A road paving device for construction work and a paving method thereof

Abstract

The application discloses a road paving equipment for engineering construction and a paving method thereof, and belongs to the field of road paving equipment. The road paving equipment comprises a vehicle frame and a lower hopper, the lower hopper is arranged on the front side of the vehicle frame, a spiral paving device is arranged on the inner side of the lower hopper, a material leveling device is arranged on the rear side of the vehicle frame, the material leveling device comprises supporting plates arranged on the left and right ends of the vehicle frame and a plurality of material leveling assemblies, and conveying assemblies are arranged on the inner side ends of the two supporting plates; the conveying assembly comprises a driving sprocket, a first driven sprocket, a second driven sprocket, a third driven sprocket and a chain, the driving sprocket, the first driven sprocket, the second driven sprocket and the third driven sprocket are arranged on the supporting plates in a rectangular distribution mode and are enclosed by the chain, the driving sprocket is in transmission connection with a motor and is driven to rotate, the annular chain running on the two sides synchronously forms a power transmission carrier, and the plurality of material leveling assemblies are connected at intervals between the two chains; the plurality of material leveling assemblies are synchronously driven to circularly run by the chain, pushing, flattening and recycling are synchronously performed, and continuous uninterrupted operation is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of road paving technology, and in particular to a road paving device for engineering construction and a paving method thereof. BACKGROUND

[0002] The asphalt paver is a construction device mainly used for paving various materials on the base and surface layer of the highway. In the construction process of the asphalt pavement, the asphalt paver is often used to uniformly pave the asphalt mixture on the road base, and then the preliminary tamping and leveling are performed to ensure the quality and service life of the asphalt pavement.

[0003] However, in the actual use process, the traditional spiral paver pushes the material radially through the blade, but is limited by the linear coupling relationship between the spiral shaft rotation speed and the paving speed, which easily leads to the gradient characteristics of the mixture distribution being "dense in the middle and sparse on both sides", and the mixture is easily concentrated and gathered at the center position in front of the vehicle. When the mixture is tamped, it is easy to cause local uneven thickness, and in the case where there may be a lack of material in some areas, the flatness of the road cannot be guaranteed, which affects the paving effect and work efficiency of the road surface asphalt. SUMMARY

[0004] The present application aims to provide a road paving device for engineering construction and a paving method thereof to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a road paving device, comprising a vehicle frame and a lower hopper, the lower hopper is installed on the front side of the vehicle frame, a spiral paver is arranged on the inner side of the lower hopper, a material leveling device is arranged on the rear side of the vehicle frame, the material leveling device comprises a support plate arranged on the left and right ends of the vehicle frame and a plurality of material leveling assemblies, and a conveying assembly is arranged on the inner side end of each support plate; the conveying assembly comprises a driving sprocket, a first driven sprocket, a second driven sprocket, a third driven sprocket and a chain, the driving sprocket, the first driven sprocket, the second driven sprocket and the third driven sprocket are arranged in a rectangular shape on the support plate and enclosed by the chain, the driving sprocket is drivingly connected with a motor to drive rotation, the annular chain running synchronously on both sides constitutes a power transmission carrier, and a plurality of material leveling assemblies are connected at equal intervals between the chains on both sides;

[0006] The flat material assembly comprises a material pushing plate, a support and a flattening mechanism, two ends of the support are respectively assembled on the two side chains, the material pushing plate is arranged at the front end of the support, and overflow ports are arranged at the left and right ends of the material pushing plate, collecting grooves are arranged on the left and right sides of the support, and the collecting grooves are communicated with the overflow ports on the corresponding side, the flattening mechanism is connected between the two side chains and located at the rear side of the support, and the flattening mechanism moves with the chains to alternately push and flatten the road surface, a collecting hopper is connected between the middle portions of the two side plates, when the support moves to the upper side of the chain, the materials in the collecting groove fall into the collecting hopper through gravity to realize recycling of the materials.

[0007] Further, the flattening mechanism comprises a pressing roller and two symmetrical connecting seats arranged on the two side chains, an adjusting port is arranged on the connecting seat, a slide rod is arranged on the left and right sides of the adjusting port, a fixed block is slidably connected between the two slide rods, a spring is connected between the bottom of the fixed block and the inner wall of the adjusting port, the rotating shafts of the pressing rollers are rotatably installed on the two fixed blocks respectively, and the rotating shafts of the pressing rollers extend to the other side through the fixed blocks, a guide wheel and a gear are sleeved on the end of the rotating shaft of the pressing roller, a guide frame and a rack are arranged on the inner side of the side plate, the guide frame and the rack are located below the chain in sequence, when the pressing roller moves to the lower side of the chain, the upper side of the guide wheel on the pressing roller abuts against the guide frame, and the gear is engaged with the rack, so that the pressing roller is driven to rotate through the rack transmission, and the guide frame applies a downward limiting force to the pressing roller.

