Film covering equipment and film covering method for pavement construction

Abstract

The invention relates to film covering equipment for pavement construction and a film covering method. The film covering equipment for pavement construction comprises a mounting frame, the mounting frame can be movably mounted on the bracket; the two film clamping assemblies are arranged on the support in the front-back direction in a spaced mode, the mounting frame can move between the two film clamping assemblies in a reciprocating mode, and in the process, one film clamping assembly clamps the extending end of a film; and the cutting assembly is used for transversely cutting off the film extending out of the film laminating roller. The film covering equipment for pavement construction is high in automation degree, few in procedures needing manual participation and high in film covering efficiency.

Description

Technical Field

[0001] This invention relates to machinery and auxiliary tools for the construction or paving of roads, stadiums or similar works, and specifically to a mulching equipment and method for road construction. Background Technology

[0002] Currently, most road construction uses materials such as asphalt concrete or polyurethane concrete. Although these materials have high strength, they still pose a risk of cracking due to factors such as temperature changes and base shrinkage. Therefore, it is necessary to lay a film (such as fiberglass cloth) on the concrete surface to increase the material strength and prevent road surface cracks. Currently, manual laying or installing a simple device at the front of the tractor to pull the fiberglass cloth roll back and forth is commonly used to lay the fiberglass cloth.

[0003] For example, the Chinese utility model patent disclosed in patent application number CN201920111580.X (publication number CN209537998U) entitled "A Film Laying Device for Highway Engineering" includes a horizontal plate, a first support frame, a film-laying roller, a second support frame, a traveling roller, a mounting frame, and a pressure roller. The mounting frame includes a fixed seat, a lead screw, and a telescopic mechanism. The telescopic mechanism includes a support rod, a threaded hole, and an outer sleeve. A through hole is also provided on the horizontal plate. Two horizontally arranged grooves are symmetrically opened on the two inner walls of the through hole along the length of the horizontal plate. A slider is provided in the groove. A tension roller is rotatably installed between the two sliders. A tension spring is also provided in the groove. The tension spring is located between the slider and the side wall of the groove facing the film-laying roller.

[0004] In use, the film wound from the laminating roller is guided under the horizontal plate through the tension roller in the through hole, and then passes around the lower end of the pressure roller to achieve the laying operation when the horizontal plate moves. The tension roller can always ensure that the film wound from the laminating roller is straight and will not have wrinkles, thus ensuring laying efficiency.

[0005] After the membrane wraps around the lower end of the pressure roller, one end (the protruding end of the membrane) must be fixed relative to the road surface so that the membrane can be laid on the road surface when the highway engineering membrane laying device moves. However, this patent does not have a structure to fix one end of the membrane, which requires manual fixing of one end of the membrane, which is inconvenient. In addition, the highway engineering membrane laying device needs to be moved in the opposite direction to lay another section of the road surface after the membrane laying is completed, which requires manual cutting of the membrane, which is also inconvenient.

[0006] In summary, the membrane laying device for highway engineering in this patent requires a lot of manual intervention in the process, and its automation level is not high enough and its efficiency is low. Summary of the Invention

[0007] The first technical problem to be solved by the present invention is to provide a film covering equipment for road construction with high film laying efficiency, in view of the current state of the prior art.

[0008] The second technical problem to be solved by the present invention is to provide a film covering method for the above-mentioned film covering equipment for road construction, in view of the current status of the prior art.

[0009] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a film covering device for road construction, comprising... The mounting frame has a film-coating roller extending in the left-right direction, which can rotate about its axis and is used to wind the film to be laid on the road surface. The mounting frame can move in the front-back direction under the action of a first drive mechanism. Its characteristic is that it also includes A bracket on which a mounting frame can be movably mounted, the bracket being movable relative to the road surface; The film clamping assembly has two parts, which are spaced apart on the support in the front-to-back direction. Each film clamping assembly includes a rotating rod, a drive structure connected to the rotating rod, a first clamp, and a second drive mechanism connected to the first clamp. The rotating rod extends in the left-to-right direction and is mounted on the support. The rotating rod can rotate around its axis under the action of the drive structure. The first clamp is mounted on the rotating rod. Under the action of the second drive mechanism, the first clamp can clamp or release the protruding end of the film on the film coating roller. The mounting bracket can reciprocate between two membrane clamping assemblies, and during this process, one of the membrane clamping assemblies clamps the protruding end of the membrane; The cutting assembly includes a blade that can move back and forth with the mounting frame and a fifth drive mechanism connected to the blade. The blade is located below the coating roller and can reciprocate in the left-right direction under the action of the fifth drive mechanism to cut the film extending from the coating roller laterally.

