Galloping warning speed measuring device

Abstract

The embodiment of the utility model relates to a galloping warning speed measuring device which comprises a galloping bell body, a wind speed control assembly, a pressure adjusting assembly and a fixing assembly. The galloping bell body comprises a vibration needle, a vortex street generation column and a bell body, the vibration needle and the vortex street generation column are fixed on the bell body in a front-back mode, and the vibration needle generates wake flow vibration through a vortex street generated by the vortex street generation column and drives the bell body to make a sound. The wind speed control assembly is located below the galloping bell body, and the wind speed control assembly controls the wind speed at the vortex street generation column by adjusting the cross-sectional area of the air inlet. The pressure adjusting assembly is located below the wind speed control assembly, the internal gear is connected with an internal rotor of the wind speed control assembly through a transmission shaft, and the pressure adjusting assembly can controllably achieve movement of an internal sliding block through the pressure difference between the windward side and the leeward side, so that the wind speed control assembly is driven to change, and the purpose of adjusting the wind speed is achieved. Therefore, the galloping warning speed measuring device not only can provide warning sound, but also can feed back the speed of the bearing body, so that the galloping warning speed measuring device is good in applicability.

Description

Technical Field

[0001] The utility model relates to a wake galloping sound warning device, in particular to a galloping warning speed measuring device. Background Art

[0002] 1. Wake galloping is an unstable vibration caused by the fluctuating flow around the structure in front of it, which excites the downstream structure. 2. Mechanical wind speed instruments reflect the speed by providing observations that can be identified by the naked eye. 3. Traffic tools are mostly equipped with manual warning bells.

[0003] At present, mechanical wind speed instruments only provide observations that can be discerned by the naked eye to reflect the speed, and rarely provide sound warnings. Even those that provide sound warnings are mostly based on mechanical rotational motion. There is an even greater lack of speed feedback devices on transportation tools. For example, but not limited to the field of bicycles, the speed of bicycles is generally between 16 and 32 kilometers per hour, and the speed of road bicycles may reach 30 to 48 kilometers per hour or even higher. In order to warn passers-by, the current common method is to install manual bicycle bells.

[0004] However, current warning devices more or less require human intervention to achieve the warning effect. Since they need to be operated in a short time, they often fail to serve as a warning in many scenarios. Secondly, mechanical wind speed instruments only provide observations that can be identified by the naked eye to reflect the speed, and rarely use sound to feedback the instant speed. However, in many scenarios, people cannot feedback the instant speed through observation. Even those that provide sound warnings are mostly based on mechanical rotational motion, and the sound frequency is uncertain. Therefore, it is particularly important to manufacture a device that has an automatic warning sound, can timely feedback the instant speed, and has a stable sound. Utility Model Content

[0005] In order to solve the above problems or at least partially solve the above problems, the embodiments of the utility model provide a wake vibration sounding device which is not limited to automatically warning passers-by and reminding cyclists of their riding speed. Wake vibration is an unstable vibration generated by the fluctuating flow bypassing the front structure to stimulate the downstream structure. The speed of the front flow can be adjusted to make the fluctuation frequency of the fluid consistent with the natural frequency of the downstream structure, thereby achieving the purpose of vibrating the downstream structure at the natural frequency.

[0006] The utility model embodiment provides a speed measuring device with a vibrating warning, including a vibrating bell body, a wind speed control component, a pressure regulating component and a fixing component;

[0007] The material of the vibrating bell body is a medium that is easy to produce sound, and the vibrating bell body is composed of a bell body, a vibrating needle and a vortex generating column;

[0008] The vibrating needle is thick at both ends and thin in the middle, which is conducive to forced vibration. The surface of the thick end is designed to be grooved or irregular in structure to increase friction. The vortex generating column is a smooth cylinder with the same diameter as the thick end of the vibrating needle. The vortex generating column and the vibrating needle are fixed to the bell body side by side in front and back. The vortex generating column is fixed on the windward side of the vibrating needle. The vibrating needle achieves maximum amplitude vibration when the vortex frequency generated by the vortex generating column reaches the natural frequency of the vibrating needle, and drives the bell body to vibrate and make sounds.

