Roadbed splicing construction device and process

Abstract

The application relates to the technical field of roadbed splicing, and particularly discloses a roadbed splicing construction device and process, which comprises a moving frame, and the moving frame is provided with a placing assembly and a fixing assembly; the placing assembly comprises an installation plate rotatably assembled on the moving frame and two groups of clamping pieces for placing geogrid rolls arranged on the installation plate, and the two groups of clamping pieces are symmetrically arranged around the installation plate axis; the fixing assembly is arranged in the laying direction of the geogrid and is spaced from the placing assembly, and U-shaped nails are placed in the fixing assembly; after the moving frame moves to lay the geogrid, the fixing assembly is driven to pass above the geogrid, and the fixing assembly is used for inserting the U-shaped nails into the laid geogrid to fix the geogrid; the roadbed splicing construction device and process have the effect that the geogrid can be uniformly laid.

Description

Technical Field

[0001] This invention relates to the technical field of roadbed splicing, and specifically to a roadbed splicing construction device and process. Background Technology

[0002] When expanding, widening, repairing, or connecting existing roadbeds with other roads, roadbed splicing construction is required. The main function and purpose of roadbed splicing construction is to ensure the integrity, continuity, stability, and durability of the new and old roadbed structures, to tightly connect the newly filled or renovated roadbed with the original roadbed, to form a complete and continuous roadbed whole, to avoid phenomena such as breakage and delamination, and thus to ensure the safe and efficient operation of the road.

[0003] Patent document CN112681043B discloses a roadbed splicing and widening structure and construction method. The method involves using an excavator to cut the existing shoulder slope at the joint, vertically cutting it to the design elevation of the foundation. Then, parallel inner and outer piles are driven at intervals along the original roadbed cross-section. A reverse soil step is constructed on the original roadbed cross-section, steel reinforcement is tied to the transition section between the old and new roadbeds, formwork is erected, and concrete is poured to form the transition section. The roadbed fill material is backfilled and compacted in layers to form a backfill compaction layer. Once the height of the backfill compaction layer reaches the top of the permeable graded layer, it is fixed with U-shaped nails. A geogrid reinforcement layer is laid, and one side of the geogrid reinforcement layer is fixedly connected to the transition section between the old and new roadbeds using anchor nails. Depending on the height of the roadbed, one or more geogrid reinforcement layers are set inside the backfill compaction layer. When the height of the backfill compaction layer reaches the design value, the slope is cut on the side of the roadbed, and the side waterproof layer is laid and overlapped with the bottom waterproof layer. An impermeable layer is constructed on the top surface of the backfill compaction layer and overlapped with the side waterproof layer. Then, the slope is constructed by backfilling on the side of the backfill compaction layer.

[0004] However, this method has the following problems: when laying the geogrid, one end needs to be fixed first, and then the rolled geogrid is gradually unfolded and laid by manual pulling. However, during the manual laying process, adjacent geogrids are prone to misalignment or gaps, which affects the stability of the roadbed after backfilling. Summary of the Invention

[0005] This invention provides a roadbed splicing construction device and process, which aims to solve the problem of misalignment or gaps that easily occur when laying geogrids in related technologies.

[0006] In a first aspect, the present invention provides a roadbed splicing construction device, including a movable frame, on which are provided a placement component and a fixing component; the placement component includes a mounting plate rotatably mounted on the movable frame and two sets of clamping members disposed on the mounting plate for placing geogrid rolls, the two sets of clamping members being symmetrically arranged around the axis of the mounting plate; the fixing component is disposed at intervals from the placement component along the laying direction of the geogrid, and a U-shaped nail is placed inside the fixing component; after the movable frame moves to lay the geogrid, it drives the fixing component to pass over the geogrid, and the fixing component is used to insert the U-shaped nail into the laid geogrid to fix it.

[0007] The effect is that by setting clamps on the mobile frame to place the geogrid, the geogrid is laid along the direction of movement as the frame moves, avoiding deviation. Specifically, the geogrid is placed on the mounting plate using clamps, and then the mobile frame moves in the laying direction, while the geogrid is spread out along the moving direction. Then, as the fixing components pass over the spread geogrid, they secure it, improving its stability. Simultaneously, the overlapping joints of the geogrid are fixed during laying to prevent misalignment, ensuring even distribution and improving the stability of the backfilled roadbed.

