Construction equipment and construction methods for large-span irregular steel trusses

Abstract

This invention discloses a construction device and method for large-span irregular steel trusses, belonging to the field of steel truss construction technology. The scheme uses a motor to drive a first rotating shaft to rotate, which in turn drives a first gear. Two first gears can transmit power to two second gears, causing the second gears to drive a second rotating rod. The second rotating rod drives a third gear, which in turn drives a rack, causing the third gear to climb upwards along the rack. This allows the transmission assembly to drive a guide assembly upwards, causing rollers to move upwards and contact a movable plate. The rollers then press the movable plate to rotate, and the movable plate, through an opening, drives a support shaft to move. This causes the support shaft to drive a aligning plate to rotate, aligning the four aligning plates vertically to fit the support frame. Continuous force can correct the support frame, maintaining accurate alignment between the two support frames, thus facilitating the docking and assembly of the support frames. Furthermore, automatic alignment improves construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel truss construction technology, and in particular to a construction device and method for large-span irregular steel trusses. Background Technology

[0002] With the rapid advancement of urbanization in my country, the urban land area can no longer fully meet the needs of further development. In order to address the problem of insufficient urban building space, urban buildings are gradually developing towards high-rise and large-span structures. As a key component of large-span buildings, the construction quality of steel trusses directly affects the overall quality and safety of the building.

[0003] Traditional high-altitude installation of steel trusses requires the erection of a full-span scaffold beneath the truss as a temporary support system. This temporary support system bears the structural weight and construction load throughout the installation process, and the steel truss is assembled on-site. The need for a temporary support system makes it difficult to guarantee safety and construction speed due to excessive high-altitude assembly. Furthermore, the installation and dismantling are complex, delaying construction progress and wasting materials, which cannot be reused. Therefore, researching a new construction device and method for large-span irregular steel trusses to solve these problems is of great significance. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems mentioned above and / or existing steel truss construction, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by this invention is that the need to set up temporary support systems makes it difficult to guarantee safety and construction speed when assembling too much at high altitude. Furthermore, the installation and dismantling are quite complicated, which not only delays the construction progress but also wastes materials, and the materials cannot be reused after use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a construction device and method for large-span irregular steel trusses, comprising,

[0008] The erection mechanism consists of multiple sets of erection mechanisms stacked longitudinally in sequence, with each erection mechanism including a support frame. Each support frame is equipped with a leveling component on all four sides. Two perforated plates are fixedly connected to the four corners of the bottom of the support frame, and two connection ports are opened at the four corners of the top of the support frame. Two through-holes are connected to both sides of the connection ports. The through-holes are opened on the support frame, and locking components are provided in the two adjacent through-holes. The locking components pass through the two perforated plates and are fixedly connected to the inside of the support frame. Four toothed rods are fixedly connected inside the support frame.

[0009] The drive mechanism includes a drive assembly located in the lowest support frame. The drive assembly is meshed with two transmission assemblies. Both ends of the transmission assemblies are meshed with two racks. The two transmission assemblies and the drive assembly are fixedly connected to a guide assembly located inside the support frame. Two racks are fixedly connected to both sides of the guide assembly.

[0010] As a further aspect of the present invention: the alignment component includes an alignment plate, which is rotatably connected to a support frame via a pin. A support shaft is fixedly connected to the bottom of the alignment plate, and the support shaft slides in an opening. The opening is located on a movable plate. The lower part of the movable plate is rotatably connected to two fixed blocks via a pin. The two fixed blocks are fixedly connected to the support frame, and a torsion spring is fixedly connected between the two fixed blocks. One end of each torsion spring is fixedly connected to the movable plate, and the torsion spring is sleeved outside the pin.

[0011] As a further embodiment of the present invention: the locking assembly includes a fixing plate, which is fixedly connected to the inner wall of the support frame. Two screws are rotatably connected to the fixing plate via two bearings. A fourth gear is fixedly connected to one end of each screw. A threaded cylinder is threadedly connected to the external thread of the screw. The threaded cylinder passes through the through-hole and enters the orifice plate.

[0012] As a further embodiment of the present invention: grooves are provided on both sides of the threaded cylinder, and the threaded cylinder is slidably connected to two limiting strips through the two grooves, and the two limiting strips are fixedly connected in a through-hole.

[0013] As a further aspect of the present invention: the guide assembly includes two guide plates, the two ends of which are dovetail portions, which are slidably connected in dovetail grooves, which are formed on the inner wall of the support frame.

[0014] As a further aspect of the present invention: two support bars are fixedly connected between the two guide plates, and rollers are fixedly connected to both support bars and both guide plates.

[0015] As a further aspect of the present invention: four circular columns are fixedly connected to the bottom of the support frame, and four circular openings are provided at the bottom of the support frame, the size of the circular columns being adapted to the size of the circular openings; the size of the perforated plate being adapted to the size of the connection opening.

