Wind speed warning device

Abstract

The application relates to the technical field of wind speed measurement, and discloses a wind speed warning tool which comprises a base, a first rotating shaft vertically arranged rotatably, a mounting seat arranged at the top of the first rotating shaft, a second rotating shaft horizontally arranged rotatably in the mounting seat, a first contact rod arranged on the second rotating shaft, a first air volume comparison plate fixed on the upper portion of the first rotating shaft, a second contact rod arranged on the upper portion of the first air volume comparison plate, a first wind baffle and a second wind baffle respectively fixed on the two ends of the second rotating shaft, and an alarm, one end of a loop line of the alarm being arranged on the first contact rod and the other end being arranged on the second contact rod. When the wind speed exceeds a set threshold value, the first contact rod is rotated to contact the second contact rod along with the second rotating shaft, the loop line is connected, and an alarm is sent. The application has the advantages of simple structure, convenient movement, convenience in application in the complex environment of a shipbuilding construction site, and assistance in the development of welding operation.

Description

Technical Field

[0001] This invention relates to the field of wind speed measurement technology, and in particular to a wind speed warning fixture. Background Technology

[0002] During the shipbuilding phase, welding operations are required at every stage, including the assembly of segmented components, the fabrication of sections, the final assembly, and the installation. Welding operations have high requirements for environmental conditions; for example, when using electrode welding, the wind speed must be ≤5 m / s, and when using CO2 gas shielded welding, the wind speed must be ≤2 m / s. If welding is performed in winds exceeding these speeds, the weld quality will be poor, resulting in various welding defects such as surface porosity and internal cracks. Currently, wind speed monitoring points are typically set up at the construction site. However, existing wind speed monitoring devices are complex in structure, inconvenient to move, and unsuitable for the complex environment of shipbuilding construction sites. Summary of the Invention

[0003] In view of the above problems, the purpose of this invention is to provide a wind speed warning fixture to solve the problems of existing wind speed monitoring devices being complex in structure and inconvenient to move.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The wind speed warning fixture of the present invention includes:

[0006] A base, on which a first rotating shaft is rotatably and vertically arranged, a mounting seat is provided on the top of the first rotating shaft, and a second rotating shaft is rotatably and horizontally arranged inside the mounting seat, and a first contact rod is provided on the second rotating shaft;

[0007] A first air volume comparison plate, one side of which is axially fixed to the upper part of the first rotating shaft, and a second contact rod is provided on the upper part of the first air volume comparison plate.

[0008] A first wind deflector and a second wind deflector are respectively fixed at both ends of the second rotating shaft, and the first wind deflector and the second wind deflector are symmetrically arranged on both sides of the first rotating shaft.

[0009] An alarm is mounted on the base, with one end of the alarm's return line disposed on the first contact rod and the other end of the alarm's return line disposed on the second contact rod.

[0010] Under the action of wind, the first wind deflector and the second wind deflector drive the second rotating shaft to rotate around the central axis of the second rotating shaft. When the wind speed exceeds the set threshold, the first contact rod rotates with the second rotating shaft to contact the second contact rod, so that the return line of the alarm is connected and an alarm is issued.

[0011] Preferably, the first rotating shaft, the second rotating shaft, the first wind deflector, and the second wind deflector are arranged on the same plane, and the vertical plane formed by the first rotating shaft, the second rotating shaft, the first wind deflector, and the second wind deflector is perpendicular to the first air volume comparison plate.

[0012] Preferably, the first air volume comparison plate is provided with multiple air volume comparison lines, and the multiple air volume comparison lines converge at a point at the upper corner where the first air volume comparison plate intersects with the first rotating shaft.

[0013] Preferably, both the first wind deflector and the second wind deflector extend vertically downwards, and the upper side of the first wind deflector and the upper side of the second wind deflector are respectively fixed to the second rotating shaft.

[0014] Preferably, the first contact rod includes a first vertical section and a first horizontal section, the first vertical section is fixed on the second rotating shaft, the first horizontal section is vertically fixed on the first vertical section, and the first horizontal section extends in a direction close to the first rotating shaft.

[0015] Preferably, the second contact rod includes a second vertical section and a second horizontal section, the second horizontal section is fixed on the first air volume comparison plate, the second vertical section is fixed on the second horizontal section, and the second vertical section extends vertically upward.

