An asphalt pavement milling and resurfacing mixture edge finishing and compacting device

Abstract

The utility model relates to road engineering construction equipment technical field discloses a kind of asphalt pavement milling paving mixture edge-rolling compaction devices, is installed in the rear wheel outside of small double-steel-wheel road roller travel direction, comprising: box, rotary brush and press wheel;Box is fixedly connected on the rear wheel of small double-steel-wheel road roller by mounting rod, mounting rod is obliquely arranged, and the mounting rod upper end is threadedly fixed with the support of rear wheel, lower end is threadedly fixed with box, rotary brush is connected with rotating motor, rotary brush is below the one end of box towards travel direction, the rotation direction of rotary brush is counterclockwise, press wheel is arranged at the bottom of the one end of box away from travel direction, rotary brush bottom and rear wheel bottom are flush, the working efficiency of asphalt mixture compaction can be greatly improved by the device, reduce the cost of manual edge-rolling;In addition, the device structure is simple, easy to produce, install and disassemble, and is adapted to a variety of small road rollers.

Description

Technical Field

[0001] This utility model relates to the technical field of highway engineering construction equipment, and in particular to an asphalt pavement milling and overlay mixture edge finishing and compaction device. Background Technology

[0002] During the milling and overlay construction of asphalt pavement, the asphalt mixture at the edge of the pavement (such as the splicing of new and old pavement and the connection of curb stones) is prone to loose accumulation due to problems such as uneven distribution of material and untimely manual repair during the paving process. If not dealt with in time, it will lead to insufficient compaction of the edge mixture in the subsequent compaction process, which in turn will cause defects such as cracking, water seepage and subsidence at the edge of the pavement.

[0003] In existing technologies, the treatment of loose road surface mixtures mainly relies on manual edge finishing: workers use rakes, brooms, and other tools to gather the loose material at the edges towards the inside of the road surface, and then a small double-drum roller compacts the gathered mixture. This method has the following drawbacks: low efficiency, high cost, unstable quality, and poor equipment adaptability.

[0004] Therefore, there is an urgent need for a device that can be integrated with a small double-drum roller and has both edge trimming and compaction functions to solve the problems of low efficiency, high cost and unstable compaction quality of manual edge trimming. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an asphalt pavement milling and overlay mixture edge finishing and compaction device, which can simultaneously achieve edge finishing and compaction of asphalt pavement mixture, realize the integrated operation of "edge finishing and compaction", and improve construction efficiency and compaction quality.

[0006] This utility model embodiment provides an asphalt pavement milling and overlay mixture edge finishing and compaction device, which is installed on the outside of the rear wheel of a small double-drum roller in the direction of travel. It includes: a box body, a rotating brush, and a pressure roller. The box body is fixed to the rear wheel of the small double-drum roller by a mounting rod. The mounting rod is inclined and the upper end of the mounting rod is threaded to the bracket of the rear wheel, and the lower end is threaded to the box body. The rotating brush is connected to a rotating motor and is located below the end of the box body facing the direction of travel. The rotating brush rotates counterclockwise. The pressure roller is located at the bottom of the end of the box body away from the direction of travel, and the bottom of the rotating brush is flush with the bottom of the rear wheel.

[0007] Optionally, the rotating brush includes a cross-shaped retaining plate and bristles fixed to its lower end.

[0008] Optional, bristle density 50 pieces / cm The bristles are made of durable nylon filaments.

[0009] Optionally, the axis of the mounting rod is at an angle of 15° to 30° to the horizontal plane.

[0010] Optionally, the lower end of the mounting rod has a connecting lug parallel to the horizontal plane, and the connecting lug is threaded to the upper end face of the housing.

[0011] Optionally, the mounting rod is a one-piece molded long plate structure.

[0012] Optionally, the rotating motor is located inside the housing, and a lifting mechanism is connected to the upper end of the rotating motor. The lifting mechanism is connected to the housing and drives the rotating brush to move up and down.

[0013] Optionally, the bottom of the box has a mounting groove, the pressure roller is located in the mounting groove, the pressure roller is connected to the box by a fastener, the upper end of the fastener is threaded to the box, and the lower end of the fastener is rotatably connected to the wheel axle of the pressure roller.

