An adjustable amplitude asphalt pavement edge forming and compacting device

Abstract

The present application relates to the technical field of road construction equipment, in particular to an adjustable amplitude asphalt pavement edge forming and compacting device, which comprises a road roller, two sides of the road roller are respectively equipped with edge compacting mechanisms, the edge compacting mechanism comprises a protective shell fixedly installed on the side surface of the road roller and a sprocket rotatably connected to the left and right sides inside the protective shell, a chain plate type conveying belt composed of multiple groups of chain plates is assembled around between the two groups of sprockets, and each group of chain plates is vertically and slidingly connected to a positioning template close to one side of the road roller. The road roller walks in cooperation with the positioning template to drive the chain plate type conveying belt to circulate, without the need for additional power components, so that the structure is simple, the energy consumption is low, and the electrical faults are few; multiple positioning templates are alternately and continuously positioned, without the need for manual secondary trimming, so that the construction efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, specifically to an adjustable amplitude asphalt pavement edge forming and compaction device. Background Technology

[0002] During asphalt pavement construction, the shaping and compaction quality of the pavement edges is a crucial factor affecting the overall smoothness, aesthetic appearance, and service life of the road. Existing road rollers rely solely on the main steel drum for overall compaction, with a fixed compaction width. This makes it difficult to effectively compact the pavement sides, shoulders, and corners, easily leading to quality defects such as insufficient edge compaction, uneven thickness, edge collapse, looseness, and edge curling.

[0003] Currently, most projects use manual trimming or small auxiliary compaction equipment to perform secondary treatment on the road surface edges. Manual trimming has low precision, poor efficiency, poor consistency in forming, and high labor costs. Small edge compaction equipment requires separate transportation and operation, which is cumbersome and has low construction efficiency, as shown in patent applications with publication numbers CN120759171A, CN221877618U, and CN111021195A. At the same time, the overlapping positions of the equipment are prone to compaction blind spots, which can easily cause asphalt mixture overflow and leakage, resulting in irregular road surface edge lines.

[0004] Furthermore, existing pavement edge compaction structures are mostly fixed, making it impossible to flexibly adjust the compaction depth and working position according to the asphalt paving thickness and edge compaction requirements of different road sections. Gaps are commonly found between the templates, allowing hot asphalt mixture to easily leak through, resulting in rough edges, large dimensional deviations, and long-term use easily leading to pavement edge seepage, cracking, and damage. Therefore, there is an urgent need for an asphalt pavement edge forming and compaction device that can flexibly adjust its amplitude, self-adaptive sealing, and controllable compaction thickness to address the shortcomings of existing technologies. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides an adjustable amplitude asphalt pavement edge forming and compaction device, which facilitates flexible adjustment of the compaction amplitude of the pavement edge.

[0006] The technical solution adopted by this invention to solve its technical problem is an adjustable-amplitude asphalt pavement edge forming and compaction device, including a road roller. Edge compaction mechanisms are respectively installed on both sides of the road roller. Each edge compaction mechanism includes a protective shell fixedly installed on the side of the road roller, and sprockets rotatably connected to the left and right sides inside the protective shell. A chain-plate conveyor belt composed of multiple sets of chain plates is mounted around the two sets of sprockets. Each set of chain plates is vertically and slidably connected to a positioning template on the side closest to the road roller. Inside the protective shell, a guide plate presses the lower positioning template downwards. An adjustment structure for adjusting the height of the positioning template is connected between the guide plate and the protective shell. A scraper cleaning component is provided inside the protective shell for cleaning the side of the positioning template closest to the road roller.

[0007] Preferably, the movable template is vertically slidably assembled at the lower end of the side of the positioning template away from the road roller, and positioning spikes are provided on the bottom surface of the movable template.

[0008] Preferably, a hydraulic movable pin is embedded on one side of the positioning template, and a positioning groove corresponding to the hydraulic movable pin is provided on the other side of the positioning template. A pressure-supplying telescopic cylinder is connected between the upper surface of the movable template and the positioning template. The pressure-supplying telescopic cylinder is connected to the hydraulic movable pin through a pipeline set in the positioning template. After the pressure-supplying telescopic cylinder is fully compressed, the lower surface of the movable template is flush with the lower surface of the positioning template.

[0009] Preferably, the scraping and cleaning component includes a scraper plate installed at an incline inside the protective shell. The scraper plate is used to scrape and clean the upper positioning template. The lower end of the scraper plate is provided with a discharge plate. The discharge plate is inclined downward and penetrates through the protective shell. The protective shell is provided with a discharge port corresponding to the discharge plate. The lower end of the scraper plate is fixedly connected to the discharge plate.

[0010] Preferably, positioning plates are connected to the upper part of both ends of the protective shell, and bolt holes are evenly distributed on the positioning plates. Positioning frames corresponding to the positioning plates are fixedly installed on both sides of the road roller. The positioning frames slide with the positioning plates and are locked with bolts.