[0016] As a further aspect of the present invention: the drive assembly includes two first rotating shafts, which are rotatably connected to the guide plate via bearings. A first gear is fixedly connected to the first rotating shaft, and the two first gears mesh. One of the first rotating shafts is fixedly connected to the output shaft of the motor, and the motor is fixedly connected to one of the guide plates.

[0017] As a further embodiment of the present invention: the transmission assembly includes a second rotating shaft, which is rotatably connected to the guide plate via a bearing. A second gear is fixedly connected to the second rotating shaft and meshes with a first gear. A third gear is fixedly connected to both ends of the second rotating shaft and meshes with a rack. The rack is L-shaped and has two tooth segments.

[0018] The construction method for a large-span irregular steel truss construction device includes the following steps:

[0019] S1. Steel structure hoisting:

[0020] Steel platform installation: Install the crawler crane traveling platform, set up a support frame under the vertical truss, and at the same time, lay the roadbed box on the top of the steel platform and weld anti-slip steel strips on the top plate of the steel roadbed box;

[0021] Tracked crane on steel platform: After the steel platform is installed and leveled, the crawler crane crawls to the crawler crane traveling platform to facilitate the hoisting of the steel structure;

[0022] Steel structure hoisting: crawler cranes are used to hoist the grid shell, floor beams and vertical trusses. The steel structure hoisting is completed in sections in sequence.

[0023] S2. Temporary support installation:

[0024] For the ground assembly of temporary support structures, first, the bottom support frame is positioned, and after positioning, another support frame is hoisted above the bottom support frame using a hoisting method.

[0025] The motor controls the first rotating shaft to drive the first gear to rotate, so that the guide assembly can climb upwards;

[0026] When the roller contacts the movable plate upward, it causes the roller to squeeze the movable plate to rotate. The movable plate drives the support shaft and the aligning plate to rotate through the opening. The four aligning plates are aligned and stand upright against the upper support frame, and the two support frames are aligned.

[0027] Continue to lower the support frame so that the two support frames fit together, insert the perforated plate into the connection port, so that the drive component continues to move and the guide component continues to climb upward until the toothed plate and the fourth gear drive each other.

[0028] The fourth gear drives the screw and the threaded cylinder to pass through the hole plate, fixing the two support frames. The guide assembly can continue to move upward and enter the upper support frame along the gear rod for assembly and use.

[0029] After the support frame is installed, complete the assembly of the bottom of the support frame set on the steel platform with the steel platform;

[0030] S3. Pre-assembly of steel structure:

[0031] Pre-assembly of the physical components: Draw a ground line based on the component elevation layout drawing and the pre-assembly range. After the ground line is inspected and found to be qualified, determine the position and height of the jig based on the relationship between the contact part between the jig and the component and the ground line.

[0032] The horizontality of the frame beam was measured and adjusted using a level instrument, and each control point was marked. After the control points were marked, the finished components were fully assembled, and the pre-assembled components were adjusted.

[0033] Virtual pre-assembly: By attaching magnetic patches to the component to be scanned, the component model is obtained using 3D scanning technology and imported into simulation software for virtual pre-assembly to simulate the actual assembly effect, thereby adjusting the component parameters based on the simulation results;

[0034] S4. On-site assembly:

[0035] On-site steel structure assembly: After the components are pre-assembled and arrive on site, the steel structure is lifted and assembled.

[0036] Pre-assembly measurement: Before the assembly begins after the steel structure assembly three-dimensional combination support frame is set up, the dimensional parameters of the jig are measured and corrected, and the layout of each spatial position and the arrangement of limit blocks are completed.

[0037] Assembly process measurement: During the steel structure assembly process, each chord and connecting rod between chords is measured and positioned one by one;

[0038] Measurement after assembly: After assembly, a total station is used to monitor and verify the structure in all aspects to ensure that it conforms to the design state;

[0039] S5. After the structure is installed, preheat the steel structure according to the steel thickness, bevel type and material, and then weld the steel structure to complete the construction work.

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] 1. This invention uses a motor to drive a first rotating shaft to rotate, which in turn drives a first gear. The two first gears can drive two second gears, causing the second gears to drive a second rotating rod. The second rotating rod drives a third gear and a rack, causing the third gear to climb upwards along the rack. This allows the transmission assembly to drive the guide assembly to climb upwards, causing the rollers to move upwards and contact the movable plate. The rollers then press the movable plate to turn, and the movable plate, through its opening, drives the support shaft to move. This allows the support shaft to drive the alignment plates to turn, aligning the four alignment plates vertically to fit the support frame. Continuous force can correct the support frame, maintaining accurate alignment between the two support frames, thus facilitating the docking and assembly of the support frame. Furthermore, automatic alignment improves construction efficiency.

