A special-shaped structure fence type sand retaining wall

Abstract

The application relates to the field of wind prevention and sand fixation, in particular to a special-shaped structure fence type sand retaining wall, which comprises a frame, fence bars and a stand column, the stand column is arranged at the bottom end of the frame, the stand column is fixedly connected with the frame, one end of the stand column away from the frame is inserted into the ground, the stand column is used for fixing the frame on the ground, the fence bars are arranged in a plurality of groups, and the plurality of groups of fence bars are rotationally arranged in the frame; the outer surface of the fence bar is a twisted complex curved surface type, the twisting angle of the fence bar gradually increases with the height of the fence bar, the fence bar is uniformly twisted from the bottom end to the top end, both ends of each fence bar are fixedly connected with a rotating shaft, and the rotating shafts at both ends of the fence bar are rotationally connected with top rods and bottom rods of the frame. The special-shaped structure fence type sand retaining wall can reduce the strength of the wind-sand flow, protect the sand retaining wall, reduce the damage of the wind-sand flow to the sand retaining wall, and prolong the service life of the sand retaining wall.

Description

Technical Field

[0001] This application relates to the field of windbreak and sand fixation, and in particular to a non-standard structure fence-type sand retaining wall. Background Technology

[0002] With the rapid economic development in western my country, urban infrastructure construction, including railways and highways, is being carried out extensively in the deserts and Gobi regions of Northwest my country. These areas are characterized by sparse vegetation and frequent sandstorms. Since the opening of the Lanzhou-Xinjiang Railway and the Qinghai-Tibet Railway, sandstorms have become a significant threat to the safe operation of trains. Train stoppages caused by sandstorms burying railways have resulted in enormous economic losses for travelers and railway transportation.

[0003] Existing engineering measures for sand control mainly include sand stabilization and sand-blocking measures, with sand-blocking measures being more widely used. Sand-blocking measures include concrete sleeper sand-retaining walls, high vertical sand barriers made of PE mesh, and reed sand-blocking fences, etc. These engineering sand control measures have played a certain role in existing railway and highway wind and sand disaster prevention projects. Because sand-retaining walls have a large windward area, their stability is required to be high.

[0004] The existing technical solutions mentioned above have the following drawbacks: wind and sand can easily damage the sand retaining wall, resulting in a short service life for the sand retaining wall. Summary of the Invention

[0005] In order to reduce the damage of wind and sand to sand-retaining walls and extend their service life, this application provides a non-standard structure fence-type sand-retaining wall.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A uniquely shaped fence-type sand retaining wall includes a frame, fence bars, and posts. The posts are located at the bottom of the frame and are fixedly connected to the frame. The end of the post away from the frame is inserted into the ground to fix the frame to the ground. Several fence bars are provided, and all fence bars are rotatably installed inside the frame.

[0008] The outer surface of the fence is designed as a complex curved surface with twist. As the height of the fence increases, the fence twists uniformly from the bottom to the top with the same angle. Each fence has a pivot fixedly connected to both ends, and the pivots at both ends of the fence are rotatably connected to the top and bottom bars of the frame, respectively.

[0009] By adopting the above scheme, when the fence bars are blown by the wind, the fence bars rotate in the frame, and since the outer surface of the fence bars is a twisted curved surface, the twist degree of each cross section of the fence bars is a fixed value as the height increases, the vortex shedding frequency of the airflow at each height is different, the wind-sand flow cannot form resonance with the fence bars, thereby effectively reducing the wind resistance of the wind-sand flow passing through the sand retaining wall, reducing the shaking and damage of the wind-sand flow to the sand retaining wall, playing a role of shock isolation and energy consumption, which can reduce the strength of the wind-sand flow and protect the sand retaining wall, reduce the damage of the wind to the sand retaining wall, and prolong the service life of the sand retaining wall; meanwhile, when the wind-sand flow passes through the fence bars, the wind-sand flow generates upward rotating airflow along with the fence bars, thereby generating vortex flow above the frame, and the vortex flow greatly reduces the strength of the wind-sand flow.

[0010] Further, a groove is formed at the edge line of each fence bar.

[0011] By adopting the above scheme, the groove is arranged on the fence bar to guide the wind-sand to move upward when the fence bar is blown and rotated, thereby further increasing the vortex flow strength of the fence bar and improving the effect of reducing the wind-sand flow.

