A combined formwork structure for construction

Abstract

The present invention relates to a combined formwork structure for construction, which comprises a plurality of formwork units, and adjacent formwork units are connected by a plurality of locking members; wherein, a water stop sheet is arranged on the outer end surface of the formwork unit. For the combined formwork structure for construction provided by the present invention, by arranging a water stop sheet on the outer end surface of the formwork unit, when adjacent formwork units are connected by locking members, the splicing joint between adjacent formwork units can be blocked by the water stop sheet, thereby avoiding the occurrence of slurry leakage at the splicing joint and improving the visual quality of the cast concrete. After the splicing joint between formwork units is blocked by the water stop sheet without slurry leakage, the vibration time and frequency of the concrete can be increased to improve the vibration compactness of the concrete, avoid appearance defects such as air bubble holes on the concrete surface, and further improve the surface visual quality of the concrete structure.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and more specifically, to a combined formwork structure for construction. Background Art

[0002] Combined formworks mostly use materials such as profiled steel and aluminum. Customized formworks are produced through processing and standardization. With the development of technology, plastics are also increasingly applied to the application of building formwork technology. Combined aluminum alloy formworks and combined ribbed plastic formworks are increasingly applied to engineering construction due to their characteristics of smooth surface, easy demoulding, light weight, good corrosion resistance, high structural processing accuracy, high formwork turnover times, and recyclability. The use of combined formworks improves construction efficiency and reduces the labor intensity of workers. The concrete poured using this formwork technology has good quality, accurate dimensions after forming, neat edges and corners, smooth surface, which can save decoration labor, and the texture of the concrete after forming is natural with good finishing effect. Especially for the ribbed plastic formworks used, this formwork product can significantly improve the mechanical properties of the base material while maintaining the lightness of the plastic material, meeting the requirements of building construction. Combined formworks are clean and tidy during the construction process and do not generate excess construction waste (such as wood chips, iron nails, iron wires, etc.). After the formworks are discarded, they can be recycled, reducing environmental pollution caused by waste.

[0003] However, after the combined formworks are used and turned over many times, the joints of the formworks are prone to looseness or misalignment, resulting in leakage of slurry at the joints of the formworks, which affects the visual quality of the concrete. In this case, in order to avoid the phenomenon of slurry leakage, workers will reduce the number of concrete vibration times and vibration time compared with the conventional situation. Reducing the vibration times and vibration time will cause the concrete to be prone to bleeding during the hardening process. After the bleeding, the water evaporates quickly, resulting in bubble holes on the surface of the concrete, which also affects the visual quality of the concrete structure surface. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a combined formwork structure for construction, aiming to solve the problems existing in the prior art.

[0005] The present invention provides a combined formwork structure for construction, which includes a plurality of formwork units, and adjacent formwork units are connected by a plurality of locking members; wherein,

[0006] A water stop sheet is provided on the outer end surface of the formwork unit.

[0007] Preferably, the water stop sheet is a water swelling water stop sheet.

[0008] Preferably, the water stop sheet is adhered to the outer end surface of the formwork unit by an adhesive.

[0009] Preferably, the template unit includes a template panel and a template frame. The template frame is provided at the edge of the template panel, and the outer side surface of the template frame is flush with the edge line of the template panel;

[0010] The water stop is provided on the outer side surface of the template frame.

[0011] Preferably, the template unit further includes a plurality of rib plates. The plurality of rib plates and the template frame are both provided on the same side of the template panel, and the rib plates are connected to the template frame.

[0012] Preferably, the template panel is rectangular, and the template frame includes a first long frame, a first short frame, a second long frame, and a second short frame that are sequentially perpendicular to each other;

[0013] The first long frame of one of the template units is connected to the second long frame of the adjacent template unit through a plurality of the locking members; the first short frame of one of the template units is connected to the second short frame of the adjacent template unit through a plurality of the locking members.

[0014] Preferably, a plurality of threaded through holes are respectively formed on the first long frame and the first short frame, and a plurality of circular through holes are respectively formed on the second long frame and the second short frame. The plurality of threaded through holes on the first long frame respectively correspond to the plurality of circular through holes on the second long frame one by one, and the plurality of threaded through holes on the first short frame respectively correspond to the plurality of circular through holes on the second short frame one by one;

[0015] The locking member includes a connecting rod and a retaining rod. The retaining rod is provided at one end of the connecting rod, and an external thread matching the threaded through hole is provided on the connecting rod;

[0016] Wherein, when the locking member connects two adjacent template units, the connecting rod passes through the circular through hole of one of the template units and is screwed into the corresponding threaded through hole on the adjacent template unit, and the retaining rod abuts against the inner side surface of the template frame.