[0042] 2. This invention uses a motor to drive a first rotating shaft to rotate, which in turn drives two first gears. The first gear and the second gear drive a second rotating shaft to rotate, which in turn drives a third gear and a rack to rotate. The third gear then climbs upward along the rack, thereby raising the height of the guide assembly. This allows the rollers to move upward and press the movable plate to turn. The movable plate, through its opening and support shaft, drives a straightening plate to correct the support frame. When the rack and the fourth gear are in motion, the fourth gear drives a screw and a threaded cylinder. The threaded cylinder screws into the hole plate, thus automatically fixing the support frame. Furthermore, because the upper and lower racks are connected, the drive mechanism can smoothly climb upward into the upper support frame, allowing for the installation of each support frame individually. This speeds up construction and improves safety. This method also allows for quick disassembly, facilitating subsequent use.

[0043] 3. This invention develops an improved reinforcement technology for crawler cranes to access basement roof steel platforms, enhancing the stability and overall rigidity of the steel platform, meeting the safety requirements for crawler crane construction on steel platforms, and improving the safety of crawler crane construction. Furthermore, addressing issues such as low installation efficiency, long construction period, and difficulties in high-altitude welding of temporary steel truss support systems, this invention, compared to traditional steel truss hoisting and assembly technologies, features safer, faster, more economical, and more precise construction. The physical pre-assembly technology guided by virtual pre-assembly technology can reduce the cost of multiple pre-assemblies of steel trusses and improve the efficiency of physical pre-assembly.

[0044] 4. Compared with traditional steel truss hoisting and assembly technologies, this invention features construction safety, speed, economy, and high precision. Furthermore, during construction, this technology simplifies the steps of hoisting large components, installing temporary support systems for steel trusses, and pre-assembling steel trusses, ensuring rapid and smooth project progress. Moreover, compared with single-entity pre-assembly technologies, the virtual pre-assembly technology-guided physical pre-assembly reduces the cost of multiple pre-assemblies of steel trusses and improves the efficiency of physical pre-assembly. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0046] Figure 1 This is a three-dimensional structural diagram of the large-span irregular steel truss construction device and construction method provided in the embodiments of the present invention.

[0047] Figure 2 This is a three-dimensional structural diagram of a single support frame in the large-span irregular steel truss construction device and construction method provided in the embodiments of the present invention.

[0048] Figure 3 This is a schematic diagram of the connection between the aligning component and the support frame in the construction device and method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0049] Figure 4 This is a three-dimensional cross-sectional structural diagram of the support frame in the construction device and construction method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0050] Figure 5 This is a schematic diagram of the connection between the drive component and the guide component in the construction device and construction method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0051] Figure 6 This is a schematic diagram of the side cross-section of the support frame in the construction device and construction method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0052] Figure 7 This is a three-dimensional structural diagram of the alignment component in the large-span irregular steel truss construction device and construction method provided in the embodiments of the present invention.

[0053] Figure 8 This is a partial cross-sectional structural diagram of the support frame in the construction device and construction method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0054] Figure 9 This is a schematic diagram of the structure of the screw and threaded cylinder in the construction device and construction method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0055] Figure 10 This is a three-dimensional structural diagram of the guide component in the construction device and construction method for large-span irregular steel trusses provided in the embodiments of the present invention.

[0056] Figure 11 This is a three-dimensional structural diagram of the driving component in the large-span irregular steel truss construction device and construction method provided in the embodiments of the present invention.

[0057] In the diagram: 100, Erection mechanism; 101, Support frame; 102, Alignment assembly; 1021, Alignment plate; 1022, Support shaft; 1023, Opening; 1024, Movable plate; 1025, Torsion spring; 1026, Fixing block; 103, Circular opening; 104, Toothed rod; 105, Connection port; 106, Through port; 107, Limiting strip; 108, Locking assembly; 1081, Fixing plate; 1082, Screw; 1083, Threaded cylinder; 1084, Fourth... Gear; 1085, Groove; 109, Hole plate; 110, Circular column; 111, Dovetail groove; 200, Drive mechanism; 201, Drive assembly; 2011, First gear; 2012, Motor; 2013, First shaft; 202, Transmission assembly; 2021, Second shaft; 2022, Second gear; 2023, Third gear; 203, Guide assembly; 2031, Guide plate; 2032, Roller; 2033, Support bar; 204, Tooth plate. Detailed Implementation

[0058] Detailed descriptions of specific embodiments of the present invention are provided below. Many specific details are set forth in the following description to provide a thorough understanding of the invention; however, the invention may be implemented in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0059] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0060] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0061] Example 1

[0062] like Figure 1-4 and Figure 6-7 As shown, the present invention provides a technical solution: a construction device for large-span irregular steel trusses includes:

