Roadbed pavement paving equipment and paving method

Abstract

The invention discloses roadbed and pavement paving equipment and a paving method, and relates to the technical field of road construction, the roadbed and pavement paving equipment comprises a first paving mechanism and second paving mechanisms rotationally connected to the two sides of the first paving mechanism; the first paving mechanism comprises a frame, a V-shaped material collecting plate is fixedly connected to the middle of the frame, a second paving roller and a second pressing roller which are rotationally connected with the frame are arranged at the two ends of the V-shaped material collecting plate in the extending direction of the V-shaped material collecting plate, and a hopper fixedly connected with the frame is arranged at the end, away from the second paving roller, of the V-shaped material collecting plate. The hopper is communicated with the V-shaped material collecting plate through a spiral conveyor, a discharging opening is horizontally formed in the bottom end of the hopper, and a material blocking plate is fixedly connected to the discharging opening. According to the roadbed pavement paving equipment and the paving method, the equipment is good in applicability, the influence of the pavement preset material uniformity on the paving quality can be effectively reduced, and the consistency and the flatness of the paving thickness of a full-width pavement are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road construction, in particular to a roadbed pavement laying device and laying method. BACKGROUND

[0002] In the field of roadbed pavement paving construction, the adaptability, transportation convenience and material utilization efficiency of the paving device directly affect the construction progress and engineering quality.

[0003] The existing paving device generally has the following technical defects: firstly, the operation width adjustment flexibility is poor, most devices are designed with fixed width, which can only adapt to single specification pavement, and the adaptability to different width of municipal roads, rural highways and other scenes is insufficient; the structure of some devices with adjustable width is complex, and the overall length cannot be effectively shortened after adjustment, which occupies a large space during transportation, significantly increasing the transportation cost and operation difficulty. Secondly, the material supply mode has shortcomings: on the one hand, traditional devices store materials in self-provided hoppers, which continuously supply materials to the paving mechanism, which can ensure the uniformity of paving material supply, but the hopper storage capacity is limited, and intermittent material supplement by transportation equipment is needed, which not only increases the configuration number of construction equipment, but also increases the difficulty of equipment coordination and scheduling and construction cost; on the other hand, some paving schemes adopt the method of directly piling materials on the road surface for paving, which is prone to uneven paving thickness if the material distribution on the road surface is uneven.

[0004] Therefore, it is necessary to provide a roadbed pavement laying device and laying method to solve the above problems. SUMMARY

[0005] (I) Technical problems solved The purpose of the present application is to provide a roadbed pavement laying device and laying method to solve the problems raised in the background.

[0006] (II) Technical solutions To achieve the above purpose, the present application is implemented by the following technical solutions: a roadbed pavement laying device, comprising a first paving mechanism and a second paving mechanism rotatably connected on both sides of the first paving mechanism; The first paving mechanism comprises a vehicle frame, the middle part of the vehicle frame is fixedly connected with a V-shaped material collecting plate, both ends of the V-shaped material collecting plate are provided with a second paving roller and a second pressing roller rotatably connected with the vehicle frame along the extension direction of the V-shaped material collecting plate, one end of the V-shaped material collecting plate away from the second paving roller is provided with a hopper fixedly connected with the vehicle frame, the hopper is communicated with the V-shaped material collecting plate through a screw conveyor, a bottom end of the hopper is horizontally provided with a discharge port, and a material blocking plate is fixedly connected at the discharge port; the second paving mechanism comprises a movable frame, the movable frame is rotatably connected with the vehicle frame, and a first paving roller and a first pressing roller are rotatably connected on the movable frame along the length direction of the movable frame.

[0007] Preferably, a support roller is arranged below the hopper and rotatably connected with the frame, and the length of the support roller is greater than the width of the V-shaped material collecting plate.

[0008] Preferably, helical conveying blades are fixedly connected to the outer sides of the first and second spreading rollers, and the helical directions of the helical conveying blades at the two ends of the first spreading roller are opposite.

[0009] Preferably, a material collecting groove is arranged between the discharge port and the material blocking plate, a helical conveying roller is arranged inside the hopper, and the helical directions of the helical conveying blades at the two ends of the helical conveying roller are opposite.

[0010] Preferably, the material blocking plate is provided with a third compression roller on the side away from the discharge port.

[0011] Preferably, the front end of the first spreading mechanism and the end of the second spreading mechanism away from the first spreading mechanism are each provided with a traction mechanism, and the movable frame and the frame are rotatably connected with the traction mechanism.

