A modular hybrid construction system for large public buildings and a method of construction thereof

Abstract

The application relates to the technical field of large public building construction, in particular to a large public building module mixed construction system and a construction method thereof. The construction system comprises a pre-preparation area, a lifting area, a hoisting and sliding area and an installation area. The pre-preparation area is used for transferring parts and installing the parts into a roof truss. The roof truss is transferred to the lifting area and lifted from the ground to the hoisting and sliding area on the top floor. The installation area is provided with a first carrying vehicle and a first crane. After the roof truss is hoisted to the edge of the hoisting and sliding area, the roof truss is carried to the installation area by a first carrying vehicle group, and a supporting column is hoisted by the first crane. The lower end of the supporting column is fixedly connected with the ground of the installation area, and the upper end is connected with the roof truss, so that vertical support of the roof truss is realized.

Description

Technical Field

[0001] This invention relates to the field of construction technology for large public buildings, and in particular to a modular hybrid construction system for large public buildings and its construction method. Background Technology

[0002] In areas with exceptionally complex structures, extremely limited space, or special requirements for construction sequence (such as adjacent to existing buildings or areas with abrupt changes in structural height), traditional integral hoisting or sliding methods are difficult to implement. These areas often require a flexible construction strategy of "dispersed assembly first, then integration, and finally transportation." However, how to efficiently disassemble modules at high altitudes and safely transport the disassembled modules to the next installation point, while simultaneously achieving rapid turnover of construction equipment, is a global challenge for such projects. Moreover, in the modular construction of large public buildings, there are always parts of the roof that cannot or are inconvenient to construct using modular methods. Therefore, this patent proposes a "module + disassembled assembly" construction method. Summary of the Invention

[0003] The purpose of this invention is to provide a modular hybrid construction system for large public buildings and its construction method, so as to solve at least one technical problem existing in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides a modular hybrid construction system for large public buildings, including a pre-preparation area, a lifting area, a hoisting and sliding area, and an installation area; The pre-preparation area is used to transfer parts and install them into roof trusses. The roof truss is transferred to the lifting area and then lifted from ground level to the top hoisting and sliding area; The installation area is equipped with a first transport vehicle and a first crane; After the roof truss is hoisted to the edge of the hoisting and sliding area, it is transported to the installation area by the first transport vehicle group, and the support column is hoisted by the first crane; The lower end of the support column is fixedly connected to the ground of the installation area, and the upper end is connected to the roof truss to achieve vertical support for the roof truss.

[0005] Furthermore, the pre-preparation area is equipped with a first guide rail, a first gantry, a second crane, and a second transport vehicle group; The first gantry reciprocates along the first guide rail to lift parts from the outside to a designated position in the pre-preparation area and to lift the prefabricated roof truss onto the second transport vehicle. The second crane is used to install the parts to form the roof truss; The first gantry lifts the installed roof truss, the second transport vehicle moves to directly under the roof truss, and after the first gantry lowers the roof truss onto the bearing surface of the second transport vehicle, the roof truss is transferred to the lifting area.

[0006] Furthermore, the lifting area is provided with a second guide rail, a second hanger, and a lifting sliding frame; The second hanger reciprocates along the second guide rail to lift and raise the roof truss transferred from the second transport vehicle group, and then moves it above the raised sliding frame before smoothly lowering the roof truss onto the raised sliding frame. The raised sliding frame is used to slide the roof truss horizontally to the hoisting sliding area.

[0007] Furthermore, the hoisting sliding area is equipped with a third guide rail and a third hanger; The third gantry reciprocates along the third guide rail to lift the roof truss transported by the lifting sliding frame, and then precisely lifts it above the first and second transport vehicle groups before lowering it to place the roof truss on the first transport vehicle group.

[0008] Furthermore, a reserved gap is provided on the raised sliding frame above the third guide rail to provide space for the passage of the third hanger; It also includes short lifting tracks; The lifting short rail can be raised and lowered in the vertical direction, and is connected to the lifting sliding frame and the third guide rail at its top and bottom points respectively. A reserved gap of the same length is provided at the intersection of the projection of the third sliding platform and the third guide rail. When the lifting short rail is located at the lifting sliding frame and the third guide rail, it matches the corresponding reserved gap, thereby temporarily connecting the third sliding platform and the third guide rail.

[0009] Furthermore, a positioning groove is provided on the ground of the installation area; The bottom of the support column is embedded in the positioning groove and fixedly connected.

[0010] Furthermore, the roof truss is provided with through holes at the positions corresponding to the support columns, allowing the support columns to pass through the roof truss from top to bottom and be installed on the ground.

[0011] Furthermore, the roof truss is provided with through holes at the positions corresponding to the support columns, for the support columns to pass through, so that the roof truss can be fitted onto the support columns from top to bottom.

[0012] Furthermore, the support column and the roof truss are provided with bidirectional temporary connection pairs for temporarily connecting the support column and the roof truss.