[0008] Further, an adjusting groove is arranged on the inner side of the lower portion of the side plate, an adjusting plate is slidably arranged in the adjusting groove, a telescopic cylinder is arranged on the outer side of the side plate, the piston rod of the telescopic cylinder extends to be connected with the adjusting plate to drive the adjusting plate to move up and down, the guide frame and the rack are assembled on the adjusting plate, and the two ends of the guide frame are in arc-shaped structure.

[0009] Further, the front end face of the material pushing plate is in "V" type structure, semicircular arc-shaped plates are connected with the left and right ends of the material pushing plate, the overflow ports are arranged at the connection positions of the material pushing plate and the arc-shaped plates, and the top of the collecting groove is in forward inclined structure and is hingedly provided with a baffle.

[0010] Further, a plurality of sensors are arranged at the front end of the collecting hopper, the sensors are used for detecting the distribution condition of the road materials, a plurality of discharge ports are arranged at the bottom of the collecting hopper at equal intervals along the length direction, a control valve is arranged on each discharge port, and the sensors and the control valves are electrically connected through a processor.

[0011] Further, a plurality of connecting rods are connected between the inner upper portions of the two side support plates, a flexible plate is arranged on the connecting rods, the surface of the flexible plate is provided with convex patterns, the inner upper portion of the support plate is provided with a second gear rack, and the second gear rack is located between the connecting rod and the chain; when the compression roller moves to the upper side of the chain, the surface of the compression roller abuts against the flexible plate, and the gear and the second gear rack are engaged.

[0012] The application also provides a road paving method for engineering construction, which is applied to the road paving device for engineering construction and comprises the following steps.

[0013] S1, the spiral paver uniformly spreads the asphalt mixture output by the feeding hopper on the surface of the roadbed to form an initial material pile; meanwhile, the conveying sprocket set drives the annular chain to synchronously and circularly run, and drives the plurality of material leveling assemblies to continuously move clockwise;

[0014] S2, the material pushing plate at the front end of the material leveling assembly is pushed forward under the traction of the chain, pushes away the piled-up mixture and spreads it to the side, and the overflow port at the side of the material pushing plate allows the overload material to enter the material collecting groove, so that the material is prevented from piling up;

[0015] S3, after paving, when the compression roller at the rear moves to the lower half ring of the chain, the guide wheel contacts the arc-shaped guide frame to generate downward limiting pressure, and the gear is engaged with the gear rack to drive the compression roller to rotate, so that the road surface is rolled and pressed;

[0016] S4, with the continuous driving of the chain, the material pushing plate and the compression roller are continuously moved, so that the steps S2 and S3 are repeatedly performed, and finally the mixture is leveled.

[0017] Further, in the step S2, when the overflow material collected by the material collecting groove is lifted to the top of the chain, the overflow material falls into the central material collecting hopper by gravity, so that the material collecting groove is emptied.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] 1, the material leveling assembly driven by the chain continuously and circularly moves, the material pushing plate pushes the shunt material forward, and then the compression roller rolls and compacts the road surface, so that the "push-press" circulation assembly operation is formed, and the material layer joint problem caused by the intermittent operation of the traditional equipment is avoided.

[0020] 2, the V-shaped material pushing plate can decompose the impact force of the material, the arc-shaped plate can guide the material to the side, the overflow port and the material collecting groove can allow a small amount of excess material to overflow and be recycled, the thickness of the material is uniform, the edge collapse is avoided, the compression roller is connected with the guide frame, the sliding rod, the spring structure and the adjusting plate, and the downward pressure can be dynamically adjusted to adapt to the physical characteristics of different materials.

[0021] 3. The overflow material is recycled through the cooperation of the aggregate tank and the aggregate hopper, and the sensor group transversely distributed on the aggregate hopper monitors the thickness and flatness of the paving layer in real time, and the opening and closing of the discharging valve is controlled by the processor, the material is quickly supplemented for the local material shortage area, the artificial retest and rework are avoided, and the recyclability of the recycled material is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the paving equipment of the application;

[0023] Figure 2 It is a rear view structural schematic diagram of the paving equipment of the application;

[0024] Figure 3 It is a bottom structural schematic diagram of the paving equipment of the application;

[0025] Figure 4 It is a front view of the paving equipment of the application;

[0026] Figure 5 It is a structure schematic diagram of the pushing plate of the application;

[0027] Figure 6 It is a structure schematic diagram of the pressing roller of the application.

