Film covering device for curing precast concrete component

Abstract

The utility model relates to the technical field of thin film covering devices, and discloses a thin film covering device for curing a precast concrete component, which comprises a moving frame, a rotating shaft and moving wheels, the winding roller support is fixedly connected to the upper side of the movable frame, and a thin film winding roller is installed on the winding roller support; the hollow roller is hollow and sleeves the rotating shaft, the inner diameter of the hollow roller is far larger than the outer diameter of the rotating shaft, and an inner hole of the hollow roller is connected with the periphery of the rotating shaft through an elastic assembly; the hollow roller is sleeved with the air bag sleeve in a tight fit mode, and the maximum outer diameter of the air bag sleeve after volume expansion is not smaller than the outer diameter of the moving wheel. By arranging the air bag sleeve, a plastic film is pressed by the air bag sleeve after being uncoiled from the film winding roller, and due to the fact that all positions of the surface of the air bag sleeve can deform, when the surface of a concrete member is uneven, the air bag sleeve enables the plastic film to be attached to the surface of the concrete member through deformation of the air bag sleeve, and therefore in the follow-up curing process, the plastic film is not damaged. And the surface curing effect of the concrete member is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to thin film covering device technical field, concretely is a thin film covering device for concrete prefabricated component maintenance. BACKGROUND

[0002] Concrete maintenance is the essential process of product protection in cast-in-place concrete construction process. At present, the construction personnel in the building industry mainly directly pours water maintenance when carrying out concrete maintenance, then covers a layer of plastic film on the surface of concrete structure, so that the moisture on the surface of concrete is not easy to release to keep wet, and the worker pours water on the surface of plastic film during the maintenance process, so that the concrete is in a wet state, and the plastic film needs to be attached to the surface of concrete and covered tightly.

[0003] In the prior art, when the plastic film is covered on the surface of the concrete member, the plastic film is mainly pressed on the surface of the concrete member by the gravity of the water after watering, so as to attach the plastic film to the surface of the concrete member, but this way may cause the plastic film not to be completely attached to the surface of the concrete member before watering due to the uneven surface of the concrete member, so that the local surface of the concrete member does not contact the plastic film during subsequent watering, which affects the maintenance effect of the concrete member. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a thin film covering device for concrete prefabricated component maintenance to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A thin film covering device for concrete prefabricated component maintenance comprises:

[0007] A moving frame is provided with a rotating shaft connected to the lower end, and a moving wheel is installed on each end of the rotating shaft.

[0008] A roll bracket is fixedly connected to the upper side of the moving frame, and a film roll is installed on the roll bracket.

[0009] A hollow roll is internally hollow and sleeved on the rotating shaft, the inner diameter of the hollow roll is larger than the outer diameter of the rotating shaft, and the inner hole of the hollow roll and the circumference of the rotating shaft are connected by an elastic component.

[0010] An air bag sleeve is tightly sleeved on the hollow roll, and the maximum outer diameter of the air bag sleeve after volume expansion is not less than the outer diameter of the moving wheel.

[0011] Further, the elastic assembly comprises a plurality of tension springs mounted between the hollow roller inner hole and the rotating shaft periphery, two ends of the tension springs are fixedly connected to the hollow roller inner hole wall and the rotating shaft periphery respectively, and the plurality of tension springs are arranged in an array along the axial direction of the rotating shaft.

[0012] Further, the hollow roller is made of a magnetic material, and the moving frame is fixedly connected with an electromagnet which is located above the air bag sleeve and cooperates with the hollow roller.

[0013] Further, the moving frame outer wall is fixedly connected with a mounting arm, a sliding rod is horizontally and penetratingly arranged at one end of the mounting arm away from the moving frame, the sliding rod is freely slidable on the mounting arm, a film pressing assembly is arranged at one end of the sliding rod away from the moving frame, and a reset assembly for driving the sliding rod to move towards the moving frame is arranged on the mounting arm.

[0014] Further, the film pressing assembly comprises a fixed block fixedly connected to one end of the sliding rod away from the moving frame, a cylinder is vertically arranged on the fixed block, a strip-shaped plate is horizontally fixedly connected to the cylinder rod of the cylinder, and a rubber pressing strip is fixedly connected to the lower surface of the strip-shaped plate.

