Thin film paving machine for concrete maintenance
By designing a membrane laying machine for concrete curing, the simultaneous spraying of water and laying of membrane were achieved, solving the problem of poor concrete curing effect in existing technologies and improving the protective effect of concrete and work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA STATE CONSTR PORT ENG GRP
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-10
AI Technical Summary
The lack of suitable equipment for concrete water spraying and membrane laying in the current technology results in poor concrete curing effect, excessively rapid water evaporation, uneven laying of plastic film, and inability to effectively prevent concrete dehydration and cracking.
Design a membrane laying machine for concrete curing that combines water spraying and membrane laying functions. The machine uses a frame, rollers, tension rollers, and absorbent cotton cloth to simultaneously spray water and lay plastic film, ensuring that the film adheres tightly to the concrete surface.
It improves the quality and efficiency of concrete curing, prevents moisture evaporation, ensures a smooth film coverage, and enhances the protective effect of concrete.
Smart Images
Figure CN224106941U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction equipment, specifically to a film paver for concrete maintenance. BACKGROUND
[0002] In building construction, after the completion of concrete pouring, in the case of hot weather and dry air, the water in the concrete will evaporate too quickly, causing the cement particles that have formed into gel bodies to be unable to fully hydrate and unable to transform into stable crystals, lacking sufficient adhesive force, which can cause flaky or powdery shedding on the surface of the concrete, and even possibly causing cracks in the concrete. In order to prevent the rapid evaporation of water in the concrete, the existing method is to perform watering maintenance after the completion of concrete pouring, and then lay a layer of plastic film on the concrete to retain moisture and reduce water evaporation. However, due to the lack of suitable watering and film laying equipment, manual watering of the concrete surface with a water pipe results in a large amount of water flow, which cannot fully soak the concrete, and the watering effect is poor. In addition, it is difficult to standardize the operation of manually laying plastic film on the wet concrete, and the plastic film cannot be completely laid flat on the concrete, which reduces the area of the plastic film laid and leaves air pockets on the concrete, further reducing the effect of concrete maintenance. Chinese patent 2024208903072 discloses a concrete maintenance device for building construction, with the authorization announcement number CN222649516U. The device includes a base and a rotating groove. The rotating groove is opened at the top end of the base. The bottom end of the rotating groove is rotationally connected to a shaft, and the outer side of the shaft is fixed with a rotating plate. The device is provided with an extension pipe and a spraying pipe. The length of the extension pipe is selected according to the maintenance range of the concrete, and the extension pipe is installed with the spraying pipe to adjust the maintenance range. The extension pipe can be detached during transportation, reducing the floor area and effectively expanding the spraying range. However, this concrete maintenance device cannot lay the covering film while spraying water. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides a film paver for concrete maintenance, which lays a water-retaining film on the concrete while spraying water for maintenance, improving the quality and efficiency of concrete maintenance.
[0004] The technical solution adopted by the utility model to solve the technical problems is as follows:
[0005] The utility model discloses a film paver for concrete maintenance includes the frame with walking wheel, the middle part fixed mounting of frame has the upper support of extending upwards and the lower support of extending downwards, install the roll on the upper support, the roll is used for winding plastic film, install upper tensioning roller and lower tensioning roller on the lower support, upper tensioning roller and lower tensioning roller along the longitudinal arrangement of lower support, the frame on the front of upper support is provided with front water tank, the bottom of front water tank is embedded with front water-absorbing cotton cloth, the upper end of front water-absorbing cotton cloth is communicated with the inner chamber of front water tank, and the lower end falls to the ground, the frame on the rear of upper support is provided with rear water tank, the bottom of rear water tank is embedded with rear water-absorbing cotton cloth, and the upper end of rear water-absorbing cotton cloth is communicated with the inner chamber of rear water tank, and the lower end falls to the ground.
[0006] Through the scheme, the paver can lay water-retaining film on the concrete while spraying water to maintain the concrete, improving the concrete maintenance quality and maintenance efficiency.