[0010] To facilitate pulling the extended end of the film to the film clamping assembly and clamping it with the first clamp, the road construction film covering equipment also includes a clamping assembly. The clamping assembly includes a moving plate, a third drive mechanism, a second clamp, and a fourth drive mechanism. The moving plate is connected to the mounting frame and moves up and down relative to the mounting frame under the action of the third drive mechanism. The second clamp is mounted on the moving plate and the two are fixed relative to each other in the vertical direction. The second clamp can clamp or release the extended end of the film on the film covering roller under the action of the fourth drive mechanism. When the mounting frame is close to one of the film clamping assemblies, the second clamp clamps the extended end of the film and pulls it down to the first clamp. After the first clamp clamps the extended end of the film, the second clamp releases the film and returns to its original position between the film covering roller and the first clamp. The movable plate can move upward to the protruding end of the membrane. After the second clamp clamps the protruding end of the membrane, the movable plate moves downward until the protruding end of the membrane is located at the first clamp, so that the first clamp can clamp the protruding end of the membrane. This eliminates the need for the user to manually pull the protruding end of the membrane to the first clamp every time, resulting in a high degree of automation and improved ease of use.

[0011] Preferably, the movable plate has two pieces spaced apart from each other on the left and right, and the second clamp includes two clamping plates arranged sequentially in the front-back direction. Each clamping plate extends in the left-right direction and is mounted on the movable plate on the corresponding side at both ends. There is a gap between the two clamping plates to clamp the protruding end of the membrane. At least one clamping plate can move toward or away from the other clamping plate under the action of the fourth driving mechanism to clamp or release the protruding end of the membrane.

[0012] In order to ensure good cooperation between the clamping assembly and the film clamping assembly to clamp the film, the first clamp has multiple clamps and is spaced apart on the rotating rod in the left-right direction. Each first clamp includes two clamping pieces that can move closer or further apart from each other under the action of the second driving mechanism. The two clamping pieces can clamp a local area of ​​the protruding end of the film.

[0013] Each clamping plate has multiple grooves spaced apart on its bottom edge, with the grooves on the two clamping plates corresponding one-to-one, and each of the first clamps can be positioned at a corresponding groove. The grooves facilitate the contact of the first clamp with the membrane for clamping.

[0014] The cutting assembly can have various structural forms. To facilitate the movement of the blade relative to the mounting frame in the left-right direction, the cutting assembly also includes a mounting strip, a slider, and a blade holder. The mounting strip extends in the left-right direction and is fixedly connected to the mounting frame. A guide rail extending along its length is fixedly provided on the mounting strip. The slider slides against the guide rail and is fixedly connected to the blade holder. The blade is mounted on the blade holder, which is connected to a fifth drive mechanism. The second drive mechanism drives the blade holder to move in the left-right direction, and the blade moves accordingly to cut the film. The cooperation between the slider and the guide rail guides the movement of the blade holder.

[0015] In order to ensure that the film adheres to the adhesive on the road surface, the film coating equipment for road construction also includes a pressure roller installed on the mounting frame. The pressure roller can move up and down relative to the mounting frame under the action of the seventh drive mechanism. When the extended end of the film on the film coating roller is clamped by the first clamp, the pressure roller can press against the upper surface of the film.

[0016] The first drive mechanism can have various structural forms, such as an electric actuator. Alternatively, the first drive mechanism may include a first drive member fixedly mounted on a mounting bracket, a first gear connected to the first drive member, and a rack meshing with the first gear. The rack extends in the front-rear direction and is fixed relative to the bracket. When the first drive member operates, it drives the first gear to rotate. Because the first gear meshes with the rack, and the rack is fixed, the first gear will drive the mounting bracket to move along the extension direction of the rack.

[0017] To ensure smooth movement of the mounting bracket, the support is provided with a slide rail extending in the front-to-back direction, and the rack is provided on the side wall of the slide rail. The mounting bracket is provided with a first pin extending in the left-to-right direction, and a first roller that can rotate around its axis is sleeved on the first pin. The first roller can slide along the top wall of the slide rail. The design of the first roller reduces the friction between the mounting bracket and the support, resulting in low resistance to movement of the mounting bracket.

[0018] To prevent the first roller from shifting relative to the slide rail in the vertical or lateral direction, thus affecting the movement of the mounting frame, the mounting frame is provided with a first anti-deviation component that positions the first roller relative to the slide rail in the vertical direction, and / or, the mounting frame is provided with a second anti-deviation component that positions the first roller relative to the slide rail in the lateral direction.