[0012] Preferably, a lifting platform is fixedly connected to the traction mechanism, and the first spreading mechanism and the second spreading mechanism are rotatably connected with the lifting platform.

[0013] The method for laying roadbed and pavement by using the roadbed and pavement laying device comprises the following steps: The second spreading mechanism is rotated to adjust the coverage range of the device to adapt to the width of the roadbed to be laid; On the road section in front of the walking direction, the spreading material is placed on the roadbed to be laid in the length direction of the roadbed according to the designed spreading thickness and the material consumption per unit area at the position corresponding to the second spreading mechanism; The device is pulled to walk along the road by the traction mechanism, and the first and second spreading mechanisms cooperate to spread the pavement from the outside to the inside; The excess material is collected by the V-shaped material collecting plate and conveyed into the hopper by the helical conveying machine, and when the device walks to the area where the material is insufficient, the material in the hopper falls from the discharge port to the roadbed to lay the middle roadbed.

[0014] (Three) beneficial effects Compared with the prior art, the present application provides a roadbed and pavement laying device and laying method, which has the following beneficial effects: 1. The roadbed pavement laying device and laying method, through the combination design of the first paving mechanism and the relatively rotatable second paving mechanism, the overall operation width of the device can be flexibly adjusted, the width requirement of different specifications of the to-be-laid pavement can be accurately adapted, and the application range of the device is greatly improved. Meanwhile, by relatively rotating the two second paving mechanisms, the length of the whole machine can be effectively shortened, the space occupation requirement in the transportation process is reduced, and the transfer, storage and flexible scheduling of the device at the construction site are facilitated.

[0015] 2. The roadbed pavement laying device and laying method, the device does not need to be matched with a special material conveying device to continuously convey the material, and the material can be directly pre-stored in the corresponding area of the to-be-laid pavement, so that the material supply process is simplified, the number of transportation devices required for construction is reduced, and the operation efficiency of the construction site is improved.

[0016] 3. The roadbed pavement laying device and laying method, through the cooperation of the V-shaped material collecting plate, the screw conveyor and the hopper, real-time recycling and temporary storage of excess material during paving can be realized. When the paving thickness of the middle pavement is insufficient, the temporarily stored material can be accurately discharged through the discharge port for supplementing, which not only improves the material utilization rate and avoids waste, but also effectively reduces the influence of the uniformity of the preset material on the paving quality, and guarantees the consistency and flatness of the paving thickness of the full-width pavement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a perspective view of the structure of the present application; Fig. 2 is a top view of the structure of the present application; Fig. 3 is a sectional view of the structure of the present application.

[0018] In the figure: 1, hopper; 2, screw conveyor; 3, V-shaped material collecting plate; 4, first paving mechanism; 5, second paving mechanism; 6, traction mechanism; 7, movable frame; 8, first paving roller; 9, first compression roller; 10, second compression roller; 11, second paving roller; 12, vehicle frame; 14, screw conveying roller; 15, third compression roller; 16, material blocking plate; 17, material collecting groove; 18, discharge port; 19, supporting roller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0020] Please refer to Figs. 1-3As shown, a kind of subgrade pavement laying equipment and laying method, including first paving mechanism 4 and second paving mechanism 5, first paving mechanism 4 includes frame 12, the middle part of frame 12 is fixedly connected with V-shaped aggregate plate 3, both ends of V-shaped aggregate plate 3 are provided with second paving roller 11 and second compression roller 10 rotatably connected with frame 12 along its extension direction, the end of V-shaped aggregate plate 3 away from second paving roller 11 is provided with hopper 1 fixedly connected with frame 12, hopper 1 is communicated with V-shaped aggregate plate 3 by screw conveyor 2, the bottom end of hopper 1 is horizontally provided with discharge port 18, discharge port 18 is fixedly connected with baffle 16;Both ends of first paving mechanism 4 are provided with first paving mechanism 4, and the first paving mechanism 4 includes movable frame 7, movable frame 7 is rotatably connected with frame 12, first paving roller 8 and first compression roller 9 are rotatably connected on movable frame 7 along its length direction.The outer side of first paving roller 8 and second paving roller 11 is fixedly connected with screw conveying blade, and first paving roller 8 and second paving roller 11 are driven to rotate by motor or hydraulic motor.

[0021] By configuring first paving mechanism 4 and second paving mechanism 5, the flexible adjustment of equipment operation width can be realized by the way of rotating second paving mechanism 5 relative to first paving mechanism 4, so as to adapt to the width requirement of different subgrade pavement to be laid, and the application range of equipment is effectively improved;Meanwhile, by relatively rotating two second paving mechanisms 5, the overall length of equipment can be shortened, and then the transfer and storage of equipment are facilitated.

