A hinged column form

Abstract

The utility model discloses a hinged column formwork belongs to the technical field of construction. The column formwork includes a plurality of formwork units that are hingedly connected in sequence and form a closed structure. Each formwork unit includes a formwork frame, a panel, and an adjustable back brace hingedly connected to the formwork frame. The adjacent formwork units are hingedly connected through the hinged limiting seat and the adjusting hole on the back brace rod. By switching different adjusting holes, the inner circumferential dimension of the closed column formwork can be accurately adjusted to adapt to column bodies of different cross sections. In the closed state, the structure forms a natural geometric invariant system using a quadrilateral loop to ensure the stability of the formwork. In addition, the hinged limiting seat is provided with a positioning hole for assisting in rigid limiting and locking of the formwork sequence in the formwork disassembly and unfolding state, facilitating overall hoisting. The utility model has the advantages of simple structure, flexible adjustment, high construction efficiency, and convenient turnover and storage.

Description

Technical Field

[0001] This utility model belongs to the field of building construction formwork technology, specifically relating to a hinged column formwork. Background Technology

[0002] In building construction, cast-in-place concrete columns are crucial load-bearing components in frame structures, and their construction efficiency and forming quality directly affect project progress and construction safety. Existing column formwork often employs a modular structure, requiring piece-by-piece assembly and disassembly during construction. This not only involves cumbersome steps and high labor intensity but also necessitates frequent high-altitude operations and multiple hoisting operations, posing significant safety risks.

[0003] In addition, existing formwork often requires changing the formwork specifications or custom processing when adapting to the construction of columns with different cross-sectional dimensions, resulting in poor versatility and low formwork turnover rate. Formwork is also prone to deformation and damage during disassembly and assembly, increasing construction costs and material waste, which is not conducive to the development of green construction and building industrialization.

[0004] Therefore, it is necessary to provide a column formwork structure that is structurally reasonable, easy to assemble, can be assembled and hoisted as a whole, and can be adapted to the construction of columns of different sizes, so as to improve construction efficiency and safety and reduce formwork turnover loss. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a hinged column formwork, which aims to solve the problems of low construction efficiency, high safety risks, and large turnover losses of the existing column formwork construction that relies on the assembly of split formwork.

[0006] To solve the above-mentioned technical problems, this utility model provides a hinged column formwork, which includes multiple formwork units.

[0007] Each template unit includes a template frame, a panel fixed inside the template frame, and an adjustable back support hinged to the template frame.

[0008] The template frame includes a vertical frame, a horizontal frame, and a back rib arranged horizontally along the column height direction. The side of the vertical frame is provided with a hinged limiting seat, and the hinged limiting seat is provided with a connecting hole.

[0009] The adjustable back support includes multiple parallel back support rods, each with multiple adjustment holes along its length. The back support is detachably connected to the adjustable back support in its unfolded state via a support diagonal rod.

[0010] In adjacent template units, the hinge limit seat of one template unit is hinged to the adjustable back support of another template unit through a connecting pin passing through the adjustment hole and the connection hole. Multiple template units are hinged in sequence and enclosed to form a closed column mold structure.

[0011] Preferably, the hinged limiting seat has two mutually parallel limiting surfaces, and a space is formed between the two limiting surfaces to accommodate the insertion of the back support rod, so as to ensure the stability of the hinged connection between the template units.

[0012] Preferably, the position of the hinged limiting seat corresponds to the position of the back rib.

[0013] Preferably, the back rib is a U-shaped profile with its opening facing away from the panel, and both the vertical and horizontal borders are rectangular profiles.

[0014] Preferably, the back rib end is provided with a back rib hinge hole, and the end of the back support rod is provided with a corresponding back support hinge hole, and the two are hingedly connected by a connecting pin.

[0015] Preferably, the back support rod has a U-shaped cross-section structure, and the opening width of the U-shaped cross-section structure is greater than the opening width of the back rib, so that the back support rod can be fastened to the back rib in the stored state.

[0016] Preferably, the end of the back support rod away from its hinge hole is fixedly connected by a linkage reinforcing beam, so that multiple back support rods form a structure that rotates synchronously as a whole.

[0017] Preferably, the adjustment holes are evenly arranged along the length of the back support rod, and the connecting pins can be respectively inserted into the connecting holes of the hinge limit seat and different adjustment holes. By selecting different adjustment holes, the relative positions between adjacent template units are shifted, thereby changing the inner size of the closed column mold structure formed by multiple template units to adapt to columns with different cross-sectional sizes.

[0018] Preferably, the back rib is provided with a first storage hole, and the back support rod is provided with a second storage hole; when the adjustable back support is in the closed storage state, the groove of the back support rod is engaged with the outside of the back rib, and the support rod is stored in the profile cavity formed by the back rib and the back support rod. The connecting pin passes through the first storage hole, the second storage hole and the connecting holes at both ends of the support rod, and locks the back rib, the back support rod and the support rod simultaneously.

