CN114293441A - Asphalt concrete paving structure for airport pavement and paving method thereof - Google Patents

Asphalt concrete paving structure for airport pavement and paving method thereof Download PDF

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Publication number
CN114293441A
CN114293441A CN202210147543.0A CN202210147543A CN114293441A CN 114293441 A CN114293441 A CN 114293441A CN 202210147543 A CN202210147543 A CN 202210147543A CN 114293441 A CN114293441 A CN 114293441A
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China
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paving
asphalt concrete
asphalt
layer
plate
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CN202210147543.0A
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Chinese (zh)
Inventor
赵茂春
武卫
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Beijing Huachuang Airport Engineering Co ltd
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Beijing Huachuang Airport Engineering Co ltd
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Priority to CN202210147543.0A priority Critical patent/CN114293441A/en
Publication of CN114293441A publication Critical patent/CN114293441A/en
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Abstract

The invention relates to the technical field of airport pavement engineering, and particularly discloses an asphalt concrete pavement structure for an airport pavement and a pavement method thereof. Firstly, mixing asphalt materials to be paved through a mixer, guiding the mixed materials obtained through mixing into integrated paving equipment after the mixing is finished, and transporting the mixed materials to the ground to be paved through the integrated paving equipment; the method comprises the following steps that a stirring mechanism on the integrated type paving equipment is used for continuously stirring a mixture, after the ground is cleaned through a cleaning mechanism on the front side of the integrated type paving equipment, the mixture is paved on the ground through a paving mechanism at the bottom end of the stirring mechanism, and after paving is finished, the paved mixture is paved through a paving mechanism on the rear side of the integrated type paving equipment; after the material is paved through the integrated paving equipment, the asphalt surface cooled to the appropriate temperature is rolled in an all-dimensional mode through the integrated paving equipment.

Description

Asphalt concrete paving structure for airport pavement and paving method thereof
Technical Field
The invention relates to the technical field of airport pavement engineering, in particular to an asphalt concrete pavement structure for an airport pavement and a pavement method thereof.
Background
In recent years, along with the continuous improvement of the requirements of China on the service performance and flight safety of the pavement in air transportation, the asphalt pavement receives more and more attention due to good deformation yield, comfort and smoothness, higher friction force and low noise. However, with the continuous emergence of new generation large passenger planes and the rapid increase of aviation traffic, under the repeated action of load factors and environmental factors, the asphalt concrete pavement structure is easy to generate diseases such as cracks, wheel tracks, loosening, peeling, pits and the like. The aggregate is peeled off and loosened, the tire of the airplane can be seriously damaged, the flight safety is threatened, and only frequent repair and renovation can be carried out, so that the great waste of energy and resources is caused. In view of this, how to improve the wear resistance and service life of the asphalt pavement of the airport becomes a problem to be solved.
Disclosure of Invention
The invention aims to provide an asphalt concrete pavement structure for an airport pavement and a pavement method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an asphalt concrete pavement structure for an airport pavement comprises a ground base layer, a cement gravel layer and an asphalt layer, wherein the cement gravel layer is laid on the ground base layer, and the asphalt layer is laid on the cement gravel layer; the cement gravel layer is laid with an upper layer and a lower layer, the two cement gravel layers respectively comprise gravel aggregates and filling materials, the filling materials are mainly formed by mixing portland cement, water and lime coal cinder, and the filling materials are used for filling gaps of the gravel aggregates; the asphalt layer comprises a thick coarse-grained asphalt concrete layer and a thick fine-grained asphalt concrete layer which are arranged from bottom to top, and a bonding layer is laid between the two layers of asphalt concrete layers.
The invention also provides a paving method of the asphalt concrete for the airport pavement, which comprises the following specific steps:
s1: firstly, mixing asphalt materials to be paved through a mixer, guiding the mixed materials obtained through mixing into integrated paving equipment after the mixing is finished, and transporting the mixed materials to the ground to be paved through the integrated paving equipment;
s2: the method comprises the following steps that a stirring mechanism on the integrated type paving equipment is used for continuously stirring a mixture, after the ground is cleaned through a cleaning mechanism on the front side of the integrated type paving equipment, the mixture is paved on the ground through a paving mechanism at the bottom end of the stirring mechanism, and after paving is finished, the paved mixture is paved through a paving mechanism on the rear side of the integrated type paving equipment;
s3: after the material is paved through the integrated paving equipment, the asphalt surface cooled to the appropriate temperature is rolled in an all-dimensional mode through the integrated paving equipment.
