A subgrade geotechnical material laying device

Abstract

The utility model discloses a kind of roadbed geotechnical material laying device, including both sides of movable end frame, two end frames are connected and set between both sides by adjusting rod, the upper portion of the end frame is provided with the support shaft of quick disassembly, the geotextile membrane roll is supported on the support shaft, the utility model is laid by laying device and its adjusting rod, support shaft structure, by adjustable end frame and support shaft design, the mechanized laying of different width geotechnical material is realized, the problem of low efficiency, unstable quality of manual laying is solved, with the advantages of improving laying efficiency, guaranteeing laying quality, reducing labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical material laying, specifically to a roadbed geotechnical material laying device. Background Technology

[0002] Geogrids, as mesh materials made of high-molecular polymers, are widely used in foundation reinforcement projects in the field of civil engineering. These materials significantly improve the bearing capacity of the foundation by enhancing soil interlocking, and their high strength and corrosion resistance make them an ideal choice for soft soil foundation reinforcement and pavement crack prevention in highway and other engineering projects.

[0003] However, existing geogrid laying techniques have significant drawbacks: the laying of geogrid rolls relies entirely on manual labor, which is not only labor-intensive and inefficient but also makes it difficult to guarantee consistent laying quality. Due to the instability of manual operation, problems such as uneven laying and non-standard overlapping frequently occur, resulting in a high rework rate and significantly increasing construction and time costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a roadbed geotechnical material laying device.

[0005] This utility model is achieved through the following technical solution:

[0006] This application provides a roadbed geotextile laying device, including movable end frames on both sides, which are connected by adjusting rods on both sides. A quick-release support shaft is provided on the upper part of the end frame, and a geomembrane roll is supported on the support shaft.

[0007] Furthermore, this application also proposes that the adjusting rod includes a sleeve rod, a sliding rod is slidably connected inside the sleeve rod, and a plurality of insertion holes are provided on the sleeve rod, into which a fixing pin is inserted.

[0008] Furthermore, this application also proposes that the support shaft is provided with limiting short shafts at both ends that match the bearings, the limiting short shafts are snapped into the slots opened in the support block, the support block is fixed to the top of the end frame, and the connection between the support shaft and the limiting short shafts is limited to the inner ring of the bearing.

[0009] Furthermore, this application also proposes that the support shaft includes a bushing and a sliding shaft internally inserted.

[0010] Furthermore, this application also proposes that the front end of the end frame is connected to the tractor vehicle via a pull rope.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model, through the laying device and its adjusting rod and support shaft structure, and through the design of adjustable end frames and support shafts, realizes the mechanized laying of geosynthetic materials of different widths, solves the problems of low efficiency and unstable quality of manual laying, and has the advantages of improving laying efficiency, ensuring laying quality, and reducing labor intensity. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 yes Figure 1 Enlarged view of a local structure in the diagram;

[0014] Figure 3 A schematic diagram of the installation structure of this practical support shaft;

[0015] Figure 4 This is a schematic diagram of the usage status of this utility model;

[0016] In the diagram: 1. End frame; 2. Sleeve rod; 3. Slide rod; 4. Insertion hole; 5. Pin shaft; 6. Support block; 7. Slot; 8. Support shaft; 81. Bushing; 82. Sliding shaft; 9. Limiting short shaft; 10. Bearing; 11. Geomembrane roll; 12. Tractor; 13. Pull rope. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1-3 As shown, this application proposes a roadbed geotextile laying device, including two movable end frames, which are connected on both sides by adjusting rods. A quick-release support shaft is provided on the upper part of the end frames, and a geomembrane roll is supported on the support shaft.

[0019] The end frames, serving as the main support structure of the device, can be made of steel frames or aluminum alloy, and their bottoms can be fitted with casters for mobility. Adjusting rods connect the two end frames and adjust their spacing. Support shafts support the geomembrane rolls and can be made of adjustable-length hollow steel pipes or solid steel shafts; their quick-release function is achieved through a snap-fit ​​mechanism. The geomembrane rolls can be installed by directly sleeve-attaching them to the support shaft.

