Cable-strut device and method of construction for modular buildings

Abstract

The application discloses a cable counter-pulling device for modular buildings and a construction method, the cable counter-pulling device comprising a pre-buried device and a post-inserted cable device; the pre-buried device is pre-buried in the side wall of a modular building unit; the pre-buried device comprises a first pre-buried part; the first pre-buried part is provided with a connecting groove for connecting with the post-inserted cable device; the post-inserted cable device comprises a framework device, a pull head device and a cable; the framework device comprises a first side frame body and a second side frame body; the first side frame body and the second side frame body are respectively provided with a plurality of pull head devices; the first side frame body and the second side frame body are respectively arranged into the set connecting groove; the cable is used for connecting the pull head devices on the first side frame body and the second side frame body together. The cable counter-pulling device can realize the counter-pulling of the side wall of the modular building unit, thereby reducing the influence of the side pressure of the post-cast concrete on the side wall of the modular building unit; and the construction method can reduce the installation difficulty of the cable counter-pulling device.

Description

Technical Field

[0001] This invention belongs to the technical field of cable tie devices, specifically relating to a cable tie device and construction method for modular buildings. Background Technology

[0002] Modular buildings have broad development prospects, characterized by high construction efficiency, excellent quality, and environmental friendliness, making them the most integrated new type of prefabricated building currently available. In modular buildings with shear wall structures as the main structure, individual shear walls are typically divided into modular building units on both sides. After the modular building units on both sides are in place, concrete is poured between the side walls to form a complete shear wall. Currently, it is necessary to develop a cable-stayed tensioning device for modular buildings to achieve tensioning of the side walls of the modular building units, thereby reducing the impact of the lateral pressure of the post-poured concrete on the side walls of the modular building units. It is also necessary to develop a construction method for the cable-stayed tensioning device to reduce the installation difficulty and improve the construction efficiency of the new cable-stayed tensioning device. Summary of the Invention

[0003] To address the aforementioned problems in the prior art, the present invention provides a cable-stayed tensioning device for modular buildings, which can achieve tensioning of the side walls of modular building units, thereby reducing the impact of post-cast concrete lateral pressure on the side walls of modular building units.

[0004] The present invention adopts the following technical solution: A cable-stayed connection device for modular buildings includes a pre-embedded device and a rear-inserted cable device. The pre-embedded device is embedded in the side wall of a modular building unit. The pre-embedded device includes a first pre-embedded component with a connecting groove for connecting with the rear-inserted cable device. The rear-inserted cable device includes a frame device, a pull head device, and a cable. The frame device includes a first side frame and a second side frame. The first side frame and the second side frame are each provided with a plurality of pull head devices. The first side frame and the second side frame are respectively used to be placed into the designated connecting grooves. The cable is used to connect the pull head devices on the first side frame and the pull head devices on the second side frame.

[0005] Furthermore, the pre-embedded device also includes a second pre-embedded component; the second pre-embedded component is connected to the first pre-embedded component; the first pre-embedded component and the second pre-embedded component are together pre-embedded in the side wall of the modular building unit.

[0006] Furthermore, the skeleton device also includes a top frame; the first side frame is connected to the second side frame through the top frame.

[0007] Furthermore, the skeleton device also includes a first connector; the first side frame is connected to the second side frame through the first connector.

[0008] Furthermore, the pull head device includes a pull ring and a connecting plate; the pull ring is disposed on the connecting plate; the connecting plate is used to be disposed on the first side frame or the second side frame; the pull ring is used to connect with the pull cable.

[0009] Furthermore, a cable tie device for modular buildings also includes a cable locking device; the cable locking device is disposed on the frame device, one end of the cable is connected to the cable locking device, and the cable locking device is used to lock the cable.

[0010] Furthermore, the cable locking device includes a first bolt, a first collar, a second collar, and a first nut; the first bolt is configured to pass through the first collar and the second collar, the first collar and the second collar maintain a set distance, the bolt portion between the first collar and the second collar is used to connect with the cable, and the first collar and the second collar are respectively used to fix to the frame device; one end of the first bolt is provided with a threaded portion; the first nut is used to connect with the threaded portion.

