Fabricated formwork column adopting full bolt connection and manufacturing method thereof

Abstract

The invention discloses an assembly type formwork column adopting full bolt connection and a manufacturing method thereof, and relates to the technical field of building formwork columns, the assembly type formwork column comprises a formwork column body, a connecting assembly is fixedly arranged at one end of the formwork column body, and the connecting assembly of one formwork column body is fixedly connected with the connecting assembly of the other formwork column body in a matched mode so that the two formwork column bodies can be fixedly connected. The connecting assembly adopts full bolt connection instead of a welding connection mode between steel bars during traditional formwork column assembly, and has the advantages of convenience in construction operation and high construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of building formwork columns, and in particular to an assembled formwork column using all-bolted connections and its manufacturing method. Background Technology

[0002] Formwork columns are a new type of prefabricated, assembled vertical load-bearing component produced through standardized and industrialized processes. They consist of a prefabricated concrete formwork with an internal steel cage of a certain thickness. This formwork itself serves as the template for the later-cast concrete core, reducing the need for on-site formwork installation and removal. This significantly simplifies on-site construction, increases efficiency, shortens the construction period, and effectively reduces costs. Furthermore, compared to fully precast concrete columns, prefabricated formwork columns are lighter because the core concrete is not prefabricated in the factory. This makes transportation, on-site installation, alignment, and splicing more efficient and convenient. Due to these advantages, formwork columns are now widely used in precast concrete structures. However, traditional formwork columns still have the following problems in practical applications: (1) There are a large number of vertical reinforcing bars extending from the formwork column and the spacing between the bars is small. When two adjacent formwork columns are fixedly assembled, the construction (welding) space between the reinforcing bars is severely limited, which greatly reduces the construction efficiency; (2) Due to the small bending stiffness of the vertical reinforcing bars extending from the precast formwork, they are prone to displacement or deformation during transportation, installation and pouring, which leads to the vertical reinforcing bars in the adjacent formwork columns not being able to be accurately connected or even not connected at all, affecting the construction quality and seriously reducing the safe bearing capacity at the connection position of the formwork column. Summary of the Invention

[0003] The purpose of this invention is to provide an assembled molded column with all-bolted connection and its manufacturing method in order to solve the above-mentioned problems.

[0004] The present invention achieves the above objectives through the following technical solutions:

[0005] An assembled molded column using a fully bolted connection includes a molded column, one end of which is fixedly provided with a connecting component. The connecting component of one molded column is engaged with the connecting component of another molded column to fix the two molded columns together.

[0006] Preferably, the connecting assembly includes a base plate, which is fixedly installed at the end of the mold column. A vertical plate perpendicular to the base plate is fixedly disposed on the base plate, and the vertical plates are arranged in a ring. A connecting plate is fixedly disposed on the outer side of the vertical plate. Multiple connecting plates are fixedly connected to the base plate, and the connecting plates are perpendicular to both the vertical plates and the base plate. A second mounting hole is provided on the connecting plate. Connecting plates of the connecting assembly on one mold column are placed correspondingly to those of the connecting assembly on another mold column. Connecting pieces are placed on both sides of the connecting plate. Second mounting holes are provided on the connecting pieces near the second mounting holes of the connecting plates at both ends. The two connecting assemblies are fixedly connected by bolts sequentially passing through the connecting pieces, connecting plates, and connecting pieces engaging with nuts.

[0007] Preferably, the substrate is provided with a first mounting hole, and there are multiple first mounting holes. The reinforcing bars of the mold shell column extend into the first mounting holes, and the substrate and the reinforcing bars of the mold shell column are fixedly connected at the first mounting hole position by welding.

[0008] Preferably, the diameter of the first mounting hole is 2 to 4 mm larger than the diameter of the reinforcing bar of the mold column.

[0009] Preferably, the first mounting holes are distributed in an inverted frustum shape.

[0010] Preferably, a positioning component is fixedly provided on the connecting component. The positioning components are arranged in pairs, with the two positioning components located on opposite sides of the connecting component. There is at least one set of positioning components. The positioning component includes a positioning block and a pin. A positioning block is fixedly installed on the inner side of the upright plate of the connecting component of one mold shell column. The positioning block is distributed along the length direction of the mold shell column and extends to the outside of the upright plate. A first positioning hole is provided at the end of the positioning block away from the upright plate. A second positioning hole is provided on the upright plate of the connecting component of the other mold shell column, corresponding to the position of the first positioning hole. The pin passes through the second positioning hole and the first positioning hole in sequence and is adapted to both.