[0016] Preferably, a second air volume comparison plate is fixed to the upper part of the first rotating shaft. The second air volume comparison plate and the first air volume comparison plate are arranged symmetrically with respect to the central axis of the first rotating shaft. A third contact rod is provided on the second air volume comparison plate. A branch line of the other end of the alarm's return line is fixed on the third contact rod. When the third contact rod contacts the first contact rod, the return line can be connected.

[0017] Preferably, the areas of the first wind deflector and the second wind deflector are equal, and the areas of the first air volume comparison plate and the second air volume comparison plate are both smaller than the area of ​​the first wind deflector.

[0018] Preferably, the base is inverted U-shaped, and one side wall of the base has a mounting hole. A nut is installed in the mounting hole, and a bolt is threaded into the nut.

[0019] Preferably, a magnetic block is provided on the other side wall of the base.

[0020] Compared with the prior art, the wind speed warning fixture of this invention has the following advantages:

[0021] The wind speed warning fixture of this invention comprises a first airflow comparison plate mounted on a first rotating shaft, a second contact rod mounted on the first airflow comparison plate, and a first wind deflector, a second wind deflector, and a first contact rod mounted on a second rotating shaft. Under wind force, the first and second wind deflectors drive the second rotating shaft to rotate, causing the first contact rod to rotate synchronously. When the wind speed exceeds a set threshold, the first contact rod rotates with the second rotating shaft until it contacts the second contact rod, thus connecting the alarm's return path and triggering an alarm, indicating that the wind speed exceeds the set threshold. This invention has a simple structure, and the entire fixture can be moved easily via a movable base, making it suitable for use in complex environments such as shipbuilding construction sites to assist welding operations. Furthermore, in this invention, when the wind forces on the first and second wind deflectors are different, the second rotating shaft rotates in a horizontal plane until the wind forces on the first and second wind deflectors are equal, thereby allowing the first and second wind deflectors to track the direction of the maximum wind force. The simple structure also facilitates equipment maintenance in complex construction environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the wind speed warning fixture described in the first embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation of the first wind baffle and the second wind baffle in the first embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the first air volume comparison plate in the first embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the air volume comparison line on the first air volume comparison board in the first embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the base structure in the first embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the wind speed warning fixture described in the first embodiment of the present invention;

[0028] In the diagram, 1 is the base; 11 is the nut; 12 is the bolt; 13 is the magnetic block; 2 is the first rotating shaft; 3 is the second rotating shaft; 31 is the first contact rod; 4 is the first airflow comparison plate; 41 is the second contact rod; 42 is the airflow comparison line; 5 is the first baffle plate; 6 is the second baffle plate; 7 is the alarm; 8 is the second airflow comparison plate; and 81 is the third contact rod. Detailed Implementation

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0032] First Embodiment

[0033] like Figure 1 - Figure 5As shown, an embodiment of the wind speed warning fixture of the present invention includes a base 1, a first air volume comparison plate 4, a first wind deflector 5, a second wind deflector 6, and an alarm 7. A first rotating shaft 2 is rotatably and vertically mounted on the base 1, with its rotation axis being its own central axis. A mounting base is provided on the top of the first rotating shaft 2. A second rotating shaft 3 is rotatably and horizontally mounted within the mounting base, with its rotation axis within the mounting base being its own central axis. Since the mounting base is fixed to the first rotating shaft 2, when the first rotating shaft 2 rotates, the second rotating shaft 3 can rotate synchronously around the central axis of the first rotating shaft 2. A first contact rod 31 is provided on the second rotating shaft 3. One side of the first air volume comparison plate 4 is axially fixed to the upper part of the first rotating shaft 2, and this side of the first air volume comparison plate 4 is in contact with the first rotating shaft 2. The first air volume comparison plate 4 is provided with a second contact rod 41 on its upper part; the first wind deflector 5 and the second wind deflector 6 are respectively fixed at both ends of the second rotating shaft 3, and the first wind deflector 5 and the second wind deflector 6 are symmetrically arranged on both sides of the first rotating shaft 2; the alarm 7 is installed on the base 1, one end of the return line of the alarm 7 is set on the first contact rod 31, and the other end of the return line of the alarm 7 is set on the second contact rod 41; under the action of wind force, the first wind deflector 5 and the second wind deflector 6 drive the second rotating shaft 3 to rotate around the central axis of the second rotating shaft 3. When the wind speed exceeds the set threshold, the first contact rod 31 rotates with the second rotating shaft 3 to contact the second contact rod 41, so that the return line of the alarm 7 is connected and an alarm is sounded.