[0012] Further, the bottom end of the frame is provided with a sand cleaning device for cleaning the sand accumulated at the bottom end of the frame; the sand cleaning device comprises a sand cleaning piece, a sliding block, a reciprocating screw rod and a guide rod, the reciprocating screw rod is rotationally arranged at the bottom end of the frame, the reciprocating screw rod is connected with a driving device, the driving device is used to drive the reciprocating screw rod to rotate, the sliding block is arranged on the reciprocating screw rod and moves back and forth on the reciprocating screw rod, the guide rod is fixedly connected with the frame and slidably connected with the sliding block, and the sand cleaning piece is fixedly connected with the sliding block.

[0013] By adopting the above scheme, as the strength of the wind-sand flow decreases, the carrying capacity of the wind-sand flow decreases, and therefore the sand is deposited around the sand retaining wall; in order to avoid that the deposited sand buries the sand retaining wall, the sand cleaning device is arranged, the driving device drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the sliding block to move back and forth, the guide rod is used to guide the sliding direction of the sliding block, and the sliding block drives the sand cleaning piece to move back and forth along the reciprocating screw rod, thereby cleaning the deposited sand at the bottom end of the frame and avoiding that the deposited sand buries the sand retaining wall.

[0014] Further, the bottom rod is provided with a containing cavity, each rotating shaft of the bottom end of the fence rod passes through the side wall of the containing cavity and is located in the containing cavity, the drive device is located in the containing cavity, the drive device comprises a plurality of driving gears, a chain, an output gear and a driven gear, the driving gears are arranged in the containing cavity, each rotating shaft is fixedly connected with one driving gear, the chain is used for connecting the driving gears together, the output gear is fixedly connected with one driving gear on one rotating shaft, the driven gear is rotatably arranged in the containing cavity, the driven gear is engaged with the output gear, and a transmission assembly is arranged between the driven gear and the reciprocating lead screw.

[0015] By using the above scheme, when the sand drives the fence rod to rotate, the fence rod drives the driving gears to rotate through the rotating shaft, one rotating shaft drives the output gear to rotate synchronously, the driving gears rotate synchronously through the chain, the force applied to the output gear is increased, the output gear drives the driven gear to rotate, and the driven gear drives the reciprocating lead screw to rotate through the transmission assembly, so as to drive the reciprocating lead screw to rotate.

[0016] Further, the transmission assembly comprises a transmission shaft and a bevel gear set, the transmission shaft is fixedly connected with the driven gear, one end of the transmission shaft away from the driven gear passes through the side wall of the containing cavity and is connected with the bevel gear set, the transmission shaft is rotatably connected with the side wall of the containing cavity, the bevel gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is fixedly connected with the transmission shaft, the second bevel gear is fixedly connected with the reciprocating lead screw, and the first bevel gear and the second bevel gear are engaged.

[0017] By using the above scheme, the transmission shaft is driven to rotate by the driven gear, the first bevel gear is driven to rotate by the transmission shaft, the second bevel gear is driven to rotate by the rotation of the first bevel gear, and the reciprocating lead screw is driven to rotate by the second bevel gear, so that the high transmission ratio of the bevel gear set is utilized to reduce the loss during force transmission.

[0018] Further, the bevel gear set is provided with a protective cover, the protective cover covers the outside of the bevel gear set, and the protective cover is fixedly connected with the frame.

[0019] By using the above scheme, the protective performance of the bevel gear is improved by arranging the protective cover.

[0020] Further, the diameter of the driven gear is greater than the diameter of the output gear.

[0021] By using the above scheme, the diameter of the driven gear is greater than the diameter of the output gear, so that the force output by the driven gear is increased, that is, the output gear can drive the reciprocating lead screw to rotate through the driven gear by using small force.

[0022] Further, the reciprocating screw rod is rotationally connected with the frame through the connecting plates, both ends of the reciprocating screw rod are provided with the connecting plates, each connecting plate is fixedly connected with the frame, both ends of the reciprocating screw rod are rotationally connected with the two connecting plates, and both ends of the guide rod are fixedly connected with the two connecting plates.

