Film paving device for municipal road construction

Abstract

The utility model discloses a film paving device for municipal road construction, and particularly relates to the field of road construction, the film paving device comprises a rack, two wheels and two guide wheels are rotatably arranged on the rack, a film laminating roller is further rotatably arranged on the rack, and a film is arranged on the film laminating roller; the film laying device further comprises a tensioning mechanism, the tensioning mechanism comprises a rotationally-arranged tensioning roller, the film is in transmission connection with the tensioning roller, and the tensioning roller is used for tensioning the film in the film laying process. And a compression roller is rotationally arranged on the rack. According to the utility model, through the tensioning mechanism, the film can be ensured to be in a tensioning state during film paving, the problem that bubbles exist between the film and concrete due to loosening of the film during film paving is avoided, and the film can be further flattened during film paving through the compression roller, so that the sealing between the film and the concrete is further ensured, and the service life of the film is prolonged. The problem that the overall adhesion performance is affected due to the fact that the thin film and the concrete are not firmly combined is avoided, and therefore the strength of the concrete is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, and more specifically, to a membrane laying device for municipal road construction. Background Art

[0002] Road engineering refers to the entire process of planning, design, construction, maintenance and management with roads as the object and the engineering entities involved.

[0003] At present, my country attaches more and more importance to preventive maintenance of highways. Considering the large traffic volume and serious diseases and conditions on national and provincial trunk roads, many national and provincial trunk roads have begun to implement preventive maintenance one after another, and initial results have been achieved. At present, the simplest and most effective preventive maintenance method is to cover the concrete surface with film after the concrete is poured, when the concrete surface has solidified but not yet completely solidified. The film can quickly seal the moisture in the concrete inside and form a long-term wet maintenance environment with the concrete surface. In addition, do a good job of surface watering to keep the film surface moist, which helps to keep the concrete surface moist and prevent premature evaporation of moisture, which is conducive to the full hydration and strength development of the concrete.

[0004] However, from the actual situation, there are still some problems in the construction when carrying out preventive maintenance on national and provincial trunk roads. At present, the film laying for road construction is often done by manually pulling the film roller with a hand-held rope to roll the film on the concrete surface. When laying the film, gaps and bubbles are likely to exist between the film and the concrete, resulting in a weak bond between the film and the concrete, affecting the overall adhesion performance, thereby causing problems affecting the strength of the concrete. Utility Model Content

[0005] The utility model provides a membrane laying device for municipal road construction, and aims to solve the problem that, currently, gaps and bubbles are easily present between the membrane and concrete during membrane laying, resulting in a weak bond between the membrane and concrete, affecting the overall adhesion performance, thereby causing a problem of affecting the strength of the concrete.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a film laying device for municipal road construction, comprising: a frame, two wheels and two guide wheels are rotatably arranged on the frame, a film coating roller is also rotatably arranged on the frame, and a film is arranged on the film coating roller;

[0007] The film laying device also includes a tensioning mechanism, which includes a rotatably arranged tensioning roller, to which the film is transmission-connected, and the tensioning roller is used to tension the film during the film laying process;

[0008] A pressure roller is rotatably arranged on the frame, and the pressure roller is used to flatten the film.

[0009] In a preferred embodiment, the tensioning mechanism also includes a bracket, a slide groove is opened on the bracket, a slider is slidably arranged in the slide groove, the tensioning roller is rotatably arranged on the slider, an elastic member 1 is fixedly arranged on the slider, and the end of the elastic member 1 away from the slider is fixedly arranged on the inner wall of the slide groove.

[0010] In a preferred embodiment, a limit shaft is fixedly arranged in the slide groove, and the slider is slidably sleeved on the outer side of the limit shaft.

[0011] In a preferred embodiment, the film laying device further comprises a spray mechanism, which comprises a water tank, which is fixedly arranged on the frame, and the bottom of the water tank is connected to a connecting pipe, and the connecting pipe is connected to a plurality of nozzles.