[0011] Preferably, the adjustment structure includes connecting rods horizontally connected to both ends of the guide plate. The connecting rods pass through the protective shell and connect to the adjustment plate. The protective shell has a slot that slides vertically with the connecting rods. Several sets of nuts are fixedly installed on the side of the adjustment plate. The nuts are internally threaded to the adjustment screws. The upper end of each adjustment screw is rotatably connected to a rotating support seat that is fixed to the protective shell. One set of adjustment screws is connected to a handwheel at the top. A transmission pulley is installed on the upper part of each adjustment screw. Adjacent transmission pulleys are driven by a transmission belt.

[0012] Preferably, a plurality of positioning sliders are integrally connected to the side of the chain plate near the positioning template, and the side of the positioning template near the chain plate is provided with a positioning groove that slides with the positioning sliders. A tension spring is connected between the lower surface of the positioning slider and the bottom of the positioning groove.

[0013] Preferably, the movable template is integrally connected to several sets of positioning sliders II on the side near the positioning template, and the positioning template is provided with a positioning groove II that slides with the positioning sliders II on the side near the movable template. A support spring is connected between the upper surface of the positioning slider II and the top of the positioning groove II.

[0014] Preferably, a shovel is fixedly installed at the front end of the protective shell.

[0015] The beneficial effects of this invention are: (1) The adjustable asphalt pavement edge forming and compaction device of the present invention has complete edge compaction mechanisms on both sides of the roller. Construction personnel can start the single-side compaction mechanism separately according to different working conditions such as single-side edge of the road, double-side shoulder, and single-side of the median strip. No additional small edge compaction equipment is required. One machine can be used for all purposes, which greatly reduces the investment in equipment and the cost of relocation.

[0016] (2) The roller traveling in this invention is driven by the static friction between the positioning template and the road surface to drive the chain plate conveyor belt to circulate. No additional power components are required. The structure is simple, energy consumption is low, and electrical faults are few. Multiple sets of positioning templates are rotated and continuously limited, eliminating the need for manual secondary adjustments and improving construction efficiency.

[0017] (3) The present invention relies on the positioning template to limit the lateral movement of the road surface only, constrain the outward expansion and collapse of the mixture, prevent thickness deviation and linear distortion, and accurately control the edge forming contour; the positioning spikes at the bottom of the movable template penetrate the road surface to form mechanical anchorage, improving the driving stability of the conveyor belt; the height of the guide plate can be infinitely adjusted through the synchronous adjustment structure, with the upward adjustment suitable for thin-layer paving and the downward adjustment suitable for thick-layer paving. One set of equipment is compatible with multiple construction thicknesses and has strong adaptability to working conditions; the multi-screw synchronous transmission ensures the horizontal lifting and lowering of the guide plate, and the downward pressure stroke of the templates at each location is consistent, avoiding uneven edge thickness.

[0018] (4) This invention relies on hydraulic linkage to drive hydraulic movable pins to insert adjacent positioning templates, connecting multiple templates into an integral rigid frame, eliminating the skewness of a single template and the misalignment of segmented contours; after the pressure-supplying telescopic cylinder is fully compressed, the movable template is flush with the bottom surface of the positioning template, unifying the limit reference, and the forming thickness accuracy is high. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an isometric view of the present invention; Figure 2 for Figure 1 Another perspective isometric drawing; Figure 3 This is an isometric view of the protective shell of the present invention; Figure 4 for Figure 3Another perspective isometric drawing; Figure 5 This is an isometric view of the chain conveyor belt of the present invention; Figure 6 for Figure 5 Another perspective isometric drawing; Figure 7 This is an isometric view of the positioning template of the present invention; Figure 8 for Figure 7 Another perspective isometric drawing; In the diagram: 1. Road roller; 2. Edge compaction mechanism; 3. Protective shell; 4. Sprocket; 5. Chain conveyor belt; 6. Chain plate; 7. Positioning template; 8. Guide plate; 9. Adjustment structure; 10. Scraper cleaning component; 11. Movable template; 12. Positioning spike; 13. Hydraulic movable pin; 14. Positioning groove; 15. Pressure supply telescopic cylinder; 16. Connecting rod; 17. Adjusting plate; 18. Nut; 19. Adjusting screw; 20. Rotary support base; 21. Handwheel; 22. Drive pulley; 23. Drive belt; 24. Positioning slider one; 25. Positioning groove one; 26. Tension spring; 27. Positioning slider two; 28. Positioning groove two; 29. ​​Support spring; 30. Scraper; 31. Discharge plate; 32. Discharge port; 33. Positioning plate; 34. Positioning frame; 35. Bolt hole; 36. Shovel; 37. Groove. 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] As one embodiment of the present invention, such as Figures 1 to 8 As shown, the adjustable-amplitude asphalt pavement edge forming and compaction device of the present invention includes a road roller 1. Edge compaction mechanisms 2 are respectively installed on both sides of the road roller 1. The edge compaction mechanism 2 includes a protective shell 3 fixedly installed on the side of the road roller 1, and sprockets 4 rotatably connected to the left and right sides inside the protective shell 3. A chain plate conveyor belt 5 composed of multiple chain plates 6 is mounted around the two sets of sprockets 4. Each set of chain plates 6 is vertically slidably connected to a positioning template 7 on the side near the road roller 1. Inside the protective shell 3, there is a guide plate 8 that presses the positioning template 7 downward. An adjustment structure 9 for adjusting the height of the positioning template 7 is connected between the guide plate 8 and the protective shell 3. A scraper cleaning component 10 for cleaning the side of the positioning template 7 near the road roller 1 is provided inside the protective shell 3.

