Anti-winding device and system for sand bag sand barrier filling

By designing anti-entanglement devices for supports, mechanisms, and rolling components, the problems of entanglement and knotting during the sandbag filling process were solved, improving filling efficiency, reducing costs, and enhancing construction stability.

CN224241476UActive Publication Date: 2026-05-15NORTH CHINA FORESTRY EXPERIMENTAL CENT CHINESE ACAD OF FORESTRY SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NORTH CHINA FORESTRY EXPERIMENTAL CENT CHINESE ACAD OF FORESTRY SCI
Filing Date
2025-06-23
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing sandbag barriers are prone to tangling and knotting during the sand filling process, resulting in low work efficiency. Furthermore, traditional materials suffer from regional scarcity, high cost, and environmental pollution.

Method used

Design an anti-winding device including a bracket, a support mechanism, and a rolling component. The support mechanism consists of first and second support members spaced apart and with adjustable gaps. The rolling component is mounted on the support members and combined with a conical column structure to ensure the stability and ease of operation of the device.

Benefits of technology

It effectively avoids sandbag tangling and knotting, improves sand filling efficiency, reduces labor intensity, has a small size, is easy to transport, has low overall cost, is suitable for sandbags of different sizes, and enhances construction stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of desert control equipment, and discloses an anti-winding device and system for sand bag sand barrier filling. The device comprises a support, a supporting mechanism and a rolling part. The support comprises a plurality of stand columns and a cross beam, the stand columns comprise two stand columns which are oppositely arranged at intervals, the lower ends of the two stand columns are in a gradually-contracted cone shape, and the cross beam stretches across and is connected with the two stand columns. The supporting mechanism comprises a first supporting piece and a second supporting piece, the first supporting piece is installed on one stand column and provided with a first supporting end, the second supporting piece is installed on the other stand column and provided with a second supporting end, the first supporting end and the second supporting end are arranged at the same height, and the gap between the first supporting end and the second supporting end can be changed. The first supporting end and the second supporting end are each provided with a rolling component capable of rolling. The device has the advantages of being small in size, convenient to transport, easy to operate, resistant to sand blowing and corrosion and low in comprehensive cost, the efficiency of sleeving the sand bag sand barrier on the sand loading tool can be effectively improved, and the construction time is shortened.
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Description

Technical Field

[0001] This utility model relates to the field of desert control equipment, specifically to an anti-tangling device and system for filling sandbags and sand barriers. Background Technology

[0002] Global desertification is a problem that cannot be ignored. Desertification triggers a multi-dimensional ecological chain reaction, including climate change, environmental degradation, degradation of plant and animal communities, soil degradation, and deterioration of hydrological conditions. Effective measures are needed to control the formation of near-surface soil wind erosion, reduce its frequency, and mitigate the disasters caused by near-surface soil wind erosion.

[0003] Sand barriers are one of the effective measures to reduce wind erosion of near-surface soil. Mechanical sand barriers mainly reduce wind speed and weaken wind erosion by changing the properties of the underlying surface and increasing surface roughness, thereby achieving the purpose of windbreak and sand fixation. The earliest materials for mechanical sand barriers were mainly crop straw, willow, stalks, pebbles, and clay, which were widely used in the early stages of sand control and desertification prevention in my country. However, these natural material sand barriers generally suffer from drawbacks in practical application, such as regional scarcity of materials, short effective service life, inconvenient transportation and construction, and high labor and material costs. Newer materials such as petroleum-based sand barriers have higher installation costs and contain environmentally harmful chemical components. They are also difficult to degrade after damage, causing secondary pollution to the soil environment in desert areas.

[0004] With the development of modern technology, new types of sand control materials have emerged, such as sandbags and sand barriers. These are made by fermenting, polymerizing, and melt-spinning plant starches like cassava into polylactic acid fibers. These fibers are then formed into bags, which are filled with locally sourced sand to create flat, sand-fixing sandbag barriers. However, existing sandbag barriers require multiple people to operate during the sand-filling process; otherwise, the sandbags are prone to knotting and tangling, reducing work efficiency.

