A harrow finisher

Abstract

The application discloses a kind of harrow shaping spreader, including harrow loosening device and transverse harrow mixing device, harrow loosening device includes main harrow loosening frame and is connected in the lower support of main harrow loosening frame for harrow loosening harrow loosening component;Transverse harrow mixing device includes the movable setting of the reduction gear fixed seat being set on main harrow loosening frame and along the length direction of main harrow loosening frame, reduction gear fixed seat is connected with transverse harrow mixing frame, and multiple transverse harrow teeth are connected in the bottom surface of the lower harrow tooth fixed seat of transverse harrow mixing frame.This application when spreader works, with the longitudinal harrow loosening effect of harrow loosening component that spreader operation moves, transverse harrow tooth not only can make longitudinal motion with spreader operation, it still can make transverse motion relative to harrow loosening component, solve rut more serious asphalt pavement only rely on the longitudinal harrow loosening of driving direction and cannot realize the filling, uniform distribution of material in transverse rut part, guarantee the flatness of shaping spreading.

Description

Technical Field

[0001] This invention relates to the field of road maintenance equipment technology, specifically to a rake-mixing and shaping paver. Background Technology

[0002] The asphalt pavement rake-mixing and shaping paver is used for heating and softening asphalt pavement, uniformly spraying a certain proportion of recycling agent on the surface, rake-loosening and shaping the 4-6cm asphalt pavement surface layer, and smoothing and paving. At present, there is no similar equipment at home and abroad. The main technical difficulties to be solved are as follows: For asphalt pavement with severe rutting, relying solely on longitudinal rake-loosening in the direction of travel cannot achieve the filling and uniform distribution of material in the transverse rutting areas (i.e., material shortage in the rutting areas), which affects the smoothness of subsequent shaping and paving. Summary of the Invention

[0003] The purpose of this invention is to provide a rake-mixing and shaping paver to solve the problem in the prior art that longitudinal rakeing in the driving direction cannot achieve the filling and uniform distribution of material in the transverse rut areas.

[0004] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0005] This application discloses a rake-mix paving machine, comprising:

[0006] A harrowing device, including a main harrowing frame and a harrowing assembly connected to a lower support of the main harrowing frame for harrowing;

[0007] A transverse rake mixing device includes a reducer fixing seat that is mounted on a main rake loosening frame and movable along the length of the main rake loosening frame. A transverse rake mixing frame is connected to the reducer fixing seat, and multiple transverse rake teeth are connected to the bottom surface of the lower rake tooth fixing seat of the transverse rake mixing frame.

[0008] Furthermore, the rear end of the main rake frame is fixed with an upper slide rail and a lower rack slide rail arranged along its length; the reducer mounting base is provided with several sets of rollers assembled on the upper slide rail and the lower rack slide rail.

[0009] A speed reducer is connected to the speed reducer mounting base. The input and output ends of the speed reducer are respectively equipped with a prime mover and a gear. The gear meshes with the tooth surface of the lower rack slide rail so that when the prime mover is working, it drives the speed reducer mounting base to move.

[0010] Furthermore, the transverse rake frame is nested within the inner and outer sleeves at the rear of the reducer mounting base;

[0011] The cylinder end of the rake lifting cylinder is connected to the reducer mounting base, and the piston rod end is connected to the transverse rake frame so as to adjust the rake depth of the transverse rake teeth when the rake lifting cylinder is working.

[0012] Furthermore, the rake loosening device also includes a side rake loosening frame and a drive component, and a rake loosening assembly for rake loosening is connected to the lower support of the side rake loosening frame;

[0013] The front end of the main harrowing frame is provided with a groove along the length of the main harrowing frame. The side harrowing frame is nested in the groove via a telescopic slide rail. One end of the driving member is connected to the groove, and the other end is connected to the telescopic slide rail, so that when the driving member is working, it drives the side harrowing frame to move along the length of the main harrowing frame.

[0014] Furthermore, the loosening assembly includes a loosening rotary seat, which is pinned to the lower support of the main loosening frame and / or the side loosening frame;

[0015] A rake tooth fixing seat is connected below the rake loosening rotary seat, and fine rake teeth and coarse rake teeth are connected to the bottom surface of the rake tooth fixing seat.

[0016] Furthermore, the loosening assembly also includes a loosening hydraulic cylinder;

[0017] One end of the raking cylinder is hinged to the main raking frame or the side raking frame, and the other end is hinged to the raking rotary seat, so that when the raking cylinder is working, it drives the raking rotary seat to rotate around the hinge point.

