14). A wind direction and wind speed display device located at the center of the rotor (14) is vertically provided on the base (1).

2. The hand-cranked wind direction and speed demonstration device according to claim 1, characterized in that, The fan (8) is provided with two sets of fans at intervals. The wind direction and wind speed display device includes an anemometer (13). The top of the anemometer (13) is rotatably provided with a three-cup ball rotating part (12) aligned with one of the fans (8). The top of the anemometer (13) is fixedly provided with a mounting bracket (24). A wind vane (11) is fixedly connected to the mounting bracket (24). A wind vane (10) aligned with the other fan (8) is rotatably provided on the wind vane (11).

3. The hand-cranked wind direction and speed demonstration device according to claim 2, characterized in that, The bottom of the anemometer (13) is fixedly connected to a screw that is threadedly connected to the base (1).

4. The hand-cranked wind direction and speed demonstration device according to claim 1, characterized in that, The hand-cranked drive assembly includes a mounting plate (3), on which a drive gear (16) and a transmission gear (17) are rotatably mounted. The transmission gear (17) meshes with the drive gear (16) and the driven gear ring (20) respectively. A crank handle (2) is fixedly connected to the shaft of the drive gear (16).

5. A hand-cranked wind direction and speed demonstration device according to claim 4, characterized in that, The drive gear (16) and transmission gear (17) are located below the mounting plate (3), and a protective cover is provided on the outside of the driven gear ring (20).

6. The hand-cranked wind direction and speed demonstration device according to claim 1, characterized in that, The base (1) is provided with a mounting plate (21) located below the driven gear ring (20). Several directional marks (23) are provided on the mounting plate (21) along the circumferential direction. The driven gear ring (20) is provided with a pointing notch (18) for indicating the corresponding directional mark (23) of the support frame (7).

7. A hand-cranked wind direction and speed demonstration device according to claim 6, characterized in that, A fixing ring (19) is fixedly installed on the mounting plate (21). A rotating ring (22) is sleeved on the outside of the fixing ring (19) through a bearing. The driven gear ring (20) and the support frame (7) are both installed on the rotating ring (22).

8. The hand-cranked wind direction and speed demonstration device according to claim 1, characterized in that, The base (1) is provided with a start switch (5) for controlling the opening and closing of the fan (8) and a wind speed adjustment knob (6) for controlling the output power of the fan (8).

9. A hand-cranked wind direction and speed demonstration device according to claim 1, characterized in that, A glass cover (4) is provided on the base (1), and a wind vane model is placed in the glass cover (4).

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