[0019] Preferably, the back rib is further provided with a first support hole, and the back support rod is provided with a second support hole; when the adjustable back support is in the unfolded state, the two ends of the support rod are respectively connected to the first support hole and the second support hole to lock the support angle of the back support rod relative to the template frame.

[0020] Preferably, the hinged limiting seat is also provided with a positioning hole. When the connecting pin is inserted into the positioning hole and forms an abutment with the side of the back support rod of the adjacent template unit, it limits the relative rotation between the template units. When the connecting pin is removed from the positioning hole, the template unit can rotate relatively freely while maintaining the hinged connection, so as to realize the controlled unfolding and demolding of the column mold structure.

[0021] Preferably, the horizontal frame includes an upper frame at the top and a lower frame at the bottom. Both the upper and lower frames are provided with multiple frame connection holes for vertical connection of adjacent template units or for installation of lifting lugs for hoisting.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects: 1. By using hinged connections between template units, the column template can be assembled and disassembled as a whole, improving construction efficiency; 2. By setting multiple adjustment holes on the back support rod, the inner size of the column mold can be quickly adjusted, enhancing the versatility of the template system; 3. By cooperating with the hinged limit seat and the positioning hole, the rotation limit and release of the template unit in the hinged state are realized, taking into account both stable assembly and controlled unfolding; 4. The adjustable back support can switch between unfolded support and closed storage, with a compact structure that facilitates transportation and reusability. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Appendix Figure 1 : A schematic diagram of the overall structure of the hinged column formwork of this utility model; Appendix Figure 2 Template frame structure diagram; Appendix Figure 3 : Structural diagram of the adjustable back support; Appendix Figure 4 : Diagram showing the adjustable back support in its stowed state; Appendix Figure 5 : Diagram showing the adjustable back support in its open position; Appendix Figure 6 Top view of the template in its closed state after assembly; Appendix Figure 7 Top view of the template under rigid positioning hole limit. Appendix Figure 8 : A partially enlarged schematic diagram of the rigid contact between the hinged positioning seat and the back support rod.

[0024] In the diagram: 1- Template frame; 2- Panel; 3- Adjustable back support; 4- Supporting diagonal bar; 5- Connecting pin; 101- Vertical frame; 102- Horizontal frame; 1021- Frame connecting hole; 103- Hinge limiting seat; 1031- Connecting hole; 1032- Positioning hole; 104- Back rib; 1041- Back rib hinge hole; 1042- First storage hole; 1043- First support hole; 301- Back support rod; 3011- Adjustment hole; 3012- Back support hinge hole; 3013- Second storage hole; 3014- Second support hole; 302- Linkage reinforcing beam. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: Please see Figures 1 to 8 This utility model provides a preferred embodiment of a hinged column formwork. The formwork consists of four identical formwork units connected end to end by hinges, forming a closed column formwork structure for casting square or rectangular concrete columns.

[0027] like Figure 1 and Figure 2 As shown, each template unit includes a template frame 1, a panel 2, an adjustable back brace 3, and a supporting diagonal brace 4. The template frame 1, as the main load-bearing skeleton, is a rectangular frame welded together from two vertical side frames 101 and two horizontal side frames 102. The horizontal side frames 102 include an upper side frame at the top of the frame and a lower side frame at the bottom of the frame. Multiple side frame connection holes 1021 are provided along the length of the upper and lower side frames. These connection holes are used both to vertically connect adjacent template units using high-strength bolts and to fix and install special lifting lugs during hoisting. To enhance the rigidity of the frame under the lateral pressure of concrete, at least one back rib 104 is provided horizontally between the two vertical side frames 101. In this embodiment, the vertical side frames 101 and horizontal side frames 102 are preferably rectangular steel pipes, and the back rib 104 is preferably a U-shaped steel with its opening facing away from the panel 2. Panel 2 is typically made of laminated plywood and is fixed to the template frame 1 from the back with screws, ensuring that there are no openings on the contact surface of panel 2, thereby ensuring the appearance quality of the concrete forming surface.

[0028] The adjustable back support 3 is installed on the back of the template frame 1 by means of hinge. Specifically, a back rib hinge hole 1041 is provided at the end of the back rib 104, and a corresponding back support hinge hole 3012 is provided at the end of the back support rod 301 of the adjustable back support 3. The two are hinged by a connecting pin 5 passing through them, so that the adjustable back support 3 can rotate around the hinge point.

[0029] To achieve hinged connections between template units, hinge limit seats 103 are welded to the outer side of the vertical frame 101. Please refer to... Figure 2 and Figure 8 The hinged limiting seat 103 is composed of two parallel steel plates, forming a slot for accommodating the insertion of the back support rod 301 of the adjacent unit. A connecting hole 1031 and a positioning hole 1032 are coaxially formed on the two steel plates. The installation height of the hinged limiting seat 103 corresponds to the position of the back rib 104 in the height direction.