[0008] Preferably, the fixing component includes: a horizontally arranged placement frame, a guide frame connected to the placement frame and vertically arranged, a second pusher disposed above the guide frame, and an elastic member. U-shaped nails are arranged horizontally inside the placement frame with their openings facing downwards. The elastic member is disposed inside the placement frame and cooperates with the U-shaped nails to push the U-shaped nails toward the guide frame. The second pusher pushes the U-shaped nails at the guide frame to move downwards to fix the geogrid.

[0009] Its effect is that by setting up elastic elements to push the U-shaped nails in the placement frame to move toward the guide frame, after the geogrid is laid, the moving frame drives the guide frame to move above the geogrid, and the second pushing element drives the U-shaped nails to move downward. The U-shaped nails move downward through the guide frame and are inserted into the ground through the geogrid to fix the geogrid.

[0010] Preferably, the placement frame is provided with a connecting frame for mounting the second pusher, and the movable frame is provided with a drive component, the output end of which is connected to the connecting frame to drive the placement frame to rotate around the guide frame.

[0011] Its effect is that when laying the geogrid longitudinally and overlapping it, the drive unit drives the placement frame to rotate 90 degrees, so that the two ends of the U-shaped nail are placed longitudinally, and the second pusher drives the U-shaped nail to be inserted into the ground to fix the overlap of the two longitudinally arranged geogrids.

[0012] Preferably, the mounting frame has a central groove on its side, and a lever is rotatably mounted on the mounting frame. The lever is positioned near the center of the geogrid, with one end rotatably connected to the mounting frame and the other end extending through the central groove toward the mounting plate. A rotating component is provided at the connection between the lever and the mounting frame. The rotating component is used to rotate the end of the lever near the mounting plate to tilt upwards. When the clamping component is directly above the axis of the mounting plate, it is in the material preparation position; when it is directly below, it is in the laying position. When the clamping component rotates from the material preparation position to the laying position, it drives the geogrid past the lever. The lever engages with the end of the geogrid to unfold the geogrid.

[0013] Its effect is that when the mounting plate rotates, it drives the geogrid from the preparation position to the laying position, and drives the geogrid through the lever. The end of the lever is connected to the end of the geogrid roll, that is, the end of the lever is inserted into the geogrid. When the geogrid rotates to the laying position, it drives the geogrid to unfold so that subsequent laying can be carried out.

[0014] Preferably, the movable frame includes a mounting frame, and a mounting groove is provided on the side of the mounting frame near the clamping member. A guide frame is located in the mounting groove, and the height of the lever is lower than the height of the placement frame. A clearance groove is provided on one side of the guide frame. When the placement frame rotates, causing the clearance groove to rotate to the outside of the mounting groove, one end of the U-shaped nail is located outside the mounting groove. The second pusher causes the U-shaped nail to move downward and cooperate with the geogrid to separate the geogrid from the lever.

[0015] Preferably, the clamping components include: a first pushing member, a clamping plate, and an insert rod. Two sets of the first pushing member, clamping plate, and insert rod are provided and are corresponding to both ends of the geogrid. The first pushing member is provided on the mounting plate, and the output end of the first pushing member is connected to the clamping plate to drive the clamping plate to move along the axis parallel to the mounting plate. The insert rod is provided parallel to the axis of the mounting plate and is used to insert into the middle of the geogrid roll for support.

[0016] Preferably, the output end of the second pusher is provided with a push plate. After the elastic member drives the U-shaped nail to move to the guide frame, the U-shaped nail is located below the push plate. The second pusher drives the push plate to abut against the U-shaped nail so as to drive the U-shaped nail to move downward.

[0017] Preferably, the fixing components are provided in two sets, with the lever located at the center of the two sets of fixing components.

[0018] Preferably, the mounting frame has an arc-shaped groove, which is arc-shaped around the center line of the mounting groove, and a slider is provided at the bottom of the frame, which is slidably assembled in the arc-shaped groove.