[0007] Preferably, the frame is a horizontally arranged rectangular frame structure, and the left and right sides of the front end of the frame are fixedly connected with downward-bent front support legs, and the left and right sides of the rear end of the frame are fixedly connected with downward-bent rear support legs, and the lower ends of the front support legs or the rear support legs are each provided with a walking wheel.
[0008] Through the scheme, the horizontal movement of the paver can be realized, the range of water spraying and film laying is expanded, and the work efficiency is improved.
[0009] Preferably, the inner chamber of the front water tank is provided with a transversely arranged front tank partition plate, the inner chamber of the front water tank is divided into an upper front water storage cavity and a lower front water drainage cavity by the front tank partition plate, the front tank partition plate is provided with a front tank electromagnetic valve for communicating the front water storage cavity and the front water drainage cavity, and the upper end of the front water-absorbing cotton cloth is embedded in the bottom of the front water drainage cavity.
[0010] Through the scheme, the water spraying speed and water consumption of the front water tank can be controlled.
[0011] Preferably, the inner chamber of the rear water tank is provided with a transversely arranged rear tank partition plate, the inner chamber of the rear water tank is divided into an upper rear water storage cavity and a lower rear water drainage cavity by the rear tank partition plate, the rear tank partition plate is provided with a rear tank electromagnetic valve for communicating the rear water storage cavity and the rear water drainage cavity, and the upper end of the rear water-absorbing cotton cloth is embedded in the bottom of the rear water drainage cavity.
[0012] Through the scheme, the water spraying speed and water consumption of the rear water tank can be controlled.
[0013] Preferably, the outer surfaces of the upper tensioning roller and the lower tensioning roller are provided with spiral rubber strips, and the front of the upper tensioning roller and the lower tensioning roller is provided with a guide roller.
[0014] Through the scheme, the friction between the upper tensioning roller, the lower tensioning roller and the film can be improved, and the flatness of the laid film can be ensured.
[0015] Preferably, the end of the guide roller is rotatably mounted on a guide roller support rod fixedly connected to the lower support; and the spiral rubber strip is a bidirectional spiral rubber strip with opposite spiral directions at two ends.
[0016] By the scheme, the film conveying efficiency can be improved, and the film can be kept flat during conveying.
[0017] Preferably, at least one of the upper tensioning roller and the lower tensioning roller is in driving connection with a driving motor, and the driving motor is mounted on the lower support.
[0018] By the scheme, the film can be actively conveyed by the power of the motor.
[0019] Thanks to the above structure, the paving machine can uniformly wet the surface of the concrete, so as to improve the curing effect on the concrete; the plastic film is tightly attached to the concrete and fully contacts the concrete, so as to prevent the plastic film from being hollow, thereby further improving the curing effect on the concrete. The water-retaining film can be laid on the concrete while the concrete is sprayed with water, so as to improve the curing quality and curing efficiency of the concrete. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a perspective structural schematic view of an embodiment of the utility model.
[0021] Figure 2 It is a perspective structural schematic view of an embodiment of the utility model. Figure 1 It is a half cut structural schematic view of an embodiment of the utility model.
[0022] Figure 3 It is a half cut structural schematic view of an embodiment of the utility model. Figure 2 It is a partial enlarged schematic view of A part of the utility model.
[0023] Figure 4 It is a partial enlarged schematic view of B part of the utility model. Figure 2 It is a partial enlarged schematic view of B part of the utility model.
[0024] Figure 5 It is a front structural schematic view of the upper tensioning roller and the lower tensioning roller. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0026] As Figure 1 ,Figure 2 The utility model discloses a film paver for concrete maintenance, which comprises a frame 1 with travelling wheels 101.
[0027] The frame 1 is a horizontally arranged rectangular frame structure, which is composed of longitudinal beams arranged on the left and right sides and a plurality of cross beams welded between the left and right longitudinal beams. Downward curved front support legs 102 are fixedly connected to the left and right sides of the front end of the frame 1. Downward curved rear support legs 103 are fixedly connected to the left and right sides of the rear end of the frame 1. The lower ends of the front support legs 102 or the rear support legs 103 are each provided with a travelling wheel 101.
