A construction device for acrylic template of box culvert concrete

Abstract

This invention discloses an acrylic formwork construction device for box culvert concrete, belonging to the field of box culvert construction technology. It includes an acrylic sheet for box culvert concrete, a steel formwork set under the acrylic sheet, and a vertical plate set under the steel formwork. A transverse telescopic support frame is formed by a series of parallel first connecting rods and parallel second connecting rods connected in a crisscross pattern. A guide rod is hinged to the lower end of the first connecting rod near the vertical plate, and the guide rod is slidably positioned within a vertical groove on the vertical plate. The upper end of the first connecting rod is hinged to the upper end of another set of second connecting rods. The upper end of the second connecting rod near the vertical plate is hinged to the vertical plate, and the lower end of the second connecting rod is hinged to the lower end of another set of first connecting rods. The middle of the same set of first and second connecting rods is hinged. The upper ends of both the first and second connecting rods are simultaneously hinged to a sliding column. This invention's device is convenient for construction and can improve the appearance quality of box culvert concrete.

Description

Technical Field

[0001] This invention belongs to the field of box culvert construction technology, specifically relating to an acrylic formwork construction device for box culvert concrete. Background Technology

[0002] Taking the construction of concrete box culverts for highways as an example, the control of the appearance of the concrete is extremely strict during the construction process. Current technology often uses grinding the formwork followed by applying a release agent to ensure the overall appearance quality of the concrete. However, due to environmental or human factors, the formwork grinding may not be thorough enough, resulting in uneven application of the release agent and the concrete appearance falling far short of requirements. Furthermore, while the existing concrete control measures can control some of the concrete appearance quality, the use of release agents not only complicates the construction process but also poses certain health risks. Each formwork grinding process causes environmental pollution and energy consumption, and the operation procedures are relatively complex, highly susceptible to human and environmental influences, causing significant inconvenience to the construction. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an acrylic formwork construction device for box culvert concrete, which has the characteristics of convenient construction and can improve the appearance construction quality of box culvert concrete.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention discloses an acrylic formwork construction device for box culvert concrete, comprising an acrylic sheet for the box culvert concrete and a steel formwork disposed on the underside of the acrylic sheet. The underside of the steel formwork is supported by a front support frame and a rear support frame. The front and rear support frames are detachably connected to transverse rails. Sliding grooves are formed within the transverse rails, and sliding columns are slidably disposed within the grooves. The sliding columns extend longitudinally, with their two ends slidably disposed within the grooves on the two transverse rails. A passive roller is coaxially disposed on the sliding column, and the passive roller simultaneously supports the underside of the steel formwork. A vertical plate is provided, and a transverse telescopic support frame is installed on the vertical plate along the horizontal direction. The transverse telescopic support frame is composed of several parallel first links and parallel second links connected in a crisscross manner. The lower end of the first link near the vertical plate is hinged to a guide rod, which is slidably set in a vertical groove opened in the vertical plate. The upper end of the first link is hinged to the upper end of another set of second links. The upper end of the second link near the vertical plate is hinged to the vertical plate, and the lower end of the second link is hinged to the lower end of another set of first links. The middle part of the same set of first and second links is hinged. The upper ends of the first and second links are simultaneously hinged to a sliding column.

[0006] Furthermore, a flipping frame is hinged to each end of the transverse track. The flipping frame is locked to the transverse track by a locking member. The upper end of the flipping frame is hinged to a first telescopic device. The output end of the first telescopic device is hinged to the drive roller. The first telescopic device is also connected to the flipping frame through an elastic tensioning device.

[0007] Furthermore, the two sets of active rollers corresponding to the two sets of flipping frames are arranged crosswise in the longitudinal direction.

[0008] Furthermore, the guide rod is disposed within the transverse frame, which is connected to the output end of the second telescopic device, which is fixed to the vertical plate.

[0009] Furthermore, the lower end of the vertical plate is fixed to the mobile platform, and the lower end of the mobile platform is connected to casters.

[0010] Furthermore, the front support frame and the rear support frame have the same structure. The front support frame includes an adjustable top support, vertical uprights, horizontal members, and vertical scissor braces. The vertical uprights are evenly spaced along the horizontal direction, and the horizontal members are evenly spaced along the vertical direction. The vertical scissor braces provide support from bottom to top. The vertical scissor braces, vertical uprights, and horizontal members are connected in pairs by fasteners. The upper end of the vertical uprights is connected to the adjustable top support.