[0030] like Figure 3 As shown, the adjustable back support 3 is a linkage component. It includes multiple parallel back support rods 301, which are preferably U-shaped profiles with an opening width slightly larger than the width of the back rib 104. The ends of the multiple back support rods 301 away from the hinge end are fixedly connected by a linkage reinforcing beam 302, connecting them into a whole. Each back support rod 301 has multiple adjustment holes 3011 evenly opened along its length direction. In this embodiment, the hole spacing of the adjustment holes 3011 is 50mm.

[0031] The size adjustment function of this utility model is achieved in the following way: When assembling the template, the hinge limiting seat 103 of one template unit is inserted between the back support rods 301 of the adjacent template units, so that the connecting hole 1031 is aligned with a pre-selected adjustment hole 3011 on the back support rod 301, and the connecting pin 5 (such as...) is inserted. Figure 6 (As shown). By selecting the adjustment holes 3011 at different positions, the lateral relative position of adjacent template units during assembly can be changed, thereby continuously and accurately adjusting the inner cavity size of the final enclosed column mold to adapt to the casting requirements of columns with different cross-sectional dimensions.

[0032] The supporting diagonal rod 4 is used to lock the adjustable back support 3 in its working state. A first support hole 1043 is provided on the back rib 104, and a second support hole 3014 is provided on the back support rod 301. When formwork support is required, the connecting pin 5 in the first storage hole 1042 is removed, and then the adjustable back support 3 is rotated and unfolded to a position approximately perpendicular to the template frame 1. Subsequently, the supporting diagonal rod 4 is removed from the middle of the back rib, and the connecting holes at both ends are connected to the first support hole 1043 and the second support hole 3014 respectively. The connecting pin 5 is then inserted, thereby fixing the adjustable back support 3 in its unfolded support state (e.g., ...). Figure 5 As shown in the figure, a stable triangular support structure is formed.

[0033] When the template needs to be transported or stored, it can be converted into a compact storage state. At this time, first remove the connecting pins at both ends of the support rod 4, dismantle the support rod 4, and place the support rod 4 in the middle of the opening of the back rib 104, aligning the connecting holes at both ends of the support rod 4 with the first storage hole 1042 of the back rib; then rotate the adjustable back support 3 towards the back of the template frame 1, so that the U-shaped groove of the back support rod 301 engages with the outside of the back rib 104. The back rib 104 has a first storage hole 1042, and the back support rod 301 has a corresponding second storage hole 3013. At this time, the support rod 4 is located in the cavity formed by the back rib 104 and the back support rod 301. Finally, use the connecting pin 5 to simultaneously pass through the first storage hole 1042, the second storage hole 3013, and the connecting hole at the end of the support rod 4 to lock all three synchronously (e.g., Figure 4 As shown in the figure, it saves a lot of space.

[0034] The advantages of this invention in the demolding and transportation process are achieved through the positioning holes 1032. When demolding is required after pouring, only the connecting pins 5 in one row of connecting holes 1031 need to be pulled out. The closed ring structure is transformed into a geometrically variable system, and each template unit flips outward around the remaining hinge points, allowing the column formwork to unfold as a whole, thus easily detaching from the concrete column and achieving fast and safe overall demolding. In the unfolded state after demolding, if overall hoisting and transportation are required, the connecting pins 5 can be inserted into the positioning holes 1032 of the hinge limit seat 103. At this time, the rod of the connecting pin 5 forms a rigid contact with the side of the web of the back support rod 301 of the adjacent template unit (e.g., Figure 8 (As shown). This resisting action forcibly limits the rotation angle between each hinged template unit, causing the entire unfolded template system to revert from a geometrically variable system back to a geometrically invariant system with a fixed shape (as shown). Figure 7 As shown in the figure, the entire unit can be safely lifted without additional binding.

[0035] During construction, the operation process is as follows: First, each template unit is converted from its stowed state to its unfolded and supported state. Second, using lifting equipment, the unfolded template units are hoisted to the construction position via the lifting lugs fixed to the connecting holes of the horizontal frame 102. Next, based on the designed column cross-section dimensions, the appropriate adjustment holes 3011 are determined on each back support rod 301, and the four template units are sequentially hinged to form a closed column form with accurate dimensions. Then, the verticality and position of the template are precisely adjusted, and concrete is poured. Finally, after the concrete reaches its strength, the entire formwork is dismantled in the above manner, and the entire template system is lifted away using the positioning holes 1032 for positioning and moved to the next work surface. For subsequent construction, it is only necessary to remove the connecting pins in the positioning holes 1032, then reassemble the template units into a rectangular structure, and insert the connecting pins 5 into the connecting holes 1031.