[0023] By adopting the above scheme, the reciprocating screw rod is fixed at the bottom end of the frame through the connecting plates, and the convenience of installing the reciprocating screw rod is improved through the connecting plates.

[0024] Further, the outer side of the reciprocating screw rod is provided with dustproof bags, the dustproof bags are provided in two, the two dustproof bags are located on the two sides of the sliding block respectively, and the two sides of the dustproof bag are fixedly connected with the sliding block and the connecting plate respectively.

[0025] By adopting the above scheme, the reciprocating screw rod is protected without affecting the normal work of the reciprocating screw rod, the damage of the wind sand to the reciprocating screw rod is reduced, and the sand cleaning device cannot be normally used.

[0026] Further, the sand cleaning part comprises left and right push plates, the left and right push plates are symmetrically arranged, and the left and right push plates are fixedly connected with the sliding block.

[0027] By adopting the above scheme, the left and right push plates are arranged, so that the sliding block can be sand cleaned during reciprocating movement, and the sand cleaning efficiency is improved.

[0028] In summary, the application has the following technical effects:

[0029] By arranging the twisted fence rods to rotate in the frame, when the fence rods are blown by the wind, the fence rods rotate in the frame, the outer surface of the fence rods is a twisted curved surface, the twisting degree of each cross section of the fence rods is a fixed value as the height increases, the twisted curved surface can make the vortex shedding frequency of the airflow at each height different, the wind sand flow cannot form resonance on the fence rods, thereby effectively reducing the wind resistance of the wind sand flow passing through the sand retaining wall, reducing the shaking and damage of the wind sand flow to the sand retaining wall, playing a shock isolation and energy consumption role, reducing the strength of the wind sand flow, protecting the sand retaining wall, reducing the damage of the wind sand flow to the sand retaining wall, and prolonging the service life of the sand retaining wall; meanwhile, when the wind sand flow passes through the fence rods, the wind sand flow generates upward rotating airflow along with the fence rods, thereby generating vortex flow, greatly reducing the strength of the wind sand flow.

[0030] By setting with the wind sand flow intensity decreases, the carrying sand ability of wind sand flow decreases, so the sand is deposited around the sand retaining wall, in order to avoid the deposited sand burying the sand retaining wall, therefore the sand cleaning device is set, the driving device drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the sliding block to reciprocate, the guide rod is used for guiding the sliding direction of the sliding block, the sliding block drives the sand cleaning piece to reciprocate along the reciprocating screw rod, so as to clean the deposited sand at the bottom end of the frame, avoid the deposited sand burying the sand retaining wall;

[0031] By setting the driving device, when the wind sand drives the fence rod to rotate, the fence rod drives the driving gear to rotate through the shaft, one of the shafts drives the output gear to rotate synchronously, a plurality of driving gears rotate synchronously through the chain, increase the force applied to the output gear, avoid that one fence rod cannot drive the output gear to rotate, the output gear drives the driven gear to rotate, the driven gear drives the reciprocating screw rod to rotate through the transmission assembly, so as to drive the reciprocating screw rod to rotate; Make full use of the kinetic energy provided by the wind sand to clean the deposited sand around the sand retaining plate, without additional energy to clean the deposited sand, and also can achieve the effect of consuming wind energy. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a special-shaped structure fence type sand retaining wall structure schematic diagram of the application;

[0033] Figure 2 It is a structure schematic diagram of the driving device of the application;

[0034] Figure 3 It is a structure schematic diagram of the driven gear and the output gear of the application;

[0035] Figure 4 It is a structure schematic diagram of the transmission assembly of the application;

[0036] Figure 5 It is a structure schematic diagram of the wind wall forming device in the second embodiment of the application;

[0037] Figure 6 It is a structure schematic diagram of the position of the cross beam and the connecting rod in the wind cover;

[0038] Figure 7 It is a structure schematic diagram of the connecting rod.

