New and old roadbed connection treatment enhancing device and construction method
By integrating rollers and spraying systems, the problems of compaction and material penetration at the junction of new and old roadbeds were solved, achieving uniform compaction and material penetration, reducing construction costs and improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-04-03
AI Technical Summary
Existing technologies make it difficult to achieve uniform compaction and material penetration at the junction of new and old roadbeds, resulting in high construction costs, low efficiency, and difficulty in ensuring synchronicity and uniformity.
A new roadbed connection reinforcement device is adopted, which integrates a roller and a spraying system. It uses centrifugal force vibration to compact the material by using a biased fan-shaped block, and at the same time uses a material box and a spraying system to achieve uniform spraying of the material.
It improved the compaction at the junction of the old and new roadbeds, increased construction efficiency, reduced construction costs, and improved construction quality.
Smart Images
Figure CN121781499A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of roadbed connection devices, specifically a device and construction method for enhancing the connection between new and old roadbeds. Background Technology
[0002] In highway construction, the junction between new and old roadbeds is a weak point in the roadbed structure. Due to differences in settlement rate and compaction degree between the new and old roadbeds, cracks and differential settlement are prone to occur after long-term operation, seriously affecting the road's performance and service life.
[0003] Currently, conventional methods for the joint treatment of new and old roadbeds mainly include excavating steps, laying geogrids, and layered compaction. However, these methods have many shortcomings. Simple mechanical compaction is difficult to achieve uniform compaction at the joint between the new and old roadbeds, especially in the deeper layers of the roadbed, where the compaction effect is poor, and the reinforcing material cannot penetrate evenly into the roadbed interior, resulting in limited roadbed reinforcement. Multiple machines are required to work together, which not only increases construction costs but also reduces construction efficiency. Furthermore, when multiple machines work together, it is difficult to ensure the synchronization and uniformity of compaction and spraying, further affecting the treatment quality at the joint between the new and old roadbeds. Therefore, a reinforcement device and construction method for the joint treatment of new and old roadbeds are proposed to solve the above problems. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a new and old roadbed connection treatment enhancement device, including a connecting bend frame, a connecting turntable fixedly connected to the inner wall of the lower section of the connecting bend frame, a fixed rotating block rotatably connected to the inner outer wall of the connecting turntable, a locking screw fixedly connected to the outer wall of one inner end of the fixed rotating block, a central rod threadedly connected to the outer wall of the locking screw, a roller sleeved on the outer wall of the central rod, annular limiting strips fixedly connected to the inner walls of both sides of the roller, annular fixing rings fixedly connected to the outer wall of one inner end of the annular limiting strips, a connecting rod fixedly connected to the outer wall of the central rod, a fixing ring fixedly connected to the outer wall of the connecting rod, and a bias-weighted fan-shaped block fixedly connected to the outer wall of the fixing ring.
[0006] In a preferred embodiment, a limiting slide cylinder is fixedly connected to the inner wall of the annular fixing ring, a connecting spring is fixedly connected to the bottom of the inner wall of the limiting slide cylinder, a limiting insert is fixedly connected to one bottom end of the connecting spring, a connecting side plate is sleeved on the outer wall of the limiting insert, a sleeve is sleeved on the inner wall of the annular groove opened on the inner side of the connecting side plate, a connecting screw is rotatably connected to the inner wall of the connecting side plate, a screw cap is fixedly connected to the outer end of the connecting screw, and a fixing block is threadedly connected to the outer wall of the middle section of the connecting screw.
[0007] In a preferred embodiment, a crossbeam is fixedly connected to the front and rear ends of the connecting turntable, a material box is fixedly connected to one end of the inner side of the connecting curved frame, a top plate is fixedly installed on the top of the material box, a sealing plate is fixedly installed on the inner wall of the middle section of the top plate, a hopper is connected to the top of the sealing plate, an end cap is plugged into the top of the hopper, a pump pipe is connected to the front and rear ends of the top plate, and a spray nozzle is connected to the bottom end of the end cap.
[0008] In a preferred embodiment, the connecting bend is configured as an inverted L-shape, and a side plate is sleeved on the outer wall of the outer section of the central rod; the side plate is sleeved on the outer wall of the outer section of the central rod, and a roller is sleeved on the outer wall of the central rod; one end of the inner side of the side plate abuts against the outer wall of the outer end of the annular limiting strip, and the fixed rotating block abuts against the outer wall of the outer end of the side plate. This structural design ensures that the roller can rotate stably around the central rod.