Preferably, integrated form paving equipment is including removing the automobile body, and rabbling mechanism is installed on the top of removing the automobile body, and the front side that removes the automobile body bottom is provided with shovel material mechanism, and the rear side of shovel material mechanism is provided with the mechanism that paves, and the mechanism that paves is installed to the rear side of the mechanism that paves.
Preferably, the material shoveling mechanism comprises a horizontal shoveling plate, the rear end of the horizontal shoveling plate is connected with an aggregate sloping plate, and the aggregate sloping plate and the left and right ends of the horizontal shoveling plate are fixedly connected with aggregate side plates; a material collecting baffle plate with an L-shaped structure is arranged at the rear side of the material collecting inclined plate, and a material collecting cavity is arranged in a cavity formed between the material collecting baffle plate and the material collecting inclined plate; a material collecting groove communicated with the material collecting cavity is formed in the bottom of the material collecting inclined plate, and a fan communicated with the material collecting cavity is arranged on the rear side of the material collecting cavity; the discharge gate has been seted up to the bottom one side in collecting chamber, installs discharge baffle on the discharge gate, and discharge baffle passes through the tool to lock to be fixed on receiving the material baffle.
Preferably, the front side surface of the aggregate inclined plate is connected with a cleaning brush plate through a connecting bracket, and the cleaning brush plate is arranged on the front side of the horizontal shovel plate.
Preferably, the stirring mechanism comprises a water supply tank and a stirring tank which are arranged on the movable vehicle body, the top end of the stirring tank is provided with a stirring motor, the output end of the stirring motor is connected with a stirring shaft, and the stirring shaft is provided with a stirring arm; one side of agitator tank intercommunication inlet tube, the inlet tube passes through water pump intercommunication feed tank.
Preferably, the mechanism of paving sets up including the nozzle that paves, the opening of the nozzle that paves down, and the top intercommunication feeding case of nozzle paves, and the feeding case passes through the discharging pipe intercommunication of feed passage and agitator tank bottom, installs control flap on the discharging pipe.
Preferably, the mechanism of paving is including paving the compression roller, paves the compression roller and all rotate through connecting the pivot and paving the body frame and be connected in both ends about, paves and is equipped with the connection chamber that is used for the installation to pave the compression roller that the opening is down on the body frame, connects the pivot setting on the inner wall about connecting the chamber.
Preferably, all fixedly on the outer wall of the body frame left and right sides of paving be provided with the connection slide, connect the slide and slide from top to bottom and be provided with on the control aircraft bonnet, control aircraft bonnet the left and right sides correspond the connection slide position on offer with the connection spout of connection slide structure adaptation.
Preferably, a plurality of hydraulic cylinders are connected between the outer wall of the top end of the paving main frame and the inner wall of the top end of the control hood at intervals, and control ends of the hydraulic cylinders are connected with a controller.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the asphalt concrete pavement structure for the airport pavement and the pavement method thereof, the pavement structure and the pavement method are improved, so that the paved asphalt concrete has high-strength anti-deformation performance, is not easy to crack and the like in actual use, and has long service life and durability.
2. According to the scheme, when the asphalt concrete material is paved, the integrated paving equipment is adopted to pave the asphalt concrete material, so that a paver and a rolling machine are integrated on the same equipment, the paving cost and time of the asphalt concrete are greatly saved, the paving efficiency and quality are improved, the asphalt material can be paved and pre-pressed while the asphalt concrete is paved, the paving compactness of the material is guaranteed, and the cracking condition is prevented.
Drawings
Fig. 1 is a schematic view of the overall structure of a pavement structure according to embodiment 1 of the present invention;
fig. 2 is a specific structural schematic diagram of an integrated paving apparatus according to embodiment 2 of the present invention;
fig. 3 is a front view of a scooping mechanism of embodiment 2 of the present invention;
fig. 4 is a detailed structural schematic diagram of a shoveling mechanism according to embodiment 2 of the invention;
fig. 5 is a specific structural diagram of the paving mechanism according to embodiment 2 of the present invention.