[0018] Furthermore, the rake tooth fixing seat and the rake loosening rotary seat are connected by multiple sets of elastic components, so that the rake tooth fixing seat can move towards or away from the rake loosening rotary seat.

[0019] Furthermore, the elastic component includes a spring and a tensioning bolt vertically fixed to the bottom surface of the rake rotary seat;

[0020] The rake tooth fixing seat is sleeved on the tensioning bolt and is slidably disposed with the tensioning bolt. The spring is disposed between the rake loosening rotary seat and the rake tooth fixing seat.

[0021] Furthermore, the coarse rake teeth are arranged in multiple rows in an alternating pattern at the front of the rake tooth fixing seat; the fine rake teeth are fixed at the rear of the rake tooth fixing seat.

[0022] The distance between two adjacent coarse rake teeth in the same row is greater than the distance between two adjacent fine rake teeth.

[0023] Furthermore, the slide is a C-shaped slide, and the driving component is a sliding cylinder, which is located within the C-shaped slide.

[0024] The C-shaped groove and telescopic slide rail adopt a conventional groove and slide rail connection. It is worth noting that this application places the sliding cylinder within the C-shaped groove. Specifically, the end of the cylinder body of the sliding cylinder is fixed within the C-shaped groove, and the end of the piston rod is connected to the telescopic slide rail. This design not only achieves the high reliability and stability of the C-shaped groove and slide rail connection but also protects the sliding cylinder.

[0025] Furthermore, the loosening device includes a rotary frame and multiple sets of lifting devices, wherein the rotary frame is connected to the machine frame;

[0026] The lifting device includes a parallelogram connecting rod and a lifting cylinder. One end of the parallelogram connecting rod and the lifting cylinder is connected to the slewing frame, and the other end is connected to the main rake loosening frame, so that when the lifting cylinder is working, it drives the main rake loosening frame to rise and fall.

[0027] A parallelogram connecting rod is used to ensure that the frame can only rise and fall when the hydraulic cylinder is working, and multiple lifting devices ensure the stability of the main rake frame's rise and fall.

[0028] Furthermore, it also includes a re-elevating agent spraying device connected to the side rake loosening frame;

[0029] The re-elevating agent spraying device includes a rotating spray bar, one end of which is oscillatingly connected to a rake frame, and the other end is connected to a nozzle.

[0030] Furthermore, the re-elevating agent spraying device includes a spraying fixing seat, which is fixed to the front end of the side rake loosening frame. The spraying fixing seat is provided with multiple bearing seats on the same straight line. The rear end of each of the rotating spraying rods is connected to a bearing seat, and the front end is equipped with a nozzle. Two adjacent rotating spraying rods are connected by a connecting rod III.

[0031] One of the rotating spray rods is connected to a prime mover via a transmission mechanism, so that when the prime mover is working, it drives multiple rotating spray rods to swing around the axis of the bearing housing.

[0032] Furthermore, the prime mover is a drive motor, and the transmission mechanism includes a connecting rod I and a connecting rod II connected at one end by a pin.

[0033] The other end of connecting rod I and the drive motor are respectively connected to the output end and input end of the reducer mounted on the spraying fixed base, and the other end of connecting rod II is connected to the rotating spraying rod.

[0034] Furthermore, it also includes an ironing board lifting assembly, which includes an outer sleeve, an inner sleeve, and an ironing board lifting cylinder;

[0035] The outer sleeve is pinned to the rear arm of the rotating frame on the machine frame. The inner sleeve is nested inside the outer sleeve and its bottom is connected to the leveling device. The cylinder end of the ironing plate lifting cylinder is connected to the outer sleeve, and the piston rod end is pinned to the bottom of the inner sleeve.

[0036] According to the above technical solution, the beneficial effects of the present invention are as follows:

[0037] The reducer mounting base designed in this application moves along the length of the main rake frame. When the paver is working, the rake assembly, which moves with the paving operation, performs longitudinal rakeing. The transverse rake teeth can not only move longitudinally with the paving operation, but also move laterally relative to the rake assembly. This solves the problem that longitudinal rakeing in the driving direction alone cannot fill and evenly distribute the material in the transverse ruts of asphalt pavement with severe rutting, thus ensuring the smoothness of the paving. Attached Figure Description

[0038] Figure 1 This is the front view of the present invention;

[0039] Figure 2 This is a perspective view of the invention at a 45-degree angle to the left front;

[0040] Figure 3 This is a perspective view of the present invention at a 45-degree rear right angle;

[0041] Figure 4 This is a schematic diagram of the rake loosening device and the transverse rake mixing device of the present invention;

[0042] Figure 5 This is a schematic diagram of the regenerant spraying device of the present invention;

[0043] Figure 6 This is a schematic diagram of the shaping and paving device of the present invention;

[0044] Figure 7 This is a schematic diagram showing the assembly position relationship of the regenerant spraying device, the loosening device, the transverse mixing device, and the shaping and paving device of the present invention.