[0011] Furthermore, a cable tie device for modular buildings also includes a top-mounting device, one end of which abuts against the side wall of a modular building unit, and the other end of which abuts against the side wall of another modular building unit.

[0012] Furthermore, the jacking device includes a third nut and a second bolt; the third nut has a set length; the second bolt is threadedly connected to the third nut; one end of the third nut abuts against the side wall of a modular building unit, and one end of the second bolt abuts against the side wall of another modular building unit.

[0013] Another objective of this invention is to provide a construction method for a cable-stayed connection device, thereby reducing the installation difficulty of the novel cable-stayed connection device and improving its construction efficiency.

[0014] A method for constructing a cable-stayed tie device, based on the aforementioned cable-stayed tie device for modular buildings, includes the following steps: S1. The pre-embedded device is pre-embedded in the side wall of the modular building unit to ensure that the connecting groove of the first pre-embedded part can be connected to the subsequent rear-inserted cable device. The rear-insertion cable device is manufactured so that the cable initially connects the pull head device on the first side frame and the pull head device on the second side frame together; S2. Hoist several modular building units to the set installation position, so that the side walls of two opposite modular building units maintain a set distance, and the connecting grooves on the side walls of the two opposite modular building units face each other. S3. Insert the first side frame and the second side frame into the connecting slots that face each other, respectively; S4. Install a top-fitting device between the side walls of two modular building units, so that one end of the top-fitting device abuts against the side wall of one modular building unit and the other end abuts against the side wall of the other modular building unit. S5. Adjust the cable to tighten and connect the pull head device on the first side frame and the pull head device on the second side frame together, and then fix one end of the cable. S6. Complete the tensioning between the side wall of one modular building unit and the side wall of another opposite modular building unit.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention discloses a cable-stayed tie-down device for modular buildings. The device is pre-embedded in the side walls of the modular building units, eliminating the need for on-site drilling and effectively preventing damage to the interior of the modular building units. It also eliminates the need for post-construction patching and does not affect the interior decoration. The invention uses a connecting groove on the first pre-embedded component and a rear-inserted cable-stayed device to tie the side walls of two opposing modular building units together. The space between the two units can then be used for concrete pouring. The rear-inserted cable-stayed device prevents deformation and cracking of the side walls caused by the lateral force of the poured concrete. After the side walls of the two opposing modular building units are joined with the poured concrete, a complete shear wall is formed. This design reduces the construction difficulty of modular building shear walls, effectively reduces the impact of the lateral pressure of the poured concrete on the side walls of the modular building units, and improves the construction quality of modular building shear walls.

[0016] The present invention provides a cable-stayed tensioning device for modular buildings, which can achieve tensioning of the side walls of modular building units, thereby reducing the impact of the lateral pressure of the post-cast concrete on the side walls of the modular building units.

[0017] The present invention provides a construction method for a cable-stayed tie device, which has clear construction steps (steps S1 to S6), can guide the construction of the new cable-stayed tie device, reduce the installation difficulty of the new cable-stayed tie device, and improve the construction efficiency of the new cable-stayed tie device. Attached Figure Description

[0018] The technology of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a front view of the pre-embedded device; Figure 2 This is a top view of the pre-embedded device; Figure 3 yes Figure 1 A magnified view of the area at point K; Figure 4 This is a left view of two pre-embedded devices; Figure 5 This is an elevation view of the rear cable insertion device and the cable locking device; Figure 6 This is a top view of the rear cable device being inserted into the designated connecting slot; Figure 7 This is an elevation view of the rear cable device being inserted into the designated connecting slot; Figure 8 yes Figure 5 A magnified view of the area at point M; Figure 9 This is a top view showing the connection relationship between the reinforcing bars and the first and second side frames. Figure 10 yes Figure 5 A magnified view of the area at point N; Figure 11 This is a schematic diagram showing the pull head device installed on the second side frame; Figure 12 yes Figure 11 The left view; Figure 13 yes Figure 12 Top view; Figure 14 yes Figure 5 A magnified view of the area at point L; Figure 15 This is a schematic diagram of the top-mounted device; Figure 16 An elevation diagram showing the side wall of a modular building unit being pulled against the side wall of another modular building unit via pre-embedded devices and post-installed cable devices (the modular building unit is shown in part, with only its side wall shown). Figure 17 yes Figure 16 Sectional view at PP.