[0011] Furthermore, a support pad is also provided between the adjusting top support and the steel template.

[0012] Furthermore, a sweeping rod is connected to the lower end of the vertical pole.

[0013] Furthermore, the lower end of the vertical pole is connected to a support foot.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention discloses an acrylic formwork construction device for box culvert concrete. By using acrylic panels instead of traditional formwork to contact the cast-in-place concrete, the smooth and flat surface of the acrylic panels achieves a mirror-like finish on the concrete. During on-site construction, there is no need to grind or apply release agents after each formwork installation, thus avoiding environmental pollution, reducing energy consumption, protecting the health of construction workers, and eliminating misalignment caused by formwork seams. Simultaneously, the acrylic panels are supported by steel formwork, ensuring sufficient strength, rigidity, and stability of the formwork during concrete construction, guaranteeing the construction effect.

[0016] In the device disclosed in this invention, a passive roller is set up to support the bottom surface of the steel template, ensuring that there are no gaps or voids between the steel template and the acrylic plate, thereby further ensuring the appearance construction quality of the box culvert concrete.

[0017] The device disclosed in this invention features a telescopic lateral support frame. After support is completed, the passive roller can be retracted laterally, facilitating disassembly and reducing space constraints in the box culvert. Furthermore, the support area can be adjusted according to the telescopic range, making it suitable for supporting templates of different sizes and saving costs.

[0018] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0019] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0020] Figure 1 This is a schematic diagram of the construction device of the present invention;

[0021] Figure 2 This is a front view of the construction device of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the construction device;

[0023] Figure 4 for Figure 3 Enlarged view at point A;

[0024] Figure 5 This is a structural schematic diagram of the front support frame;

[0025] Figure 6 This is a schematic diagram of the support structure for the construction equipment.

[0026] The following components are labeled in the attached diagram: 1. Box culvert; 2. Acrylic plate; 3. Steel formwork; 4. Front support frame; 5. Rear support frame; 7. Transverse track; 8. Slide chute; 9. Slide column; 10. Passive roller; 11. Vertical plate; 12. Transverse telescopic support frame; 13. First connecting rod; 14. Second connecting rod; 15. Guide rod; 16. Vertical groove; 17. Tilting frame; 18. First telescopic device; 19. Active roller; 20. Elastic tensioning device; 21. Transverse frame; 22. Second telescopic device; 23. Moving platform; 24. Casters; 25. Adjustable top support; 26. Vertical upright; 27. Transverse member; 28. Vertical scissor brace; 29. ​​Support pad; 30. Sweeping rod; 31. Support foot piece. Detailed Implementation

[0027] like Figures 1-6As shown, the present invention discloses an acrylic formwork construction device for box culvert concrete, comprising an acrylic plate 2 for the box culvert 1 concrete and a steel formwork 3 set on the underside of the acrylic plate 2. Both the acrylic plate 2 and the steel formwork 3 are rectangular and are used to provide support for the box culvert 1 concrete during pouring. Due to the smooth surface of the acrylic plate 2, combined with the supporting effect of the steel formwork 3, a mirror-like effect is achieved on the concrete appearance. During on-site construction, it is not necessary to grind and apply release agent to the formwork each time it is installed, thus avoiding environmental pollution and eliminating the appearance misalignment caused by the formwork joints.

[0028] Specifically, the lower side of the steel formwork 3 is supported by both a front support frame 4 and a rear support frame 5. The front support frame 4 and the rear support frame 5 support the front and rear sides of the steel formwork 3, respectively. Simultaneously, transverse rails 7 are detachably connected to both the front support frame 4 and the rear support frame 5. The transverse rails 7 extend along the length of the steel formwork 3, and grooves 8 are formed within the transverse rails 7. Sliding columns 9 are slidably installed within the grooves 8, extending longitudinally. Figure 1 It can be seen that the extension direction of the sliding column 9 is perpendicular to the transverse track 7.

[0029] The sliding column 9 has two ends that are slidably set in the grooves 8 opened on the two transverse tracks 7. A passive roller 10 is coaxially set on the sliding column 9. The passive roller 10 can rotate around the axis of the sliding column 9. The passive roller 10 is also used to support the lower side of the steel formwork 3, thereby improving the overall support effect of the steel formwork 3 and reducing the occurrence of hollow phenomena.