[0009] The wind speed control component is located below the front of the chi vibration bell, and has two rotors in the wind speed control component. The cross-sectional area of ​​the air inlet is adjusted by rotating the rotors at different angles to control the wind speed at the vortex generating column;

[0010] The vibration bell body and the wind speed control assembly together enclose a ventilation cavity, and the vortex generating column and the vibration needle are placed inside the cavity and arranged front to back;

[0011] The pressure regulating component is composed of a pair of gears, a gear fixing carrier, a slider with meshing teeth, a spring and a base for fixing the spring. The pressure regulating component is located below the wind speed control component. The gear is connected to the rotor in the wind speed control component through a transmission shaft. The pressure regulating component can controllably realize the movement of the internal slider through external force, i.e., the pressure difference between the windward side and the leeward side and the elastic potential energy of the spring, and drive the rotor in the wind speed control component to rotate through the meshing teeth, thereby achieving the purpose of adjusting the wind speed at the vortex generating column.

[0012] Compared with the prior art, the technical solution provided by the embodiment of the utility model has the following advantages:

[0013] The embodiment of the utility model provides a warning speed measuring device based on wake galloping;

[0014] The instant vortex generation frequency can be reflected by the natural frequency of the vibrating needle, thereby calculating the wind speed, that is, the speed of movement of the carrier. The combined use of the wind speed control component and the pressure regulating component can make the wind speed at the vortex generating column constant under wind pressures of different intensities, thereby generating a continuous warning sound, and the sound is constant and soft without mechanical relative movement, so it has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the utility model, and together with the description, are used to explain the principles of the embodiments of the utility model.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 An exploded view of the galloping warning speed measuring device according to an embodiment of the utility model;

[0018] Figure 2 This is a front schematic diagram of the galloping warning speed measuring device according to an embodiment of the utility model;

[0019] Figure 3 It is a side schematic diagram of the galloping warning speed measuring device according to an embodiment of the utility model;

[0020] Figure 4 A bottom view of the galloping ring of the galloping warning speed measuring device according to an embodiment of the utility model;

[0021] Figure 5 A bottom view of the wind speed control assembly of the galloping warning speed measuring device according to an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of the inner rotor of the wind speed control assembly of the galloping warning speed measuring device described in an embodiment of the utility model.

[0023] Among them, 1. Vibrating bell body; 2. Wind speed control component; 3. Pressure regulating component; 4. Fixed component; 11. Vibrating needle; 12. Vortex generating column; 13. Bell body; 21. Rotor; 22. Main cavity; 23. Rotor fixing isolation plate; 31. Gear; 32 Gear fixing carrier; 33 Sliding block with meshing teeth; 34 Spring; 35 Base for fixing the spring. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the scheme of the embodiments of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the utility model, but the embodiments of the utility model can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the utility model, rather than all of the embodiments.

[0026] 1. If Figure 1As shown, this embodiment provides a galloping vibration warning speed measuring device, including a galloping vibration bell body 1, a wind speed control component 2, a pressure regulating component 3 and a fixing component 4.

[0027] The Chi Zhen bell body 1 is located at the top, the wind speed control component 2 is located in the front and bottom of the Chi Zhen bell body, and the pressure regulating component 3 is located below the wind speed control component 2. Its internal gear 31 forms a fixed mechanical structure with the rotor inside the wind speed control component through the transmission shaft, and the fixed component 4 is located at the bottom of the pressure regulating component 3.

[0028] The chi vibration bell body 1 includes a vibrating needle 11, a vortex generating column 12 and a bell body 13, the wind speed control component 2 includes two rotors 21, a main body cavity 22, and a rotor fixing isolation plate 23, and the pressure regulating component 3 includes two gears 31, a gear fixing carrier 32, a slider 33 with meshing teeth, a spring 34, and a base 35 for fixing the spring.

[0029] When implementing it, refer to Figure 1-4 As shown, the chirping bell body 1 and the wind speed control component 2 form a cavity structure, through which wind of a certain speed adjusted by the rotor 21 can pass. The vortex generating column 12 and the vibrating needle 11 are fixed to the bell body 13 and placed in the cavity formed by the chirping bell body 1 and the wind speed control component 2. When wind of a certain speed passes through the vortex generating column 12, a Karman vortex street of a certain frequency is generated. When the vortex street passes through the vibrating needle 11, wake chirping is generated. When the frequency reaches the natural frequency of the vibrating needle, the vibrating needle vibrates with the maximum amplitude, and at the same time drives the bell body 13 to make a sound.