[0017] Preferably, a pin hole is further formed at one end of the connecting rod away from the retaining rod, and the pin hole is used for inserting an open pin.

[0018] Preferably, a handle is provided on the retaining rod, and the handle is perpendicular to the retaining rod.

[0019] Preferably, a horizontally penetrating sliding hole is formed on the retaining rod. The axial direction of the sliding hole is perpendicular to the axial direction of the connecting rod. The handle is slidably arranged in the sliding hole, and anti-detachment protrusions are provided at both ends of the handle.

[0020] The combined formwork structure for construction provided by the present invention is provided with a water stop sheet on the outer end surface of the formwork unit. When adjacent formwork units are connected by locking members, the splicing seam between adjacent formwork units can be blocked by the water stop sheet, thereby avoiding the occurrence of slurry leakage at the splicing seam and improving the visual quality of the concrete after pouring. After the splicing seam between the formwork units is sealed by the water stop sheet and does not leak slurry, the vibration time and frequency of the concrete can be increased to improve the vibration compactness of the concrete, avoid appearance defects such as air holes on the concrete surface, and further improve the surface visual quality of the concrete structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become more apparent.

[0022] Figure 1 FIG. shows a schematic structural diagram of a combined formwork structure for construction according to an embodiment of the present invention.

[0023] Figure 2 FIG. shows a schematic structural diagram of a formwork unit in the combined formwork structure for construction according to an embodiment of the present invention.

[0024] Figure 3 FIG. shows a schematic structural diagram of a locking member in the combined formwork structure for construction according to an embodiment of the present invention.

[0025] Figure 4 is Figure 1 a cross-sectional view taken along line A-A in

[0026] In the figure: 1, formwork unit; 11, formwork panel; 12, formwork frame; 121, first long frame; 122, first short frame; 123, second long frame; 124, second short frame; 13, rib plate; 14, threaded through hole; 15, round through hole; 2, locking member; 21, connecting rod; 211, external thread; 212, pin hole; 22, stop bar; 221, sliding hole; 23, handle; 231, anti-disengagement protrusion; 3, water stop sheet; 4, split pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The various embodiments of the present invention will be described in more detail below with reference to the drawings. In each of the drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale.

[0028] The present invention provides a combined formwork structure for construction, see Figure 1 , the combined formwork structure for construction includes a plurality of formwork units 1, and adjacent formwork units 1 are connected by a plurality of locking members 2. Among them, a water stop sheet 3 is provided on the outer end surface of the formwork unit 1.

[0029] Specifically, the water stop piece 3 is made of a material with certain elasticity and has certain compressibility. When the locking piece 2 is used to connect two adjacent formwork units 1, the water stop piece 3 can be compressed to tightly seal the splicing joint between the formwork units, so that when pouring concrete, the concrete will not leak from the splicing joint between the formwork units and cause slurry leakage.

[0030] In this embodiment, the water stop piece 3 is a water-swelling water stop piece. When pouring concrete, the water-swelling water stop piece provided on the outer end face of the formwork unit 1 will expand after encountering the moisture in the concrete, squeezing and densifying the space between the two formwork units 1, making the splicing joint more tight and preventing slurry leakage. In this embodiment, the water stop piece 3 is adhered to the outer end face of the formwork unit 1 by an adhesive. When the water stop piece 3 is damaged after long-term use, the damaged water stop piece 3 can be conveniently removed and replaced.

[0031] See Figure 2 , the formwork unit 1 includes a formwork panel 11 and a formwork frame 12. The formwork frame 12 is provided at the edge of the formwork panel 11, and the outer side surface of the formwork frame 12 is flush with the side line of the formwork panel 11; the water stop piece 3 is provided on the outer side surface of the formwork frame 12. The formwork frame 12 is arranged at the edge of the formwork panel 11, which can enhance the strength of the formwork unit 1 and is also used for the connection between formwork units 1. When connecting two adjacent formwork units 1, the locking piece 2 is connected to the formwork frames 12 of the two adjacent formwork units 1. The width of the formwork frame 12 also facilitates the setting of the water stop piece 3, so that when connecting two formwork units 1, the water stop piece 3 can better fill the splicing joint between the two formwork units and prevent slurry leakage at the splicing joint.