[0013] On the other hand, this application also discloses a modular hybrid construction system for large public buildings, including the following steps: S1: The first hanger transports the part to the designated position along the first guide rail; The second crane lifts and assembles the parts into a roof truss; The first gantry lifts the assembled roof truss and places it on the second transport vehicle; S2: The second transport vehicle transports the roof truss from the pre-preparation area to the end of the lifting area away from the hoisting and sliding area; The second hanger lifts the roof truss and slides it along the second guide rail onto the raised sliding frame; The roof truss slides along the raised sliding frame toward the installation platform. At this time, the lifting short rail rises to the raised sliding frame and matches the reserved gap of the raised sliding frame. S3: After passing through the short lifting track, the roof truss enters the hoisting and sliding area. The short lifting track descends to the third guide rail, matching the reserved gap of the third guide rail. The third gantry lifts the roof truss and slides it along the third guide rail to the edge of the lifting and sliding area, and places the roof truss on the first transport vehicle; S4: The first transport vehicle transports the roof truss to the designated location in the installation area, and the first crane lifts the support column from above through the through hole of the roof truss and lowers the bottom of the support column into the positioning groove; S5: The first crane lifts the roof truss upwards. When the roof truss reaches the designated height, the bidirectional temporary connecting pair fixes the support column to the roof truss. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the prefabricated roof truss in the preparation area and its transportation to the lifting area of ​​the large public building modular hybrid construction system disclosed in this application; Figure 2 This is a three-dimensional structural diagram of the large public building modular hybrid construction system disclosed in this application, which transports the roof truss via a raised sliding frame; Figure 3 This is a three-dimensional structural diagram of the large public building modular hybrid construction system disclosed in this application, which transports the roof truss to the hoisting and sliding area by raising and sliding the frame. Figure 4 This is a three-dimensional structural diagram of the large public building modular hybrid construction system disclosed in this application, which transports the roof truss via a third hanger. Figure 5 This is a three-dimensional structural diagram of the large public building modular hybrid construction system disclosed in this application, in which the roof truss is transported to a designated location in the installation area by a first transport vehicle group. Figure 6 This is a three-dimensional structural diagram of the large public building modular hybrid construction system disclosed in this application, showing the installation of support columns by a first crane; Figure 7 A three-dimensional structural diagram of the large public building modular hybrid construction system disclosed in this application after the roof truss installation is completed; Figure 8 This is a three-dimensional structural diagram of the first crane installing the roof truss onto the support column from top to bottom. Figure 9 A partial cross-sectional view of the lifting short rail and rotating lifting mechanism in their lowest position; Figure 10 A partial sectional view of the lifting short track and rotating lifting mechanism in their highest position; Figure 11 A schematic diagram of the planar structure of the temporary locking structure on the support column; Figure 12 This is a cross-sectional view of the ball joint and the sliding guide block below when the roof truss moves from bottom to top. Figure 13 In order to be in Figure 12 A cross-sectional view of the sliding guide block below abutting against the fixed guide block assembly below; Figure 14 In order to be in Figure 13 A cross-sectional view of the roof trusses continuing to rise from the foundation; Figure 15 This is a cross-sectional view of the ball joint about to pass the lower locking arm, based on the 14th step. Figure 16 A cross-sectional view of the temporary locking structure and the flexible locking pin structure after installation; Figure 17 This is a cross-sectional view of the ball joint and the upper sliding guide block when the roof truss moves from top to bottom. Figure 18 A cross-sectional view of the process of removing the elastic locking pin structure from the temporary locking structure after disassembling the upper locking arm.

[0016] Figure label: 1-Preparation area; 2-Lifting area; 3-Hoisting and sliding area; 4-Installation area; 5-Roof truss; 6-First transport vehicle; 7-First crane; 8-Support column; 9-First guide rail; 10-First gantry; 11-Second crane; 12-Second transport vehicle group; 13-Second guide rail; 14-Second gantry; 15-Lifting and sliding frame; 16-Third guide rail; 17-Third gantry; 18-Lifting short rail; 21-Rotating lifting mechanism; 22-Embedded cylinder; 23-Hydraulic cylinder; 24-Support rod; 25-Conveying channel; 26- 27-Conveying pipe; 28-Coupled rotation area; 29-Guide rod; 30-Guide limiting plate; 31-Temporary locking structure; 32-Elastic locking pin structure; 33-Clamping area; 34-Upper sliding guide block; 35-Lower sliding guide block; 36-Upper slide rail; 37-Lower slide rail; 38-Upper fixed guide block assembly; 39-Lower fixed guide block assembly; 40-Upper locking arm; 41-Lower locking arm; 42-Fastener; 43-Outer shell; 44-Ball head post; 45-Compression spring; 46-Annular boss; 47-Limiting ring. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed by the present invention to further explain the specific content of the invention, and these settings can be combined or used in conjunction with each other.

[0021] The present invention will be further explained below with reference to specific embodiments.

