Swing wind-resistant guideboard

Abstract

The invention provides a swing wind-resistant guideboard which comprises a fixed base, a stand column, an arm rod and a guideboard surface, the guideboard surface is connected to the arm rod through a rotatable mounting structure, and the rotatable mounting structure is configured to allow the guideboard surface to rotate around a rotating axis, so that the guideboard surface can swing along with wind under the action of strong wind to adjust the windward angle of the guideboard surface; and the windward area is reduced to realize resistance reduction. Compared with the static wind-resistant strategy of static braking in the prior art, the wind-resistant guideboard has the advantages that the load of strong wind on the whole structure of the guideboard can be remarkably reduced, the damage resistance in extreme weather is improved, the wind-resistant performance is guaranteed, meanwhile, the strength requirements for the foundation structure and the stand columns are reduced, and therefore the construction cost is greatly saved.

Description

Technical Field

[0001] The present application belongs to the technical field of road signs, and in particular relates to a swing-type road sign with wind-resistant function. Background Art

[0002] Current road signs typically utilize a fixed installation structure, typically consisting of a fixed base, a column, an arm, and a sign, with the sign and arm remaining relatively stationary. Numerous such static road signs have been damaged due to their inability to withstand strong wind loads, resulting in significant economic losses. This demonstrates that the existing design concept of relying on a static sign to withstand strong winds suffers from insufficient wind resistance in extreme weather conditions such as super typhoons. Summary of the Invention

[0003] The purpose of this application is to provide a swinging wind-resistant road sign, so as to achieve the technical effect of being able to unload force and resist wind by swinging in extreme weather and remain stable and still under normal conditions.

[0004] In order to achieve the above-mentioned purpose of the invention, the present application proposes a swinging wind-resistant road sign that is different from the existing static wind-resistant technology. The core of the swinging wind-resistant road sign is to achieve dynamic force unloading of the sign surface through a rotatable structure.

[0005] The present application provides a swinging wind-resistant road sign, comprising a fixed base, a column, an arm and a sign face, characterized in that: the sign face is connected to the arm through a rotatable mounting structure, and the rotatable mounting structure is provided with a rotation axis extending along a preset direction (the rotation axis forms an angle with the extension direction of the arm, and the angle is preferably 0°), and the rotation axis is arranged at the connection between the arm and the sign face; the rotatable mounting structure is configured to allow the sign face to rotate around the rotation axis, so that the sign face can swing with the wind under the action of strong winds to adjust its own windward angle, thereby reducing the windward area to achieve resistance reduction.

[0006] Preferably, the rotation axis coincides with the center line of the arm, so that the card face can rotate around the center line of the arm.

[0007] Preferably, the rotatable mounting structure is selected from one of a bearing mounting structure, a hanging slip ring mounting structure or a hinge mounting structure.

[0008] Preferably, the card face is also connected to an overload release device, which includes but is not limited to a limiting permanent magnet; when the wind force is small, the limiting permanent magnet holds the card face through magnetic attraction to keep the card face still; when the wind is strong, the wind force applied to the card face is greater than the magnetic attraction, so that the card face breaks free from the magnetic attraction restriction and swings with the wind.

[0009] The overload release device described in this application is designed to automatically release the restraint on the playing card when the wind force acting on the playing card exceeds a set threshold, allowing the playing card to swing and release the wind load. Its operating principle is based on a balance of forces: under normal conditions, a preset force (such as magnetic attraction) limits the rotation of the playing card. The restraint is released when the external force exceeds a preset value. In specific implementations, existing overload protection structures compatible with the technical solutions of this application, such as mechanical spring-type restraints and electromagnetic pull-on devices, can be used, and these will not be discussed further here.

[0010] Compared with the prior art, this application has the following beneficial technical effects.

[0011] First, innovation in wind-resistant mechanism: This application adopts a swinging wind-resistant strategy of "dynamic braking", adjusting the windward angle through the controllable rotation of the sign. Compared with the static wind-resistant strategy of "static braking" in the existing technology, it can significantly reduce the load of strong winds on the overall structure of the road sign and improve the ability to resist damage in extreme weather.

[0012] Second, strong adaptability: Through the design of the overload release device, the trigger threshold can be set according to the actual application scenario, so as to achieve dynamic wind resistance of the road sign in extreme weather (such as strong typhoons) and stable stillness under normal conditions. While ensuring wind resistance, it reduces the strength requirements for the foundation structure and columns, thereby saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a schematic diagram of the structure of a swaying wind-resistant road sign according to the first embodiment of the present application.

[0014] FIG2 is a schematic diagram of the structure of a swaying wind-resistant road sign according to the second embodiment of the present application.

[0015] FIG3 is a schematic diagram of the structure of a swaying wind-resistant road sign according to the third embodiment of the present application.

[0016] FIG4 is a schematic diagram of a typical structure of a road sign in the prior art.

[0017] FIG5 is another schematic diagram of a typical structure of a road sign in the prior art.

[0018] Explanation of the reference numerals: 1 - column, 2 - arm, 3 - plate, 4 - rotatable mounting structure, 5 - fixed base, 6 - permanent magnet (i.e. overload release device), 7 - rotation axis. DETAILED DESCRIPTION

[0019] In order to make the technical solution, creative features, objectives and effects of this application easy to understand, this application is further explained below in conjunction with specific embodiments and drawings.

[0020] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0021] It should be noted that, unless otherwise expressly specified or limited, the terms "installation" and "connection" should be understood in a broad sense. For example, fixed connection, detachable connection, or integral connection may be adopted. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0022] Example 1.