[0034] The invention features a simple structure, and the entire fixture can be moved easily via the movable base 1, making it suitable for use in complex shipbuilding construction environments to assist welding operations. Furthermore, in this invention, when the wind forces acting on the first wind deflector 5 and the second wind deflector 6 differ, the second rotating shaft 3 rotates in the horizontal plane until the wind forces acting on the first wind deflector 5 and the second wind deflector 6 are equal. This allows the first wind deflector 5 and the second wind deflector 6 to track the direction of the maximum wind force. The simple structure also facilitates equipment maintenance in complex construction environments. Moreover, the alarm 7 only sounds when the first contact rod 31 and the second contact rod 41 come into contact, saving power and providing a clear warning of excessive wind speed.

[0035] In this invention, the first wind deflector 5 and the second wind deflector 6 drive the second rotating shaft 3 to rotate around its own axis under the action of wind force. The first contact rod 31 rotates with the second rotating shaft 3. By setting the relative position of the second contact rod 41 on the first air volume comparison plate 4, the rotation amplitude of the first contact rod 31 when it contacts the second contact rod 41 can be determined. Thus, the position of the second contact rod 41 on the first air volume comparison plate 4 can be determined according to the required warning wind speed.

[0036] In this embodiment, the mounting base can be a bearing housing, and the second rotating shaft 3 is mounted in the mounting base via a bearing. The alarm 7 is an audible and visual alarm 7, specifically a 1.5V audible and visual alarm 7.

[0037] In this embodiment, the first rotating shaft 2, the second rotating shaft 3, the first wind deflector 5, and the second wind deflector 6 are arranged coplanarly. The first rotating shaft 2, the first wind deflector 5, the second wind deflector 6, and the second rotating shaft 3 can rotate synchronously around the central axis of the first rotating shaft 2, which facilitates adjusting the position of the first wind deflector 5 and the second wind deflector 6 to face the wind direction with the maximum wind force. Furthermore, the vertical plane formed by the first rotating shaft 2, the second rotating shaft 3, the first wind deflector 5, and the second wind deflector 6 is perpendicular to the first air volume comparison plate 4. When the first rotating shaft 2 and the second rotating shaft 3 rotate synchronously around the central axis of the first rotating shaft 2, the first air volume comparison plate 4 is fixed to the first rotating shaft 2, so that the first air volume comparison plate 4 always remains perpendicular to the vertical plane formed by the first rotating shaft 2, the second rotating shaft 3, the first wind deflector 5, and the second wind deflector 6, so that the relative position of the first contact rod 31 and the second contact rod 41 is fixed, and further so that the first contact rod 31 can contact the second contact rod 41 when rotating with the second rotating shaft 3 around the central axis of the second rotating shaft 3. When the wind direction is parallel to the first wind deflector 5 or the second wind deflector 6, under the action of the wind, the first air volume comparison plate 4 drives the first rotating shaft 2 to rotate around its own central axis. At the same time as the first rotating shaft 2 rotates, it drives the second rotating shaft 3 to rotate around the central axis of the first rotating shaft 2, thereby adjusting the position of the first wind deflector 5 and the second wind deflector 6 so that the wind force can act on the first wind deflector 5 and the second wind deflector 6. Until the first wind deflector 5 and the second wind deflector 6 are directly facing the wind force, the second rotating shaft 3 no longer rotates around the central axis of the first rotating shaft 2. The first wind deflector 5 and the second wind deflector 6 drive the second rotating shaft 3 to rotate around its own central axis, measuring the wind speed and issuing a wind speed warning.