[0019] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a film-coating method for the above-mentioned film-coating equipment for road construction, characterized in that the two film-clamping components are respectively referred to as the first film-clamping component and the second film-clamping component, and the film-coating method includes the following steps:

[0020] (1) Manually pull the extended end of the film on the film coating roller to the second clamp of the clamping assembly. The second clamp clamps the extended end of the film under the action of the fourth drive mechanism. The bracket is fixed and the first drive mechanism drives the mounting bracket to move to the position adjacent to the first film clamping assembly.

[0021] (2) The third drive mechanism drives the moving plate to move downward, so that the second clamp pulls the extended end of the film down to the first clamp of the first clamping assembly. After the first clamp clamps the extended end of the film, the second clamp releases the film under the action of the fourth drive mechanism. Then the moving plate resets upward under the action of the third drive mechanism. The rotating rod rotates to the position where the first clamp attaches the film to the road surface under the action of the drive structure.

[0022] (3) The mounting frame moves toward the second film clamping assembly under the action of the first drive mechanism. After the mounting frame moves to the second film clamping assembly, it stops. The second clamp clamps the film under the action of the fourth drive mechanism. Then the cutting assembly cuts the film stretched under the clamping assembly laterally.

[0023] (4) After the bracket is moved to the position where the film needs to be laid, it is fixed. The third drive mechanism drives the moving plate to move downward, so that the second clamp pulls the extended end of the film to the first clamp of the second film clamping assembly. After the first clamp clamps the extended end of the film, the second clamp releases the film under the action of the fourth drive mechanism. Then the moving plate is reset upward under the action of the third drive mechanism. The rotating rod rotates to the position where the first clamp attaches the film to the road surface. The first drive mechanism drives the mounting frame to move towards the first film clamping assembly until the mounting frame moves to the position adjacent to the first film clamping assembly and stops. The second clamp clamps the film under the action of the fourth drive mechanism. Then the cutting assembly cuts the film stretched under the clamping assembly laterally.

[0024] (5) Repeat steps (2) to (4) above until the road surface that needs to be covered with film is fully covered.

[0025] Compared with the prior art, the advantages of the present invention are as follows: By setting up a bracket, a membrane clamping assembly, and a cutting assembly, the mounting frame can move under the action of the first driving mechanism without manual pushing. Furthermore, the first clamp of the membrane clamping assembly can automatically clamp or release the protruding end of the membrane under the action of the second driving mechanism. The rotating rod can rotate under the action of the driving structure so that the first clamp can be applied to the road surface for membrane laying, or rotate to hold the first clamp against the membrane, without the need for manual membrane fixing. Moreover, after the membrane is laid at a set distance, the cutting assembly can automatically cut the membrane.

[0026] As can be seen from the above, the road construction film covering equipment of the present invention has a high degree of automation, requires fewer human intervention processes, and has high film laying efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the mounting bracket, clamping assembly, cutting assembly, and one of the film clamping assemblies; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 2 A schematic diagram of the membrane clamping assembly; Figure 5 for Figure 2 A partial structural diagram; Figure 6 for Figure 2 A schematic diagram of the clamping and cutting components; Figure 7 for Figure 2 A partial structural diagram of the cutting component; Figure 8 for Figure 1 A partial structural diagram; Figure 9 for Figure 8 A partial sectional view (cut from the first pin). Figure 10 for Figure 8 A partial sectional view (cut from the third pin). Figure 11 for Figure 8 A partial sectional view (cut from the second pin). Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that, unless otherwise stated, "a plurality of" means two or more, and the terms "upper," "lower," "left," "right," "top," "bottom," "front," "rear," etc., indicate the orientation or positional relationship based on the direction or positional relationship shown in the drawings. They are only for the convenience of 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 be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In the description of this invention patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an adhesive connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention patent based on the specific circumstances.

[0031] like Figures 1-11 As shown, the road construction film covering equipment of this preferred embodiment includes a bracket 1, a mounting frame 2, a film clamping assembly 3, a cutting assembly 4, and a clamping assembly 5, etc.

[0032] like Figure 1As shown, the bracket 1 can move relative to the road surface. In this embodiment, the bottom of the bracket 1 is equipped with casters 11 to facilitate moving the bracket 1 to the required position.

[0033] like Figure 1 , 8 As shown in ~11, the mounting bracket 2 can move relative to the bracket 1 in the front-back direction under the action of the first drive mechanism 6. In this embodiment, there are two sets of the first drive mechanism 6, which are spaced apart in the left-right direction.