[0005] Therefore, it is necessary to study an anti-tangling device for filling sandbags and sand barriers to solve the problem of knotting during sand filling. Utility Model Content

[0006] The main purpose of this utility model is to provide an anti-tangling device and system for filling sandbags and sand barriers.

[0007] According to one aspect of the present invention, an anti-tangling device for filling sandbags and sand barriers is provided, the device comprising:

[0008] The support includes multiple columns and a crossbeam. The multiple columns include two columns that are spaced apart from each other. The lower ends of the two columns are tapered and gradually taper. The crossbeam spans and connects the two columns.

[0009] The support mechanism includes a first support member and a second support member. The first support member is installed through one of the two columns and has a first support end located between the two columns. The second support member is installed through the other of the two columns and has a second support end located between the two columns. The first support end and the second support end are set at the same height and the gap between them can be changed.

[0010] The first support end and the second support end are both provided with the rolling component, and the rolling component is capable of rolling relative to the first support end and the second support end.

[0011] According to one embodiment of the present invention, at least one of the first support member and the second support member is movably installed in the column so that the gap between the first support end and the second support end can be changed.

[0012] According to one embodiment of the present invention, the two columns are provided with mounting holes with internal threads near their top ends, and the first support member and the second support member are rods with external threads, which are set in the mounting holes by means of threaded engagement.

[0013] According to one embodiment of the present invention, the first support member and the second support member are telescopic rods, the telescopic rods include multiple nested sleeves, and the outermost sleeve is provided with external threads.

[0014] According to one embodiment of the present invention, the first support member has a first adjustment end axially spaced from the first support end, the second support member has a second adjustment end axially spaced from the second support end, and the first adjustment end and the second adjustment end are provided with adjustment handles.

[0015] According to one embodiment of the present invention, the device further includes a foot pedal disposed on the crossbeam.

[0016] According to one embodiment of the present invention, the rolling component includes a rotary bearing and a protective sleeve, the rotary bearing being connected to the first support end or the second support end, and the protective sleeve being disposed around the rotary bearing.

[0017] According to one embodiment of the present invention, the device further includes a baffle fixedly installed on the first support member and the second support member, the baffle being disposed between the rolling member and the column and adjacent to the rolling member.

[0018] According to another aspect of the present invention, a system for filling sandbags and sand barriers is provided. The system includes: an anti-tangling device as described in any of the preceding claims; a sand-filling cylinder, the sand-filling cylinder being a cylinder open at both ends; and a sand-filling cylinder fixing frame. The sand-filling cylinder fixing frame includes: a support leg located at the bottom; a support rod connected above the support leg; an angle adjustment mechanism connected to the top of the support rod; and a clamp connected above the angle adjustment mechanism, the clamp being used to fix the sand-filling cylinder; wherein the sand-filling cylinder can be aligned at a preset angle with the sandbag roll placed on the first support end and the second support end of the anti-tangling device.

[0019] According to one embodiment of the present invention, the angle adjustment mechanism is a ball joint, and the support rod is a telescopic rod.

[0020] In this anti-tangling device, the support mechanism employs a spaced-apart, adjustable first and second support member, facilitating the installation of sandbag rolls and adapting to sandbag rolls of different sizes. A rolling component is installed at the support position of the sandbag roll, allowing it to rotate during use and preventing tangling or knotting. The roll can be easily unrolled without the need for multiple people. The bottom of the column features a conical structure, allowing the device to be inserted into the sand layer with a single foot, improving overall stability and preventing tipping during use. This device is characterized by its small size, convenient transportation, simple operation, resistance to wind and sand erosion, and low overall cost. It effectively improves the efficiency of sandbag and sand barrier sets when used with sand-filling tools, shortening construction time. In the sandbag and sand barrier filling system of this invention, a sand-filling cylinder fixing frame is used to fix the sand-filling cylinder, which is aligned with the sandbag roll at a set angle, significantly improving bagging efficiency and reducing labor intensity. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure of the anti-tangling device for filling sandbags and sand barriers according to the first embodiment of the present invention is shown.