[0028] An upward extending upper support 6 and a downward extending lower support 9 are fixedly installed at the middle part of the frame 1. The upper support 6 comprises two upper support plates fixedly installed on the left and right longitudinal beams of the frame 1 respectively. A roll 7 is installed on the upper support 6. The two ends of the roll 7 are rotatably installed on the upper support plates respectively. The roll 7 is used for winding a plastic film 8. In use, the plastic film 8 is wound on the roll 7 in advance. When the plastic film 8 is laid, the plastic film 8 is released from the roll 7.
[0029] The lower support 9 comprises two lower support plates fixedly connected to the left and right longitudinal beams of the frame 1 respectively. An upper tensioning roller 11 and a lower tensioning roller 12 are installed on the lower support 9. The upper tensioning roller 11 and the lower tensioning roller 12 are arranged longitudinally along the lower support 9 and the gap between the two rollers is tight enough to clamp the plastic film 8 passing through the gap. The two ends of the upper tensioning roller 11 and the lower tensioning roller 12 are rotatably installed on the lower support plates respectively. In use, the end of the plastic film 8 wound on the roll 7 is extended backward through the gap between the upper tensioning roller 11 and the lower tensioning roller 12. The upper tensioning roller 11 and the lower tensioning roller 12 are used to maintain the height position of the plastic film 8 and transmit and release the plastic film 8 backward.
[0030] A front water tank 3 is arranged on the frame 1 in front of the upper support 6. The front water tank 3 is a rectangular container welded by iron sheets. The outer wall of the front water tank 3 is welded on the longitudinal beam or the cross beam of the frame 1. A front water-absorbing cotton cloth 21 is embedded in the bottom of the front water tank 3. The front water-absorbing cotton cloth 21 is a soft textile fabric or non-woven fabric with a certain water absorption capacity. The upper end of the front water-absorbing cotton cloth 21 is connected to the inner cavity of the front water tank 3 and the lower end of the front water-absorbing cotton cloth 21 falls to the ground. The water in the front water tank 3 can be conducted to the ground through the front water-absorbing cotton cloth 21.
[0031] A rear water tank 4 is arranged on the rear of the upper support 6 of the frame 1, and the rear water tank 4 has the same structure as the front water tank 3. A rear water absorbing cotton cloth 22 is embedded in the bottom of the rear water tank 4. The upper end of the rear water absorbing cotton cloth 22 is communicated with the inner cavity of the rear water tank 4, and the lower end of the rear water absorbing cotton cloth 22 falls to the ground. The water in the rear water tank 4 can be conducted to the ground through the rear water absorbing cotton cloth 22.
[0032] As a further improvement of the utility model, the inner cavity of the front water tank 3 is provided with a front tank partition plate 16 arranged transversely. The front tank partition plate 16 divides the inner cavity of the front water tank 3 into a front water storage cavity 17 and a front water drainage cavity 18 arranged in a vertical manner. The upper end of the front water storage cavity 17 is open and provided with an openable tank cover. The front tank partition plate 16 is provided with a front tank electromagnetic valve 19 communicated with the front water storage cavity 17 and the front water drainage cavity 18. The front tank electromagnetic valve 19 is embedded in a mounting hole in the front tank partition plate 16. When the front tank electromagnetic valve 19 is opened, the water in the front water storage cavity 17 flows into the front water drainage cavity 18 through the front tank electromagnetic valve 19. When the front tank electromagnetic valve 19 is closed, the water is sealed in the front water storage cavity 17. The speed of water flow into the front water drainage cavity 18 can be controlled by opening and closing the front tank electromagnetic valve 19. The front tank electromagnetic valve 19 is an electromagnetic valve, which is a commonly used industrial automation basic element for controlling fluid by electromagnetic control. The front tank electromagnetic valve 19 is commonly used to control the opening and closing of water flow. The structure and working principle of the front tank electromagnetic valve 19 are known technologies, and will not be described in detail here.