[0014] Optionally, the fasteners include two T-shaped iron plates and a round rod. The horizontal plates of the two T-shaped iron plates are threaded to the left and right sides of the box body, respectively. The round rod passes horizontally through the center hole of the wheel axle of the pressure roller, and the two ends of the round rod are vertically connected to the vertical plate of one T-shaped iron plate.

[0015] Optionally, the pressure roller is a solid steel roller with anti-slip texture on the outer circumference, and an elastic pad is installed between the pressure roller and the box body.

[0016] The technical solution provided by this utility model has the following advantages compared with the prior art: This utility model provides an asphalt pavement milling and overlay mixture edge finishing and compaction device. During operation, a rotating brush adheres to the ground, and a rotating motor drives the brush to rotate counterclockwise, bringing the loose asphalt mixture at the edge of the pavement inwards, thus achieving edge finishing. The compaction roller moves with a small double-drum roller to compact the finished mixture, enabling integrated edge finishing and compaction operations. It is also suitable for large-scale milling and overlay projects. No additional edge finishing workers are required, significantly reducing project labor costs. Furthermore, the uniformity of the rotating brush's finishing range and the compaction roller's pressure avoids quality fluctuations caused by manual operation. This utility model provides a highly adaptable mixture edge finishing and compaction device; the mounting rod and compaction roller are detachable, making it compatible with mainstream small double-drum rollers on the market. Its simple structure and short installation and disassembly time facilitate construction turnover. Attached Figure Description

[0017] Figure 1 A side view of an asphalt pavement milling and overlay mixture edge compaction device provided in an embodiment of this utility model; Figure 2 A rear view of an asphalt pavement milling and overlay mixture edge compaction device provided in an embodiment of this utility model; Figure 3 for Figure 1A schematic diagram of the overall structure at point A in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Vehicle body; 2. Rear wheel; 3. Mounting rod; 4. Box body; 5. Rotating brush; 6. Pressure roller; 7. Fixing component; 8. Rotary motor; 9. Lifting mechanism. Detailed Implementation

[0019] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this utility model 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 limitations on this utility model.

[0021] The present invention will be described below through several specific embodiments. To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present invention appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0022] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a side view of an asphalt pavement milling and overlay mixture edge finishing and compaction device provided in an embodiment of the present invention. Figure 2 This is a rear view of an asphalt pavement milling and overlay mixture edge finishing and compaction device provided in an embodiment of the present invention. Figure 3 for Figure 1 A schematic diagram of the overall structure at point A is shown below. Figure 1 , Figure 2 and Figure 3As shown, this utility model embodiment provides an asphalt pavement milling and overlay mixture edge finishing and compaction device, installed on the outside of the rear wheel 2 of a small double-drum roller in the direction of travel. It includes: a housing 4, a rotating brush 5, and a pressure roller 6. The housing 4 is fixedly connected to the rear wheel 2 of the small double-drum roller via a mounting rod 3. The interior of the housing 4 is hollow, allowing the addition or reduction of counterweights (such as cast iron blocks) according to actual compaction needs, to precisely control the linear pressure of the pressure roller 6 on the ground. The housing 4 serves as the main load-bearing body of the device, housing a rotating motor 8 and a battery. The housing 4 effectively encloses the rotating brush 5 and the transmission unit. To prevent splashed mixture from injuring personnel or equipment, and to contain the small amount of dust generated during the finishing process, the mounting rod 3 can be made of high-strength alloy steel, combining lightweight design with sufficient structural strength to withstand vibration and impact during operation. Its tilt setting is not arbitrary but carefully calculated to ensure the overall center of gravity of the device is closer to the rear wheel of the roller, reducing additional torque and improving the stability of the equipment operation. This tilt angle allows the rotating brush 5 to contact and process the loose mixture at an optimal angle in advance, creating favorable conditions for subsequent compaction by the roller 6. The mounting rod 3 can be long... The angle or degree of adjustment (e.g., via a sleeve structure or multiple mounting holes) is adjustable to accommodate different models of small double drum rollers and various working conditions. The mounting rod 3 is inclined, with its upper end threaded to the rear wheel 2 bracket and its lower end threaded to the housing 4. The rotating brush 5 is connected to a rotating motor 8, and the rotating brush 5 is connected to the output shaft of the rotating motor 8 via a coupling. The rotating brush 5 is located below the end of the housing 4 facing the direction of travel, and its rotation direction is counter-clockwise. This direction causes the brush bristles to "lift" the material from the ground and throw loose material upwards and backwards, rather than... It pushes forward, thus avoiding the accumulation of materials. The rotating motor 8 is a DC geared motor (power 300W~500W, speed 100r / min~150r / min) with built-in overload protection to prevent the mixed material from jamming and causing motor damage. The motor power supply can be the battery built into the box 4 (capacity 12Ah / 20Ah) or directly connected to the vehicle power supply of the road roller. The box 4 is equipped with a USB charging port on the outside for convenient battery charging. The pressure roller 6 is set at the bottom of the end of the box 4 opposite to the direction of travel, and the bottom of the rotating brush 5 is flush with the bottom of the rear wheel 2.

