FIXING SYSTEM FOR MODULAR HOUSING CONSTRUCTION

Abstract

The present invention relates to a fastening system for modular housing construction, characterized in that it comprises: (a) an outer tube; (b) a shaft having external threading at both ends; (c) one end of said shaft comprises a washer, a retaining element, a cross-shaped element, a base plate with a central opening, wherein said cross-shaped element is attached to said base plate by means of screws, and a nut; and (d) the second end of said threaded shaft comprises a funnel-shaped element and a base. Furthermore, the present invention relates to the use of said fastening system for modular housing construction.

Description

[0001]DESCRIPTION Fixing system for modular housing construction OBJECT OF THE INVENTION The present invention belongs to the construction sector, and more specifically to modular housing construction. The object of the present invention is a fixing or tying system for modular housing construction, which provides rigidity and fixation and with which it is possible to carry out pre-assembly in the factory, which allows the use of less specialized labor in its assembly. BACKGROUND OF THE INVENTION Prefabricated modular construction is currently widely known. Where, from standardized sections, homes and even buildings of all types are manufactured in advance far from their destination point, generally in a factory or workshop, to subsequently be moved and sent to their final location for final positioning and assembly.The benefits of modular construction are well-known, such as improved construction speed, quality, and safety, while significantly reducing overall costs, material waste, and environmental impact. As a result, the number of homes incorporating this type of system has increased in recent years. However, when these modular homes or buildings are assembled floor by floor, the entire structure may shift or move, with the associated risks such as cracks, insulation failure, and internal noise, among others.To overcome the aforementioned drawbacks and reduce these potential hazards, the inventor, after extensive research and testing, has developed a new beam fixing system that meets the aforementioned requirements, along with easy repair in the event of damage. This system provides two very important elements in modular home construction: increased safety, since the system is pre-assembled in the factory, eliminating potential errors in measurement, geometry, or positioning, and greater ease of assembly and disassembly.Furthermore, this system The fixing system for modular housing construction, according to the present invention comprises: (a) an outer tube; (b) an axle having external threads at both ends; (c) one end of said axle comprises a washer, a retaining element, a cross-shaped element, a base plate with a central opening, in which said cross-shaped element is attached to said base plate by means of screws, and a nut; and (d) the second end of said threaded axle comprises a funnel-shaped element and a base. In a preferred embodiment, said outer tube is a tube with a square cross-section. In another embodiment, said outer tube is made of commercial steel. In a preferred embodiment, said threaded axle is made of steel, more preferably 125 TT steel, which is a chromium molybdenum alloy (42CrMo4) and provides great strength.In another preferred embodiment, the threaded shaft at its ends has a metric thread size 20 at a standard pitch. In a preferred embodiment, all the elements comprising the fixing system for modular housing construction according to the present invention, except for the outer tube, are made of 125TT steel. At the second end of the fixing system for modular housing construction object of the invention, the thread is free to allow the coupling of a second fixing system at the end comprising the nut, i.e., what is known as "beam-to-beam." In this way, when the system of the invention is used, damage to the tie-down tips can be minimized, while also allowing for correct alignment and stackability. In a final aspect, another object of the present invention is the use of a fixing system as described above for modular housing construction.It is evident to a person skilled in the art that the elements of the fixing system of the present invention may vary in geometry, measurements, lengths and materials depending on the intended use thereof and, for example, the final height of the modular home in which it is intended to be used. For a better understanding, explanatory drawings of embodiments of the present invention are attached by way of example, which are merely non-limiting examples. Figure 1 shows a perspective view of a fixing system according to the present invention, showing the different parts comprising said system. Figure 2 shows a perspective view similar to that of Figure 1, in which the system has been shown such that the details of the lower part thereof can be observed.Figure 3 shows a plan view (A) and perspective view (B) of an embodiment of a crosshead used in the fixing system according to the present invention. Figure 4 shows a plan view (A) and perspective view (B) of an embodiment of the shaft threaded at its ends used in the fixing system according to the present invention. Figure 5 shows a plan view (A) and perspective view (B) of an embodiment of the base used in the fixing