High-altitude integral hoisting construction method for special-shaped steel components

Abstract

The present application belongs to the technical field of building construction structure. The high-altitude integral hoisting construction method of special-shaped steel member comprises the following steps: installation of pre-buried components; installation of hoisting device; assembly of special-shaped steel member; lifting of special-shaped steel member; rotation of special-shaped steel member; and transfer of special-shaped steel member. The present application is used to solve the technical problem that the existing hoisting method is difficult to complete the continuous operations of lifting, positioning, rotation and just-in-place in one time.

Description

Technical Field

[0001] This invention belongs to the field of building technology, specifically relating to a method for high-altitude hoisting of irregularly shaped steel components. Background Technology

[0002] like Figure 2 , 3 As shown in Figure 4, the through-type heavy-duty node 100 is an irregularly shaped component with a total weight of 12 tons per node. In engineering construction, tower cranes or tire-mounted cranes are generally used for the high-altitude hoisting of through-type heavy-duty nodes due to their quick and convenient operation. However, for high-rise (or super high-rise) buildings, the performance parameters of the tower cranes available on-site sometimes cannot meet the lifting requirements of through-type heavy-duty nodes. The selection of tire-mounted cranes is constrained by site conditions and the building's own structure, making it difficult to maximize their effectiveness. Furthermore, using unconventional methods such as masts for hoisting or disassembling and hoisting the component poses significant safety risks, while the latter is cumbersome to disassemble and assemble, and is sometimes not permitted. Especially in situations requiring component attitude adjustment in the air, current conventional hoisting methods struggle to complete continuous operations such as lifting, positioning, rotation, and placement in one go. Summary of the Invention

[0003] The purpose of this invention is to provide a method for the high-altitude hoisting of irregularly shaped steel components, in order to solve the technical problem that existing hoisting methods are difficult to complete continuous operations such as lifting, positioning, rotation, and placement in one go.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a method for high-altitude integral hoisting construction of irregularly shaped steel components, comprising:

[0005] Installation of embedded components: Embedded components are installed on structural beams near the designed installation location of the irregular steel components for the installation of hoisting devices. The embedded components are isosceles trapezoidal structures.

[0006] Installation of the hoisting device: The hoisting device includes a lifting and rotating mechanism, a transferring mechanism, and a support assembly; the support assembly is installed on the pre-embedded assembly on the structural beam, and the lifting and rotating mechanism and the transferring mechanism are installed on the support assembly. The lifting and rotating mechanism is used to lift and rotate the irregular steel component; the transferring mechanism is used to drive the lifting mechanism and the irregular steel component to perform linear reciprocating motion.

[0007] Assembly of irregular steel components: On the floor or ground directly below the projection plane of the installation position of the lifting and rotating mechanism, the irregular steel components to be lifted are assembled in a direction parallel to the main structure.

[0008] Lifting of irregular steel components: Using the lifting and rotating mechanism, the irregular steel components are lifted to an oblique position above the designed installation position of the irregular steel components;

[0009] Rotation of irregular steel components: The irregular steel components are rotated to a position perpendicular to the main structure using the lifting and rotating mechanism and then locked in place.

[0010] Transfer of irregular steel components: Using the transfer mechanism, the irregular steel components are transferred to a position above the designed installation position of the irregular steel components; the irregular steel components are lowered to the designed installation position and installed on the connection end of the floor.

[0011] This invention provides a high-altitude hoisting construction method for the overall lifting, rotation, and transfer of irregularly shaped steel components. The hoisting device is preferably a steel structure. The hoisting device is installed at a reasonable location on the building. The irregularly shaped steel component is lifted to the planned height in one go by the lifting mechanism mounted on the device. Then, the lifting mechanism is rotated to a preset angle and fixed. Finally, the transfer mechanism is used to transfer the irregularly shaped steel component to the designated horizontal position. The operation is simple, reasonable, and efficient.

[0012] To solve the technical problem of collision between irregularly shaped steel components and the main structure during the lifting process, the present invention adopts the following technical solution: lifting guide components are correspondingly installed on the main structure, on the irregularly shaped steel components, and on the floor or ground where the irregularly shaped steel components are assembled, for guiding the irregularly shaped steel components during the lifting process and preventing collision between the irregularly shaped steel components and the main structure.

[0013] The guiding components include a first lifting guiding component and a second lifting guiding component; the first lifting guiding component and the second lifting guiding component are respectively located on both sides of the irregular steel component.

