Automatic laying device and method for isolating layer of ballastless track of high-speed railway

Abstract

The invention relates to a ballastless track construction technology, and particularly discloses a high-speed railway ballastless track isolation layer automatic laying device and method.The high-speed railway ballastless track isolation layer automatic laying device comprises a four-wheel walking device, a fixing platform is arranged on the four-wheel walking device, a first fixing frame is arranged on the fixing platform, and geotechnical cloth is arranged on the first fixing frame; two groups of paving mechanisms for paving geotechnical cloth are arranged at one end of the fixed platform, a cleaning mechanism for cleaning impurities is arranged at the other end of the fixed platform, and a dust collection mechanism for cleaning dust is arranged at the middle section of the fixed platform; the two sets of paving mechanisms are located on the two sides of the geotechnical cloth and comprise two sets of movable columns, and the two sets of movable columns clamp the edges of the geotechnical cloth. The technical problem that before geotextile is laid, it needs to be guaranteed that no foreign matter or dust exists on a concrete base, and therefore the laying efficiency of the geotextile is lowered due to the low cleaning efficiency of workers is solved.

Description

Technical Field

[0001] The present invention relates to the construction technology of ballastless tracks, and specifically discloses an automatic laying device and method for the isolation layer of high-speed railway ballastless tracks. Background Art

[0002] With the development of the times, the speed of high-speed trains is getting faster and faster, and the requirements for the stability and smoothness of high-speed railway tracks are also getting higher and higher. However, the traditional ballasted tracks cannot meet these requirements. Therefore, the ballastless track technology has emerged. The ballastless track mainly consists of parts such as track slabs, self-compacting concrete layers, isolation layers, and concrete bases. Among them, the isolation layer is located between the track slab and the concrete base. The isolation layer usually uses geotextiles, which can play the roles of isolation and buffering, prevent the track slab and the base from contacting, thereby reducing vibration and friction, ensuring the smoothness of the track, and at the same time improving the service life of the track. Before laying the isolation layer, it is necessary to ensure that there are no foreign objects such as stones, steel bars, iron filings, and dust on the concrete base. The existing laying of the isolation layer is usually carried out by workers, which has defects such as slow manual laying, too large relaxation degree, and pollution of the geotextile.

[0003] For example, the invention with the patent number CN115432518A discloses a geotextile laying and winding device for the construction of slab ballastless tracks, including a box body. The box body is fixed with a push rod through two first connecting rods. The box body is provided with a first opening, and a box cover is rotatably connected at the first opening. Two first rotating shafts are rotatably connected inside the box body. Both ends of the first rotating shaft extend out of the box body and are respectively fixed with a runner. The box body is connected with a second rotating shaft through a moving component. Two first gears are fixed on one of the first rotating shafts. The second rotating shaft is fixed with two second gears and a winding drum. The two second gears are respectively located at both ends of the winding drum, and the second gear meshes with the first gear. The box body is provided with a second opening. When the existing isolation layer laying device lays the isolation layer, it is necessary to first fix the isolation layer on the concrete base, and then move the laying device. By rotating the winding drum, the geotextile is laid on the concrete base. However, when laying the geotextile, it is still necessary for workers to first clean the surface of the concrete base before laying the geotextile. Therefore, the laying efficiency of the geotextile will decrease due to the low cleaning efficiency of the workers. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an automatic laying device and method for the isolation layer of high-speed railway ballastless tracks, so as to solve the technical problem that before laying the geotextile, it is necessary to ensure that there are no foreign objects and dust on the concrete base, so the laying efficiency of the geotextile will decrease due to the low cleaning efficiency of the workers.

[0005] To achieve the above object, the present invention provides the following technical solution: An automatic laying device for the isolation layer of a ballastless track of high-speed railway, including a four-wheel walking device, on which a fixed platform is arranged, on which a first fixing frame is arranged, and a geotextile is arranged on the first fixing frame; at one end of the fixed platform, two laying mechanisms for laying the geotextile are arranged, and at the other end, a cleaning mechanism for cleaning impurities is arranged, and in the middle section of the fixed platform, a dust suction mechanism for cleaning dust is arranged; the two laying mechanisms are located on both sides of the geotextile, and the laying mechanism includes two movable columns, and the two movable columns clamp the edge of the geotextile. First, through the cleaning mechanism and the dust suction mechanism, the impurities and dust on the concrete base are removed, and then through the cooperation of the laying mechanism and the four-wheel walking device, while the four-wheel moving device is moving, the laying mechanism lays the geotextile on the concrete base, thereby improving the efficiency of laying the geotextile.