[0023] Working principle: The device is fixed to the outside of the rear wheel 2 of the small double steel drum roller by the mounting rod 3. The rear wheel 2 is installed on the vehicle body 1. The rotating motor 8 and the roller are started. When the roller moves forward, the rotating motor 8 drives the rotating brush 5 to rotate counterclockwise, which gathers the loose asphalt mixture at the edge of the road surface into the road surface. Then the roller 6 moves with the roller to compact the gathered mixture.

[0024] This utility model provides an asphalt pavement milling and overlay mixture edge finishing and compaction device. During operation, a rotating brush adheres to the ground, and a rotating motor drives the brush to rotate counterclockwise, bringing the loose asphalt mixture at the edge of the pavement inwards, thus achieving edge finishing. The compaction roller moves with a small double-drum roller to compact the finished mixture, enabling integrated edge finishing and compaction operations. It is also suitable for large-scale milling and overlay projects. No additional edge finishing workers are required, significantly reducing project labor costs. Furthermore, the uniformity of the rotating brush's finishing range and the compaction roller's pressure avoids quality fluctuations caused by manual operation. This utility model provides a highly adaptable mixture edge finishing and compaction device; the mounting rod and compaction roller are detachable, making it compatible with mainstream small double-drum rollers on the market. Its simple structure and short installation and disassembly time facilitate construction turnover.

[0025] Refer again Figure 3 The rotating brush 5 includes a cross-shaped fixing plate and bristles fixed to its lower end. The fixing plate adopts a cross-shaped structure, rather than a simple disc or strip plate. This design can minimize its own weight while ensuring structural strength and rigidity. The material can be Q345B high-strength steel plate or alloy steel, which is laser-cut or stamped to ensure that it can withstand the centrifugal force during rotation and the reaction force during brush operation, and provide a uniform and stable fixing base for the bristles. The cross structure intersects in four directions, and the center of the cross-shaped fixing plate is equipped with a high-strength flange or conical sleeve, which is rigidly connected to the output shaft of the rotating motor 8 by bolts to ensure reliable power transmission. The bristles are in a cluster form and are firmly embedded in the four arms of the cross-shaped fixing plate by stainless steel springs or special clamps. This fixing method facilitates replacement after local wear and is economical. The length of the bristles is usually slightly longer than the sweeping depth required for the work, so that they can be straightened by centrifugal force when rotating at high speed to form an effective sweeping surface. The ends can be designed to be flush or beveled. The beveled type can form a better material flow guide.

[0026] When the rotating brush 5 rotates, it can form a 360° cleaning range without obvious blind spots; when the rotating brush 5 is working, the cross structure can make the force more even and reduce the deformation or breakage of the bristles.

[0027] The following aspects should be considered when setting the bristle density: ① The volume, weight, and shape of the object to be cleaned. For pebbles, refer to the brush density settings of the robot vacuum cleaner. Generally, medium-density brushes (8-12 bristles per centimeter) are used, corresponding to 64-144 bristles per square centimeter. However, if the bristle density is too high, pebbles may get stuck in the bristles. Therefore, the minimum bristle density is set to 50 bristles per cubic centimeter.