[0015] Further, a guide column is vertically fixedly connected to the upper surface of the strip-shaped plate, ear blocks are fixedly connected to both sides of the fixed block, and guide holes are formed in the ear blocks and used for allowing the guide column to freely pass through.

[0016] Further, the reset assembly comprises a sliding block fixedly sleeved at the other end of the sliding rod, a spring is sleeved around the sliding rod, and both ends of the spring in the elastic direction are elastically abutted against the sliding block and the mounting arm respectively and correspondingly.

[0017] Further, a hollow cylinder is fixedly connected to the outer wall of the mounting arm, the hollow cylinder is sleeved on the sliding rod, the inner diameter of the hollow cylinder is greater than the outer diameter of the sliding rod, the sliding block is coaxially and freely slidably arranged in the hollow cylinder, a first interface is arranged at the side periphery of the hollow cylinder away from the sliding block, a communication cavity is formed in the strip-shaped plate, a second interface is arranged on the upper surface of the strip-shaped plate and penetrates the communication cavity, the first interface and the second interface are connected through an air pipe, and a plurality of air blowing holes are formed in the lower surface of the strip-shaped plate.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. By setting the air bag cover, the plastic film is unwound from the film roll, and the air bag cover is pressed against the plastic film. Since the surface of the air bag cover can deform everywhere, when the surface of the concrete member is uneven, the air bag cover deforms itself to make the plastic film adhere to the surface of the concrete member, so that the surface of the concrete member is better maintained during subsequent maintenance;

[0020] 2. The hollow roller is magnetically attracted by the electromagnet, so that after the operation is completed, the electromagnet is energized to generate magnetism, so that the hollow roller overcomes the force of the tension spring and moves upward, avoiding the air bag cover from contacting the ground, so that foreign matter adheres to the surface of the air bag cover, causing the plastic film to be damaged by the foreign matter adhering to the surface of the air bag cover;

[0021] 3. The air cylinder drives the strip-shaped plate to move downward, so that the rubber pressing strip presses the plastic film, and then the plastic film adheres to the surface of the concrete member and is not easily blown up by the wind, facilitating watering. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the film covering device for maintaining the concrete prefabricated member in the utility model;

[0023] Figure 2 It is a sectional view structure schematic view of Figure 1 ;

[0024] Figure 3 It is a sectional view structure schematic view of the hollow roller, the shaft and the air bag cover after assembly in the utility model;

[0025] Figure 4 It is a structure schematic view of the strip-shaped plate, the rubber pressing strip and the guide column after assembly in the utility model;

[0026] Figure 5 It is a sectional view structure schematic view of Figure 4 ;

[0027] Figure 6 It is a bottom view structure schematic view of Figure 4 .

[0028] In the drawing, the following signs are explained: 1, roll support; 2, film roll; 3, handle; 4, moving frame; 5, shaft; 6, moving wheel; 7, air bag cover; 8, hollow cylinder; 9, first interface; 10, rubber pressing strip; 11, connecting block; 12, ear block; 13, second interface; 14, strip-shaped plate; 15, guide column; 16, air cylinder; 17, mounting arm; 18, air blowing hole; 19, electromagnet; 20, hollow roller; 21, tension spring; 22, sliding rod; 23, sliding block; 24, spring; 25, communication cavity. DETAILED DESCRIPTION

[0029] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Please refer to Figures 1-6 The utility model provides a technical scheme: a kind of film covering device for concrete prefabricated component maintenance, including mobile frame 4, mobile frame 4 lower end is connected with rotating shaft 5 by installation bearing horizontal rotation, rotating shaft 5 both ends are each installed with mobile wheel 6, further by the rolling of mobile wheel 6, so that mobile frame 4 can be moved on placement surface, in addition, the upper side outer wall of mobile frame 4 is welded with handle 3, the upper side outer wall of mobile frame 4 is welded with roll bracket 1, roll bracket 1 is rotatably connected with film roll 2, and plastic film is wound on film roll 2;