[0009] In a preferred embodiment, the fixed ring and the unbalanced sector block are equidistantly arranged at the outer end of the connecting rod, and the unbalanced sector block is circumferentially arranged on the outer wall of the fixed ring at equal intervals; the fixed ring is fixedly connected to the outer wall of the connecting rod, and the unbalanced sector block is fixedly connected to the outer wall of the fixed ring; the fixed ring and the unbalanced sector block are equidistantly arranged at the outer end of the connecting rod, and the unbalanced sector block is circumferentially arranged on the outer wall of the fixed ring at equal intervals.
[0010] In a preferred embodiment, the limiting insert is sleeved on the inner wall of the limiting slide cylinder, the connecting side plate is disposed in the inner cavity of the annular fixing ring and sleeved on the outer wall of the connecting rod, the connecting screw, the screw cap and the fixing block are circumferentially equidistant, and the fixing block is fixedly connected to the inner wall of the sleeve.
[0011] In a preferred embodiment, the end cap is connected to the inner wall of the cross frame; a spray nozzle is connected to one end of the bottom of the end cap, and the end cap is connected to the inner wall of the cross frame; the material box is used to store roadbed reinforcement material, and the reinforcement material can enter the material box through the hopper by opening the end cap.
[0012] In a preferred embodiment, one end of the inner side of the side plate abuts against the outer wall of the outer end of the annular limiting strip, and the fixed rotating block abuts against the outer wall of the outer end of the side plate; the abutting relationship between the side plate and the fixed rotating block further enhances the stability of the overall structure.
[0013] A method for using a reinforcement device for the connection between old and new roadbeds includes the following steps: Step 1: Assembly and debugging of the device. Assemble the connecting bend frame, connecting turntable, fixed rotating block, locking screw, central rod, roller and other components according to the structure. Adjust the connection between the central rod and the roller by rotating the locking screw to ensure that all rotating parts operate smoothly. At the same time, check the connectivity of the material box, pump pipe and spray nozzle, and add roadbed reinforcement material into the material box. Step 2: On-site positioning and installation. Hoist the device to the junction of the old and new roadbeds, adjust the position of the connecting bend frame so that the roller is aligned with the junction area of the roadbed to be treated, and adjust the working angle of the roller by rotating the connecting turntable to ensure that the entire junction surface is covered. Step 3: Subgrade reinforcement operation. Start the device, and the roller rolls on the subgrade surface. The internal eccentric sector blocks generate centrifugal force as the roller rotates, vibrating and compacting the subgrade. At the same time, the reinforcement material in the hopper is transported to the spray nozzle through the pump pipe and evenly sprayed on the subgrade joints. During the operation, the position of the fixing block can be adjusted by rotating the connecting screw, thereby adjusting the vibration amplitude of the internal structure of the roller to adapt to different compaction requirements. Step 4: Multiple rounds of operation and inspection. Perform multiple rounds of compaction and spraying operations according to the above steps. After each round of operation, check the compaction degree and material distribution of the roadbed. If there are any local deficiencies, adjust the device parameters and operate again until the strength and stability of the junction between the old and new roadbeds meet the design requirements. Step 5: Disassembly and storage of the device. After the operation is completed, turn off the device and empty the remaining materials in the hopper. Disassemble each part and clean it. After performing maintenance such as rust prevention, store it for future use.
[0014] The beneficial effects of this invention are as follows: 1. This invention uses a biased sector block inside the drum. When the drum rotates, the biased sector block generates centrifugal force to achieve vibration compaction. Compared with traditional simple mechanical compaction, this method can achieve better compaction effect in the deep layers of the roadbed, thereby improving the overall compaction degree at the junction of new and old roadbeds and enhancing the stability of the roadbed.
[0015] 2. This invention utilizes a spraying system composed of a material box, pump pipe, and spray nozzle. While the roller is vibrating and compacting, it can evenly spray reinforcing material onto the roadbed joint, allowing the reinforcing material to penetrate the roadbed more evenly, thereby improving the roadbed reinforcement effect and reducing quality problems caused by uneven material distribution.
[0016] 3. This invention adjusts the position of the fixing block and changes the compression degree of the connecting spring by rotating the nut to drive the connecting screw, thereby adjusting the vibration amplitude inside the roller. It can be flexibly adjusted for areas with different compaction requirements, better meeting the compaction requirements of various complex roadbeds and ensuring construction quality.