[0045] In the diagram: 1. Frame, 2. Walking system, 3. Hot air heating wall, 4. Front heating wall lifting mechanism, 5. Middle heating wall lifting mechanism, 6. Cab, 7. Fuel tank, 8. Regenerant tank, 9. Engine system, 10. Loosening device, 10-1. Slewing frame, 10-2. Anti-sway tie rod, 10-3. Parallelogram connecting rod, 10-4. Lifting cylinder, 10-5. Main lodging frame, 10-5-1. C-shaped chute, 10-6. Side lodging device Frame, 10-6-1, Telescopic slide rail, 10-7, Sliding cylinder, 10-8, Loosening assembly, 10-8-1, Loosening rotary seat, 10-8-2, Rake tooth fixing seat, 10-8-3, Loosening cylinder, 10-8-4, Coarse rake teeth, 10-8-5, Fine rake teeth, 10-8-6, Spring, 10-8-7, Tensioning bolt, 11, Regenerant spraying device, 11-1, Spraying fixing seat, 11-2, Drive motor, 11-3 11-4. Worm gear reducer; 11-5. Connecting rod I; 11-6. Bearing housing I; 11-7. Connecting rod II; 11-8. Connecting rod III; 11-9. Bearing housing II; 11-10. Rotary spray rod II; 11-11. Conical media protection cover; 11-12. Sprayer head; 11-13. Regenerant hose; 11-14. Air pipe; 12. Horizontal rake mixing device; 12-1. Hydraulic motor; 12-2. Reducer 12-3. Reducer mounting base; 12-4. Roller; 12-5. Gear; 12-6. Upper slide rail; 12-7. Lower rack slide rail; 12-8. Transverse rake frame; 12-9. Rake lifting cylinder; 12-10. Transverse rake teeth; 13. Leveling device; 14. Screed; 15. Screed lifting assembly; 15-1. Outer sleeve; 15-2. Inner sleeve; 15-3. Screed lifting cylinder; 16. Road surface insulation device. Implementation

[0046] 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.

[0047] It should be noted that in the description of this invention, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this invention refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0048] This application is mainly intended to solve the problems mentioned in the background art, but the following problems on the market have not yet been solved or need to be better solved. Further embodiments of this application also attempt to solve the following problems.

[0049] (1) The existing in-situ hot recycling pavement loosening width is mostly fixed or mechanically extended. However, the width of emergency lanes and widened roads of asphalt roads varies from 3 to 4.5 meters. Existing equipment mostly uses mechanical assembly to change the loosening width, which has poor adaptability to operation and relocation. The loosening width of asphalt pavement surface layer cannot be steplessly adjusted according to the pavement width, resulting in low adaptability to working conditions.

[0050] (2) There are many manhole covers and drainage ditches on municipal roads. The existing on-site hot recycling construction mostly adopts cold milling to pre-treat the area of ​​about 2 meters around the manhole covers and drainage ditches before construction can be carried out. It is impossible to achieve hot raking and automatic obstacle avoidance around the manhole covers and drainage ditches.

[0051] (3) The application of admixtures such as recycling agents and hot asphalt in the market is uneven, the metering accuracy is low, and it affects the pavement gradation and recycling quality. The existing methods for applying recycling agents and hot asphalt admixtures in the on-site hot recycling industry mainly include two types: pipe dripping and disc spraying. Among them, the pipe dripping method uses a transverse multi-hole pipe to achieve free dripping to the asphalt pavement by gravity of the medium, which is strip-shaped. The pipe is easy to be blocked, the dripping is uneven, and the metering accuracy is low. The disc spraying method uses a DC motor to drive the disc to rotate. The medium flows into the disc and relies on the circumferential centrifugal force to spread the medium in the form of droplets. The spraying width is not adjustable, and the uniformity and accuracy of the spraying do not meet the construction requirements.

[0052] (4) The rear-mounted screed is subjected to greater lateral force during turning operations, which can easily cause breakage and damage to the leveling device, lifting cylinder and other structures.