[0006] Further, the laying mechanism includes a first spur gear, the four-wheel walking device includes a rotating shaft, the first spur gear is fixedly connected to the rotating shaft, a second spur gear is meshed with the first spur gear, the second spur gear is fixedly connected to a first transmission shaft, a first bevel gear is arranged on the first transmission shaft, a second bevel gear is meshed with the first bevel gear, a second transmission shaft and another second bevel gear are arranged on the second bevel gear, and a third bevel gear is meshed with the other second bevel gear; third transmission shafts are arranged on both of the two movable columns, and a third spur gear and the third bevel gear are fixedly connected to one of the third transmission shafts, a fourth spur gear is fixedly connected to the other third transmission shaft, and the third spur gear is meshed with the fourth spur gear; a support frame and a support seat are arranged on the fixed platform, and the second transmission shaft and the two third transmission shafts are rotatably connected to the support frame, and the two ends of the first transmission shaft are respectively rotatably connected to the support frame and the support seat. The laying mechanism is connected to the four-wheel walking device, and the laying speed of the laying mechanism is equal to the walking speed of the four-wheel walking device, ensuring that the laying mechanism can always send out the appropriate geotextile to lay the concrete base, thereby improving the efficiency of laying the geotextile.

[0007] Further, a separation component for moving the second spur gear is arranged on the fixed platform; the separation component includes a hydraulic cylinder, the fixed end of the hydraulic cylinder is fixedly connected to the fixed platform, a first connecting frame is arranged on the telescopic end of the hydraulic cylinder, and two U-shaped blocks are arranged on the first connecting frame, and the two U-shaped blocks are respectively slidably clamped on both sides of the second spur gear. The separation component is used to control whether the laying mechanism is connected to the four-wheel walking device, and can control whether the geotextile is sent out through the laying mechanism according to the actual situation.

[0008] Further, the cleaning mechanism includes a vertical moving device, which includes a movable platform. A second connecting frame is fixedly connected to the movable platform, and a driving component and two sets of sweeping components are fixedly connected to the second connecting frame. The sweeping components are used to clean the impurities on the concrete base, and the driving component is used to drive the sweeping components. The cleaning mechanism can adjust its height to ensure that it can adapt to different working environments, improve adaptability, and at the same time can quickly remove the impurities on the concrete base, improving the efficiency of laying the geotextile.

[0009] Further, each sweeping component includes a connecting column fixedly connected to the second connecting frame. Two sets of first fixing frames are arranged up and down on the connecting column. Three rotatable fourth transmission shafts are arranged on the first fixing frame. Transmission wheels are fixedly connected to the three fourth transmission shafts. A conveyor belt is arranged on the three transmission wheels. The conveyor belt is triangular, and several sets of fixing blocks are arranged on the conveyor belt. The sweeping component can sweep the impurities on the concrete base, perform preliminary cleaning on the concrete base, and at the same time can prevent the impurities from being sucked into the dust suction mechanism, resulting in damage to the dust suction mechanism.

[0010] Further, the driving component includes a fixing plate fixedly connected to the second connecting frame. A second fixing frame is arranged on the fixed platform, and the fixing plate is slidably clamped on the second fixing frame. A driving motor is arranged on the fixing plate. The output shaft of the driving motor is connected to one of the fourth transmission shafts. A fifth straight gear is arranged on the fourth transmission shaft, and a fifth straight gear is also arranged on the fourth transmission shaft corresponding to the other set of sweeping components. The two fifth straight gears are meshed. The driving component is used to drive the cleaning mechanism so that the cleaning mechanism can comprehensively clean the concrete base.