[0019] Secondly, the present invention provides a roadbed splicing process, employing the aforementioned roadbed splicing construction device, characterized by comprising the following steps:

[0020] Excavation of steps: First, remove the surface soil of the old embankment slope, and then excavate steps from the toe of the original embankment slope upwards.

[0021] The mobile frame is pushed along the laying direction to lay the geogrid, and at the same time, the geogrid is fixed by U-shaped nails.

[0022] Fill the laid geogrid with soil that meets the requirements to form a roadbed structure layer;

[0023] Compaction machinery is used to mechanically compact the filled soil.

[0024] Its effect is that by setting up a roadbed splicing construction device, the geogrid is evenly laid in the designated position during the laying process, which improves the overall stability after backfilling.

[0025] Beneficial effects:

[0026] This invention places the geogrid on a movable frame, which moves to unfold the geogrid, allowing it to be laid along the direction of movement. Only the movement trajectory of the frame needs to be controlled during the process. After laying, a second pusher drives U-shaped nails through the geogrid and inserts them into the ground, thus fixing the geogrid and preventing misalignment. This ensures the geogrid is evenly laid in the designated location, improving the stability of the backfilled roadbed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a top view of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure in which the components are placed in this invention.

[0030] Figure 4 This is a schematic diagram showing the positional relationship between the placement component and the fixing component in this invention.

[0031] Figure 5 yes Figure 4 A schematic diagram of the structure at point A in the middle.

[0032] Figure 6 This is a schematic diagram of the lever structure in this invention.

[0033] Figure 7 This is a partially exploded view of the placement frame and the mounting frame in this invention.

[0034] Figure 8 This is a schematic diagram of the structure of the fixing component in this invention.

[0035] Figure 9 This is a schematic diagram of the state when the placement frame is rotated to the connecting position in this invention.

[0036] Figure 10 This is a partially exploded view of the U-shaped nail and the mounting frame when the frame is in place in this invention.

[0037] Figure label:

[0038] 01. U-shaped nail; 1. Moving frame; 11. Moving wheel; 2. Placement component; 21. Mounting plate; 211. Intermediate rod; 22. Clamping component; 221. First pusher; 222. Clamping plate; 223. Insert rod; 3. Fixing component; 31. Placement frame; 311. Slide plate; 32. Guide frame; 321. Clearance groove; 33. Second pusher; 34. Elastic component; 4. Mounting frame; 41. Mounting groove; 42. Intermediate groove; 5. Connecting frame; 6. Driving component; 7. Toggle lever; 71. Rotating component; 8. Push plate; 9. Arc groove; 91. Slider. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] This invention discloses a roadbed splicing construction device.

[0041] Reference Figures 1 to 10 The roadbed splicing construction device includes a mobile frame 1 and mobile wheels 11 mounted on the mobile frame 1. The mobile wheels 11 are rotatably mounted on the mobile frame 1, allowing the mobile frame 1 to move on the ground via the mobile wheels 11. A placement component 2 and a fixing component 3 are provided on the mobile frame 1. The mobile frame 1 moves the geogrid via the placement component 2, simultaneously laying the geogrid in the designated position, and then the fixing component 3 fixes the laid geogrid.

[0042] Reference Figure 1 , Figure 2 , Figure 3 The placement component 2 includes: a mounting plate 21 and clamping members 22. The mounting plate 21 is rotatably mounted on the movable frame 1. There are two mounting plates 21, located at opposite ends of the geogrid. A central rod 211 is coaxially arranged between the two mounting plates 21 to allow them to rotate synchronously. The clamping members 22 are mounted on the mounting plate 21, and there are two sets of clamping members 22 symmetrically arranged around the central rod 211 on the mounting plate 21.

[0043] Reference Figure 1 , Figure 4The fixing component 3 and the placement component 2 are spaced apart along the laying direction of the geogrid, with the fixing component 3 positioned on the side of the placement component 2 opposite to the laying direction. This allows the fixing component 3 to move over the laid geogrid as the moving frame 1 moves after the placement component 2 has laid the geogrid at the designated location. A U-shaped nail 01 is placed inside the fixing component 3. During the laying of the geogrid, the fixing component 3 moves the U-shaped nail 01 through the geogrid and inserts it into the ground to fix it in place.