[0028] In the figure, the vehicle frame-1, the discharging hopper-2, the spiral paving device-3, the support plate-4, the material leveling assembly-5, the conveying assembly-6, the driving sprocket-7, the first driven sprocket-8, the second driven sprocket-9, the third driven sprocket-10, the chain-11, the pushing plate-12, the support-13, the overflow port-14, the aggregate tank-15, the aggregate hopper-16, the pressing roller-17, the connecting seat-18, the adjusting port-19, the sliding rod-20, the fixed block-21, the spring-22, the guide wheel-23, the gear-24, the guide frame-25, the rack-26, the adjusting plate-27, the telescopic cylinder-28, the arc-shaped plate-29, the baffle-30, the sensor-31, the control valve-32, the connecting rod-33, the flexible plate-34, the second rack-35. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0030] As Figures 1 to 6As shown, a road paving equipment, including a frame 1 and a hopper 2, the hopper 2 is installed on the front side of the frame 1, the inside of the hopper 2 is provided with a spiral paver 3, the rear side of the frame 1 is provided with a leveling device, the leveling device includes a support plate 4 arranged on both sides of the frame 1 and a plurality of leveling assemblies 5, the inside end of the two side support plates 4 is provided with a conveying assembly 6; the conveying assembly 6 includes a driving sprocket 7, a first driven sprocket 8, a second driven sprocket 9, a third driven sprocket 10 and a chain 11, the driving sprocket 7, the first driven sprocket 8, the second driven sprocket 9 and the third driven sprocket 10 are arranged in a rectangular distribution on the support plate 4 and enclosed by the chain 11, the driving sprocket 7 is drivingly connected with a motor to drive rotation, the two sides of the synchronous operation of the endless chain 11 constitute a power transmission carrier, and the plurality of leveling assemblies 5 are connected at intervals between the two sides of the chain 11.

[0031] The leveling assembly 5 includes a pushing plate 12, a support 13 and a flattening mechanism, the two ends of the support 13 are respectively assembled on the two sides of the chain 11, the pushing plate 12 is arranged on the front end of the support 13, and the left and right ends of the pushing plate 12 are both provided with an overflow port 14, the left and right sides of the support 13 are both provided with a material collecting groove 15, and the material collecting groove 15 is in communication with the overflow port 14 on the corresponding side, the flattening mechanism is connected between the two sides of the chain 11 and located at the rear side of the support 13, and moves with the chain 11 to alternately push and flatten the road surface, and the middle part between the two side support plates 4 is connected with a material collecting hopper 16, when the support 13 moves to the upper side of the chain 11, the material in the material collecting groove 15 falls into the material collecting hopper 16 by gravity to realize recycling of the material.

[0032] The working principle of the device is: the asphalt concrete is filled into the hopper 2, after the equipment is started, the asphalt or concrete in the hopper 2 is uniformly distributed on the roadbed by the spiral paver 3 to form a preliminary material layer. The conveying assembly 6 drives the two sides of the chain 11 to operate synchronously, and drives the plurality of leveling assemblies 5 to move circularly; the pushing plate 12 moves forward with the chain 11 to push the material, which can disperse the material, make the accumulated material flow to both sides and spread out, and reduce the accumulation; the overflow port 14 allows excess material to pass through and fall into the material collecting groove 15, avoiding excessive material on the edge; then the rear roller 17 moves to the lower side of the chain 11, the guide wheel 23 contacts the arc-shaped guide frame 25, the gear 24 meshes with the rack 26, the roller 17 guide frame 25 is limited, tightly contacts the road surface and rotates, realizes rolling compaction, and finally realizes paving and flattening of the road surface through the alternating operation of the pushing plate 12 and the roller 17 with the movement of the frame 1.