In the figure: 1. a ground substrate; 2. a cement crushed stone layer; 3. an asphalt layer; 4. a bonding layer; 5. an integrated paving apparatus; 6. moving the vehicle body; 7. a horizontal shovel plate; 8. an aggregate sloping plate; 9. a material receiving baffle plate; 10. a material collecting cavity; 11. a material collecting groove; 12. a fan; 13. a water supply tank; 14. a stirring tank; 15. a stirring motor; 16. a stirring shaft; 17. a stirring arm; 18. spreading a nozzle; 19. a feeding box; 20. paving a press roller; 21. paving the main frame; 22. a connecting cavity; 23. connecting a sliding plate; 24. a control hood; 25. a hydraulic cylinder; 26. cleaning a brush board; 27. and a discharge baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Any one embodiment of the present invention is described below in conjunction with figures 1-5 for further illustration:
example 1: an asphalt concrete pavement structure for an airport pavement comprises a ground base layer 1, a cement gravel layer 2 and an asphalt layer 3, wherein the cement gravel layer 2 is laid on the ground base layer 1, and the asphalt layer 3 is laid on the cement gravel layer 2; an upper layer and a lower layer are laid on the cement gravel layer 2, the two cement gravel layers 2 respectively comprise gravel aggregates and filling materials, the filling materials are mainly formed by mixing portland cement, water and lime coal cinder, and the filling materials are used for filling gaps of the gravel aggregates; the asphalt layer 3 comprises a thick coarse-grained asphalt concrete layer and a thick fine-grained asphalt concrete layer which are arranged from bottom to top, and a bonding layer 4 is laid between the two layers of asphalt concrete layers.
The invention also provides a paving method of the asphalt concrete for the airport pavement, which comprises the following specific steps:
s1: firstly, mixing the asphalt material to be paved by a mixer, introducing the mixed material obtained by mixing into a paver after the mixing is finished, and transporting the mixed material to the ground to be paved by the paver;
s2: paving the mixture on the ground by a paver;
s3: and carrying out all-dimensional rolling treatment on the asphalt surface cooled to the proper temperature by a rolling machine.
Example 2: an asphalt concrete pavement structure for an airport pavement comprises a ground base layer 1, a cement gravel layer 2 and an asphalt layer 3, wherein the cement gravel layer 2 is laid on the ground base layer 1, and the asphalt layer 3 is laid on the cement gravel layer 2; an upper layer and a lower layer are laid on the cement gravel layer 2, the two cement gravel layers 2 respectively comprise gravel aggregates and filling materials, the filling materials are mainly formed by mixing portland cement, water and lime coal cinder, and the filling materials are used for filling gaps of the gravel aggregates; the asphalt layer 3 comprises a thick coarse-grained asphalt concrete layer and a thick fine-grained asphalt concrete layer which are arranged from bottom to top, and a bonding layer 4 is laid between the two layers of asphalt concrete layers.
The invention also provides a paving method of the asphalt concrete for the airport pavement, which comprises the following specific steps:
s1: firstly, mixing asphalt materials to be paved through a mixer, guiding the mixed materials obtained through mixing into an integrated paving device 5 after the mixing is finished, and transporting the mixed materials to the ground to be paved through the integrated paving device 5;
s2: the method comprises the following steps of continuously stirring a mixture through a stirring mechanism on the integrated paving equipment 5, cleaning the ground through a cleaning mechanism on the front side of the integrated paving equipment 5, paving the mixture on the ground through a paving mechanism at the bottom end of the stirring mechanism, and paving the paved mixture through a paving mechanism on the rear side of the integrated paving equipment 5 after paving is finished;
s3: after the material is paved by the integrated paving equipment 5, the asphalt surface cooled to the proper temperature is rolled in an all-around way by the integrated paving equipment 5.
Further, integrated form paving equipment 5 is including removing automobile body 6, and rabbling mechanism is installed on the top of removing automobile body 6, and the front side of removing the 6 bottoms of automobile body is provided with shovel material mechanism, and the rear side of shovel material mechanism is provided with the mechanism that paves, and the mechanism that paves is installed to the rear side of the mechanism that paves.
Further, the material shoveling mechanism comprises a horizontal shoveling plate 7, the rear end of the horizontal shoveling plate 7 is connected with a material collecting inclined plate 8, and the material collecting inclined plate 8 and the left and right ends of the horizontal shoveling plate 7 are fixedly connected with material collecting side plates; a material collecting baffle 9 with an L-shaped structure is arranged at the rear side of the material collecting inclined plate 8, and a material collecting cavity 10 is arranged in a cavity formed between the material collecting baffle 9 and the material collecting inclined plate 8; the bottom of the collecting sloping plate 8 is provided with a collecting groove 11 communicated with the collecting cavity 10, and the rear side of the collecting cavity 10 is provided with a fan 12 communicated with the collecting cavity.
