Wind-resistant device for pavement construction

Abstract

The invention discloses a wind-resistant device for pavement construction, which comprises a support frame, a wind shield assembled on the support frame and a counter weight for weight increment, the wind shield comprises a rectangular part and a triangular part arranged on one side of the rectangular part, the triangular part corresponds to the windward side of the wind shield, and when the support frame is limited on a pavement, the triangular part is arranged on the windward side of the wind shield. And the triangular part guides and shunts the wind blown to the wind shield to reduce the wind speed behind the wind shield, so that the wind speed of a pavement construction area can be effectively reduced, a relatively stable low-wind environment is created in the construction area, and smooth construction is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction, and particularly relates to a wind-resistant device for pavement construction. Background Art

[0002] When constructing airport pavements in areas frequently affected by strong winds, the strong winds will accelerate the evaporation of moisture on the concrete surface, causing the concrete to lose water too quickly at its early age, giving rise to plastic shrinkage cracks, and affecting the appearance, durability and load-bearing capacity. At the same time, the wind disturbance makes the concrete pouring and vibration uneven, resulting in poor compactness and threatening the strength and stability of the pavement. Moreover, in a strong wind environment, the safety of equipment and personnel is difficult to guarantee, and construction often needs to be suspended. Therefore, the construction progress is forced to be delayed.

[0003] In addition, strong winds also cause economic losses. The costs of crack repair and rework increase, and the costs of suspension and additional maintenance also drive up the construction cost, affecting economic benefits. At the same time, strong winds also blow away dust particles, polluting the surrounding environment, and the waste generated by the early-age damage of concrete adds to the environmental burden. Summary of the Invention

[0004] Therefore, to solve the above problems, the present invention provides a wind-resistant device for pavement construction, which can effectively reduce the wind speed in the pavement construction area, create a relatively stable low-wind environment in the construction area, and thus ensure the smooth progress of construction.

[0005] To achieve the above object, the technical solution provided by the present invention is as follows:

[0006] The present invention provides a wind-resistant device for pavement construction, including a support frame, a wind shield assembled on the support frame, and a counterweight for adding weight; the wind shield includes a rectangular part and a triangular part provided on one side of the rectangular part, and the triangular part corresponds to the windward side of the wind shield; when the support frame is restricted to the pavement, the triangular part guides and diverts the wind blowing towards the wind shield to reduce the wind speed behind the wind shield.

[0007] Further, the cross-section of the triangular part is an isosceles triangle.

[0008] Further, the external dimensions of the wind shield satisfy the following conditions: Wherein, A is the length of the waist side of the triangular part, B is the length of the side of the rectangular part perpendicular to the windward surface, and C is the length of the side of the rectangular part parallel to the windward surface.

[0009] Further, the wind shield includes a rigid frame and a panel provided on the outer surface of the frame.

[0010] Furthermore, the windshield is a hollow structure; an opening for the counterweight to enter and exit is provided on a side of the rectangular portion away from the triangular portion.

[0011] Furthermore, the bottom of the counterweight is equipped with a first running wheel, and the first running wheel is equipped with a brake; the counterweight is arranged on the side of the support frame; or the counterweight is arranged on the top of the support frame; or the counterweight is connected to the support frame through a tension rope; or the counterweight is connected to the windshield through a tension rope.

[0012] Furthermore, the counterweight is a counterweight water tank.

[0013] Furthermore, the support frame includes a transverse frame and vertical frames fixed at opposite ends of the transverse frame respectively, the bottom of the vertical frame is equipped with a second running wheel, and the second running wheel is equipped with a brake component; the transverse frame is suspended.

[0014] The technical solution provided by the present invention has the following beneficial effects:

[0015] The present invention has wind reduction efficiency. A triangular portion is provided on the windward side of the windshield. After being guided by the windshield, the strong wind flow flows to the rear of the windshield. At this time, its energy has been effectively dispersed or diverted, and its flow rate is also reduced accordingly, ultimately achieving a significant reduction in wind force behind the windshield. This can reduce construction wind speed and alleviate the adverse effects of wind on concrete construction. It also creates a relatively stable low-wind environment for pavement construction areas affected by strong winds, such as coastal airports, to ensure the smooth progress of construction, and effectively avoids work stoppages caused by strong winds of level 5-8, thereby reducing work delay costs, ensuring construction continuity, improving project quality, and further reducing economic losses caused by construction interruptions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG2 is a schematic diagram showing the operating state of a wind-resistant device used for pavement construction in an embodiment;

[0017] Figure 2 Shown is a first perspective schematic diagram of the windshield in the embodiment;

[0018] Figure 3 Shown is a second perspective schematic diagram of the windshield in the embodiment;

[0019] Figure 4 Shown is a schematic diagram of a support frame in an embodiment. DETAILED DESCRIPTION

[0020] To further illustrate each embodiment, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0022] Refer to Figures 1 to 4 As shown, this embodiment provides a wind resistance device for pavement construction (hereinafter simply referred to as the wind resistance device) for wind resistance and diversion during the concrete pavement construction of coastal airports under strong wind conditions.