[0019] Figure label: 1-Embedded device; 11-First embedded part; 111-Connecting groove; A-Enlarged opening; B-Length of enlarged opening; 112-Groove surface; W-Overlap width; 12-Second embedded part; G-Spacing of adjacent groups of embedded steel bars; 2- Rear cable insertion device; 21- Frame device; 211- First side frame; C- First reinforcing bar; 212- Second side frame; D- Second reinforcing bar; 213- Top frame; E- Third reinforcing bar; 214- Connecting reinforcing bar; 22- Pull head device; 221- Pull ring; 222- Connecting plate; F1- First level vertical spacing; F2- Second level vertical spacing; F3- Third level vertical spacing; F0- Distance between the pull ring of the lowest pull head device and the bottom of the first side frame; 23- Cable; 3-Cable locking device; 31-First bolt; 311-Enlarged head; 32-First collar; 33-Second collar; 34-First nut; 35-Second nut; 4-Abutting device; 41-Third nut; 42-Second bolt; 5- Modular building unit; 51- Side wall; 6-Wrench; K - First enlarged view icon; L - Second enlarged view icon; M - Third enlarged view icon; N - Fourth enlarged view icon; PP - Sectional view symbol. Detailed Implementation

[0020] The following will provide a clear and complete description of the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the accompanying drawings indicate the same or similar parts.

[0021] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0022] Reference Figures 1 to 17A cable-stayed connection device for modular buildings includes a pre-embedded device 1 and a rear-inserted cable device 2. The pre-embedded device 1 is pre-embedded in the side wall 51 of the modular building unit 5. The pre-embedded device 1 includes a first pre-embedded part 11. The first pre-embedded part 11 is provided with a connecting groove 111 for connecting with the rear-inserted cable device 2. The rear-inserted cable device 2 includes a frame device 21, a pull head device 22, and a cable 23. The frame device 21 includes a first side frame 211 and a second side frame 212. The first side frame 211 and the second side frame 212 are respectively provided with a plurality of pull head devices 22. The first side frame 211 and the second side frame 212 are respectively used to be placed into the designated connecting groove 111. The cable 23 is used to connect the pull head devices 22 on the first side frame 211 and the pull head devices 22 on the second side frame 212.

[0023] Reference Figures 1 to 17 In one embodiment, the pre-embedded device 1 further includes a second pre-embedded part 12; the second pre-embedded part 12 is connected to the first pre-embedded part 11; the first pre-embedded part 11 and the second pre-embedded part 12 are together pre-embedded in the side wall 51 of the modular building unit 5.

[0024] Reference Figure 1 and Figure 2 In one embodiment, the first embedded part 11 is a channel steel; the channel steel is provided with the connecting groove 111 along its own length direction.

[0025] Reference Figures 1 to 17 In one embodiment, the top of the channel steel is provided with an enlarged opening A, which is used to facilitate the insertion of the first side frame 211 into the connecting slot 111 or to facilitate the insertion of the second side frame 212 into the connecting slot 111; the length B of the enlarged opening is less than or equal to 150mm.

[0026] Reference Figure 1 and Figure 2 In one embodiment, the second embedded part 12 is an embedded reinforcing bar; two embedded reinforcing bars are grouped together and fixed to the channel steel at a set spacing; the channel steel is provided with several groups of embedded reinforcing bars from top to bottom; when the modular building unit 5 is prefabricated in the factory, the channel steel and the embedded reinforcing bars are pre-embedded together in the side wall 51 of the modular building unit 5, effectively avoiding the impact of on-site openings on the interior decoration of the modular building unit 5; wherein, the channel steel and the embedded reinforcing bars can improve the crack resistance stiffness of the side wall 51 of the modular building unit 5. Preferably, the diameter of the embedded reinforcing bar is 8mm to 10mm.