[0011] Further, the dust suction mechanism includes a dust suction device, which includes a suction port. Two sets of threaded columns are arranged on the suction port. The threaded columns are inserted through the fixed platform, and movable sleeves are sleeved on the threaded columns. The dust suction mechanism sucks the dust on the concrete base to make the surface of the concrete base meet the requirements for laying the geotextile, eliminating the need for workers to clean, and improving the efficiency of laying the geotextile.

[0012] Further, a baffle is arranged on the first fixing frame. The baffle is used to prevent the impurities from splashing during cleaning, causing harm to people or equipment.

[0013] A method for using an automatic laying device for the isolation layer of a high-speed railway ballastless track includes the following steps S1: First, move the ballastless track isolation layer automatic laying device to the designated position. Then, install the geotextile on the first fixing frame, and then tow one end of the geotextile so that both sides of the geotextile are clamped between two groups of movable columns. S2: Then start the vertical moving device. The vertical moving device drives the second connecting frame to descend. The second connecting frame drives the connecting column and the fixing plate to descend. The connecting column drives two groups of first fixing frames to descend. The two groups of first fixing frames drive three groups of driving wheels and the conveyor belt to descend until one side of the conveyor belt contacts the concrete base. At the same time, the fixing plate drives the driving motor and the fourth transmission shaft connected thereto to descend. S3: Rotate the movable sleeve. The movable sleeve moves on the threaded rod. The threaded rod descends on the fixed platform, driving the air suction port to descend until the air suction port descends to a suitable position. S4: Start the dust suction device. The dust suction device sucks the dust at the air suction port into the dust suction device. Start the driving motor. The output shaft of the driving motor drives the fourth transmission shaft to rotate through the coupling. The fourth transmission shaft drives the fifth spur gear and the driving wheel to rotate. The driving wheel cooperates with the other two groups of driving wheels to drive the conveyor belt to rotate. Through the meshing of two groups of fifth spur gears, the other conveyor belt also rotates to clean the impurities on the concrete base.

[0014] S5: Start the four-wheel walking device. The first spur gear is driven to rotate through the rotating shaft. The first spur gear drives the second spur gear to rotate. The second spur gear drives the first bevel gear to rotate. The first bevel gear drives two groups of second bevel gears to rotate. One of the second bevel gears drives the third bevel gear and the third spur gear to rotate. The third spur gear drives the fourth spur gear. The third spur gear and the fourth spur gear respectively drive two groups of movable columns to rotate in opposite directions, pulling the geotextile out of the first fixing frame and laying the geotextile on the concrete base.

[0015] It can quickly clean the concrete base and lay the geotextile, and can effectively avoid the situation of the geotextile being contaminated. The feeding speed of the geotextile is proportional to the moving speed of the four-wheel walking device, ensuring that the slack of the geotextile can be kept appropriate during laying, and at the same time ensuring a high efficiency in laying the geotextile.

[0016] The working principle and beneficial effects of this solution are as follows: During use, first move the ballastless track isolation layer automatic laying device to the designated position through the four-wheel walking device. At the same time, ensure that the cleaning mechanism is at the front end and the paving mechanism is at the rear end. Then install the geotextile. Then start the dust suction mechanism and the cleaning mechanism first to clean the concrete base to ensure that the concrete base meets the requirements for paving the geotextile. Then start the four-wheel walking device, and the four-wheel walking device drives the paving mechanism to operate. The paving mechanism paves the geotextile on the concrete base. The speed at which the paving mechanism delivers the geotextile is proportional to the moving speed of the four-wheel walking device, which can ensure that no matter what the moving speed of the four-wheel walking device is, the paving mechanism can deliver the appropriate geotextile and can quickly lay the geotextile on the concrete base, improving the paving efficiency of the geotextile.