[0023] As Figure 1 shown, the wind resistance device of this embodiment includes a support frame 1, a wind shield 2 assembled on the support frame 1, and a counterweight 3 for adding weight.

[0024] As Figure 1 and Figure 3 shown, the wind shield 2 includes a rectangular part 21 and a triangular part 22 arranged on the front side of the rectangular part 21. The triangular part 22 corresponds to the windward side of the wind shield 2.

[0025] When the support frame 1 is restricted to the pavement, the triangular part 22 guides and diverts the wind or air flow 6 blowing towards the wind shield 2 to reduce the wind speed in the pavement construction area 5 behind the wind shield 2.

[0026] In this embodiment, as Figure 4 shown, the support frame 1 includes a transverse frame 11 and vertical supports 12 respectively fixed at the left and right opposite ends of the transverse frame 11. The bottoms of the two vertical supports 12 are respectively equipped with second walking wheels 121. The two vertical supports 12 are used to support the transverse frame 11 so that the transverse frame 11 is suspended, that is, there is a certain height interval between the transverse frame 11 and the pavement. This height interval is used for the airport pavement construction below it. Of course, a reinforcing rib is also provided between the transverse frame 11 and the vertical support 12 to improve the connection strength between them.

[0027] After the road construction in the previous pavement construction area 5 is completed, through the second walking wheels 121, the wind resistance device of this embodiment moves backward along the road trajectory for the next construction process. The two vertical supports 12 respectively walk on the opposite sides of the road, and at the same time the transverse frame 11 is located above the road, so there will be no interference.

[0028] As Figure 1As shown, the bottom of the counterweight 3 is equipped with a first running wheel 31, and the counterweight 3 is arranged on the left and right sides of the support frame 1. The counterweight 3 is connected to the windshield 2 through a tension rope 4. Of course, in other embodiments, the counterweight 3 can also be connected to the support frame 1 through a tension rope 4.

[0029] More specifically, the first running wheel 31 and the second running wheel 121 are both equipped with brake components to ensure that the support frame 1 and the counterweight 3 can remain stationary after the brake components are opened, thereby ensuring the stability of the entire wind-resistant device.

[0030] The wind-resistant device of this embodiment has wind reduction efficiency. A triangular portion 22 is provided on the windward side of the windshield 2. After being guided by the triangular portion 22 of the windshield 2, the strong wind airflow 6 flows to the rear of the rectangular portion 21 of the windshield 2. At this time, its energy has been effectively dispersed or diverted, and its flow rate is also reduced accordingly, and finally the wind force behind the windshield 2 is significantly reduced. In this way, the construction wind speed can be reduced and the adverse effect of wind force on concrete construction can be reduced. A relatively stable low-wind environment can also be created for pavement construction areas 5 affected by strong winds, such as coastal airports, to ensure the smooth progress of construction, and effectively avoid work stoppages caused by strong winds of level 5-8, thereby reducing work delay costs, ensuring the continuity of construction, improving project quality, and further reducing economic losses caused by construction interruptions.

[0031] In addition, the wind-resistant device of this embodiment also takes into account economy. Its simple structure can reduce manufacturing costs and increase service life. It is also easy to install or disassemble, and can also improve work efficiency to achieve a cost-effective construction method and adapt to various construction scenarios.

[0032] In another preferred embodiment, Figure 3 As shown, the cross section of the triangular portion 22 is an isosceles triangle, the base of the triangular portion 22 coincides with the side length of the rectangular portion 21, and the outer dimensions of the windshield 2 meet the following conditions:

[0033] Conditional expression (1):

[0034] Conditional expression (2):

[0035] Wherein, A is the length of the waist side A' of the triangular portion 22, B is the length of the side B' of the rectangular portion 21 perpendicular to the windward surface, and C is the length of the side C' of the rectangular portion 21 parallel to the windward surface.

[0036] In conditional formula (1), when the windshield 2 faces the wind, it can reasonably guide and divide the airflow 6. That is, when strong wind impacts the front end or the windward end of the windshield 2, it causes the airflow 6 to flow smoothly along the side of the windshield 2, avoiding the disorderly accumulation of the airflow 6, thereby reducing the direct impact on the rear pavement construction area 5 of the windshield 2, and further reducing the wind force and wind speed in the rear pavement construction area 5.