[0039] In the figure, 1, frame; 11, top rod; 12, bottom rod; 121, accommodating cavity; 13, side rod; 2, fence rod; 21, groove; 3, stand; 4, rotating shaft; 5, sand cleaning device; 51, sand cleaning piece; 511, left push plate; 512, right push plate; 52, sliding block; 53, reciprocating lead screw; 54, guide rod; 6, driving device; 61, driving gear; 62, chain; 63, output gear; 64, driven gear; 7, transmission assembly; 71, transmission shaft; 72, bevel gear set; 721, first bevel gear; 722, second bevel gear; 8, protective cover; 9, connecting plate; 10, dust bag; 20, wind wall forming device; 201, wind shielding cover; 202, connecting rod; 2021, first rod; 2022, second rod; 2023, spring; 2024, insertion rod; 203, cross beam; 30, wing plate. DETAILED DESCRIPTION

[0040] The application will be further described in detail below with reference to the accompanying drawings. Embodiment One

[0041] With reference to Figure 1 and Figure 2 , the embodiment provides a special-shaped structure fence type sand retaining wall, which comprises a frame 1, a fence rod 2 and a stand 3, the stand 3 is arranged at the bottom end of the frame 1, the stand 3 is fixedly connected with the frame 1, one end of the stand 3 away from the frame 1 is inserted into the ground, and the stand 3 is used for fixing the frame 1 on the ground; a plurality of fence rods 2 are arranged, and the plurality of fence rods 2 are all rotationally arranged in the frame 1; the bottom end of the frame 1 is provided with a sand cleaning device 5, and the sand cleaning device 5 is used for cleaning sand particles accumulated at the bottom end of the frame 1; in the embodiment, the frame 1 comprises a bottom rod 12, a top rod 11 and a side rod 13, two side rods 13 are arranged between the top rod 11 and the bottom rod 12, and the two ends of the side rod 13 are fixedly connected with the top rod 11 and the bottom rod 12 respectively.

[0042] With reference to Figure 1 and Figure 2 , the outer surface of the fence rod 2 is a twisted complex curved surface type, the twist angle of the fence rod 2 gradually increases with the increase of the height of the fence rod 2, and the fence rod 2 is uniformly twisted from the bottom end to the top end; in the embodiment, the fence rod 2 is twisted by 120° from the bottom end to the top end, one rotating shaft 4 is fixedly connected with each end of each fence rod 2, and the rotating shafts 4 at the two ends of the fence rod 2 are rotationally connected with the top rod 11 and the bottom rod 12 of the frame 1 respectively; a groove 21 is arranged at the edge line of each fence rod 2.

[0043] With reference to Figure 1 and Figure 2The sand cleaning device 5 comprises a sand cleaning part 51, a sliding block 52, a reciprocating lead screw 53 and a guide rod 54. The reciprocating lead screw 53 is rotationally arranged at the bottom end of the frame 1. The reciprocating lead screw 53 is connected with a driving device 6. The driving device 6 is used for driving the reciprocating lead screw 53 to rotate. The sliding block 52 is arranged on the reciprocating lead screw 53. The sliding block 52 moves back and forth on the reciprocating lead screw 53. The guide rod 54 is fixedly connected with the frame 1. The guide rod 54 is slidably connected with the sliding block 52. The sand cleaning part 51 is fixedly connected with the sliding block 52. The reciprocating lead screw 53 is rotationally connected with the frame 1 through the connecting plates 9. The two ends of the reciprocating lead screw 53 are both provided with the connecting plates 9. Each connecting plate 9 is fixedly connected with the frame 1. The two ends of the reciprocating lead screw 53 are both rotationally connected with the two connecting plates 9. The two ends of the guide rod 54 are fixedly connected with the two connecting plates 9. The outer side of the reciprocating lead screw 53 is sleeved with the dustproof bags 10. The dustproof bags 10 are provided in two. The two dustproof bags 10 are respectively located at the two sides of the sliding block 52. The two sides of the dustproof bag 10 are fixedly connected with the sliding block 52 and the connecting plate 9 respectively.