[0017] 4. The device of the present invention integrates compaction and spraying functions, eliminating the need for multiple devices to work together. This reduces the difficulty of ensuring the synchronization and uniformity of compaction and spraying when devices work together, not only reducing construction costs but also improving construction efficiency through an integrated operation process. This achieves the effect of saving costs and time while ensuring construction quality. Attached Figure Description
[0018] The invention will now be further described with reference to the accompanying drawings.
[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the oblique side structure of the present invention; Figure 4 This is a schematic diagram of the inclined structure of the present invention; Figure 5 This is a schematic diagram of the annular fixing ring structure of the present invention; Figure 6 This is a schematic diagram of the side-mounted structure of the present invention; Figure 7 This is the invention Figure 6 Enlarged structural diagram at point A in the middle.
[0020] In the diagram: 1. Connecting bend frame; 2. Connecting turntable; 3. Horizontal frame; 4. Fixed rotating block; 5. Locking screw; 6. Central rod; 7. Side plate; 8. Roller; 9. Annular limiting strip; 10. Annular fixing ring; 11. Limiting slide cylinder; 12. Connecting spring; 13. Limiting insert; 14. Connecting side plate; 15. Connecting screw; 16. Rotary cap; 17. Fixing block; 18. Sleeve; 19. Connecting rod; 20. Fixing ring; 21. Unevenly weighted sector block; 22. Material box; 23. Top plate; 24. Sealing plate; 25. Discharge hopper; 26. End cover; 27. Pump pipe; 28. Spray nozzle. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0022] like Figure 1-7 As shown in the figure, the specific steps of the reinforcement device and construction method for the connection treatment of old and new roadbeds according to an embodiment of the present invention are as follows: Step 1: Assembly and debugging of the device. First, fix the connecting turntable 2 to the inner wall of the lower section of the connecting bend frame 1. Then, embed the fixing block 4 into the rotating groove on the inner side of the outer wall of the connecting turntable 2 to ensure that it rotates flexibly. Screw the locking screw 5 into the threaded hole at one end of the inner side of the fixing block 4. Then, thread the central rod 6 to the outer wall of the locking screw 5. Next, fit the roller 8 onto the outer wall of the central rod 6. Adjust the position of the central rod 6 in the roller 8 by rotating the locking screw 5 so that the roller 8 can rotate stably with the central rod. Install the annular limiting strip 9 and the annular fixing ring 10 on the inner walls of both sides of the roller 8. After assembling the connecting rod 19, the fixing ring 20, and the eccentric sector block 21, fix them to the outer wall of the central rod 6 to ensure that the eccentric sector block 21 is evenly distributed around its circumference. Assemble the relevant components of the connecting side plate 14: Fix the limiting slide cylinder 11 to the inner wall of the annular fixing ring 10, install the connecting spring 12 at the bottom of the inner wall of the limiting slide cylinder 11, and fit the limiting insert 13 into the inner wall of the limiting slide cylinder 11 and connect it to the bottom of the connecting spring 12. Then fit the connecting side plate 14 onto the outer wall of the limiting insert 13, and at the same time fit the sleeve 18 into the annular groove on the inner side of the connecting side plate 14. Finally, pass the connecting screw 15 through the threaded hole in the inner wall of the connecting side plate 14, thread the fixing block 17 into the middle section of the connecting screw 15, and fix the screw cap 16 to the outer end of the connecting screw 15. Fix the material box 22 to one end of the inner side of the connecting bend frame 1. The top plate 23, sealing plate 24, hopper 25, and end cover 26 are installed on the top of the material box 22 in sequence. The pump pipe 27 is connected to the front and rear ends of the top plate 23, and the spray nozzle 28 is connected to the bottom of the end cover 26 and fixed to the inner wall of the cross frame 3. Manually rotate the connecting turntable 2 and the central rod 6 to check whether the rotation of the roller 8 and the internal eccentric sector block 21 is smooth and without any jamming. Test the material supply system of the material box 22: inject an appropriate amount of clean water into the material box 22, start the material supply pump, and observe whether the clean water can be sprayed evenly from the spray nozzle 28. Check whether there is any leakage or blockage in the pump pipe 27 and the spray nozzle 28. After the test is completed, drain the clean water. Rotate the connecting screw 15 and observe the movement of the fixing block 17 to confirm that it can drive the sleeve 18 and the internal structure adjustment, thereby changing the vibration effect of the eccentric sector block 21 to meet the preview requirements of different compaction strengths. Step Two: On-site Positioning and Installation. Conduct a site survey at the junction of the old and new roadbeds, marking the area to be treated, measuring its length, width, and depth, and planning the device's route and operating area to ensure no obstacles affect its operation. Use lifting equipment to hoist the assembled and debugged device to the designated starting position at the junction of the old and new roadbeds, ensuring the bottom support or connecting structure of the connecting bend frame 1 is stably placed on a flat area beside the roadbed. Adjust the position of the connecting bend frame 1 so that the centerline