[0011] Preferably, the end of the pin near the outer side of the upright plate is fixedly provided with an ear plate, the ear plate is provided with a second mounting hole near both sides, and the upright plate is provided with a third mounting hole corresponding to the second mounting hole on the ear plate. The third mounting hole is provided with a thread, and the ear plate is fixedly installed on the upright plate by bolts.

[0012] Preferably, the first positioning hole is oblong, elliptical, circular, or rectangular.

[0013] A method for manufacturing an assembled molded column using fully bolted connections, the method comprising the following steps:

[0014] (1) Make a skeleton by selecting several steel bars and several stirrups, evenly placing the stirrups on the steel bars and tying them in sequence to obtain the skeleton;

[0015] (2) Pour concrete, set up formwork on the inner and outer sides of the skeleton, then pour concrete and ensure that the steel bars at both ends of the skeleton extend to the outside of the concrete to obtain the hollow shell column pre-finished product.

[0016] (3) Install the connecting component. Take a connecting component and align the first mounting holes on the base plate of the connecting component with the steel bars extending from one end of the pre-finished mold column. Then, put the base plate on the end of the pre-finished mold column. At this time, the steel bars extending from the end of the pre-finished mold column are located in the first mounting holes of the base plate. Finally, weld the first mounting hole position by welding to fix the steel bars to the base plate, thereby fixing one connecting component to one end of the pre-finished mold column and obtaining the finished mold column.

[0017] Preferably, in step (2), the length of the reinforcing bar extending to the outside of the concrete is 6-8 mm.

[0018] The beneficial effects of the present invention are as follows: (1) The connecting components of the present invention adopt a full bolt connection, which replaces the traditional welding connection method between steel bars when assembling the formwork column, and has the advantages of convenient construction operation and high construction efficiency; (2) The connection between the two connecting components of the full bolt connection is stable and firm, ensuring the safe bearing capacity at the connection position of the formwork column; (3) The positioning component can provide a positioning reference for the assembly of the two connecting components, increasing the convenience of subsequent construction operations (bolt connection); (4) The positioning block of the positioning component can also be used as a lifting lug during the hoisting operation of the formwork column, which facilitates the hoisting operation of the formwork column. Attached Figure Description

[0019] Figure 1 This is a first schematic diagram of the assembly of the two mold shell pillars of the present invention;

[0020] Figure 2 This is a second schematic diagram of the assembly of the two mold shell pillars of the present invention;

[0021] Figure 3 This is a first schematic diagram of the connection component of the present invention;

[0022] Figure 4 This is a second schematic diagram of the connection component of the present invention;

[0023] Figure 5 This is a first schematic diagram showing the two connecting components of the present invention in action;

[0024] Figure 6 This is a second schematic diagram showing the two connecting components of the present invention in action;

[0025] Figure 7 This is a third schematic diagram of the assembly of the two mold shell pillars of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Mold column; 11. Reinforcing bar; 2. Connecting assembly; 21. Base plate; 211. First mounting hole; 22. Vertical plate; 221. Second positioning hole; 222. Third mounting hole; 23. Connecting plate; 231. Second mounting hole; 24. Connecting piece; 25. Bolt; 26. Nut; 3. Positioning assembly; 31. Positioning block; 311. First positioning hole; 32. Pin; 33. Ear plate. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figure 1 and Figure 2 As shown, the present invention provides an assembled molded column using a fully bolted connection, comprising a molded column 1, with a connecting component 2 fixedly disposed at one end of the molded column 1, and at least one end of each molded column 1 being fixedly mounted with the connecting component 2. The connecting component 2 of one molded column 1 cooperates with the connecting component 2 of another molded column 1 to fixally connect the two molded columns 1.

[0030] Based on the above embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the connecting component 2 includes a base plate 21, which is fixedly mounted on the end of the mold column 1. Vertical plates 22, perpendicular to the base plate 21, are fixedly disposed on the base plate 21 in a ring arrangement. The base plate 21 and the vertical plates 22 can be fixedly connected by welding or by integral molding. Connecting plates 23 are fixedly disposed on the outer side of the vertical plates 22. Multiple connecting plates 23 are provided, and the number of connecting plates 23 is determined according to actual engineering requirements. The connecting plates 23 are fixedly connected to the base plate 21, that is, the connecting plates 23 are fixedly connected to both the vertical plates 22 and the base plate 21. The connecting plates 23 are perpendicular to both the vertical plates 22 and the base plate 21. A second mounting hole 231 is provided on the connecting plate 23. Figure 5 and Figure 6As shown, when assembling two adjacent formwork columns 1, the connecting plate 23 of the connecting component 2 on one formwork column 1 is first placed opposite the connecting plate 23 of the connecting component 2 on the other formwork column 1. Then, connecting pieces 24 are placed on both sides of the connecting plate 23. The connecting piece 24 has a second mounting hole 231 near the second mounting hole 231 of the corresponding connecting plate 23 at both ends. Finally, bolts 25 are passed through the second mounting holes 231 of one connecting piece 24, the second mounting holes 231 of the connecting plate 23, and the second mounting holes 231 of the other connecting piece 24 in sequence. The bolts 25 and nuts 26 are engaged and threaded to lock the connection, thus fixing the two connecting components 2 together, thereby achieving the fixed assembly of the two adjacent formwork columns 1. The connecting components of this technical solution use a full bolt connection, replacing the traditional welding connection method between the reinforcing bars in the assembly of formwork columns, which has the advantages of convenient construction and high construction efficiency.