[0014] To address the technical problem of how to implement the lifting guide component, the present invention adopts the following technical solution, wherein the first lifting guide component and the second lifting guide component have the same structure, both comprising:

[0015] Guide rope, the lower end of which is set on the floor or ground where the irregular steel components are assembled;

[0016] The first guide rope mounting pieces are detachably installed on the main structure from top to bottom, and are vertically installed between the first guide rope mounting pieces and the main structure; the highest first guide rope mounting piece is located on a structural beam near the designed installation position of the irregular steel component, and is used to fix the upper end of the guide rope; the middle first guide rope mounting piece is used for the guide rope to pass through.

[0017] The second guide rope mounting component is disposed on both sides of the irregular steel component. The second guide rope mounting component is machined with guide rope holes for the guide rope to pass through.

[0018] To address the technical problem of hoisting a main structure with inconsistent outer diameters, this invention employs the following technical solution: when the outer diameters of the main structures are inconsistent, i.e., the main structure comprises a main structure I and a main structure II arranged from top to bottom; the outer diameter of the main structure II is larger than that of the main structure III.

[0019] The lifting and rotating mechanism is moved to the outside of the main structure two using a transfer mechanism, and the irregular steel component is lifted using the lifting mechanism;

[0020] When the irregular steel component is lifted to the bottom of the main structure, the lifting mechanism is moved to the outside of the main structure using the transfer mechanism, and then lifted to the planned height using the lifting mechanism.

[0021] To solve the technical problem of collision between the main structure and the hoisting node with inconsistent outer diameter of the main structure, the present invention adopts the following technical solution: a main structure first lifting guide component is provided on the main structure first, and a main structure second lifting guide component is provided on the main structure second, with the main structure second lifting guide component located outside the main structure first guide component;

[0022] When the irregular steel component is located outside the second main structure, the second main structure lifting and guiding assembly is used; when the irregular steel component is located outside the first main structure, the first main structure lifting and guiding assembly is used.

[0023] To address the technical problem of how to implement the pre-embedded components, the present invention adopts the following technical solution, wherein the pre-embedded components include:

[0024] The first embedded part is set on the structural beam where the irregular steel component is designed to be installed, and is located on both sides of the designed installation position of the irregular steel component, for installing the bracket assembly; there are two first embedded parts;

[0025] The second embedded part is set on the second structural beam inside the structural beam where the irregular steel component is designed to be installed, and is used as a counterweight for the hoisting device; there are two second embedded parts; the second embedded parts are located at the two vertices of the upper base of the isosceles trapezoidal embedded component;

[0026] The third embedded part is set on the structural beam where the irregular steel component is designed and installed, and is located outside the first embedded part, and is used to adjust the verticality of the support assembly; there are two third embedded parts; the third embedded parts are located at the two vertices of the lower base of the isosceles trapezoidal structure embedded assembly.

[0027] To address the technical problem of how to implement the support assembly, the present invention adopts the following technical solution, wherein the support assembly includes:

[0028] The first bracket is installed on the first embedded part; the first bracket is connected to the third embedded part via the first cable-stayed cable;

[0029] The second bracket is installed on the first embedded part 2. The second bracket is arranged parallel to the first bracket. The second bracket is connected to the first bracket frame via a connecting beam. The second bracket is connected to the third embedded part 2 via a second cable.

[0030] The first rear tie rod mounting beam is vertically installed above the second structural beam;

[0031] The second rear tie rod mounting beam is set at the bottom of the second structural beam and below the second embedded part, and is located in the orthogonal projection direction of the first rear tie rod mounting beam;

[0032] The rear tie rod has its upper end mounted on the first rear tie rod mounting beam, and its lower end passes through a second embedded part on the floor and is connected to the second rear tie rod mounting beam.

[0033] To address the technical problem of how to implement the lifting and slewing mechanism, the present invention adopts the following technical solution, wherein the lifting and slewing mechanism includes:

[0034] The lifting beam is installed at the cantilever ends of the first and second supports;

[0035] The slewing assembly is mounted on the lifting beam;

[0036] The lifting mechanism is mounted on the rotary assembly;

[0037] A limiting component is provided on the lifting mechanism and the lifting beam for positioning the lifting mechanism after rotation.