[0017] When the paving mechanism does not need to operate, start the hydraulic cylinder. The telescopic end of the hydraulic cylinder drives the first connecting frame to contract. The first connecting frame drives the second straight gear to move through two groups of U-shaped blocks. The second straight gear drives the first transmission shaft and the first bevel gear to move, so that the second straight gear and the first bevel gear are separated from the first straight gear and the second bevel gear respectively. At this time, the paving mechanism is separated from the four-wheel walking device; when the paving mechanism needs to operate, first ensure that the four-wheel walking device remains stationary, and then start the hydraulic rod. The second straight gear, the first transmission shaft and the first bevel gear are moved to the initial position through the hydraulic rod. At this time, the second straight gear and the first bevel gear are engaged with the first straight gear and the second bevel gear respectively. It is possible to control whether the paving mechanism is connected to the four-wheel walking device through the separation component. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the embodiment; Figure 2 It is an exploded view of the embodiment; Figure 3 It is Figure 2 an enlarged schematic view of area A in Figure 4 It is Figure 2 an enlarged schematic view of area B in Figure 5 It is a side view of the embodiment; Figure 6 It is a structural view of the cleaning mechanism in the embodiment; Figure 7 It is a top view of the cleaning mechanism in the embodiment; Figure 8 It is a schematic structural diagram of the vertical moving device in the embodiment.

[0019] The marks in the drawings are as follows: fixed platform 1, four-wheel walking device 2; The first spur gear 301, the second spur gear 302, the first transmission shaft 303, the first bevel gear 304, the second bevel gear 305, the second transmission shaft 306, the third bevel gear 307, the third spur gear 308, the fourth spur gear 309, the movable column 310, the third transmission shaft 311, the support frame 312, the support seat 313, the hydraulic cylinder 314, the first connecting frame 315, the U-shaped block 316; The first fixing frame 401, the geotextile 402, the second fixing frame 403; The dust suction device 501, the suction port 502, the threaded column 503, the movable sleeve 504; The vertical moving device 601, the movable platform 602, the second connecting frame 603, the fixing block 604, the connecting column 605, the first fixing frame 606, the fourth transmission shaft 607, the transmission wheel 608, the conveyor belt 609, the fixing block 610, the fixing plate 611, the second fixing frame 612, the driving motor 613, the baffle 614, the fifth spur gear 615. Specific implementation manners

[0020] The following is a further detailed description through specific implementation manners: Embodiment

[0021] As Figures 1 to 7 shown, an automatic laying device for the isolation layer of a high-speed railway ballastless track is disclosed, which includes a four-wheel traveling device 2. A fixed platform 1 is fixedly connected to the four-wheel traveling device 2. A first fixing frame 401 is arranged on the fixed platform 1. The geotextile 402 is packaged in rolls and the geotextile 402 is sleeved on the first fixing frame 401. A second fixing frame 403 is fixedly connected to the fixed platform 1. The geotextile 402 is placed on the second fixing frame 403. Two paving mechanisms for paving the geotextile 402 are arranged at one end of the fixed platform 1. The two paving mechanisms are respectively located on both sides of the geotextile 402. The second fixing frame 403 is located between the first fixing frame 401 and the paving mechanism.

[0022] The paving mechanism includes two groups of movable columns 310. The two groups of movable columns 310 clamp the geotextile 402. A third transmission shaft 311 is fixedly connected to each of the two groups of movable columns 310. A third spur gear 308 and a fourth spur gear 309 are respectively fixedly connected to the two third transmission shafts 311. The third spur gear 308 and the fourth spur gear 309 are meshed with each other. A third bevel gear 307 is fixedly connected to one of the third transmission shafts 311. A second bevel gear 305 is meshed with the third bevel gear 307. The second bevel gear 305 is fixedly connected to one end of a second transmission shaft 306. Another second bevel gear 305 is fixedly connected to the other end of the second transmission shaft 306. A first bevel gear 304 is meshed with the other second bevel gear 305. The first bevel gear 304, the third bevel gear 307 and the two second bevel gears 305 are all located in the same horizontal plane. The first bevel gear 304 is fixedly connected to a first transmission shaft 303. A second spur gear 302 is fixedly connected to the first transmission shaft 303. A first spur gear 301 is meshed with the second spur gear 302. The four-wheel traveling device 2 includes a rotating shaft. The first spur gear 301 is fixedly connected to the rotating shaft. A support frame 312 and a support seat 313 are fixedly connected to the fixed platform 1. The second transmission shaft 306 and the third transmission shaft 311 are both rotatably connected to the support frame 312. One end of the first transmission shaft 303 is rotatably connected to the support frame 312, and the other end is rotatably connected to the support seat 313. The first transmission shaft 303 is slidably connected to the support frame 312 and the support seat 313, as Figures 2 to 4 shown.

