An airport pavement cement kneading device and method

Abstract

The application relates to the technical field of airport pavement construction, in particular to an airport pavement cement kneading device and method. The device comprises a controller, two parallelly arranged guide rails, a fixed plate arranged above the guide rails, a driving mechanism connecting the fixed plate with the guide rails, and a slurry compactness detection mechanism, a slurry surface transverse mixing mechanism, a slurry surface longitudinal mixing mechanism and a kneading mechanism arranged on the fixed plate in sequence along the front-rear direction. The method comprises the steps of slurry compactness detection, stirring and mixing, kneading and kneading. The application solves the problem of quality defects of the airport pavement slab caused by the uneven compactness of the slurry surface, improves the existing kneading technology, and can significantly improve the construction quality of the airport pavement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of airport pavement construction technology, in particular to an airport pavement cement kneading device and method. BACKGROUND

[0002] At present, in the flight area runway engineering of newly built and expanded airports in China, cement concrete pavement is basically used, which has the characteristics of good durability, high strength, long service life and high integrity. In construction, the quality of the rolling bar kneading process directly affects the thickness and uniformity of the cement concrete surface mortar, thereby determining the flatness, texture depth, durability and service life of the pavement slab.

[0003] However, as the rolling bar reciprocating rolling and pushing and pulling kneading method in the traditional construction process, only simple rolling bar is used for kneading work, which has simple structure and single function, and cannot meet the needs of high-quality airport pavement. Specifically, as shown in the figure, after the mortar is distributed into the pavement mold, the surface of the mortar is not flat and has many protruding parts. During the kneading process, only the protruding parts are pressed into the mortar, which will cause several local areas with high density on the top of the mortar, and further cause uneven density on the surface of the mortar, affecting the quality of the subsequent pavement forming. Since airport pavement involves a major safety field, the above problems need to be improved. Figure 4 SUMMARY

[0004] Based on the problems in the prior art, the present application provides an airport pavement cement kneading device and method, which can knead the mortar on the basis of uniform surface density and can be used to prepare high-quality airport pavement.

[0005] To solve the above problems, the technical scheme of the present application is as follows:

[0006] An airport pavement cement kneading device, comprising a controller, two parallelly arranged guide rails, a fixed plate arranged above the guide rails, the fixed plate being connected with the guide rails through a driving mechanism, the fixed plate being provided with, in sequence from front to back, a mortar density detection mechanism, a mortar surface transverse mixing mechanism, a mortar surface longitudinal mixing mechanism and a kneading mechanism, the controller being electrically connected with a power supply and being electrically connected with the driving mechanism, the mortar density detection mechanism, the mortar surface transverse mixing mechanism, the mortar surface longitudinal mixing mechanism and the kneading mechanism through wires.

[0007] ​Preferably, the guide rail is arranged outside the pavement formwork, the upper end of the guide rail is slidably connected with a sliding plate, the top end of the sliding plate is fixedly connected with the side end of the fixed plate through an L-shaped connecting plate, the driving mechanism comprises servo motors arranged on the sliding plates on both sides, the servo motors are fixed on the upper end of the sliding plate, and output shafts are rotatably penetrated through the sliding plate and fixedly connected with driving gears, the outer surface of the guide rail is embedded with a rack structure along the length direction, the driving gears are in meshing connection with the rack structure, and the bottom of the sliding plates on both sides is further rotatably connected with driven gears through longitudinal shafts, the driven gears are in meshing connection with the rack structure, and the two servo motors are electrically connected with the controller through wires and synchronously act under the control of the controller.

[0008] Preferably, the slurry compactness detection mechanism comprises a plurality of first electric cylinders arranged side by side on the front end of the fixed plate along the left-right direction, the first electric cylinders are arranged along the longitudinal direction, the cylinder barrels of the first electric cylinders penetrate through the fixed plate and are fixedly connected with the fixed plate, the end of the piston rod of the first electric cylinder is connected with a pressing plate through a pressure sensor, the pressing plate is a rectangular plate, the adjacent pressing plates are gap-fitted, the first electric cylinders are electrically connected with the controller through wires, and the slurry compactness detection mechanism detects the compactness of the slurry surface under the control of the controller and performs slurry pressing operation on the slurry surface under the control of the controller through the pressing plate.