[0038] To solve the technical problem of how the lifting mechanism is implemented, the present invention adopts the following technical solution: the lifting mechanism is a hydraulic lifting mechanism; a thrust ring is provided at the bottom of the base of the lifting mechanism;

[0039] The rotary assembly includes a planar thrust bearing and a bearing housing; the thrust ring is fitted onto the bearing housing.

[0040] The limiting component includes:

[0041] A thrust ring is disposed on the base of the lifting mechanism and is fastened to the rotary assembly;

[0042] Connecting lugs are symmetrically arranged on the thrust ring;

[0043] Positioning ear plates are evenly distributed circumferentially on the lifting beam outside the rotary assembly;

[0044] Rotating the lifting mechanism causes the connecting ear plate to engage with the positioning ear plate at the corresponding position and a positioning connector to be provided, thereby achieving the positioning and limiting of the rotating lifting mechanism.

[0045] To solve the technical problem of how to implement the first, second, and third embedded parts, the present invention adopts the following technical solution: the first and second embedded parts each include an embedded plate, and the bottom of the embedded plate is provided with symmetrically arranged L-shaped ribs to form a π-shaped structure; the embedded plate is connected to the first bracket or the second bracket.

[0046] The second embedded part is an embedded sleeve, which is vertically installed in the floor layer to form a reserved through hole for the rear tie rod to pass through;

[0047] Both of the third embedded parts one and two include an mounting plate, a connecting plate, and L-shaped ribs. The mounting plate is provided with a connecting plate, and two L-shaped ribs are symmetrically arranged at the bottom of the mounting plate to form a π-shaped structure. The connecting plate is connected to the corresponding stay cable. The length of the stay cable is adjustable.

[0048] To solve the technical problems of the main structure, the present invention adopts the following technical solution, wherein the main structure is a concrete structure, a steel structure, or a concrete-steel hybrid structure.

[0049] To address the technical problem of how the transfer mechanism is implemented, the present invention adopts the following technical solution, wherein the transfer mechanism includes:

[0050] A first traction mechanism is mounted on the bracket assembly. The first traction mechanism is connected to the lifting beam and drives the lifting beam to move closer to the rear tie rod.

[0051] A second traction mechanism is mounted on the bracket assembly. The second traction mechanism is connected to the lifting beam and drives the lifting beam to move away from the rear tie rod.

[0052] To address the technical problem of high transfer resistance, the present invention adopts the following technical solution: lubricating oil is provided between the lifting beam and the first support, and between the lifting beam and the second support; a rounded edge plate is used below the lifting beam to significantly reduce sliding resistance.

[0053] To further address the technical issues of consistent forward and backward movement of the lifting mechanism and lateral tipping, the present invention adopts the following technical solution: guide rail slider assemblies are provided between the lifting beam and the first support, and between the lifting beam and the second support.

[0054] To solve the technical problem of how to implement the first guide rope mounting component, the present invention adopts the following technical solution: the first guide rope mounting component is set every 6 layers;

[0055] A fourth embedded part is provided on the main structure, and the fourth embedded part is detachably connected to the first guide rope mounting part. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the lifting process of the high-altitude integral hoisting construction method for irregularly shaped steel components of the present invention;

[0057] Figure 2 This is a schematic diagram of the rotation process of the high-altitude overall hoisting construction method for irregularly shaped steel components of the present invention;

[0058] Figure 3 This is a schematic diagram of the transfer process of the high-altitude overall hoisting construction method for irregularly shaped steel components of the present invention;

[0059] Figure 4 This is a structural schematic diagram of the hoisting device and the through-type heavy-duty node of the present invention;

[0060] Figure 5 This is a schematic diagram of the hoisting device of the present invention;

[0061] Figure 6 This is a schematic diagram of the first embedded part of the present invention;

[0062] Figure 7 This is a schematic diagram of the lifting process according to an embodiment of the present invention;

[0063] Figure label:

[0064] 100 through-type super-heavy nodes;

[0065] 200 Embedded component; 210 First embedded part; 211 Embedded plate; 212 L-shaped rib; 220 Second embedded part; 230 Third embedded part; 231 Mounting plate; 232 Connecting plate; 233 L-shaped rib; 240 Fourth embedded part;