system according to the present invention. Figure 6 shows a front view (A), a plan view (B) and a perspective view (C) of a nut used in the fixing system according to the present invention. Figure 7 is a plan view (A) and perspective view (B) of a washer used in the fixing system according to the present invention. Figure 8 shows a plan view (A) and perspective view (B) of a rear stop of the fixing system according to the present invention.Figure 9 shows a plan view (A) and a perspective view (B) of a base plate of the fixing system according to the present invention. Figure 10 shows a plan view (A), a front view (B) and a perspective view (C) of a funnel-shaped piece used in the fixing system according to the present invention. Figure 11 shows a plan view (A), a front view (B) and a perspective view (C) of a connecting piece used in the fixing system according to the present invention. Figures 12 and 13 show a plan view of three housing modules and an already assembled house, respectively, in which the fixing system according to the present invention has been used. As can be seen in Figure 1, one embodiment of the fixing system -1- for modular housing construction, according to the present invention, comprises an outer tube -2- with a square cross-section.Furthermore, it comprises a shaft -3- having an external thread at both ends -3'-, one of the ends thereof comprising a washer -4-, a retaining element -5- or stop, a cross-shaped element (shown in Figure 2), a base plate -6- with a central opening and a nut -7-, and the second end -3'- of said threaded shaft -3- comprises a funnel-shaped element -8- and a base -6'-. Figure 2 shows the same embodiment of the fixing system -1- for modular housing construction as in Figure 1, but viewed from its top. It can be seen that the crosshead -9- is fixed to the base plate -6- by means of four screws -10, 10', 10'', 10'''-. Figure 3 shows a plan view (A) and perspective view (B) of an embodiment of a crosshead -9- used in the fixing system according to the present invention.As can be seen, said crosspiece -9- has a substantially rectangular shape and has a circular hole -11- in its central part with a diameter suitable for the threaded shaft -3- to pass through. In addition, it has four holes -12,12',12'',12'''- at its ends, suitable for the screws -10,10',10'',10'''- to fix it to the base plate -6-. Figure 4 shows a plan view (A) and a perspective view (B) of an embodiment of the shaft -3- threaded at its ends. , used in the fixing system according to the present invention. Figure 5 shows a plan view (A) and perspective view (B) of an embodiment of the base -6'- used in the fixing system according to the present invention. It is observed that said base It has an essentially square shape and has a circular hole -13- in its central part with a diameter suitable for the threaded shaft -3- to pass through. Figure 6 shows a front (A), plan (B) and perspective (C) view of a nut -7- used in the fixing system according to the present invention. It is observed that said nut has a thread -15- suitable for being threaded onto one of the ends of the threaded shaft -3-, which passes through the hole -14-. Figure 7 is a plan (A) and perspective (B) view of a washer -4- used in the fixing system according to the present invention. Said washer -4- has a diameter -16- suitable for the threaded shaft -3- to pass through it. Figure 8 shows a plan (A) and perspective (B) view of a retaining element or stop -5- of the fixing system according to the present invention.Said retention element -5- has two different diameters, a smaller diameter -17- and a larger diameter -18-, the retention being carried out at the place where both diameters intersect. Figure 9 shows a plan view (A) and a perspective view (B) of a base plate -6- of the fixing system according to the present invention. It can be seen that it has an essentially square shape to fit inside the outer tube, with rounded corners and a central hole -19- and four holes -20,20',20'',20'''- suitable for allowing the screws -10- to pass through them. Figure 10 shows a plan view (A), a front view (B) and a perspective view (C) of a funnel-shaped piece -8-, used in the fixing system according to the present invention.It can be seen that it has an essentially square shape to fit inside the outer tube, with rounded corners and a central hole -21- suitable for allowing the threaded shaft -3- to pass through it. In addition, the funnel has an angle -22- suitable for helping the threaded shaft -3- to be introduced into the hole -21-. Figure 11 shows a plan view (A), a front view (B) and a perspective view (C) of a connecting piece -23- between two fixing systems according to the present invention. Figures 12 and 13 show a plan view of three housing modules and an already assembled house, respectively, in which the fixing system -1- according to the present invention has been used. The assembly of the fixing system of the present invention is carried out as follows: firstly, the nut -7- is screwed onto one of the ends of the threaded shaft -3-, with the hexagon of said nut -7- facing the outside of the shaft.Subsequently, the crosshead -9- is introduced through the opposite end of the threaded shaft -3- through which the nut -7- has been threaded and is positioned so that the nut -7- passes through a circular hole -11- in its central