[0009] Preferably, the slurry surface transverse mixing mechanism comprises a linear driving mechanism and a moving seat, the linear driving mechanism drives the moving seat to move along the left-right direction, the top end of the moving seat is slidably connected with the bottom end of the fixed plate, the bottom end of the moving seat is fixedly provided with a second electric cylinder along the longitudinal direction, the fixed end of the second electric cylinder is fixedly connected with the moving seat, and the telescopic end is rotatably connected with a stirring roller through a roller support, the stirring roller comprises a roller body one and a plurality of first stirring rods uniformly distributed on the surface of the roller body one, and the second electric cylinder is electrically connected with the controller through wires.

[0010] Preferably, the two ends of the roller body one are rotatably connected with the roller support, one end of the roller support is fixedly provided with a speed reducer one, the output shaft of the speed reducer one is fixedly connected with the end of the central shaft of the roller body one, and the speed reducer one is electrically connected with the controller through wires.

[0011] Preferably, the linear driving mechanism comprises a lead screw rotatably connected between vertical sections of the two L-shaped connecting plates along the left-right direction, the moving seat is screwed with the lead screw, the outer side end of the vertical section is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with the end of the lead screw, and the driving motor is electrically connected with the controller through wires.

[0012] Preferably, the longitudinal mixing mechanism of the slurry surface comprises a mixing cylinder arranged in the left-right direction, the mixing cylinder comprises a second cylinder body, the outer surface of the second cylinder body is uniformly distributed with a plurality of second stirring rods, the two ends of the second cylinder body are respectively rotatably connected with mounting plates one, the top end of the mounting plate one penetrates through the fixed plate and is fixedly connected with the fixed plate through a limiting nut, the outer surface of the mounting plate one is fixedly provided with a second speed reducer motor, the output shaft of the second speed reducer motor is fixedly connected with the roller shaft end of the second cylinder body, the second speed reducer motor is electrically connected with the controller through wires, and the width of the mixing cylinder is matched with the airport pavement construction width.

[0013] Preferably, the kneading mechanism comprises a kneading cylinder arranged in the left-right direction, the kneading cylinder comprises a third cylinder body, the two ends of the third cylinder body are respectively rotatably connected with mounting plates two, the top end of the mounting plate two is fixedly connected with a second wire screw rod arranged in the longitudinal direction, and the two second wire screw rods penetrate through the fixed plate and are fixedly connected with the fixed plate through limiting nuts, the outer surface of the mounting plate two is fixedly provided with a motor, the output shaft of the motor is fixedly connected with the center shaft end of the third cylinder body, and the motor is electrically connected with the controller through wires.

[0014] A use method of the airport pavement cement kneading device, comprising the following steps:

[0015] S1: arranging the device at the construction position of the airport pavement, arranging the guide rails on both sides of the pavement template, arranging the fixed plate opposite to the slurry distribution area of the pavement, and adjusting the surface of the guide rail to be parallel to the top of the preset airport pavement;

[0016] S2: controlling the driving mechanism to move the pressing plate to the starting position of the preliminarily leveled slurry, starting the first electric cylinders, extending the first electric cylinders by the same set length, recording the data of the pressure sensors installed on the electric cylinders by the controller, judging the position with high pressure value as the area with high density, and judging the position with low pressure value as the area with low density;

[0017] S3: controlling the first electric cylinders to perform synchronous and repeated extension and contraction actions, so that the pressing plate performs the slurry pressing action by beating the slurry surface with the same amplitude, when the values detected by the pressure sensors are within the set error range, it is considered that the slurry density of the slurry area where the pressing plate is located is uniform through the slurry pressing action, otherwise, after a set number of slurry pressing actions, the pressure value detected by the area corresponding to the pressing plate is higher than the pressure detection value of the area where the other pressing plates are located, and the value is higher than the set value, and the area with high pressure value is recorded as the area with high density and to be processed;