[0044] The geogrid roll is placed on the mounting plate 21 using the clamp 22, and then the moving frame 1 is pushed along the laying direction, with the center line of the geogrid perpendicular to the moving direction of the moving frame 1. During laying, one end of the geogrid is fixed to the ground. As the moving frame 1 moves, the geogrid rotates and unfolds, laying it flat on the ground. Then, the fixing component 3 drives the U-shaped nails 01 through the geogrid and inserts them into the ground to fix the laid geogrid.

[0045] Reference Figure 1 , Figure 2 , Figure 3 The clamping component 22 includes: a first pushing component 221, a clamping plate 222, and a insert rod 223. The first pushing component 221 is configured as a cylinder. The clamping plate 222 is disposed on the side of the mounting plate 21 near the other mounting plate 21 and is located at the output end of the first pushing component 221. The first pushing component 221 is used to drive the clamping plate 222 to move in a direction parallel to the intermediate rod 211. The insert rod 223 is disposed on the side of the clamping plate 222 away from the first pushing component 221 and is also parallel to the intermediate rod 211. Two sets of the first pushing component 221, clamping plate 222, and insert rod 223 are provided, and the two sets of the first pushing component 221, clamping plate 222, and insert rod 223 are respectively disposed on the two mounting plates 21.

[0046] When placing the geogrid roll, align the center of the geogrid roll with the insertion rod 223. Then, the first pushing member 221 moves the clamping plate 222 and the insertion rod 223, inserting the insertion rod 223 into the center of the geogrid roll until the clamping plate 222 abuts against the end of the geogrid roll. Additionally, to facilitate the unfolding of the geogrid roll when the moving frame 1 moves, the clamping plate 222 can be rotatably engaged with the output end of the first pushing member 221. As the moving frame 1 moves, the clamping plate 222 can rotate accordingly to reduce the friction on the geogrid roll, facilitating its rotation and unfolding for laying.

[0047] Reference Figure 4Two sets of clamping members 22 are placed vertically on the mounting plate 21, with the middle rod 211 positioned in the middle of the two sets of clamping members 22. The clamping member 22 located directly above the middle rod 211 is in the material preparation position, where a spare geogrid is placed. The clamping member 22 located directly below the middle rod 211 is in the laying position, where a geogrid being laid is placed.

[0048] During installation, the geogrid at the installation position is placed close to the ground, and the geogrid is laid as the moving frame 1 moves. After the geogrid at the installation position is used up, the mounting plate 21 is rotated 180 degrees to switch the positions of the two sets of clamps 22, and the geogrid at the preparation position is rotated to the installation position for re-installation. At the same time, the other clamp 22 is rotated to the preparation position, and then the spare geogrid is placed in the preparation position for use during the next replacement.

[0049] In this embodiment, the position of the clamping member 22 is adjusted by manually rotating the mounting plate 21. Alternatively, a pin can be used to engage the rotating shaft of the mounting plate 21 with the movable frame 1, fixing the position of the mounting plate 21 after rotation. In other embodiments, a motor or other drive source can be connected to the mounting plate 21 to rotate it, enabling the clamping member 22 to switch between the material preparation position and the laying position.

[0050] Reference Figure 1 , Figure 4 , Figure 7 , Figure 8 The fixing component 3 includes: a placement frame 31, a guide frame 32, a second pusher 33, and an elastic member 34. The placement frame 31 is horizontally positioned, and the guide frame 32 is vertically positioned at one end of the placement frame 31, with the interior of the guide frame 32 communicating with the interior of the placement frame 31. The second pusher 33 is positioned above the guide frame 32 and the placement frame 31, with its output end pointing downwards. The elastic member 34 is positioned inside the placement frame 31. Multiple U-shaped nails 01 are arranged inside the placement frame 31, with the U-shaped nails 01 arranged in a direction toward the guide frame 32 and their openings pointing downwards. The elastic member 34 cooperates with the U-shaped nails 01 to push the U-shaped nails 01 to move in a direction toward the guide frame 32.