Further, a discharge hole is formed in one side of the bottom of the material collecting cavity 10, a discharge baffle 27 is installed on the discharge hole, and the discharge baffle 27 is fixed on the material collecting baffle 9 through a lock.
Furthermore, a cleaning brush plate 26 is connected to the front side surface of the aggregate sloping plate 8 through a connecting bracket, and the cleaning brush plate 26 is arranged on the front side of the horizontal shovel plate 7.
Further, the stirring mechanism comprises a water supply tank 13 and a stirring tank 14 which are arranged on the movable vehicle body 6, a stirring motor 15 is arranged at the top end of the stirring tank 14, the output end of the stirring motor 15 is connected with a stirring shaft 16, and a stirring arm 17 is arranged on the stirring shaft 16; one side of the stirring tank 14 is communicated with a water inlet pipe, and the water inlet pipe is communicated with the water supply tank 13 through a water pump.
Further, the mechanism of paving is including the nozzle 18 that paves, and the opening of the nozzle 18 that paves sets up down, and the top intercommunication feeding box 19 of nozzle 18 paves, and feeding box 19 is through the discharging pipe intercommunication of feed channel with agitator tank 14 bottom, installs control valve on the discharging pipe.
Further, the mechanism of paving is including paving the compression roller 20, and both ends all rotate through connecting the pivot and paving the body frame 21 and be connected about paving the compression roller 20, paves and is equipped with the connection chamber 22 that is used for the installation of opening decurrent paving compression roller 20 on the body frame 21, connects the pivot setting on connecting the inner wall about chamber 22.
Furthermore, all fixedly on the outer wall of the paving body frame 21 left and right sides be provided with the connection slide 23, connect slide 23 slide from top to bottom be provided with control aircraft bonnet 24 on, control aircraft bonnet 24's the left and right sides correspond the connection slide 23 position on offer with the connection spout of connecting slide 23 structure adaptation.
Further, a plurality of hydraulic cylinders 25 are connected between the top outer wall of the paving main frame 21 and the top inner wall of the control hood 24 at intervals, and the control ends of the hydraulic cylinders 25 are connected with a controller.
In this embodiment: when the asphalt concrete material is paved, the integrated paving equipment is adopted to pave the asphalt concrete material. The stirring motor 15 on the moving vehicle body 6 drives the stirring shaft 16 and the stirring arm 17 to continuously rotate, and then the asphalt mixture in the stirring tank 14 is continuously stirred. When moving automobile body 6 and removing forward, clean the back through cleaning brush board 26 to subaerial partial impurity earlier, shovel partial impurity through horizontal shovel board 7, simultaneously, through the cooperation of fan 12, with partial impurity suction to the swash plate 8 that gathers materials on, in 11 entering collecting chamber 10 of the silo that gathers materials that set up through 8 bottoms of the swash plate that gathers materials to this reaches the clear purpose in ground.
Paving asphalt materials on the ground cleaned by the material shoveling mechanism through the paving mechanism; the control valve on the feed pipe is opened so that the material in the mixing tank 14 enters the spreading nozzle 18 through the feed channel and is spread to the ground via the spreading nozzle 18.
Paving the asphalt material after finishing, paving and pre-pressing the asphalt layer 3 on the ground by the paving and pressing roller 20 at the rear side of the movable vehicle body 6, so that the asphalt layer 3 keeps certain compactness.
After the asphalt is completely paved, the hydraulic cylinder 25 is used for controlling the height of the paving main frame 21 to be reduced, the rolling pressure of the paving press roller 20 is increased, and then the asphalt material cooled on the ground is rolled by the movable vehicle body 6, so that the asphalt layer 3 is prevented from cracking.
The embodiment 2 is the same as the paving material and the structure of the embodiment 1, and the difference is the paving method.
The airport pavement paved by the paving structure and the paving method described in the embodiment 1-2 is tested for wear resistance, service life, and crack resistance, and the results are evaluated by A, B, C, D, as shown in the following table:
sample (I) Wear resistance Service life Cracking resistance
Example 1 A B B
Example 2 A A A
As can be seen from the table, the airport pavement paved according to the paving structure and the paving method in example 2 has better wear resistance, service life and anti-cracking effect.