[0018] S4: the driving mechanism drives the fixed plate to move forward according to the length data of the pressing plate, slurry density is detected after each step, and finally the high-density and to-be-processed area is recorded; the high-density and to-be-processed area is recorded according to the position of the high-density and to-be-processed area relative to the length direction of the guide rail according to the rotating speed of the servo motor, and the position of the high-density and to-be-processed area along the width direction between the two guide rails is recorded according to the sequence of the left and right directions of each pressing plate;

[0019] S5: after the device moves to the set position, the controller draws a distribution map of the high-density and to-be-processed area according to the preset program;

[0020] S6: under the driving of the driving mechanism, the device moves reversely, in the moving process, the second speed reduction motor drives the second roller body to rotate to perform longitudinal stirring on the high-density and to-be-processed area and the surrounding area thereof; the first speed reduction motor drives the first roller body to rotate to perform transverse stirring on the high-density and to-be-processed area and the surrounding area thereof; in this process, the high-density and to-be-processed area is first stirred longitudinally, and then the high-density and to-be-processed area stirred longitudinally is processed transversely;

[0021] S7: after the device moves to the starting position, steps S1-S5 are repeated, if there is still a high-density and to-be-processed area, steps S5 and S6 are continued to be completed, and then steps S1-S5 are repeated until there is no high-density and to-be-processed area in step S5, the device returns to the starting position, the first stirring rod is separated from the surface of the slurry by retracting the first roller body through the second electric cylinder, the second roller body and the second stirring rod are separated from the surface of the slurry by adjusting, then the third roller body is adjusted to the preset height of the airport pavement, the third roller body is moved by the driving mechanism to perform rolling and kneading operations.

[0022] Preferably, in step S7, the motor locks the third roller body to prevent the third roller body from rotating during rolling, and the motor unlocks the third roller body to allow the third roller body to naturally roll with the surface of the slurry during kneading.

[0023] The airport pavement cement kneading device and method has the following beneficial effects:

[0024] The present application solves the problem of quality defects of the airport pavement caused by uneven density of the slurry surface, improves the existing kneading technology, and significantly improves the construction quality of the airport pavement. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The front view structural schematic diagram of the device of the present application;

[0026] Figure 2 The side view structural sectional view of the device of the present application;

[0027] Figure 3 A top view of the device of the present invention;

[0028] Figure 4 A schematic diagram illustrating the principle of uneven density on the surface of the slurry;

[0029] Figure 5 The controller of this invention generates a distribution map of areas with high surface density of slurry and areas to be treated, based on a preset program.

[0030] Figure 6 A schematic diagram of the kneading roller of the present invention.

[0031] 1: Guide rail; 2: Pavement template; 3: Slurry; 31: Accumulated mortar; 32: High-density area; 4: Servo motor; 5: Rack and pinion structure; 6: Fixed plate; 7: L-shaped connecting plate; 8: Sliding plate; 9: First electric cylinder; 10: Pressure sensor; 11: Pressure plate; 12: Lead screw; 13: Drive motor; 14: Mixing drum; 15: Second geared motor; 16: Second stirring rod; 17: Moving seat; 18: Second electric cylinder; 19: Mixing drum; 20: First threaded screw; 21: Limit nut; 22: Drive gear; 23: Driven gear; 24: First stirring rod; 25: Kneading drum; 26: Electric motor; 27: Second threaded screw. Detailed Implementation

[0032] The following description provides a detailed explanation of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limiting this invention.