[0051] The elastic element 34 moves the U-shaped nail 01 to one end of the placement frame 31 near the guide frame 32, that is, the U-shaped nail 01 is located above the guide frame 32. Then, the output end of the second pusher 33 pushes the U-shaped nail 01 downward, so that the U-shaped nail 01 separates from the placement frame 31 and enters the guide frame 32. Finally, it is inserted into the ground through the guide frame 32 to fix the geogrid.

[0052] Reference Figure 7 , Figure 8 A push plate 8 is provided at the output end of the second pusher 33. The width of the push plate 8 matches that of the U-shaped nail 01. The second pusher 33 is configured as a cylinder, that is, the push plate 8 is connected to the piston rod of the cylinder. The second pusher 33 is used to drive the push plate 8 to move up and down reciprocally.

[0053] Initially, the push plate 8 is positioned above the placement frame 31, meaning it is located on the side of the placement frame 31 facing away from the guide frame 32, and the push plate 8 corresponds to the upper end of the guide frame 32. After the elastic member 34 moves the U-shaped nail 01 above the guide frame 32, the second pushing member 33 moves the push plate 8 downward, causing the push plate 8 to abut against the U-shaped nail 01, thus pushing the U-shaped nail 01 through the guide frame 32 and inserting it into the ground.

[0054] Reference Figure 7 , Figure 8 A slide plate 311 is slidably disposed within the placement frame 31, sliding along the length of the placement frame 31. An elastic element 34 is disposed on the side of the slide plate 311 away from the U-shaped nail 01. The elastic element 34 is a spring, with one end connected to the inner wall of the placement frame 31 and the other end connected to the slide plate 311. The elastic element 34 is used to drive the slide plate 311 to move towards the guide frame 32. That is, the elastic element 34 drives the U-shaped nail 01 to move closer to the guide frame 32 via the slide plate 311, so that the U-shaped nail 01 is arranged and placed within the placement frame 31. With the cooperation of the second pusher 33, the U-shaped nail 01 can be continuously pushed to the ground for insertion.

[0055] A sensor and a controller are installed on the mobile frame 1. The sensor is used to detect the moving distance of the mobile frame 1 and has the function of accurately detecting the moving distance of the mobile frame 1. In this embodiment, a laser rangefinder sensor is selected as the sensor. The controller is responsible for receiving the moving distance signal sent by the sensor and processing, comparing and judging the signal according to a preset logic program. The controller can store at least one target moving distance threshold and compare the current moving distance detected by the sensor with the target moving distance threshold in real time. The sensor is electrically connected to the signal receiving end of the controller, and the control end of the controller is electrically connected to the switch of the second pusher 33, that is, the start and stop of the second pusher 33 are controlled by the controller issuing commands.

[0056] When the controller detects that the moving distance of the mobile frame 1 has reached the preset target moving distance threshold, the controller will immediately send a working trigger signal to the second pusher 33, causing the second pusher 33 to start and push the U-shaped nail 01 into the ground. By setting a sensor to detect the moving distance of the mobile frame 1, the second pusher 33 can be activated to insert the U-shaped nail 01 into the ground after the mobile frame 1 has moved to the specified distance, so that the U-shaped nail 01 is evenly distributed with the laying of the geogrid, so that the geogrid is evenly stressed.

[0057] When laying geogrid, it is laid out roll by roll. Specifically, the geogrid is laid longitudinally along the length of the roadbed. When a new roll of geogrid needs to be spliced ​​with the previous roll, the end of the previous roll needs to overlap the beginning of the next roll. Similarly, if the roadbed width is greater than the width of the geogrid and transverse laying is required, two transversely adjacent geogrids also need to be overlapped during laying. To ensure even stress distribution, when overlapping, the later roll of geogrid should be on top of the previous roll, meaning there is overlap at the joint of the two geogrids. Furthermore, when laying the geogrid, U-shaped nails (01) need to be used at the edges or overlaps of the geogrid. Specifically, the U-shaped nails (01) are inserted into the ground after passing through the geogrid to secure it.