[0030] Furthermore, the steel formwork 3 disclosed in this invention is provided with a vertical plate 11 on its lower side. The vertical plate 11 is installed on the lower side of the steel formwork 3 or on the surface of the precast concrete. A transverse telescopic support frame 12 is installed on the vertical plate 11 along the transverse direction. The transverse telescopic support frame 12 can extend along the transverse direction to change its length.

[0031] Specifically, the transverse telescopic support frame 12 is composed of several parallel first connecting rods 13 and parallel second connecting rods 14 connected in a crisscross pattern. That is, the first connecting rods 13 in each group are parallel to each other, and the second connecting rods 14 in each group are also parallel to each other. The first connecting rods 13 and second connecting rods 14 in the same group cross each other in the middle. The lower end of the first connecting rod 13 near the vertical plate 11 is hinged to a guide rod 15, which is slidably disposed in a vertical groove 16 opened on the vertical plate 11. The upper end of the first connecting rod 13 is hinged to the upper end of another group of second connecting rods 14. The upper end of the second connecting rod 14 near the vertical plate 11 is hinged to the vertical plate 11, and the lower end of the second connecting rod 14 is hinged to the lower end of another group of first connecting rods 13. The first connecting rods 13 and second connecting rods 14 in the same group are hinged in the middle. The upper ends of the first connecting rods 13 and second connecting rods 14 are simultaneously hinged to the sliding column 9.

[0032] In use, when the guide rod 15 rises along the slide 8, it causes the first connecting rod 13 to deflect, bringing the positions of the first connecting rod 13 and the second connecting rod 14 closer together vertically. At this time, the hinge points at each upper end move away from each other, thus unfolding the passive roller 10. Similarly, when the guide rod 15 descends along the slide 8, it causes the first connecting rod 13 to deflect, bringing the positions of the first connecting rod 13 and the second connecting rod 14 closer together horizontally. At this time, the hinge points at each upper end move closer together, thus retracting the passive roller 10. This allows for easy disassembly of the device, reducing space constraints in the box culvert 1. Furthermore, the support area can be adjusted according to the range of extension and retraction, making it suitable for supporting templates of different sizes and saving costs.

[0033] In this embodiment, a flipping frame 17 is hinged to each end of the transverse track 7. The flipping frame 17 can be flipped over for storage. After the active roller 19 is used, the flipping frame 17 is flipped outward to expose the upper surface of the acrylic plate 2, facilitating the subsequent pouring of concrete for the box culvert 1. The flipping frame 17 is locked to the transverse track 7 by a locking device, providing stability for the first telescopic device 18 during its extension and retraction process. The upper end of the flipping frame 17 is hinged to the first telescopic device 18, which is a hydraulic cylinder. The output end of the first telescopic device 18 is hinged to the active roller 19. The first telescopic device 18 is also connected to the flipping frame 17 through an elastic tension device 20. The elastic tension device 20 provides an elastic preload to the first telescopic device 18, providing downward pressing separation for the rolling action of the active roller 19.

[0034] In this embodiment of the invention, by simultaneously setting an active roller 19 and a passive roller 10, the active roller 19 can expel the air between the acrylic plate 2 and the steel template 3 in the transverse direction, reducing the occurrence of voids and improving the quality of construction.

[0035] In this embodiment, the two sets of active rollers 19 corresponding to the two sets of flipping frame 17 are arranged in a longitudinal cross pattern. This ensures the maximum rolling area while avoiding interference between the two sets of active rollers 19, thereby improving the uniformity of rolling and exhaust.

[0036] In this embodiment, each support frame has two sets of guide rods 15. The two sets of guide rods 15 are simultaneously set in a horizontal frame 21. The horizontal frame 21 is connected to the output end of the second telescopic device 22. The second telescopic device 22 is fixed on the vertical plate 11. The second telescopic device 22 can be a hydraulic cylinder. The guide can be raised or lowered by telescopic control, thereby realizing the expansion or contraction of the horizontal telescopic support frame 12, which is more convenient to control.

[0037] In this embodiment, the lower end of the vertical plate 11 is fixed to the mobile platform 23, and the lower end of the mobile platform 23 is connected to the universal wheel 24. By moving the mobile platform 23, the position of the vertical plate 11 and the horizontal telescopic support frame 12 can be adjusted, which makes it easier to adjust the specific support position of the steel template 3 and makes it more convenient to use.