[0044] With reference to Figure 2 and Figure 3 , the bottom rod 12 is internally provided with an accommodating cavity 121. The rotating shaft 4 at the bottom end of each fence rod 2 penetrates through the side wall of the accommodating cavity 121 and is located in the accommodating cavity 121. The driving device 6 is located in the accommodating cavity 121. The driving device 6 comprises a driving gear 61, a chain 62, an output gear 63 and a driven gear 64. The driving gear 61 is provided with a plurality of driving gears 61. Each rotating shaft 4 is fixedly connected with one driving gear 61. The chain 62 is used for connecting the plurality of driving gears 61 together. The output gear 63 is commonly fixed on one rotating shaft 4 with one driving gear 61. The driven gear 64 is rotationally arranged in the accommodating cavity 121. The driven gear 64 is in mesh with the output gear 63. The driven gear 64 and the reciprocating lead screw 53 are provided with a transmission assembly 7. The driven gear 64 drives the reciprocating lead screw 53 to rotate through the transmission assembly 7. The diameter of the driven gear 64 is greater than the diameter of the output gear 63.

[0045] With reference to Figure 3 and Figure 4 , the transmission assembly 7 comprises a transmission shaft 71 and a bevel gear set 72. The transmission shaft 71 is fixedly connected with the driven gear 64. The end of the transmission shaft 71, which is away from the driven gear 64, penetrates through the side wall of the accommodating cavity 121 and is connected with the bevel gear set 72. The transmission shaft 71 is rotationally connected with the side wall of the accommodating cavity 121. The bevel gear set 72 comprises a first bevel gear 721 and a second bevel gear 722. The first bevel gear 721 is fixedly connected with the transmission shaft 71. The second bevel gear 722 is fixedly connected with the reciprocating lead screw 53. The first bevel gear 721 and the second bevel gear 722 are in mesh. The bevel gear set 72 is provided with a protective cover 8. The protective cover 8 covers the outer side of the bevel gear set 72. The protective cover 8 is fixedly connected with the frame 1.

[0046] With reference to Figure 2The sand cleaning piece 51 comprises a left push plate 511 and a right push plate 512, and the left push plate 511 and the right push plate 512 are symmetrically arranged and are fixedly connected with the sliding block 52.

[0047] The embodiment of the application has the following advantages: when the sand barrier is used, the fence pole 2 rotates in the frame 1 when it is blown by the wind, the outer surface of the fence pole 2 is a twisted curved surface, the vortex shedding frequency of the airflow at each height is different, the wind-sand flow cannot form resonance on the fence pole 2, the wind resistance of the wind-sand flow passing through the sand barrier is effectively reduced, the shaking and damage of the wind-sand flow to the sand barrier are reduced, the vibration isolation and energy consumption are achieved, the strength of the wind-sand flow is reduced, the sand barrier is protected, the damage of the wind to the sand barrier is reduced, and the service life of the sand barrier is prolonged; at the same time, when the wind-sand flow passes through the fence pole 2, the wind-sand flow generates upward rotating airflow along with the fence pole 2, vortex is generated, and the strength of the wind-sand flow is greatly reduced.

[0048] When the fence pole 2 is rotated by the wind-sand, the fence pole 2 drives the driving gear 61 to rotate through the rotating shaft 4, one rotating shaft 4 drives the output gear 63 to synchronously rotate, the plurality of driving gears 61 synchronously rotate through the chain 62, the force applied to the output gear 63 is increased, the output gear 63 is prevented from being unable to rotate by one fence pole 2, the driven gear 64 is driven to rotate by the output gear 63, the transmission shaft 71 is driven to rotate by the driven gear 64, the first bevel gear 721 is driven to rotate by the transmission shaft 71, the second bevel gear 722 is driven to rotate by the first bevel gear 721, the reciprocating lead screw 53 is driven to rotate by the second bevel gear 722, the sliding block 52 is driven to reciprocate by the reciprocating lead screw 53, the guide rod 54 is used for guiding the sliding direction of the sliding block 52, the left push plate 511 and the right push plate 512 are driven to reciprocate along the reciprocating lead screw 53 by the sliding block 52, so that the deposited sand at the bottom end of the frame 1 is cleaned, and the deposited sand is prevented from burying the sand barrier. Embodiment two