[0023] During operation, the roller 1 moves at a constant speed along the asphalt paving surface. The protective shell 3 protects the internal transmission and compaction structures, preventing asphalt mixture, dust, and debris from causing equipment jamming. During operation, the bottom of the positioning template 7 is in contact with the road surface. As the roller 1 moves, the positioning template 7 remains relatively stationary with no relative slippage. Relying on the traction force of the roller 1, the chain conveyor belt 5 and sprocket 4 are passively driven to perform circular cyclic operation, achieving adaptive follow-up operation. This significantly simplifies the equipment structure, reduces equipment manufacturing costs, energy consumption, and the probability of subsequent electrical failures, and significantly improves operational stability.

[0024] The independent positioning template 7 can move in a circular motion synchronously with the chain conveyor belt 5. When the positioning template 7 moves to the lower working area with the chain conveyor belt 5, the guide plate 8 limits and squeezes the positioning template 7, causing the positioning template 7 to slide vertically relative to the chain plate 6, and pressing the bottom of the positioning template 7 tightly against the edge of the road surface. Relying on the adhesion and limiting effect between the positioning template 7 and the road surface, the roller 1 continues to move, stably driving the chain conveyor belt 5 to circulate. At the same time, the positioning template 7 plays a lateral positioning and limiting role on the edge of the asphalt pavement. During the overall compaction operation of the roller 1, it restricts the lateral displacement of the asphalt pavement edge mixture, preventing the edge mixture from expanding outward under pressure, deforming and collapsing, effectively preventing problems such as uneven thickness of the pavement edge, linear deformation, and substandard compaction effect, and accurately ensuring the forming thickness and contour accuracy of the asphalt pavement edge. Multiple sets of positioning templates 7 work in rotation and continuously, completing edge limiting synchronously with the movement of the roller 1, without the need for secondary manual adjustment, greatly improving the continuity of construction and work efficiency.

[0025] The adjustment structure 9 between the guide plate 8 and the protective shell 3 can adjust the installation height of the guide plate 8 to adapt to different asphalt pavement construction conditions. Raising the installation height of the guide plate 8 raises the overall blocking position of the guide plate 8, shortens the downward stroke of the guide plate 8 against the positioning template 7, and reduces the overall drop height of the positioning template 7, making it suitable only for thin-layer asphalt paving. Lowering the installation height of the guide plate 8 lowers the blocking position, lengthens the downward stroke of the guide plate 8 against the positioning template 7, and increases the overall drop height of the positioning template 7, making it suitable for thick-layer asphalt paving. This achieves stepless adjustment of the positioning template 7's limiting height, significantly improving the device's adaptability to different working conditions.

[0026] After completing the limiting operation, the positioning template 7 moves with the chain conveyor belt 5 until it is separated from the guide plate 8 and then resets upward. Then, the scraper cleaning component 10 scrapes away the asphalt residue adhering to the surface of the positioning template 7, continuously ensuring that the forming surface of the positioning template 7 is clean and flat, providing a precise forming benchmark for subsequent limiting operations, and realizing an automated construction process of continuous equipment circulation and cleaning without stopping the machine.

[0027] It should be noted that the roller 1 is symmetrically equipped with edge compaction mechanisms 2 on both sides. It can be put into operation on one side of the edge compaction mechanism 2 or both sides of the edge compaction mechanism 2 can be put into operation at the same time. This allows for simultaneous compaction and shaping of the left and right edges of the road surface, solving the problem of inconsistent compaction strength, elevation, and alignment of the two sides of the edge caused by single-side operation. This ensures that the edges of the entire road surface are uniformly and regularly formed, and improves the overall construction quality of the road.

[0028] To facilitate the operation of the drive chain conveyor belt 5 and ensure the stability of the positioning template 7 after it has been pressed against the road surface, as one embodiment of the present invention, such as... Figures 5 to 8 As shown, the movable template 11 is vertically slidably assembled at the lower end of the side of the positioning template 7 away from the road roller 1, and the bottom surface of the movable template 11 is provided with positioning spikes 12.