[0034] Example 1

[0035] An airport pavement cement kneading device, such as Figures 1-6As shown, the device includes a controller, two parallel guide rails 1, and a fixing plate 6 above the guide rails 1. The fixing plate 6 is connected to the guide rails 1 via a drive mechanism. The fixing plate 6 is provided with a slurry density detection mechanism, a slurry surface transverse mixing mechanism, a slurry surface longitudinal mixing mechanism, and a kneading mechanism in sequence along the front-back direction. The controller is electrically connected to a power source and is electrically connected to the drive mechanism, the slurry density detection mechanism, the slurry surface transverse mixing mechanism, the slurry surface longitudinal mixing mechanism, and the kneading mechanism via wires.

[0036] In this embodiment, the function of the slurry density testing mechanism is:

[0037] 1. Initial detection revealed uneven density on the surface of the grout, and the density of each area was adjusted through grouting.

[0038] 2. Finally, areas with high surface density of the slurry that need to be treated are selected.

[0039] The density is represented by the pressure value detected by the pressure sensor; a higher pressure value indicates higher density, and vice versa. The grouting process involves repeatedly tapping the surface of the grout to disperse the mortar in areas of high density, thereby reducing the excessive density in those areas and achieving initial uniformity of density across all locations.

[0040] Ultimately, locations with high density that cannot be uniformly adjusted through grouting are recorded as areas with high grout surface density that require treatment. Through comprehensive testing, a distribution map of these areas with high grout surface density can be created, thus achieving a complete understanding of the grout surface density distribution on airport pavement.

[0041] The transverse mixing mechanism and the longitudinal mixing mechanism on the surface of the slurry are used to stir the areas with high density selected and their surroundings to achieve uniform density on the surface of the slurry. After the density is adjusted to be uniform, the slurry kneading mechanism is used to perform slurry kneading and rolling operations.

[0042] It should be noted that, as Figure 4 As shown, due to uneven distribution of the mortar or the inability to achieve sufficient leveling during the leveling process, mortar 31 accumulates on the surface of the slurry 3. After being kneaded or rolled by the kneading mechanism, the accumulated mortar 31 is merely pressed below the surface of the slurry, resulting in a region 32 with high density on the surface of the slurry. This region 32 with high density only appears at a certain position on the surface of the slurry and floats on the upper layer of the slurry. Therefore, this uneven density phenomenon can easily lead to a decline in the quality of the airport pavement.

[0043] Example 2

[0044] Based on Example 1, this example is improved as follows: Figures 1-3As shown, the guide rails 1 are respectively located on the outside of the pavement template 2. The upper end of the guide rail 1 is slidably connected to a sliding plate 8. The top end of the sliding plate 8 is fixedly connected to the side end of the fixed plate 6 through an L-shaped connecting plate 7. The driving mechanism includes servo motors 4 located on the sliding plates 8 on both sides.

[0045] The servo motor 4 is fixed to the upper end of the sliding plate 8, and the output shaft can rotatably pass through the sliding plate 8 and is fixedly connected to the drive gear 22. The outer surface of the guide rail 1 is embedded with a rack structure 5 along the length direction. The drive gear 22 is meshed with the rack structure 5. The bottom of the sliding plates 8 on both sides is also rotatably connected to the driven gear 23 through the longitudinal axis. The driven gear 23 is meshed with the rack structure 5. The two servo motors 4 are electrically connected to the controller through wires and move synchronously under the control of the controller.

[0046] Example 3

[0047] Based on embodiments 1 and 2, this embodiment is improved as follows: Figures 1-3 As shown, the slurry density detection mechanism includes several first electric cylinders 9 arranged side by side at the front end of the fixed plate 6 in the left-right direction. The first electric cylinders 9 are arranged in the longitudinal direction. The cylinder barrel of the first electric cylinder 9 passes through the fixed plate 6 and is fixedly connected to the fixed plate 6. The piston rod end of the first electric cylinder 9 is connected to a pressure plate 11 through a pressure sensor 10.

[0048] The pressure plate 11 is a rectangular plate, and adjacent pressure plates 11 are fitted with a gap. The first electric cylinder 9 is electrically connected to the controller through a wire. The slurry density detection mechanism detects the density of the slurry surface under the control of the controller, and performs slurry pressing operation on the slurry surface through the pressure plate 11 under the control of the controller.