[0012] In a preferred embodiment, the film laying device also includes a locking mechanism, which includes a rotating shaft, which is fixedly connected to the film coating roller, and the rotating shaft is rotatably set on a frame. A side box is fixedly set on the frame, and the rotating shaft extends into the side box and is fixedly connected to a ratchet. A pawl is rotatably set in the side box, and the ratchet is engaged with the pawl. An elastic member 2 is fixedly set on the pawl, and one end of the elastic member 2 away from the pawl is fixedly set on the inner wall of the side box.

[0013] In a preferred embodiment, the film laying device also includes a mounting mechanism, which includes a mounting block, the mounting block is fixedly mounted on the end of the coating roller, a side block is fixedly mounted on the end of the rotating shaft, a mounting groove is opened on the side block, the mounting block is installed in the mounting groove, a screw is threadedly connected to the inner thread of the mounting block, and the screw is threadedly connected in the side block.

[0014] The beneficial effects of the utility model are:

[0015] The utility model can ensure that the film is in a tensioned state through the tensioning mechanism while laying the film, thereby preventing the film from becoming loose during laying the film, which may lead to the problem of bubbles between the film and the concrete. The film can be further flattened by the pressure roller while laying the film, thereby further ensuring the seal between the film and the concrete, avoiding a loose bond between the film and the concrete, affecting the overall adhesion performance, and thus avoiding the problem of affecting the strength of the concrete.

[0016] The utility model provides a spraying mechanism to spray water on the film after film laying while laying the film, so that the film can be better attached to the concrete under the gravity of the water and is not easily blown away by wind. In addition, the water spraying can keep the film surface moist, which helps to keep the concrete surface moist and prevent the water from evaporating prematurely.

[0017] The utility model provides a locking mechanism to prevent the frame from stopping suddenly when encountering an obstacle during movement, so that when the pulling force disappears, the laminating roller is prevented from continuing to rotate under the action of inertia, resulting in the problem of excessive release of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0019] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the tensioning mechanism of the utility model.

[0021] Figure 4 It is a schematic structural diagram of the laminating roller, tensioning roller and pressing roller of the utility model.

[0022] Figure 5 It is a schematic cross-sectional structural diagram of the side box of the utility model.

[0023] Figure 6 It is a schematic cross-sectional view of a partial structure of the utility model.

[0024] Figure 7 for Figure 6 Enlarged view of part A.

[0025] The accompanying drawings are marked as follows: 1. frame; 11. wheel; 12. guide wheel; 2. coating roller; 21. film; 3. tensioning mechanism; 31. bracket; 32. slide groove; 33. slider; 34. tensioning roller; 35. elastic part 1; 4. pressure roller; 5. spray mechanism; 51. water tank; 52. connecting pipe; 53. spray head; 6. locking mechanism; 61. rotating shaft; 62. side box; 63. ratchet; 64. pawl; 65. elastic part 2; 7. mounting mechanism; 71. mounting block; 72. side block; 73. mounting groove; 74. screw. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] Refer to the instruction manual Figures 1 to 4 A film laying device for municipal road construction comprises: a frame 1, on which two wheels 11 and two guide wheels 12 are rotatably provided, and a film coating roller 2 is also rotatably provided on the frame 1, on which a film 21 is provided;

[0028] The film laying device further comprises a tensioning mechanism 3, the tensioning mechanism 3 comprises a rotatably arranged tensioning roller 34, the film 21 is transmission-connected to the tensioning roller 34, and the tensioning roller 34 is used to tension the film 21 during the film laying process;

[0029] A pressure roller 4 is rotatably arranged on the frame 1 , and the pressure roller 4 is used to flatten the film 21 .

[0030] It should be noted that if Figure 4 As shown, the tensioning roller 34 is arranged between the laminating roller 2 and the pressure roller 4, and the highest point of the tensioning roller 34 is higher than the lowest point of the roller of the laminating roller 2, so that during lamination, when the film 21 on the laminating roller 2 is about to be used up, the tensioning roller 34 can always provide tensioning effect for the film 21.