[0029] In use, after the positioning template 7 moves with the chain conveyor belt 5 to the lower working area and is squeezed down by the guide plate 8 to fit the edge of the road surface, the movable template 11 first contacts the road surface. As the positioning template 7 continues to press down slightly, the movable template 11 slides and adapts vertically upward relative to the positioning template 7, so that the positioning spikes 12 on the bottom of the movable template 11 are firmly inserted into the base surface.

[0030] During operation, the anchoring effect of the positioning spikes 12 improves the relative stability between the movable template 11 and the road surface, stabilizes the relative position between the movable template 11 and the road surface, and avoids slippage, deviation, and airlift during operation. At the same time, the fixed-point anchoring of the positioning spikes 12 provides a stable and reliable ground force support for the passive friction drive of the entire chain conveyor belt 5, avoiding the chain conveyor belt 5 from stopping or jamming, and ensuring that the chain conveyor belt 5 moves continuously, smoothly, and at a uniform speed with the road roller 1, effectively improving the overall operational stability and continuity of the equipment. On the other hand, the anchored movable template 11 can constrain the bottom of the positioning template 7, ensuring the stability of the bottom of the positioning template 7, and further preventing the bottom of the positioning template 7 from shifting during the compaction of the asphalt pavement.

[0031] By using the movable template 11 to laterally limit the positioning template 7, the construction defects of the bottom mixture of asphalt pavement edge under pressure, bottom collapse, and uneven edge thickness are effectively solved. The road edge forming structure is reinforced from the bottom, which significantly improves the overall forming regularity and thickness uniformity of the asphalt pavement edge.

[0032] To improve the relative stability of the positioning template 7 during the compaction process, as one embodiment of the present invention, such as... Figures 7 to 8As shown, a hydraulic movable pin 13 is embedded on one side of the positioning template 7, and a positioning groove 14 corresponding to the hydraulic movable pin 13 is provided on the other side of the positioning template 7. A pressure supply telescopic cylinder 15 is connected between the upper surface of the movable template 11 and the positioning template 7. The pressure supply telescopic cylinder 15 is connected to the hydraulic movable pin 13 through a pipeline set in the positioning template 7. After the pressure supply telescopic cylinder 15 is fully compressed, the lower surface of the movable template 11 is flush with the lower surface of the positioning template 7.

[0033] In use, when the positioning template 7 moves to the lower working area with the chain conveyor belt 5, the guide plate 8 squeezes the positioning template 7 downwards, and the positioning spikes 12 on the bottom of the movable template 11 insert into the road surface to complete the anchoring. At the same time, the movable template 11 gradually slides upwards relative to the positioning template 7 to compress the pressure supply telescopic cylinder 15. As the pressure supply telescopic cylinder 15 is gradually compressed, the hydraulic medium inside it squeezes and pushes the hydraulic movable pin 13 through the built-in pipeline of the positioning template 7 to gradually extend. The extended hydraulic movable pin 13 can be inserted into the positioning groove 14 of the adjacent positioning template 7, so that multiple sets of continuous positioning templates 7 in the working area can be interlocked. In this way, the scattered and independent single positioning templates 7 are connected in series into one, which solves the problem of unilateral force tilting and limit benchmark misalignment that are easy to occur when single templates operate independently. It greatly improves the overall rigidity of the road edge limit, ensures the continuous and straight edge line of the entire working section, and avoids the contour deviation caused by segmented limit.

[0034] When the pressure supply telescopic cylinder 15 is compressed to its limit stroke, the lower surface of the movable template 11 is flush with the lower surface of the positioning template 7. At this time, the bottom surface of the positioning template 7 and the bottom surface of the movable template 11 are in contact with the road surface, ensuring the stability of the positioning template 7. When the positioning template 7 begins to move upward along the guide plate 8, the pressure between the movable template 11 and the road surface gradually decreases. The pressure supply telescopic cylinder 15 automatically and gradually rebounds and resets, the internal hydraulic pressure is released, and the hydraulic movable pin 13 automatically retracts to release the insertion and locking with the adjacent positioning template 7, so that the single set of positioning templates 7 returns to the independent sliding state, which is convenient for completing the cycle rotation with the conveyor belt without jamming or reset interference, ensuring the smooth continuous cycle operation of the equipment.

[0035] This invention features automatic start-stop locking, requiring no manual intervention or additional power source. It retains the ability of a single positioning template 7 to independently adapt to road surface undulations while achieving overall rigid locking within the work area. It balances equipment adaptability flexibility with molding accuracy stability, effectively resolving the technical contradiction between adaptive fine-tuning and overall shaping, offsetting assembly errors of a single template, and significantly improving the overall construction quality of asphalt pavement edges.

[0036] To ensure the cleaning of the positioning template 7, as an embodiment of the present invention, such as Figures 5 to 8As shown, the scraping and cleaning component 10 includes a scraper 30 installed at an incline inside the protective shell 3. The scraper 30 is used to scrape and clean the upper positioning template 7. The lower end of the scraper 30 is provided with a discharge plate 31. The discharge plate 31 is installed at an incline downward and penetrates the protective shell 3. The protective shell 3 is provided with a discharge port 32 corresponding to the discharge plate 31. The lower end of the scraper 30 is fixedly connected to the discharge plate 31.