[0036] In this embodiment, the template frame 1 can be made of steel to ensure strength, the adjustable back support 3 can be made of aluminum alloy to reduce weight, and the panel 2 is made of laminated plywood to ensure the quality of the formed surface. The above structural design effectively solves the problems of low construction efficiency, poor safety, and large turnover loss of traditional scattered formwork.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hinged column formwork, characterized in that, It includes multiple template units, each template unit including a template frame (1), a panel (2) fixed inside the template frame (1), and an adjustable back support (3) hinged to the template frame. The template frame (1) includes a vertical frame (101), a horizontal frame (102), and a back rib (104) arranged horizontally along the column height direction. The side of the vertical frame is provided with a hinge limit seat (103), and the hinge limit seat (103) is provided with a connection hole (1031). The adjustable back support (3) includes multiple parallel back support rods (301), and multiple adjustment holes (3011) are provided on the back support rods (301). The back rib (104) and the adjustable back support (3) in the unfolded state are detachably connected by a support diagonal rod (4). In adjacent template units, the hinge limit seat (103) of one template unit and the back support rod (301) of the adjustable back support (3) of another template unit are hinged by a connecting pin (5) passing through the connecting hole (1031) and the adjusting hole (3011). Multiple template units are hinged in sequence and enclosed to form a closed column mold structure.

2. The hinged column formwork according to claim 1, characterized in that: The hinged limiting seat (103) has two mutually parallel limiting surfaces, and an insertion space for accommodating the back support rod (301) is formed between the two limiting surfaces. The position of the hinged limiting seat (103) corresponds to the position of the back rib (104).

3. A hinged column formwork according to claim 2, characterized in that, The back rib (104) is a U-shaped profile with its opening facing away from the panel (2). The back rib (104) has a hinge hole (1041) at its end and a corresponding back support hinge hole (3012) at its end. The two are hinged by a connecting pin (5) passing through them. The vertical frame (101) and the horizontal frame (102) are both rectangular profiles.

4. A hinged column formwork according to claim 3, characterized in that, The back support rod (301) has a U-shaped cross-section structure, and the opening width of the U-shaped cross-section structure is greater than the opening width of the back rib (104).

5. A hinged column formwork according to claim 4, characterized in that, The end of the back support rod (301) away from the back support hinge hole (3012) is fixedly connected by a linkage reinforcing beam (302), so that multiple back support rods (301) form a back support assembly that rotates synchronously as a whole.

6. A hinged column formwork according to claim 5, characterized in that, The adjustment holes (3011) are evenly arranged along the length of the back support rod (301). The connecting pins (5) can be respectively inserted into the connecting holes (1031) and the adjustment holes (3011) of the hinge limit seat (103). By selecting different adjustment holes (3011), the relative positions between adjacent template units are shifted, thereby changing the inner size of the closed column mold structure formed by the multiple template units to adapt to columns with different cross-sectional sizes.

7. A hinged column formwork according to claim 3, characterized in that, The back rib (104) is also provided with a first storage hole (1042), and the back support rod (301) is provided with a second storage hole (3013). When the adjustable back support (3) is in the closed storage state, the groove of the back support rod (301) is fastened to the outside of the back rib (104), and the support rod (4) is stored in the profile cavity formed by the back rib (104) and the back support rod (301); the connecting pin (5) passes through the second storage hole (3013), the first storage hole (1042) and the connecting holes at both ends of the support rod (4) to lock the three synchronously.

8. A hinged column formwork according to claim 7, characterized in that, The back brace (104) is also provided with a first support hole (1043), and the back support rod (301) is provided with a second support hole (3014). When the adjustable back support (3) is in the unfolded state, the two ends of the support rod (4) are respectively connected to the first support hole (1043) and the second support hole (3014) to lock the support angle of the back support rod (301) relative to the template frame (1).

9. A hinged column formwork according to claim 8, characterized in that, The hinged limiting seat (103) is also provided with a positioning hole (1032). When the connecting pin (5) is inserted into the positioning hole (1032) and forms an abutment with the side of the back support rod (301), the connecting pin (5) forms a rigid limit on the relative rotation between the template units, so as to limit the free rotation angle between each adjacent template unit and force the multiple hinged template units to maintain a relatively fixed geometric shape. When the connecting pin (5) is removed from the positioning hole (1032), the template unit can rotate relatively freely while maintaining the hinged connection, so as to realize the controlled unfolding and demolding of the column mold structure.

10. A hinged column formwork according to claim 1, characterized in that: The horizontal frame (102) includes an upper frame at the top and a lower frame at the bottom. Both the upper and lower frames are provided with multiple frame connection holes (1021) for vertical connection of adjacent template units or for installation of lifting lugs for hoisting.

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