[0031] The specific implementation scenario is as follows: when laying the film, one end of the film 21 is pressed and fixed on the concrete by a heavy object, and then the frame 1 is pushed to move slowly, and the two wheels 11 and two guide wheels 12 on the frame 1 are used to make the device move on the concrete. During the movement of the device, the coating roller 2 is rotated to release the film 21 and lay it on the concrete. While laying the film, the film 21 is tensioned by the tensioning roller 34 to prevent the film 21 from becoming loose during film laying, resulting in bubbles between the film 21 and the concrete. When the film 21 is laid on the concrete, the film 21 is further flattened by the pressure roller 4 to make the film 21 close to the concrete, thereby ensuring the sealing between the film 21 and the concrete, avoiding the film 21 and the concrete from having a loose bond, affecting the overall adhesion performance, and thus causing the problem of affecting the strength of the concrete.

[0032] Further, such as Figure 3 As shown, the tensioning mechanism 3 also includes a bracket 31, a slide groove 32 is opened on the bracket 31, a slider 33 is slidably arranged in the slide groove 32, a tensioning roller 34 is rotatably arranged on the slider 33, an elastic member 35 is fixedly arranged on the slider 33, and the end of the elastic member 35 away from the slider 33 is fixedly arranged on the inner wall of the slide groove 32.

[0033] It should be noted that the elastic member 35 is a spring. When laying the film, the frame 1 moves and pulls the coating roller 2 to rotate through the film 21. At this time, the film 21 will apply downward pressure to the tensioning roller 34, causing the spring to contract and move the tensioning roller 34 downward. At the same time, under the action of the spring, the tensioning roller 34 will apply an upward force to the film 21, so that the tensioning roller 34 can assist in tensioning the film 21, thereby avoiding the film 21 from becoming loose during laying the film, resulting in bubbles between the film 21 and the concrete.

[0034] It should also be noted that during the film laying process, the frame 1 moves, causing the film 21 to pull the coating roller 2 to rotate and lay the film. If the frame 1 moves a little faster, when the film 21 pulls the coating roller 2 to rotate and lay the film, the film 21 may be easily damaged due to excessive pulling force. At this time, the spring can play a certain buffering role to avoid the problem of damage to the film 21 caused by excessive pulling force.

[0035] Further, such as Figure 3 As shown, a limit shaft is fixedly arranged in the slide groove 32, and the slider 33 is slidably sleeved on the outer side of the limit shaft.

[0036] It should be noted that, by limiting the position of the slider 33 by the limiting shaft, the tensioning roller 34 can only move in the vertical direction.

[0037] However, in the above technical solution, since the film 21 is usually a thin layer, after the film is laid, the film 21 is easily blown up by the wind. In the prior art, it is usually necessary to follow the construction workers while laying the film to prevent sandbags from being pressed tightly on the film 21 after laying the film, so as to avoid the problem of the film 21 being blown up by the wind. However, the labor intensity of the construction workers is increased by manually placing sandbags, and the sandbags are usually placed at a certain distance on the film 21 after laying the film. At this time, the position where the sandbags are not placed is still easy to be blown up by the wind. Therefore, the utility model also provides a spray mechanism 5 to solve the above problem.

[0038] Further, such as Figure 2 As shown, the film laying device also includes a spray mechanism 5, which includes a water tank 51, which is fixedly arranged on the frame 1, and the bottom of the water tank 51 is connected to a connecting pipe 52, and the connecting pipe 52 is connected to a plurality of nozzles 53.

[0039] It should be noted that a water pump is also provided in the water tank 51, and the water outlet end of the water pump is connected to the connecting pipe 52. During the film laying process, the water pump is driven, and under the action of the connecting pipe 52 and a plurality of nozzles 53, water is sprayed onto the laid film 21 through the nozzles 53, so that under the gravity of the water, the film 21 is better attached to the concrete and is not easily blown away by the wind.