[0037] In conditional formula (2), the side length C’ and the waist side A’ cooperate to form a suitable inclination angle. When strong wind blows from the front end, conditional formula (2) enables the windshield 2 to precisely cut and guide the airflow 6, changing the original flow direction and flow velocity distribution of the airflow 6. In this way, after the airflow 6 is guided by the front end of the windshield 2, the energy of the airflow 6 when it reaches the rear pavement construction area 5 behind it has been effectively dispersed, and its flow velocity has also decreased. Finally, the wind force in the rear pavement construction area 5 behind the windshield 2 is significantly reduced, creating a relatively stable low-wind environment for the pavement construction area 5 of the coastal airport runway and ensuring the smooth progress of the construction.

[0038] In addition, the height H of the windshield 2 satisfies conditional formula (3): To ensure that the rear pavement construction area 5 of the windshield 2 can create a relatively stable low-wind environment, while avoiding the windshield 2 from having too large an area.

[0039] And through finite element analysis, it can be known that the distance from the middle section of the flow field of the airflow 6 to the ground is 1.175 m. Through the windshield 2, a low-wind area with a significantly reduced wind speed can be formed behind the windshield 2.

[0040] More specifically, as Figure 2 shown, the windshield 2 includes a rigid frame 23 and a panel 24 arranged on the outer surface of the frame 23. Specifically, the frame 23 is a steel frame. At this time, the windshield 2 is a hollow structure, which can reduce the overall weight while ensuring the strength of the windshield 2, and an opening 211 for the entry and exit of the counterweight 3 is provided on the rear side of the rectangular portion 21 away from the triangular portion 22. Of course, in other embodiments, the frame 23 can also be made of metal materials such as aluminum alloy or other ferroalloys.

[0041] In this specific embodiment, multiple groups of counterweights 3 are respectively arranged on the road surfaces on the left and right sides of the support frame 1, and then the counterweights 3, the relatively light support frame 1, and the windshield 2 are connected into one body through the tension ropes 4. In this way, there is no need to place the relatively heavy counterweights 3 on the upper surface of the support frame 1 to prevent the support frame 1 with a large span from deforming due to excessive load.

[0042] Specifically, the counterweight 3 is a counterweight water tank, and the water can be drained during transportation to reduce the weight, thereby facilitating transportation. At the same time, the bottom of the counterweight 3 is equipped with first walking wheels 31, which also facilitates its movement.

[0043] Certainly, in other embodiments, when the span of the support frame 1 is relatively small, the counterweight 3 can also be placed on the upper surface of the support frame 1.

[0044] The counterweight 3 can also be replaced by heavy objects such as lead blocks.

[0045] In addition, a lifting ring can also be provided on the upper part of the wind shield 2 and used in cooperation with an external crane through the lifting ring, so as to hoist the counterweight 3 onto the upper surface of the support frame 1 or place it in the inner cavity of the wind shield 2.

[0046] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them fall within the protection scope of the present invention.

Claims

1. An anti-wind device for pavement construction, characterized in that: It comprises a support frame, a windshield mounted on the support frame, and a counterweight for increasing weight; The windshield includes a rectangular portion and a triangular portion provided on one side of the rectangular portion, wherein the triangular portion corresponds to the windward side of the windshield; When the support frame is restricted to the road surface, the triangular portion guides and diverts the wind blowing toward the windshield to reduce the wind speed behind the windshield.

2. The wind-resistant device for pavement construction according to claim 1, characterized in that: The cross section of the triangular portion is an isosceles triangle.

3. The wind-resistant device for pavement construction according to claim 2, characterized in that: The outer dimensions of the windshield meet the following conditions: Among them, A is the waist length of the triangular part, B is the side length of the rectangular part perpendicular to the windward surface, and C is the side length of the rectangular part parallel to the windward surface.

4. The wind-resistant device for pavement construction according to any one of claims 1-3, characterized in that: The windshield comprises a rigid frame and a panel arranged on the outer surface of the frame.

5. The wind-resistant device for pavement construction according to claim 4, characterized in that: The windshield is a hollow structure; an opening for the counterweight to enter and exit is provided on a side of the rectangular portion away from the triangular portion.

6. The wind-resistant device for pavement construction according to any one of claims 1-3, characterized in that: The bottom of the counterweight is equipped with a first running wheel, and the first running wheel is equipped with a brake; the counterweight is arranged on the side of the support frame; or the counterweight is arranged on the top of the support frame; or the counterweight is connected to the support frame through a tension rope; or the counterweight is connected to the windshield through a tension rope.

7. The wind-resistant device for pavement construction according to any one of claims 1-3, characterized in that: The counterweight object is a counterweight water tank.

8. The wind-resistant device for pavement construction according to any one of claims 1-3, characterized in that: The support frame includes a transverse frame and vertical frames respectively fixed at opposite ends of the transverse frame. The bottom of the vertical frame is equipped with a second running wheel, and the second running wheel is equipped with a brake component. The transverse frame is suspended.

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