[0022] In the process of subgrade pavement paving operation, the material is unloaded to the operation area corresponding to second paving mechanism 5, and the material is completed paving along the direction from outside to inside;The excess material generated in the paving process is collected by V-shaped aggregate plate 3 and then conveyed into hopper 1 by screw conveyor 2 for temporary storage.When the paving thickness of middle road surface does not reach the design requirement, the material temporarily stored in hopper 1 can be discharged through discharge port 18 to supplement the material in the area with insufficient thickness, so as to improve the convenience of paving operation and the uniformity of paving layer thickness.

[0023] Preferably, the screw directions of screw conveying blades at both ends of first paving roller 8 are opposite;By means of conveying blades with opposite screw directions, the material can be conveyed to both side edges of paving area, so as to avoid the problem of substandard paving thickness caused by insufficient material supply in edge area.

[0024] In order to ensure that the spacing between baffle 16 and ground is consistent with the thickness of layer to be laid, support roller 19 rotatably connected with frame 12 is arranged below hopper 1, and the length of support roller 19 is greater than the width of V-shaped aggregate plate 3.Support roller 19 is located on the laying layer to support hopper 1 and control the spacing between baffle 16 and ground.The longer support roller 19 can avoid insufficient middle laying thickness, so that it can extend to the area with uniform paving, and the problem of support failure caused by insufficient middle paving layer thickness is avoided.

[0025] In some embodiments, a material collecting groove 17 is arranged between the material discharging opening 18 and the material blocking plate 16. The material in the hopper 1 falls to the ground through the material discharging opening 18, and the material beyond the paving thickness is blocked by the material blocking plate 16 and stored in the material collecting groove 17. When the material in the material collecting groove 17 is higher than the material discharging opening 18, the material discharging opening 18 is blocked, so as to avoid the continuous discharge of the material in the hopper 1 and reduce the pressure on the material blocking plate 16. In order to uniformly distribute the material sent by the screw conveyor 2 in the hopper 1, a spiral conveying roller 14 is arranged at a position corresponding to the material discharging opening 18 on the inner side of the hopper 1. The spiral conveying blades at both ends of the spiral conveying roller 14 have opposite spiral directions. The spiral conveying roller 14 is driven to rotate, and the material gathered in the middle is pushed to both sides under the action of the spiral conveying roller 14.

[0026] Preferably, the third compression roller 15 is arranged on the side of the material blocking plate 16 away from the material discharging opening 18. Under the action of the third compression roller 15, the hopper 1 can be assisted to support, and the middle paving area can be flattened.

[0027] In some embodiments, the front end of the first paving mechanism 4 and the end of the second paving mechanism 5 away from the first paving mechanism 4 are both provided with a traction mechanism 6. The traction mechanism 6 adopts a tracked walking mechanism, and the second paving mechanism 5 and the first paving mechanism 4 are both rotationally connected with the traction mechanism 6. Preferably, the traction mechanism 6 is fixedly connected with a lifting platform. The lifting platform is fixed on a walking support of the tracked walking mechanism. The lifting platform is fixedly connected with a bearing seat. The movable frame 7 and the vehicle frame 12 are both rotationally connected with the lifting platform through the bearing seat. The lifting platform is arranged to drive the vehicle frame 12 and the movable frame 7 to lift and control the paving thickness.

[0028] The second paving mechanism 5 is rotated to adjust the coverage range of the equipment to adapt to the width of the road surface to be paved; The material is prepared on the road surface to be paved in the paving thickness at a position corresponding to the second paving mechanism 5 in front of the walking direction of the equipment; The equipment is walked along the road by the traction mechanism. The first paving mechanism 4 and the second paving mechanism 5 cooperate to pave the road surface from outside to inside; The excess material is collected by the V-shaped material collecting plate 3 and conveyed into the hopper 1 by the screw conveyor 2; When the equipment walks to the area where the material is insufficient, the material in the hopper 1 falls to the road surface through the material discharging opening 18 to pave the middle road surface.