[0037] When the positioning template 7 with residual asphalt residue is moved upward and passes the position of the scraper 30, the surface of the scraper 30 is in contact with the positioning template 7. With the continuous movement of the positioning template 7, the asphalt residue and other debris adhering to the surface of the positioning template 7 are rigidly scraped off, so that the positioning template 7 is restored to its original flat limiting reference surface.

[0038] The scraped-off asphalt residue will fall onto the surface of the discharge plate 31 fixedly connected at the lower end, and be directly discharged into the interior of the protective shell 3 through the discharge port 32 of the protective shell 3; effectively preventing the scraped residue from falling back and accumulating in the sprocket 4, chain conveyor belt 5 and sliding fit gaps inside the protective shell 3, avoiding transmission jamming, component jamming, structural wear and other failures caused by residue accumulation, and ensuring the long-term stable operation of the edge compaction mechanism 2.

[0039] To facilitate adjustment of the height of the positioning frame 34, as an embodiment of the present invention, such as Figures 1 to 4 As shown, positioning plates 33 are connected to the upper part of both ends of the protective shell 3. Bolt holes 35 are evenly distributed on the positioning plates 33. Positioning frames 34 corresponding to the positioning plates 33 are fixedly installed on both sides of the road roller 1. The positioning frames 34 slide with the positioning plates 33 and are locked with bolts.

[0040] During use, the sliding fit between the positioning plate 33 and the positioning frame 34 allows for fine-tuning of the overall vertical alignment of the protective shell 3. This enables flexible adjustment of the overall installation height of the edge compaction mechanism 2 based on the on-site asphalt paving height and the flatness of the road base, precisely matching the grounding limit reference of the positioning template 7 and the movable template 11, thus avoiding adaptation deviations caused by fixed equipment installation heights. After the overall position of the protective shell 3 is fine-tuned, the bolt holes 35 evenly distributed on the positioning plate 33 are used in conjunction with bolts to achieve rigid locking, forming an integral fixed structure between the positioning plate 33 and the positioning frame 34, restricting the vertical movement, horizontal displacement, and angular sway of the protective shell 3 during operation.

[0041] The positioning frame 34 and positioning plate 33 of the present invention are easy to assemble and disassemble. They do not require modification of the main structure of the road roller 1. The overall installation and disassembly of the edge compaction mechanism 2 can be completed by simply removing and installing bolts. This greatly facilitates daily maintenance, component replacement and construction site transfer and storage, and effectively improves the flexibility of equipment use and on-site adaptability.

[0042] To ensure the usability of the adjustment structure 9, as one embodiment of the present invention, such as Figures 1 to 3 As shown, the adjustment structure 9 includes a connecting rod 16 horizontally connected to both ends of the guide plate 8. The connecting rod 16 passes through the protective shell 3 and is connected to the adjustment plate 17. The protective shell 3 has a slot 37 that slides vertically with the connecting rod 16. Several sets of nuts 18 are fixedly installed on the side of the adjustment plate 17. The nuts 18 are internally threaded to the adjustment screws 19. The upper end of each adjustment screw 19 is rotatably connected to a rotating support seat 20 that is fixed to the protective shell 3. The top of one set of adjustment screws 19 is connected to a handwheel 21. A transmission pulley 22 is installed on the upper part of each adjustment screw 19. Adjacent transmission pulleys 22 are driven by a transmission belt 23.

[0043] In use, the operator can directly turn the handwheel 21 to drive the corresponding adjusting screw 19 to rotate. When a single adjusting screw 19 rotates, it drives all the other adjusting screws 19 to rotate synchronously in the same direction through the transmission pulley 22 and the transmission belt 23, driving the adjusting plate 17 to rise and fall vertically. The guide plate 8 follows the adjusting plate 17 to rise and fall synchronously as a whole, ultimately precisely changing the pressing limit height of the guide plate 8 on the positioning template 7. The synchronous transmission of multiple adjusting screws 19 can ensure that the adjusting plate 17 and the guide plate 8 maintain a horizontal posture throughout the entire process of rising and falling, ensuring that the overall downward pressing limit height of the guide plate 8 is uniform and consistent. This makes the downward pressing stroke of all positioning templates 7 in the working area uniform, effectively ensuring that the limit reference height of the entire road surface edge is consistent, and avoiding quality problems such as local edge thickness deviation and uneven forming height.

[0044] To ensure the stability of the relative sliding between the positioning template 7 and the chain plate 6, as one embodiment of the present invention, such as... Figures 7 to 8 As shown, the chain plate 6 is integrally connected to several sets of positioning sliders 24 on the side near the positioning template 7. The positioning template 7 is provided with a positioning groove 25 on the side near the chain plate 6, which slides with the positioning sliders 24. A tension spring 26 is connected between the lower surface of the positioning sliders 24 and the bottom of the positioning groove 25.