[0023] Figure 2 A schematic diagram of the overall structure of the anti-tangling device for filling sandbags and sand barriers according to the second embodiment of the present invention is shown.

[0024] Figure 3A schematic diagram showing the usage state of an anti-tangling device for filling sandbags and sand barriers according to an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a sand-filling cylinder fixing frame and a sand-filling cylinder according to an embodiment of the present invention is shown.

[0026] List of reference numerals in the attached diagram:

[0027] 100-Bracket; 110-Column; 120-Beam; 121-Foot pedal; 130-Baffle; 200-Support mechanism; 210-First support component; 220-Second support component; 230-Adjusting handle; 300-Rolling component; 400-Sand filling cylinder; 500-Sand filling cylinder fixing frame; 510-Foot support; 520-Support rod; 530-Angle adjustment mechanism; 540-Clamp; B-Sandbag roll. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0029] The terms "comprising" and "having," and any variations thereof, in the specification and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, or accompanying drawings of this utility model are used to distinguish different objects, not to describe a particular order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0030] In the description of this utility model and the above-described drawings, when an element is referred to as "fixed to," "mounted on," "set on," or "connected to" another element, it can be located directly or indirectly on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0031] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] One aspect of this utility model provides an anti-entanglement device for filling sandbags and sand barriers. The device includes a bracket, a support mechanism, and rolling components. The bracket includes multiple columns and a crossbeam. The multiple columns include two columns spaced apart from each other, with their lower ends tapering into cones. The crossbeam spans and connects the two columns. The support mechanism includes a first support member and a second support member. The first support member is installed through one of the two columns and has a first support end located between the two columns. The second support member is installed through the other of the two columns and has a second support end located between the two columns. The first and second support ends are at the same height, and the gap between them can be varied. Both the first and second support ends are provided with rolling components, which are capable of rolling relative to the first and second support ends.

[0033] When using it, first insert two opposing columns into the sand layer, adjust the gap between the first support end and the second support end to increase it to a position suitable for inserting and installing the sandbag roll, fit the hole channel in the center of the sandbag roll onto the rolling part of the first support end and the second support end, and then reduce the gap between the first support end and the second support end so that the sandbag roll is stably supported on the first support end and the second support end.

[0034] In the anti-tangling device of this utility model, the support mechanism adopts a first support member and a second support member that are spaced apart and have an adjustable gap, which facilitates the installation of sandbag rolls and is applicable to sandbag rolls of different sizes; a rolling component is set at the support position of the sandbag roll so that the sandbag roll can rotate as it is used, avoiding the sandbag from getting tangled or knotted, and the roll can be easily unrolled without the cooperation of multiple people; the bottom of the column adopts a conical structure, and the device can be inserted into the sand layer by stepping on it with one foot, which improves the overall stability of the device and prevents the device from tipping over during use.

[0035] Figure 1 A schematic diagram of the overall structure of an anti-tangling device for filling sandbags and sand barriers according to a first embodiment of the present invention is shown. As shown in the figure, the anti-tangling device for filling sandbags and sand barriers generally includes a bracket 100, a support mechanism 200, and a rolling component 300.

[0036] The support 100 serves as the frame for the entire device. The support 100 may include two uprights 110 and two crossbeams 120. The two uprights 110 are parallel and spaced apart, with their lower ends forming gradually tapering cones. The two crossbeams 120 span across the two uprights 110, one above the other. This support 100 employs a spatial frame configuration of double uprights 110 and double crossbeams 120. The quadrilateral mechanical system constructed by the double uprights 110 and double-layered crossbeams 120 constrains the lateral displacement of the uprights, forming a stable spatial truss structure. Compared to a single-layered crossbeam design, its overall structural stiffness is improved, exhibiting excellent structural stability.

[0037] The lower end of the column 110 is a tapered cone with a gradually narrowing angle, for example, 30° to 60°. An excessively large cone angle will increase insertion resistance, while an excessively small angle will reduce stability. This tapered design of the column 110 facilitates the insertion of the device into the soil surface, improves the overall stability of the device, and prevents the device from tipping over during use.