[0049] Example 4

[0050] Based on embodiments 1, 2, and 3, this embodiment is improved as follows: Figures 1-3 As shown, the slurry surface transverse mixing mechanism includes a linear drive mechanism and a moving seat 17. The linear drive mechanism drives the moving seat 17 to move in the left-right direction. The top of the moving seat 17 is slidably connected to the bottom of the fixed plate 6. A second electric cylinder 18 is fixedly mounted on the bottom of the moving seat 17 in the longitudinal direction. The fixed end of the second electric cylinder 18 is fixedly connected to the moving seat 17, and the telescopic end is rotatably connected to a stirring drum 19 through a drum bracket. The stirring drum 19 includes a drum body and a plurality of first stirring rods 24 evenly distributed on the surface of the drum body. The second electric cylinder 18 is electrically connected to a controller through a wire.

[0051] like Figure 1As shown, the two ends of the roller body are rotatably connected to the roller bracket. One end of the roller bracket is fixedly equipped with a geared motor (not marked in the figure). The output shaft of the geared motor is fixedly connected to the end of the central shaft of the roller body. The geared motor is electrically connected to the controller through a wire.

[0052] like Figures 1-3 As shown, the linear drive mechanism includes a lead screw 12 that is rotatably connected between the vertical sections of two L-shaped connecting plates 7 in the left-right direction. The movable seat 17 is screwed to the lead screw 12. A drive motor 13 is fixedly connected to the outer end of the vertical section. The output shaft of the drive motor 13 is fixedly connected to the end of the lead screw 12. The drive motor 13 is electrically connected to the controller through a wire.

[0053] In this embodiment, the second electric cylinder is used to adjust the height of the mixing drum 19, the geared motor is used to control the rotation speed of the mixing drum 19, and the linear drive mechanism is used to move the mixing drum 19 in the left and right directions to achieve lateral mixing of the surface density of the slurry.

[0054] Example 5

[0055] Based on embodiments 1, 2, 3, and 4, this embodiment is improved as follows:

[0056] like Figures 1-3 As shown, the longitudinal mixing mechanism for the slurry surface includes a mixing drum 14 arranged in the left-right direction. The mixing drum 14 includes a drum body 2. Several second stirring rods 16 are evenly distributed on the outer surface of the drum body 2. Mounting plates 1 are rotatably connected to both ends of the drum body 2. The top end of mounting plate 1 passes through a fixed plate 6 via a threaded screw 20 and is fixed to the fixed plate 6 by limiting nuts 21 (there are two limiting nuts, respectively located on the threaded screws at the upper and lower ends of the fixed plate). A second reduction motor 15 is fixedly mounted on the outer surface of the mounting plate 1. The output shaft of the second reduction motor 15 is fixedly connected to the end of the roller shaft of the drum body 2. The second reduction motor 15 is electrically connected to a controller via wires. The width of the mixing drum 14 matches the construction width of the airport pavement. The second reduction motor 14 drives the mixing drum 14 to rotate and stirs and mixes the slurry surface longitudinally.

[0057] Example 6

[0058] Based on embodiments 1, 2, 3, 4, and 5, this embodiment is improved as follows:

[0059] like Figures 1-3As shown in Figure 6, the kneading mechanism includes a kneading roller 25 arranged in a left-right direction. The kneading roller 25 includes a roller body 3. Mounting plates 2 are rotatably connected to both ends of the roller body 3. A longitudinally arranged threaded screw 27 is fixedly connected to the top of the mounting plate 2. Two threaded screws 27 penetrate the mounting plate 6 and are fixed relative to the mounting plate 6 by limiting nuts (there are two limiting nuts, respectively located on the threaded screws 2 at the upper and lower ends of the mounting plate). A motor 26 is fixedly mounted on the outer surface of the mounting plate 2. The output shaft of the motor 26 is fixedly connected to the end of the central shaft of the roller body 3. The motor 26 is electrically connected to a controller via wires. The motor is used to lock or unlock the roller body 3.