[0033] In the embodiment, the flattening mechanism comprises a compression roller 17 and two connecting seats 18 symmetrically arranged on the two sides of the chain 11, the connecting seat 18 is provided with an adjusting opening 19, the adjusting opening 19 is provided with a slide rod 20 on the two sides, the two slide rods 20 are slidably connected with a fixed block 21, the bottom of the fixed block 21 is connected with a spring 22 between the inner wall of the adjusting opening 19, the both ends of the rotating shaft of the compression roller 17 are rotatably installed on the two fixed blocks 21, and the rotating shaft of the compression roller 17 extends to the other side through the fixed block 21, the rotating shaft of the compression roller 17 is sleeved with a guide wheel 23 and a gear 24, the inner side of the support plate 4 is provided with a guide frame 25 and a rack 26, the guide frame 25 and the rack 26 are sequentially located below the chain 11, when the compression roller 17 moves to the lower side of the chain 11, the upper side of the guide wheel 23 on the compression roller 17 abuts against the guide frame 25, and the gear 24 is engaged with the rack 26, so that the compression roller 17 is driven to rotate through the rack 26, and the guide frame 25 applies a downward limiting force to the compression roller 17.

[0034] In the embodiment, the inner side of the support plate 4 is provided with an adjusting groove, the adjusting groove is slidably provided with an adjusting plate 27, the outer side of the support plate 4 is provided with a telescopic cylinder 28, the piston rod of the telescopic cylinder 28 extends to be connected with the adjusting plate 27, so as to drive the adjusting plate 27 to move up and down, the guide frame 25 and the rack 26 are assembled on the adjusting plate 27, and the both ends of the guide frame 25 are in arc-shaped structure;

[0035] The compression roller 17 is slidably arranged on the connecting seat 18 through the slide rod 20, and applies a downward pressure to the road surface through the limiting action of the guide frame 25 and the movement of the chain 11; when the adjusting plate 27 rises, the guide frame 25 and the rack 26 integrally move upward, the contact point between the guide wheel 23 of the compression roller 17 and the guide frame 25 is lifted, the compression amount of the spring 22 is reduced, and the downward pressure of the compression roller 17 to the road surface is reduced; on the contrary, the downward pressure is increased when the adjusting plate 27 is lowered, and the engagement position of the rack 26 and the gear 24 changes with the lifting of the adjusting plate 27, so that the gear 24 can be smoothly engaged with the rack 26; when the thick layer base layer (such as 30cm water stable layer) is paved, the adjusting plate 27 is lowered to increase the downward pressure of the compression roller 17, so as to ensure deep compaction; the thin layer surface layer (such as 4cm asphalt) is adjusted by the adjusting plate 27, so as to prevent excessive rolling of the aggregate.

[0036] In the embodiment, the front end face of the pushing plate 12 is in a "V" type structure, the left and right ends of the pushing plate 12 are connected with semicircular arc-shaped plates 29, the overflow port 14 is arranged at the connection between the pushing plate 12 and the arc-shaped plate 29, the top of the material collecting groove 15 is in a forward inclined structure and is hingedly provided with a baffle 30, the rotating shaft of the baffle 30 has a certain resistance, when the pushing plate 12 moves to the lifting stage of the chain 11, the material collecting groove 15 is in a horizontal state, but due to the existence of the baffle 30, the material in the material collecting groove 15 will not slide out, avoiding the back scattering of the material, only when the pushing plate 12 moves to the upper side of the chain 11, at this time, the material collecting groove 15 is in a vertical state and the top opening is downward, the baffle 30 is pushed open by the material self-weight to make the material naturally slide into the material collecting hopper 16;

[0037] The front end of the pushing plate 12 adopts a "V" type obtuse angle structure, the contact area of the material decreases from the center to the two sides during paving, effectively decomposes the concentrated impact force of the material on the pushing plate 12, avoids the hard aggregate (such as gravel) from being stuck or locally worn; the V-shaped slope naturally divides the material to the left and right sides, combined with the rotating paving of the spiral paving device 3, a continuous and uniform material layer is formed, and the connection between the V-shaped tip and the two overflow ports 14 forms a "narrow-wide" gradually changing channel, allowing a small amount of material to overflow to the material collecting groove 15, which not only avoids the collapse of the paving layer edge caused by the excessive accumulation of material in the front section of the pushing plate 12, but also prevents the excessive overflow from affecting the overall flatness, and the design of the arc-shaped plate 29 forms a lateral flow guide barrier when pushing the material, limiting the lateral diffusion range of the material.

