Sand prevention device for construction site

Abstract

The utility model belongs to the technical field of construction site sand prevention, and particularly relates to a construction site sand prevention device which comprises a bottom plate, two baffles are symmetrically distributed and fixedly connected to the two ends of the upper side of the bottom plate, the two baffles are erected in a trapezoid shape, a vertical frame is fixedly connected to the position, between the two baffles, of the upper side of the bottom plate, and a filter screen frame is fixedly connected to the top of the vertical frame. A filter screen frame is arranged on the baffle, a gap is reserved between the outward extending part of the filter screen frame and the top of the baffle, and a filter screen with fine and dense meshes is fixedly connected to the position, corresponding to the top of the baffle, of the filter screen frame. Bending deformation caused by the fact that the baffles bear too large pressure when wind power is large is avoided, the service life of the sand prevention device is prolonged, sandy soil wrapped in the wind is intercepted through the filter screen frame and the filter screen, the sandy soil falls into the space between the baffles and is gradually accumulated, and the firmness and stability of the sand prevention device are further improved through the intercepted and collected sandy soil.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand prevention in construction sites, and particularly relates to a sand prevention device for construction sites. Background Technique

[0002] In construction sites, dusty weather is a very common problem. Especially in the northwestern regions of our country, the windy and sandy weather is severe and frequent, which not only affects the construction progress and quality, but also poses a certain threat to the physical health of workers. Therefore, how to effectively prevent the intrusion of dust has become one of the urgent problems to be solved in the construction industry.

[0003] Traditional sand prevention measures mainly reduce the entry of dust in the air by building enclosures made of materials such as canvas or plastic film around the construction site. The intercepted sand and soil accumulate under the canvas or plastic film. When the wind blows again, it will carry the intercepted and accumulated sand and soil, causing the problem of secondary dust emission.

[0004] The Chinese patent with the authorization announcement number CN220319172U discloses a sand prevention device for construction sites, including a water channel and a baffle. The baffle is inserted and installed on the upper part of the inner wall of one side of the water channel. A transmission flow channel is arranged inside the water channel. The baffle includes a plate body, and a transmission hole is arranged inside the plate body. An inlet is arranged inside the water channel, and the inlet communicates with the transmission hole; the water channel includes a concave plate, a fixing plate and a screw. There are two fixing plates, and the two fixing plates are respectively fixed on both sides of the concave plate. A number of screws are respectively screwed inside the two fixing plates. By adopting the method of installing the baffle, the dust is blocked. The accumulated water in the construction site is transmitted through the water channel, and at the same time, the dust blocked by the baffle is collected. The water channel includes a concave plate, which can effectively block the dust directly blown by the strong wind inside the concave plate. At the same time, water is passed inside the concave plate to adsorb the dust, effectively avoiding the secondary blowing of the dust.

[0005] However, the following problems still exist in the comparative document:

[0006] In the comparative document, by semi-burying the concave plate into the ground, while the concave plate serves as a drainage channel, the sand and soil intercepted by the baffle are collected and transported to avoid secondary dust emission when the wind blows again. However, in actual use scenarios, in areas and seasons with frequent windy and sandy weather, the precipitation is often not large. Then, it is difficult to achieve the effect of avoiding secondary dust emission only through the daily drainage volume in the project.

[0007] The baffle adopted in the comparative document is made of an integral plastic material. When encountering strong winds, the baffle directly faces the wind and receives a large pressure, and is prone to problems such as bending deformation or even breakage, which is not conducive to long-term erection and use. Content of the Utility Model

[0008] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the present utility model is that by providing baffles erected in a trapezoidal shape, the compressive strength of the baffles can be effectively improved, avoiding bending deformation of the baffles due to excessive pressure when the wind force is large, and improving the service life of the sand prevention device. By using the filter screen frame and the filter screen, the sand carried by the wind is intercepted, and the sand falls between the two baffles and gradually accumulates. Then, the intercepted and collected sand is used to further improve the firmness and stability of the sand prevention device. By providing a shielding baffle, when it is expected, the gap between the two baffles and the filter screen frame can be shielded, preventing rainwater from entering the device and forming water accumulation inside the device.