[0022] Example 1 like Figure 1-8 As shown, this embodiment provides a modular hybrid construction system for large public buildings, including a pre-preparation area 1, a lifting area 2, a hoisting and sliding area 3, and an installation area 4; The pre-preparation area 1 is used to transfer parts and install them into the roof truss 5; After being transferred to the lifting area 2, the roof truss 5 is lifted from ground level to the top hoisting and sliding area 3; The installation area 4 is equipped with a first transport vehicle 6 and a first crane 7; After the roof truss 5 is hoisted to the edge of the hoisting and sliding area 3, it is transported to the installation area 4 by the first transport vehicle group 6, and the support column 8 is hoisted by the first crane 7; The lower end of the support column 8 is fixedly connected to the ground of the installation area 4, and the upper end is connected to the roof truss 5, thereby providing vertical support for the roof truss 5.

[0023] As a further embodiment of this example, the pre-preparation area 1 is provided with a first guide rail 9, a first gantry 10, a second crane 11, and a second transport vehicle group 12; The first gantry 10 reciprocates along the first guide rail 9 to lift parts from the outside to a designated position in the pre-preparation area 1 and to lift the prefabricated roof truss 5 onto the second transport vehicle group 12. The second crane 11 is used to install the parts to form the roof truss 5; The first gantry 10 lifts the installed roof truss 5, and the second transport vehicle group 12 moves to directly below the roof truss 5. After the first gantry 10 lowers the roof truss 5 onto the bearing surface of the second transport vehicle group 12, the roof truss 5 is transferred to the lifting area 2.

[0024] As a further embodiment of this embodiment, the lifting area 2 is provided with a second guide rail 13, a second hanger 14, and a lifting sliding frame 15; The second gantry 14 reciprocates along the second guide rail 13 to lift and raise the roof truss 5 transferred from the second transport vehicle group 12, and then moves it above the lifting sliding frame 15 before smoothly lowering the roof truss 5 onto the lifting sliding frame 15. The lifting and sliding frame 15 is used to slide the roof truss 5 horizontally to the hoisting and sliding area 3.

[0025] As a further embodiment of this embodiment, the hoisting sliding area 3 is provided with a third guide rail 16 and a third hanger 17; The third gantry 17 reciprocates along the third guide rail 16 to lift the roof truss 5 delivered by the lifting sliding frame 15, and then accurately lifts it above the first and second transport vehicle groups 12 before lowering it to place the roof truss 5 on the first transport vehicle group 6.

[0026] As a further embodiment of this embodiment, a reserved gap is provided on the raised sliding frame 15 above the third guide rail 16 to reserve space for the passage of the third hanger 17; It also includes 18 short lifting rails; The lifting short rail can be raised and lowered in the vertical direction, and is connected to the lifting sliding frame 15 and the third guide rail 16 at its top and bottom ends, respectively. At the intersection of the projections of the third sliding platform and the third guide rail 16, there is a reserved gap of the same length. When the lifting short rail is located at the lifting sliding frame 15 and the third guide rail 16, it matches the corresponding reserved gap, thereby temporarily connecting the third sliding platform and the third guide rail 16.

[0027] This application addresses the pain points of low hoisting efficiency, poor precision, and high reliance on manual labor in the construction of large public buildings. Through modular partitioning collaboration and dynamic track coupling mechanism, a highly automated and seamless connection of the entire process is achieved. Specifically, the roof truss 5 is first prefabricated in the off-site preparation area 1. During this process, the parts are transported to the designated work position by the first crane 10 and precisely assembled by the second crane 11. After being lifted by the first crane 10, it is placed on the second transport vehicle group 12 and transferred to the lifting area 2.

[0028] The first transport vehicle group 6 and the second transport vehicle group 12 in this application are both prior art, which can carry large workpieces for transfer and also have lifting functions. This application does not make any further limitations here.

[0029] In the lifting zone 2, the truss is lifted to the top floor through the coordinated action of the second hanger 14 and the lifting sliding frame 15. Then, the roof truss 5 is precisely transferred to the first transport vehicle 6 group parked at the end edge through the third hanger 17 of the lifting sliding zone 3. The first transport vehicle 6 group carries and transports it to the designated installation location.

[0030] As a further embodiment of this embodiment, a positioning groove is provided on the ground of the installation area 4; The bottom of the support column 8 is embedded in the positioning groove and fixedly connected.

[0031] As a further embodiment of this example, the roof truss 5 is provided with a through hole at the position corresponding to the support column 8, so that the support column 8 can pass through the roof truss 5 from top to bottom and be installed on the ground.

[0032] As a further embodiment of this example, the roof truss 5 is provided with a through hole at the position corresponding to the support column 8, for the support column 8 to pass through, so that the roof truss 5 can be fitted onto the support column 8 from top to bottom.

[0033] As a further embodiment of this invention, the support column 8 and the roof truss 5 are provided with bidirectional temporary connection pairs for temporarily connecting the support column 8 and the roof truss 5.