[0066] 300 Bracket assembly; 310 First bracket; 311 First column; 312 First crossbeam; 313 First diagonal brace; 314 First fixed ear plate one; 320 Second bracket; 321 Second column; 322 Second crossbeam; 323 Second diagonal brace; 324 First fixed ear plate two; 330 Connecting beam; 331 Fixed pulley one; 332 Fixed pulley two; 340 First inclined cable; 341 First tensioning basket; 350 Second inclined cable; 351 Second tensioning basket; 361 First rear tie rod; 362 Second rear tie rod; 363 First rear tie rod mounting beam; 364 First mounting plate; 365 First connector; 366 Second rear tie rod mounting beam; 367 Second mounting plate; 368 Second connector;

[0067] 400 Lifting and slewing mechanism; 410 Lifting mechanism; 411 Base; 412 Lifting cable; 413 Thrust ring; 414 Lifting beam; 415 Guide block; 416 Traction ear plate one; 417 Traction ear plate two; 420 Slewing assembly; 430 Limiting assembly; 431 Connecting ear plate; 432 Positioning ear plate; 433 Positioning connecting rod; 434 Pin shaft;

[0068] 500 Transfer mechanism; 510 First traction mechanism, 520 Second traction mechanism, 530 Third traction mechanism, 540 Fourth traction mechanism;

[0069] 610 First lifting and guiding assembly; 620 Second lifting and guiding assembly; 611 Guide rope; 612 First guide rope mounting component; 613 Second guide rope mounting component;

[0070] 700 Main structure, 710 Structural beam, 720 Main structure one, 721 Main structure one lifting and guiding component, 730 Main structure two, 731 Main structure two lifting and guiding component, 740 Floor layer, 741 Connection end. Detailed Implementation

[0071] In this embodiment, the irregular steel component is a through-type heavy-duty node 100, and the specific structure is shown in [reference needed]. Figure 1-4 .

[0072] like Figure 1-6 As shown, the high-altitude hoisting construction method for irregularly shaped steel components includes:

[0073] I. Installation of Embedded Components: Embedded components 200 are installed on the structural beams 710 near the designed installation position of the through-type heavy-duty node 100 on the main structure 700. These components are used to install the hoisting device. The embedded components 200 are isosceles trapezoidal structures. The main structure 700 can be a concrete structure, a steel structure, or a concrete-steel hybrid structure. A fourth set of embedded parts 240 is installed every six floors on the main structure 700 for installing the first guide rope mounting parts 612. The fourth embedded parts and the first guide rope mounting parts are detachably connected, preferably by bolts.

[0074] The embedded component 200 includes a first embedded part 210, a second embedded part 220, and a third embedded part 230.

[0075] The first embedded part 210 is installed on the structural beam 710 of the main structure 700 at the designed installation position of the through-type heavy-duty node 100, and is located on both sides of the designed installation position of the through-type heavy-duty node, for installing the support assembly 300. There are two first embedded parts, including first embedded part one and first embedded part two. Both first embedded parts one and two include embedded plates 211, preferably steel plates. The bottom of the embedded plate 211 is provided with symmetrically arranged L-shaped ribs 212 to form a π-shaped structure. The embedded plate 211 is used to connect with the first or second support of the support assembly 300.

[0076] The second embedded part 220 is installed on the second structural beam inside the structural beam at the designed installation position of the through-type heavy-duty node, and is used as a counterweight for the hoisting device. There are two second embedded parts. The second embedded parts are located at the two vertices of the upper base of the embedded component of the isosceles trapezoidal structure. The second embedded part 220 is an embedded sleeve, which is vertically installed in the floor layer to form a reserved through hole for the rear tie rod to pass through.

[0077] The third embedded part 230 is installed on the structural beam where the through-type heavy-duty node design installation position is located, and is located outside the first embedded part, used to adjust and ensure the verticality of the support assembly. There are two third embedded parts, including third embedded part one and third embedded part two. The third embedded part 230 is located at the two vertices of the lower base of the isosceles trapezoidal embedded assembly. Both third embedded parts one and two include a mounting plate 231, a connecting plate 232, and L-shaped ribs 233. The mounting plate 231 is preferably a steel plate, and the connecting plate 232, preferably a steel plate, is provided on the mounting plate 231. The connecting plate 232 is used to connect with the first inclined cable 340 and the second inclined cable 350 of the support assembly 300. Two L-shaped ribs 233 are symmetrically arranged at the bottom of the mounting plate 231 to form a π-shaped structure for connection with the floor layer 740. The connecting plate 232 is preferably a steel perforated plate.