[0023] A separating component for moving the second spur gear 302 is arranged on the fixed platform 1. The separating component includes a hydraulic cylinder 314. The fixed end of the hydraulic cylinder 314 is fixedly connected to the fixed platform 1. A first connecting frame 315 is fixedly connected to the telescopic end of the hydraulic cylinder 314. Two U-shaped blocks 316 are arranged on the first connecting frame 315. The two U-shaped blocks 316 are respectively slidably clamped on both sides of the second spur gear 302. The U-shaped blocks 316 do not affect the normal operation of the second spur gear 302, as Figure 2 shown.

[0024] On the other end of the fixed platform 1, there is a cleaning mechanism for cleaning foreign objects. The cleaning mechanism includes a vertical moving device 601. The vertical moving device 601 includes a movable platform 602. A fixed block 604 is fixedly connected to the movable platform 602. A second connecting frame 603 is connected to the fixed block 604. Two sets of sweeping components and a driving component are arranged on the second connecting frame 603. The driving component is located between the two sets of sweeping components. The two sets of sweeping components are respectively located on both sides of the concrete base. The two sets of sweeping components cooperate to sweep the foreign objects on the concrete base. The sweeping component includes a connecting column 605. The connecting column 605 is fixedly connected to the second connecting frame 603. Two sets of first fixing frames 401 are fixedly connected to the connecting column 605. The two sets of first fixing frames 401 are distributed up and down. Three sets of fourth transmission shafts 607 are arranged on the two sets of first fixing frames 401. The fourth transmission shafts 607 are rotatably connected to the two sets of first fixing frames 401. Transmission wheels 608 are arranged on the three sets of fourth transmission shafts 607. The three transmission wheels 608 are distributed in a triangle. A conveyor belt 609 is connected to the three transmission wheels 608. A number of fixed blocks 604 are arranged on the conveyor belt. The conveyor belt and the fixed blocks 604 are both made of rubber. A stop block is arranged on the first fixing frame 401 to prevent foreign objects from splashing, such as Figure 6 and Figure 7 shown.

[0025] The driving component includes a fixing plate 611. A second fixing frame 403 is arranged on the fixed platform 1. The fixing plate 611 is slidably clamped in the second fixing frame 403. The fixing plate 611 is fixedly connected to the second connecting frame 603. A driving motor 613 is fixedly connected to the fixing plate 611 by bolts. A motor box is arranged on the fixing plate 611. The driving motor 613 is located in the motor box. The output shaft of the driving motor 613 is connected to one of the fourth transmission shafts 607 through a coupling. Fifth straight gears 615 are arranged on two adjacent fourth transmission shafts 607 of the two sets of sweeping components. The two fifth straight gears 615 are meshed. The length of the fourth transmission shaft 607 connected with the fifth straight gear 615 is longer than that of the other fourth transmission shafts 607, such as Figure 2 、 Figure 5 and Figure 6 shown.

[0026] A dust suction mechanism for collecting dust is arranged on the fixed platform 1. The dust suction mechanism is located between the cleaning mechanism and the paving mechanism. The dust suction mechanism includes a dust suction device 501. The dust suction device 501 is fixedly connected to the fixed platform 1. The dust suction device 501 includes an air suction port 502. The air suction port 502 is located below the fixed platform 1. Threaded rods are fixedly connected to both sides of the air suction port 502. The threaded rods are inserted through the fixed platform 1. A movable sleeve 504 is sleeved on the threaded rods. The movable sleeve 504 is located above the fixed platform 1 and is in contact with the fixed platform 1, such as Figure 5 shown.

[0027] The four-wheel traveling device 2 is used to move the fixed platform 1. The dust suction device 501 is used to suck the dust on the concrete base. The vertical moving device 601 is used to drive the fixed block 604 to move up and down. The four-wheel traveling device 2, the dust suction device 501, and the vertical moving device 601 are all common technical means for those skilled in the art, and their structures, connection methods, and usage methods are all well-known to those skilled in the art.