[0058] Reference Figure 7 , Figure 8 A connecting frame 5 is provided on the placement frame 31, a second pusher 33 is provided on the connecting frame 5, and a drive member 6 is provided on the moving frame 1. The drive member 6 is located above the connecting frame 5 and is a motor. The output end of the drive member 6 is connected to the connecting frame 5. The drive member 6 is used to drive the placement frame 31 to rotate around the guide frame 32.

[0059] Reference Figure 7 , Figure 9 Initially, the placement frame 31 is positioned along the laying direction of the geogrid, with the two ends of the U-shaped nails 01 arranged laterally. At this time, the second pushing member 33 drives the U-shaped nails 01 laterally through the geogrid and inserts them into the ground, fixing the two sides of the geogrid or two laterally overlapping geogrids. When longitudinal overlapping of the geogrid is required, the driving member 6 drives the placement frame 31 to rotate 90 degrees around the guide frame 32, so that the two ends of the U-shaped nails 01 are arranged longitudinally, fixing the two longitudinally overlapping geogrids when the U-shaped nails 01 are inserted into the ground. This allows the U-shaped nails 01 to be inserted laterally into the ground when laying two adjacent geogrids laterally. Additionally, when laying the geogrid longitudinally, the direction of the U-shaped nails 01 is adjusted to insert them longitudinally into the ground.

[0060] Reference Figure 1 , Figure 4The mobile frame 1 includes a mounting frame 4 for mounting a placement frame 31 and a guide frame 32. The mounting frame 4 is spaced apart from the ground and can pass over the geogrid during its installation. A mounting groove 41 is provided on the side of the mounting frame 4 near the clamping member 22, and the mounting groove 41 is vertically oriented. The guide frame 32 is located within the mounting groove 41. The placement frame 31 is rotatably mounted on the mounting frame 4. An arc-shaped groove 9 is provided on the mounting frame 4, and the arc-shaped groove 9 is curved around the guide frame 32. The placement frame 31 is located above the mounting frame 4. A slider 91 is provided at the bottom of the placement frame 31, and the slider 91 is slidably fitted within the arc-shaped groove 9.

[0061] Reference Figure 7 , Figure 9 When the placement frame 31 slides, it drives the slider 91 to slide within the arc-shaped groove 9, thereby improving the stability of the placement frame 31 when it rotates. At the same time, the angle of the arc-shaped groove 9 is set to 90 degrees. When the placement frame 31 rotates, it drives the slider 91 to move from one end of the arc-shaped groove 9 to the other end, so as to control the rotation angle of the placement frame 31.

[0062] Reference Figure 4 , Figure 5 , Figure 6 A central groove 42 is provided on the side of the mounting frame 4 near the mounting plate 21. A lever 7 is provided on the mounting frame 4. One end of the lever 7 is rotatably connected to the mounting frame 4, and the other end extends through the central groove 42 to the side of the mounting frame 4 near the mounting plate 21, with the lever 7 corresponding to the center of the two mounting plates 21. A rotating component 71 is provided at the connection between the lever 7 and the mounting frame 4. The rotating component 71 is a torsion spring, and the end of the torsion spring is connected to the lever 7. The rotating component 71 is used to drive the end of the lever 7 near the mounting plate 21 to rotate upward, so that in the initial state, the end of the lever 7 near the mounting plate 21 is in an upward tilted state.

[0063] When the clamping member 22 rotates from the preparation position to the laying position, it will drive the geogrid through the lever 7. When passing the lever 7, the lever 7 will be inserted into the hole in the geogrid, so that the lever 7 is connected to the end of the geogrid. When the geogrid rotates to the laying position, the geogrid will be rolled up and unrolled for subsequent laying.

[0064] To facilitate the separation of the geogrid from the lever 7 after it is rotated to the laying position, the lever 7 is positioned such that, when tilted, the end near the mounting plate 21 is lower than the height of the placement frame 31. A clearance groove 321 is provided on one side of the guide frame 32.