[0078] II. Installation of hoisting equipment:

[0079] like Figure 4 As shown, the hoisting device includes a lifting and rotating mechanism 400, a transferring mechanism 500, and a support assembly 300. The support assembly 300 is installed on a pre-embedded component on the structural beam, and the lifting and rotating mechanism 400 and the transferring mechanism 500 are installed on the support assembly 300. The lifting and rotating mechanism 400 is used to lift and rotate the through-type heavy-duty node 100. The transferring mechanism 500 is used to drive the lifting and rotating mechanism 400 and the through-type heavy-duty node 100 to perform linear reciprocating motion, specifically:

[0080] Assemble the first support 310 and the second support 320: A first crossbeam 312 is welded to the top of the first column 311, forming a T-shaped structure; first diagonal braces 313 are welded to both sides of the upper part of the first column 311, with the upper ends of the first diagonal braces 313 welded to the bottom of the corresponding side of the first crossbeam 312. The first diagonal braces 313, the first column 311, and the first crossbeam 312 form a right-angled triangle structure. A second crossbeam 322 is welded to the top of the second column 321, forming a T-shaped structure. A first fixed lug 314 is welded to the first crossbeam 312 for mounting the (forward) transfer mechanism 500. A second connecting end plate (not shown in the figure) is provided on the first column 311 for mounting the (backward) transfer mechanism 500. Second diagonal braces 323 are welded to both sides of the upper part of the second column 321, with the upper ends of the second diagonal braces 323 welded to the bottom of the corresponding side of the second crossbeam 322. The second diagonal braces 323, the second column 321, and the second crossbeam 322 form a right-angled triangle structure. The first fixed lug 324 is welded onto the second crossbeam 322 for mounting the (forward) transfer mechanism 500. The second connecting end plate 2 (not shown in the figure) is provided on the second column 321 for mounting the (backward) transfer mechanism 500.

[0081] The first bracket 310 is welded to the embedded plate of the first embedded part one of the floor layer, and the column base is reliably fixed to the embedded plate with stiffening ribs; the second bracket 320 is welded to the embedded iron plate of the second embedded part two of the floor layer, and the column base is reliably fixed to the embedded plate with stiffening ribs.

[0082] The first bracket 310 and the second bracket 320 are bolted together through the connecting beam 330. The first rear tie rod mounting beam 363 is welded to the first crossbeam 312 and the second crossbeam 322 of the first bracket 310 and the second bracket 320. Fixed pulley 1 331 and fixed pulley 2 332 are installed on the connecting beam 330.

[0083] The first rear tie rod 361 and the second rear tie rod 362 are made of precision-rolled threaded steel. The upper ends of the first rear tie rod 361 and the second rear tie rod 362 are connected to the first rear tie rod mounting beam 363, and the lower ends are connected to the second rear tie rod mounting beam 364 through a pre-drilled hole formed by the second embedded part 220. After positioning, the upper ends of the first rear tie rod 361 and the second rear tie rod 362 are tightened through the first mounting plate 364 and the first connecting piece 365 above the first rear tie rod mounting beam 363. The lower ends of the first rear tie rod 361 and the second rear tie rod 362 are tightened through the second mounting plate 367 and the second connecting piece 368 at the bottom of the second rear tie rod mounting beam 364. Nuts are preferably used for the first connecting piece 365 and the second connecting piece 368.

[0084] The first and second inclined cables 340 and 350 on both sides of the support assembly 300 are connected to the connecting plate 232 of the first embedded part 230 on the floor. The upper ends of the first and second inclined cables 340 and 350 are connected to the mounting ears on the corresponding first and second columns. The lengths of the first and second inclined cables 340 and 350 are adjustable. Specifically, a first tensioning basket 341 is set on the first inclined cable 340, and a second tensioning basket 351 is set on the second inclined cable 350. The tensioning baskets are adjusted during the process until the support assembly 300 is perpendicular to the floor.

[0085] Traction ear plates 416 and 417 are welded to both sides of the lifting beam 414 for mounting the transfer mechanism 500. The lifting beam 414 is placed on the first crossbeam 312 and the second crossbeam 322 at designated positions, and guide blocks 415 are welded to the lower ends of the lifting beam 414. To facilitate sliding, rounded corner plates are used at the bottom of the lifting beam 414, which significantly reduces sliding resistance.

[0086] Install the slewing assembly 420: Weld a bearing housing to the opening position at the center of the plane on the lifting beam 414, and install a planar thrust bearing.