[0038] In a specific example, the height of the upright 110 is approximately 1 to 1.1 meters, and the length of the crossbeam 120 is approximately 0.3 to 0.4 meters. The crossbeam 120 can be positioned approximately 0.4 to 0.6 meters from the lower end of the upright 110. Setting the bracket 100 to this size not only facilitates carrying, but also, once inserted into the ground, its height allows for the sandbag and sand barrier sets to be fitted onto the sand-filling tools.

[0039] The support mechanism 200 is used to support the sandbag rolls. The support mechanism 200 generally includes a first support member 210 and a second support member 220, which can be rod-shaped. A mounting hole is provided near the top of each column 110, extending radially through the column 110. The first support member 210 is disposed in the mounting hole of one column 110, and the second support member 220 is disposed in the mounting hole of the other column 110. The end of the first support member 210 located between the two columns 110 can be referred to as the first support end, and the end of the second support member 220 located between the two columns 110 can be referred to as the second support end. The first support end and the second support end are set at the same height, and a gap can be left between them. At least one of the first support member 210 and the second support member 220 can move laterally relative to the column 110, allowing the gap between the first support end and the second support end to be changed.

[0040] In one embodiment of this utility model, the mounting hole has internal threads, and the outer surfaces of the first support member 210 and the second support member 220 are provided with external threads. The first support member 210 and the second support member 220 are disposed in the mounting hole by means of threaded engagement. The self-locking characteristic of the threaded pair can provide reliable lateral positioning for the support member, preventing lateral movement during the support of the sandbag roll and thus preventing the sandbag roll from falling off. This threaded engagement method also allows for stepless adjustment of the gap between the first support end and the second support end.

[0041] Optionally, the adjustment of the gap between the first support end and the second support end is not limited to the above structure, and any other suitable structure can be used. For example, a spring can be provided in the mounting hole, with the spring sleeved outside the first support member 210 or the second support member 220. One end of the spring is fixedly connected to the inner wall of the mounting hole, and the other end is fixedly connected to the outer surface of the first support member 210 or the second support member 220. When it is necessary to increase the gap between the first support end and the second support end, the first support member 210 or the second support member 220 is pulled outward (i.e., towards a direction away from the center line between the two columns), the gap between the first support end and the second support end increases, and the spring is compressed. After the sandbag roll is inserted, the first support member 210 or the second support member 220 is released, the first support end and the second support end return to their original positions, and the gap decreases.

[0042] Optionally, in one embodiment of this utility model, the first support member 210 and the second support member 220 are telescopic rods, which are nested sleeves comprising multiple sections, with the outermost sleeve having external threads. When needed, the first support member 210 and the second support member 220 are pulled out to both sides of the inner sleeve, increasing their length for easier operation; after use, the outer ends of the first support member 210 and the second support member 220 are pushed towards the center, causing the inner sleeve to embed into the outer sleeve, shortening their length and reducing the risk of damage during transportation or storage.

[0043] Optionally, in one embodiment of the present invention, the first support member 210 has a first adjustment end axially spaced from the first support end, and the second support member 220 has a second adjustment end axially spaced from the second support end. The first adjustment end and the second adjustment end are provided with an adjustment handle 230. The adjustment handle 230 can be a short rod perpendicular to the axis of the first support member 210 and the second support member 220. Its size is convenient for gripping. By holding the adjustment handle 230, the first support member 210 and the second support member 220 can be easily turned, thereby adjusting the gap between the first support end and the second support end.

[0044] The rolling component 300 is used to cause the sandbag roll to roll, so that the sandbag roll rotates during use, and a single person can easily control the unrolling and unrolling of the sandbag roll. A rolling component 300 is respectively provided at the first support end of the first support member 210 and the second support end of the second support member 220. Specifically, the rolling component 300 can be a rotary bearing, which can be installed to the first and second support ends via a fixing buckle. Optionally, in one embodiment of this utility model, the rolling component 300 further includes a protective sleeve, which is disposed around the rotary bearing to prevent sand from entering the bearing, reducing sand wear on the bearing, and extending the bearing life.