[0049] With reference to Figures 5-7The embodiment two of the application is different from the embodiment one in that the top end of the frame 1 is provided with a wind wall forming device 20, the wind wall forming device 20 comprises a wind guide cover 201, a cross beam 203 and a connecting rod 202, the wind guide cover 201 is provided in a streamline shape, the wind guide cover 201 is arranged at the top end of the frame 1, the top end of the wind guide cover 201 is an air outlet, the bottom end is an air inlet, the wind guide cover 201 is in a whole streamline shape of a horn, that is, the sectional area of the air inlet is larger than that of the air outlet, the wind guide cover 201 is used for restraining the flow direction of the airflow guided by the fence rod 2, so that the wind wall is formed at the top end of the frame 1, and the wind blocking effect of the sand retaining wall is strengthened, the cross beam 203 is arranged in the wind guide cover 201, two ends of the cross beam 203 are fixedly connected with two side walls of the wind guide cover 201 respectively, the connecting rod 202 is arranged between the cross beam 203 and the frame 1, the connecting rod 202 comprises a first rod 2021 and a second rod 2022, the first rod 2021 is fixedly connected with the frame 1, the second rod 2022 is fixedly connected with the cross beam 203, one end of the first rod 2021 away from the frame 1 is provided with a plug-in slot, the second rod 2022 is fixedly connected with an insertion rod 2024 away from the cross beam 203, the insertion rod 2024 is plug-in matched with the plug-in slot, a spring 2023 is arranged in the plug-in slot, two ends of the spring 2023 are fixedly connected with a bottom wall of the plug-in slot and the insertion rod 2024 respectively.

[0050] When the fence rod 2 rotates to form the upward airflow, the airflow enters the wind guide cover 201 from the air inlet, is restrained by the wind guide cover 201 and flows out from the air outlet at the top end of the wind guide cover 201, because the sectional area of the air inlet is larger than that of the air outlet, the airflow accelerates to flow out at the air outlet, the effect of the wind wall at the top end of the frame 1 is improved, and the sand retaining effect of the sand retaining wall is further improved.

[0051] Referring to Figure 5 and Figure 6 In the embodiment, the groove 21 of the fence rod 2 is further provided with a wing plate 30, the wing plate 30 is fixedly connected with the fence rod 2, the wing plate 30 twists synchronously with the twist of the fence rod 2, the wing plate 30 is used for increasing the wind area of the fence rod 2, increasing the pushing of the wind force on the fence rod 2, and improving the wind blocking effect of the sand retaining wall.

[0052] The specific embodiment is only an explanation of the application, and is not a limitation of the application, and those skilled in the art can make a modification of the embodiment without creative contribution according to the needs after reading the specification, but as long as the modification is within the scope of the claims of the application, it is protected by the patent law.

Claims

1. A sand retaining wall of the fence type with a special profile, characterized in that: Including frame (1), fence pole (2) and stand (3), stand (3) is provided at the bottom end of frame (1), stand (3) is fixedly connected with frame (1), the end of stand (3) away from frame (1) is inserted into the ground, for fixing frame (1) on the ground, fence pole (2) is provided with several, several fence poles (2) are all rotationally arranged in frame (1); The outer surface of the fence pole (2) is provided as a twisted complex curved surface type, as the height of the fence pole (2) rises, the bottom end to the top end of the fence pole (2) is uniformly twisted with consistent twist angle, both ends of each fence pole (2) are fixedly connected with a rotating shaft (4), the rotating shaft (4) at both ends of the fence pole (2) is rotationally connected with the top rod (11) and the bottom rod (12) of the frame (1) respectively, a groove (21) is formed at the edge line of each fence pole (2), the top end of the frame (1) is provided with a wind wall forming device (20), the wind wall forming device (20) includes a wind cover (201), a cross beam (203) and a connecting rod (202), the wind cover (201) is provided as a streamline type, the wind cover (201) is arranged at the top end of the frame (1), the wind cover (201) is provided with an air outlet at the top end and an air inlet at the bottom end, the wind cover (201) is in the shape of a streamline type horn, that is, the cross-sectional area of the air inlet is larger than that of the air outlet, the cross beam (203) is arranged in the wind cover (201), both ends of the cross beam (203) are fixedly connected with the two side walls of the wind cover (201), the connecting rod (202) is arranged between the cross beam (203) and the frame (1), the connecting rod (202) includes a first rod (2021) and a second rod (2022), the first rod (2021) is fixedly connected with the frame (1), the second rod (2022) is fixedly connected with the cross beam (203), a plug-in slot is formed at the end of the first rod (2021) away from the frame (1), the second rod (2022) is fixedly connected with an insertion rod (2024) at the end away from the cross beam (203), the insertion rod (2024) is plug-in matched with the plug-in slot, a spring (2023) is arranged in the plug-in slot, both ends of the spring (2023) are fixedly connected with the bottom wall of the plug-in slot and the insertion rod (2024) respectively.