[0031] Hollow roller 20 is sleeved on rotating shaft 5, hollow roller 20 is hollow inside, and the inner diameter of hollow roller 20 is much larger than the outer diameter of rotating shaft 5, so that the inner wall of hollow roller 20 and the circumference of rotating shaft 5 form a buffer space, and a plurality of tension springs 21 are welded on the circumference of rotating shaft 5 and the inner wall of hollow roller 20 correspondingly, the plurality of tension springs 21 are arranged along the length direction of rotating shaft 5, the number of tension springs 21 in each group is three, and the three tension springs 21 in each group are arranged along the axial direction of rotating shaft 5, so that hollow roller 20 can move freely along the radial direction of rotating shaft 5, and air bag sleeve 7 is tightly sleeved on hollow roller 20, the maximum outer diameter of air bag sleeve 7 after volume expansion is not less than the outer diameter of mobile wheel 6, in the embodiment, the maximum outer diameter of air bag sleeve 7 after volume expansion is consistent with the outer diameter of mobile wheel 6, workers unroll plastic film from film roll 2 and lay it on the surface of concrete component, move mobile frame 4 on the surface of concrete component, so that air bag sleeve 7 presses plastic film, under the action of self-weight of mobile frame 4, air bag sleeve 7 has a large extrusion force on plastic film, and air bag sleeve 7 can deform, so that air bag sleeve 7 is tightly attached to the surface of concrete component, so that plastic film can be extruded by air bag sleeve 7 and completely attached to the surface of concrete component;

[0032] In addition, the hollow roller 20 is made of magnetic material (i.e., the material of the hollow roller 20 is any one of iron, cobalt and nickel), and the moving frame 4 is fixedly connected with an electromagnet 19, which is located above the air bag sleeve 7 and cooperates with the hollow roller 20. When the electromagnet 19 is powered on, it generates magnetism and generates magnetic attraction force on the hollow roller 20, so that the hollow roller 20 overcomes the tension of the tension spring 21 and moves upward, so that the hollow roller 20 drives the air bag sleeve 7 to move upward, thereby making the air bag sleeve 7 separate from the ground, so that after the work is completed, the foreign matter on the ground will not adhere to the surface of the air bag sleeve 7, preventing the foreign matter from tearing the plastic film during subsequent plastic film laying;

[0033] The outer wall of the moving frame 4 is fixedly connected with a mounting arm 17, one end of the mounting arm 17 away from the moving frame 4 is welded with a connecting block 11, the connecting block 11 is horizontally provided with a sliding rod 22, the sliding rod 22 is freely slidable on the connecting block 11, and a fixed block is fixedly connected to one end of the sliding rod 22 away from the moving frame 4. A cylinder 16 is vertically installed on the fixed block, a strip-shaped plate 14 is horizontally fixedly connected to the cylinder rod of the cylinder 16, a rubber pressing strip 10 is fixedly connected to the lower surface of the strip-shaped plate 14, a guide column 15 is vertically fixedly connected to the upper surface of the strip-shaped plate 14, and ear blocks 12 are fixedly connected to the both sides of the fixed block. The ear blocks 12 are provided with guide holes for the guide column 15 to freely pass through. After the plastic film is laid on the surface of the concrete member, the cylinder 16 is started and drives the strip-shaped plate 14 to move downward to press the plastic film with the rubber pressing strip 10. At this time, the moving frame 4 continuously moves, so that the sliding rod 22 slides on the connecting block 11, that is, the rubber pressing strip 10 is in a relatively static state with the plastic film, and the rubber pressing strip 10 moves relative to the moving frame 4. In this way, the plastic film can be prevented from being blown up by the wind during laying, until another worker waters the plastic film. After watering, the cylinder 16 is started again and drives the strip-shaped plate 14 to move upward, so that the moving frame 4 can continue to move. Then, the cylinder 16 is started again and drives the strip-shaped plate 14 to move downward to press the plastic film with the rubber pressing strip 10. In this way, the moving frame 4 can intermittently press the plastic film laid on the surface of the concrete member during movement. The strip-shaped plate 14 will slide in the guide hole with the guide column 15 during upward and downward movement, so that the strip-shaped plate 14 will not rotate;