[0053] The loosening device and the raking and shaping paver of this invention employ a constant-pressure pulse spraying method for rejuvenating agent application. This method involves high-pressure atomization and fan-shaped spraying of the medium, with the spraying bar automatically swinging in a fan shape. The spray volume is controlled in conjunction with the operating vehicle speed, resulting in uniform medium distribution and high metering accuracy. The road loosening device features an integrated triangular structure, with the side loosening device allowing for stepless extension and width adjustment. Each loosening component is independently controlled for lifting and lowering, enabling hot loosening and automatic obstacle avoidance around manhole covers and drainage ditches, providing good adaptability to various working conditions. A transverse raking and mixing device is introduced, utilizing gears and racks for left and right sliding and stepless adjustment of the transverse raking and mixing depth, achieving filling and uniform distribution of rutted road surface material, resulting in high-quality operation. The shaping and paving device incorporates a screed lifting component. Based on the traditional screed lifting cylinder of a paver, inner and outer telescopic sleeves are added. This redirects the lateral force of the screed during turning to the inner and outer telescopic sleeves, effectively reducing the stress on the leveling device and lifting cylinder, minimizing breakage and ensuring high reliability.

[0054] like Figures 1 to 7 As shown, this application discloses a harrowing and shaping paver, including a harrowing device 10 and a transverse harrowing device 12. The harrowing device 10 includes a main harrowing frame 10-5 and a harrowing assembly 10-8 connected to the lower support of the main harrowing frame 10-5 for harrowing. The transverse harrowing device 12 includes a reducer fixing seat 12-3 disposed on the main harrowing frame 10-5 and movable along the length direction of the main harrowing frame 10-5. The transverse harrowing frame 12-8 is connected to the reducer fixing seat 12-3, and a plurality of transverse harrow teeth 12-10 are connected to the bottom surface of the lower harrow tooth fixing seat of the transverse harrowing frame 12-8.

[0055] The reducer mounting base designed in this application moves along the length of the main rake frame. When the paver is working, the rake assembly, which moves with the paving operation, performs longitudinal rakeing. The transverse rake teeth can not only move longitudinally with the paving operation, but also move laterally relative to the rake assembly. This solves the problem that longitudinal rakeing in the driving direction alone cannot fill and evenly distribute the material in the transverse ruts of asphalt pavement with severe rutting, thus ensuring the smoothness of the paving.

[0056] In one embodiment of this application, the speed reducer mounting base can be moved via a gear and rack assembly. In other embodiments, a lead screw and slider mechanism or a belt drive mechanism can also be used to move the speed reducer mounting base. Compared to other methods, using a gear and rack assembly provides higher control precision. Specific configurations can be as follows:

[0057] The rear end of the main rake frame 10-5 is fixed with an upper slide rail 12-6 and a lower rack slide rail 12-7 arranged along its length; the reducer mounting base 12-3 is provided with several sets of rollers 12-4 assembled on the upper slide rail 12-6 and the lower rack slide rail 12-7; the reducer mounting base 12-3 is connected to a reducer 12-2, and the input and output ends of the reducer 12-2 are respectively equipped with a prime mover and a gear 12-5. The gear 12-5 and the tooth surface of the lower rack slide rail 12-7 mesh with each other so that when the prime mover is working, it drives the reducer mounting base 12-3 to move.

[0058] By setting the non-tooth surface of roller 12-4, upper slide rail 12-6, and lower rack slide rail, the installation support of the reducer mounting base is ensured to be stable. The movement of the reducer mounting base is ensured by the meshing of the tooth surfaces of gear 12-5 and lower rack slide rail 12-7.

[0059] The present application will now be described in more detail through embodiments.

[0060] In some embodiments, the present invention's rake-mixing and shaping paver, such as Figures 1 to 7As shown, it includes a frame 1, a walking system 2, a hot air heating wall 3, a front heating wall lifting mechanism 4, a middle heating wall lifting mechanism 5, a cab 6, a fuel tank 7, a recycling agent tank 8, an engine system 9, a road loosening device 10, a recycling agent spraying device 11, a transverse mixing device 12, a leveling device 13, a paving screed 14, a screed lifting assembly 15, and a road insulation device 16.