[0045] Figure 2 A schematic diagram of the overall structure of an anti-tangling device for filling sandbags and sand barriers according to a second embodiment of the present invention is shown. This device is related to... Figure 1 The main difference of the device shown is that a foot pedal 121 is added to the crossbeam 120 and a baffle 130 is added to the first support 210 and the second support 220.

[0046] The foot pedal 121 is designed to facilitate the user's application of force with their foot, enabling the bracket 100 to be smoothly inserted into the soil. The foot pedal 121 can be integrally formed with the crossbeam 120 or it can be a separate component attached to the crossbeam 120. The outer surface of the foot pedal 121 may have a textured surface to increase friction, thereby preventing slippage when pedaling.

[0047] Baffle 130 is fixedly installed on the first support member 210 or the second support member 220. The baffle 130 on the first support member 210 is located between the column 110 and the first support end, and is adjacent to the rolling component 300 on the first support member 220. The baffle 130 on the second support member 220 is located between the other column 110 and the second support end, and is adjacent to the rolling component 300 on the second support member 220. Since sandbag rolls are usually flexible rolls, they may accidentally shift or fall off during unwinding. By setting two baffles 130, the sandbag roll is clamped between the two baffles 130, preventing it from moving or falling off.

[0048] Figure 3 This diagram illustrates the usage of an anti-tangle device for filling sandbag barriers according to an embodiment of the present invention, wherein a sandbag roll B is placed on the anti-tangle device and clamped between two baffles 130. In use, the drooping end of the sandbag roll B is pulled to release it.

[0049] Another aspect of this utility model proposes a system for filling sandbags and sand barriers, which generally includes the anti-winding device, sand filling cylinder and sand filling cylinder fixing frame as described above.

[0050] Figure 4 A schematic diagram of a sand-filling cylinder 400 and a sand-filling cylinder fixing frame 500 according to an embodiment of the present invention is shown. The sand-filling cylinder 400 is a cylinder with open ends. The sand-filling cylinder fixing frame 500 includes a support leg 510, a support rod 520, an angle adjustment mechanism 530, and a clamp 540.

[0051] The support leg 510 is used to support the sand filling cylinder fixing frame 500 on the ground. It can be a structure with three legs, each of which has a pointed conical end to facilitate stable support on the ground.

[0052] The support rod 520 is positioned above the support leg 510. The support rod 520 can be a telescopic rod with a multi-segment structure, allowing for easy height adjustment.

[0053] Angle adjustment mechanism 530 is connected to the top of support rod 520. Specifically, angle adjustment mechanism 530 can be a ball joint, which can be rotated freely to the desired position.

[0054] The clamp 540 is used to fix the sand filling cylinder 400 and is connected above the angle adjustment mechanism 530. The clamp 540 may include two halves that are movably connected together to form a closed annulus. The sand filling cylinder 400 can be inserted into the hollow area of ​​the annulus of the clamp 540 and fixed in the clamp 540.