[0038] Furthermore, in this embodiment, as Figure 4 As shown, the first airflow comparison plate 4 is provided with multiple airflow comparison lines 42, which converge at a point at the upper corner where the first airflow comparison plate 4 intersects with the first rotating shaft 2. Different airflow comparison lines 42 represent different wind speeds. When the first wind deflector 5 and the second wind deflector 6 are subjected to the same wind force, the first wind deflector 5 and the second wind deflector 6 rotate around the second rotating shaft 3 with the same upward tilting amplitude. Taking the first wind deflector 5 as an example, when the first wind deflector 5 rotates around the central axis of the second rotating shaft 3, the side of the first wind deflector 5 adjacent to the first airflow comparison plate 4 tilts upward. By determining the airflow comparison line 42 corresponding to the upward tilting position of this side, the corresponding wind speed can be obtained.

[0039] In this embodiment, the wind speed values ​​indicated by the airflow comparison line 42 can be 0.5 m / s, 1 m / s, 1.5 m / s, 2 m / s, and 5 m / s, respectively, to suit the requirements of different welding materials in engineering welding processes. It should be noted that the specific location of the airflow comparison line 42 can be determined through actual testing. Figure 4 The image shown is for illustrative purposes only.

[0040] In this embodiment, as Figure 2 As shown, both the first wind deflector 5 and the second wind deflector 6 extend vertically downwards, and the upper sides of the first wind deflector 5 and the second wind deflector 6 are fixed to the second rotating shaft 3. The first wind deflector 5 and the second wind deflector 6 are coplanar, and the first wind deflector 5 and the second wind deflector 6 are arranged at intervals along the axial direction of the second rotating shaft 3.

[0041] In this embodiment, the middle part of the second rotating shaft 3 is mounted on the mounting base, one side of the first wind baffle 5 is flush with one end face of the second rotating shaft 3, and one side of the second wind baffle 6 is flush with the other end face of the second rotating shaft 3.

[0042] In this embodiment, the first contact rod 31 includes a first vertical section and a first horizontal section. The first vertical section is fixed on the second rotating shaft 3, and the first horizontal section is vertically fixed on the first vertical section, extending towards the first rotating shaft 2. The first contact rod 31 may be U-shaped. When the first contact rod 31 rotates with the second rotating shaft 3, the first horizontal section rotates around the central axis of the second rotating shaft 3, and the first horizontal section contacts the second contact rod 41, connecting the return line of the alarm 7.

[0043] In this embodiment, the second contact rod 41 includes a second vertical section and a second horizontal section. The second horizontal section is fixed to the first airflow comparison plate 4, and the second vertical section is fixed to the second horizontal section, extending vertically upwards. The second contact rod 41 may be U-shaped. When the first horizontal section of the first contact rod 31 rotates around the central axis of the second rotating shaft 3, the first horizontal section contacts the second vertical section, connecting the return path of the alarm 7.

[0044] In this embodiment, as Figure 5 As shown, the base 1 is inverted U-shaped, and one side wall of the base 1 has a mounting hole. A nut 11 is installed in the mounting hole, and a bolt 12 is threaded onto the nut 11. When the U-shaped groove of the base 1 is engaged with the mounting component, the bolt 12 passes through the nut 11 and abuts against the mounting component, thereby fixing the base 1 to the mounting component and securing the entire wind speed warning fixture.

[0045] Furthermore, a magnetic block 13 is provided on another side wall of the base 1, which can fix the base 1 by magnetic attraction. Multiple magnetic blocks 13 can be provided.

[0046] It should be noted that, depending on the specific construction environment, the base 1 can be fixed by clamping or magnetic adsorption, or a dual fixing method of clamping and magnetic adsorption can be used at the same time.

[0047] In this embodiment, the first baffle plate 5 and the second baffle plate 6 are identical in size, both 100mm in length, 100mm in width, and 2mm in thickness, and are both made of acrylic sheet. The second rotating shaft 3 is a steel shaft with a length of 240mm and a diameter of 2mm. The first airflow comparison plate 4 has a length of 100mm, a width of 100mm, and a thickness of 2mm, and is made of acrylic sheet. The first rotating shaft 2 is a steel shaft with a length of 200mm and a diameter of 2mm. The base 1 has a length of 50mm, a width of 50mm, and a height of 50mm, and the wall thickness of the U-shaped groove is 4mm. The magnetic block 13 is circular, with a thickness of 4mm and a diameter of 20mm. The nut 11 is an M10 nut. The bolt 12 is an M10 bolt with a length of 80mm.