[0063] Multiple sets of erection mechanisms 100 are arranged longitudinally in sequence. Each erection mechanism 100 includes a support frame 101, and each of the four sides of the support frame 101 is equipped with a leveling component 102. The leveling component 102 includes a leveling plate 1021, which is rotatably connected to the support frame 101 via a pin. The leveling plate 1021 can rotate smoothly via the pin, thus facilitating the leveling and alignment of the support frame 101. A support shaft 1022 is fixedly connected to the bottom of the leveling plate 1021. The support shaft 1022 slides in an opening 1023. The opening 1023 ensures the movement of the support shaft 1022 and allows the movable plate 1024 to smoothly control the support shaft 1022 to drive the leveling plate 1021 to rotate. The opening 1023 is opened on the movable plate 1024. The bottom of the movable plate 1024 is rotatably connected to two fixed blocks 1026 via pins. Connected to the support frame 101, torsion springs 1025 are fixed between the two fixed blocks 1026. The torque of the torsion springs 1025 can drive the movable plate 1024 to reset, thereby allowing the aligning plate 1021 to reset smoothly. Moreover, the torque of the torsion springs 1025 can maintain the angle of the aligning plate 1021 and the movable plate 1024, preventing the movable plate 1024 from deviating at an angle, allowing the roller 2032 to move upward. The movement of squeezing the movable plate 1024 can be achieved through the inclined surface of the movable plate 1024. One end of the two torsion springs 1025 is fixed to the movable plate 1024. The torsion springs 1025 are sleeved outside the pin. Two perforated plates 109 are fixed to the four corners of the bottom of the support frame 101. Locking components 108 are provided in the two adjacent through holes 106. The locking components 108 pass through the two perforated plates 109 and are fixed inside the support frame 101. Four toothed rods 104 are fixed inside the support frame 101.

[0064] The drive mechanism 200 includes a drive assembly 201, which includes two first rotating shafts 2013. The first rotating shafts 2013 are rotatably connected to the guide plate 2031 via bearings. A first gear 2011 is fixedly connected to each first rotating shaft 2013. The two first gears 2011 mesh and drive each other, enabling the first gears 2011 to drive the second gears 2022, thereby driving the second rotating shafts 2021 on both sides to rotate, causing the four third gears 2023 to move and maintaining the climbing motion. To ensure the stability of the stress point, one of the first rotating shafts 2013 is fixedly connected to the output shaft of the motor 2012. The motor 2012 is fixedly connected to one of the guide plates 2031. The drive assembly 201 is located in the lowest support frame 101. The drive assembly 201 is meshed with two transmission assemblies 202. The transmission assembly 202 includes a second rotating shaft 2021, which is rotatably connected to the guide plate 2031 via bearings. The second rotating shaft 2021 can maintain smooth rotation via bearings, thus lowering the second rotating shaft 2013. 21. Rotational resistance: A second gear 2022 is fixedly connected to the second rotating shaft 2021. The second gear 2022 meshes with the first gear 2011. A third gear 2023 is fixedly connected to both ends of the second rotating shaft 2021. The third gear 2023 meshes with the rack 104, and transmission occurs through the third gear 2023 and the rack 104. Because the rack 104 is fixed in position, the third gear 2023 can climb upwards along the rack 104. The toothed plate 204 is L-shaped and has two... Each tooth segment and the L-shaped arrangement of the toothed plate 204 allow two tooth segments to drive the fourth gear 1084 respectively. The upward movement of the toothed plate 204 can drive the two fourth gears 1084, thereby controlling the movement of the screw 1082. The two ends of the transmission assembly 202 are meshed with the two toothed bars 104. The two transmission assemblies 202 and the drive assembly 201 are all fixedly connected to the guide assembly 203. The guide assembly 203 is located inside the support frame 101, and two toothed plates 204 are fixedly connected to both sides of the guide assembly 203.

[0065] In this embodiment, the motor 2012 drives the first rotating shaft 2013 to rotate, which in turn drives the first gear 2011 to move. The two first gears 2011 can transmit power to the two second gears 2022, causing the second gears 2022 to drive the second rotating rod to move. The second rotating rod drives the third gear 2023 to transmit power to the rack 104, causing the third gear 2023 to climb upwards along the rack 104. This allows the transmission assembly 202 to drive the guide assembly 203 to climb upwards, and the roller 2032 to move upwards. The roller 2032 moves and contacts the movable plate 1024, causing the roller 2032 to press the movable plate 1024 to turn. The movable plate 1024 drives the support shaft 1022 to move through the opening 1023, causing the support shaft 1022 to drive the straightening plate 1021 to turn, so that the four straightening plates 1021 are straightened and upright and can fit against the support frame 101. By continuously applying force, the support frame 101 can be corrected, keeping the two support frames 101 accurately aligned, which is conducive to the docking and assembly of the support frame 101. Moreover, it can be automatically aligned, improving construction efficiency.