part. Next, the washer -4- is introduced through the same end of the threaded shaft -3- through which the crosshead -9- was introduced up to the recess of the nut -7-. Next, the threaded shaft -3-, the washer -4- and the nut -7- are joined by welding on the side opposite to where said nut -7- is threaded, forming a first subset of the parts of the fixing system of the present invention. The objective of this welding is to keep this entire first subset together and prevent it from being easily disassembled.An advantage of forming a first subassembly in the manner mentioned above is that it can be coupled to the rest of the parts of the fastening system of the present invention, either in the factory itself or on-site at the time of assembly of said modules. Next, a second subassembly is prepared, consisting of the base plate -6- and the retention element -5- or stop, in which said parts are joined by welding. Said welding must be a light weld, since said union does not require great subsequent efforts. Subsequently, a third subassembly is prepared, consisting of the funnel -8- and the base -6'- by means of spot welding between said parts. Next, the fourth and last subassembly is prepared, consisting of the outer tube -2- and the second and third subassemblies, which have been prepared as described above.At one end of the outer tube -2-, the second subassembly is welded approximately 20 mm from the outside of the tube by means of a strong weld, preferably 5x5 mm, around the entire perimeter, so that the retaining element -5- or stop is towards the inside of the outer tube -2-. At the other end of the outer tube -2-, the third subassembly is welded using the same type of 5x5 mm weld, placing the position of the funnel -8- towards the inside of the outer tube -2-, at the same distance from the outside of the tuno as the second subassembly, approximately 20 mm. The fourth subassembly will be the connecting pillar between the fixing modules of the present invention, with the second subassembly on the roof side of said module and the third subassembly on the floor side of the modular home.Subsequently, for example, already on site, the first subassembly is introduced through the side of the outer tube -2- where the second subassembly (roof of the module) is welded, bringing out the end of the threaded shaft -3- through the part at the bottom of the outer tube -2- where the third subassembly has been welded. The funnel -8- has the objective of helping or guiding the threaded shaft -3- to be introduced through the third subassembly. Once introduced, the retaining element -5- or stop has the function of preventing the first subassembly from moving completely downwards by gravity, but rather the crosshead -9- and the retaining element -5- or stop interfere with each other. The crosshead -9- is then rotated 90º between the pieces that comprise the second subassembly and is fixed by means of screws -10, 10', 10'', 10'''- to the base plate -6-.In this way, a first fixing system according to the present invention would be ready for a second fixing system according to the present invention to be assembled one on top of the other by threading the end of the threaded shaft -3- of the second system with the nut -7- of the first system placed previously, and so on. The union -21- is placed between two fixing systems according to the present invention, remaining inside both outer tubes. This piece has the objective of avoiding axial displacement between both fixing systems. Although the invention has been described based on representative examples, it should be understood that these are not limiting and that the invention will be limited only by the scope of the appended claims.Furthermore, it is evident that those skilled in the art, after learning about the present invention from its description, claims and drawings, may introduce multiple modifications that, as long as they do not depart from the spirit of the invention, will be included within its scope.

Claims

1. A fixing system for modular housing construction, characterized in that it comprises: (a) an outer tube; (b) a shaft having external threads at both ends; (c) one end of said shaft comprises a washer, a retaining element, a cross-shaped element, a base plate with a central opening, wherein said cross-shaped element is attached to said base plate by means of screws, and a nut; and (d) the second end of said threaded shaft comprises a funnel-shaped element and a base.

2. A fixing system according to claim 1, characterized in that said outer tube is a tube with a square cross-section.

3. A fixing system according to claim 1 or 2, characterized in that said outer tube is made of commercial steel.

4. A fixing system according to any of the preceding claims, characterized in that said threaded shaft is made of steel.Fixing system according to claim 4, characterized in that said threaded shaft is made of 125 TT steel.

6. Fixing system according to any of the preceding claims, characterized in that said threaded shaft at its ends has a metric 20 thread at normal pitch at both ends.

7. Fixing system according to any of the preceding claims, characterized in that all the elements that form the fixing system except the outer tube are made of 125 TT steel.

8. Use of a fixing system according to any of claims 1 to 7, for the modular construction of homes.

Images