[0038] In this embodiment, the front support frame 4 and the rear support frame 5 have the same structure. The front support frame 4 includes an adjustable top support 25, vertical uprights 26, horizontal members 27, and vertical scissor braces 28. The vertical uprights 26 are evenly spaced along the horizontal direction, and the horizontal members 27 are evenly spaced along the vertical direction. The vertical scissor braces 28 provide support from bottom to top. The vertical scissor braces 28, vertical uprights 26, and horizontal members 27 are connected in pairs by fasteners. The upper end of the vertical upright 26 is connected to the adjustable top support 25. The adjustable top support 25 is threadedly connected to the vertical upright 26. By rotating the adjustable top support 25, the support height can be adjusted to adapt to site requirements, resulting in more stable support. The detachable design allows for convenient reuse of the device.

[0039] In this embodiment, a support pad 29 is also provided between the adjusting top support 25 and the steel formwork 3. The support pad 29 is made of square wood, which can reduce the damage to the support of the steel formwork 3.

[0040] In this embodiment, a sweeping rod 30 is connected to the lower end of the vertical pole 26 to increase the support strength of the front support frame 4 and the rear support frame 5. A support foot piece 31 is connected to the lower end of the vertical pole 26 to improve the support stability of the vertical pole 26.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An acrylic formwork construction device for box culvert concrete, characterized in that: The system includes an acrylic sheet for box culvert concrete and a steel formwork mounted on the underside of the acrylic sheet. The underside of the steel formwork is supported by a front support frame and a rear support frame. The front and rear support frames are detachably connected to transverse rails. Each transverse rail has a groove, and a sliding column is slidably mounted within the groove. The sliding column extends longitudinally, with its two ends slidably positioned within the grooves on the two transverse rails. A passive roller is coaxially mounted on the sliding column, which also supports the underside of the steel formwork. A vertical plate is also mounted on the underside of the steel formwork. A transverse telescopic support frame is mounted on the vertical plate along the transverse direction. The transverse telescopic support frame is composed of several parallel first connecting rods and parallel second connecting rods connected in a crisscross pattern. A guide rod is hinged to the lower end of the first connecting rod closest to the vertical plate, and the guide rod is slidably mounted on... Within the vertical slots on the vertical plate, the upper end of the first connecting rod is hinged to the upper end of another set of second connecting rods. The upper end of the second connecting rod near the vertical plate is hinged to the vertical plate, and the lower end of the second connecting rod is hinged to the lower end of another set of first connecting rods. The middle of the same set of first and second connecting rods is hinged, and the upper ends of the first and second connecting rods are simultaneously hinged to the sliding column. A flipping frame is hinged to each end of the transverse track. The flipping frame is locked to the transverse track by a locking device. The upper end of the flipping frame is hinged to a first telescopic device. The output end of the first telescopic device is hinged to the drive roller. The first telescopic device is also connected to the flipping frame via an elastic tension device. Two sets of drive rollers corresponding to the two sets of flipping frames are arranged longitudinally in a cross pattern. The guide rod is set within the transverse frame, which is connected to the output end of the second telescopic device, which is fixed to the vertical plate.

2. The acrylic formwork construction device for box culvert concrete according to claim 1, characterized in that: The lower end of the vertical plate is fixed to the mobile platform, and the lower end of the mobile platform is connected to casters.

3. An acrylic formwork construction device for box culvert concrete according to any one of claims 1-2, characterized in that: The front support frame and the rear support frame have the same structure. The front support frame includes an adjustable top support, vertical uprights, horizontal members, and vertical scissor braces. The vertical uprights are evenly spaced along the horizontal direction, and the horizontal members are evenly spaced along the vertical direction. The vertical scissor braces provide support from bottom to top. The vertical scissor braces, vertical uprights, and horizontal members are connected in pairs by fasteners. The upper end of the vertical uprights is connected to the adjustable top support.

4. The acrylic formwork construction device for box culvert concrete according to claim 3, characterized in that: A support pad is also provided between the adjustable top support and the steel formwork.

5. The acrylic formwork construction device for box culvert concrete according to claim 4, characterized in that: The lower end of the vertical pole is connected to a sweeping rod.

6. The acrylic formwork construction device for box culvert concrete according to claim 3, characterized in that: The lower end of the vertical pole is connected to a support foot.

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