[0034] The mounting frame 2 is equipped with a film-coating roller 21 extending in the left-right direction. The film-coating roller 21 can rotate around its axis and is used to wind the film to be laid on the road surface. The film can be made of fiberglass cloth or the like. The mounting frame 2 is also equipped with a leveling roller 22 located on the extension path of the film. The film is tensioned by the leveling roller 22 during the extension process so that the film is unfolded flat.

[0035] In this embodiment, as Figure 8 , 9 As shown, the first drive mechanism 6 includes a first drive member 61 fixedly mounted on the mounting bracket 2, a first gear 62 connected to the first drive member 61, and a rack 63 meshing with the first gear 62. The rack 63 extends in the front-rear direction and is fixed relative to the bracket 1. The first drive member 61 can be a motor. When the first drive member 61 is working, it drives the first gear 62 to rotate. Because the first gear 62 meshes with the rack 63, and the rack 63 is fixed, the first gear 62 will drive the mounting bracket 2 to move along the extension direction of the rack 63.

[0036] The bracket 1 is provided with a slide rail 12 extending in the front-to-back direction, and a rack 63 is provided on the side wall of the slide rail 12. The mounting frame 2 is provided with a first pin 23 extending in the left-to-right direction. A first roller 231 that can rotate around its axis is sleeved on the first pin 23. The first roller 231 can slide along the top wall of the slide rail 12. The design of the first roller 231 reduces the friction between the mounting frame 2 and the bracket 1, so that the moving resistance of the mounting frame 2 is small. A first bearing 232 can be provided between the first roller 231 and the first pin 23. Specifically, in this embodiment, the mounting frame 2 is provided with a mounting seat 20, and the first pin 23 is mounted on the mounting seat 20.

[0037] To prevent the first roller 231 from shifting relative to the slide rail 12 in the vertical or lateral direction, thus affecting the movement of the mounting frame 2, the mounting frame 2 is provided with a first anti-deviation component that positions the first roller 231 relative to the slide rail 12 in the vertical direction, and a second anti-deviation component that positions the first roller 231 relative to the slide rail 12 in the lateral direction. Of course, only one of the first or second anti-deviation components may be provided.

[0038] In this embodiment, as Figure 11As shown, the first anti-deviation assembly includes a second pin 24 and a second roller 241. One side wall of the slide rail 12 is on which the rack 63 is mounted, and the other side wall of the slide rail 12 has a strip groove 121 extending along its length. The second pin 24 extends in the left-right direction and is fixedly mounted on the mounting base 20. The second roller 241 is sleeved on the second pin 24 and can rotate around the axis of the second pin 24. The second roller 241 abuts against the top wall of the strip groove 121 and can slide along the second roller 241 to prevent the first roller 231 from tilting upward. A second bearing 242 can be provided between the second pin 24 and the second roller 241.

[0039] like Figure 10 As shown, the second anti-deviation assembly includes two third pins 25 located on the left and right sides of the slide rail 12, and two third rollers 251 correspondingly sleeved on the third pins 25. The third pins 25 extend vertically and are fixedly installed on the mounting base 20. Each third roller 251 rotates around the axis of the corresponding third pin 25. The two third rollers 251 abut against the left and right side walls of the slide rail 12 to prevent the first roller 231 from shifting in the left and right directions. In this embodiment, one of the third rollers 251 is located above the rack 63. A third bearing 252 can be provided between the third pin 25 and the corresponding third roller 251.

[0040] In this embodiment, two mounting seats 20 are provided on each of the left and right sides of the mounting frame 2. The two mounting seats 20 on the same side are spaced apart in the front-back direction. Each mounting seat 20 is provided with a first pin 23, a second pin 24 and a third pin 25. Of course, the number of mounting seats 20 on each side of the mounting frame 2 can be one or more.

[0041] Two membrane clamping assemblies 3 are spaced apart on the support 1 along the front-to-back direction, as shown below. Figure 1 , 4 As shown, each film clamping assembly 3 includes a rotating rod 31, a drive structure 32 connected to the rotating rod 31, a first clamp 33, and a second drive mechanism (not shown) connected to the first clamp 33. The rotating rod 31 extends in the left-right direction and is mounted on the bracket 1. The rotating rod 31 can rotate around its axis under the action of the drive structure 32. The first clamp 33 is mounted on the rotating rod 31. Under the action of the second drive mechanism, the first clamp 33 can clamp or release the protruding end of the film on the coating roller 21. The mounting frame 2 can reciprocate between the two film clamping assemblies 3, and during this process, one of the film clamping assemblies 3 clamps the protruding end of the film.