[0066] Example 2

[0067] Combined with appendix Figure 5-6 and attached Figure 8-11 It is concluded that: the drive assembly 201 includes two first rotating shafts 2013, which are rotatably connected to the guide plate 2031 via bearings. The first rotating shafts 2013 maintain stable rotation via bearings, enabling the first rotating shafts 2013 to drive the first gears 2011 to rotate smoothly. The first gears 2011 are fixedly connected to the first rotating shafts 2013, and the two first gears 2011 mesh. One of the first rotating shafts 2013 is fixedly connected to the output shaft of the motor 2012, and the motor 2012 is fixedly connected to one of the guide plates 2031. The support frame 101 has two connection ports 105 at each of its four top corners. Two through-holes 106 are connected to both sides of 5. The through-holes 106 are opened on the support frame 101. The through-holes 106 can ensure the passage of the threaded cylinder 1083, so that the threaded cylinder 1083 can be smoothly inserted into the hole plate 109 to position the support frame 101. Four circular columns 110 are fixed to the bottom of the support frame 101. Four circular openings 103 are opened at the bottom of the support frame 101. By connecting two support frames 101, the circular columns 110 are inserted into the circular openings 103, thereby increasing the connection stress between the support frames 101. The size of the circular column 110 is adapted to the size of the circular opening 103, and the size of the hole plate 109 is adapted to the size of the connection port 105.

[0068] The transmission assembly 202 includes a second rotating shaft 2021, which is rotatably connected to the guide plate 2031 via bearings. A second gear 2022 is fixedly connected to the second rotating shaft 2021 and meshes with the first gear 2011. A third gear 2023 is fixedly connected to both ends of the second rotating shaft 2021 and meshes with the rack 104. The gear plate 204 is L-shaped and has two tooth segments.

[0069] The locking assembly 108 includes a fixing plate 1081, which is fixedly connected to the inner wall of the support frame 101. Two screws 1082 are rotatably connected to the fixing plate 1081 via two bearings. The screws 1082 can be kept in smooth rotation by the bearings, so that the screws 1082 can drive the threaded cylinder 1083 to move. A fourth gear 1084 is fixedly connected to one end of the screw 1082. The threaded cylinder 1083 is externally threaded to the screw 1082. The rotation of the screw 1082 can drive the threaded cylinder 1083 to move, so that the threaded cylinder 1083 enters the orifice plate 10. 9. Thus, the orifice plate 109 can be locked. The threaded cylinder 1083 passes through the through port 106 and enters the orifice plate 109. Grooves 1085 are provided on both sides of the threaded cylinder 1083. The threaded cylinder 1083 is slidably connected to two limiting strips 107 through the two grooves 1085. The limiting strips 107 can guide the threaded cylinder 1083, so that the threaded cylinder 1083 can slide smoothly along the limiting strips 107 through the grooves 1085, and prevent the threaded cylinder 1083 from rotating with the screw 1082. The two limiting strips 107 are fixedly connected in one through port 106.

[0070] The guide assembly 203 includes two guide plates 2031, both ends of which are dovetails. The dovetails are slidably connected in the dovetail grooves 111, allowing the two ends of the guide plates 2031 to slide smoothly up and down in the dovetail grooves 111. The dovetail grooves 111 are formed on the inner wall of the support frame 101. Two support bars 2033 are fixedly connected between the two guide plates 2031. Rollers 2032 are fixedly connected to both the two support bars 2033 and the two guide plates 2031. Through the rolling force of the rollers 2032, the upward movement of the rollers 2032 can reduce the frictional resistance with the movable plate 1024, allowing the rollers 2032 to move smoothly and press the movable plate 1024 to move.

[0071] In this embodiment: the motor 2012 drives the first rotating shaft 2013 to rotate, causing the two first gears 2011 to transmit power. The first gear 2011 and the second gear 2022 transmit power to drive the second rotating shaft 2021 to rotate. The second rotating shaft 2021 drives the third gear 2023 to transmit power to the rack 104, causing the third gear 2023 to climb upwards along the rack 104, thereby raising the height of the guide assembly 203. This allows the roller 2032 to move upwards and press the movable plate 1024 to turn. The movable plate 1024 drives the leveling plate through the opening 1023 and the support shaft 1022. When the toothed plate 204 and the fourth gear 1084 are in motion, the fourth gear 1084 drives the screw 1082 and the threaded cylinder 1083 to drive the screw rod 1082 and the threaded cylinder 1083. The threaded cylinder 1083 is screwed into the hole plate 109, thereby automatically fixing the support frame 101. Moreover, since the upper and lower toothed rods 104 are connected, the drive mechanism 200 can climb upward smoothly into the upper support frame 101, so that the support frames 101 can be installed one by one, thereby speeding up the construction progress and improving safety. In addition, this method allows for quick disassembly, which is convenient for subsequent use.