[0038] In the embodiment, the front end of the material collecting hopper 16 is provided with a plurality of sensors 31, the sensors 31 are used for detecting the distribution of the road material, a plurality of discharge ports are arranged at the bottom of the material collecting hopper 16 along the length direction at equal intervals, a control valve 32 is arranged on each discharge port, the sensors 31 and the control valves 32 are electrically connected through a processor, the material collecting hopper 16 has a heating and heat preservation mechanism, so as to avoid the coagulation of the mixture in it, and a certain amount of mixture is filled into the material collecting hopper before paving work;

[0039] If there is a local lack of material after paving: install a group of sensors 31 along the front edge of the material collecting hopper 16 at equal intervals laterally, covering the entire paving width (such as one group every 30 cm), which is used for detecting the material accumulation height, surface flatness and continuity, by comparing the preset paving parameters (such as design thickness ± 2 mm), the position of the material missing area is identified, according to the defect position, the processor activates the control valve 32 of the corresponding discharge port, so as to drop the mixture in the material collecting hopper 16 to the missing area for replenishment, and the subsequent flattening assembly continues to flatten it, so as to ensure the flatness of the road surface.

[0040] In the embodiment, a plurality of connecting rods 33 are connected between the inner upper portions of the two side support plates 4, and a flexible plate 34 is arranged on the connecting rods 33, the surface of the flexible plate 34 is provided with a convex pattern, the inner upper portion of the support plate 4 is provided with a second rack 35, and the second rack 35 is located between the connecting rod 33 and the chain 11; when the compression roller 17 moves to the upper side of the chain 11, the surface of the compression roller 17 abuts against the flexible plate 34, and the gear 24 and the second rack 35 are engaged;

[0041] The flexible plate 34 is transversely tensioned by the plurality of connecting rods 33, covers the upper half area of the moving path of the compression roller 17, and forms a “face-to-face” abutment when the surface convex pattern of the flexible plate 34 contacts the compression roller 17, thereby maximizing the cleaning area; when the compression roller 17 moves to the upper side, the gear 24 is engaged with the second rack 35, thereby driving the compression roller 17 to rotate in the opposite direction (opposite to the compaction direction); the diamond-shaped convex pattern on the surface of the flexible plate 34 is arranged at an angle to the rotation direction of the compression roller 17, thereby forming a “scraper” effect, stripping the viscous materials such as asphalt and concrete from the surface of the compression roller 17, and guiding the materials to the collecting hopper 16 for recycling, thereby avoiding the adhesion of asphalt concrete to the surface of the compression roller 17 and ensuring the material pressing effect of the compression roller 17.

[0042] The embodiment also provides a paving method, including the following steps:

[0043] S1, the spiral paver uniformly spreads the asphalt mixture output by the lower hopper on the surface of the roadbed to form an initial material pile; at the same time, the conveying sprocket set drives the annular chain to synchronously and circularly run, thereby driving the plurality of material leveling assemblies to continuously move clockwise.

[0044] S2, the pushing plate at the front end of the material leveling assembly is pushed forward under the traction of the chain, thereby pushing away the piled-up mixture and spreading it to the side, the overflow port 14 at the side of the pushing plate allows the overloaded material to enter the collecting chute 15, thereby avoiding material accumulation, and the overflow material collected by the collecting chute 15 falls into the central collecting hopper 16 by gravity when the chain lifts the material to the top, thereby emptying the collecting chute 15;

[0045] S3, after paving, when the compression roller 17 moves to the lower half ring of the chain, the guide wheel 23 contacts the arc-shaped guide bracket 25 to generate a downward limiting pressure, and the gear 24 is engaged with the rack 26 to drive the compression roller 17 to rotate, thereby rotating and rolling the road surface;

[0046] S4, as the chain continuously drives the pushing plate and the compression roller 17 to continuously move, the steps S2 and S3 are repeatedly performed, and finally the mixture is leveled.

[0047] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A road paving equipment for engineering construction, comprising a vehicle frame and a lower hopper, the lower hopper being mounted on the front side of the vehicle frame, a spiral paver being arranged on the inner side of the lower hopper, characterized in that: The rear side of the frame is provided with a material leveling device, which comprises support plates arranged at the left and right ends of the frame and a plurality of material leveling assemblies, and the inner side ends of the two support plates are provided with conveying assemblies; the conveying assembly comprises a driving sprocket, a first driven sprocket, a second driven sprocket, a third driven sprocket and a chain, the driving sprocket, the first driven sprocket, the second driven sprocket and the third driven sprocket are arranged in a rectangular distribution on the support plate and enclosed by the chain, the driving sprocket is drivingly connected with a motor to drive rotation, the two sides of the annular chain run synchronously to form a power transmission carrier, and a plurality of material leveling assemblies are connected at intervals between the two chains; The material leveling assembly comprises a material pushing plate, a support and a flattening mechanism, the two ends of the support are respectively assembled on the two chains, the material pushing plate is arranged at the front end of the support, overflow ports are formed at the left and right ends of the material pushing plate, material collecting grooves are arranged on the left and right sides of the support and communicate with the overflow ports on the corresponding side, the flattening mechanism is connected between the two chains and located at the rear side of the support, and the flattening mechanism moves with the chain to alternately push and flatten the road surface, a material collecting hopper is connected between the middle portions of the two support plates, when the support moves to the upper side of the chain, the material in the material collecting groove falls into the material collecting hopper by gravity to realize recycling of the material.