[0009] In order to achieve the above object, the present utility model provides the following technical solution: A sand prevention device for a construction site, including a bottom plate. At both ends of the upper side of the bottom plate, two baffles are symmetrically and fixedly connected. The two baffles are erected in a trapezoidal shape. A vertical frame is fixedly connected at the position between the two baffles on the upper side of the bottom plate. The top of the vertical frame is fixedly connected with a filter screen frame. There is a gap between the extended part of the filter screen frame and the top of the baffle. A filter screen with fine mesh holes is fixedly connected to the filter screen frame at the corresponding position of the top of the baffle.

[0010] A closing plate is slidably connected to the bottom of each baffle.

[0011] A plurality of inclined first support rods are fixedly connected between the bottom plate and each baffle. A plurality of inclined second support rods are fixedly connected between the vertical frame and each baffle. Two side plates are fixedly connected to both sides of the two baffles respectively.

[0012] Two groups of rotating seats are symmetrically and fixedly connected to the top of the filter screen frame. Two symmetrically arranged shielding baffles are respectively rotatably connected to the two groups of rotating seats. A group of limiting rods are fixedly connected to both ends of each shielding baffle. The bottom of each limiting rod is bent inward.

[0013] In summary, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) By providing baffles erected in a trapezoidal shape, the compressive strength of the baffles can be effectively improved, avoiding bending deformation of the baffles due to excessive pressure when the wind force is large, and improving the service life of the sand prevention device.

[0015] (2) By using the filter screen frame and the filter screen, the sand carried by the wind is intercepted, and the sand falls between the two baffles and gradually accumulates. While achieving the effect of avoiding secondary dust emission, the intercepted and collected sand can be used to further improve the firmness and stability of the sand prevention device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 This is the front elevation view of the whole utility model;

[0018] Figure 3 This is the schematic cross-sectional structure view at A-A of the utility model;

[0019] Figure 4 This is the exploded view of some parts of the utility model;

[0020] Figure 5 This is the enlarged structure view of B of the utility model; Specific implementation manners

[0021] In order to enable the personnel in the technical field to better understand the solution of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model.

[0022] Refer to Figure 1-5 , a sand prevention device for construction sites, including a bottom plate 33. At both ends of the upper side of the bottom plate 33, two baffles 35 are symmetrically and fixedly connected. The two baffles 35 are erected in a trapezoidal shape.

[0023] By arranging the baffles 35 erected in a trapezoidal shape, the compressive strength of the baffles 35 can be effectively improved, avoiding the bending deformation of the baffles 35 due to excessive pressure when the wind force is large, and improving the service life of the sand prevention device.

[0024] Refer to Figure 1 , 4 , on the upper side of the bottom plate 33 between the two baffles 35, a vertical frame 37 is fixedly connected. At the top of the vertical frame 37, a filter screen frame 38 is fixedly connected. There is a gap between the extended part of the filter screen frame 38 and the top of the baffle 35. At the corresponding position of the top of the baffle 35 on the filter screen frame 38, a filter screen 44 with fine mesh holes is fixedly connected. A closing plate 36 is slidably connected to the bottom of each baffle 35.

[0025] By using the filter screen frame 38 and the filter screen 44, the sand carried by the wind is intercepted, and the sand falls between the baffles 35 and gradually accumulates. Then, the intercepted and collected sand is used to further improve the firmness and stability of the sand prevention device.

[0026] Refer to Figure 1 , 3 , between the bottom plate 33 and each baffle 35, a plurality of inclined first support rods 42 are fixedly connected. Between the vertical frame 37 and each baffle 35, a plurality of inclined second support rods 43 are fixedly connected. Two side plates 34 are fixedly connected to both sides of the two baffles 35 respectively.

[0027] By arranging the first support rods 42 and the second support rods 43, the structural strength of the device is effectively improved, and the service life of the sand prevention device is further improved.