[0029] The method for paving the roadbed and road surface by using the roadbed and road surface paving equipment described above comprises the following steps: Device width adjustment: according to the design width parameter of the road to be paved, the second paving mechanism 5 is rotated outward or inward relative to the first paving mechanism 4, so that the overall working width formed by the combination of the first paving mechanism 4 and the two second paving mechanisms 5 is adapted to the width of the road to be paved, thereby determining the coverage range of the device; Pre-set area preparation: along the front section of the device walking direction, at the position corresponding to the working area of the second paving mechanism 5, the paving material is uniformly stacked on the road to be paved according to the design paving thickness and the material usage per unit area, and the stacking position is parallel to the device walking track; Towing and paving: the device is towed by the towing mechanism 6 along the pre-set track of the road to be paved at a uniform speed, and under the cooperation of the first paving mechanism 4 and the second paving mechanism 5, the paving operation is carried out in the order from outside to inside: first, the second paving mechanism 5 is used to pave the areas on both sides of the road, and then the first paving mechanism 4 is used to pave the middle area of the road, to ensure the flatness and uniformity of the paving layer; Middle material buffer: during the device walking and paving process, the excess material overflowing in the working area is collected by the V-shaped material collecting plate 3, and the collected material is transported to the hopper 1 for temporary storage by the screw conveyor 2; when the device walks to the area where the middle paving thickness does not meet the design standard due to insufficient material, the temporarily stored material in the hopper 1 is discharged through the discharge port 18 and falls on the middle road area with insufficient thickness, to supplement the material in the area with insufficient thickness, thereby improving the convenience of paving operation and the uniformity of paving layer thickness.

[0030] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A roadbed and pavement paving device, characterized in that, It includes a first paving mechanism (4) and a second paving mechanism (5) rotatably connected to both sides of the first paving mechanism (4); The first paving mechanism (4) includes a frame (12), a V-shaped aggregate plate (3) is fixedly connected to the middle of the frame (12), and a second paving roller (11) and a second pressure roller (10) are provided at both ends of the V-shaped aggregate plate (3) along its extension direction and are rotatably connected to the frame (12). A hopper (1) is provided at one end of the V-shaped aggregate plate (3) away from the second paving roller (11) and is fixedly connected to the frame (12). The hopper (1) is connected to the V-shaped aggregate plate (3) through a screw conveyor (2). A discharge port (18) is horizontally opened at the bottom of the hopper (1), and a baffle plate (16) is fixedly connected at the discharge port (18). The second paving mechanism (5) includes a movable frame (7), which is rotatably connected to the frame (12). A first paving roller (8) and a first pressure roller (9) are rotatably connected to the movable frame (7) along its length direction.

2. The roadbed and pavement paving equipment according to claim 1, characterized in that: The hopper (1) is provided with a support roller (19) that is rotatably connected to the frame (12) below it. The length of the support roller (19) is greater than the width of the V-shaped collecting plate (3).

3. The roadbed and pavement paving equipment according to claim 1, characterized in that: The first paving roller (8) and the second paving roller (11) are both fixedly connected with spiral conveying blades on their outer sides. The spiral directions of the spiral conveying blades at both ends of the first paving roller (8) are opposite.

4. The roadbed and pavement paving equipment according to claim 1, characterized in that: A material collection trough (17) is provided between the discharge port (18) and the baffle plate (16). A spiral conveying roller (14) is provided on the inner side of the hopper (1). The spiral conveying blades at both ends of the spiral conveying roller (14) have opposite spiral directions.

5. The roadbed and pavement paving equipment according to claim 1, characterized in that: The baffle plate (16) is provided with a third pressure roller (15) on the side away from the discharge port (18).

6. The roadbed and pavement paving equipment according to claim 1, characterized in that: The front end of the first paving mechanism (4) and the end of the second paving mechanism (5) away from the first paving mechanism (4) are both provided with a traction mechanism (6), and the movable frame (7) and the vehicle frame (12) are rotatably connected to the traction mechanism (6).

7. The roadbed and pavement paving equipment according to claim 6, characterized in that: A lifting platform is fixedly connected to the traction mechanism (6), and the first paving mechanism (4) and the second paving mechanism (5) are rotatably connected to the lifting platform.

8. A method for laying subgrade and pavement using the subgrade and pavement laying equipment according to any one of claims 1-7, characterized in that, Includes the following steps: Rotate the second paving mechanism (5) to adjust the equipment coverage area to match the width of the road surface to be paved; In the section of road ahead of its direction of travel, at the position corresponding to the second paving mechanism (5), according to the designed paving thickness and the amount of material per unit area, the paving material is piled up on the road surface to be paved along the length of the road surface; The traction mechanism (6) pulls it along the road, and with the cooperation of the first paving mechanism (4) and the second paving mechanism (5), it paves the road surface from the outside to the inside. Excess material is collected by V-shaped collecting plate (3) and conveyed to hopper (1) by screw conveyor (2). When it travels to an area where there is insufficient material, the material in hopper (1) falls to the road surface through discharge port (18) to pave the middle road surface.

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