[0020] This technical solution solves the problems of low efficiency and difficulty in ensuring construction quality when manually laying geomembrane materials by using an adjustable-spacing end frame structure and a quick-disassembly support shaft design. Compared with existing technologies, this device enables mechanized laying operations, significantly improving construction efficiency; at the same time, the standardized installation structure ensures consistent laying quality and avoids errors caused by manual operation. Specifically, the adjustable rod structure can flexibly adjust the laying width according to actual construction needs, while the quick-disassembly support shaft design facilitates the replacement and maintenance of geomembrane rolls, thereby improving overall construction efficiency.

[0021] Furthermore, this application also proposes that the adjusting rod includes a sleeve rod, a sliding rod is slidably connected inside the sleeve rod, and multiple insertion holes are provided on the sleeve rod, with a fixing pin inserted into each insertion hole.

[0022] The sleeve rod can be made of hollow steel or aluminum alloy tubing, with an inner diameter slightly larger than the outer diameter of the slide rod to ensure smooth sliding. The slide rod can be made of solid steel with a polished surface to reduce frictional resistance. The insertion holes are evenly spaced along the length of the sleeve rod, with the spacing set to 50mm or 100mm according to actual adjustment requirements. The fixing pin can be a spring pin, which allows for quick insertion and removal.

[0023] This technical solution achieves adjustable rod length through the sliding engagement of the sleeve rod and slide rod. Combined with the positioning structure of the insertion hole and fixing pin, it enables quick and accurate adjustment of the spacing between two end frames. Compared to existing technologies with fixed-length connecting rods, this design can adapt to the laying requirements of geotextile materials of different widths, effectively solving the problem of difficult manual adjustment. Specifically, during construction, simply pull out the fixing pin, slide it to the required length, and then reinsert it for fixation; the operation is simple and the positioning is reliable. This structure significantly improves construction efficiency while ensuring connection strength, avoiding material waste or laying quality problems caused by improper spacing.

[0024] Furthermore, this application also proposes that the support shaft is provided with limiting short shafts at both ends that match the bearings, the limiting short shafts are snapped into the slots opened in the support block, the support block is fixed to the top of the end frame, and the connection between the support shaft and the limiting short shaft is limited to the inner ring of the bearing.

[0025] Specifically, the matching relationship between the limiting short shaft and the bearing can be achieved using a clearance fit, which facilitates quick assembly and disassembly. The slot structure can be designed as a U-shaped groove or a semi-circular groove. The bearing inner ring can be limited by the limiting short shaft.

[0026] To address this, the technical solution utilizes a bearing and limiting short shaft combination to achieve stable rotational support for the geomembrane roll. The snap-fit ​​design between the support block and the slot allows for quick assembly and disassembly of the support shaft, facilitating the replacement of geomembrane rolls of different specifications. The bearing inner ring limiting structure effectively prevents axial displacement of the support shaft, ensuring stability during laying. Compared to manual laying methods, this mechanical structure significantly reduces labor intensity, while standardized connection methods ensure consistent construction quality. In practice, the bearing specifications can be adjusted to meet different load-bearing requirements, and the slot depth can be optimized based on the material weight.

[0027] Furthermore, this application also proposes that the support shaft includes a bushing and an internally inserted sliding shaft.

[0028] Specifically, the bushing is a hollow tubular structure with a guide groove or limiting protrusion on the inner wall, and a matching guide strip or limiting groove on the outer wall of the sliding shaft, so that the sliding shaft can slide axially within the bushing but cannot rotate relative to it.