[0028] ② The edge-cleaning device cleans mostly uneven and hard surfaces. Similarly, referring to the brush density settings of the sweeping robot, medium to high density brushes (10 to 14 bristles per centimeter) are used for hard and uneven surfaces, corresponding to 100 to 196 bristles per square centimeter. At the same time, hard nylon bristles are mostly used for hard surfaces.

[0029] ③ This edge-collecting device does not have a suction device, so it relies solely on physical sweeping to collect scattered stones from the roadside. Therefore, the bristles need to be set to medium density or higher.

[0030] Considering the minimum threshold, the bristle density in this embodiment of the invention is... 50 pieces / cm 2 It is used to enhance the gathering effect of the mixture. The bristles are made of wear-resistant nylon filaments and have a long service life.

[0031] refer to Figure 2 The axis of mounting rod 3 forms an angle of 15° to 30° with the horizontal plane. This angle directly determines the forward distance of the rotating brush 5 and the pressure roller 6 relative to the rear wheel 2 of the road roller. A smaller angle, such as 15°, allows the device to extend further and cover a wider area; a larger angle, such as 30°, brings the device closer to the rear wheel, resulting in better coordination. Simultaneously, this angle also determines the effective working height of the rotating brush 5 and the pressure roller 6 during operation. It is essential to ensure that within the entire range of 15° to 30°, the bottoms of the rotating brush 5 and the pressure roller 6 remain flush with the bottom of the rear wheel 2 or have a slight pre-compaction.

[0032] Specifically, the lower end of the mounting rod 3 has a connecting lug plate parallel to the horizontal plane. The connecting lug plate is threaded to the upper end face of the housing 4. The upper front part of the housing 4 has a flat surface for welding the mounting rod 3, and the lower front part has a connecting hole for installing the rotating brush 5. The connecting lug plate is preferably made of Q345B low-alloy high-strength steel of the same or higher grade as the mounting rod 3 to ensure that it has sufficient strength, toughness and fatigue resistance. The connection between the connecting lug plate and the lower end of the mounting rod 3 is not a simple welding, but a process of integral forging or precision CNC cutting followed by welding and annealing. Integral forging can obtain a continuous and smooth metal flow line and the best structural strength; welding requires bevel welding, and the weld penetration and quality must be ensured. Stress-relieving annealing is required after welding to prevent deformation and brittle fracture. The connecting lug plate is a rectangular thick steel plate with one or more (usually two, arranged vertically) smooth holes in the middle. The diameter of the holes is slightly larger than the diameter of the high-strength bolt to facilitate installation. At the connection root between the connecting ear plate and the mounting rod 3 body, a triangular reinforcing rib can be installed, which can significantly increase the bending section modulus at the ear plate root, effectively disperse stress, and prevent cracking from this stress concentration area under long-term vibration load. The ear plate surface should be hot-dip galvanized or sandblasted and then coated with epoxy zinc-rich primer to resist rainwater and corrosive media in the field construction environment and ensure the long-term durability of the connection joint.

[0033] When the device is in operation, the rotating brush 5 and the pressure roller 6 are subjected to the reaction force from the ground. This force is transmitted to the housing 4, which then transmits the force as shear force to the connecting lugs of the mounting rod 3 through the hole wall where the connecting lugs contact. Subsequently, the force flows along the inclined mounting rod 3 and is finally transmitted to the rear wheel bracket of the roller. In this process, the high-strength bolts mainly bear the preload, which tightly presses the connecting lugs to the housing 4, generating a large static friction force and ensuring that the hole wall remains in contact to transmit the shear force. The bolts themselves do not primarily bear the shear load.

[0034] Optionally, the mounting rod 3 is a one-piece molded long plate structure.

[0035] Mounting rod 3 is forged as a single piece. A rectangular connecting lug is provided at one end of mounting rod 3 near the housing 4. The connecting lug is fully welded to the pre-set mounting surface at the upper middle position of the front end of the housing 4, and is further secured to the housing 4 with three bolts. Mounting rod 3 is a one-piece molded long plate structure. One end is connected to the upper middle position of the front end of the housing 4 by full welding and bolt and nut fixing, while the other end is installed on the rear wheel axle or rear wheel bracket of the small double-drum roller by bolt and nut fixing.