[0028] A method for using an automatic laying device for the isolation layer of a high-speed railway ballastless track includes the following steps. S1: First, move the automatic laying device for the isolation layer of the ballastless track to the designated position through the four-wheel traveling device 2 and then stop. The cleaning mechanism is located at the front end, and the paving mechanism is located at the rear end. Then, install the geotextile 402 on the first fixing frame 401, pull one end of the geotextile 402 to the second fixing frame 403, and then clamp it between two groups of movable columns 310. At this time, the geotextile 402 does not contact the concrete base.

[0029] S2: Then start the vertical moving device 601. The vertical moving device 601 controls the movable platform 602 to descend. The movable platform 602 drives the fixed block 604 and the second connecting frame 603 to descend. The second connecting frame 603 drives the sweeping assembly and the driving assembly to descend until one side of the conveyor belt contacts the concrete base. Rotate the movable sleeve 504. The movable sleeve 504 rises on the threaded rod. The suction port 502, due to its own gravity, always keeps the movable sleeve 504 in contact with the fixed platform 1, thereby controlling the distance between the suction port 502 and the concrete base.

[0030] S3: Start the dust suction device 501 and the driving motor 613. The dust suction device 501 sucks the dust at the suction port 502 into the dust suction device 501. The output shaft of the driving motor 613 drives one group of the fourth transmission shafts 607 to rotate through a coupling. The fourth transmission shaft 607 drives the fifth spur gear 615 and the transmission wheel 608 to rotate. The fifth spur gear 615 drives another group of fifth spur gears 615 to rotate. The other group of fifth spur gears 615 drives the corresponding fourth transmission shafts 607 and transmission wheels 608 to rotate. The two transmission wheels 608 drive the two conveyor belts 609 to rotate respectively. The two conveyor belts 609 drive several groups of fixed blocks 604 to move, clean the impurities on the concrete base through the fixed blocks 604, and at the same time drive the remaining transmission wheels 608 and fourth transmission shafts 607 to rotate.

[0031] S4: Start the four-wheel walking device 2. When the four-wheel walking device 2 moves, its rotating shaft drives the first spur gear 301 to rotate. The first spur gear 301 drives the second spur gear 302 to rotate. The second spur gear 302 drives the first transmission shaft 303 and the first bevel gear 304 to rotate. The first transmission shaft 303 rotates between the support frame 312 and the support seat 313. The first bevel gear 304 drives two groups of second bevel gears 305 and the second transmission shaft 306 to rotate. The second transmission shaft 306 rotates on the second transmission shaft 306 and rotates on the support frame 312. One of the second bevel gears 305 drives the third bevel gear 307, one of the third transmission shafts 311 and the third spur gear 308 to rotate. The third spur gear 308 drives the fourth spur gear and one of the movable columns 310 to rotate. The fourth spur gear 309 drives the other third transmission shaft 311 and the other movable column 310 to rotate. The two movable columns 310 rotate in opposite directions, driving one end of the geotextile 402 to move, causing the geotextile 402 to rotate around the first fixing frame 401 and laying the concrete base.

[0032] When it is necessary to only move the ballastless track isolation layer automatic laying device and it is not necessary to lay the geotextile 402, start the hydraulic cylinder 314 to make the hydraulic rod contract. The telescopic end of the hydraulic cylinder 314 drives the first connecting frame 315 to move. The first connecting frame 315 drives two groups of U-shaped blocks 316 to move. When the two groups of U-shaped blocks 316 move, they drive the second spur gear 302 to move. The second spur gear 302 drives the first transmission shaft 303 and the first bevel gear 304 to move. The first transmission shaft 303 slides on the support frame 312 and the support seat 313, separating the second spur gear 302 from the first spur gear 301 and the first bevel gear 304 from the second bevel gear 305, and the paving mechanism stops running. When it is necessary for the paving mechanism to run, it is necessary to ensure that the four-wheel walking device 2 remains stationary, and then start the hydraulic rod to make the telescopic end of the hydraulic rod extend. The telescopic end drives the first connecting frame 315 and two groups of U-shaped blocks 316 to move. The two groups of U-shaped blocks 316 drive the second spur gear 302 to move. The second spur gear 302 drives the first transmission shaft 303 and the first bevel gear 304 to move until the second spur gear 302 moves to mesh with the first spur gear 301, and at the same time the first bevel gear 304 meshes with the second bevel gear 305. The paving mechanism moves with the operation of the four-wheel walking device 2 and can automatically lay the geotextile 402 according to the speed of the four-wheel walking device 2, thereby improving the efficiency of laying the geotextile 402.