[0060] Example 7

[0061] Based on the above embodiments, this embodiment discloses a method for using an airport pavement cement kneading device, such as... Figures 1-6 As shown, it includes the following steps:

[0062] S1: Place the device at the construction location of the airport pavement, so that the guide rail 1 is located on both sides of the pavement template 2, the fixing plate 6 is facing the slurry application area of ​​the pavement, and adjust the surface of the guide rail to be parallel to the preset top of the airport pavement.

[0063] S2: The controller controls the drive mechanism to move the pressure plate 11 to the starting position of the slurry 3 after initial leveling, and starts the first electric cylinder. Each first electric cylinder 9 extends by the same set length. The controller records the data of the pressure sensor installed in each electric cylinder and determines that the position with high pressure value is the area with high density and the position with low pressure value is the area with low density.

[0064] S3: The controller controls each first electric cylinder 9 to synchronously and repeatedly extend and retract, so that the pressure plate 11 pats the slurry surface with the same amplitude to perform grouting action. When the values ​​detected by each pressure sensor 10 are within the set error range, it is considered that the slurry density of each pressure plate 11 area has been uniformly adjusted through the grouting action. Conversely, after a set number of grouting actions, if the pressure value detected in the area corresponding to some pressure plates 11 is still higher than the pressure value detected in the area of ​​other pressure plates, and the higher value is above the set value, then the area with the higher pressure value is recorded as the area with high density and needs to be processed.

[0065] S4: The drive mechanism drives the fixed plate to move forward step by step according to the length data of the pressure plate 11. The density of the slurry is detected at each step, and the area with high density and waiting to be processed is recorded. The position of the area with high density and waiting to be processed is recorded relative to the length direction of the guide rail according to the rotation speed of the servo motor, and the position of each area with high density and waiting to be processed along the width direction between the two guide rails 1 is recorded according to the left and right order of each pressure plate.

[0066] S5: After the device moves to the set position, the controller draws a distribution map of the areas with high density and to be processed according to a preset program, such as... Figure 5 As shown;

[0067] S6: Driven by the drive mechanism, the device moves in the opposite direction. During the movement, the second reduction motor drives the second drum body to rotate, and performs longitudinal stirring on the area with high density and to be treated and its surroundings (i.e., stirring while moving longitudinally). The first reduction motor drives the first drum body to rotate, and performs transverse stirring on the area with high density and to be treated and its surroundings. In this process, the area with high density and to be treated is first stirred longitudinally, and then the area with high density and to be treated after longitudinal stirring is treated by transverse stirring.

[0068] S7: After the device moves to the starting position, repeat steps S1-S5. If there are still areas with high density that need to be processed, continue to complete steps S5 and S6, and then repeat steps S1-S5 again until there are no areas with high density that need to be processed in step S5. Then the device returns to the starting position, and the first stirring rod is disengaged from the slurry surface by the second electric cylinder. The second and third stirring rods are disengaged from the slurry surface by adjustment. Then, the third roller is adjusted to the preset height of the airport runway surface. The third roller is moved by the drive mechanism to perform slurry kneading and rolling operations.

[0069] like Figures 1-6 As shown, in step S7, during the rubbing process, the motor locks the roller body three, preventing it from rotating; during the kneading process, the motor unlocks the roller body three, allowing it to roll naturally as it comes into contact with the surface of the pulp.

[0070] The present invention, through the above-mentioned settings, solves the problem of quality defects in airport pavement panels caused by uneven density on the surface of the slurry, improves the existing slurry kneading technology, and can significantly improve the construction quality of airport pavement.