[0027] Reference Figures 1 to 17In one embodiment, the first side frame 211 includes at least two first reinforcing bars C, which are arranged in parallel. The second side frame 212 includes at least two second reinforcing bars D, which are arranged in parallel. Preferably, the diameter of the first reinforcing bars C is the same as the diameter of the second reinforcing bars D; the first reinforcing bars C and the second reinforcing bars D need to have a certain rigidity, but at the same time, the rigidity of the reinforcing bars cannot be too large, so that the first reinforcing bars C and the second reinforcing bars D can undergo a small deformation when the pull head device 22 is tightened by the cable 23. The purpose is to prevent the first reinforcing bars C or the second reinforcing bars D from overly restricting the movement of the pull head device 22 in opposite directions. In this way, when the cable 23 is finally tightened, it is beneficial for the connecting plate 222 of the pull head device 22 to abut against the channel surface 112 of the channel steel. Therefore, preferably, the diameter of the first reinforcing bar C and the diameter of the second reinforcing bar D are 3mm to 4mm.

[0028] Reference Figures 1 to 17 In one embodiment, the frame device 21 further includes a top frame 213; the first side frame 211 is connected to the second side frame 212 via the top frame 213. The top frame 213 is composed of a plurality of third reinforcing bars E; one side of the top frame 213 is connected to the first side frame 211, and the other side of the top frame 213 is connected to the second side frame 212. Preferably, the diameter of the third reinforcing bars E is greater than the diameter of the first reinforcing bars C or the diameter of the third reinforcing bars E is greater than the diameter of the second reinforcing bars D; this design is beneficial to improving the rigidity of the top position of the frame device 21. Preferably, the diameter of the third reinforcing bars E is 10mm. The top frame 213 provides a stable structural foundation for the installation of the cable locking device 3.

[0029] Reference Figures 1 to 17 In one embodiment, the skeleton device 21 further includes a first connector; the first side frame 211 is connected to the second side frame 212 through the first connector.

[0030] Reference Figures 1 to 17In one embodiment, the first connector is a connecting steel bar 214; the connecting steel bar 214 is arc-shaped, one end of the connecting steel bar 214 is connected to the first side frame 211, and the other end of the connecting steel bar 214 is connected to the second side frame 212; the diameter of the connecting steel bar 214 is smaller than the diameter of the first steel bar C or the diameter of the connecting steel bar 214 is smaller than the diameter of the second steel bar D; the connecting steel bar 214 is arranged at intervals of 400mm to 600mm along the length direction of the first side frame 211 and the second side frame 212; the connecting steel bar 214 provides temporary shape support for the skeleton device, and at the same time, the connecting steel bar 214 is required not to excessively restrict the movement of the pull head devices 22 on the left and right sides of the skeleton device in opposite directions. Therefore, the connecting steel bar 214 needs to have a certain rigidity, but its rigidity cannot be too large. Preferably, the diameter of the connecting steel bar 214 is 2mm, which allows the connecting steel bar 214 to undergo a certain elastic deformation when the tension cable 23 is tightened later.

[0031] Reference Figures 1 to 17 In one embodiment, the diameter of the first reinforcing bar C is the same as the diameter of the second reinforcing bar D; the skeleton device 21 has three reinforcing bars with different diameters, such as the third reinforcing bar E, the first reinforcing bar C and the connecting reinforcing bar 214; the diameters of the reinforcing bars from largest to smallest are the third reinforcing bar E, the first reinforcing bar C and the connecting reinforcing bar 214.

[0032] Reference Figures 1 to 17 In one embodiment, the lower end of one side of the top frame 213 is welded and fixed to the connecting plate 222 of a pull head device 22, and the upper end of the first side frame 211 is welded and fixed to the connecting plate 222 of a pull head device 22. Thus, the lower end of one side of the top frame 213 and the upper end of the first side frame 211 are connected together through the common connecting plate 222.

[0033] The lower end of the other side of the top frame 213 is welded and fixed to the connecting plate 222 of a pull head device 22, and the upper end of the second side frame 212 is welded and fixed to the connecting plate 222 of a pull head device 22. Thus, the lower end of the other side of the top frame 213 is connected to the upper end of the second side frame 212 through the common connecting plate 222.