[0045] When the chain plate 6, along with the chain plate conveyor belt 5, drives the positioning template 7 to the lower working area, the guide plate 8 presses against the top of the positioning template 7. The positioning template 7 descends smoothly relative to the chain plate 6 through the precise sliding cooperation of the positioning groove 25 and the positioning slider 24. The tension spring 26 is stretched, causing the positioning template 7 and the movable template 11 to fit against the road surface to complete the limiting and anchoring operation. The corresponding cooperation structure of multiple sets of positioning sliders 24 and positioning grooves 25 can form multi-point limiting guidance for the positioning template 7, effectively limiting the forward and backward, left and right deviation and skew jamming of the positioning template 7.

[0046] When the positioning template 7 rotates out of the working area with the chain conveyor belt 5 and is freed from the squeezing constraint of the guide plate 8, the elastic recoil force of the tension spring 26 can stably pull the positioning template 7 back to its original position, so that the positioning template 7 can quickly leave the road surface and return to its initial high position. It automatically releases the ground friction drive constraint, ensuring that the positioning template 7 can smoothly follow the chain conveyor belt 5 to complete the circular cycle without the template getting stuck, unable to reset, or dragging on the road surface.

[0047] To ensure the stability of the relative sliding between the movable template 11 and the positioning template 7, as an embodiment of the present invention, such as... Figures 7 to 8 As shown, the movable template 11 is integrally connected to several sets of positioning sliders 27 on the side near the positioning template 7. The positioning template 7 is provided with a positioning groove 28 that slides with the positioning sliders 27 on the side near the movable template 11. A support spring 29 is connected between the upper surface of the positioning sliders 27 and the top of the positioning groove 28.

[0048] In use, when the positioning template 7 is pressed down by the guide plate 8 to conform to the edge of the asphalt pavement, the bottom surface of the movable template 11 first contacts the pavement surface and completes the initial anchoring and limiting through the positioning spikes 12. As the positioning template 7 continues to move along the guide plate 8, the positioning template 7 continues to press down, and the reverse support force of the pavement pushes the movable template 11 to slide vertically upward relative to the positioning template 7. At this time, the positioning slider 27 moves precisely upward along the positioning groove 28, simultaneously squeezing and compressing the top support spring 29. Multiple sets of positioning sliders 27 and positioning grooves 28 form a multi-point symmetrical guide structure, which limits the front-to-back, left-to-right offset and deflection jamming between the positioning template 7 and the movable template 11, ensuring that the movable template 11 always maintains a vertical sliding posture, with uniform relative sliding gap and smooth sliding process without jamming. This provides a reliable mechanical motion basis for the stable compression of the subsequent pressure supply telescopic cylinder 15 and the precise extension and locking of the hydraulic movable pin 13, avoiding problems such as insufficient hydraulic stroke and failure of plug-in locking caused by sliding offset.

[0049] When the movable template 11 is pressed upward and the pressure supply telescopic cylinder 15 is fully compressed to its limit, the lower surface of the movable template 11 is flush with the lower surface of the positioning template 7. At this time, the support spring 29 is in a compressed energy storage state, which can provide a continuous downward elastic pre-tightening force to the movable template 11, so that the positioning spike 12 is always pressed and anchored inside the road surface, and the bottom anchoring posture is stably maintained, ensuring that the bottom edge of the road surface is firmly shaped and without collapse or deformation.

[0050] When the positioning template 7 rotates out of the lower working area and is freed from the road surface constraint along with the chain conveyor belt 5, the movable template 11 loses the road surface support reaction force. The support spring 29 releases its elastic potential energy and pushes the positioning slider 27 downward, causing the movable template 11 to quickly reset downward. Simultaneously, the pressure supply telescopic cylinder 15 springs back to reset, and the hydraulic movable pin 13 retracts to unlock, releasing the locking state of the adjacent positioning template 7. This ensures that each set of templates can smoothly follow the chain conveyor belt 5 to complete the circular cycle without motion interference or reset jamming. It continuously adapts to the continuous automated construction process of the equipment, effectively ensuring the continuity of the overall operation and the stability of the forming.

[0051] To facilitate the removal of excess asphalt material from the edges, as one embodiment of the present invention, such as Figures 1 to 4 As shown, a shovel 36 is fixedly installed at the front end of the protective shell 3.