[0072] Example 3

[0073] This embodiment, based on Embodiments 1 and 2, describes a construction method for a large-span irregular steel truss construction device, including the following steps:

[0074] S1. Steel structure hoisting:

[0075] For steel platform installation, a crawler crane is used to install the crawler crane traveling platform. A support frame 101 is set under the vertical truss. At the same time, a roadbed box with a thickness of about 200mm is laid on the upper part of the steel platform. Anti-slip steel strips are welded on the top plate of the steel roadbed box to increase the friction and adhesion of the crawler crane when it travels on it.

[0076] The crawler crane is placed on the steel platform. After the steel platform is installed and leveled, the crawler crane crawls to the crawler crane traveling platform to facilitate the hoisting of the steel structure.

[0077] For steel structure hoisting, crawler cranes were used to hoist the grid shell, floor beams and vertical trusses. To improve the stability and safety of the structure during construction, the steel structure hoisting was completed in sections in sequence.

[0078] S2. Temporary support installation:

[0079] The temporary support structure is assembled on the ground. First, the lowest support frame 101 is positioned. After positioning, another support frame 101 is hoisted above the lowest support frame 101. Then, the motor 2012 is operated to control the first rotating shaft 2013 to drive the first gear 2011 to rotate. The two first gears 2011 drive the two first gears 2011 to drive the two second gears 2022. The second gears 2022 drive the third gear 2023 to drive the second rotating shaft 2021 to rotate. The second rotating shaft 2021 drives the third gear 2023 to drive the rack 104 to drive the guide component 203 to climb upward. When the roller 2032 contacts the movable plate 1024, the roller 2032 squeezes the movable plate 1024 to rotate. The movable plate 1024 drives the support shaft 1022 and the aligning plate 1021 to rotate through the opening 1023. Turn, the four aligning plates 1021 are aligned and erected against the upper support frame 101, and the two support frames 101 are aligned. Then the support frame 101 is lowered and the two support frames 101 are attached. The perforated plate 109 is inserted into the connection port 105, so that the drive component 201 continues to move and the guide component 203 continues to climb upward until the toothed plate 204 and the fourth gear 1084 are driven. The fourth gear 1084 drives the screw 1082 and the threaded cylinder 1083 to drive, so that the threaded cylinder 1083 passes through the perforated plate 109, so that the two support frames 101 are fixed. The guide component 203 continues to move upward and can enter the upper support frame 101 along the toothed rod 104. The assembly and use are carried out in sequence. During the installation process, a 16-channel steel is set in the middle of the support frame 101, and one on each side, which is welded to the upright of the support frame 101. After the support frame 101 is installed, the bottom of the support frame 101 set on the steel platform is assembled with the steel platform.

[0080] S3. Pre-assembly of steel structure:

[0081] Pre-assembly: Based on the component elevation layout drawing and the pre-assembly range, draw a ground line. After the ground line is inspected and found to be qualified, determine the position and height of the jig according to the relationship between the contact part of the jig and the component and the ground line. Use a level to measure and adjust the levelness of the jig beam and mark each control point. After all control points are marked, assemble the finished component completely and use a right angle ruler, plumb bob, welding inspection ruler and steel ruler to adjust the pre-assembled component.

[0082] Virtual pre-assembly:

[0083] a. Component preparation: Place the component to be scanned in an open area to facilitate component scanning;

[0084] b. Scanning equipment preparation: Complete the scanner setup and prepare the relevant computer programs.

[0085] c. Component patching: A magnetic black patch is attached to the component to be scanned;

[0086] d. Component scanning: Using a scanner, perform 3D scanning of the components of the patch;

[0087] e. Virtual pre-assembly: The scanned model is imported into the GEOMAGIC software for pre-assembly processing, and then the component parameters are adjusted according to the simulation results.

[0088] Geomagic software is a suite of advanced 3D design, inspection, and engineering software solutions developed by 3D Systems. It is primarily used for reverse engineering, quality inspection, 3D scan data processing, freeform design, and CAD data conversion. Alternatively, specialized structural analysis and BIM (Building Information Modeling) software, such as TeklaStructures, Autodesk Revit, STAAD.Pro, or other industry-specific tools, can be used. These tools can read precise 3D model data processed by Geomagic, perform virtual assembly, check for gaps, conflicts, and compliance with design requirements, and then adjust the dimensions, positions, or other parameters of components based on the simulation results. The specific software used depends on project requirements and the chosen technical solution; this invention does not impose any limitations.

[0089] S4. On-site assembly:

[0090] Steel structure is assembled on site. After the components are pre-assembled and brought to the site, a truck crane is used to lift and assemble the steel structure. The removal of the steel structure from the mold is carried out by a crawler crane.