[0042] In this embodiment, there are multiple first clamps 33 and they are spaced apart on the rotating rod 31 in the left-right direction. Each first clamp 33 includes two clamping pieces 331 that can move closer or further apart from each other under the action of the second driving mechanism. The two clamping pieces 331 can clamp a local area of ​​the protruding end of the membrane.

[0043] like Figure 5 , 6 As shown, the clamping assembly 5 includes a movable plate 51, a third driving mechanism 52, a second clamp 53, and a fourth driving mechanism 54. The movable plate 51 is connected to the mounting frame 2 and moves up and down relative to the mounting frame 2 under the action of the third driving mechanism 52. In this embodiment, there are two movable plates 51 arranged at left and right intervals. The bottom of the mounting frame 2 is provided with a vertically extending fixed plate 26. There are two fixed plates 26 arranged at left and right intervals. One movable plate 51 is correspondingly installed on one fixed plate 26 and can move up and down relative to the fixed plate 26. The fixed plate 26 is also provided with a guide groove 261 for guiding the movable plate 51. The guide groove 261 extends vertically.

[0044] The second clamp 53 is mounted on the movable plate 51 and the two are fixed relative to each other in the vertical direction. The second clamp 53 can clamp or release the protruding end of the film on the coating roller 21 under the action of the fourth drive mechanism 54. When the mounting frame 2 is close to one of the film clamping components 3, the second clamp 53 clamps the protruding end of the film and pulls it down to the first clamp 33. After the first clamp 33 clamps the protruding end of the film, the second clamp 53 releases the film and returns to the position between the coating roller 21 and the first clamp 33.

[0045] The second clamp 53 includes two clamping plates 531 arranged sequentially in a front-to-back direction. Each clamping plate 531 extends in a left-to-right direction and its two ends are mounted on a movable plate 51 on the corresponding side. A gap exists between the two clamping plates 531 to hold the protruding end of the membrane within it. At least one clamping plate 531 can move towards or away from the other clamping plate 531 under the action of the fourth driving mechanism 54 to clamp or release the protruding end of the membrane. Multiple grooves 532 are spaced apart on the bottom edge of each clamping plate 531, and the grooves 532 on the two clamping plates 531 are arranged one-to-one. Figure 3 As shown, each of the first clamps 33 is located in a corresponding groove 532. The groove 532 is designed to facilitate the contact of the first clamp 33 with the membrane to clamp it.

[0046] The movable plate 51 can be moved upward to the extended end of the membrane. After the second clamp 53 clamps the extended end of the membrane, the movable plate 51 moves downward to the position of the extended end of the membrane at the first clamp 33, so that the first clamp 33 can clamp the extended end of the membrane. This eliminates the need for the user to manually pull the extended end of the membrane to the first clamp 33 each time, resulting in a high degree of automation and improved ease of use.

[0047] The drive structure 32, the second drive mechanism, the third drive mechanism 52, and the fourth drive mechanism 54 can all be cylinders, hydraulic cylinders, motors, etc.

[0048] like Figure 5 , 6 As shown in Figures 7 and 8, the cutting assembly 4 includes a blade 41, a fifth drive mechanism 42, a mounting strip 43, a slider 44, and a blade holder 45. The blade 41 is located below the coating roller 21.

[0049] The mounting strip 43 extends in the left-right direction and is fixedly connected to the mounting bracket 2. Specifically, the mounting strip 43 is mounted on the fixing plate 26. A guide rail 46 extending along its length is fixedly provided on the mounting strip 43. The slider 44 is slidably engaged with the guide rail 46 and is fixedly connected to the tool holder 45. The blade 41 is mounted on the tool holder 45. The slider 44 and the tool holder 45 move synchronously, and the blade 41 can move back and forth with the mounting bracket 2.

[0050] The blade holder 45 is connected to the fifth drive mechanism 42. The fifth drive mechanism 42 drives the blade holder 45 to move in the left and right direction. That is, the blade 41 is connected to the fifth drive mechanism 42, so that the blade 41 can move back and forth in the left and right direction under the action of the fifth drive mechanism 42 to cut the film extending from the film coating roller 21 laterally.

[0051] In this embodiment, the fifth drive mechanism 42 includes a second drive member 421, a second gear 422, and a gear ring 423. There are two second gears 422 that are spaced apart in the left-right direction. The axis of the second gear 422 extends vertically. One of the second gears 422 is connected to the second drive member 421. The two second gears 422 tension and mesh the two ends of the gear ring 423. The gear ring 423 is connected to the tool holder 45 by bolts 47. The second drive member 421 can be a motor.