[0034] The other end of the sliding rod 22 is fixedly coaxially sleeved with the sliding block 23, the spring 24 is sleeved on the sliding rod 22, the two ends of the spring 24 in the elastic force direction are respectively and correspondingly elastically abut against the sliding block 23 and the mounting arm 17, the hollow cylinder 8 is fixedly connected to the outer wall of the mounting arm 17, the hollow cylinder 8 is sleeved on the sliding rod 22, and the inner diameter of the hollow cylinder 8 is much larger than the outer diameter of the sliding rod 22, the sliding block 23 is coaxially clamped in the hollow cylinder 8 and freely slides, the side circumference of the hollow cylinder 8 away from the sliding block 23 is provided with the first interface 9, the inside of the strip-shaped plate 14 is provided with the communicating cavity 25, the upper surface of the strip-shaped plate 14 is provided with the second interface 13 penetrating through the communicating cavity 25, the first interface 9 is connected with the second interface 13 through the air pipe, the lower surface of the strip-shaped plate 14 is provided with a plurality of air blowing holes 18, the hole openings of the air blowing holes 18 are towards the surface of the concrete member, when the sliding block 23 moves in the hollow cylinder 8, the air in the left side inner space of the hollow cylinder 8 is extruded, so that the air is transported to the second interface 13 from the first interface 9 and enters the communicating cavity 25 of the strip-shaped plate 14, and then the air is blown to the surface of the plastic film from the plurality of air blowing holes 18, so that the dust and other foreign matters possibly attached to the surface of the plastic film are blown away from the rubber pressing strip 10, and the rubber pressing strip 10 is prevented from being attached to the surface of the rubber pressing strip 10, so that the foreign matters are prevented from being pressed and broken or damaged to the plastic film when the rubber pressing strip 10 presses the plastic film.

[0035] The working principle of the utility model is: the moving frame 4 is pushed to the surface of the concrete member, then the plastic film on the film roller 2 is pulled down and laid on the surface of the concrete member, then the moving frame 4 is pushed, so that the moving wheel 6 rolls on the surface of the concrete member, when rolling, the air bag sleeve 7 presses the surface of the plastic film, under the action of the self-weight of the moving frame 4, the air bag sleeve 7 has great extrusion force to the plastic film, and the air bag sleeve 7 can be deformed, so that the air bag sleeve 7 is tightly attached to the surface of the concrete member, so that the plastic film can be extruded by the air bag sleeve 7 and completely attached to the surface of the concrete member;

[0036] Then the air cylinder 16 is started, the air cylinder rod of the air cylinder 16 is elongated to drive the strip-shaped plate 14 to move downwards so that the rubber pressing strip 10 presses the plastic film, at this time the moving frame 4 continues to move, because the rubber pressing strip 10 is in a pressing state with the plastic film and the surface of the concrete member, further, the rubber pressing strip 10, the plastic film and the surface of the concrete member have a large static friction force, so that the sliding rod 22 will overcome the elastic force of the spring 24 and move away from the mounting arm 17, so that the sliding rod 22 slides on the connecting block 11, that is, the rubber pressing strip 10 is in a relatively static state with the plastic film at this time, at the same time the spring 24 is compressed to accumulate elastic potential energy, and the rubber pressing strip 10 moves relative to the moving frame 4, so that when the plastic film is laid, the plastic film can be prevented from being blown up by the wind until another worker waters the plastic film, after watering, the air cylinder 16 is started again, and the strip-shaped plate 14 is moved upwards, so that the moving frame 4 can continue to move, then the air cylinder 16 is started again, and the strip-shaped plate 14 is driven to move downwards so that the rubber pressing strip 10 presses the plastic film, so as to repeat the above process, so that the moving frame 4 can intermittently press the plastic film laid on the surface of the concrete member when moving;

[0037] When the sliding rod 22 moves away from the mounting arm 17, the sliding block 23 will move in the hollow cylinder 8, further, the sliding block 23 extrudes the air in the left internal space of the hollow cylinder 8, so that the air is transported from the first interface 9 to the second interface 13 and enters the communication cavity 25 of the strip-shaped plate 14, further, the air is blown from the plurality of air blowing holes 18 to the surface of the plastic film, so that the dust and other foreign matters possibly attached to the surface of the plastic film are blown away from the rubber pressing strip 10, so as to avoid that the foreign matters are attached to the surface of the rubber pressing strip 10 and cause the foreign matters to break or damage the plastic film when the rubber pressing strip 10 presses the plastic film, when the air cylinder rod of the air cylinder 16 is shortened, the static friction force of the rubber pressing strip 10, the plastic film and the surface of the concrete member disappears, at this time the elastic potential energy accumulated by the spring 24 is released, further, the sliding block 23 is quickly driven to move reversely, and the rubber pressing strip 10 is reset.