It is worth noting that: the whole device realizes control to the device through the controller, and the controller is common equipment and belongs to the existing mature technology, and the electrical connection relation and the specific circuit structure of the controller are not repeated herein.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides an airport is asphalt concrete pavement structure for pavement which characterized in that: the asphalt cement floor comprises a ground base layer (1), a cement gravel layer (2) and an asphalt layer (3), wherein the cement gravel layer (2) is laid on the ground base layer (1), and the asphalt layer (3) is laid on the cement gravel layer (2); an upper layer and a lower layer are laid on the cement gravel layer (2), the two cement gravel layers (2) both comprise gravel aggregates and filling materials, the filling materials are mainly formed by mixing portland cement, water and lime coal cinder, and the filling materials are used for filling gaps of the gravel aggregates; the asphalt layer (3) comprises a thick coarse-grained asphalt concrete layer and a thick fine-grained asphalt concrete layer which are arranged from bottom to top, and a bonding layer (4) is laid between the two layers of asphalt concrete layers.
2. The method for paving the asphalt concrete for the airport pavement according to claim 1, wherein the method comprises the following steps: the method comprises the following specific steps:
s1: firstly, mixing asphalt materials to be paved through a mixer, guiding the mixed materials obtained through mixing into integrated paving equipment (5) after the mixing is finished, and transporting the mixed materials to the ground to be paved through the integrated paving equipment (5);
s2: the method comprises the following steps of continuously stirring a mixture through a stirring mechanism on the integrated paving equipment (5), after the ground is cleaned through a cleaning mechanism on the front side of the integrated paving equipment (5), paving the mixture on the ground through a paving mechanism at the bottom end of the stirring mechanism, and after paving is finished, paving the paved mixture through a paving mechanism on the rear side of the integrated paving equipment (5);
s3: after the material is paved through the integrated paving equipment (5), the asphalt surface cooled to the proper temperature is rolled in an all-around way through the integrated paving equipment (5).
3. The method for paving the asphalt concrete for the airport pavement according to claim 2, wherein the method comprises the following steps: integrated form equipment of paving (5) is including removing automobile body (6), and the rabbling mechanism is installed on the top of removing automobile body (6), and the front side that removes automobile body (6) bottom is provided with shovel material mechanism, and the rear side of shovel material mechanism is provided with the mechanism that paves, and the mechanism that paves is installed to the rear side of the mechanism that paves.
4. The method for paving the asphalt concrete for the airport pavement according to claim 3, wherein the method comprises the following steps: the material shoveling mechanism comprises a horizontal shoveling plate (7), the rear end of the horizontal shoveling plate (7) is connected with an aggregate sloping plate (8), and the aggregate sloping plate (8) and the left and right ends of the horizontal shoveling plate (7) are fixedly connected with aggregate side plates; a material collecting baffle plate (9) with an L-shaped structure is arranged at the rear side of the material collecting inclined plate (8), and a material collecting cavity (10) is arranged in a cavity formed between the material collecting baffle plate (9) and the material collecting inclined plate (8); a material collecting groove (11) communicated with a material collecting cavity (10) is formed in the bottom of the material collecting inclined plate (8), and a fan (12) communicated with the material collecting cavity (10) is installed on the rear side of the material collecting cavity; a discharge hole is formed in one side of the bottom of the collecting cavity (10), a discharge baffle (27) is installed on the discharge hole, and the discharge baffle (27) is fixed on the material receiving baffle (9) through a lock.
5. The method for paving the asphalt concrete for the airport pavement according to claim 4, wherein the method comprises the following steps: the front side of the collecting sloping plate (8) is connected with a cleaning brush plate (26) through a connecting bracket, and the cleaning brush plate (26) is arranged on the front side of the horizontal shovel plate (7).
6. The method for paving the asphalt concrete for the airport pavement according to claim 3, wherein the method comprises the following steps: the stirring mechanism comprises a water supply tank (13) and a stirring tank (14) which are arranged on the movable vehicle body (6), the top end of the stirring tank (14) is provided with a stirring motor (15), the output end of the stirring motor (15) is connected with a stirring shaft (16), and a stirring arm (17) is arranged on the stirring shaft (16); one side of the stirring tank (14) is communicated with a water inlet pipe, and the water inlet pipe is communicated with a water supply tank (13) through a water pump.