of the roller 8 is parallel to the junction line of the old and new roadbeds or at a specific angle according to design requirements. Use the 360° rotation function of the connecting turntable 2 to fine-tune the operating angle of the roller 8, ensuring its initial operating surface completely covers the edge of the junction area. Use a level and measuring tape to calibrate the device's levelness and positional accuracy, ensuring the roller 8 can evenly compact and spray materials during operation, avoiding uneven treatment results due to positional deviations. Step 3: Subgrade reinforcement operation. Based on the subgrade soil type, moisture content, and design compaction requirements, set the rotation speed and vibration amplitude of roller 8: Adjust the fixing block 17 to a suitable position by rotating the connecting screw 15, ensuring the vibration amplitude of the eccentric sector block 21 is at a moderate level. This can be adjusted based on experience or trial operation results. Simultaneously, set the feeding speed of the material box 22 to ensure the spray volume of the spray nozzle 28 meets the material usage requirements per unit area. Start the device's power system, causing the central rod 6 to drive roller 8 to rotate. The eccentric sector block 21 inside roller 8 generates centrifugal force as roller 8 rotates, vibrating and compacting the soil at the junction of the old and new subgrades, reducing the voids between particles and increasing density. Under the action of the feed pump, the subgrade reinforcement material in box 22 is transported through pump pipe 27 to spray nozzle 28 and evenly sprayed on the subgrade connection area being compacted, so that the reinforcement material is fully mixed with the soil. During the operation, a dedicated person is assigned to monitor the vibration of roller 8, the uniformity of spraying, and the changes on the subgrade surface. If the compaction degree of a certain area is found to be insufficient, the angle of the connecting turntable 2 can be adjusted so that roller 8 stays in that area longer or repeats the rolling. If the amount of sprayed material is too much or too little, the feeding speed of box 22 is adjusted in time. If it is necessary to change the vibration intensity to adapt to the compaction requirements of different depths, the position of the fixing block 17 can be adjusted by rotating the connecting screw 15 again, thereby changing the vibration amplitude of the biased sector block 21. Step Four: Multiple Rounds of Operation and Inspection. After completing the first round of operation, move the device to the next work section and perform the second round of operation using the same parameter settings. Ensure that each area at the junction of the new and old roadbeds undergoes at least two rounds of vibration compaction and spraying. For special areas such as roadbed edges and corners, the device position can be manually adjusted for targeted supplementary operations. After each round of operation, use a compaction testing device to test different locations at the junction of the new and old roadbeds, record the test data, and determine whether the compaction meets the design requirements. Observe the distribution of the roadbed surface reinforcement material and check for any material accumulation or omissions. If there is accumulation, it can be evenly distributed through subsequent rolling of roller 8. If there are omissions, mark the area and focus on supplementing spraying in subsequent operations. Based on the results of compaction testing and material distribution inspection, the operating parameters of the device are optimized: if the compaction is generally insufficient, the vibration amplitude of the roller 8 can be increased, the connecting screw 15 can be adjusted to move the fixed block 17, the vibration effect of the biased sector block 21 can be changed, and the operation time can be extended; if the material distribution is uneven, the angle of the spray nozzle 28 or the feeding speed of the material box 22 can be adjusted; after optimizing the parameters, the unqualified areas are reworked until all test indicators meet the design requirements. Step 5: Disassembly and Storage of the Device. Turn off the power and feeding systems of the device. After the drum 8 stops rotating, discharge the remaining reinforcing material from the hopper 22 through the discharge hopper 25 or a dedicated discharge port. Rinse the hopper 22, pump pipe 27, and spray nozzle 28 with clean water to ensure no material residue remains inside, preventing blockage and corrosion. Disassemble the components in the reverse order of assembly: first remove the hopper 22 and related feeding components, then disassemble the connection between the drum 8 and the central rod 6. Loosen the locking screw 5 and disassemble the drum 8, central rod 6, connecting turntable 2, and other components one by one. Clean the surface of each component with a clean cloth or brush to remove dirt and material residue. Apply rust prevention treatment to metal components such as the locking screw 5 and central rod 6. Check each component for wear, deformation, etc. Repair or replace any damaged parts promptly. Store the disassembled, cleaned, and maintained components in a dedicated storage box or warehouse according to type and size, clearly labeling them for quick retrieval and reassembly next time. Example 1: Application of Urban Road New and Old Roadbed Connection Project I. Project Background In a road widening project in a certain city, the length of the connection section between the old and new roadbeds is 30m. The roadbed type is silty clay, the design compaction degree is ≥95%, and a polymer roadbed reinforcing agent is used as the reinforcing material.