[0048] The working process of this embodiment is as follows:

[0049] The base 1 is fixed in the welding construction area. Depending on the site construction environment, it can be fixed by clamping or magnetic adsorption. The first wind deflector 5 and the second wind deflector 6 rotate around the second rotating shaft 3 under the action of wind. When the first wind deflector 5 and the second wind deflector 6 face the wind direction and are subjected to the same wind force, the first wind deflector 5 and the second wind deflector 6 only rotate around the second rotating shaft 3. The wind force can be determined by the air volume comparison line 42 on the first air volume comparison plate 4. At this time, the first rotating shaft 2 and the first air volume comparison plate 4 are fixed, and the second rotating shaft 3 only rotates around its own central axis. The second rotating shaft 3 does not rotate in the horizontal plane. The first contact rod 31 rotates around the central axis of the second rotating shaft 3. When the wind speed exceeds the preset threshold, the first contact rod 31 rotates to contact the second contact rod 41, connecting the return line of the alarm 7, and the alarm 7 sounds an alarm.

[0050] When the first wind deflector 5 and the second wind deflector 6 are not directly facing the wind direction, the wind force on the first wind deflector 5 and the second wind deflector 6 is inconsistent. The first wind deflector 5 and the second wind deflector 6 rotate under the action of the wind force. At the same time, the second rotating shaft 3 rotates around the central axis of the first rotating shaft 2. The second rotating shaft 3, the first rotating shaft 2, the first air volume comparison plate 4, the first wind deflector 5 and the second wind deflector 6 all rotate around the central axis of the first rotating shaft 2 until the first wind deflector 5 and the second wind deflector 6 are directly facing the wind direction, so that the wind force on the first wind deflector 5 and the second wind deflector 6 is consistent. After that, the second rotating shaft 3, the first rotating shaft 2, and the first air volume comparison plate 4 no longer rotate around the central axis of the first rotating shaft 2. Only the first wind deflector 5 and the second wind deflector 6 rotate around the central axis of the second rotating shaft 3. The wind force can be determined by the air volume comparison line 42 on the first air volume comparison plate 4. When the first contact rod 31 rotates to contact the second contact rod 41, the return line of the alarm 7 is connected, and the alarm 7 sounds an alarm.

[0051] Second Embodiment

[0052] The structure of this embodiment of the wind speed warning fixture is basically the same as that of the first embodiment. The only difference between this embodiment and the first embodiment is that, in this embodiment, as shown in the example... Figure 6 As shown, a second airflow comparison plate 8 is fixed to the upper part of the first rotating shaft 2. The second airflow comparison plate 8 and the first airflow comparison plate 4 are arranged symmetrically with respect to the central axis of the first rotating shaft 2. A third contact rod 81 is provided on the second airflow comparison plate 8. A branch line of the other end of the return line of the alarm 7 is fixed on the third contact rod 81. When the third contact rod 81 contacts the first contact rod 31, the return line can be connected. By setting the second airflow comparison plate 8 and the third contact rod 81, when the first contact rod 31 rotates around the central axis of the second rotating shaft 3, it can contact the second contact rod 41 or the third contact rod 81 according to the specific rotation direction, thus connecting the return line. Even when the wind direction is completely parallel to the first airflow comparison plate 4, the first contact rod 31 can rotate away from the first airflow comparison plate 4, and the first contact rod 31 can rotate to contact the third contact rod 81.

[0053] In this embodiment, the areas of the first wind deflector 5 and the second wind deflector 6 are equal, and the areas of the first air volume comparison plate 4 and the second air volume comparison plate 8 are both smaller than the area of ​​the first wind deflector 5, so as to avoid the air volume of the first air volume comparison plate 4 and the second air volume comparison plate 8 being greater than the air volume of the first wind deflector 5 and the second wind deflector 6. The areas of the first air volume comparison plate 4 and the second air volume comparison plate 8 are equal, wherein the area of ​​the first air volume comparison plate 4 can be 0.3 times the area of ​​the first wind deflector 5.

[0054] It should be noted that when only the first air volume comparison plate 4 is available, the area of ​​the first air volume comparison plate 4 can be equal to the area of ​​the first wind deflector 5 or the second wind deflector 6.