[0034] After the roof truss 5 is transported to the designated location by the first transport vehicle 6, the first crane 7 lifts the installation column, passes the bottom of the installation column through the through hole of the roof truss 5, and continues to descend until the bottom of the installation column is precisely engaged with the positioning groove, completing the vertical positioning. Then, the first crane 7 continues to lift the other three installation columns. After the installation of the four installation columns is completed, the hook of the first crane 7 releases the installation column and connects it to the roof truss 5, and then lifts the roof truss 5 upward. When the roof truss 5 reaches the predetermined height, the bidirectional temporary connecting pair automatically locks, forming a rigid temporary connection between the roof truss 5 and the installation column. The permanent connection will then be completed using other existing technical means.

[0035] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The technical solution of this application moves the assembly work of the roof truss 5, which was originally carried out in a scattered manner at high altitude, to the ground prefabrication area, realizing the separation of the "ground construction and air assembly" process. Each functional area operates in parallel, and the prefabrication, lifting, sliding and installation do not interfere with each other, which greatly reduces the critical path construction period. In particular, through the coordinated cooperation of multiple sets of hangers and guide rails, the entire chain flow of the truss from parts to placement realizes mechanized continuous operation, bidding farewell to the inefficient mode of repeated disassembly and assembly and splicing one by one in the traditional way.

[0036] (2) The technical solution of this application introduces a dual constraint structure of ground positioning groove and truss through hole in the installation area 4, so that the placement of the support column 8 no longer depends on the visual judgment of the workers, but achieves sub-millimeter alignment through physical embedding. At the same time, the bidirectional temporary connection pair automatically locks after the truss is lifted to the predetermined height, ensuring a rigid transition between the truss and the column and avoiding the risk of misalignment caused by shaking due to manual operation. This three-step positioning logic of "drilling first, then fitting, and then locking" fundamentally solves the common industry problem of difficulty in aligning large components when docking at high altitude.

[0037] (3) Traditional roof truss construction requires a large number of workers to perform welding, bolt tightening and other operations at high altitudes, which poses significant safety hazards. This solution transfers most of the assembly work to the ground. During the high-altitude stage, only a crane is needed for overall transportation and column installation, which greatly reduces the number of workers and their exposure time. In particular, the design of the lifting short rails and the reserved gaps allows the hangers to seamlessly switch between rails at different heights, avoiding the dangerous operation of manual rail docking at high altitudes.

[0038] (4) The four functional areas are loosely coupled through transport vehicles and guide rail systems, allowing each area to adjust its pace independently or work together as needed. When the building size or site conditions change, the number of transport vehicles can be increased or decreased or the length of the guide rails can be adjusted to adapt to the changes without fundamentally altering the overall process. This modular architecture also facilitates reuse across different projects, reducing equipment amortization costs.

[0039] (5) Throughout the entire process, the hoisting of parts, the assembly and transfer of trusses, and the installation and locking of columns are all automatically completed by the mechanical system according to the preset path, reducing the reliance on the operator's experience from a "decisive factor" to a "monitoring role". This has significant practical value in the context of the current shortage of skilled workers in the construction industry.

[0040] Example 2 like Figure 1-7 As shown in the figure, this embodiment provides a construction method for a large-scale public building modular hybrid construction system, including the following steps: S1: The first hanger 10 transports the part to the designated position along the first guide rail 9; The second crane 11 hoists and assembles the parts into the roof truss 5; The first gantry 10 lifts the assembled roof truss 5 and places it on the second transport vehicle; S2: The second transport vehicle transports the roof truss 5 from the pre-preparation area 1 to the end of the lifting area 2 away from the hoisting and sliding area 3; The second hanger 14 lifts the roof truss 5 and slides it along the second guide rail 13 onto the raised sliding frame 15; The roof truss 5 slides along the raised sliding frame 15 toward the installation platform. At this time, the lifting short rail 18 rises to the raised sliding frame 15 and matches the reserved gap of the raised sliding frame 15. S3: After passing through the short lifting track 18, the roof truss 5 enters the hoisting and sliding area 3. The short lifting track 18 descends to the third guide rail 16, which matches the reserved gap of the third guide rail 16. The third gantry 17 lifts the roof truss 5 and slides it along the third guide rail 16 to the edge of the lifting and sliding area 3, and places the roof truss 5 on the first transport vehicle 6; S4: The first transport vehicle 6 transports the roof truss 5 to the designated position in the installation area 4, and the first crane 7 lifts the support column 8 through the through hole of the roof truss 5 from above, and lowers the bottom of the support column 8 into the positioning groove. S5: The first crane 7 lifts the roof truss 5 upwards. When the roof truss 5 reaches the designated height, the bidirectional temporary connecting pair fixes the support column 8 to the roof truss 5.

[0041] Example 3 like Figure 9-10 As shown, this embodiment provides a further refinement of the lifting short track 18 in Embodiment 1.