[0061] The lower part of the frame 1 supports the walking system 2. The cab 6 is located at the front of the frame 1. Behind the cab 6 are the fuel tank 7, the regenerant tank 8, and the engine system 9. Three sets of hot air heating walls 3 are set up. One set of hot air heating walls 3 is located at the front of the whole machine and is hinged to the frame 1 through the front heating wall lifting mechanism 4. The two outer sets of hot air heating walls 3 are arranged back to back and are suspended below the frame 1 and between the front and rear axles of the walking system 2 through the middle heating wall lifting mechanism 5. A road surface insulation device 16 is set between the front set and the two middle sets of hot air heating walls 3 and is connected by several sets of winch wire ropes. The road loosening device 10 is fixed to the bottom of the frame 1; the road loosening device 10 is hinged to the rear of the frame 1; the recycling agent spraying device 11 is fixed to the front of the road loosening device 10 and moves up and down and extends infinitely left and right with the road loosening device 10; the transverse mixing device 12 is fixed to the rear of the road loosening device 10 and moves up and down with the road loosening device 10; two sets of leveling devices 13 are arranged symmetrically on the left and right, the front end is fixed to the frame 1 through the leveling cylinder, the rear end is connected to the paving screed 14, and is suspended on the main frame of the road loosening device 10 through two symmetrically arranged screed lifting components 15.

[0062] To overcome the problems of the inability to steplessly adjust the loosening width of asphalt pavement during the loosening process, the inability to automatically avoid obstacles such as municipal manhole covers and drainage ditches during the loosening process, and the low adaptability to working conditions, the road loosening device of this invention adopts an integral triangular structure, and the side loosening device can achieve stepless extension and retraction to adjust the width.

[0063] One of the innovative aspects of this invention is that the road loosening device 10 includes a rotating frame 10-1, anti-sway tie rods 10-2, parallelogram connecting rods 10-3, lifting cylinders 10-4, a main loosening frame 10-5, a side loosening frame 10-6, sliding cylinders 10-7, and several sets of loosening components 10-8. The rotating frame 10-1 is hinged to the tail of the frame 1 and connected by two sets of symmetrical anti-sway tie rods 10-2. The main loosening frame 10-5 is connected to the rotating frame 10-1 by parallelogram connecting rods 10-3. Under the action of the two sets of lifting cylinders 10-4, the main loosening frame 10-5 can achieve... The height can be adjusted vertically. The front end of the main harrowing frame 10-5 is equipped with several sets of C-shaped sliding grooves 10-5-1. The side harrowing frame 10-6 is nested on the several sets of C-shaped sliding grooves 10-5-1 via telescopic sliding rails 10-6-1. Under the action of the sliding cylinder 10-7, the side harrowing frame 10-6 can slide and adjust left and right relative to the main harrowing frame 10-5. This overcomes the problems of the fixed width or mechanical lengthening method used in harrowing devices on the market, which is time-consuming and laborious, and has poor adaptability to operation and relocation. The harrowing width of the road surface of this invention is infinitely adjustable from 3 to 4.5 meters, which can meet the needs of asphalt road emergency lanes and widened road recycling conditions.

[0064] Furthermore, each rake loosening component is independently controlled for lifting and lowering, enabling hot rake loosening and automatic obstacle avoidance around manhole covers and drainage ditches, with good adaptability to various working conditions. The rake loosening component 10-8 includes a rake loosening rotary seat 10-8-1, a rake tooth fixing seat 10-8-2, a rake loosening cylinder 10-8-3, coarse rake teeth 10-8-4, fine rake teeth 10-8-5, springs 10-8-6, and tension bolts 10-8-7. The rake loosening rotary seat 10-8-1 is pinned to the lower support of the main rake loosening frame 10-5 or the side rake loosening frame 10-6, and connected via the rake loosening cylinder 10-8-3. One end of the rake tooth fixing seat 10-8-2 is pinned to the lower part of the rake loosening rotary seat 10-8-1, and the other end is secured by several sets of springs 10-8-6 and tension bolts 10-8-7. Several sets of coarse rake teeth 10-8-4 are also secured... The rake teeth are fixed at the front of the rake tooth fixing seat 10-8-2, with at least two rows arranged in an alternating pattern, and the tooth spacing is no more than 60mm. The fine rake teeth 10-8-5 are fixed at the rear of the rake tooth fixing seat 10-8-2, with the tooth spacing no more than 40mm. Under the action of the rake loosening cylinder 10-8-3, the rake loosening rotary seat 10-8-1 can rotate around the hinge point together with the rake tooth fixing seat 10-8-2, the coarse rake teeth 10-8-4, and the fine rake teeth 10-8-5. By adjusting the number of springs 10-8-6 and the elasticity of the tension bolts 10-8-7 to tighten the springs 10-8-6, the contact force of the coarse rake teeth 10-8-4 and the fine rake teeth 10-8-5 with the ground can be achieved.