[0023] II. Equipment Adaptation and Construction Device adjustment: Adjust the vibration amplitude of the biased sector block 21 inside the roller 8 to a medium-low level by rotating the connecting screw 15 to adjust the position of the fixing block 17 to adapt to the compaction characteristics of silty clay; adjust the volume of the material box 22 to 500L to meet the needs of short-section operation on urban roads.
[0024] Construction process: Assembly and debugging: Quickly assemble and test the device, focusing on checking the atomization effect of the spray nozzle 28 on the polymer reinforcing agent to ensure uniform material spraying.
[0025] On-site operation: Use the connecting turntable 2 to adjust the angle of the roller 8 so that the device operates longitudinally along the connection line between the new and old roadbeds. The operating speed is controlled at 1.5m / min, and 15L of reinforcing agent is sprayed per meter. During the operation, a compaction check is carried out every 5m.
[0026] Quality control: Due to the good water retention of silty clay, the reinforcing agent penetrates quickly. After only two rounds of operation, the average compaction degree reached 96.2%, which meets the design requirements. Implementation effect
[0027] One year after the connecting section was opened to traffic, there were no cracks or settlements, the road surface was smooth, and the composite structure formed by the polymer reinforcing agent and clay effectively improved the water stability of the roadbed.
[0028] Example 2: Application of high elevation difference connection project between old and new roadbeds in mountainous areas I. Project Background In a mountainous highway reconstruction project, the maximum elevation difference between the old and new roadbeds is 5m. The connecting section is a stepped structure. The roadbed is made of gravelly soil with a design compaction degree of ≥94%. Cement grout is used as a reinforcing material.
[0029] II. Equipment Adaptation and Construction Device adjustment: Adjust the vibration amplitude of the biased sector block 21 to a high level to enhance the particle embedding effect of the gravel soil; the material box 22 is equipped with a large-capacity pump pipe 27 to ensure the conveying pressure of cement slurry under high drop.
[0030] Construction process: Multi-angle operation: Utilizing the 360° rotation function of the connecting turntable 2, the horizontal and vertical surfaces of the steps can be operated separately. When the roller 8 is operating on the vertical surface, the central rod 6 is tightened by the locking screw 5 to enhance the rigidity of the device.
[0031] Layered operation: For a 5m drop, compaction spraying is carried out in 3 layers. After each layer is completed, the compaction degree is tested to ensure that the deep gravelly soil also meets the design requirements. The amount of cement slurry sprayed is controlled at 25L per meter to achieve rapid penetration by utilizing the large porosity of the gravelly soil. Implementation effect
[0032] Tests showed that the compaction degree of each layer was ≥94.5%. The cement grout formed a cement structure in the gravelly soil, which effectively solved the problem of uneven settlement of the roadbed in the mountainous area. After the connecting section was opened to traffic, the anti-skid and anti-deformation capabilities were significantly improved.
[0033] Example 3: Application of long-segment connection project between old and new roadbeds in highway reconstruction and expansion I. Project Background In a highway reconstruction and expansion project, the section connecting the old and new roadbeds is 100m long. The roadbed is made of crushed stone and soil with a design compaction degree of ≥96%. Fly ash-lime composite slurry is used as the reinforcing material.
[0034] II. Equipment Adaptation and Construction Device adjustment: The eccentricity of multiple sets of eccentric fan-shaped blocks 21 is adjusted to the maximum to enhance the vibration compaction effect of crushed stone and soil; the material box 22 adopts a double pump pipe 27 design to improve the spraying efficiency to adapt to long-distance operation.
[0035] Construction process Assembly line operation: Connect the device to traction equipment such as engineering vehicles and operate continuously along the connection section at a speed of 3m / min. The amount of composite slurry sprayed is 30L per meter. The uniformity of long-distance transportation is ensured by adjusting the pump pipe pressure.