[0038] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, changes, and adaptations can be made by those skilled in the art without departing from the spirit and scope of the present application, which is defined by the appended claims.

Claims

1. A film covering device for curing precast concrete components, characterized in that, The utility model relates to a kind of film rolling machine, including: Mobile frame (4), the lower end horizontal rotation connection of mobile frame (4) has pivot (5), each end of pivot (5) is equipped with mobile wheel (6); Roller bracket (1), roller bracket (1) is fixedly connected on the upper side of mobile frame (4), and film roll (2) is installed on the roller bracket (1); Hollow roller (20), hollow roller (20) is hollow inside and is sleeved on pivot (5), the inner diameter of hollow roller (20) is much larger than the outer diameter of pivot (5), and the inner hole of hollow roller (20) is connected between the circumference of pivot (5) by elastic component; Air bag sleeve (7), air bag sleeve (7) is tightly sleeved on hollow roller (20), the maximum outer diameter of air bag sleeve (7) after volume expansion is not less than the outer diameter of mobile wheel (6).

2. The film covering device for curing a concrete precast member according to claim 1, wherein The elastic component includes a plurality of tension springs (21) installed between the inner hole of hollow roller (20) and the circumference of pivot (5), both ends of the tension springs (21) are fixedly connected to the inner hole wall of hollow roller (20) and the circumference of pivot (5) respectively, and a plurality of the tension springs (21) are arranged in the axial direction of the pivot (5).

3. The film covering apparatus for curing a concrete precast member according to claim 1, wherein The hollow roller (20) is made of a magnetically conductive material, and the mobile frame (4) is fixedly connected with an electromagnet (19) located above the air bag sleeve (7) and cooperated with the hollow roller (20).

4. The film covering apparatus for curing a concrete precast member according to claim 1, wherein The outer wall of the mobile frame (4) is fixedly connected with a mounting arm (17), one end of the mounting arm (17) away from the mobile frame (4) is horizontally provided with a sliding rod (22), the sliding rod (22) freely slides on the mounting arm (17), one end of the sliding rod (22) away from the mobile frame (4) is provided with a film pressing assembly, and the mounting arm (17) is provided with a reset assembly for driving the sliding rod (22) to move towards the mobile frame (4).

5. The film covering apparatus for curing a concrete precast member according to claim 4, wherein The film pressing assembly includes a fixed block fixedly connected to one end of the sliding rod (22) away from the mobile frame (4), a pneumatic cylinder (16) is vertically installed on the fixed block, a strip-shaped plate (14) is fixedly connected to the pneumatic cylinder rod of the pneumatic cylinder (16), and a rubber pressing strip (10) is fixedly connected to the lower surface of the strip-shaped plate (14).

6. The film covering apparatus for curing a concrete precast member according to claim 5, wherein The upper surface of the strip-shaped plate (14) is vertically fixedly connected with a guide column (15), and the both sides of the fixed block are fixedly connected with ear blocks (12), the ear blocks (12) are provided with guide holes for the guide column (15) to freely pass through.

7. The film covering apparatus for curing a concrete precast member according to claim 6, wherein The reset assembly includes a sliding block (23) fixedly sleeved on the other end of the sliding rod (22), a spring (24) is sleeved on the sliding rod (22), and both ends of the spring (24) in the elastic force direction are elastically abutted against the sliding block (23) and the mounting arm (17) respectively and correspondingly.

8. The film covering apparatus for curing a concrete precast member according to claim 7, wherein The hollow cylinder (8) is fixed on the outer wall of the mounting arm (17), is sleeved on the sliding rod (22), and has an inner diameter much larger than the outer diameter of the sliding rod (22); the sliding block (23) is coaxially clamped in the hollow cylinder (8) and freely slides; the first interface (9) is arranged on the side edge of the hollow cylinder (8) away from the sliding block (23); the strip-shaped plate (14) is internally provided with a communication cavity (25); the upper surface of the strip-shaped plate (14) is provided with the second interface (13) penetrating through the communication cavity (25); the first interface (9) and the second interface (13) are connected through an air pipe; and the lower surface of the strip-shaped plate (14) is provided with a plurality of air blowing holes (18).

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