[0032] In order to further improve the strength and stiffness of the formwork unit 1, the formwork unit 1 further includes a plurality of rib plates 13. The plurality of rib plates 13 and the formwork frame 12 are both provided on the same side of the formwork panel 11, and the rib plates 13 are connected to the formwork frame 12. Specifically, a plurality of rib plates 13 are arranged inside the formwork frame 12, including a plurality of horizontal and vertical rib plates 13, which also play a supporting role in the middle position of the formwork panel 11, ensuring that the side of the formwork panel 11 for pouring concrete can maintain a certain strength and stiffness and ensuring that the pouring surface of the concrete is flat. In specific implementation, the formwork unit 1 is made of plastic material, and the formwork panel 11, the formwork frame 12 and the rib plates 13 can be integrally injection-molded.

[0033] In this embodiment, the template unit 1 is rectangular, and the template frame 12 includes a first long frame 121, a first short frame 122, a second long frame 123, and a second short frame 124 that are vertically arranged in sequence; the first long frame 121 of one template unit 1 is connected to the second long frame 123 of an adjacent template unit 1 through a plurality of locking members 2; the first short frame 122 of one template unit 1 is connected to the second short frame 124 of an adjacent template unit 1 through a plurality of locking members 2.

[0034] See Figure 1 , Figure 2 and Figure 4 , in this embodiment, a plurality of threaded through holes 14 are respectively formed in the first long frame 121 and the first short frame 122, and a plurality of circular through holes 15 are respectively formed in the second long frame 123 and the second short frame 124. The plurality of threaded through holes 14 on the first long frame 121 respectively correspond to the plurality of circular through holes 15 on the second long frame 123 one by one, and the plurality of threaded through holes 14 on the first short frame 122 respectively correspond to the plurality of circular through holes 15 on the second short frame 124 one by one; the locking member 2 includes a connecting rod 21 and a retaining rod 22. The retaining rod 22 is arranged at one end of the connecting rod 21, and an external thread 211 matching the threaded through hole 14 is provided on the connecting rod 21; wherein, when the locking member 2 connects two adjacent template units 1, the connecting rod 21 passes through the circular through hole 15 of one template unit 1 and is screwed with the corresponding threaded through hole 14 on the adjacent template unit 1, and the retaining rod 22 abuts against the inner side surface of the template frame 12.

[0035] Specifically, the diameter of the circular through hole 15 is slightly larger than the diameter of the connecting rod 21 to facilitate the connection of the connecting rod 21 passing through the circular through hole 15 and the threaded through hole 14. The external thread 211 on the connecting rod 21 is arranged at one end of the connecting rod 21 away from the retaining rod 22, or the entire connecting rod 21 is provided with the external thread 211; the cross-sectional dimension of the retaining rod 22 is larger than the cross-sectional dimension of the circular through hole 15, so that the retaining rod 22 can abut against the template frame 12 after the connecting rod 21 is connected to the threaded through hole 14 to a certain length, so that the template frames 12 of the two template units 1 can be firmly connected, that is, the locking member 2 is equivalent to the function of a connecting bolt. By screwing the locking member 2, the gap between two adjacent template units 1 can be reduced, the water stop 3 at the splicing joint of the two adjacent template units 1 is pressed tightly, and the problem of too large a joint between the template units is eliminated.

[0036] The length of the connecting rod 21 is greater than the sum of the thicknesses of the two formwork side frames 12 connected by the locking member 2. After the locking member 2 connects two adjacent formwork units 1, the end of the connecting rod 21 away from the stop rod 22 passes through the threaded through-hole 14. A pin hole 212 is also formed at the end of the connecting rod 21 away from the stop rod 22, and the pin hole 212 is used for inserting a split pin 4. After the locking member 2 connects two adjacent formwork units 1, by inserting the split pin 4 into the pin hole 212 at the front end of the connecting rod 21, it is possible to prevent the loosening and dropping of the locking member 2 caused by vibration during actual use.

[0037] To facilitate the connection between the locking member 2 and the formwork unit 1, a handle 23 is provided on the stop rod 22 of the locking member 2, and the handle 23 is arranged perpendicular to the stop rod 22. By providing the handle 23, when using the locking member 2 to connect adjacent formwork units 1, a torsional moment can be applied to the locking member 2 through the handle 23, so that the external thread 211 on the connecting rod 21 is connected to the threaded through-hole 14, and then the two formwork units 1 are tightly connected together. The connection between the locking member 2 and the formwork unit 1 does not require the use of a wrench or other screwing tools, and the locking member 2 can be connected by hand at the construction site, which is convenient for construction.