Claims

1. An airport pavement cement kneading device characterized by: The application relates to a slurry mixing device, which comprises a controller, two parallelly arranged guide rails, a fixed plate arranged above the guide rails, a driving mechanism connecting the fixed plate with the guide rails, a slurry compactness detection mechanism, a slurry surface transverse mixing mechanism, a slurry surface longitudinal mixing mechanism and a kneading mechanism arranged on the fixed plate in sequence along the front-rear direction. The controller is electrically connected with a power supply and is electrically connected with the driving mechanism, the slurry compactness detection mechanism, the slurry surface transverse mixing mechanism, the slurry surface longitudinal mixing mechanism and the kneading mechanism through wires. The guide rails are arranged outside the pavement template, and the upper ends of the guide rails are slidingly connected with sliding plates; the slurry compactness detection mechanism comprises a plurality of first electric cylinders which are arranged in parallel on the front end of the fixed plate along the left-right direction. The slurry surface transverse mixing mechanism comprises a linear driving mechanism and a moving seat, the linear driving mechanism drives the moving seat to move along the left-right direction, and the slurry surface longitudinal mixing mechanism comprises a mixing and stirring cylinder arranged along the left-right direction. The first electric cylinders are arranged along the longitudinal direction, the cylinder barrels of the first electric cylinders penetrate through the fixed plate and are fixedly connected with the fixed plate, and the end portions of the piston rods of the first electric cylinders are connected with pressing plates through pressure sensors. The pressing plates are rectangular plates, the adjacent pressing plates are gap-fitted, the first electric cylinders are electrically connected with the controller through wires, the slurry compactness detection mechanism detects the compactness of the slurry surface under the control of the controller and performs slurry pressing operation on the slurry surface through the pressing plates under the control of the controller. The top end of the moving seat is slidingly connected with the bottom end of the fixed plate, the bottom end of the moving seat is fixedly provided with a second electric cylinder along the longitudinal direction, the fixed end of the second electric cylinder is fixedly connected with the moving seat, the telescopic end is rotatably connected with a stirring roller through a roller support, the stirring roller comprises a roller body one and a plurality of first stirring rods which are uniformly distributed on the surface of the roller body one, and the second electric cylinder is electrically connected with the controller through wires.

2. An airport pavement cement slurry mixing device as claimed in claim 1, characterized in that: The top end of the sliding plate is fixedly connected with the side end of the fixed plate through an L-shaped connecting plate, and the driving mechanism comprises servo motors arranged on the sliding plates on the two sides. The servo motors are fixedly arranged on the upper ends of the sliding plates, the output shafts of the servo motors are rotatably penetrated through the sliding plates and are fixedly connected with driving gears, and a rack structure is embedded on the outer surface of the guide rail along the length direction. The driving gears are meshingly connected with the rack structure, the bottom portions of the sliding plates on the two sides are further rotatably connected with driven gears through longitudinal shafts, the driven gears are meshingly connected with the rack structure, and the two servo motors are electrically connected with the controller through wires and synchronously act under the control of the controller.

3. An airport pavement cement slurry mixing device as defined in claim 1 wherein: The two ends of the roller body one are rotatably connected with the roller supports, one end of the roller support is fixedly provided with a speed reducer one, the output shaft of the speed reducer one is fixedly connected with the center shaft end portion of the roller body one, and the speed reducer one is electrically connected with the controller through wires.

4. An airport pavement cement slurry mixing device as defined in claim 3 wherein: The linear driving mechanism comprises a lead screw rotatably connected between the vertical sections of the two L-shaped connecting plates along the left-right direction, the moving seat is screwed with the lead screw, the outer side end of the vertical section is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with the end portion of the lead screw, and the driving motor is electrically connected with the controller through wires.

5. An airport pavement cement slurry mixing device as defined in claim 4 wherein: The mixing barrel comprises a second barrel body, the outer surface of the second barrel body is uniformly provided with a plurality of second stirring rods, the two ends of the second barrel body are respectively rotationally connected with mounting plates one, the top end of the mounting plate one penetrates through the fixed plate and is fixedly connected with the fixed plate through a limiting nut; The outer surface of the mounting plate one is fixedly provided with a second speed reducer, the output shaft of the second speed reducer is fixedly connected with the roller shaft end of the second barrel body, the second speed reducer is electrically connected with the controller through wires, and the width of the mixing barrel matches the construction width of the airport runway pavement.