[0036] Intelligent monitoring: The device is equipped with a real-time compaction monitoring sensor that is compatible with the existing structure. It provides real-time feedback on the compaction status of the roadbed and, combined with manual sampling and sand filling, dynamically adjusts the vibration amplitude and spraying amount. Implementation effect
[0037] The long-section connection project was completed in just 5 days, with an average compaction degree of 97%. The stable structure formed by the composite grout in the crushed stone soil kept the settlement difference between the old and new roadbeds within 3mm, which is far below the standard requirements, thus ensuring the rapid opening of the expressway.
[0038] Working principle: Device structure and assembly principle: The connecting bend frame 1 is set as an inverted L-shape, and the connecting turntable 2 is fixedly connected to the inner wall of its lower section. The connecting bend frame 1 serves to support and connect the various components of the entire device, and its special shape helps the device to be positioned and operated at the junction of the old and new roadbeds. The connecting turntable 2 can realize the multi-angle rotation of the roller 8 in order to adjust the working angle and cover the roadbed junction area at different positions. The inner outer wall of the connecting turntable 2 is rotatably connected to the fixed rotating block 4, and the outer wall of one end of the fixed rotating block 4 is fixedly connected to the locking screw 5. By rotating the locking screw 5, the position of the central rod 6 can be adjusted, thereby adjusting the relative position relationship between the roller 8 and the connecting bend frame 1, ensuring the stability and accuracy of the roller 8 during installation and operation. The locking screw 5 is threadedly connected to a central rod 6. A side plate 7 is sleeved on the outer wall of the outer section of the central rod 6, and a roller 8 is sleeved on the outer wall of the central rod 6. One end of the inner side of the side plate 7 abuts against the outer wall of the annular limiting strip 9, and the fixed rotating block 4 abuts against the outer wall of the outer end of the side plate 7. This structural design not only ensures that the roller 8 can rotate stably around the central rod 6, but also further enhances the stability of the overall structure through the abutting relationship between the side plate 7 and the fixed rotating block 4. Annular limiting strips 9 are fixedly connected to the inner walls of both sides of the roller 8. Annular fixing rings 10 are fixedly connected to the outer wall of one inner end of the annular limiting strips 9. A limiting slide cylinder 11 is fixedly connected to the inner wall of the annular fixing ring 10. A connecting spring 12 is fixedly connected to the bottom of the inner wall of the limiting slide cylinder 11. A limiting insert block 13 is fixedly connected to the bottom end of the connecting spring 12. A connecting side plate 14 is sleeved on the outer wall of the limiting insert block 13. A sleeve 18 is sleeved on the inner wall of the annular groove opened on the inner side of the connecting side plate 14. A connecting screw is rotatably connected to the inner wall of the connecting side plate 14. The rod 15 has a nut 16 fixedly connected to its outer end, and a fixing block 17 is threadedly connected to the outer wall of the middle section of the connecting screw 15. These components together constitute the adjustable vibration structure inside the drum 8. Rotating the nut 16 drives the connecting screw 15 to rotate, thereby moving the fixing block 17 on the connecting screw 15, thereby adjusting the relative position between the connecting side plate 14 and the annular fixing ring 10, changing the compression degree of the connecting spring 12, and finally realizing the adjustment of the vibration amplitude inside the drum 8 to adapt to different compaction requirements. A connecting rod 19 is fixedly connected to the outer wall of the central rod 6. A fixing ring 20 is fixedly connected to the outer wall of the connecting rod 19. A biased sector block 21 is fixedly connected to the outer wall of the fixing ring 20. The fixing ring 20 and the biased sector block 21 are equidistantly arranged at the outer end of the connecting rod 19, and the circumference of the biased sector block 21 is arranged on the outer wall of the equidistant fixing ring 20. When the roller 8 rotates, the biased sector block 21 generates centrifugal force as the roller 8 rotates, which vibrates and compacts the roadbed, improving the compaction degree of the roadbed. A material box 22 is fixedly connected to one end of the inner side of the connecting bend frame 1. A top plate 23 is fixedly installed on the top of the material box 22. The inner wall of the middle section of the top plate 23 is fixedly connected to the top. A sealing plate 24 is fixedly installed, and a hopper 25 is connected to the top of the sealing plate 24. An end cap 26 is plugged into the top of the hopper 25. A pump pipe 27 is connected to the front and rear ends of the top plate 23. A spray nozzle 28 is connected to one end of the bottom of the end cap 26, and the end cap 26 is connected to the inner wall of the cross frame 3. The material box 22 is used to store roadbed reinforcement material. By opening the end cap 26, the reinforcement material can enter the material box 22 through the hopper 25. During operation, the pump pipe 27 is started to transport the reinforcement material in the material box 22 to the spray nozzle 28 and spray it evenly at the roadbed joint to enhance the performance of the joint between the old and new roadbeds. Construction method working principle: Before construction, the connecting bend frame 1, connecting turntable 2, fixing rotating block 4, locking screw 5, central rod 6, and roller 8 must be assembled according to the above structure. By rotating the locking screw 5, the connection state between the central rod 6 and the roller 8 is precisely adjusted to ensure that the roller 8 can rotate flexibly and is accurately positioned. At the same time, the smoothness of the cooperation between each rotating part is checked, and there is no jamming. In addition, the connectivity of the material box 22, pump pipe 27, and spray nozzle 28 should be carefully checked to ensure that there is no leakage. Then, an appropriate amount of subgrade reinforcement material is added to the material box 22 to prepare for subsequent operations. The assembled and debugged device is hoisted to the junction of the new and old subgrades. According to the actual site conditions, the position of the connecting bend frame 1 is finely adjusted so that the roller 8 is accurately aligned with the subgrade junction area to be treated. Using the rotation function of the connecting turntable 2, the working angle of the roller 8 is flexibly adjusted to ensure that the roller 8 can fully cover the entire junction surface, providing an accurate positional basis for subsequent compaction and spraying operations. After the device is started, the roller 8 rolls on the roadbed surface. Because the roller 8 is equipped with a weighted sector block 21, the centrifugal force generated by the weighted sector block 21 causes the roller 8 to vibrate and compact the roadbed. Compared to simple mechanical compaction, this vibratory compaction can achieve better compaction even in the deeper layers of the roadbed. Simultaneously, the reinforcing material in the material box 22, under the action of the pump pipe 27, is evenly sprayed onto the roadbed joints through the spray nozzle 28. This allows the reinforcing material to penetrate the roadbed more evenly, improving the reinforcement effect. During operation, if areas with different compaction requirements are encountered, the position of the fixing block 17 can be adjusted by rotating the connecting screw 15, thereby changing the compression degree of the connecting spring 12 and adjusting the vibration amplitude of the internal structure of the roller 8 to make the compaction effect more in line with actual needs. Perform multiple rounds of compaction and spraying operations following the steps described above. After each round of operations, carefully check the compaction degree of the roadbed and the distribution of reinforcing materials using professional testing equipment. If any local insufficient compaction degree or uneven material distribution is found, adjust the device parameters, such as vibration amplitude and spraying speed, based on the test results, and then repeat the operation until the strength and stability of the junction between the old and new roadbeds meet the design requirements, ensuring the quality and performance of the roadbed. After the operation is completed, first shut down the device, stop the rotation of the drum 8 and the spraying operation, then empty the remaining reinforcing material in the material box 22 to prevent the material residue from corroding the device; next, disassemble each component and clean it thoroughly to remove the dirt, dust and residual reinforcing material from the surface; after cleaning, perform rust prevention and other maintenance on each component, and finally store it properly for the next use to extend the service life of the device.
[0039] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
[0040] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A reinforcement device for the connection treatment of old and new roadbeds, comprising a connecting bend frame (1), characterized in that: The lower section of the connecting bend (1) is fixedly connected to the inner wall of the connecting turntable (2). The inner outer wall of the connecting turntable (2) is rotatably connected to the fixed rotating block (4). The outer wall of one end of the fixed rotating block (4) is fixedly connected to the locking screw (5). The outer wall of the locking screw (5) is threadedly connected to the central rod (6). The outer wall of the central rod (6) is sleeved with a roller (8). The inner walls of both sides of the roller (8) are fixedly connected to annular limiting strips (9). The outer wall of one end of the annular limiting strip (9) is fixedly connected to an annular fixing ring (10). The outer wall of the central rod (6) is fixedly connected to a connecting rod (19). The outer wall of the connecting rod (19) is fixedly connected to a fixing ring (20). The outer wall of the fixing ring (20) is fixedly connected to a bias-weighted fan-shaped block (21).
2. The reinforcement device for the connection treatment of old and new roadbeds according to claim 1, characterized in that: The inner wall of the annular fixed ring (10) is fixedly connected to a limiting slide cylinder (11). A connecting spring (12) is fixedly connected to the bottom of the inner wall of the limiting slide cylinder (11). A limiting plug (13) is fixedly connected to one end of the bottom of the connecting spring (12). A connecting side plate (14) is sleeved on the outer wall of the limiting plug (13). A sleeve (18) is sleeved on the inner wall of the annular groove opened on the inner side of the connecting side plate (14). A connecting screw (15) is rotatably connected to the inner wall of the connecting side plate (14). A nut (16) is fixedly connected to the outer end of the connecting screw (15). A fixing block (17) is threadedly connected to the outer wall of the middle section of the connecting screw (15).