[0055] Furthermore, in this embodiment, the first wind deflector 5 and the second wind deflector 6 are arranged on the same plane, the first air volume comparison plate 4 and the second air volume comparison plate 8 are arranged on the same plane, and the surface formed by the first wind deflector 5 and the second wind deflector 6 is perpendicular to the surface formed by the first air volume comparison plate 4 and the second air volume comparison plate 8.

[0056] It should be noted that in this embodiment, the structure of the second air volume comparison plate 8 is exactly the same as the structure of the first air volume comparison plate 4.

[0057] The working process of this embodiment is roughly the same as that of the first embodiment. The difference is that when the wind direction is parallel to the first air volume comparison plate 4, and the first wind deflector 5 and the second wind deflector 6 rotate away from the first air volume comparison plate 4, the wind speed is determined by the air volume comparison line 42 on the second air volume comparison plate 8, and the alarm 7 is connected by contacting the first contact rod 31 and the third contact rod 81.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A wind speed warning fixture, characterized in that, include: A base, on which a first rotating shaft is rotatably and vertically arranged, a mounting seat is provided on the top of the first rotating shaft, and a second rotating shaft is rotatably and horizontally arranged inside the mounting seat, and a first contact rod is provided on the second rotating shaft; A first air volume comparison plate, one side of which is axially fixed to the upper part of the first rotating shaft, and a second contact rod is provided on the upper part of the first air volume comparison plate. A first wind deflector and a second wind deflector are respectively fixed at both ends of the second rotating shaft, and the first wind deflector and the second wind deflector are symmetrically arranged on both sides of the first rotating shaft. An alarm is mounted on the base, with one end of the alarm's return line disposed on the first contact rod and the other end of the alarm's return line disposed on the second contact rod. When the wind forces on the first and second wind deflectors are different, the second rotating shaft rotates in the horizontal plane until the wind forces on the first and second wind deflectors are the same; under the action of the wind force, the first and second wind deflectors drive the second rotating shaft to rotate around the central axis of the second rotating shaft. When the wind speed exceeds the set threshold, the first contact rod rotates with the second rotating shaft to contact the second contact rod, so that the return line of the alarm is connected and an alarm is triggered. The first rotating shaft, the second rotating shaft, the first wind deflector, and the second wind deflector are arranged on the same plane, and the vertical plane formed by the first rotating shaft, the second rotating shaft, the first wind deflector, and the second wind deflector is perpendicular to the first air volume comparison plate. The first air volume comparison plate is provided with multiple air volume comparison lines, and the multiple air volume comparison lines converge at a point at the upper corner where the first air volume comparison plate intersects with the first rotating shaft.

2. The wind speed warning fixture according to claim 1, characterized in that, Both the first wind deflector and the second wind deflector extend vertically downwards, and the upper side of the first wind deflector and the upper side of the second wind deflector are respectively fixed to the second rotating shaft.

3. The wind speed warning fixture according to claim 1, characterized in that, The first contact rod includes a first vertical section and a first horizontal section. The first vertical section is fixed on the second rotating shaft, and the first horizontal section is vertically fixed on the first vertical section. The first horizontal section extends in a direction close to the first rotating shaft.

4. The wind speed warning fixture according to claim 1, characterized in that, The second contact rod includes a second vertical section and a second horizontal section. The second horizontal section is fixed on the first air volume comparison plate, and the second vertical section is fixed on the second horizontal section, with the second vertical section extending vertically upward.

5. The wind speed warning fixture according to claim 1, characterized in that, A second air volume comparison plate is also fixed on the upper part of the first rotating shaft. The second air volume comparison plate and the first air volume comparison plate are arranged symmetrically with respect to the central axis of the first rotating shaft. A third contact rod is provided on the second air volume comparison plate. A branch line of the other end of the alarm's return line is fixed on the third contact rod. When the third contact rod contacts the first contact rod, the return line of the alarm is connected.

6. The wind speed warning fixture according to claim 5, characterized in that, The first wind deflector and the second wind deflector have the same area, and the areas of the first air volume comparison plate and the second air volume comparison plate are both smaller than the area of ​​the first wind deflector.

7. The wind speed warning fixture according to claim 1, characterized in that, The base is inverted U-shaped, and one side wall of the base has a mounting hole. A nut is installed in the mounting hole, and a bolt is threaded into the nut.

8. The wind speed warning fixture according to claim 7, characterized in that, A magnetic block is provided on the other side wall of the base.

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