6. An airport pavement cement slurry mixing device as defined in claim 5 wherein: The kneading mechanism comprises a kneading roller arranged along the left-right direction, the kneading roller comprises a third barrel body, the two ends of the third barrel body are respectively rotationally connected with mounting plates two, the top end of the mounting plate two is fixedly connected with a wire screw rod two arranged along the longitudinal direction, the two wire screw rods two penetrate through the fixed plate and are fixedly connected with the fixed plate through limiting nuts, the outer surface of the mounting plate two is fixedly provided with a motor, the output shaft of the motor is fixedly connected with the center shaft end of the third barrel body, and the motor is electrically connected with the controller through wires.

7. The use method of the airport runway cement kneading device according to claim 6, comprising the following steps: S1: arranging the device at the construction position of the airport runway, so that the guide rails are located on both sides of the runway template, the fixed plate is opposite to the slurry distribution area of the runway, and the surface of the guide rail is parallel to the top of the preset airport runway; S2: controlling the driving mechanism to move the pressing plate to the starting position of the preliminarily leveled slurry, starting the first electric cylinders, and extending the first electric cylinders by the same set length, recording the data of the pressure sensors installed on the electric cylinders, judging the position with high pressure value as the area with high density, and judging the position with low pressure value as the area with low density; S3: controlling the first electric cylinders to repeatedly extend and contract synchronously, so that the pressing plate beats the slurry surface with the same amplitude to perform the slurry pressing operation, when the values detected by the pressure sensors are within the set error range, it is considered that the slurry density of the area where the pressing plate is located is uniform through the slurry pressing operation, otherwise, after a set number of slurry pressing operations, the pressure value of the area corresponding to the pressing plate is still higher than the pressure detection value of the area corresponding to other pressing plates, and the value is higher than the set value, and the area with high pressure value is recorded as the area with high density and to be processed; S4: driving the fixed plate to move step by step forward according to the length data of the pressing plate, detecting the slurry density every step, and finally recording the area with high density and to be processed; the area with high density and to be processed is recorded according to the position of the area relative to the length direction of the guide rail according to the rotating speed of the servo motor, and the position of the area with high density and to be processed along the width direction between the two guide rails is recorded according to the sequence of the pressing plates in the left-right direction; S5: after the device moves to the set position, the controller draws the distribution map of the area with high density and to be processed according to the preset program. S6: Under the drive of the driving mechanism, the device moves reversely, in the moving process, the second speed reducer drives the second roller body to rotate, longitudinal stirring is carried out on the high density and to-be-processed area and the surrounding area thereof; the first speed reducer drives the first roller body to rotate, transverse stirring is carried out on the high density and to-be-processed area and the surrounding area thereof; in this process, the high density and to-be-processed area is first stirred longitudinally, and then the high density and to-be-processed area stirred longitudinally is processed by transverse stirring; S7: After the device moves to the starting position, steps S1-S5 are repeated, if there is still a high density and to-be-processed area, steps S5 and S6 are continued to be completed, and then steps S1-S5 are repeated, until there is no high density and to-be-processed area in step S5, the device returns to the starting position, the first stirring rod is separated from the surface of the slurry by retracting the first roller body through the second electric cylinder, the second roller body and the second stirring rod are separated from the surface of the slurry by adjusting, then the third roller body is adjusted to the preset height of the airport runway, the third roller body is moved by the driving mechanism to carry out rubbing and kneading operations.

8. A method of using an airport pavement cement slurry mixing device as defined in claim 7, wherein: In step S7, when rubbing, the motor locks the third roller body so that the third roller body does not rotate; when kneading, the motor unlocks the third roller body so that the third roller body naturally rolls with the surface of the slurry.

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