Adjustable sand blocking wall

Abstract

The utility model discloses an adjustable sand blocking wall which comprises a middle sand blocking wall body, and the upper portion and the lower portion of the middle sand blocking wall body are movably connected with an upper adjustable sand blocking wall body and a lower adjustable sand blocking wall body respectively. The two adjustable stand columns are vertically arranged side by side, and the two connected adjustable stand columns are connected with the sand blocking wall through rotating shaft connecting pieces. The middle sand blocking wall is a perforated plate; the upper adjustable sand blocking wall and the lower adjustable sand blocking wall are basically the same in structure; the upper adjustable sand blocking wall comprises a plurality of sand guiding plates from top to bottom, and the sand guiding plates are the first sand guiding plate, the second sand guiding plate and the third sand guiding plate in sequence. The lower adjustable sand blocking wall comprises a plurality of sand guiding plates from top to bottom, and the sand guiding plates are the fourth sand guiding plate, the fifth sand guiding plate and the sixth sand guiding plate in sequence. During use, a bottom reserved layer is arranged between the lower adjustable sand blocking wall and the ground. The sand blocking wall can effectively adapt to various wind speeds, sand damage of transverse wind to the high-speed rail is prevented, the method is suitable for various complex working environments such as strong wind and gobi, the requirement for sand prevention in engineering construction can be met, and high construction efficiency, high prevention and control benefits and long service life are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind and sand protection, and specifically relates to an adjustable sand retaining wall. Background Art

[0002] With the rapid development of economic construction in western my country, infrastructure projects such as railways, roads and urban development have been widely carried out in the desert and Gobi areas of northwest my country. At the same time, the harm of wind and sand to railways and roads is becoming more and more serious. If corresponding protective measures are not taken in time, it will not only cause huge damage to infrastructure such as railways and roads, but also pose a threat to the normal operation of infrastructure.

[0003] The engineering sand-blocking measures in the prior art mainly include sand-fixing measures and sand-blocking measures. Sand-blocking measures are widely used, including concrete sleeper sand-blocking walls, PE net high vertical sand barriers, reed sand-blocking fences, etc. At present, in the construction of sand-blocking projects such as railways and highways, although certain results have been achieved, there are still problems such as high construction difficulty, high cost, and poor control effect. Especially in areas with more serious wind and sand disasters, the current sand-blocking measures are not effective and the maintenance costs are high. Summary of the invention

[0004] The utility model aims to provide an adjustable sand retaining wall which can adjust direction and height according to wind speed, can reduce the disturbance of lateral wind and can reduce the deposition of track sand.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: the column is provided with a plurality of rotating shaft connecting pieces in sequence from top to bottom, and two adjacent connecting pieces on the left and right are connected to a sand guide plate. The side wall of the upper sleeve is provided with a plurality of transverse through holes, and the six sand guide plates are connected to the upper sleeve through the rotating shaft connecting pieces. When in use, the sand guide plates can rotate around the axis and automatically adjust the angle according to the wind direction and wind speed.

[0006] The adjustable sand retaining wall of the utility model can effectively adapt to various wind speeds and prevent sand damage to high-speed railways caused by lateral winds. The method is suitable for various complex working environments such as strong winds and Gobi deserts, and can meet the requirements for sand prevention in engineering construction. It has high construction efficiency, low cost, low maintenance cost, high prevention and control benefits and long service life, and can be promoted on a large area. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the adjustable sand retaining wall of the utility model.

[0008] Figure 2 The utility model is a structural schematic diagram of a sleeve telescopic column in an adjustable sand retaining wall.

[0009] Figure 3 yes Figure 1 A top view of the adjustable sand retaining wall shown. DETAILED DESCRIPTION

[0010] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0011] like Figure 1 As shown, the utility model of the adjustable sand retaining wall sand barrier includes a middle sand retaining wall 4, which is movably connected to an upper adjustable sand retaining wall 10 and a lower adjustable sand retaining wall 11 at the upper and lower parts; two adjustable columns 9 are vertically arranged side by side, and the two connected adjustable columns 9 are connected to the sand retaining wall through a rotating shaft connector 15.