3. The reinforcement device for the connection treatment of old and new roadbeds according to claim 1, characterized in that: The front and rear ends of the connecting turntable (2) are fixedly connected to a crossbeam (3). The inner end of the connecting bend (1) is fixedly connected to a material box (22). The top of the material box (22) is fixedly installed with a top plate (23). The inner wall of the middle section of the top plate (23) is fixedly installed with a sealing plate (24). The top of the sealing plate (24) is connected to a feeding hopper (25). The top of the feeding hopper (25) is plugged with an end cap (26). The front and rear ends of the top plate (23) are connected to a pump pipe (27). The bottom end of the end cap (26) is connected to a spray nozzle (28).
4. The reinforcement device for the connection treatment of old and new roadbeds according to claim 1, characterized in that: The connecting bend (1) is configured as an inverted L-shape, and the outer wall of the outer section of the central rod (6) is fitted with a side plate (7).
5. The reinforcement device for the connection treatment of old and new roadbeds according to claim 1, characterized in that: The fixed ring (20) and the biased sector block (21) are equidistantly arranged at the outer end of the connecting rod (19), and the biased sector block (21) is circumferentially arranged on the outer wall of the fixed ring (20) which is equidistantly arranged.
6. The reinforcement device for the connection treatment of old and new roadbeds according to claim 2, characterized in that: The limiting insert (13) is sleeved on the inner wall of the limiting slide (11), the connecting side plate (14) is set in the inner cavity of the annular fixing ring (10), and the connecting side plate (14) is sleeved on the outer wall of the connecting rod (19). The connecting screw (15), the screw cap (16) and the fixing block (17) are circumferentially equidistant, and the fixing block (17) is fixedly connected to the inner wall of the sleeve (18).
7. The reinforcement device for the connection treatment of old and new roadbeds according to claim 3, characterized in that: The end cap (26) is connected to the inner wall of the cross frame (3).
8. The reinforcement device for the connection treatment of old and new roadbeds according to claim 4, characterized in that: One end of the inner side of the side plate (7) abuts against the outer wall of the outer end of the annular limiting strip (9), and the fixed rotating block (4) abuts against the outer wall of the outer end of the side plate (7).
9. A method for using a reinforcement device for the connection between old and new roadbeds, characterized in that: Includes the following steps: Step 1: Assembly and debugging of the device. Assemble the components such as the connecting bend frame (1), connecting turntable (2), fixed rotating block (4), locking screw (5), central rod (6), and roller (8) according to the structure. Adjust the connection status between the central rod (6) and the roller (8) by rotating the locking screw (5) to ensure that each rotating component operates smoothly. At the same time, check the connectivity of the material box (22), pump pipe (27), and spray nozzle (28), and add roadbed reinforcement material into the material box (22). Step 2: On-site positioning and installation. Hoist the device to the junction of the old and new roadbeds, adjust the position of the connecting bend frame (1) so that the roller (8) is aligned with the junction area of the roadbed to be treated. Adjust the working angle of the roller (8) by using the rotation function of the connecting turntable (2) to ensure that the entire junction surface is covered. Step 3: Subgrade reinforcement operation. Start the device, and the roller (8) rolls on the subgrade surface. The internal eccentric sector block (21) generates centrifugal force as the roller (8) rotates, which vibrates and compacts the subgrade. At the same time, the reinforcement material in the material box (22) is transported to the spray nozzle (28) through the pump pipe (27) and evenly sprayed on the subgrade joint. During the operation, the position of the fixing block (17) can be adjusted by rotating the connecting screw (15), thereby adjusting the vibration amplitude of the internal structure of the roller (8) to adapt to different compaction requirements. Step 4: Multiple rounds of operation and inspection. Perform multiple rounds of compaction and spraying operations according to the above steps. After each round of operation, check the compaction degree and material distribution of the roadbed. If there are any local deficiencies, adjust the device parameters and operate again until the strength and stability of the junction between the old and new roadbeds meet the design requirements. Step 5: Disassembly and storage of the device. After the operation is completed, shut down the device and empty the remaining materials in the material box (22). Disassemble each part and clean it. After performing maintenance such as rust prevention, store it for the next use.