[0031] Furthermore, such as Figure 3 and Figure 7 As shown, the base plate 21 is provided with a first mounting hole 211, and there are multiple first mounting holes 211. The reinforcing bar 11 of the mold shell column 1 extends into the first mounting hole 211, and the base plate 21 and the reinforcing bar 11 of the mold shell column 1 are fixedly connected at the first mounting hole 211 by welding, such as by plug welding.

[0032] Furthermore, such as Figure 3 As shown, the diameter of the first mounting hole 211 is 2-4 mm larger than the diameter of the reinforcing bar 11 of the mold column 1. This facilitates the alignment of the reinforcing bar 11 of the mold column 1 with the first mounting hole 211 of the base plate 21. The first mounting holes 211 are arranged in an inverted frustum shape to facilitate plug welding. In this case, the diameter of the smallest circle of the inverted frustum is 2-4 mm larger than the diameter of the reinforcing bar 11 of the mold column 1.

[0033] Based on the above embodiments, such as Figure 1 , Figure 3 and Figure 4As shown, a positioning component 3 is fixedly installed on the connecting component 2. Positioning components 3 are arranged in pairs, with the two positioning components 3 located on opposite sides of the connecting component 2. There is at least one set of positioning components 3; in this embodiment, two sets of positioning components 3 are used. The positioning component 3 includes a positioning block 31 and a pin 32. A positioning block 31 is fixedly installed on the inner side of the upright plate 22 of the connecting component 2 of one mold column 1 by welding. The positioning block 31 is distributed along the length of the mold column 1 and extends outside the upright plate 22. A first positioning hole 311 is provided at the end of the positioning block 31 away from the upright plate 22. A second positioning hole 221 is provided on the upright plate 22 of the connecting component 2 of the other mold column 1, corresponding to the position of the first positioning hole 311. The pin 32 passes sequentially through the second positioning hole 221 and the first positioning hole 311 and is adapted to both; that is, the shape of the pin 32 is the same as the shape of the first positioning hole 311 and the second positioning hole 221. The first positioning hole 311 can be oblong, elliptical, circular, or rectangular. In this embodiment, the first positioning hole 311 is oblong. The positioning component 3 provides a positioning reference for the assembly of the two connecting components 2, increasing the convenience of subsequent construction operations. At the same time, the positioning block 31 of the positioning component 3 can also serve as a lifting lug during the hoisting operation of the formwork column 1, facilitating the hoisting operation of the formwork column 1.

[0034] Furthermore, such as Figure 4 and Figure 6 As shown, a lug plate 33 is fixedly installed at the end of the pin 32 near the outer side of the upright plate 22. The lug plate 33 has second mounting holes 231 near both sides, and the upright plate 22 has a third mounting hole 222 corresponding to the second mounting holes 231 on the lug plate 33. The third mounting hole 222 is threaded. The lug plate 33 is fixedly installed on the upright plate 22 by bolts 25. This increases the shear resistance at the connection point of the two mold shell pillars 1.

[0035] Both the connecting component 2 and the positioning component 3 in this technical solution can be made of steel.

[0036] like Figure 1 and Figure 7As shown, the present invention also provides a manufacturing method for an assembled formwork column using a fully bolted connection. The manufacturing method includes the following steps: (1) making a skeleton by selecting several steel bars 11 and several stirrups, uniformly placing the stirrups on the steel bars 11 and binding them in sequence to obtain the skeleton. (2) pouring concrete by setting up formwork on the inner and outer sides of the skeleton, then pouring concrete and ensuring that the steel bars 11 at both ends of the skeleton extend to the outside of the concrete to obtain a hollow formwork column 1. The length of the steel bars 11 extending to the outside of the concrete is 6-8 mm. (3) Install the connecting component 2. Take a connecting component 2 and align the first mounting holes 211 on the base plate 21 of the connecting component 2 with the steel bars 11 extending from one end of the pre-finished mold column 1 respectively. Then, put the base plate 21 on the end of the pre-finished mold column 1. At this time, the steel bars 11 extending from the end of the pre-finished mold column 1 are located in the first mounting holes 211 of the base plate 21. Finally, weld the first mounting holes 211 to fix the steel bars 11 to the base plate 21, thereby fixing one connecting component 2 to one end of the pre-finished mold column 1 and obtaining the finished mold column 1.