[0012] The structures of the upper adjustable sand retaining wall 10 and the lower adjustable sand retaining wall 11 are basically the same; the upper adjustable sand retaining wall 10 includes a plurality of sand guide plates from top to bottom, which are the first sand guide plate 1, the second sand guide plate 2 and the third sand guide plate 3 in sequence; the lower adjustable sand retaining wall 11 includes a plurality of sand guide plates from top to bottom, which are the fourth sand guide plate 5, the fifth sand guide plate 6 and the sixth sand guide plate 7 in sequence. When in use, there is a bottom reserved layer 8 between the lower adjustable sand retaining wall 11 and the ground, and the height of the first sand guide plate 1, the height of the second sand guide plate 2, the height of the third sand guide plate 3, the height of the fourth sand guide plate 5, the height of the fifth sand guide plate 6 and the height of the sixth sand guide plate 7 are the same. When in use, there is a bottom reserved layer 8 between the lower adjustable sand retaining wall 11 and the ground.

[0013] like Figure 2 As shown, the columns 9 in the adjustable sand retaining wall of the utility model are provided with a plurality of rotating shaft connectors 15 in sequence from top to bottom, and two adjacent connectors 15 on the left and right are connected to a sand guide plate. There are six through holes running transversely through the side wall of the upper sleeve 12, and the six sand guide plates are connected to the upper sleeve through the rotating shaft connectors 15. When in use, the sand guide plates can rotate around the axis and automatically adjust the angle according to the wind direction and wind speed.

[0014] The adjustable column 9 includes an upper sleeve 12, a middle sleeve 13 and a lower sleeve 14. The outer diameter of the middle sleeve 13 is adapted to the inner diameter of the lower sleeve 14, and the outer diameter of the upper sleeve 12 is adapted to the inner diameter of the middle sleeve 13. There are transverse through holes on the side walls of the lower sleeve 14, the middle sleeve 13 and the upper sleeve 12, and the three sleeves are connected by bolt connectors 16. When in use, the middle sleeve 13 is inserted into the lower sleeve 14, and the upper sleeve 12 can be inserted into the middle sleeve 13 to achieve high telescopic height.

[0015] The middle sand retaining wall 4 is made of metal plastic coated mesh, which has the advantages of strong durability, high strength, low cost, etc. Its porosity can be determined according to the local wind and sand flow characteristics, and a low porosity sand retaining mesh with a porosity of 20% to 30% can also be selected.

[0016] The sand retaining wall in the utility model's adjustable sand retaining wall is mainly composed of two adjustable columns, a perforated plate and six sand guide plates. When the wind and sand flow contacts the sand barrier at an angle, three situations will occur: first, after contacting the sand guide plate, due to the influence of the rebound force, it is bounced back to the focus of the parabola or around it, continues to move forward, and leaves the sand barrier; the second reason is that due to the action of the upper adjustable retaining wall, the wind and sand flow moves upward and finally converges at the apex of the parabola; the third aspect is that under the action of the bottom adjustable retaining wall, the sand particles move forward rapidly along the surface. Under the joint action of the above two forms, the sand guide wall guides the wind and sand flow to a predetermined position and removes it in a centralized manner.

[0017] The main function of the bottom reserved layer 8 is to quickly transport the accumulated sand deposited near the sand retaining wall away from the vicinity of the sand retaining wall, extend the life of the retaining wall, and reduce maintenance costs. The bottom reserved layer 8 can be designed to be 20 to 30 cm in height, and can also be determined according to specific conditions. The bottom reserved layer 8 is designed based on the "canyon wind effect" in the aerodynamic principle. When the wind and sand flow passes through the sand retaining wall, an acceleration zone will be generated at the bottom reserved layer 8 of the sand retaining wall, and the silt accumulated at the bottom of the retaining wall will be transported to the low wind speed area behind the obstacle. This design is beneficial to operation and maintenance, and prevents excessive sand accumulation, which will lead to a decrease in the sand interception effect of the sand retaining wall and an increase in maintenance costs.