[0040] It should also be noted that, currently, after laying the membrane, it is usually necessary to spray water on the film 21 after laying the membrane, which can keep the membrane surface moist, help maintain the moist state of the concrete surface, and prevent the premature evaporation of water. Therefore, by spraying water on the laid film 21 while laying the membrane, the moist state of the concrete surface can be further maintained, preventing the premature evaporation of water, thereby increasing the strength and durability of the concrete.

[0041] However, in the above technical scheme, in the process of pushing the frame 1 to move slowly, it is inconvenient to ensure that the moving speed always remains uniform. If the frame 1 encounters an obstacle during the movement, resulting in the problem that the frame 1 suddenly stops, at this time, because the film is still being laid, the film coating roller 2 is pulled by the film 21 to rotate and lay the film. If the frame 1 suddenly stops, the pulling force disappears. At this time, the film coating roller 2 will continue to rotate under the action of inertia, resulting in excessive release of the film 21 in a short time. When the film 21 is excessively released, the film 21 cannot be tightly attached to the tensioning roller 34, resulting in the tensioning roller 34 being unable to provide a tensioning effect for the film 21. At this time, if the frame 1 continues to move, it is easy to cause the section of the film 21 that is excessively released in a short time to easily cause bubbles to form between the film 21 and the concrete during the film laying process. Therefore, the utility model also provides a locking mechanism 6 to solve the above problem.

[0042] Further, such as Figure 5 As shown, the film laying device also includes a locking mechanism 6, which includes a rotating shaft 61, which is fixedly connected to the coating roller 2, and the rotating shaft 61 is rotatably set on the frame 1, on which a side box 62 is fixedly set, the rotating shaft 61 extends into the side box 62 and is fixedly connected to a ratchet 63, a pawl 64 is rotatably set in the side box 62, the ratchet 63 is engaged with the pawl 64, and an elastic member 65 is fixedly set on the pawl 64, and one end of the elastic member 65 away from the pawl 64 is fixedly set on the inner wall of the side box 62.

[0043] It should be noted that the elastic member 65 is a spring. While the film 21 is used to pull the coating roller 2 to rotate and release the film, the rotating shaft 61 drives the ratchet 63 to rotate. At this time, under the action of the pawl 64 and the spring, the coating roller 2 can rotate normally. When the pulling force disappears, under the action of the pawl 64 and the elastic deformation of the spring, the spring will apply an extrusion force to the pawl 64, so that the pawl 64 acts on the ratchet 63, thereby offsetting the inertial force generated when the pulling force disappears, so that the coating roller 2 can stop, avoiding the problem of excessive release of the film 21.

[0044] Further, such as Figure 7 As shown, the film laying device also includes a mounting mechanism 7, which includes a mounting block 71. The mounting block 71 is fixedly mounted on the end of the coating roller 2. A side block 72 is fixedly mounted on the end of the rotating shaft 61. A mounting groove 73 is provided on the side block 72. The mounting block 71 is installed in the mounting groove 73. A screw 74 is threadedly connected to the mounting block 71, and the screw 74 is threadedly connected to the side block 72.

[0045] It should be noted that when the film 21 on the coating roller 2 is used up, the coating roller 2 needs to be replaced. The coating roller 2 can be released by unscrewing the screw 74 out of the side block 72 and the mounting block 71. Then the coating roller 2 can be removed and replaced, and the mounting block 71 on the new coating roller 2 can be installed in the mounting groove 73, and the screw 74 can be screwed into the mounting block 71 and the side block 72. The casing completes the disassembly and replacement of the coating roller 2.