[0087] Installation of limiting assembly 430: Positioning ear plates 432 are symmetrically welded at preset positions on the upper plane of lifting beam 414. Thrust ring 413 is welded to the lower plane of base 411 of lifting structure 410, and connecting ear plates 431 are welded to the side of base 411. Thrust ring 413 is fastened onto bearing seat 421, and the positioning ear plates 432 on lifting beam 414 and connecting ear plates 432 on base 411 of lifting mechanism 410 are connected by positioning connecting rod 433 and pin 434.

[0088] Install transfer mechanism 500:

[0089] Install a forward transfer mechanism: A first traction mechanism 510 is set between the first traction ear plate 416 on one side of the lifting beam 414 and the first fixed ear plate 314 on the first crossbeam 312, and a second traction mechanism 520 is set between the other traction ear plate 416 and the first fixed ear plate 324 on the second crossbeam 322. The first and second traction mechanisms are used for the horizontal forward movement of the through-type overload node 100.

[0090] The backward transfer mechanism is installed as follows: A third traction mechanism 530 is installed between the second traction lug 417 on the other side of the lifting beam 414 and the second fixed lug 1 on the first column 311, and the third traction mechanism passes through the first fixed pulley 331. A fourth traction mechanism 540 is installed between the other traction lug 417 and the second fixed lug 2 on the second column 321, and the fourth traction mechanism passes through the second fixed pulley 332. The third and fourth traction mechanisms are used for the horizontal backward movement of the through-type overloaded node 100. The first, second, third, and fourth traction mechanisms are preferably operated by hand-operated hoists.

[0091] A lifting mechanism 410, including a hydraulic pump power system, a lifting device, and sensors, is installed on the lifting beam 414. Temporary anchors for the lower lifting point and a lifting cable 412 are also installed. The lifting cable 412 passes through the central hole of the lifting beam 414 and connects to the ground-level through-type overload node 100. The lifting cable 412 is preferably made of steel strand.

[0092] In one embodiment, lifting guide components are correspondingly provided on the main structure, on the through-type heavy-duty node, and on the floor or ground where the through-type heavy-duty node is assembled, for guiding the through-type heavy-duty node during the lifting process and preventing the through-type heavy-duty node from colliding with the main structure. Specifically, the guide components include a first lifting guide component 610 and a second lifting guide component 620; the first lifting guide component and the second lifting guide component are respectively located on both sides of the through-type heavy-duty node.

[0093] In one embodiment, the first lifting guide assembly 610 and the second lifting guide assembly 620 have identical structures, each including a guide rope, a first guide rope mounting component 612, and a second guide rope mounting component 613. The guide rope 611 has its lower end positioned on the floor or ground surface of the through-type heavy-duty node assembly. The first guide rope mounting components 612 are detachably mounted on the main structure from top to bottom, perpendicular to the main structure. The highest first guide rope mounting component is located on a structural beam near the designed installation position of the through-type heavy-duty node, used to fix the upper end of the guide rope. The middle first guide rope mounting component is used for the guide rope to pass through. The second guide rope mounting components 613 are installed on both sides of the through-type heavy-duty node, and each has guide rope holes for the guide rope to pass through.

[0094] The second guide rope mounting component 613 is installed on both sides of the through-type heavy-duty node 100. The second guide rope mounting component has guide rope holes for the guide rope to pass through.

[0095] 3. Assembly of the through-type heavy-duty node 100: On the floor or ground directly below the projection plane of the installation position of the lifting and slewing mechanism, the through-type heavy-duty node 100 to be lifted is assembled in a direction parallel to the main structure 700.

[0096] IV. Lifting of the Through-Type Heavy-Duty Node 100: Using a lifting and rotating mechanism, the through-type heavy-duty node is lifted to an angled position above the designed installation location of the through-type heavy-duty node, specifically as follows:

[0097] (1) Debug the hydraulic synchronous lifting equipment, lift the through-type heavy node by 150mm, and check the connection between the various components of the hoisting device and the main structure.

[0098] (2) Lifting is paused when the height is close to the planned elevation. The actual elevation of the through-type heavy node is measured. The lifting speed is reduced and the component is lifted to close to the planned elevation. The lifting point is gradually raised to the planned elevation through the fine adjustment and jogging function of the computer system. The first lifting guide component 610, the second lifting guide component 620 and the through-type heavy node 100 are separated.