[0034] Reference Figures 1 to 17 In one embodiment, the pull head device 22 includes a pull ring 221 and a connecting plate 222; the pull ring 221 is disposed on the connecting plate 222; the connecting plate 222 is used to be disposed on the first side frame 211 or the second side frame 212; the pull ring 221 is used to connect with the pull cable 23.

[0035] In one embodiment, the connecting plate 222 is either a square plate or a round plate; the pull ring 221 is a steel pull ring or a pull ring made of steel wire rope.

[0036] Reference Figures 1 to 17 In one embodiment, the thickness of the connecting plate 222 is greater than the wall thickness of the channel steel.

[0037] Reference Figures 1 to 17 In one embodiment, a cable tie device for modular buildings further includes a cable locking device 3; the cable locking device 3 is disposed on the frame device 21 (e.g., disposed on the top frame 213), one end of the cable 23 is connected to the cable locking device 3, and the cable locking device 3 is used to lock the cable 23.

[0038] Reference Figures 1 to 17 In one embodiment, the cable locking device 3 includes a first bolt 31, a first collar 32, a second collar 33, and a first nut 34. The first bolt 31 is configured to pass through the first collar 32 and the second collar 33, and the first collar 32 and the second collar 33 maintain a set distance. The bolt portion between the first collar 32 and the second collar 33 is used to connect with the cable 23. The first collar 32 and the second collar 33 are respectively used to fix on the frame device 21 (e.g., fixed on the top frame 213). One end of the first bolt 31 is provided with a threaded portion. The first nut 34 is used to connect with the threaded portion.

[0039] Reference Figures 1 to 17 In one embodiment, the diameter of the first collar 32 is slightly larger than the diameter of the shank of the first bolt 31; the diameter of the second collar 33 is also slightly larger than the diameter of the shank of the first bolt 31; after the shank of the first bolt 31 passes through the first collar 32 and the second collar 33, (without being locked) the first bolt 31 can be rotated and adjusted relative to the first collar 32 and the second collar 33. The first collar 32 and the second collar 33 are welded and fixed to the top frame 213, preferably by perimeter welding.

[0040] Reference Figures 1 to 17 In one embodiment, the cable locking device 3 further includes a second nut 35; the second nut 35 is used to connect with the threaded portion, and after the second nut 35 is set on the first bolt 31, the second nut 35 is located after the first nut 34; the first nut 34 and the second nut 35 can be adjusted by a wrench of a certain type (wherein the wrench can be found in the prior art).

[0041] Reference Figures 1 to 17 Preferably, the first nut 34 is a through-hole nut with internal threads; the second nut 35 is a non-through-hole nut with internal threads.

[0042] Reference Figures 1 to 17 In one embodiment, the top of the cable 23 is wrapped around the shank of the first bolt 31. The second nut 35 is rotated by an external tool such as a wrench 6. The rotation of the second nut 35 causes the first bolt 31 to rotate, which in turn causes the cable 23 to tighten. After the cable 23 is fully tightened, the first nut 34 is turned by a wrench of another type, so that the first nut 34 is pressed against the second collar 33 and the enlarged head 311 at one end of the first bolt 31 is pressed against the first collar 32, forming an effective frictional locking force, thereby locking the cable 23 and forming an effective cable 23 tension effect. Reference Figures 1 to 17 In one embodiment, after the cable locking device 3 is fixed to the top frame 213, the angle between the first bolt 31 and the horizontal plane is 0° to 180°. Figure 5 and Figure 14 As shown, this is one embodiment after the first bolt 31 is installed. The first bolt 31 forms an acute angle with the horizontal plane.