[0091] Before assembly, the total length, width, and height of the jig are measured and corrected after the steel structure assembly three-dimensional combination support frame 101 is set up and before the assembly begins. The layout of each spatial position and the arrangement of the limit blocks are also completed.

[0092] During the assembly process, each chord and connecting rod between chords needs to be measured and positioned during the steel structure assembly process.

[0093] After assembly, measurements are taken. Once assembly is complete, a total station is used to conduct comprehensive monitoring and calibration of the structure to ensure that it conforms to the design specifications.

[0094] S5. After the structure is installed, CO2 gas shielded welding (GMAW) and manual arc welding (SMAW) are used to weld the steel structure according to the selected steel thickness, bevel type and material. In order to slow down the cooling rate after welding, reduce welding stress and reduce the restraint of the welded structure, the steel structure can be preheated before welding to complete the construction operation.

[0095] Among them, GMAW (Gas Metal Arc Welding): Gas-shielded consumable electrode welding, also known as MIG (Metal Inert Gas) welding or MAG (Metal Active Gas) welding. This welding method uses a continuously fed solid or flux-cored welding wire as the consumable electrode, and injects a shielding gas (usually carbon dioxide, argon, or an argon-carbon dioxide mixture) during the welding process to form a protective atmosphere to prevent the molten pool from being affected by oxygen and nitrogen in the air, thereby ensuring weld quality.

[0096] SMAW (Shielded Metal Arc Welding): Manual electric arc welding, also known as flux-coated electrode arc welding. In this process, the welder holds a electrode coated with flux and ignites an electric arc to generate high temperatures between the electrode and the workpiece to melt them. The flux evaporates upon heating, forming a protective mist that prevents the molten pool from being contaminated by the atmosphere.

[0097] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0098] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0099] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0100] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A construction device for large-span irregular steel trusses, characterized in that, include: A mounting mechanism (100) is provided, in which multiple mounting mechanisms (100) are stacked longitudinally in sequence, and each mounting mechanism (100) includes a support frame (101); each support frame (101) is equipped with a leveling component (102) on all four sides, and two perforated plates (109) are fixedly connected to the four corners of the bottom of the support frame (101), and two connection ports (105) are opened at the four corners of the top of the support frame (101); two through ports (106) are connected to both sides of the connection ports (105), and the through ports (106) are opened on the support frame (101), and locking components (108) are provided in the two adjacent through ports (106); the locking components (108) pass through the two perforated plates (109), and the locking components (108) are fixedly connected to the inside of the support frame (101), and the support frame (101) is fixedly connected to the inside of the support frame (101). The internal structure of the ) has four toothed rods (104) fixedly connected; the alignment component (102) includes an alignment plate (1021), which is rotatably connected to the support frame (101) by a pin. The bottom of the alignment plate (1021) is fixedly connected to a support shaft (1022), which slides in an opening (1023). The opening (1023) is opened on a movable plate (1024). The bottom of the movable plate (1024) is rotatably connected to two fixed blocks (1026) by a pin. The two fixed blocks (1026) are fixedly connected to the support frame (101). A torsion spring (1025) is fixedly connected between the two fixed blocks (1026). One end of the two torsion springs (1025) is fixedly connected to the movable plate (1024), and the torsion springs (1025) are sleeved outside the pin. The drive mechanism (200) includes a drive assembly (201), which is located in the lowest support frame (101). The drive assembly (201) is meshed with two transmission assemblies (202). Both ends of the transmission assemblies (202) are meshed with two racks (104). The two transmission assemblies (202) and the drive assembly (201) are fixedly connected to the guide assembly (203). The guide assembly (203) is located inside the support frame (101). Both sides of the guide assembly (203) are fixedly connected to two toothed plates (204).

2. The construction device for large-span irregular steel trusses as described in claim 1, characterized in that, The locking assembly (108) includes a fixing plate (1081) which is fixed to the inner wall of the support frame (101). Two screws (1082) are rotatably connected to the fixing plate (1081) via two bearings. A fourth gear (1084) is fixed to one end of each screw (1082). A threaded cylinder (1083) is externally threaded onto the screw (1082). The threaded cylinder (1083) passes through the port (106) and enters the orifice plate (109).

3. The construction device for large-span irregular steel trusses as described in claim 2, characterized in that, The threaded cylinder (1083) has grooves (1085) on both sides. The threaded cylinder (1083) is slidably connected to two limiting strips (107) through the two grooves (1085). The two limiting strips (107) are fixed in a through-hole (106).

4. The construction device for large-span irregular steel trusses as described in claim 1, characterized in that, The guide assembly (203) includes two guide plates (2031), with dovetails at both ends of the two guide plates (2031). The dovetails are slidably connected in a dovetail groove (111), which is formed on the inner wall of the support frame (101).