[0099] V. Rotation of the through-type heavy-duty node: The through-type heavy-duty node is rotated to be perpendicular to the main structure and locked in place using the lifting and slewing mechanism. Specifically, the connecting pin on the positioning ear plate is loosened, the lifting device is rotated to the preset angle and the connecting pin is reinstalled so that the through-type heavy-duty node reaches the specified direction.

[0100] VI. Transfer of Through-Type Heavy-Duty Node: Using a transfer mechanism, the through-type heavy-duty node is transferred to a position above the designed installation location; the through-type heavy-duty node is then lowered to the designed installation location and installed on the connection end 741 of floor 740. Specifically, the transfer of the through-type heavy-duty node is carried out by dragging, with a total of 4 hand-operated hoists for sliding the through-type heavy-duty node in both the front and rear directions. Before installation, lubricating oil is applied to the bottom of the lifting beam to reduce friction, and the front end of the lifting beam is rounded. During dragging, the speed of the hand-operated hoists on both sides is kept consistent.

[0101] In one embodiment, such as Figure 7 As shown, when the outer diameters of the main structures 700 are inconsistent, that is, the main structure includes main structure one 720 and main structure two 730 arranged from top to bottom; the outer diameter of main structure two 730 is larger than the outer diameter of main structure one 720.

[0102] The lifting and rotating mechanism is moved to the outside of the main structure II using the transfer mechanism, and the through-type heavy-duty node is lifted using the lifting mechanism.

[0103] When the through-type heavy node is lifted to the bottom of the main structure, the lifting mechanism is moved to the outside of the main structure using the transfer mechanism, and then lifted to the planned height using the lifting mechanism.

[0104] In one embodiment, a main structure first lifting guide component 721 is provided on the main structure 720 first, and a main structure second lifting guide component 731 is provided on the main structure second 730. The main structure second lifting guide component is located outside the main structure first guide component.

[0105] When the through-type heavy-duty node is located on the outside of the second main structure, the lifting and guiding components of the second main structure are used; when the through-type heavy-duty node is located on the outside of the first main structure, the lifting and guiding components of the first main structure are used.

[0106] This invention's high-altitude hoisting method is also suitable for situations where the main structure is irregularly shaped with multiple cantilevered sections. When the overweight node is lifted to the upper cantilevered section, the third and fourth traction mechanisms are used to bypass the cantilevered section before continuing the lifting, achieving backward sliding. Lifting guide assembly operation: When the through-type overweight node is lifted to the fourth embedded part 240, the connector (preferably a nut) between the first guide rope mounting plate 612 and the fourth embedded part 240 is loosened before continuing the lifting.

[0107] Example 1

[0108] A steel structure connecting corridor in a certain project is located between two main structures. The four through-type nodes of the corridor need to be installed on the roof of the main structures. A method of high-altitude hoisting of the through-type heavy-duty nodes was used to lift and position the four through-type nodes. The operation steps are as follows:

[0109] 1. Lifting equipment configuration:

[0110] (1) Based on the 12t weight of a single node, an overall model of the lifting frame was established. The first and second columns of the first and second supports were made of HW300*300*10 / 15 steel with a height of approximately 6m. The first and second crossbeams and the first and second diagonal braces were made of HW200*200*8 / 12 steel. The connecting beam between the first and second supports was made of double C12.6 channel steel. The steel profiles and channel steel were all made of Q235B steel. To balance the lifting load, the first and second rear tie rods were installed at the base of the first and second supports. The first and second rear tie rods were made of Ø30 precision rolled threaded steel with a steel material of Q355B.

[0111] (2) Based on the lifting conditions of this project, the hydraulic lifting device is configured. The total weight of the heavy node to be lifted is 12t (single node). There is a total of 1 lifting point. Each lifting point is equipped with 1 TJJ-400 hydraulic lifting device. The rated lifting capacity of a single lifting device is 40t. The total lifting capacity of the hydraulic lifting device configured in the project is 1×40t=40t. The total margin coefficient of the hydraulic lifting device is 40t / 12t=3.33.

[0112] (3) When lifting heavy nodes, a total of 1 TJV-18 hydraulic pump source system is configured, and each pump source controls 2 hydraulic lifters.

[0113] (4) In this embodiment, based on the lifting mechanism and pump source system, a YT-1 type computer synchronous control and sensing detection system is configured at the overweight node (or controlled by a manual hand device).