[0043] Reference Figures 1 to 17 In one embodiment, the first side frame 211 is provided with a plurality of pull head devices 22 from top to bottom; the second side frame 212 is provided with a plurality of pull head devices 22 from top to bottom; preferably, the lowest pull head device 22 on the first side frame 211 and the lowest pull head device 22 on the second side frame 212 are provided at the same height; preferably, the pull ring 221 of the lowest pull head device 22 on the first side frame 211 is 100mm to 300mm from the bottom of the first side frame 211 (in conjunction with...). Figure 5 (For understanding F0 in the text), similarly, the pull ring 221 of the lowest pull head device 22 on the second side frame 212 is 100mm to 300mm from the bottom of the second side frame 212; the remaining pull head devices 22 on the first side frame 211 are staggered in height from the remaining pull head devices 22 on the second side frame 212; the lower end of the pull cable 23 is fixed to the lowest pull head device 22, and then the pull cable 23 is arranged in a "Z" shape from bottom to top, passing through the pull head devices 22 on the left and right sides of the frame device 21 in sequence, and finally, the top end of the pull cable 23 is wrapped around the rod of the first bolt 31; wherein, by adjusting the rotation of the first screw 31, the pull cable 23 can be tightened or loosened; and the pull head device 22 can be tightened or loosened through the pull cable 23.

[0044] Reference Figures 1 to 17 In one embodiment, the vertical spacing of the plurality of pull head devices 22 on the first side frame 211 is determined according to the actual situation; the vertical spacing of the plurality of pull head devices 22 on the second side frame 212 is determined according to the actual situation; the smaller the vertical spacing of the pull head devices 22, the smaller the angle between the cable 23 at the position of the pull ring 221 of the pull head device 22 and the horizontal plane; the smaller the angle, the greater the pulling force formed.

[0045] Because the lateral pressure of the concrete at the lower end is greater than that at the upper end when pouring concrete between the side walls 51 of the modular building unit 5, the vertical spacing of the pull-head devices 22 at the lower end is relatively small. Specifically, the pull-head devices 22 on the first side frame 211 are designed with 2 to 4 levels of vertical spacing from bottom to top. The vertical spacing of the pull-head devices 22 increases from bottom to top, and the vertical spacing can be 300mm to 600mm depending on the number of levels. Figure 5 To understand this, the first-level vertical spacing F1, the second-level vertical spacing F2, and the third-level vertical spacing F3 can be 300mm to 600mm, and the first-level vertical spacing F1 is smaller than the second-level vertical spacing F2, and the second-level vertical spacing F2 is smaller than the third-level vertical spacing F3. Similarly, the pull head device 22 on the second side frame 212 is designed with 2 to 4 levels of vertical spacing from bottom to top. The vertical spacing of the pull head device 22 increases from bottom to top, and the vertical spacing can be 300mm to 600mm depending on the number of levels.

[0046] Reference Figures 1 to 17 In one embodiment, the channel steel is arranged with several groups of pre-embedded reinforcing bars from top to bottom; each group of pre-embedded reinforcing bars is arranged at equal intervals; preferably, the spacing G between adjacent groups of pre-embedded reinforcing bars is taken as the smallest vertical spacing of the pull head device 22, such as "the spacing G between adjacent groups of pre-embedded reinforcing bars" taking the first-level vertical spacing F1 as the spacing (i.e., G=F1). Wherein, combined with Figure 1 To understand this, the spacing G between adjacent groups of pre-embedded steel bars refers to the vertical distance from the midpoint of the two pre-embedded steel bars in one group to the midpoint of the two pre-embedded steel bars in another group.

[0047] Reference Figures 1 to 17 In one embodiment, the cable 23 is a steel wire rope; preferably, the cable 23 is a high-strength steel wire rope (such as a steel wire rope with a tensile strength of at least 1960 MPa).

[0048] Reference Figures 1 to 17In one embodiment, after the first side frame 211 with the pull head device 22 is inserted into the corresponding connecting groove 111, the plate surface of the connecting plate 222 and the groove surface 112 of the channel steel should have sufficient contact surface. Preferably, the overlap width W between the contact surface of one side of the connecting plate 222 and the groove surface 112 should not be less than 5mm (in conjunction with...). Figure 6 (To understand).

[0049] After the second side frame 212 with the pull head device 22 is inserted into the corresponding connecting groove 111, the plate surface of the connecting plate 222 and the groove surface 112 of the channel steel should have sufficient contact surface. Preferably, the overlap width W between the contact surface of one side of the connecting plate 222 and the groove surface 112 should not be less than 5mm (in conjunction with...). Figure 6 (To understand).