[0052] The second drive unit 421 operates, driving the second gear 422 connected to it to rotate. Due to the power transmission of the other second gear 422 and the gear ring 423, both second gears 422 and the gear ring 423 are in a rotating state. During the rotation of the gear ring 423, it will drive the cutter holder 45 to move in the left and right direction, and the blade 41 will move synchronously to cut the film.

[0053] Preferably, the cutting assembly 4 further includes a sixth drive mechanism 48, to which the blade 41 is connected, enabling the blade 41 to rotate about a vertically extending axis, resulting in high cutting efficiency. The sixth drive mechanism 48 can be a cylinder, hydraulic cylinder, motor, etc.

[0054] To ensure the membrane adheres to the adhesive on the road surface, such as Figure 2 , 3As shown, the road construction film covering equipment also includes a pressure roller 7 mounted on the mounting frame 2. The pressure roller 7 can move up and down relative to the mounting frame 2 under the action of the seventh drive mechanism 71. When the protruding end of the film on the film covering roller 21 is clamped by the first clamp 33, the pressure roller 7 can press against the upper surface of the film. In this embodiment, there are two pressure rollers 7 spaced apart along the front-rear direction, located on the front and rear sides of the second clamp 53 respectively. When the mounting frame 2 moves forward, the pressure roller 7 located on the rear side presses against the upper surface of the film; when the mounting frame 2 moves backward, the pressure roller 7 located on the front side presses against the upper surface of the film. The seventh drive mechanism 71 can be a motor, cylinder, hydraulic cylinder, etc.

[0055] For ease of description, the two membrane assemblies 3 are referred to as the first membrane assembly and the second membrane assembly, respectively. The membrane covering method of the road construction membrane covering equipment in this embodiment includes the following steps:

[0056] (1) Manually pull the extended end of the film on the film coating roller 21 to the second clamp 53 of the clamping assembly 5. The second clamp 53 clamps the extended end of the film under the action of the fourth drive mechanism 54. The bracket 1 is fixed and the first drive mechanism 6 drives the mounting bracket 2 to move to the position adjacent to the first film clamping assembly.

[0057] (2) The third drive mechanism 52 drives the moving plate 51 to move downward, so that the second clamp 53 pulls the extended end of the film down to the first clamp 33 of the first clamping assembly. After the first clamp 33 clamps the extended end of the film, the second clamp 53 releases the film under the action of the fourth drive mechanism 54. Then the moving plate 51 is reset upward under the action of the third drive mechanism 52, and the rotating rod 31 is rotated to the position where the first clamp 33 sticks the film on the road surface under the action of the drive structure 32.

[0058] (3) The mounting frame 2 moves toward the direction of the second membrane clamping assembly under the action of the first drive mechanism 6. During this process, the membrane will be spread on the road surface. After the mounting frame 2 moves to the second membrane clamping assembly, it stops. The second clamp 53 clamps the membrane under the action of the fourth drive mechanism 54. Then the cutting assembly 4 cuts the membrane stretched below the clamping assembly 5 laterally.

[0059] (4) After the bracket 1 is moved to the position where the film needs to be laid, it is fixed. The third drive mechanism 52 drives the moving plate 51 to move downward, so that the second clamp 53 pulls the extended end of the film to the first clamp 33 of the second film clamping assembly. After the first clamp 33 clamps the extended end of the film, the second clamp 53 releases the film under the action of the fourth drive mechanism 54. Then the moving plate 51 is reset upward under the action of the third drive mechanism 52. The rotating rod 31 rotates to the position where the first clamp 33 of the second film clamping assembly applies the film to the road surface. The first drive mechanism 6 drives the mounting frame 2 to move towards the first film clamping assembly until the first drive mechanism 6 drives the mounting frame 2 to move to the position adjacent to the first film clamping assembly and stops. The second clamp 53 clamps the film under the action of the fourth drive mechanism 54. Then the cutting assembly 4 cuts the film stretched under the clamping assembly 5 laterally.

[0060] (5) Repeat steps (2) to (4) above until the road surface that needs to be covered with film is fully covered.

[0061] In this embodiment, a controller can also be installed on the bracket 1. The controller controls the automatic operation of each drive mechanism (first drive mechanism 6, second drive mechanism, etc.).

[0062] As can be seen from the above, the mounting frame 2 in this embodiment can move under the action of the first driving mechanism 6 without manual pushing, and the first clamp 33 of the film clamping assembly 3 can automatically clamp or release the protruding end of the film under the action of the second driving mechanism. The rotating rod 31 can rotate under the action of the driving structure 32 to the first clamp 33 to stick the film on the road surface for film laying, or to the first clamp 33 to clamp the film, without the need for manual fixing of the protruding end of the film; and after the film is laid at a set distance, the cutting assembly 4 can automatically cut the film.