[0046] The specific implementation scenario is as follows: when laying the film, one end of the film 21 is pressed and fixed on the concrete by a heavy object, and then the frame 1 is pushed to move slowly, and the two wheels 11 and two guide wheels 12 on the frame 1 are used to make the device move on the concrete. During the movement of the device, the film coating roller 2 is rotated to release the film 21 and lay it on the concrete. While laying the film, the film 21 is tensioned by the tensioning roller 34 to prevent the film 21 from becoming loose during laying, resulting in bubbles between the film 21 and the concrete, and then the film 21 is further flattened by the pressing roller 4 to make the film 21 close to the concrete. On the concrete, the spray mechanism 5 sprays water onto the laid film 21 through the nozzle 53, so that under the gravity of the water, the film 21 can be better attached to the concrete and not easily blown up by the wind. The water spraying can keep the film surface moist, which helps to keep the concrete surface moist and prevent premature evaporation of water. In addition, when the frame 1 encounters an obstacle during movement and stops suddenly, causing the pulling force to disappear, the locking mechanism 6 composed of the ratchet 63, the pawl 64 and the elastic member 65 can prevent the coating roller 2 from continuing to rotate under the action of inertia, resulting in the problem of excessive release of the film 21.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A membrane laying device for municipal road construction, characterized in that: include: A frame (1), two wheels (11) and two guide wheels (12) are rotatably provided on the frame (1), a film coating roller (2) is also rotatably provided on the frame (1), and a film (21) is provided on the film coating roller (2); The film laying device also includes a tensioning mechanism (3), the tensioning mechanism (3) includes a rotatably arranged tensioning roller (34), the film (21) is transmission-connected to the tensioning roller (34), and the tensioning roller (34) is used to tension the film (21) during the film laying process; A pressing roller (4) is rotatably arranged on the frame (1), and the pressing roller (4) is used to flatten the film (21); The film laying device also includes a locking mechanism (6), which includes a rotating shaft (61), the rotating shaft (61) is fixedly connected to the film coating roller (2), the rotating shaft (61) is rotatably arranged on the frame (1), a side box (62) is fixedly arranged on the frame (1), the rotating shaft (61) extends into the side box (62) and is fixedly connected to a ratchet (63), a pawl (64) is rotatably arranged in the side box (62), the ratchet (63) is meshed with the pawl (64), and an elastic member 2 (65) is fixedly arranged on the pawl (64), and one end of the elastic member 2 (65) away from the pawl (64) is fixedly arranged on the inner wall of the side box (62).

2. A membrane laying device for municipal road construction according to claim 1, characterized in that: The tensioning mechanism (3) further comprises a bracket (31), a slide groove (32) is provided on the bracket (31), a slider (33) is slidably arranged in the slide groove (32), a tensioning roller (34) is rotatably arranged on the slider (33), an elastic member (35) is fixedly arranged on the slider (33), and an end of the elastic member (35) away from the slider (33) is fixedly arranged on the inner wall of the slide groove (32).

3. A membrane laying device for municipal road construction according to claim 2, characterized in that: A limit shaft is fixedly arranged in the slide groove (32), and a sliding block (33) is slidably sleeved on the outer side of the limit shaft.

4. A membrane laying device for municipal road construction according to claim 3, characterized in that: The film laying device also includes a spray mechanism (5), the spray mechanism (5) includes a water tank (51), the water tank (51) is fixedly arranged on the frame (1), the bottom of the water tank (51) is connected to a connecting pipe (52), and the connecting pipe (52) is connected to a plurality of spray heads (53).

5. A membrane laying device for municipal road construction according to claim 4, characterized in that: The film laying device also includes a mounting mechanism (7), the mounting mechanism (7) includes a mounting block (71), the mounting block (71) is fixedly mounted on the end of the film coating roller (2), a side block (72) is fixedly mounted on the end of the rotating shaft (61), a mounting groove (73) is formed on the side block (72), the mounting block (71) is mounted in the mounting groove (73), a screw rod (74) is threadedly connected to the inner thread of the mounting block (71), and the screw rod (74) is threadedly connected to the inner thread of the side block (72).

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