[0036] Optionally, the rotary motor 8 is located inside the housing 4, and a lifting mechanism 9 is connected to the upper end of the rotary motor 8. The lifting mechanism 9 is connected to the housing 4 and drives the rotary brush 5 to move up and down. The specific implementation of the lifting mechanism 9 can be one of the following three forms: a screw slide module, consisting of a servo motor, coupling, precision ball screw, and linear slide rail. The servo motor drives the ball screw to rotate, converting the rotational motion into linear lifting motion of the motor mounting plate fixed to the screw nut. The linear slide rail is responsible for guiding and bearing radial force, ensuring smooth and jam-free operation; a hydraulic cylinder consisting of a small double-acting hydraulic cylinder and a hydraulic lock. By controlling the direction and flow of the hydraulic oil circuit, the piston rod of the cylinder is driven to extend or retract, thereby lifting or pulling the entire rotary motor assembly. It has a compact structure, large thrust, strong impact resistance and overload capacity, and is very suitable for the harsh working conditions of road rollers; an electric actuator integrating the motor, reduction gear, and screw into one unit. It is easy to install, controls similarly to an electric motor, and provides medium thrust and accuracy. During operation, the lifting mechanism 9 adjusts the height of the rotating brush 5 by telescopic adjustment, so that the rotating brush 5 fits the ground and is suitable for overlay layers of different thicknesses. The rotating motor 8 drives the rotating brush 5 to gather the loose asphalt mixture at the edge of the asphalt pavement towards the interior of the pavement. The pressure roller 6 moves with the small double steel wheel roller to compact the gathered mixture.

[0037] Optionally, the bottom of the housing 4 has a mounting groove, and the pressure roller 6 is partially located in the mounting groove. The pressure roller 6 is connected to the housing 4 by a fastener 7. The upper end of the fastener 7 is threaded to the housing 4, and the lower end of the fastener 7 is rotatably connected to the wheel axle of the pressure roller 6. The outer wall of the housing 4 is provided with a connecting hole for connecting the fastener 7. The lower front end of the housing 4 is provided with a connecting hole for installing the rotating brush 5, and the lower rear end is provided with a mounting groove for installing the pressure roller 6.

[0038] The bottom structure of the housing 4 can be divided into three functional areas: Front connection area: This area has reinforced connection holes for mounting the rotating brush 5 and its lifting mechanism 9. This area typically protrudes downwards to allow space for the rotating brush's movement. Middle cavity: This serves as the main load-bearing area. Reinforcing ribs can be installed inside, and counterweights can be placed to adjust the overall center of gravity and the ground pressure of the pressure roller. Rear mounting groove: This refers to a U-shaped or door-shaped groove extending downwards and backwards from the bottom of the housing. This groove allows the upper part of the pressure roller 6 to be embedded within it, achieving a compact structure. The upper end of the fastener 7 is bolted to the housing for easy disassembly and installation. The lower end supports the pressure roller axle and is manufactured using forging or casting processes. The material is the same as the housing to ensure its rigidity and strength.

[0039] Optionally, the fastener 7 includes two T-shaped iron plates and a round rod. The horizontal plates of the two T-shaped iron plates are respectively threaded to the left and right sides of the box body 4. The round rod passes horizontally through the center hole of the wheel axle of the pressure roller 6, and the two ends of the round rod are respectively vertically connected to the vertical plate of a T-shaped iron plate.

[0040] At least three round holes are opened on the upper part of the T-shaped iron plate. The upper part of the T-shaped iron plate is connected to the upper part of the two sides of the rear end of the box 4. After the fixing bolts pass through the reserved round holes of the T-shaped iron plate, they are tightened by nuts. The fixing parts 7 and pressure rollers 6 are installed on the box 4. The fixing bolts are high-strength bolts and the fixing nuts are anti-loosening nuts.

[0041] Specifically, the pressure roller 6 is a solid steel roller with anti-slip texture on its outer circumference to improve compaction friction. An elastic pad (rubber material) is installed between the pressure roller 6 and the box 4 to buffer vibration during the compaction process and prevent the pressure roller 6 from loosening.

[0042] Example 1: The specific structure and installation of an asphalt pavement milling and overlay mixture edge finishing and compaction device.