[0063] In addition, the leveling roller 22 eliminates wrinkles in the film, and the first drive mechanism 6 drives the mounting frame 2 to move, ensuring uniform laying speed and accurate positioning. The pressing roller 7 achieves tight adhesion between the film and the road surface, avoiding problems such as poor film flatness, loose adhesion, and easy wrinkling, and significantly improving the film's enhancement effect on the road surface.

[0064] This embodiment utilizes a mechanized "lay-as-you-go" process to firmly embed the membrane as a reinforcing rib into the road surface, significantly improving the overall strength, crack resistance, and durability of the road. The crack resistance of the road is increased by more than 40%, and the flexural tensile strength is increased by more than 30%. This effectively delays the generation and expansion of road cracks, extends the service life of the road, and reduces the later maintenance costs. Furthermore, the membrane laying equipment used in this road construction enables efficient and precise membrane laying, preventing the risk of road cracking caused by factors such as temperature changes and base layer shrinkage.

[0065] In summary, the mulching equipment for road construction in this embodiment has a high degree of automation, requires fewer human intervention processes, has high mulching efficiency, eliminates the need for manual cloth pulling, laying and cutting, and can lay a single cloth at a speed of 1m / min, which is 6-8 times more efficient than manual laying, effectively shortening the road construction cycle and reducing labor costs.

Claims

1. A film covering device for road construction, comprising: Mounting frame (2) on which a film-coating roller (21) extending in the left-right direction is mounted. The film-coating roller (21) can rotate about its axis and is used to wind the film to be laid on the road surface. The mounting frame (2) can move in the front-back direction under the action of the first drive mechanism (6). Its features are, Also includes A bracket (1) is provided on which a mounting frame (2) is movably mounted, the bracket (1) being movable relative to the road surface; The film clamping assembly (3) has two parts and is spaced apart on the bracket (1) in the front-back direction. Each film clamping assembly (3) includes a rotating rod (31), a driving structure (32) connected to the rotating rod (31), a first clamp (33), and a second driving mechanism connected to the first clamp (33). The rotating rod (31) extends in the left-right direction and is mounted on the bracket (1). The rotating rod (31) can rotate around its axis under the action of the driving structure (32). The first clamp (33) is mounted on the rotating rod (31). Under the action of the second driving mechanism, the first clamp (33) can clamp or release the protruding end of the film on the film coating roller (21). The mounting bracket (2) can reciprocate between two clamping assemblies (3), and during this process, one of the clamping assemblies (3) clamps the protruding end of the membrane; The cutting assembly (4) includes a blade (41) that can move back and forth with the mounting frame (2) and a fifth drive mechanism (42) connected to the blade (41). The blade (41) is located below the coating roller (21) and can reciprocate in the left and right direction under the action of the fifth drive mechanism (42) to cut the film extending from the coating roller (21) laterally.

2. The road construction film covering equipment according to claim 1, characterized in that: It also includes a clamping assembly (5), which includes a moving plate (51), a third driving mechanism (52), a second clamp (53) and a fourth driving mechanism (54). The moving plate (51) is connected to the mounting frame (2) and moves up and down relative to the mounting frame (2) under the action of the third driving mechanism (52). The second clamp (53) is mounted on the moving plate (51) and the two are fixed relative to each other in the vertical direction. The second clamp (53) can clamp or release the protruding end of the film on the coating roller (21) under the action of the fourth driving mechanism (54). When the mounting frame (2) is close to one of the film clamping assemblies (3), the second clamp (53) clamps the protruding end of the film and pulls it down to the first clamp (33). After the first clamp (33) clamps the protruding end of the film, the second clamp (53) releases the film and returns to the position between the coating roller (21) and the first clamp (33).

3. The road construction film covering equipment according to claim 2, characterized in that: The movable plate (51) has two pieces spaced apart from each other on the left and right. The second clamp (53) includes two clamping plates (531) arranged sequentially in the front-back direction. Each clamping plate (531) extends in the left-right direction and is mounted on the movable plate (51) on the corresponding side at both ends. There is a gap between the two clamping plates (531) to hold the protruding end of the membrane. At least one of the clamping plates (531) can move toward or away from the other clamping plate (531) under the action of the fourth driving mechanism (54).

4. The road construction film covering equipment according to claim 3, characterized in that: The first clamp (33) has multiple clamps and is spaced apart on the rotating rod (31) in the left-right direction. Each first clamp (33) includes two clamping pieces (331) that can move closer or further apart from each other under the action of the second driving mechanism. The two clamping pieces (331) can clamp a local area of ​​the protruding end of the membrane. Each clamping plate (531) has a plurality of grooves (532) spaced apart on its bottom edge. The grooves (532) on the two clamping plates (531) are arranged one-to-one, and each of the first clamps (33) can be located at the grooves (532) one-to-one.