[0055] In use, insert and fix the anti-winding device into the soil surface. Place the sand-filling cylinder fixing frame 500 about 1-2 meters away from the anti-winding device. Install the first end of the sand-filling cylinder 400 into the clamp 540, and make the second end of the sand-filling cylinder 400 closer to the sandbag roll B than the first end. Adjust the support rod 520 so that the clamp 540 is close to or slightly lower than the sandbag roll B. Adjust the angle adjustment mechanism 530 so that the sand-filling cylinder 400 is aligned with the sandbag roll B at a slightly upward tilt angle (such as 1-10° relative to the horizontal plane). Put the free end of the sandbag roll B into the sand-filling cylinder 400 and put sandbags on the entire cylinder of the sand-filling cylinder 400. Move the sandbag part on the second end of the sand-filling cylinder 400 toward the first end of the sand-filling cylinder 400 to stack and press it tightly, so that the sandbags are stacked on the sand-filling cylinder 400. Repeat this process until the entire sand-filling cylinder 400 is filled with stacked sandbags. Cut and tie a knot between the sandbag roll B and the sand-filling cylinder 400, then remove the sand-filling cylinder 400 from the sand-filling cylinder fixing frame 500. Take the sand-filling cylinder 400 with the sandbags to the designated location. Pour sand into the sandbags from the untied end of the sandbags in the sand-filling cylinder 400, manually releasing the sandbags near the knotted end while filling, thus continuously filling the sandbags until the entire sandbag is filled. Remove the sand-filling cylinder 400 from the sandbag. Place the filled sandbags in the designated location. This device and system are characterized by their small size, convenient transportation, simple operation, resistance to wind and sand erosion, and low overall cost. It can effectively improve the efficiency of sandbag and sand barrier sets when used with sand-filling tools and shorten construction time.

[0056] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention as described above exist, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-tangling device for filling sandbags and sand barriers, characterized in that, include: The support (100) includes a plurality of columns (110) and a crossbeam (120). The plurality of columns (110) includes two columns (110) arranged at relative intervals. The lower ends of the two columns (110) are tapered and gradually narrow. The crossbeam (120) spans and connects the two columns (110). A support mechanism (200) includes a first support member (210) and a second support member (220). The first support member (210) is installed through one of the two columns (110) and has a first support end located between the two columns (110). The second support member (220) is installed through the other of the two columns (110) and has a second support end located between the two columns (110). The first support end and the second support end are set at the same height and the gap between them can be changed. The first support end and the second support end are both provided with the rolling component (300), and the rolling component (300) is capable of rolling relative to the first support end and the second support end.

2. The apparatus according to claim 1, characterized in that, At least one of the first support member (210) and the second support member (220) is movably installed in the column (110) so that the gap between the first support end and the second support end can be changed.

3. The apparatus according to claim 2, characterized in that, The two columns (110) are provided with mounting holes with internal threads near their top ends. The first support member (210) and the second support member (220) are rods with external threads, and the rods are set in the mounting holes by means of threaded engagement.

4. The apparatus according to claim 3, characterized in that, The first support member (210) and the second support member (220) are telescopic rods, and the telescopic rods include multiple nested sleeves, with the outermost sleeve having external threads.

5. The apparatus according to claim 3, characterized in that, The first support member (210) has a first adjustment end axially spaced from the first support end, and the second support member (220) has a second adjustment end axially spaced from the second support end. The first adjustment end and the second adjustment end are provided with adjustment handles (230).

6. The apparatus according to claim 1, characterized in that, The device also includes a foot pedal (121) mounted on the crossbeam (120).

7. The apparatus according to claim 1, characterized in that, The rolling component (300) includes a rotary bearing and a protective sleeve. The rotary bearing is connected to the first support end or the second support end, and the protective sleeve is disposed around the rotary bearing.

8. The apparatus according to claim 1, characterized in that, The device further includes a baffle (130) fixedly installed on the first support member (210) and the second support member (220), the baffle (130) being disposed between the rolling member (300) and the column (110) and adjacent to the rolling member (300).

9. A system for filling sandbags and sand barriers, characterized in that, include: The anti-winding device according to any one of claims 1-8; Sand-filling cylinder (400), wherein the sand-filling cylinder (400) is a cylinder with open ends; A sand-filling cylinder fixing frame (500), the sand-filling cylinder fixing frame (500) comprising: Support leg (510) located at the bottom; A support rod (520) is connected above the support leg (510); An angle adjustment mechanism (530) is connected to the top of the support rod (520); A clamp (540) is connected above the angle adjustment mechanism (530), the clamp (540) being used to fix the sand filling cylinder (400); The sand-filling cylinder (400) is able to be aligned at a preset angle with the sandbag rolls placed on the first support end and the second support end of the anti-winding device.

10. The system according to claim 9, characterized in that, The angle adjustment mechanism (530) is a ball joint, and the support rod (520) is a telescopic rod.