[0043] This embodiment provides an asphalt pavement milling and overlay mixture edge finishing and compaction device, and the parameters of each component are as follows: Box 4: Dimensions are 400 mm (Length) × 200 mm (Width) × 150 mm (High), using 3 mm Thick Q235 steel plate welding, with 5 pre-drilled mounting holes (hole diameter 25mm) for the rotating brush at the bottom. mm) and the mounting groove of pressure roller 6 (the mounting groove is a semi-cylinder with a radius of 135) mm 200 mm ); Rotary brush 5: Diameter 120 mm 150 mm in length mm The bristles are 6 mm Coarse abrasion-resistant nylon yarn (density 60 strands / ) cm 2 The brush axis is 20. mm A steel shaft of a certain diameter is connected via a coupling to a DC geared motor of model ZGA37RG (power 400W, speed 120). r / min 2 Output shaft connection; Pressure roller 6: Diameter 250 mm Width 200 mm Solid steel structure, with milling spacing of 10mm on the outer circumference. mm Depth 2 mm Anti-slip texture, axle size 25 mm A steel shaft of diameter, fitted with M16 high-strength bolts (fixing part 7) and anti-loosening nuts; Fixture 7: Round rod diameter 22 mm Length 300 mm (Compatible with 200) mm Wide pressure roller 6); T-shaped iron plate thickness 9 mm The lower minister 80 mm 70cm wide mm Upper Minister 180 mm 70cm wide mm The horizontal plate has three round holes, and the vertical plate has one round hole at the bottom. Mounting rod 3: Overall length 600mm mm Width 100 mm Connecting ear plate 100 mm ×80 mm ×12 mm (3 M12 bolt holes); Storage battery: 12 V / 20 Ah The lead-acid battery is built into the rear of the casing and has a USB Type-C charging port on the outside. The charging time is about 8 hours, and a single charge can provide 6 to 8 hours of continuous operation.

[0044] Installation steps: Pre-treatment of enclosure 4: Weld a pre-set mounting surface (100 mm) to the upper middle position of the front end of enclosure 4. mm ×80 mm ×12 mm (Q235 steel plate), and pre-drill 3 M12 threaded holes on the steel plate; Connection between mounting rod 3 and housing 4: Align the connecting lug of mounting rod 3 with the preset mounting surface, and first perform full welding around the lug (weld height 8). mm After naturally cooling for 2 hours, insert 3 M12 bolts and tighten them; Connecting Mounting Rod 3 to the Roller: Insert the end fork into the rear wheel axle of the small double-drum roller (ensure the inner wall of the fork fits snugly against the axle), insert the M16 bolt, and tighten with the fixing nut; Install the rotating brush 5: Insert the shaft of the rotating brush 5 into the mounting hole at the bottom of the housing 4, and connect it to the output shaft of the rotating motor 8 inside the housing 4 via a coupling. Adjust the contact height between the brush bristles and the road surface (usually 2). mm ); Install the pressure roller 6: Attach the transverse plate of the T-shaped fastener 7 to the pre-set mounting plane at the bottom rear end of the housing 4, ensuring the longitudinal plate is vertically downward and centered on the pressure roller 6. Adjust the position of the T-shaped fastener 7 so that the pre-set circular hole in the transverse plate aligns with the threaded hole on the mounting plane of the housing 4, and insert three M16 bolts. Place the pressure roller 6 horizontally, insert the round rod through the circular hole in the longitudinal plate of the T-shaped fastener 7, pass it through the center hole of the pressure roller 6, and then exit through the circular hole in the longitudinal plate on the other side, with each end of the axle extending 50mm. mm Install anti-loosening washers on both ends of the axle and screw in M20 locking nuts to ensure that the pressure roller 6 can rotate freely.

[0045] Connect the power supply: Connect the power cord of the rotating motor 8 to the battery or the on-board power supply of the road roller in the housing 4, and test the rotation direction of the rotating brush 5 (make sure it is counterclockwise) and the rotation flexibility of the pressure roller 6.