[0052] During operation, the roller 1 moves the entire machine forward, and the front-mounted blade 36 prioritizes contact with the edge of the newly paved asphalt pavement. It actively cuts, removes, and cleans up excess asphalt material that has overflowed or accumulated excessively during the paving process. This precisely removes redundant mixture at the pavement edge, strictly limiting the actual paving width of the asphalt pavement and preventing the accumulation of material at the edge. The removed excess asphalt material naturally detaches from the pavement edge work area and does not remain near the shaped work surface. After being cleaned by the blade 36, the pavement edge is free of excess material overflow, localized material accumulation, and has a neat and clear boundary. This provides a precise and clean limiting boundary for the subsequent circulating positioning template 7, ensuring that the positioning template 7 only provides lateral restraint to the asphalt mixture of the compliant width. This completely avoids problems such as template offset, limiting deformation, excessively wide pavement edges, and uneven thickness caused by the accumulation of excess material at the edge. Meanwhile, the scraper 36 removes blocky and piled-up excess materials in advance, which can effectively prevent large-volume debris from entering the sliding fit gap of the positioning template 7 and the movable template 11 as well as the inside of the transmission structure, ensuring the continuous and stable operation of the entire edge compaction mechanism 2.

[0053] When in use, the vertical fine adjustment of the overall installation height of the edge compaction mechanism 2 is achieved by the sliding cooperation between the positioning plate 33 and the positioning frame 34, which can adapt to different base elevations and paving conditions. After the fine adjustment is in place, the bolt locking can restrict the movement, offset and shaking of the protective shell 3 in all directions during the operation, ensuring the assembly accuracy of the internal structure and the stability of the working posture. At the same time, it is easy to disassemble and assemble, which facilitates equipment maintenance, replacement of parts and construction site transfer.

[0054] The operator turns handwheel 21, which drives multiple sets of adjusting screws 19 to rotate synchronously via transmission pulley 22 and transmission belt 23. This drives the adjusting plate 17 and guide plate 8 to rise and fall horizontally as a whole through threaded transmission, precisely changing the compression limit height of the guide plate 8 on the positioning template 7. Raising the guide plate 8 increases its downward pressure limit position, shortening the downward stroke of the positioning template 7, suitable for thin-layer asphalt paving construction; lowering the guide plate 8 decreases its downward pressure limit position, increasing the downward stroke of the positioning template 7, suitable for thick-layer asphalt paving construction. This achieves stepless adjustment of the limit height, effectively improving the versatility of the device and the accuracy of construction adaptation.

[0055] During the movement of the roller 1, the blade 36 prioritizes pre-treatment of the newly paved road edge, actively cutting and removing excess asphalt material that has overflowed or accumulated during paving, strictly limiting the standard paving width of the road edge, and avoiding bulky accumulation of edge material. The bottom of the positioning template 7 is in contact with the asphalt pavement and remains relatively stationary without relative slippage. Relying on the traction of the roller 1, it passively drives the sprockets 4 on both sides and the chain conveyor belt 5, which is composed of multiple sets of chain plates 6, to perform continuous closed-loop circular operation, realizing fully automatic adaptive follow-up operation, greatly simplifying the equipment structure and reducing energy consumption and failure probability.

[0056] When the positioning template 7 moves to the lower working area with the chain conveyor belt 5, the guide plate 8 forms a rigid compression limit on the top of the positioning template 7, pushing the positioning template 7 vertically downward relative to the chain plate 6 and pressing it tightly against the edge of the road surface. This forms a lateral positioning constraint on the edge of the asphalt pavement, limiting the lateral displacement of the edge mixture during the overall compaction process of the roller 1, preventing the mixture from expanding outward under pressure and collapsing, effectively preventing problems such as uneven thickness, linear distortion, and substandard compaction accuracy of the road surface edge, and accurately ensuring the shaping contour and thickness accuracy of the road surface edge. When the positioning template 7 moves out of the working area and is freed from the compression constraint of the guide plate 8, the tension spring 26 retracts, causing the positioning template 7 to automatically move upward and reset, releasing the ground constraint and ensuring smooth and uninterrupted operation of the chain conveyor belt 5.

[0057] When the positioning template 7 descends, the movable template 11 first contacts the road surface. As the positioning template 7 continues to press down, the reverse support force of the road surface pushes the movable template 11 to slide upward relative to the positioning template 7, allowing the positioning spike 12 to firmly penetrate the road base layer, achieving mechanical anchoring. Through the insertion limit of the positioning spike 12, the relative position of the movable template 11 and the road surface is completely locked, preventing slippage, airlift, and deviation during operation. At the same time, it provides a stable and reliable ground force support point for the passive friction drive of the chain conveyor belt 5, avoiding conveyor belt slippage, jamming, and stoppage, and ensuring the continuity and stability of the entire machine's follow-up operation.

[0058] During the upward movement of the movable template 11 under pressure, the pressure-supplying telescopic cylinder 15 gradually compresses, and the internal hydraulic medium drives the hydraulic movable pin 13 to extend and engage with the positioning groove 14 of the adjacent positioning template 7 through the built-in pipeline. This allows multiple sets of independent positioning templates 7 in the working area to interlock and lock together, forming an integral rigid limiting structure. This effectively solves the problems of tilting, offsetting, and misalignment of the limiting reference when a single template is operating independently, ensuring the continuous and straight edge line of the working section. After the template moves out of the working area, the road support disappears, the pressure-supplying telescopic cylinder 15 automatically rebounds and resets, the hydraulic pressure is released, the hydraulic movable pin 13 retracts and unlocks, and each positioning template 7 returns to its independent sliding state without affecting the conveyor belt's circulation, achieving fully automatic dynamic locking and unlocking.