[0050] Reference Figures 1 to 17 In one embodiment, a cable tie device for modular building further includes a top-mounting device 4, one end of which abuts against the side wall 51 (top) of a modular building unit 5, and the other end of which abuts against the side wall 51 (top) of another modular building unit 5.

[0051] Reference Figures 1 to 17 In one embodiment, the top-mounting device 4 includes a third nut 41 and a second bolt 42; the third nut 41 has a set length; the second bolt 42 is threadedly connected to the third nut 41; one end of the third nut 41 abuts against the side wall 51 (top) of a modular building unit 5, and one end of the second bolt 42 abuts against the side wall 51 (top) of another modular building unit 5.

[0052] Since the top of the side wall 51 of the modular building unit 5 tends to move inward towards the middle during the tightening of the cable 23, the present invention requires the top-adjusting device 4 to be placed between the side walls 51 of the two modular building units 5 before tightening the cable 23, in order to prevent the top of the side wall 51 of the modular building unit 5 from shifting.

[0053] In one embodiment, the modular building unit 5 of the present invention is a concrete modular building unit, which is prefabricated in a factory and then transported to the site for installation. The embedded device 1 of the present invention is manufactured together with the modular building unit 5 during factory prefabrication, avoiding the need for drilling holes in the side walls during on-site installation to tie the side walls, thus preventing damage to the interior of the modular building unit and affecting the decoration. The cable tie device of the present invention can achieve the tie of the side walls 51 of the modular building unit 5 without affecting the interior of the modular building unit 5 and without impacting the interior decoration of the modular building unit 5.

[0054] Another objective of this invention is to provide a construction method for a cable-stayed connection device, thereby reducing the installation difficulty of the novel cable-stayed connection device and improving its construction efficiency.

[0055] Reference Figures 1 to 17 A method for constructing a cable-stayed tie device, based on the aforementioned cable-stayed tie device for modular buildings, includes the following steps: S1. The pre-embedded device 1 is pre-embedded in the side wall 51 of the modular building unit 5 (in the factory) to ensure that the connecting groove 111 of the first pre-embedded part 11 can be connected to the subsequent rear-inserted cable device 2. The rear-insertion cable device 2 is manufactured (in the factory) so that the cable 23 initially connects the pull head device 22 on the first side frame 211 and the pull head device 22 on the second side frame 212 together; S2. Hoist several modular building units 5 to the set installation position (on site), so that the side walls 51 of two opposite modular building units 5 maintain a set distance, and the connecting grooves 111 on the side walls 51 of the two opposite modular building units 5 face each other. S3. Insert the first side frame 211 and the second side frame 212 (on-site) into the connecting slots 111 that face each other. S4. A top-mounting device 4 is installed between the side walls 51 of the two modular building units 5, such that one end of the top-mounting device 4 abuts against the side wall 51 (top) of one modular building unit 5, and the other end abuts against the side wall 51 (top) of the other modular building unit 5. S5. Adjust the cable 23 so that the cable 23 pulls the pull head device 22 on the first side frame 211 and the pull head device 22 on the second side frame 212 together. Then, fix one end of the cable 23. S6. Complete the tensioning between the side wall 51 of one modular building unit 5 and the side wall 51 of another opposite modular building unit 5. Then, inject concrete (i.e., post-cast concrete) between the two modular building units 5 so that the side walls of the two modular building units 5 are combined with the concrete in the middle to form a complete shear wall.

[0056] In one embodiment, step S5 further includes the following steps: S51. After confirming that the upper end of the cable 23 is wrapped around the rod of the first bolt 31, the second nut 35 is turned with a wrench 6. The rotation of the second nut 35 causes the first bolt 31 to rotate, and the rotation of the first bolt 31 causes the cable 23 to tighten. The tightening of the cable 23 pulls the pull head device 22 on the first side frame 211 and the pull head device 22 on the second side frame 212 together. S52. Using a wrench of another type, the first nut 34 is tightened, causing the first nut 34 to press against the second collar 33 and the enlarged head 311 of the first bolt 31 to press against the first collar 32, thereby forming an effective frictional locking force, thus fixing the upper end of the cable 23 and forming an effective cable tensioning effect.