2. A road paving plant for construction works according to claim 1, characterized in that: The flattening mechanism comprises a compression roller and two symmetrical connecting seats arranged on the two chains, an adjusting opening is formed in the connecting seat, a slide rod is arranged on the inner side of the adjusting opening, a fixed block is slidingly connected between the two slide rods, a spring is connected between the bottom of the fixed block and the inner wall of the adjusting opening, the both ends of the rotating shaft of the compression roller are rotatably installed on the two fixed blocks, the rotating shaft of the compression roller extends to the other side through the fixed block, a guide wheel and a gear are sleeved on the end of the rotating shaft of the compression roller, a guide frame and a rack are arranged on the inner lower portion of the support, the guide frame and the rack are sequentially located below the chain, when the compression roller moves to the lower side of the chain, the upper side of the guide wheel on the compression roller abuts against the guide frame, and the gear is engaged with the rack, so that the compression roller is driven to rotate through the rack transmission, and the guide frame applies a downward limiting force to the compression roller.

3. A road paving plant for construction works according to claim 2, characterized in that: An adjusting groove is formed in the inner lower portion of the support, an adjusting plate is slidingly arranged in the adjusting groove, a telescopic cylinder is arranged on the outer side of the support, the piston rod of the telescopic cylinder extends to the adjusting plate to drive the adjusting plate to move up and down, the guide frame and the rack are assembled on the adjusting plate, and the both ends of the guide frame are in arc-shaped structure.

4. A road paving plant for construction works according to claim 1, characterized in that: The front end surface of the material pushing plate is in "V" type structure, semicircular arc-shaped plates are connected to the left and right ends of the material pushing plate, the overflow ports are formed at the connection between the material pushing plate and the arc-shaped plates, and the top of the material collecting groove is in forward inclined structure and hingedly provided with a baffle.

5. A road paving plant for construction works according to claim 1, characterized in that: A plurality of sensors are arranged at the front end of the material collecting hopper, the sensors are used for detecting the distribution of the road material, a plurality of discharge ports are equally and interval ly formed in the length direction of the bottom of the material collecting hopper, a control valve is arranged on each discharge port, and the sensors and the control valves are electrically connected through a processor.

6. A road paving plant for construction works according to claim 2, characterized in that: A plurality of connecting rods are connected between the inner upper portions of the two side supporting plates, and a flexible plate is arranged on the connecting rods, and the surface of the flexible plate is provided with convex patterns, and the inner upper portions of the supporting plates are provided with second gear racks between the connecting rods and the chain.

7. A method for paving a construction road, applied to the construction road paving device of claim 2, comprising the following steps: S1, the spiral paver uniformly spreads the asphalt mixture output by the feeding hopper on the surface of the roadbed to form an initial material pile; at the same time, the conveying sprocket set drives the annular chain to run synchronously in a loop, and drives the plurality of material leveling assemblies to move clockwise continuously; S2, the front end of the material pushing plate of the material leveling assembly is pushed forward under the traction of the chain, pushes away the piled-up mixture and spreads it to the side, and the overflow port on the side allows the overloaded material to enter the material collecting groove to avoid material accumulation; S3, after paving, the rear roller moves to the lower half of the chain, the guide wheel contacts the arc-shaped guide frame to generate downward limiting pressure, and the gear and the gear rack are engaged to drive the roller to rotate, thereby rotating and rolling the road surface; S4, as the chain continuously drives the material pushing plate and the roller to continuously move, the above steps S2 and S3 are repeatedly performed, and finally the mixture is leveled.

8. A method of paving a road for engineering construction according to claim 7, characterized in that: In the step S2, when the overflow material collected by the material collecting groove is lifted to the top of the chain, it falls into the central collecting hopper by gravity, thereby emptying the material collecting groove.

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