7. The method for paving the asphalt concrete for the airport pavement according to claim 3, wherein the method comprises the following steps: the mechanism of paving is including the nozzle (18) that paves, and the opening of nozzle (18) of paving sets up down, and the top intercommunication feeding case (19) of nozzle (18) paves, and feeding case (19) are through the discharging pipe intercommunication of feed channel with agitator tank (14) bottom, install control flap on the discharging pipe.
8. The method for paving the asphalt concrete for the airport pavement according to claim 3, wherein the method comprises the following steps: the mechanism of paving is including paving press roll (20), and both ends all rotate through connecting the pivot and paving body frame (21) and are connected about paving press roll (20), are equipped with connection chamber (22) that are used for the installation of opening decurrent paving press roll (20) on paving body frame (21), connect the pivot setting on the inner wall about connecting chamber (22).
9. The method for paving the asphalt concrete for the airport pavement according to claim 8, wherein: the outer wall of the left side and the right side of the paving main frame (21) is fixedly provided with a connecting sliding plate (23), the connecting sliding plate (23) is arranged on a control hood (24) in a vertically sliding mode, and the left side and the right side of the control hood (24) are correspondingly provided with connecting sliding grooves matched with the structure of the connecting sliding plate (23) in positions of the connecting sliding plate (23).
10. The method for paving the asphalt concrete for the airport pavement according to claim 8, wherein: a plurality of hydraulic cylinders (25) are connected between the outer wall of the top end of the paving main frame (21) and the inner wall of the top end of the control hood (24) at intervals, and the control ends of the hydraulic cylinders (25) are connected with a controller.
CN202210147543.0A 2022-02-17 2022-02-17 Asphalt concrete paving structure for airport pavement and paving method thereof Pending CN114293441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210147543.0A CN114293441A (en) 2022-02-17 2022-02-17 Asphalt concrete paving structure for airport pavement and paving method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210147543.0A CN114293441A (en) 2022-02-17 2022-02-17 Asphalt concrete paving structure for airport pavement and paving method thereof

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Publication Number Publication Date
CN114293441A true CN114293441A (en) 2022-04-08

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008005014A1 (en) * 2006-07-06 2008-01-10 The Scott Fetzer Company Spot sweeper with powered suction unit
CN201351254Y (en) * 2009-01-09 2009-11-25 长沙理工大学 Combined type pavement structure base on breakage cement concrete
CN111021178A (en) * 2019-12-04 2020-04-17 东南大学 Cement-stabilized anti-crack base newly-built pavement structure and construction method and application thereof
CN211472345U (en) * 2019-07-30 2020-09-11 重庆华筑建筑设计集团有限公司 Road engineering dust cleaning device
CN213925758U (en) * 2020-11-05 2021-08-10 李秋佐 Highway engineering road surface pitch device that paves
CN214530076U (en) * 2021-01-21 2021-10-29 马凯 Pitch laying device of municipal works building
CN215051862U (en) * 2021-07-15 2021-12-07 中交第四航务工程有限公司 Asphalt paving device with dust fall function for adjusting paving thickness
CN215758372U (en) * 2021-10-09 2022-02-08 安徽皖阔建设工程有限公司 Energy-saving asphalt paver for highway engineering

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008005014A1 (en) * 2006-07-06 2008-01-10 The Scott Fetzer Company Spot sweeper with powered suction unit
CN201351254Y (en) * 2009-01-09 2009-11-25 长沙理工大学 Combined type pavement structure base on breakage cement concrete
CN211472345U (en) * 2019-07-30 2020-09-11 重庆华筑建筑设计集团有限公司 Road engineering dust cleaning device
CN111021178A (en) * 2019-12-04 2020-04-17 东南大学 Cement-stabilized anti-crack base newly-built pavement structure and construction method and application thereof
CN213925758U (en) * 2020-11-05 2021-08-10 李秋佐 Highway engineering road surface pitch device that paves
CN214530076U (en) * 2021-01-21 2021-10-29 马凯 Pitch laying device of municipal works building
CN215051862U (en) * 2021-07-15 2021-12-07 中交第四航务工程有限公司 Asphalt paving device with dust fall function for adjusting paving thickness
CN215758372U (en) * 2021-10-09 2022-02-08 安徽皖阔建设工程有限公司 Energy-saving asphalt paver for highway engineering

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Application publication date: 20220408