[0065] Reference Figure 7 , Figure 9 , Figure 10Initially, the placement frame 31 is set along the laying direction of the geogrid. When replacing the geogrid roll, the lever 7 engages with the end of the geogrid roll, and the drive component 6 rotates the placement frame 31 90 degrees, simultaneously rotating the clearance groove 321 to the outside of the mounting groove 41. At this time, the two ends of the U-shaped nail 01 are placed longitudinally, that is, one end of the U-shaped nail 01 corresponds to the mounting groove 41, and the other end is located above the lever 7. Then, the second pusher 33 drives the U-shaped nail 01 to move downward. When the U-shaped nail 01 moves, it contacts the end of the geogrid and applies a downward force to the geogrid. At the same time, the lever 7 is rotated through the geogrid until the geogrid separates from the lever 7. Finally, the U-shaped nail 01 is inserted into the ground to fix the geogrid. After the geogrid separates from the lever 7, the rotating component 71 drives the lever 7 to rotate upward back to the initial state, so as to assist in unfolding it when replacing the geogrid next time.

[0066] Two sets of fixing components 3 are provided, with the lever 7 located between the two sets of fixing components 3. The two sets of second pushing components 33 are activated simultaneously, driving the two U-shaped nails 01 to cooperate with the geogrid, so that the geogrid is evenly stressed, so that it can be laid flat on the ground after separating from the lever 7, thus improving the laying effect of the geogrid.

[0067] The implementation principle of this invention is as follows: The geogrid roll is fixed between two mounting plates 21 by clamping member 22. Then, the moving frame 1 is pushed along the laying direction. As the geogrid is laid, the moving frame 1 drives the mounting frame 4 to move above the laid geogrid. After moving to a specified distance, the second pushing member 33 drives the pushing plate 8 to move downward. The pushing plate 8 inserts the U-shaped nail 01 in the placement frame 31 into the ground through the guide frame 32. When the U-shaped nail 01 is inserted into the ground, it passes through the geogrid and fixes the geogrid. After laying is completed, the mounting plate 21 is manually rotated to rotate the geogrid in the preparation position to the laying position, and the laying is carried out again.

[0068] By placing the geogrid roll on the movable frame 1, the geogrid roll is unfolded as it moves with the movable frame 1, allowing the geogrid to be laid along its moving direction. At the same time, the second pusher 33 drives the U-shaped nail 01 through the geogrid and inserts it into the ground to fix the geogrid, reducing the occurrence of misalignment or gaps between two adjacent geogrids during laying, and ensuring that the geogrid is evenly distributed to improve the stability of the roadbed after backfilling.

[0069] The present invention also discloses a roadbed splicing process, which uses the above-mentioned roadbed splicing construction device.

[0070] A roadbed splicing process, with the following construction sequence: removing topsoil from the roadbed slope, excavating steps, backfilling, compacting layer by layer, staged rolling reinforcement, laying geogrid, backfilling, and compacting layer by layer. Specifically, it includes the following steps:

[0071] S1, Excavation of steps: First, remove the topsoil of the old embankment slope, removing 30cm of topsoil. Then, excavate steps from the toe of the original embankment slope upwards, with a step height of 100cm and a width of 110cm.

[0072] S2, push the movable frame 1 along the laying direction to lay the geogrid, and at the same time fix the geogrid with U-shaped nails 01;

[0073] S3 involves filling the laid geogrid with suitable soil material to form the subgrade structure layer. The soil material selected is well-graded, with moderate moisture content and suitable particle size. Commonly used materials include gravelly soil, crushed stone soil, and improved clay soil.