[0046] Example 2: Field Application of the Device This embodiment uses asphalt pavement milling and overlay engineering as an example to illustrate the application process of the device: Construction scenario: Road surface overlay thickness 4 cm (SMA-13 ​​mixture), the edge is the joint between the old and new road surfaces (100mm wide). mm The XCMG XMR303 small double drum roller (rear wheel track 180) was used. mm ); Operating parameters: Roller travel speed 2 Rotating motor 8, speed 120 Rotating brush 5, convergence range 120 mm Compact with roller 6 twice; Homework process: After the paving machine completes the asphalt mixture paving, manual preliminary finishing is carried out in the middle area of ​​the road surface, retaining 100mm of the edges. mm ~150 mm Loose mixtures within a range; Start the small double-drum roller and edge compaction device. The roller travels along the edge of the road surface, and the rotating brush rotates counterclockwise to bring the loose mixture at the edge inwards (after compaction, the thickness of the mixture at the edge is the same as that in the middle area, approximately 4 mm). ); The roller 6 moves with the road roller to compact the gathered mixture. During the compaction process, the elastic pads buffer the vibration and prevent the roller 6 from loosening.

[0047] The above-described embodiments are merely a few specific examples of this utility model. However, the embodiments of this utility model are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. An asphalt pavement milling and overlay mixture edge finishing and compaction device, installed on the outside of the rear wheel (2) of a small double-drum roller in the direction of travel, characterized in that, include: Box body (4), rotating brush (5) and pressure roller (6); The box (4) is fixed to the rear wheel (2) of the small double steel drum roller by the mounting rod (3). The mounting rod (3) is inclined and the upper end of the mounting rod (3) is threaded to the bracket of the rear wheel (2) and the lower end is threaded to the box (4). The rotating brush (5) is connected to a rotating motor (8). The rotating brush (5) is located below the end of the box (4) facing the direction of travel. The rotation direction of the rotating brush (5) is counterclockwise. The pressure roller (6) is located at the bottom of the end of the box (4) away from the direction of travel. The bottom of the rotating brush (5) is flush with the bottom of the rear wheel (2). The rotating brush (5) includes a cross-shaped fixing plate and bristles fixed to its lower end; The density of the bristles 50 pieces / cm 2 ; The rotating motor (8) is located inside the housing (4). The upper end of the rotating motor (8) is connected to a lifting mechanism (9). The lifting mechanism (9) is connected to the housing (4). The lifting mechanism (9) drives the rotating brush (5) to move up and down. The rotating motor (8) is a DC geared motor, and the diameter of the rotating brush (5) is 120 mm. mm 150 mm The bristles are 6 mm Coarse, wear-resistant nylon yarn; the rotating motor (8) has a power of 400W and a speed of 120. r / min .

2. The asphalt pavement milling and overlay mixture edge finishing and compaction device as described in claim 1, characterized in that, The axis of the mounting rod (3) forms an angle of 15° to 30° with the horizontal plane.

3. The asphalt pavement milling and overlay mixture edge finishing and compaction device as described in claim 2, characterized in that, The lower end of the mounting rod (3) has a connecting ear plate parallel to the horizontal plane, and the connecting ear plate is threaded to the upper end face of the housing (4).

4. The asphalt pavement milling and overlay mixture edge finishing and compaction device as described in claim 2, characterized in that, The mounting rod (3) is a long plate structure formed in one piece.

5. The asphalt pavement milling and overlay mixture edge finishing and compaction device as described in claim 1, characterized in that, The bottom of the box (4) has an installation groove, and the pressure roller (6) is located in the installation groove. The pressure roller (6) is connected to the box (4) by a fastener (7). The upper end of the fastener (7) is threaded to the box (4), and the lower end of the fastener (7) is rotatably connected to the wheel axle of the pressure roller (6).

6. The asphalt pavement milling and overlay mixture edge finishing and compaction device as described in claim 5, characterized in that, The fastener (7) includes two T-shaped iron plates and a round rod. The horizontal plates of the two T-shaped iron plates are respectively threaded to the left and right sides of the box body (4). The round rod passes horizontally through the center hole of the wheel axle of the pressure roller (6). The two ends of the round rod are respectively vertically connected to the vertical plate of a T-shaped iron plate.

7. The asphalt pavement milling and overlay mixture edge finishing and compaction device as described in claim 1, characterized in that, The pressure roller (6) is a solid steel roller with anti-slip texture on its outer circumference. An elastic pad is installed between the pressure roller (6) and the box body (4).

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