[0065] To overcome the problem that relying solely on longitudinal loosening in the direction of travel is insufficient to fill and evenly distribute material in the transverse rutted areas when conducting in-situ hot recycling of asphalt pavements with severe rutting, thus affecting the smoothness of subsequent shaping and paving, this invention introduces a transverse mixing device. With the help of gears and racks, it can slide left and right, and the transverse mixing depth can be infinitely adjusted to achieve the filling and even distribution of material in the rutted pavement, ensuring the smoothness of subsequent shaping and paving and resulting in high-quality operation.

[0066] The second innovation of this invention: The transverse rake-stirring device 12 includes a hydraulic motor 12-1, a reducer 12-2, a reducer mounting base 12-3, rollers 12-4, gears 12-5, an upper slide rail 12-6, a lower rack slide rail 12-7, a transverse rake-stirring frame 12-8, a rake-stirring lifting cylinder 12-9, and transverse rake teeth 12-10. The upper slide rail 12-6 and the lower rack slide rail 12-7 are both fixed to the rear end of the main rake loosening frame 10-5. The reducer 12-2 is fixed on the reducer mounting base 12-3, and its input and output ends are respectively equipped with the hydraulic motor 12-1 and the gear 12-4. Several sets of rollers 12-4 are arranged on the reducer mounting base 12-3 and assembled on the upper slide rail 12-6 and the lower rack slide rail 12-7. The gear 12-5 and the lower rack slide rail 12-7 form a gear. A rack and pinion kinematic pair is used; the transverse rake frame 12-8 is nested on the rear side of the reducer mounting base 12-3 through inner and outer sleeves; the cylinder ends of the two left and right rake lifting cylinders 12-9 are fixed on the reducer mounting base 12-3, and the piston rod ends are fixed on the transverse rake frame 12-8; several sets of transverse rake teeth 12-10 are assembled on the lower rake tooth mounting base of the transverse rake frame 12-8; the hydraulic motor 12-1 drives the reducer 12-2 to drive the rack and pinion kinematic pair, which drives the roller 12-4 to slide left and right along the upper slide rail 12-6 and the lower rack slide rail 12-7, thereby driving the transverse rake frame 12-8 and the transverse rake teeth 12-10 to rake the road surface left and right; the rake lifting cylinder 12-9 realizes the overall lifting and lowering of the transverse rake frame 12-8, and realizes the adjustment of the rake depth of the transverse rake teeth 12-10.

[0067] To overcome the problems of traditional pipe-type dripping and disc-type spraying methods for distributing rejuvenating agents, hot asphalt, and other admixtures, which result in strip-shaped or droplet-shaped media, easy clogging of spray pipes, uneven dripping, low metering accuracy, and failure to meet construction requirements, this invention employs a constant-pressure pulse spraying method for rejuvenating agent application. The medium is atomized under high pressure and sprayed in a fan shape. The spraying rod automatically swings in a fan shape for spraying, and the spraying volume is linked to the operating vehicle speed for control, resulting in uniform medium distribution and high metering accuracy.

[0068] The third innovation of this invention: The regenerant spraying device 11 includes a spraying fixing base 11-1, a drive motor 11-2, a worm gear reducer 11-3, a connecting rod I 11-4, a bearing seat I 11-5, a connecting rod II 11-6, a rotating spraying rod I 11-7, a connecting rod III 11-8, a bearing seat II 11-9, a rotating spraying rod II 11-10, a conical media protective cover 11-11, and a nozzle 11-12. The spraying fixing base 11-1 is fixed to the side rake loosening frame 10. At the front end of -6, the worm gear reducer 11-3 is mounted on the spraying fixed base 11-1. Its input and output ends are connected to the drive motor 11-2 and connecting rod I 11-4, respectively. The lower part of connecting rod I 11-4 is connected to connecting rod II 11-6 via a pin. A rotating spraying rod I 11-7 is mounted on the upper part of the bearing housing I 11-5. The other end of connecting rod II 11-6 is connected to the rotating spraying rod I 11-7. A nozzle 11-12 is mounted at the end of the rotating spraying rod I 11-7, and a conical media protective cover 1 is used. 1-11 is covered. Bearing housing II11-9 is fixed to the front end of the main rake loosening frame 10-5 via a connecting plate. Rotary spraying rod II11-10 is mounted on bearing housing II11-9 and connected to rotary spraying rod I11-7 via connecting rod III11-8. Under the action of drive motor 11-2, worm gear reducer 11-3 rotates, driving connecting rod I11-4 and connecting rod II11-6 to rotate circumferentially, thereby driving rotary spraying rod I11-7 to swing left and right around the axis of bearing housing I11-5. The rotating spray bar II11-10, driven by the connecting rod III11-8, swings synchronously left and right around the axis of bearing seat II11-9, thereby achieving fan-shaped swing spraying of two sets of nozzles 11-12; at least four sets of nozzles 11-12 are provided, and the left and right spraying coverage of a single nozzle 11-12 is not less than 1 meter. Each nozzle 11-12 is connected to the regenerant tank 8 through several regenerant hoses 11-13, and is connected to the air source of the whole machine through several air pipes 11-14.