[0033] The upper end of the front water absorbing cotton cloth 21 is embedded in the bottom of the front water drainage cavity 18. A long strip-shaped through hole is arranged on the bottom plate of the front water drainage cavity 18. The width of the through hole is adapted to the thickness of the front water absorbing cotton cloth 21, so that the front water absorbing cotton cloth 21 can be clamped into the through hole and the upper end of the front water absorbing cotton cloth 21 is soaked in the water in the front water drainage cavity 18. Figure 3 As shown in the drawings, a boss is arranged on the side wall of the through hole where the front water absorbing cotton cloth 21 is installed. After the front water absorbing cotton cloth 21 is installed in place, a strip-shaped pressing plate 23 is used to fix the front water absorbing cotton cloth 21 by cooperating with the boss on the side wall of the through hole. The pressing plate 23 and the boss on the side wall of the through hole can be connected by screws or buckles.
[0034] The rear water tank 4 has the same structure as the front water tank 3, and a rear tank partition plate 161 is arranged in the inner cavity of the rear water tank 4 in a transverse manner, which divides the inner cavity of the rear water tank 4 into a rear water storage cavity and a rear water drainage cavity arranged in a vertical manner, and a rear tank electromagnetic valve is arranged on the rear tank partition plate 161 and communicates the rear water storage cavity and the rear water drainage cavity, and the upper end of the rear water absorbing cotton cloth 22 is embedded in the bottom of the rear water drainage cavity.
[0035] As shown in Figure 5 , the outer surfaces of the upper tensioning roller 11 and the lower tensioning roller 12 are provided with spiral rubber strips 14, which are spiral rubber strips spirally wound on the upper tensioning roller 11 or the lower tensioning roller 12, and the spiral rubber strips 14 are bidirectional spiral rubber strips with opposite spiral directions at two ends of the upper tensioning roller 11 or the lower tensioning roller 12. When the upper tensioning roller 11 and the lower tensioning roller 12 clamp the plastic film 8 to convey it backward, the bidirectional spiral rubber strips push the two sides of the plastic film 8 outward, so that the plastic film 8 always maintains a flat state.
[0036] In addition, in order to ensure the stable transmission of the plastic film 8, as shown in Figure 1 , a guide roller 13 is arranged in front of the upper tensioning roller 11 and the lower tensioning roller 12; the end of the guide roller 13 is rotatably installed on a guide roller support rod 91, two guide roller support rods 91 are arranged in a group and are arranged at two ends of the guide roller 13, and the guide roller support rod 91 is fixedly connected to the lower support 9.
[0037] Finally, as a further improvement of the utility model, at least one of the upper tensioning roller 11 and the lower tensioning roller 12 is in transmission connection with the driving motor 10, and the driving motor 10 is installed on the lower support 9.
[0038] As shown in Figure 1 , Figure 2 , in use, first, fill the front water tank 3 and the rear water tank 4 with water; for the water tank with a partition plate, fill the front water storage cavity 17 and the rear water storage cavity with water, open the electromagnetic valve on the partition plate, wet the front water absorbing cotton cloth 21 and the rear water absorbing cotton cloth 22 with a small amount of water, then close the electromagnetic valve, push the frame 1 to the edge of the concrete site to be maintained, and complete the preparation work.
[0039] The plastic film 8 is wound on the winding roller 7, and the end of the plastic film 8 extends downward, passes through the guide roller 13, extends to the ground behind the frame 1 through the gap between the upper tension roller 11 and the lower tension roller 12. For the embodiment without the driving motor 10, the end of the plastic film 8 needs to be laid on the ground and pressed by a weight such as a brick during use, at this time, the lower end of the front absorbent cotton cloth 21 is in contact with the ground in front, the lower end of the rear absorbent cotton cloth 22 is in contact with the upper surface of the plastic film 8, the electromagnetic valves in the front water tank 3 and the rear water tank 4 are opened, after the front absorbent cotton cloth 21 and the rear absorbent cotton cloth 22 are fully soaked, the frame 1 is pushed forward, the fully soaked front absorbent cotton cloth 21 sweeps the surface of the concrete to wet the concrete, the plastic film 8 is gradually released from the winding roller 7 and laid on the concrete ground wetted by the front absorbent cotton cloth 21, and the fully soaked rear absorbent cotton cloth 22 sweeps the laid plastic film 8, so that the plastic film 8 is tightly attached to the surface of the concrete. As shown in Figure 3 In order to improve the sagging performance and better adhere to the ground, a steel wire 24 can be embedded in the lower end of the front absorbent cotton cloth 21 or the rear absorbent cotton cloth 22.