[0057] Other aspects of the cable tie device and construction method for modular buildings described in this invention can be found in the prior art and will not be repeated here.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cable-stayed connection device for modular buildings, characterized in that, The system includes a pre-embedded device and a rear-inserted cable device. The pre-embedded device is pre-installed in the side wall of the modular building unit. The pre-embedded device includes a first pre-embedded component. The first pre-embedded component has a connecting groove for connecting with the rear-inserted cable device. The rear-inserted cable device includes a frame device, a pull head device, and a cable. The frame device includes a first side frame and a second side frame. The first side frame and the second side frame are respectively provided with a plurality of pull head devices. The first side frame and the second side frame are respectively used to be placed into the designated connecting groove. The cable is used to connect the pull head device on the first side frame and the pull head device on the second side frame.

2. The cable tie device for modular buildings according to claim 1, characterized in that, The pre-embedded device further includes a second pre-embedded component; the second pre-embedded component is connected to the first pre-embedded component; the first pre-embedded component and the second pre-embedded component are together pre-embedded in the side wall of the modular building unit.

3. A cable-stayed tie rod for modular buildings according to claim 1, characterized in that, The frame device also includes a top frame; the first side frame is connected to the second side frame through the top frame.

4. A cable-stayed tie rod for modular buildings according to claim 1, characterized in that, The frame device further includes a first connector; the first side frame is connected to the second side frame through the first connector.

5. A cable-stayed tie rod for modular buildings according to claim 1, characterized in that, The pull head device includes a pull ring and a connecting plate; the pull ring is disposed on the connecting plate; the connecting plate is used to be disposed on the first side frame or the second side frame; the pull ring is used to connect with the pull cable.

6. A cable tie device for modular buildings according to claim 1, characterized in that, It also includes a cable locking device; the cable locking device is disposed on the frame device, one end of the cable is connected to the cable locking device, and the cable locking device is used to lock the cable.

7. A cable tie device for modular buildings according to claim 6, characterized in that, The cable locking device includes a first bolt, a first collar, a second collar, and a first nut; the first bolt is configured to pass through the first collar and the second collar, the first collar and the second collar maintain a set distance, the bolt portion between the first collar and the second collar is used to connect with the cable, and the first collar and the second collar are respectively used to fix to the frame device; one end of the first bolt is provided with a threaded portion; the first nut is used to connect with the threaded portion.

8. A cable tie device for modular buildings according to any one of claims 1 to 7, characterized in that, It also includes a top-mounting device, one end of which abuts against the side wall of a modular building unit, and the other end of which abuts against the side wall of another modular building unit.

9. A cable tie device for modular buildings according to claim 8, characterized in that, The top-mounting device includes a third nut and a second bolt; the third nut has a set length; the second bolt is threadedly connected to the third nut; one end of the third nut abuts against the side wall of a modular building unit, and one end of the second bolt abuts against the side wall of another modular building unit.

10. A method for constructing a cable-stayed tie device, based on a cable-stayed tie device for modular buildings as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. The pre-embedded device is pre-embedded in the side wall of the modular building unit to ensure that the connecting groove of the first pre-embedded part can be connected to the subsequent rear-inserted cable device. The rear-insertion cable device is manufactured so that the cable initially connects the pull head device on the first side frame and the pull head device on the second side frame together; S2. Hoist several modular building units to the set installation position, so that the side walls of two opposite modular building units maintain a set distance, and the connecting grooves on the side walls of the two opposite modular building units face each other. S3. Insert the first side frame and the second side frame into the connecting slots that face each other, respectively; S4. Install a top-fitting device between the side walls of two modular building units, so that one end of the top-fitting device abuts against the side wall of one modular building unit and the other end abuts against the side wall of the other modular building unit. S5. Adjust the cable to tighten and connect the pull head device on the first side frame and the pull head device on the second side frame together, and then fix one end of the cable. S6. Complete the tensioning between the side wall of one modular building unit and the side wall of another opposite modular building unit.

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