[0033] When the vertical moving device 601 drives the second connecting frame 603 to lower the sweeping assembly and the driving assembly, the second connecting frame 603 drives the fixing plate 611 to descend. The fixing plate 611 descends on the second fixing frame 403. The fixing plate 611 drives the driving motor 613 and one set of the fourth transmission shafts 607 to descend. At the same time, the second fixing frame 403 drives the connecting column 605 to descend, and the connecting column 605 drives two sets of the first fixing frames 401 to descend. The first fixing frames 401 drive three sets of the fourth transmission shafts 607, three sets of transmission wheels 608 and the conveyor belt 609 to descend. Since both the fixing plate 611 and the connecting column 605 are driven by the second connecting frame 603 to descend, the driving motor 613 and the fourth transmission shafts 607 have the same descending speed, and the driving assembly is always connected to the sweeping assembly. By adjusting the height of the sweeping assembly through the vertical moving device 601, the sweeping assembly can adapt to different construction sites, thereby improving the adaptability of the ballastless track isolation layer automatic laying device.

[0034] Taking the center of the concrete base as the boundary, two sets of sweeping assemblies respectively clean both sides of the concrete base. The conveyor belts 609 of the two sets of sweeping assemblies rotate in opposite directions, and can respectively sweep the foreign matters on the left and right sides of the concrete base to both sides. The shape of the cleaning mechanism is as Figure 7 shown. The two sets of sweeping assemblies are in contact with each other at the center, which can ensure that the impurities at the junction can also be cleaned. The impurities on the concrete base are removed by the sweeping assemblies, and the dust is cleaned in cooperation with the dust suction mechanism. While laying the geotextile 402, the concrete base is automatically cleaned, thereby improving the efficiency of laying the geotextile 402.

[0035] The above are only the embodiments of the present invention, and the specific structures and characteristics and other common knowledge well known in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the present invention.

Claims

1. An automatic laying device for the isolation layer of a ballastless track on high-speed railways, characterized in that: It includes a four-wheel walking device, on which a fixed platform is provided. On the fixed platform, a first fixing frame is provided, and a geotextile is provided on the first fixing frame. At one end of the fixed platform, two paving mechanisms for paving the geotextile are provided, and at the other end, a cleaning mechanism for cleaning impurities is provided. In the middle section of the fixed platform, a dust suction mechanism for cleaning dust is provided. The two paving mechanisms are located on both sides of the geotextile. The paving mechanism includes two movable columns, and the two movable columns clamp the edge of the geotextile.

2. The automatic laying device for the isolation layer of the ballastless track of high-speed railway according to claim 1, wherein: The paving mechanism includes a first spur gear. The four-wheel walking device includes a rotating shaft. The first spur gear is fixedly connected to the rotating shaft. A second spur gear is meshed with the first spur gear. The second spur gear is fixedly connected to a first transmission shaft. A first bevel gear is provided on the first transmission shaft. A second bevel gear is meshed with the first bevel gear. A second transmission shaft and another set of second bevel gears are provided on the second bevel gear. Another set of second bevel gears is meshed with a third bevel gear. Third transmission shafts are provided on both of the two movable columns. A third spur gear and the third bevel gear are fixedly connected to one of the third transmission shafts, and a fourth spur gear is fixedly connected to the other third transmission shaft. The third spur gear is meshed with the fourth spur gear. A support frame and a support seat are provided on the fixed platform. The second transmission shaft and the two third transmission shafts are rotatably connected to the support frame, and both ends of the first transmission shaft are rotatably connected to the support frame and the support seat respectively.

3. The automatic laying device for the isolation layer of the ballastless track of high-speed railway according to claim 2, wherein: A separating component for moving the second spur gear is provided on the fixed platform. The separating component includes a hydraulic cylinder. The fixed end of the hydraulic cylinder is fixedly connected to the fixed platform. A first connecting frame is provided on the telescopic end of the hydraulic cylinder. Two U-shaped blocks are provided on the first connecting frame, and the two U-shaped blocks are respectively slidably clamped on both sides of the second spur gear.