2. A sand fence according to claim 1, wherein: The bottom end of the frame (1) is provided with a sand cleaning device (5), the sand cleaning device (5) is used for cleaning the sand particles accumulated at the bottom end of the frame (1), the sand cleaning device (5) includes a sand cleaning piece (51), a sliding block (52), a reciprocating lead screw (53) and a guide rod (54), the reciprocating lead screw (53) is rotationally arranged at the bottom end of the frame (1), the reciprocating lead screw (53) is connected with a driving device (6), the driving device (6) is used for driving the reciprocating lead screw (53) to rotate, the sliding block (52) is arranged on the reciprocating lead screw (53), the sliding block (52) moves back and forth on the reciprocating lead screw (53), the guide rod (54) is fixedly connected with the frame (1), the guide rod (54) is slidingly connected with the sliding block (52), the sand cleaning piece (51) is fixedly connected with the sliding block (52).

3. A sand fence according to claim 2, wherein: The bottom rod (12) is provided with a containing cavity (121), the rotating shaft (4) at the bottom end of each fence rod (2) penetrates the side wall of the containing cavity (121) and is located in the containing cavity (121), the driving device (6) is located in the containing cavity (121), the driving device (6) comprises a driving gear (61), a chain (62), an output gear (63) and a driven gear (64), the driving gear (61) is provided with a plurality of driving gears (61), each rotating shaft (4) is fixedly connected with a driving gear (61), the chain (62) is used for connecting the plurality of driving gears (61) together, the output gear (63) is fixedly connected with a driving gear (61) on a rotating shaft (4), the driven gear (64) is rotatably arranged in the containing cavity (121), the driven gear (64) is engaged with the output gear (63), and the driven gear (64) and the reciprocating lead screw (53) are provided with a transmission assembly (7), and the driven gear (64) drives the reciprocating lead screw (53) to rotate through the transmission assembly (7).

4. A sand fence according to claim 3, wherein: The transmission assembly (7) comprises a transmission shaft (71) and a bevel gear set (72), the transmission shaft (71) is fixedly connected with the driven gear (64), one end of the transmission shaft (71) away from the driven gear (64) penetrates the side wall of the containing cavity (121) and is connected with the bevel gear set (72), the transmission shaft (71) is rotatably connected with the side wall of the containing cavity (121), and the bevel gear set (72) comprises a first bevel gear (721) and a second bevel gear (722), the first bevel gear (721) is fixedly connected with the transmission shaft (71), the second bevel gear (722) is fixedly connected with the reciprocating lead screw (53), and the first bevel gear (721) and the second bevel gear (722) are engaged.

5. A contoured fence-type sand berm according to claim 4, wherein: The bevel gear set (72) is provided with a protective cover (8), the protective cover (8) covers the outside of the bevel gear set (72), and the protective cover (8) is fixedly connected with the frame (1).

6. A sand wall according to claim 3, wherein: The diameter of the driven gear (64) is greater than that of the output gear (63).

7. A sand wall according to claim 2, wherein: The reciprocating lead screw (53) is rotatably connected with the frame (1) through the connecting plates (9), the two ends of the reciprocating lead screw (53) are provided with the connecting plates (9), each connecting plate (9) is fixedly connected with the frame (1), and the two ends of the reciprocating lead screw (53) are rotatably connected with the two connecting plates (9), and the two ends of the guide rod (54) are fixedly connected with the two connecting plates (9).

8. A contoured fence-type sand berm according to claim 7, wherein: The outer side of the reciprocating lead screw (53) is provided with a dust bag (10), the dust bag (10) is provided with two, the two dust bags (10) are located on the two sides of the sliding block (52), and the two sides of the dust bag (10) are fixedly connected with the sliding block (52) and the connecting plate (9).

9. A sand wall according to claim 2, wherein: The sand removing part (51) comprises left and right push plates (511) and (512), the left and right push plates (511) and (512) are symmetrically arranged, and the left and right push plates (511) and (512) are fixedly connected with the sliding block (52).

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