[0018] The wind and sand flow near the surface moves along the upper adjustable retaining wall to the apex of the parabola, which will not cause erosion to the root of the sand retaining wall, and can increase the service life of the retaining wall. The wind and sand flow at the top sinks along the parabola surface to the apex of the parabola, merges with the wind and sand flow at the bottom, forms a vortex and moves forward in the direction away from the sand retaining wall, and will not form the phenomenon of wind and sand flow crossing the sand barrier. When the wind and sand flow encounters the sand retaining wall, according to the principles of aerodynamics, when the wind speed is fast, the wind and sand cannot pass through the sand retaining wall quickly. At this time, the sand retaining wall is equivalent to a rigid structure, which makes the wind and sand flow quickly climb up and move downward, and form a vortex after the sand is blocked, so that the wind and sand flow structure changes, plays a role in blocking sand, and causes sand particles to deposit.

[0019] The adjustable sand retaining wall of the utility model can adjust the direction of the sand guide plate according to the wind speed, and the height can be adjusted by a telescopic rod, which can not only prevent sand damage in the crosswind direction, but also effectively reduce the sand deposition on the line, and effectively improve the sand retaining effect of the sand retaining wall. The lower adjustable sand retaining wall can effectively remove the accumulated sand near the sand retaining wall, increase the service life of the sand retaining wall, and reduce the maintenance cost. During the installation process, it can be installed in an assembly manner, which is convenient for transportation and improves the construction efficiency. It has the characteristics of convenient construction, low cost, high sand prevention effect, and low maintenance cost.

Claims

1. An adjustable sand retaining wall, characterized in that: The invention comprises a middle sand retaining wall (4), wherein the middle sand retaining wall (4) is movably connected to an upper adjustable sand retaining wall (10) and a lower adjustable sand retaining wall (11) respectively; and two adjustable columns (9) are arranged vertically side by side, and the two connected adjustable columns (9) are connected to the sand retaining wall via a rotating shaft connector (15).

2. The adjustable sand retaining wall according to claim 1, characterized in that: The adjustable column (9) is provided with a plurality of rotating shaft connecting members (15) in sequence from top to bottom, two adjacent rotating shaft connecting members (15) on the left and right are connected to a sand guide plate, and the side wall of the upper sleeve (12) is provided with six transverse through holes, and the six sand guide plates are connected to the upper sleeve (12) through the rotating shaft connecting members (15). When in use, the sand guide plates can rotate around the axis and automatically adjust the angle according to the wind direction and wind speed; The middle sand retaining wall (4) is a perforated plate; the structures of the upper adjustable sand retaining wall (10) and the lower adjustable sand retaining wall (11) are basically the same, the upper adjustable sand retaining wall (10) comprises a plurality of sand guide plates from top to bottom, which are the first sand guide plate (1), the second sand guide plate (2) and the third sand guide plate (3) in sequence, and the lower adjustable sand retaining wall (11) comprises a plurality of sand guide plates from top to bottom, which are the fourth sand guide plate (5), the fifth sand guide plate (6) and the sixth sand guide plate (7) in sequence. When in use, there is a bottom reserved layer (8) between the lower adjustable sand retaining wall (11) and the ground.

3. The adjustable sand retaining wall according to claim 2, characterized in that: The height of the first sand guide plate (1), the height of the second sand guide plate (2), the height of the third sand guide plate (3), the height of the fourth sand guide plate (5), the height of the fifth sand guide plate (6) and the height of the sixth sand guide plate (7) are the same.

4. The adjustable sand retaining wall according to claim 1, characterized in that: The adjustable column (9) comprises an upper sleeve (12), a middle sleeve (13) and a lower sleeve (14); the outer diameter of the middle sleeve (13) is matched with the inner diameter of the lower sleeve (14); the outer diameter of the upper sleeve (12) is matched with the inner diameter of the middle sleeve (13); the side wall of the lower sleeve (14), the side wall of the middle sleeve (13) and the side wall of the upper sleeve (12) are all provided with transverse through holes; the three sleeves are connected by a bolt connector (16); when in use, the middle sleeve (13) is inserted into the lower sleeve (14), and the upper sleeve (12) can be inserted into the middle sleeve (13) to achieve height telescopic movement.

5. The adjustable sand retaining wall according to claim 2, characterized in that: The middle sand retaining wall (4) is made of a metal plastic-coated mesh, or a low-porosity sand-blocking mesh with a porosity of 20% to 30%.

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