[0042] It also includes a rotary lifting mechanism 21 and an embedded cylinder 22; The embedded cylinder 22 is a columnar hollow cylinder structure and is vertically inserted into the ground; The rotary lifting mechanism 21 is located inside the embedded cylinder 22 and is arranged coaxially with the embedded cylinder 22, and moves along the axis of the embedded cylinder 22. The bottom of the lifting short track 18 is fixedly connected to the top of the rotating lifting mechanism 21, and rises and rotates synchronously with the rotating lifting mechanism 21.

[0043] As a further embodiment of this embodiment, the rotary lifting mechanism 21 includes a hydraulic cylinder 23 and a support rod 24; The bottom of the hydraulic cylinder 23 is fixed to the bottom of the embedded cylinder 22; The bottom end of the piston rod is rotatably connected to the top end of the support rod 24, and the top end of the piston rod is fixedly connected to the bottom of the lifting short track 18; The inner wall of the embedded cylinder 22 is provided with a spiral guide groove, and the outer periphery of the support rod 24 is provided with a guide protrusion that matches the spiral guide groove; When the guide protrusion abuts against the spiral guide groove and rises or falls, the support rod 24 drives the lifting short rail 18 to rotate synchronously and rise or fall.

[0044] As a further embodiment of this embodiment, a conveying channel 25 is provided inside the embedded cylinder 22. One end of the conveying channel 25 is opened on the inner side wall of the lower part of the embedded cylinder 22, and the other end extends to the upper cylinder wall of the embedded cylinder 22. The hydraulic cylinder 23 is provided with a conveying pipe 26. One end of the conveying pipe 26 is connected to the hydraulic cylinder 23, and the other end passes through the conveying channel 25 and extends out of the embedded cylinder 22. The hydraulic cylinder 23 presses in or out the medium from the outside through the delivery pipe 26, thereby driving the rotary lifting mechanism 21 to rise and fall.

[0045] As a further embodiment of this embodiment, the upper end of the embedded cylinder 22 is provided with a coupling rotation zone 27, and the spiral guide groove is provided in the coupling rotation zone 27.

[0046] As a further embodiment of this invention, it also includes a guide rod 28 and a guide limiting plate 29; The lower end of the guide rod 28 is fixedly mounted on the hydraulic cylinder 23, and the upper end is fixedly mounted on the lower end of the coupling rotation area 27. The guide limiting plate 29 is sleeved on the guide rod 28, and the lower end of the guide limiting plate 29 is fixedly connected to the output end of the hydraulic cylinder 23, while the upper end of the guide limiting plate 29 is fixedly and rotatably connected to the support rod 24.

[0047] In this embodiment, the synergistic effect of hydraulic drive and helical guidance precisely transforms linear motion into a composite action of "lifting and rotating", thereby accurately controlling the track attitude. At its highest and lowest points, it can be precisely matched with the corresponding track, ensuring that the track maintains mechanical continuity and motion synchronization during dynamic switching, significantly improving the stability and positioning accuracy of the project.

[0048] In addition, the lifting short rail 18 in this embodiment can be directly hoisted out and stored as a whole after being retracted. When used again, it only needs to be hoisted back into the pre-dug pit in the ground. The installation is convenient and the positioning is accurate, which greatly shortens the on-site assembly cycle.

[0049] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The mechanism ingeniously transforms the linear thrust of the hydraulic cylinder 23 into a coupled output of "rising + rotating" through the meshing relationship between the spiral groove and the guide protrusion. This means that when the short rail reaches the top or bottom and docks with other rails, not only is the height consistent, but the angle is also automatically aligned, without the need for manual secondary adjustment. Compared with the traditional approach of simply relying on lifting to dock and then manually adjusting the angle, this design eliminates docking deviation from the mechanical principle level, so that the two rails achieve a dual match of mechanics and geometry at the moment of docking.

[0050] (2) The telescopic cylinder is embedded below the ground as a whole, with only the end of the short rail exposed during operation. This does not occupy ground passage space or affect the operation of other equipment. More importantly, the entire mechanism can be lifted out of the ground as a whole unit and stored centrally when not in operation. It can then be directly lowered back into the pre-set pit for reuse during the next construction. This "plug-and-play" modular deployment method transforms the on-site assembly process from traditional piece-by-piece assembly to whole-machine placement, reducing assembly time by more than half.

[0051] (3) An additional constraint pair consisting of a guide rod 28 and a limiting plate is provided between the hydraulic cylinder 23 and the coupling rotation zone 27, so that the piston rod always moves along the axis during the extension and retraction process and will not wobble due to lateral force. This is especially important for the track docking of large components - even a slight tilt may cause the short rail to misalign with the target rail, and this limiting structure reduces this risk from "depending on the accuracy of operation" to "being guaranteed by the mechanical structure".

[0052] (4) The driving medium is led out through a channel on the inner side of the cylinder wall, rather than being hung on the outer wall of the cylinder. This avoids common problems such as the pipeline being stepped on, bumped, or tangled on the construction site, and also makes the entire device look neat and does not add any additional safety hazards. For frequently used engineering equipment, pipeline protection directly means a reduction in maintenance costs and an increase in availability.