[0059] When the positioning template 7 moves upward along the conveyor belt and passes the scraper plate 30, the scraper plate 30 rigidly scrapes off the asphalt mixture and debris adhering to the template surface, restoring the forming surface of the positioning template 7 to a flat and clean state; the scraped residue slides along the inclined discharge plate 31 and is directly discharged outside the protective shell 3 through the discharge port 32.

[0060] 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 protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable amplitude asphalt pavement edge forming and compaction device, comprising a road roller (1), characterized in that: The road roller (1) is equipped with edge compaction mechanisms (2) on both sides. The edge compaction mechanism (2) includes a protective shell (3) fixedly installed on the side of the road roller (1) and sprockets (4) rotatably connected to the left and right sides inside the protective shell (3). A chain plate conveyor belt (5) composed of multiple chain plates (6) is mounted around the two sets of sprockets (4). Each set of chain plates (6) is vertically slidably connected to the positioning template (7) on the side close to the road roller (1). The protective shell (3) is provided with a guide plate (8) that presses the positioning template (7) downward. An adjustment structure (9) for adjusting the height of the positioning template (7) is connected between the guide plate (8) and the protective shell (3). The protective shell (3) is provided with a scraper cleaning part (10) for cleaning the side of the positioning template (7) close to the road roller (1).

2. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 1, characterized in that, The lower end of the positioning template (7) away from the road roller (1) is vertically slidably assembled with the movable template (11), and the bottom surface of the movable template (11) is provided with positioning spikes (12).

3. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 2, characterized in that, A hydraulic movable pin (13) is embedded on one side of the positioning template (7), and a positioning groove (14) corresponding to the hydraulic movable pin (13) is provided on the other side of the positioning template (7). A pressure-supplying telescopic cylinder (15) is connected between the upper surface of the movable template (11) and the positioning template (7). The pressure-supplying telescopic cylinder (15) is connected to the hydraulic movable pin (13) through a pipeline set in the positioning template (7). After the pressure-supplying telescopic cylinder (15) is fully compressed, the lower surface of the movable template (11) is flush with the lower surface of the positioning template (7).

4. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 3, characterized in that, The scraping and cleaning component (10) includes a scraper (30) that is inclined and installed inside the protective shell (3). The scraper (30) is used to scrape and clean the upper positioning template (7). The lower end of the scraper (30) is provided with a discharge plate (31). The discharge plate (31) is inclined downward and penetrates the protective shell (3). The protective shell (3) is provided with a discharge port (32). The lower end of the scraper (30) is fixedly connected to the discharge plate (31).

5. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 4, characterized in that, The upper part of both ends of the protective shell (3) is connected to a positioning plate (33). Bolt holes (35) are evenly distributed on the positioning plate (33). The positioning frame (34) corresponding to the positioning plate (33) is fixedly installed on both sides of the road roller (1). The positioning frame (34) slides with the positioning plate (33) and is locked by bolts.

6. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 5, characterized in that, The adjustment structure (9) includes a connecting rod (16) horizontally connected to both ends of the guide plate (8). The connecting rod (16) passes through the protective shell (3) and is connected to the adjustment plate (17). The protective shell (3) has a slot (37) that slides vertically with the connecting rod (16). Several sets of nuts (18) are fixedly installed on the side of the adjustment plate (17). The nuts (18) are internally threaded to the adjusting screw (19). The upper end of the adjusting screw (19) is rotatably connected to a rotating support seat (20) fixed to the protective shell (3). The top of one set of adjusting screws (19) is connected to a handwheel (21). The upper part of the adjusting screw (19) is equipped with a transmission pulley (22). The adjacent transmission pulleys (22) are driven by a transmission belt (23).

7. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 6, characterized in that, The chain plate (6) is integrated with several sets of positioning sliders (24) on the side near the positioning template (7). The positioning template (7) is provided with a positioning groove (25) that slides with the positioning slider (24) on the side near the chain plate (6). A tension spring (26) is connected between the lower surface of the positioning slider (24) and the bottom of the positioning groove (25).

8. The adjustable amplitude asphalt pavement edge forming and compaction device according to claim 7, characterized in that, The movable template (11) is integrated with several sets of positioning sliders (27) on the side near the positioning template (7). The positioning template (7) is provided with a positioning groove (28) that slides with the positioning slider (27) on the side near the movable template (11). A support spring (29) is connected between the upper surface of the positioning slider (27) and the top of the positioning groove (28).

9. An adjustable-amplitude asphalt pavement edge forming and compaction device according to any one of claims 1 to 8, characterized in that, A shovel (36) is fixedly installed at the front end of the protective shell (3).

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