[0069] To overcome the problem that rear-mounted screeds on the market experience significant lateral forces during turning operations, which can easily lead to breakage and damage to the leveling device, lifting cylinder, and other structures, this invention introduces a screed lifting assembly into the paving device. Based on the traditional screed lifting cylinder of a paver, inner and outer telescopic sleeves are added. The lateral forces of the screed during turning are redirected to the inner and outer telescopic sleeves, effectively alleviating the stress on the leveling device and lifting cylinder, reducing the likelihood of breakage and damage, and ensuring high reliability.

[0070] The fourth innovation of this invention: The ironing board lifting assembly 15 includes an outer sleeve 15-1, an inner sleeve 15-2, and an ironing board lifting cylinder 15-3. The outer sleeve 15-1 is pinned to the rear arm of the rotating frame 10-1, and the inner sleeve 15-2 is nested in the outer sleeve 15-1. The lower part is pinned to the inner side of the leveling arm of the leveling device 13. The cylinder end of the ironing board lifting cylinder 15-3 is fixed to the inner side of the outer sleeve 15-1, and the piston rod end is pinned to the bottom of the inner sleeve 15-2. Under the action of the ironing board lifting cylinder 15-3, the ironing board 14 is lifted and lowered as a whole. When the screed is turning, the transmission sequence of the lateral force of the screed is as follows: lateral force of the screed — end of the left and right leveling booms of the leveling device 13 — inner sleeve 15-2 — outer sleeve 15-1 — slewing frame 10-1 — frame 1. During this process, the lifting cylinder 15-3 and the front end of the left and right leveling booms of the leveling device 13 are basically not subjected to lateral force, and are not prone to breakage or damage, thus having high reliability.

[0071] In addition, this invention also integrates the hot air heating wall 3, the front heating wall lifting mechanism 4 and the middle heating wall lifting mechanism 5 disclosed in the previously filed patent application No. 2020103173718, which discloses an asphalt pavement heating machine. It has high efficiency heating performance for asphalt pavement and good adaptability to curves, slopes and transfer transportation.

[0072] In summary, the loosening device and asphalt pavement raking and shaping paver provided by this invention employ a constant-pressure pulse spraying method for rejuvenating agent application, with high-pressure atomization and fan-shaped spraying of the medium. The spraying bar automatically swings in a fan shape, and the spraying volume is linked to the operating vehicle speed for uniform medium distribution and high metering accuracy. The pavement loosening device adopts an integrated triangular structure, with the side loosening device allowing for stepless extension and retraction to adjust the width. Each loosening component is independently controlled for lifting and lowering, enabling hot loosening and automatic obstacle avoidance around manhole covers and drainage ditches, resulting in good adaptability to various working conditions. The introduction of a transverse raking and mixing device, which uses gears and racks to achieve left and right sliding and stepless adjustment of the transverse raking and mixing depth, achieves filling and uniform distribution of rutted pavement material, resulting in high work quality. The shaping and paving device introduces a screed lifting component, which adds inner and outer telescopic sleeves to the traditional screed lifting cylinder of the paver. This transfers the lateral force of the screed during turning to the inner and outer telescopic sleeves, effectively alleviating the stress on the leveling device and lifting cylinder, reducing the risk of breakage and ensuring high reliability.