[0053] Example 4 like Figure 11-18 As shown, this embodiment provides a further refinement of the bidirectional temporary connection pair in Embodiment 1.

[0054] The bidirectional temporary connection includes a temporary locking structure 30 provided on the support column 8 and an elastic locking structure 31 provided on the roof truss 5. The support column 8 is a rectangular cross-section column, and the temporary locking structure 30 is provided on the four sides of the support column 8. The through holes on the roof truss 5 are also rectangular in shape, and each of its four inner walls is provided with elastic latches that match the position of the temporary locking structure 30. The temporary locking structure 30 includes a guide area 32 and a locking area 33. When relative displacement occurs between the support column 8 and the roof truss 5, the elastic pin first slides along the guide area 32 and is compressed. When it reaches the locking area 33, it elastically resets and is locked.

[0055] In this application, during the construction of large public buildings, there may be two typical working conditions for the temporary connection between the support column 8 and the roof truss 5. One is that, as described in Examples 1 and 2, the support column 8 is installed vertically on the ground, and the roof truss 5 is hoisted into place from bottom to top; the other is that the roof truss 5 is hoisted into place from top to bottom after the support column 8 has been installed. Regardless of the working condition, the bidirectional temporary connection pair can achieve rapid, reliable, and direction-independent temporary consolidation through the adaptive sliding of the elastic pin in the guide area 32 and the instantaneous locking in the locking area 33, completely eliminating the cumbersome process of repeated hole drilling, tightening, and correction required by traditional bolt connections. In addition, this structure can also be quickly disassembled after the temporary installation is completed, which can be used to correct design modifications or construction errors after the temporary installation is completed, significantly improving the flexibility and fault tolerance of construction response.

[0056] As a further embodiment of this example, the temporary locking structure 30 includes an upper sliding guide block 34, a lower sliding guide block 35, an upper slide rail 36, a lower slide rail 37, an upper fixed guide block group 38, a lower fixed guide block group 39, an upper locking arm 40, and a lower locking arm 41. The upper sliding guide block 34 is slidably engaged with the upper slide rail 36, and the lower sliding guide block 35 is slidably engaged with the lower slide rail 37; The upper locking arm 40 is located between the upper fixed guide block groups 38, and the lower locking arm 41 is located between the lower fixed guide block groups 39; The upper sliding guide block 34 and the lower sliding guide block 35 are located above and below the upper fixed guide block group 38 and the lower fixed guide block group 39, respectively.

[0057] As a further embodiment of this example, the upper slide rail 36 and the lower slide rail 37 are coaxially arranged.

[0058] As a further embodiment of this example, both the upper fixed guide block group 38 and the lower fixed guide block group 39 are composed of two symmetrically arranged fixed guide blocks; The fixed guide block has an approximately right-angled triangular structure with an inwardly concave arc surface on its inclined surface.

[0059] As a further embodiment of this invention, both the upper sliding guide block 34 and the lower sliding guide block 35 are provided with concave arc-shaped surfaces, facing upwards and downwards respectively.

[0060] As a further embodiment of this example, the upper clamping arm 40 and the lower clamping arm 41 are fixedly connected to the support column 8 by fasteners 42.

[0061] As a further embodiment of this embodiment, the elastic locking pin structure 31 includes an outer shell 43, a ball head post 44, and a compression spring 45; The outer end of the ball-head post 44 is a smooth hemispherical structure, and the inner end is located in the inner cavity of the outer shell 43; The outer shell 43 is a columnar structure with an opening on one side, and the closed side is fixedly mounted on the roof truss 5. The opening end of the outer shell 43 is integrally provided with a limiting ring 47, and the side wall of the ball head column 44 is provided with an annular boss 46. One end of the compression spring 45 abuts against the inner bottom surface of the outer casing 43, and the other end abuts against the annular boss 46; The compression spring 45 is always in a compressed state, and its elastic force tends to make the annular boss 46 abut against the limiting ring 47, thereby keeping the ball head post 44 exposed to the maximum extent.

[0062] As a further embodiment of this example, the upper end of the upper slide rail 36 extends to the top of the support column 8 and the end is an open structure.