[0040] For the embodiment with the driving motor 10, the driving motor 10 can be used to drive the upper tension roller 11 and the lower tension roller 12 to rotate, and the plastic film 8 is released to the ground, without the need to press the plastic film 8 with a weight such as a brick in advance, only a small amount of water is needed to wet the end of the plastic film 8 and adhere to the ground. During use, the speed of the driving motor 10 is controlled to adapt the release speed of the plastic film 8 to the walking speed of the frame 1.
[0041] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A film laying machine for concrete curing, comprising a frame (1) with wheels (101), characterized in that: An upwardly extending upper bracket (6) and a downwardly extending lower bracket (9) are fixedly installed in the middle of the frame (1). A winding roller (7) is installed on the upper bracket (6) for winding a plastic film (8). An upper tension roller (11) and a lower tension roller (12) are installed on the lower bracket (9). The upper tension roller (11) and the lower tension roller (12) are arranged longitudinally along the lower bracket (9). The frame (1) in front of the upper bracket (6) is... A front water tank (3) is provided on the upper bracket (6), and a front absorbent cotton cloth (21) is embedded at the bottom of the front water tank (3). The upper end of the front absorbent cotton cloth (21) is connected to the inner cavity of the front water tank (3), and the lower end hangs down to the ground. A rear water tank (4) is provided on the frame (1) behind the upper bracket (6), and a rear absorbent cotton cloth (22) is embedded at the bottom of the rear water tank (4). The upper end of the rear absorbent cotton cloth (22) is connected to the inner cavity of the rear water tank (4), and the lower end hangs down to the ground.
2. The membrane laying machine for concrete curing according to claim 1, characterized in that: The frame (1) is a horizontally arranged rectangular frame structure. The front and left sides of the front end of the frame (1) are fixedly connected with downward-curved front support legs (102), and the rear and left sides of the rear end of the frame (1) are fixedly connected with downward-curved rear support legs (103). The lower ends of the front support legs (102) or the rear support legs (103) are equipped with wheels (101).
3. A membrane laying machine for concrete curing according to claim 1 or 2, characterized in that: The inner cavity of the front water tank (3) has a horizontally arranged front tank partition (16), which divides the inner cavity of the front water tank (3) into a front water storage chamber (17) and a front drainage chamber (18) arranged vertically. A front tank solenoid valve (19) connecting the front water storage chamber (17) and the front drainage chamber (18) is provided on the front tank partition (16). The upper end of the front absorbent cotton cloth (21) is embedded in the bottom of the front drainage chamber (18).
4. A membrane laying machine for concrete curing according to claim 1 or 2, characterized in that: The rear water tank (4) has a horizontally arranged rear tank partition (161) in its inner cavity. The rear tank partition (161) divides the inner cavity of the rear water tank (4) into a rear water storage chamber and a rear drainage chamber arranged vertically. A rear tank solenoid valve that connects the rear water storage chamber and the rear drainage chamber is provided on the rear tank partition (161). The upper end of the rear absorbent cotton cloth (22) is embedded in the bottom of the rear drainage chamber.
5. A membrane laying machine for concrete curing according to claim 1 or 2, characterized in that: The outer surfaces of the upper tension roller (11) and the lower tension roller (12) are provided with spiral rubber strips, and guide rollers (13) are provided in front of the upper tension roller (11) and the lower tension roller (12).
6. The membrane laying machine for concrete curing according to claim 5, characterized in that: The end of the guide roller (13) is rotatably mounted on the guide roller support (91), and the guide roller support (91) is fixedly connected to the lower bracket (9); the spiral rubber strip is a bidirectional spiral rubber strip with opposite spiral directions at both ends, with the middle of the upper tension roller (11) or the lower tension roller (12) as the boundary.
7. A membrane laying machine for concrete curing according to claim 1 or 2, characterized in that: At least one of the upper tensioning roller (11) and the lower tensioning roller (12) is connected to the drive motor (10), which is mounted on the lower support (9).