[0029] Therefore, this technical solution, through its retractable support shaft structure, can adapt to the installation requirements of geomembrane rolls of different widths. When the support length needs to be adjusted, simply pull the sliding shaft to the desired position and then engage the bearings on both sides in the slots for fixation, without replacing the entire support shaft. Compared with the fixed-length support shafts in existing technologies, this not only reduces spare parts inventory pressure but also significantly improves construction efficiency. This design is particularly suitable for construction sites where roll specifications need to be frequently changed, as adaptation can be quickly achieved through simple mechanical adjustments, avoiding the installation difficulties caused by size mismatches in traditional methods.

[0030] Furthermore, this application also proposes that the front end of the end frame be connected to the tractor vehicle via a pull rope.

[0031] The pull rope can be made of flexible connectors with sufficient strength, such as steel wire rope, nylon rope, or synthetic fiber rope. Specifically, one end of the pull rope is connected to the front end of the end frame via a detachable connector such as a hook, shackle, or quick connector, and the other end is connected to the tractor in the same way. As a preferred embodiment, the length of the pull rope is adjustable.

[0032] This technical solution replaces manual traction with a tractor, solving the problems of low efficiency and high labor intensity in existing manual laying techniques. Specifically, the tractor provides stable traction, enabling the laying device to move smoothly and ensuring the continuity and uniformity of geotextile material laying. Compared with manual laying, mechanized traction significantly improves construction efficiency while avoiding laying quality problems caused by uneven manpower. The adjustable-length pull rope design further enhances the adaptability of the traction system, allowing the laying device to adapt to different construction environments and traction distance requirements.

[0033] The implementation principle of a roadbed geosynthetic material laying device according to an embodiment of this application is as follows:

[0034] According to the geomembrane rolls 11 of different widths, first adjust the length of the two end frames 1 and the upper support shaft to adapt to the width of the geomembrane roll 11. During adjustment, simply pull out the pin 5 on the sleeve 2 to adjust the length of the sleeve 2. At the same time, remove the bearing 10 on the support shaft 8, put the geomembrane roll 11 on the support shaft 8, adjust the length of the bushing 81 and sliding shaft 82 of the support shaft 8, install the removed bearing 10 and put it into the corresponding slot 7 to achieve the support of the entire geomembrane roll 11.

[0035] Next, the pull rope 13 is attached to the front end of the end frame 1 and the rear end of the tractor 12. The end of the geomembrane roll 11 is pulled out and laid on the roadbed. One person stands on the end, and the tractor 12 is started to pull the entire device forward. In this way, the geomembrane roll 11 rotates and automatically lays the geomembrane on the road (e.g., Figure 4 As shown in the figure, after the geomembrane is laid, replace it with geomembrane roll 11 for reuse.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A roadbed geosynthetic material laying device, characterized in that: It includes movable end frames (1) on both sides, and the two end frames (1) are connected by adjusting rods on both sides. The upper part of the end frame (1) is provided with a quick-release support shaft (8), and the geomembrane roll (11) is supported on the support shaft (8).

2. The roadbed geosynthetic material laying device according to claim 1, characterized in that: The adjusting rod includes a sleeve (2), a slide rod (3) is slidably connected inside the sleeve (2), and multiple insertion holes (4) are provided on the sleeve (2), with a fixing pin (5) inserted into the insertion hole (4).

3. The roadbed geosynthetic material laying device according to claim 1, characterized in that: The support shaft (8) is provided with limiting short shafts (9) at both ends that match the bearing (10). The limiting short shafts (9) are engaged in the slots (7) opened in the support block (6). The support block (6) is fixed at the top of the end frame (1). The connection between the support shaft (8) and the limiting short shafts (9) is limited to the inner ring of the bearing (10).

4. The roadbed geosynthetic material laying device according to claim 1, characterized in that: The support shaft (8) includes a bushing (81) and a sliding shaft (82) that is inserted into it.

5. The roadbed geosynthetic material laying device according to claim 1, characterized in that: The end frame (1) is connected to the tractor (12) via a pull rope (13) at its front end.

Images