[0074] S4. Compaction machinery mechanically compacts the filled soil, improving its density, strength, and stability. Specifically, normal rolling is performed first, followed by reinforcement compaction using a hydraulic dynamic compactor. This eliminates the compressive deformation of the embankment itself, controlling post-construction settlement of the roadbed.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A roadbed splicing construction device comprising a moving frame, characterized by, The mobile frame is provided with a placing assembly and a fixing assembly. The placing assembly comprises a mounting plate rotatably assembled on the mobile frame, and two groups of clamping pieces arranged on the mounting plate for placing geogrid rolls, and the two groups of clamping pieces are symmetrically arranged around the axis of the mounting plate. The fixing assembly is arranged in the interval of the placing assembly along the laying direction of the geogrid, and the fixing assembly is provided with U-shaped nails. After the mobile frame moves to lay the geogrid, the fixing assembly passes above the geogrid, and the fixing assembly is used for inserting the U-shaped nails into the laid geogrid to fix the geogrid. The fixing assembly comprises a horizontally arranged placing frame, a vertically arranged guide frame communicated with the placing frame, a second pushing piece arranged above the guide frame, and an elastic piece. The U-shaped nails are horizontally arranged in the placing frame and open downward. The elastic piece is arranged in the placing frame and cooperates with the U-shaped nails to push the U-shaped nails to move towards the guide frame. The second pushing piece pushes the U-shaped nails at the guide frame to move downward to fix the geogrid. The placing frame is provided with a connecting frame for mounting the second pushing piece. The mobile frame is provided with a driving piece. The output end of the driving piece is connected with the connecting frame to drive the placing frame to rotate around the guide frame. The clamping piece comprises a first pushing piece, a clamping plate, and a plug rod. The first pushing piece, the clamping plate, and the plug rod are provided with two groups and are correspondingly arranged at two ends of the geogrid. The first pushing piece is arranged on the mounting plate. The output end of the first pushing piece is connected with the clamping plate to drive the clamping plate to move along the axis direction parallel to the mounting plate. The plug rod is arranged parallel to the axis of the mounting plate. The plug rod is used for inserting into the middle of the geogrid roll to support the geogrid roll.

2. The subgrade splicing apparatus according to claim 1, characterized by A middle groove is formed in the side of the mounting frame. A push rod is rotatably arranged on the mounting frame. The push rod is arranged close to the center of the geogrid. One end of the push rod is rotatably connected with the mounting frame. The other end of the push rod extends towards the mounting plate through the middle groove. A rotating piece is arranged at the connection between the push rod and the mounting frame. The rotating piece is used for driving the end of the push rod close to the mounting plate to rotate upwardly. The clamping piece is in a standby position when it is located directly above the axis of the mounting plate and is in a laying position when it is located directly below the axis of the mounting plate. When the clamping piece rotates from the standby position to the laying position, the geogrid passes the push rod. The push rod cooperates with the end of the geogrid to unfold the geogrid.

3. The apparatus according to claim 2, wherein The mobile frame comprises a mounting frame. The side of the mounting frame close to the clamping piece is provided with a mounting groove. The guide frame is located in the mounting groove. The height of the push rod is lower than the height of the placing frame. One side of the guide frame is provided with a clearance groove. When the placing frame drives the clearance groove to rotate to the outside of the mounting groove, one end of the U-shaped nail is located outside the mounting groove. The second pushing piece drives the U-shaped nail to move downward to cooperate with the geogrid to separate the geogrid from the push rod.

4. The subgrade splicing apparatus according to claim 1, wherein The output end of the second pushing piece is provided with a push plate. After the elastic piece drives the U-shaped nail to move to the guide frame, the U-shaped nail is located below the push plate. The second pushing piece drives the push plate to abut against the U-shaped nail to drive the U-shaped nail to move downward.

5. The apparatus according to claim 3, wherein The fixing assembly is provided with two groups. The push rod is located at the center of the two groups of fixing assemblies.

6. The subgrade splicing apparatus of claim 1, wherein An arc-shaped groove is formed in the mounting frame. The arc-shaped groove is arc-shaped around the center line of the mounting groove. The bottom of the placing frame is provided with a sliding block. The sliding block is slidably assembled in the arc-shaped groove.

7. A roadbed splicing process using the roadbed splicing construction apparatus according to claim 1, characterized by, The method comprises the following steps: Excavate steps: first remove the old embankment slope surface soil, and then excavate steps from the embankment toe upward; Push the moving frame along the laying direction to move, and the moving of the moving frame lays the geogrid, and the geogrid is fixed through the U-shaped nails; Fill the required soil material on the laid geogrid to form a roadbed structure layer; The filled soil material is mechanically compacted by a compaction machine.

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