4. An automated laying device for the isolation layer of a ballastless track on high-speed railways according to claim 3, characterized in that: The cleaning mechanism includes a vertical moving device. The vertical moving device includes a movable platform. A second connecting frame is fixedly connected to the movable platform. A driving component and two cleaning components are fixedly connected to the second connecting frame. The cleaning component is used for cleaning impurities on the concrete base, and the driving component is used for driving the cleaning component.

5. An automatic laying device for the isolation layer of a ballastless track on high-speed railways according to claim 4, characterized in that: The cleaning component includes a connecting column. The connecting column is fixedly connected to the second connecting frame. Two first fixing frames are provided on the connecting column and are distributed up and down. Three rotatable fourth transmission shafts are provided on the first fixing frame. Transmission wheels are fixedly connected to all three fourth transmission shafts. A conveyor belt is provided on the three transmission wheels. The conveyor belt is triangular, and a number of fixing blocks are provided on the conveyor belt.

6. The automatic laying device for the isolation layer of the ballastless track of high-speed railway according to claim 5, characterized in that: The driving component includes a fixing plate. The fixing plate is fixedly connected to the second connecting frame. A second fixing frame is provided on the fixed platform. The fixing plate is slidably clamped on the second fixing frame. A driving motor is arranged on the fixed plate. The output shaft of the driving motor is connected to one group of the fourth transmission shafts. A fifth spur gear is arranged on the fourth transmission shaft. A fifth spur gear is also arranged on the fourth transmission shaft corresponding to the other group of sweeping assemblies. The two groups of fifth spur gears are meshed with each other.

7. An automatic laying device for the isolation layer of a ballastless track on high-speed railways according to claim 6, characterized in that: The dust suction mechanism includes a dust suction device. The dust suction device includes a suction port. Two groups of threaded columns are arranged on the suction port. The threaded columns are inserted through the fixed platform, and movable sleeves are sleeved on the threaded columns.

8. An automatic laying device for the isolation layer of a ballastless track on high-speed railways according to claim 7, characterized in that: A baffle is arranged on the first fixing frame.

9. Method for using an automatic laying device for the isolation layer of a ballastless track on high-speed railways, characterized in that, It includes the following steps: S1: First, move the ballastless track isolation layer automatic laying device to the designated position. Then, install the geotextile on the first fixing frame. Then, pull one end of the geotextile so that both sides of the geotextile are clamped between the two groups of movable columns. S2: Then, start the vertical moving device. The vertical moving device drives the second connecting frame to descend. The second connecting frame drives the connecting column and the fixed plate to descend. The connecting column drives the two groups of first fixing frames to descend. The two groups of first fixing frames drive the three groups of transmission wheels and the conveyor belt to descend until one side of the conveyor belt contacts the concrete base. At the same time, the fixed plate drives the driving motor and the fourth transmission shaft connected thereto to descend. S3: Rotate the movable sleeve. The movable sleeve moves on the threaded rod. The threaded rod descends on the fixed platform, driving the air inlet to descend until the air inlet descends to the designated position. S4: Start the dust suction device. The dust suction device sucks the dust at the air inlet into the dust suction device. Start the driving motor. The output shaft of the driving motor drives the fourth transmission shaft to rotate through a coupling. The fourth transmission shaft drives the fifth spur gear and the transmission wheel to rotate. The transmission wheel cooperates with the other two groups of transmission wheels to drive the conveyor belt to rotate. Through the meshing of the two groups of fifth spur gears, the other conveyor belt also rotates to clean the impurities on the concrete base. S5: Start the four-wheel traveling device. The first spur gear is driven to rotate through the rotating shaft. The first spur gear drives the second spur gear to rotate. The second spur gear drives the first bevel gear to rotate. The first bevel gear drives the two groups of second bevel gears to rotate. One group of second bevel gears drives the third bevel gear and the third spur gear to rotate. The third spur gear drives the fourth spur gear. The third spur gear and the fourth spur gear respectively drive the two groups of movable columns to rotate in opposite directions, pulling the geotextile out of the first fixing frame and laying the geotextile on the concrete base.

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