[0030] Reference Figure 1 Figure 5 and Figure 6 As shown, the two rotors 21 inside the wind speed control component 2 are fixedly connected with the two gears 31 inside the pressure regulating component 3. When the gear 31 rotates, the rotor 21 is driven to rotate. The rotation of the rotor causes the windward area of ​​the wind speed control component 2 to change. It can be seen from the Bernoulli equation that the change in the windward area of ​​the wind speed control component 2 causes the wind speed at the vortex generating column to change, so as to adjust the wind speed at the vortex generating column 12 under different wind pressures.

[0031] Reference Figure 1 The two gears 31 of the pressure regulating assembly 3 shown in the figure form an interlocking connection with a slider 33 with interlocking teeth. The slider 33 with interlocking teeth is placed inside a cavity formed by a gear fixing carrier 32 and a base 35 for fixing a spring. The slider 33 with interlocking teeth and the base 35 for fixing a spring form a cavity and place a spring 34. The slider 33 with interlocking teeth can move relative to the cavity formed by the gear fixing carrier 32 and the base 35 for fixing a spring under the action of the elastic potential energy of the spring 34 and the external force, namely, the pressure generated by the windward side of the cylindrical flow and the negative pressure generated by the leeward side. The movement of the slider 33 with interlocking teeth can drive the two gears 31 to rotate, and the rotation of the two gears 31 can drive the two rotors 21 to rotate.

[0032] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The above description is only a specific implementation of the embodiment of the utility model, so that those skilled in the art can understand or implement the embodiment of the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the embodiment of the utility model. Therefore, the embodiment of the utility model will not be limited to these embodiments described herein, but will conform to the widest range consistent with the principles and novel features of the embodiment of the utility model described herein.

Claims

1. A galloping warning speed measuring device, characterized in that: It comprises a vibrating bell body (1), a wind speed control component (2), a pressure regulating component (3) and a fixing component (4); The chirping bell body (1) is arranged at the top of the warning speed measuring device, and the wind speed control component (2) is arranged in front of and below the chirping bell body; the pressure regulating component (3) is arranged below the wind speed control component and forms a mechanical structure with the rotor inside the wind speed control component through a transmission shaft, and the fixing component (4) is located at the bottom of the pressure regulating component (3); The vibrating bell body (1) comprises a vibrating needle (11), a vortex generating column (12) and a bell body (13); The wind speed control assembly (2) comprises two rotors (21), a main body cavity (22), and a rotor fixing isolation sheet (23); The pressure regulating assembly (3) comprises two gears (31), a gear fixing carrier (32), a sliding block (33) with meshing teeth, a spring (34), and a base (35) for fixing the spring.

2. The galloping warning speed measuring device according to claim 1 is characterized in that The vibrating bell body (1) and the wind speed control component (2) form a cavity structure; the vibrating needle (11) and the vortex generating column (12) are fixed to the bell body (13) and placed in the cavity formed by the vibrating bell body (1) and the wind speed control component (2); the vortex generating column (12) and the vibrating needle (11) are arranged in front and back, and the vortex generating column (12) is located on the windward side.

3. The galloping warning speed measuring device according to claim 1 is characterized in that The two rotors (21) inside the wind speed control component (2) are fixedly connected to the two gears (31) inside the pressure regulating component (3); the two gears (31) of the pressure regulating component (3) are engaged with a slider (33) with engaging teeth; the slider (33) with engaging teeth is placed inside a cavity formed by a gear fixing carrier (32) and a base (35) for fixing a spring; the slider (33) with engaging teeth and the base (35) for fixing a spring form a cavity in which a spring (34) is placed.

4. The galloping warning speed measuring device according to claim 1 or 2, characterized in that The speed of the fluid in the cavity structure formed by the vibrating bell body (1) and the wind speed control component (2) can be adjusted by rotating the two rotors (21).

5. The galloping warning speed measuring device according to claim 1, 2 or 3, characterized in that: The slider (33) with meshing teeth can move relative to a cavity formed by a gear fixing carrier (32) and a base (35) of a fixing spring under the combined action of the elastic potential energy of a spring (34) and an external force acting on the slider (33) with meshing teeth. The slider (33) with meshing teeth can drive the two gears (31) to rotate, and the rotation of the two gears (31) can drive the two rotors (21) to rotate.

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