5. The road construction film covering equipment according to any one of claims 1 to 4, characterized in that: The cutting assembly (4) also includes a mounting strip (43), a slider (44), and a blade holder (45). The mounting strip (43) extends in the left-right direction and is fixedly connected to the mounting frame (2). A guide rail (46) extending along its length is fixedly provided on the mounting strip (43). The slider (44) is slidably engaged with the guide rail (46), and the slider (44) is fixedly connected to the blade holder (45). The blade (41) is mounted on the blade holder (45), and the blade holder (45) is connected to the fifth drive mechanism (42).

6. The road construction film covering equipment according to any one of claims 1 to 4, characterized in that: It also includes a pressure roller (7) mounted on the mounting frame (2), which can move up and down relative to the mounting frame (2) under the action of the seventh drive mechanism (71). When the extended end of the film on the film coating roller (21) is clamped by the first clamp (33), the pressure roller (7) can press against the upper surface of the film.

7. The road construction film covering equipment according to any one of claims 1 to 4, characterized in that: The first drive mechanism (6) includes a first drive member (61) fixedly mounted on the mounting bracket (2), a first gear (62) connected to the first drive member (61), and a rack (63) meshing with the first gear (62). The rack (63) extends in the front-back direction and is fixed relative to the bracket (1).

8. The film covering equipment for road construction according to claim 7, characterized in that: The bracket (1) is provided with a slide rail (12) extending in the front-back direction. The rack (63) is provided on the side wall of the slide rail (12). The mounting bracket (2) is provided with a first pin (23) extending in the left-right direction. A first roller (231) that can rotate around its axis is sleeved on the first pin (23). The first roller (231) can slide along the top wall of the slide rail (12).

9. The film covering equipment for road construction according to claim 8, characterized in that: The mounting bracket (2) is provided with a first anti-deviation component that positions the first roller (231) relative to the slide rail (12) in the vertical direction, and / or the mounting bracket (2) is provided with a second anti-deviation component that positions the first roller (231) relative to the slide rail (12) in the left-right direction.

10. A method for applying a film to a road surface construction film-coating device as described in claim 2, characterized in that, The two sandwich assemblies (3) are referred to as the first sandwich assembly and the second sandwich assembly, respectively. The coating method includes the following steps: (1) Manually pull the extended end of the film on the film coating roller (21) to the second clamp (53) of the clamping assembly (5). The second clamp (53) clamps the extended end of the film under the action of the fourth drive mechanism (54). The bracket (1) remains fixed. The first drive mechanism (6) drives the mounting bracket (2) to move to a position adjacent to the first film clamping assembly. (2) The third drive mechanism (52) drives the moving plate (51) to move downward, so that the second clamp (53) pulls the extended end of the film down to the first clamp (33) of the first clamping assembly. After the first clamp (33) clamps the extended end of the film, the second clamp (53) releases the film under the action of the fourth drive mechanism (54). Then the moving plate (51) resets upward under the action of the third drive mechanism (52), and the rotating rod (31) rotates to the position where the first clamp (33) attaches the film to the road surface under the action of the drive structure (32). (3) The mounting frame (2) moves toward the second clamping assembly under the action of the first driving mechanism (6). After the mounting frame (2) moves to the second clamping assembly, it stops. The second clamp (53) clamps the film under the action of the fourth driving mechanism (54). Then the cutting assembly (4) cuts the film stretched below the clamping assembly (5) laterally. (4) After the bracket (1) is moved to the position where the film needs to be laid, it is fixed. The third drive mechanism (52) drives the moving plate (51) to move downward, so that the second clamp (53) pulls the extended end of the film to the first clamp (33) of the second clamping assembly. After the first clamp (33) clamps the extended end of the film, the second clamp (53) releases the film under the action of the fourth drive mechanism (54). Then the moving plate (51) resets upward under the action of the third drive mechanism (52). The rotating rod (31) rotates to the position where the first clamp (33) applies the film to the road surface. The first drive mechanism (6) drives the mounting frame (2) to move towards the first clamping assembly until the mounting frame (2) moves to the position adjacent to the first clamping assembly and stops. The second clamp (53) clamps the film under the action of the fourth drive mechanism (54). Then the cutting assembly (4) cuts the film stretched under the clamping assembly (5) laterally. (5) Repeat steps (2) to (4) above until the road surface that needs to be covered with film is fully covered.

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