[0028] refer to Figure 5 Two sets of rotating seats 39 are symmetrically distributed and fixedly connected to the top of the filter frame 38. Two sets of rotating seats 39 are rotatably connected to two mutually symmetrical baffles 40. Each baffle 40 is fixedly connected to a set of limiting rods 41 at both ends, and the bottom of each limiting rod 41 is bent inward.

[0029] By providing the shielding plate 40 , the gap between the two baffles 35 and the filter frame 38 can be shielded when expected, thereby preventing rainwater from entering the device and forming water accumulation inside the device.

[0030] In this embodiment, initially, workers place multiple sand-proof devices side by side in a designated area, ensuring that each sand-proof device is tightly against each other, and then use bolts to firmly fix the bottom plate 33 to the ground, thereby firmly fixing all the sand-proof devices.

[0031] When the wind carries sand and blows the baffle 35, the baffle 35 blocks the wind and sand. Since the baffle 35 is arranged in a trapezoidal shape and is supported by the first support rod 42 and the second support rod 43 inside the device, the overall structural strength of the sand-proof device is high, avoiding the problem of the baffle 35 being compressed, bent, deformed or even broken due to excessive wind force, thereby improving the service life of the sand-proof device.

[0032] At the same time, the wind flows upward along the inclined surface of the baffle 35, and the sand moves upward along with it. The upward airflow is guided through the filter screen 44, and the sand is intercepted by the filter screen 44 and finally falls between the two baffles 35 and enters the device for collection and accumulation. The sand accumulated in the device is used as a counterweight to improve the firmness and stability of the sand-proof device.

[0033] In addition, when the wind passes through the filter 44, the wind will act on the bottom side of the filter frame 38 to make the shielding plate 40 tilt up, thereby not affecting the wind passing through the filter 44. Due to the limiting rod 41, the shielding plate 40 will not overturn too much. After the wind stops, under the action of gravity, the shielding plate 40 automatically falls down to cover the filter 44. Then, in rainy weather, the filter 44 and the filter frame 38 cover the gap between the two baffles 35 and the filter frame 38, thereby preventing rainwater from entering the device and causing water accumulation.

[0034] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not distinguish components by the difference in names, but by the difference in functions of the components. As used throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "comprising but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0035] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a commodity or system including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the said element.

[0036] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A sand prevention device for construction sites, characterized in that, It includes a bottom plate (33). At both ends of the upper side of the bottom plate (33), two baffles (35) are symmetrically and fixedly connected. The two baffles (35) are erected in a trapezoidal shape. A vertical frame (37) is fixedly connected at the position between the two baffles (35) on the upper side of the bottom plate (33). A filter screen frame (38) is fixedly connected to the top of the vertical frame (37). There is a gap between the part of the filter screen frame (38) extending outwards and the top of the baffle (35). A filter screen (44) with fine mesh holes is fixedly connected to the filter screen frame (38) at the position corresponding to the top of the baffle (35).

2. The anti-sand device for a construction site according to claim 1, wherein, A closing plate (36) is slidably connected to the bottom of each baffle (35).

3. The anti-sand device for construction sites according to claim 1, characterized in that, A plurality of inclined first support rods (42) are fixedly connected between the bottom plate (33) and each baffle (35).

4. A sand prevention device for construction sites according to claim 1, characterized in that, A plurality of inclined second support rods (43) are fixedly connected between the vertical frame (37) and each baffle (35).

5. The anti-sand device for construction sites according to claim 1, wherein Two side plates (34) are fixedly connected to both sides of the two baffles (35) respectively.

6. The sand prevention device for a construction site according to claim 1, wherein, Two groups of rotating seats (39) are symmetrically and fixedly connected to the top of the filter screen frame (38). Two symmetrically arranged shielding plates (40) are respectively rotatably connected to the two groups of rotating seats (39). A group of limiting rods (41) are fixedly connected to both ends of each shielding plate (40). The bottom of each limiting rod (41) is bent inwards.

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