[0063] Specifically, the technical solution of this embodiment includes two modes: installation of the roof truss 5 from bottom to top and installation from top to bottom. In the installation from bottom to top mode, as follows... Figure 11-16 As shown, the support column 8 is positioned first. At this time, the lower sliding guide block 35 falls naturally to the bottom of the lower slide rail 37 under the action of gravity. As the roof truss 5 is lifted and moved upward, the ball end of the ball-head column 44 first contacts the lower sliding guide block 35 and pushes it to slide upward along the lower slide rail 37 until the lower sliding guide block 35 abuts against the lower fixed guide block group 39. At this time, the lower sliding guide block 35 can no longer move. As the roof truss 5 continues to move upward, the ball-head column 44 is compressed and retracts. The compression spring 45 further stores energy. At this time, the ball end of the ball-head column 44 moves along the arc surface of the lower sliding guide block 35. Finally, after passing the top of the lower sliding guide block 35 and the top of the lower locking arm 41 in sequence, it is locked into the gap between the lower fixed guide block group 39 and the upper fixed guide block group 38, completing the initial positioning. Although the ball joint column 44 can still slide along the concave arc surfaces of the lower fixed guide block group 39 and the upper fixed guide block group 38 when the roof truss 5 moves up and down, its movement is rigidly constrained when it abuts against the upper locking arm 40 or the lower locking arm 41, thus achieving a balance between dynamic stability and precise positioning. In this state, when vibrations occur at the construction site, the ball joint column 44 floats slightly under the elastic support of the compression spring 45, effectively absorbing impact energy and preventing structural damage caused by rigid collisions. Simultaneously, the overall stability is ensured by the limiting action of the upper locking arm 40 and the lower locking arm 41, achieving a protective mechanism of energy dissipation during small vibrations and limiting movement during large vibrations.

[0064] like Figure 17 As shown, the installation condition from top to bottom is similar to the above condition but in a different direction. When the roof truss 5 is lowered from top to bottom, the upper sliding guide block 34 naturally slides down to the bottom of the upper slide rail 36 under gravity, that is, the upper sliding guide block 34 contacts the upper fixed guide block group 38. Subsequently, the roof truss 5 continues to move down, and the ball end of the ball head column 44 first contacts the upper sliding guide block 34. Since the upper sliding guide block 34 is at its lowest position at this time, the ball head column 44 is forced to retract inward, and the compression spring 45 is further compressed to store energy. As the roof truss 5 continues to move down, the ball head column 44 slides along the arc surface of the upper sliding guide block 34, and finally passes the top of the upper sliding guide block 34 and the upper locking arm 40, and then gets into the gap between the upper fixed guide block group 38 and the lower fixed guide block group 39 to complete the temporary positioning.

[0065] like Figure 18As shown, if an installation error or design modification is found after temporary installation and the roof truss 5 needs to be dismantled, the upper clamping arm 40 is first removed, and then the roof truss 5 is hoisted upwards. The ball end of the ball-head column 44 moves upwards along the concave arc surface of the upper fixed guide block group 38. Since the upper clamping arm 40 has been removed, when the ball-head column 44 passes the upper fixed guide block group 38, its side wall abuts against the upper sliding guide block 34. As the roof truss 5 continues to move upwards, it drives the upper sliding guide block 34 to move. Finally, the upper sliding guide block 34 and the roof truss 5 are both separated from the support column 8, realizing a quick and non-destructive dismantling operation.

[0066] By adopting the above technical solution, the present invention has the following beneficial effects: (1) Traditional temporary consolidation relies on bolts to be aligned hole by hole. If the direction is reversed, the entire assembly must be dismantled and started over. This solution uses the combination of spherical contact and arc-shaped guide surface. No matter whether the component is dropped from above or lifted from below, the locking pin can automatically slide into the locking slot along the guide slope, achieving "installation from either side and locking no matter how it is installed". This feature eliminates the need to pre-determine the hoisting direction on the construction site, greatly reducing the complexity of the process arrangement.

[0067] (2) The sliding guide block in the locking structure automatically sinks to the bottom and positions itself under the action of gravity. After the ball head column 44 contacts the guide block, it is pressed back to store energy and then climbs along the arc surface to pass over the locking arm and enter the gap. Throughout the process, even if there is a deviation of several centimeters in the initial position, the guide area 32 can absorb it and finally lock in accurately. This "sliding first and then locking" mechanism is equivalent to adding an automatic correction insurance to the connection process, which relaxes the requirement for construction accuracy from the millimeter level to the centimeter level.

[0068] (3) The compression spring 45 keeps the ball head column 44 in a slightly floating state. When there is slight vibration at the construction site, the spring extends and retracts to absorb the impact energy and avoid stress concentration caused by rigid contact; when the displacement exceeds the threshold and touches the locking arm, the movement is rigidly blocked to prevent the component from slipping. This "soft and hard switching" protection logic is more fatigue resistant than a pure rigid connection and more reliable than a pure elastic connection.

[0069] (4) When installation deviations or design changes are found that require disassembly, simply remove the upper clamping arm 40, lift the component upwards, and the ball head column 44 will disengage along the arc surface and drive the sliding guide block upwards. The entire process does not involve cutting, hammering, or other destructive operations. Compared with the tedious process of traditional disassembly, which requires loosening, cleaning threads, and re-oiling, this solution greatly reduces the disassembly and assembly time.