5. The construction device for large-span irregular steel trusses as described in claim 4, characterized in that, Two support bars (2033) are fixedly connected between the two guide plates (2031), and rollers (2032) are fixedly connected to both the two support bars (2033) and the two guide plates (2031).

6. The construction device for large-span irregular steel trusses as described in any one of claims 1-5, characterized in that, The bottom of the support frame (101) is fixedly connected to four circular columns (110), and the bottom of the support frame (101) is provided with four circular openings (103). The size of the circular columns (110) is adapted to the size of the circular openings (103); the size of the perforated plate (109) is adapted to the size of the connection port (105).

7. The construction device for large-span irregular steel trusses as described in claim 6, characterized in that, The drive assembly (201) includes two first rotating shafts (2013), which are rotatably connected to the guide plate (2031) via bearings. A first gear (2011) is fixedly connected to the first rotating shaft (2013), and the two first gears (2011) mesh. One of the first rotating shafts (2013) is fixedly connected to the output shaft of the motor (2012), and the motor (2012) is fixedly connected to one of the guide plates (2031).

8. The construction device for large-span irregular steel trusses as described in claim 7, characterized in that, The transmission assembly (202) includes a second rotating shaft (2021), which is rotatably connected to the guide plate (2031) via a bearing. A second gear (2022) is fixedly connected to the second rotating shaft (2021), and the second gear (2022) meshes with the first gear (2011). A third gear (2023) is fixedly connected to both ends of the second rotating shaft (2021), and the third gear (2023) meshes with the rack (104). The tooth plate (204) is L-shaped and has two tooth segments.

9. The construction method of the large-span irregular steel truss construction device as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Steel structure hoisting: Steel platform installation: Install the crawler crane traveling platform, set up a support frame (101) under the vertical truss, and at the same time, lay the roadbed box on the upper part of the steel platform and weld anti-slip steel strips on the top plate of the steel roadbed box; Tracked crane on steel platform: After the steel platform is installed and leveled, the crawler crane crawls to the crawler crane traveling platform to facilitate the hoisting of the steel structure; Steel structure hoisting: crawler cranes are used to hoist the grid shell, floor beams and vertical trusses. The steel structure hoisting is completed in sections in sequence. S2. Temporary support installation: The temporary support structure is assembled on the ground. First, the bottom support frame (101) is positioned. After positioning, another support frame (101) is hoisted above the bottom support frame (101) by hoisting. The operating motor (2012) controls the first rotating shaft (2013) to drive the first gear (2011) to rotate, so that the guide assembly (203) climbs upward; When the roller (2032) contacts the movable plate (1024) upward, the roller (2032) squeezes the movable plate (1024) to rotate. The movable plate (1024) drives the support shaft (1022) and the aligning plate (1021) to rotate through the opening (1023). The four aligning plates (1021) are aligned and upright with each other and attached to the upper support frame (101), and the two support frames (101) are aligned. Continue to lower the support frame (101) so that the two support frames (101) fit together, insert the perforated plate (109) into the connection port (105), so that the drive assembly (201) continues to move and the guide assembly (203) continues to climb upward until the toothed plate (204) and the fourth gear (1084) are driven. The fourth gear (1084) drives the screw (1082) and the threaded cylinder (1083) to pass through the hole plate (109), fix the two support frames (101), and allow the guide assembly (203) to continue to move upward and enter the upper support frame (101) along the rack (104) for assembly and use in sequence; After the support frame (101) is installed, the bottom of the support frame (101) set on the steel platform is assembled with the steel platform. S3. Pre-assembly of steel structure: Pre-assembly of the physical components: Draw a ground line based on the component elevation layout drawing and the pre-assembly range. After the ground line is inspected and found to be qualified, determine the position and height of the jig based on the relationship between the contact part between the jig and the component and the ground line. The horizontality of the frame beam was measured and adjusted using a level instrument, and each control point was marked. After the control points were marked, the finished components were fully assembled, and the pre-assembled components were adjusted. Virtual pre-assembly: By attaching magnetic patches to the component to be scanned, the component model is obtained using 3D scanning technology and imported into simulation software for virtual pre-assembly to simulate the actual assembly effect, thereby adjusting the component parameters based on the simulation results; S4. On-site assembly: On-site steel structure assembly: After the components are pre-assembled and arrive on site, the steel structure is lifted and assembled. Pre-assembly measurement: Before the assembly begins after the steel structure assembly three-dimensional combination support frame is set up, the dimensional parameters of the jig are measured and corrected, and the layout of each spatial position and the arrangement of limit blocks are completed. Assembly process measurement: During the steel structure assembly process, each chord and connecting rod between chords is measured and positioned one by one; Measurement after assembly: After assembly, a total station is used to monitor and verify the structure in all aspects to ensure that it conforms to the design. S5. After the structure is installed, preheat the steel structure according to the steel thickness, bevel type and material, and then weld the steel structure to complete the construction work.

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