[0038] See Figure 3 and Figure 4 In this embodiment, a laterally penetrating sliding hole 221 is formed in the stop rod 22. The axial direction of the sliding hole 221 is perpendicular to the axial direction of the connecting rod 21. The handle 23 is slidably arranged in the sliding hole 221, and anti-slip protrusions 231 are provided at both ends of the handle 23. Since the width of the formwork side frame 12 is limited, if the handle 23 on the locking member 2 is set as a fixed structure, the handle 23 will interfere with the formwork panel 11 when the locking member 2 is screwed, and further rotation cannot be performed. In this embodiment, by forming the sliding hole 221 in the stop rod 22 and slidably arranging the handle 23 in the sliding hole 221, the first end of the handle 23 can be arranged in the sliding hole 221, and the second end of the handle 23 can be pulled to rotate the locking member 2; when the second end of the handle 23 rotates to the position of the formwork panel 11 and cannot continue to rotate, the second end of the handle 23 can be slid into the sliding hole 221, and then the first end of the handle 23 can be pulled to rotate the locking member 2, and so on to screw the locking member 2 to complete the connection between adjacent formwork units 1. The anti-slip protrusions 231 at both ends of the handle 23 are circular plate-like structures with a diameter directly larger than that of the handle 23, and the anti-slip protrusions 231 can prevent the handle 23 from slipping out of the sliding hole 221.

[0039] The composite formwork structure for construction provided by the present invention has a formwork unit that can be used cyclically. By arranging a water stop sheet on the outer end surface of the formwork unit, when adjacent formwork units are connected by a locking member, the joints between adjacent formwork units can be filled and blocked by the water stop sheet, thereby avoiding leakage of slurry at the joints and improving the visual quality of concrete after pouring. After the joints between the formwork units are sealed and blocked by the water stop sheet to prevent leakage of slurry, the vibration time and number of times of the concrete can be increased to improve the vibration density of the concrete, avoid appearance defects such as air bubbles on the concrete surface, and further improve the surface visual quality of the concrete structure.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0041] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A combined formwork structure for construction, characterized in that, it includes a plurality of formwork units, and adjacent formwork units are connected by a plurality of locking members; wherein, a water stop sheet is provided on the outer end surface of the formwork unit; the formwork unit includes a formwork panel and a formwork frame, the formwork frame is arranged at the edge of the formwork panel, and the outer side surface of the formwork frame is flush with the edge line of the formwork panel; the water stop sheet is arranged on the outer side surface of the formwork frame; the formwork panel is rectangular, and the formwork frame includes a first long frame, a first short frame, a second long frame and a second short frame that are vertically arranged in sequence; the first long frame of one formwork unit is connected to the second long frame of the adjacent formwork unit by a plurality of the locking members; the first short frame of one formwork unit is connected to the second short frame of the adjacent formwork unit by a plurality of the locking members; a plurality of threaded through holes are respectively formed in the first long frame and the first short frame, a plurality of round through holes are respectively formed in the second long frame and the second short frame, the plurality of threaded through holes on the first long frame respectively correspond to the plurality of round through holes on the second long frame one by one, and the plurality of threaded through holes on the first short frame respectively correspond to the plurality of round through holes on the second short frame one by one; the locking member includes a connecting rod and a retaining rod, the retaining rod is arranged at one end of the connecting rod, and an external thread matching the threaded through hole is provided on the connecting rod; wherein, when the locking member connects two adjacent formwork units, the connecting rod passes through the round through hole of one formwork unit and is screwed with the corresponding threaded through hole on the adjacent formwork unit, and the retaining rod abuts against the inner side surface of the formwork frame; a pin hole is further formed at one end of the connecting rod away from the retaining rod, and the pin hole is used for inserting a split pin; a handle is provided on the retaining rod, and the handle is perpendicular to the retaining rod; the formwork unit further includes a plurality of rib plates, the plurality of rib plates and the formwork frame are both arranged on the same side of the formwork panel, and the rib plates are connected to the formwork frame; a horizontally penetrating sliding hole is formed in the retaining rod, the axial direction of the sliding hole is perpendicular to the axial direction of the connecting rod, the handle is slidably arranged in the sliding hole, and anti - detachment protrusions are provided at both ends of the handle.

2. The combined formwork structure for construction according to claim 1, characterized in that, the water stop sheet is a water - swelling water stop sheet.

3. The combined formwork structure for construction according to claim 1, characterized in that, the water stop sheet is adhered to the outer end surface of the formwork unit by an adhesive.

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