[0070] (5) The front end of the locking pin adopts a hemispherical design, and the contact between it and the arc surface of the guide block is a point contact or a small area line contact, which greatly reduces the wear rate compared with planar friction. At the same time, the spring is always in a pre-compressed state, ensuring the maximum exposed ball head, avoiding the problem of spring failure or locking pin jamming due to long-term idleness, which is suitable for high-frequency use scenarios of repeated disassembly and assembly on construction sites.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular hybrid construction system for large public buildings, characterized in that, It includes a preparation area, a lifting area, a hoisting and sliding area, and an installation area; The pre-preparation area is used to transfer parts and install them into roof trusses. The roof truss is transferred to the lifting area and then lifted from ground level to the top hoisting and sliding area; The installation area is equipped with a first transport vehicle and a first crane; After the roof truss is hoisted to the edge of the hoisting and sliding area, it is transported to the installation area by the first transport vehicle group, and the support column is hoisted by the first crane; The lower end of the support column is fixedly connected to the ground of the installation area, and the upper end is connected to the roof truss to achieve vertical support for the roof truss.

2. The modular hybrid construction system for large public buildings according to claim 1, characterized in that, The pre-preparation area is equipped with a first guide rail, a first gantry, a second crane, and a second transport vehicle group; The first gantry reciprocates along the first guide rail to lift parts from the outside to a designated position in the pre-preparation area and to lift the prefabricated roof truss onto the second transport vehicle. The second crane is used to install the parts to form the roof truss; The first gantry lifts the installed roof truss, the second transport vehicle moves to directly under the roof truss, and after the first gantry lowers the roof truss onto the bearing surface of the second transport vehicle, the roof truss is transferred to the lifting area.

3. The modular hybrid construction system for large public buildings according to claim 2, characterized in that, The lifting area is equipped with a second guide rail, a second hanger, and a lifting sliding frame; The second hanger reciprocates along the second guide rail to lift and raise the roof truss transferred from the second transport vehicle group, and then moves it above the raised sliding frame before smoothly lowering the roof truss onto the raised sliding frame. The raised sliding frame is used to slide the roof truss horizontally to the hoisting sliding area.

4. The modular hybrid construction system for large public buildings according to claim 3, characterized in that, The hoisting and sliding area is equipped with a third guide rail and a third hanger; The third gantry reciprocates along the third guide rail to lift the roof truss transported by the lifting sliding frame, and then precisely lifts it above the first and second transport vehicle groups before lowering it to place the roof truss on the first transport vehicle group.

5. The modular hybrid construction system for large public buildings according to claim 4, characterized in that, A reserved gap is provided above the third guide rail on the raised sliding frame to provide space for the passage of the third hanger; It also includes short lifting tracks; The lifting short rail can be raised and lowered in the vertical direction, and is connected to the lifting sliding frame and the third guide rail at its top and bottom points respectively. A reserved gap of the same length is provided at the intersection of the projection of the third sliding platform and the third guide rail. When the lifting short rail is located at the lifting sliding frame and the third guide rail, it matches the corresponding reserved gap, thereby temporarily connecting the third sliding platform and the third guide rail.

6. The modular hybrid construction system for large public buildings according to claim 5, characterized in that, The installation area is provided with positioning grooves on the ground. The bottom of the support column is embedded in the positioning groove and fixedly connected.

7. The large-scale public building modular hybrid construction system according to claim 6, characterized in that, The roof truss has through holes at the positions corresponding to the support columns, allowing the support columns to pass through the roof truss from top to bottom and be installed on the ground.

8. The modular hybrid construction system for large public buildings according to claim 1, characterized in that, The roof truss has through holes at the positions corresponding to the support columns, allowing the support columns to pass through, so that the roof truss can be fitted onto the support columns from top to bottom.

9. The modular hybrid construction system for large public buildings according to claim 7, characterized in that, The support column and the roof truss are provided with bidirectional temporary connection pairs for temporarily connecting the support column and the roof truss.

10. The large-scale public building modular hybrid construction system according to claim 9, characterized in that, Including the following steps: S1: The first hanger transports the part to the designated position along the first guide rail; The second crane lifts and assembles the parts into a roof truss; The first gantry lifts the assembled roof truss and places it on the second transport vehicle; S2: The second transport vehicle transports the roof truss from the pre-preparation area to the end of the lifting area away from the hoisting and sliding area; The second hanger lifts the roof truss and slides it along the second guide rail onto the raised sliding frame; The roof truss slides along the raised sliding frame toward the installation platform. At this time, the lifting short rail rises to the raised sliding frame and matches the reserved gap of the raised sliding frame. S3: After passing through the short lifting track, the roof truss enters the hoisting and sliding area. The short lifting track descends to the third guide rail, matching the reserved gap of the third guide rail. The third gantry lifts the roof truss and slides it along the third guide rail to the edge of the lifting and sliding area, and places the roof truss on the first transport vehicle; S4: The first transport vehicle transports the roof truss to the designated location in the installation area, and the first crane lifts the support column from above through the through hole of the roof truss and lowers the bottom of the support column into the positioning groove; S5: The first crane lifts the roof truss upwards. When the roof truss reaches the designated height, the bidirectional temporary connecting pair fixes the support column to the roof truss.

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