[0073] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A drag finish paver characterized by, The utility model relates to a kind of raking device, including: Raking device (10), including main raking frame (10-5) and the raking component (10-8) for raking being connected on the lower support of the main raking frame (10-5); Transverse rake mixing device (12), including the reduction gear fixed seat (12-3) being arranged on main raking frame (10-5) and along the length direction of main raking frame (10-5) can move, the transverse rake mixing frame (12-8) is connected on the reduction gear fixed seat (12-3), and multiple transverse rake teeth (12-10) are connected on the bottom surface of the lower rake tooth fixed seat of the transverse rake mixing frame (12-8);The raking component (10-8) includes raking rotary seat (10-8-1), and the raking rotary seat (10-8-1) is pinned on the lower support of the main raking frame (10-5); The bottom surface of the rake tooth fixed seat (10-8-2) connected below the raking rotary seat (10-8-1) is connected with fine rake tooth (10-8-5) and coarse rake tooth (10-8-4);Between the rake tooth fixed seat (10-8-2) and raking rotary seat (10-8-1), it is connected by multiple groups of elastic components to make the rake tooth fixed seat (10-8-2) move to the direction close to or away from the raking rotary seat (10-8-1); The raking device (10) includes rotary frame (10-1) and multiple groups of lifting devices, and the rotary frame (10-1) is connected with rack (1); The lifting device includes parallelogram link (10-3) and lifting oil cylinder (10-4), one end of the parallelogram link (10-3) and lifting oil cylinder (10-4) is connected with the rotary frame (10-1), and the other end is connected with the main raking frame (10-5), so that the main raking frame (10-5) is lifted when the lifting oil cylinder (10-4) works; The rear end of the main raking frame (10-5) is fixed with upper slide rail (12-6) and lower rack slide rail (12-7) arranged along its length direction;Several groups of rollers (12-4) are arranged on the reduction gear fixed seat (12-3) and assembled on the upper slide rail (12-6) and the lower rack slide rail (12-7); The reduction gear fixed seat (12-3) is connected with reduction gear (12-2), and the input and output ends of the reduction gear (12-2) are respectively assembled with hydraulic motor and gear (12-5), and the gear (12-5) and the tooth surface of the lower rack slide rail (12-7) are engaged, so that the reduction gear fixed seat (12-3) is moved when the hydraulic motor works.

2. The finisher of claim 1, wherein, The transverse rake mixing frame (12-8) is nested in the rear side of the reduction gear fixed seat (12-3) through inner and outer sleeves; The cylinder end of rake mixing lifting oil cylinder (12-9) is connected on the reduction gear fixed seat (12-3), and the piston rod end is connected with the transverse rake mixing frame (12-8), so as to adjust the rake mixing depth of the transverse rake tooth (12-10) when the rake mixing lifting oil cylinder (12-9) works.

3. The finisher of claim 1, wherein, The harrowing device (10) further comprises a side harrowing frame (10-6) and a driving member, the lower support of the side harrowing frame (10-6) is connected with a harrowing assembly (10-8) for harrowing; The front end of the main harrowing frame (10-5) is provided with a sliding groove along the length direction of the main harrowing frame (10-5), the side harrowing frame (10-6) is nested on the sliding groove through a telescopic slide rail (10-6-1), One end of the driving member is connected with the sliding groove, and the other end is connected with the telescopic slide rail (10-6-1), so that the side harrowing frame (10-6) is driven to move along the length direction of the main harrowing frame (10-5) when the driving member works.

4. The finisher of claim 3, wherein, Further comprising a re-rising agent spraying device (11) connected with the side harrowing frame (10-6); The re-rising agent spraying device (11) comprises a rotating spraying rod, one end of the rotating spraying rod is swing-connected with the harrowing frame (10-6), and the other end is connected with a spray head (11-12).

5. The finisher of claim 4, wherein, The re-rising agent spraying device (11) comprises a spraying fixed seat (11-1), the spraying fixed seat (11-1) is fixed at the front end of the side harrowing frame (10-6), a plurality of bearing seats on the same straight line are arranged on the spraying fixed seat (11-1), the rear end of each rotating spraying rod is connected with one bearing seat, the front end is provided with a spray head (11-12), and adjacent two rotating spraying rods are connected through a connecting rod III (11-8); One of the rotating spraying rods is connected with a driving motor through a transmission mechanism, so that the plurality of rotating spraying rods are swing-connected around the shaft center of the bearing seat when the driving motor works.

6. The finisher of claim 1, wherein, Further comprising a screed lifting assembly (15), the screed lifting assembly (15) comprises an outer sleeve (15-1), an inner sleeve (15-2) and a screed lifting oil cylinder (15-3); The outer sleeve (15-1) is pinned to the rear arm of the rotary frame (10-1) of the rack (1), the inner sleeve (15-2) is nested in the outer sleeve (15-1), the bottom is connected with the leveling device (13), the cylinder end of the screed lifting oil cylinder (15-3) is connected with the outer sleeve (15-1), and the piston rod end is pinned to the bottom of the inner sleeve (15-2).

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