[0037] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Those skilled in the art should understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and all such changes should be covered within the protection scope of the present invention. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A prefabricated mold column using all-bolted connections, comprising a mold column, characterized in that: A connecting component is fixedly provided at one end of each mold shell column. The connecting component of one mold shell column is fixedly connected to the connecting component of another mold shell column, thereby fixing the two mold shell columns together.

2. The assembled mold column with all-bolted connection according to claim 1, characterized in that: The connecting assembly includes a base plate, which is fixedly installed at the end of the mold shell column. A vertical plate perpendicular to the base plate is fixedly disposed on the base plate in a ring arrangement. A connecting plate is fixedly disposed on the outer side of the vertical plate. Multiple connecting plates are fixedly connected to the base plate and are perpendicular to both the vertical plate and the base plate. A second mounting hole is provided on the connecting plate. Connecting plates of the connecting assembly on one mold shell column are placed correspondingly to those on another mold shell column. Connecting pieces are placed on both sides of the connecting plate. Second mounting holes are provided on the connecting pieces near the corresponding second mounting holes on the connecting plates at both ends. Bolts are used to sequentially pass through the connecting pieces, connecting plates, and connecting pieces, which then engage with nuts to securely connect the two connecting assemblies.

3. The assembled mold column with all-bolted connection according to claim 2, characterized in that: The substrate is provided with a first mounting hole, and there are multiple first mounting holes. The reinforcing bars of the mold shell column extend into the first mounting holes. The substrate and the reinforcing bars of the mold shell column are fixedly connected at the first mounting hole position by welding.

4. The assembled mold column with all-bolted connection according to claim 3, characterized in that: The diameter of the first mounting hole is 2 to 4 mm larger than the diameter of the reinforcing bar of the mold column.

5. A prefabricated mold column with all-bolted connection according to claim 3, characterized in that: The first mounting holes are distributed in an inverted frustum shape.

6. A prefabricated mold column with all-bolted connection according to claim 2, characterized in that: A positioning component is fixedly provided on the connecting component. The positioning components are in groups of two, and the two positioning components are located on opposite sides of the connecting component. There is at least one group of positioning components. The positioning component includes a positioning block and a pin. A positioning block is fixedly installed on the inner side of the upright plate of the connecting component of one mold shell column. The positioning block is distributed along the length direction of the mold shell column and extends to the outside of the upright plate. A first positioning hole is provided at the end of the positioning block away from the upright plate. A second positioning hole is provided on the upright plate of the connecting component of the other mold shell column, corresponding to the position of the first positioning hole. The pin passes through the second positioning hole and the first positioning hole in sequence and is adapted to both.

7. A prefabricated mold column with all-bolted connection according to claim 6, characterized in that: The end of the pin near the outer side of the upright plate is fixedly provided with an ear plate. The ear plate is provided with a second mounting hole near both sides. The upright plate is provided with a third mounting hole corresponding to the second mounting hole on the ear plate. The third mounting hole is provided with a thread. The ear plate is fixedly installed on the upright plate by bolts.

8. A prefabricated mold column with all-bolted connection according to claim 6, characterized in that: The first positioning hole is oblong, elliptical, circular, or rectangular.

9. A method for manufacturing an assembled molded column using fully bolted connections, characterized in that: The manufacturing method includes the following steps: (1) Make a skeleton by selecting several steel bars and several stirrups, evenly placing the stirrups on the steel bars and tying them in sequence to obtain the skeleton; (2) Pour concrete, set up formwork on the inner and outer sides of the skeleton, then pour concrete and ensure that the steel bars at both ends of the skeleton extend to the outside of the concrete to obtain the hollow shell column pre-finished product. (3) Install the connecting component. Take a connecting component and align the first mounting holes on the base plate of the connecting component with the steel bars extending from one end of the pre-finished mold column. Then, put the base plate on the end of the pre-finished mold column. At this time, the steel bars extending from the end of the pre-finished mold column are located in the first mounting holes of the base plate. Finally, weld the first mounting hole position by welding to fix the steel bars to the base plate, thereby fixing one connecting component to one end of the pre-finished mold column and obtaining the finished mold column.

10. A method for manufacturing an assembled molded column using a fully bolted connection according to claim 9, characterized in that: In step (2), the length of the reinforcing bar extending beyond the outside of the concrete is 6 to 8 mm.

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