[0023] As shown in FIG1 , a swaying wind-resistant road sign comprises a fixed base 5 , a column 1 , an arm 2 , a sign face 3 and a bearing-type rotatable mounting structure 4 .

[0024] A fixed base 5 is buried below ground level, with a column 1 vertically fixed to the top of the fixed base 5. One end of an arm 2 is connected to the upper portion of the column 1, and the middle section of the arm 2 is connected to the signboard 3 via a bearing-type rotatable mounting structure 4. This bearing-type rotatable mounting structure 4 has a rotation axis 7 extending along the centerline of the arm 2. This rotation axis 7 forms an angle of 0° with the extension direction of the arm 2 and is located at the connection between the bearing-type signboard 3 and the arm 2. This bearing-type rotatable mounting structure 4 allows the signboard 3 to rotate about the rotation axis 7 (including 360-degree rotation), allowing the signboard 3 to adjust its windward angle in strong winds, thereby reducing wind resistance by reducing its windward area.

[0025] It is worth mentioning that, as shown in FIG5 , a typical road sign in the prior art requires at least two arms 2 to stabilize a sign surface 3, while the present application Figure 1 The card face 3 shown only requires one arm 2 to connect the card face 3, which saves 50% of the cost of the arm 2.

[0026] Example 2.

[0027] As shown in Figure 2, the difference between this embodiment and the first embodiment is that the road sign includes two columns 1, which are arranged in parallel and the bottoms of both columns are connected to the fixed base 5. The two ends of the arm 2 are respectively connected to the upper parts of the two columns 1, and the sign face 3 is connected to the arm 2 through a bearing-type rotatable mounting structure 4.

[0028] The rotation axis 7 of the bearing-type rotatable mounting structure 4 coincides with the center line of the arm 2, and the board 3 can swing around the axis (for example, relative to the arm 2), thereby reducing resistance by adjusting the windward angle under strong winds.

[0029] Example 3.

[0030] As shown in Figure 3, a swaying wind-resistant road sign includes a fixed base 5, two 300mm diameter PHC pipe piles (as columns 1), five arms 2, four signboards 3, four pairs of permanent magnet overload release devices 6 and eight sets of hanging slip ring rotatable mounting structures 4.

[0031] The column 1 is vertically fixed to the fixed base 5, the arm 2 is connected to the column 1 to form a support frame, and the card face 3 is suspended below the arm 2 through a hanging slip ring type rotatable mounting structure 4; the rotation axis 7 of the hanging slip ring type rotatable mounting structure 4 coincides with the center line of the arm 2, allowing the card face 3 to swing around this axis.

[0032] A pair of permanent magnet overload release devices 6 are installed between each card face 3 and its corresponding arm 2. One magnet is fixed to the bottom of the card face 3, and the other is fixed to the top of the arm 2. Under normal conditions, the magnetic attraction of the two magnets keeps the card face 3 stationary. When the wind force reaches a set threshold (i.e., the wind force acting on the card face 3 exceeds the magnetic attraction), the card face 3 breaks free from the magnetic attraction and swings around the rotation axis 7 to adjust its angle into the wind, reducing wind resistance.

[0033] The magnetic attraction of the limiting permanent magnet can be selected according to the local wind force level, such as 5kg, 10kg, 15kg or 50kg.

[0034] Comparative experiments show that when the size of the signboard 3 is 1.25m×2.5m, the existing road signs (such as Figure 4 As shown in Figure 1), under a 12-level typhoon environment, the column 1 needs to use a 500mm diameter PHC pipe pile (the unit price is RMB 230 / m for labor and materials); and the road sign using the technical solution of this application (such as Figure 3 As shown in the figure, under the same wind conditions, the column 1 only needs PHC piles with a diameter of 300 mm (the unit price is 105 yuan / m for labor and materials), and the cost of the column 1 and the fixed base 5 is reduced by about 54%, which is significantly economical.

[0035] The above description is only a preferred embodiment of the present application, and the accompanying drawings are schematic structural diagrams and are not drawn to scale. All equivalent changes made based on the claims of this application fall within the scope of protection of this application.

Claims

1. A swinging wind-resistant road sign, comprising a fixed base, a column, an arm and a sign, characterized in that: The card face is connected to the arm through a rotatable mounting structure, and the rotatable mounting structure is provided with a rotation axis extending along a preset direction, and the rotation axis is arranged at the connection part between the arm and the card face; the rotatable mounting structure is configured to allow the card face to rotate around the rotation axis, so that the card face can swing with the wind under the action of strong wind to adjust its own windward angle, thereby reducing the windward area to achieve resistance reduction.

2. The swaying wind-resistant road sign according to claim 1, characterized in that: The rotation axis coincides with the center line of the arm, so that the card face can rotate around the center line of the arm.

3. The swaying wind-resistant road sign according to claim 1, characterized in that: The rotatable mounting structure is selected from one of a bearing mounting structure, a hanging slip ring mounting structure or a hinge mounting structure.

4. The swaying wind-resistant road sign according to claim 1 or 2, characterized in that: The card face is also connected to an overload release device, which includes but is not limited to a limiting permanent magnet; when the wind force is small, the limiting permanent magnet holds the card face through magnetic attraction to keep the card face still; when the wind is strong, the wind force applied to the card face is greater than the magnetic attraction force, so that the card face breaks free from the magnetic attraction limit and swings with the wind.

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