[0114] (5) When lifting heavy nodes, the hydraulic lifting device is equipped with 3 steel strands. The steel strands are of the same type as those used when lifting the truss structure. Therefore, the safety factor is 3×26t / 12t=6.55, which meets the requirements for safe lifting.

[0115] (6) When the heavy node is dragged horizontally, a total of 4 3t hand chain hoists are configured. Before the lifting beam is installed, the bottom needs to be coated with grease to reduce friction, and the front end of the lifting beam is rounded. When dragging, the maximum static friction coefficient is taken as 0.2, and the partial factor is taken as 1.2. Then the theoretical friction force is 12t×0.2×1.2=2.88t<6t, which meets the safety operation requirements.

[0116] (7) Design of hoisting device: Based on the arrangement of hoisting points, the steel structure platform is modeled and analyzed in stages to understand the internal force and strain of the structure body under various hoisting conditions, and the hoisting reaction force value of each hoisting point is calculated; based on the above hoisting reaction force value, the first and second supports are designed reasonably, the lower hoisting tool is designed reasonably, and the design is verified.

[0117] The rotating assembly uses planar thrust bearings, which enable the lifting mechanism to obtain a large axial load in a very small space, thus ensuring structural safety.

[0118] (8) Selection of hydraulic lifting equipment: Select a suitable combination of hydraulic lifting equipment, including hydraulic lifters and hydraulic pump stations; if multiple through-type heavy-duty nodes are installed at high altitude, the pump station can adopt a modular design, a single pump station can drive 2 lifters, and any lifting mechanism can be individually or centrally controlled; the pump station adopts a dual-pump design, so that the lifting operation can be carried out individually in the event of failure of one pump.

[0119] (9) Safety operation measures: An operating platform and railings are set up on both sides of the first and second supports to facilitate the operator to rotate the lifting mechanism to the preset angle. The hand hoist is set on the fixed ear plate on the first and second crossbeams of the hoisting device. When the component slides, the operator can drag it on the operating platform.

[0120] 2. Improve key processes

[0121] (1) Assemble the heavy node to be lifted in a suitable position directly below the design position in a direction parallel to the building. Set up the first and second supports on the structural beams around the lifting node and arrange the hydraulic lifting device as the lifting point. The original structure is connected to the lower lifting point by the lower lifting tool and ground anchor. The upper and lower lifting points are connected by steel strands. The pump station and oil pipe lifting system are tested as a whole.

[0122] (2) A fourth embedded part 240 is set every 6 floors in the main structure. A first guide rope mounting part 612 is bolted to the fourth embedded part 240. The first guide rope mounting part 612 is preferably an angle iron. A guide rope hole is machined on the first guide rope mounting part 612. A second guide rope mounting part 613 is welded to both sides of the through-type heavy-duty node. The second guide rope mounting part 613 is preferably an angle iron. A guide rope hole is machined on the second guide rope mounting part 613. The upper end of the guide rope 611 is fixed to the fourth embedded part 611 on the floor where the through-type heavy-duty node is located in the main structure. The guide rope 611 passes from top to bottom through the first guide rope mounting part on the fourth embedded part 240 at different heights and the second guide rope mounting part 613 on the through-type heavy-duty node 100. The lower end of the guide rope 611 is anchored to the ground. When the through-type heavy node is lifted to the fourth embedded part 240, the connector (preferably nut) between the first guide rope mounting plate 612 and the fourth embedded part 240 is loosened and the lifting continues.

[0123] (3) Use one set of hydraulic lifting device (lifting device model TJJ-400 hydraulic lifting device) to lift the through-type heavy node to the design elevation, or even slightly higher than the design elevation. The lifting principle is the same as the truss structure lifting. Lock the hydraulic lifting device. During the lifting process, personnel avoid collision and interference with the main frame structure by controlling the guide ropes set at both ends of the node.

[0124] (4) Using the planar thrust bearing on the lifting mechanism, rotate the through-type heavy node until it is aligned with the designed installation position (i.e., the through-type heavy node is set perpendicular to the main structure), and then fix it in a simple manner.

[0125] (5) Using the first and second traction mechanisms, the lifting mechanism, lifting beam and through-type heavy node are stretched together to the installation position to achieve forward sliding.

[0126] Compared with traditional hoisting methods, this invention effectively solves the problems of overall lifting and horizontal sliding of through-type heavy-duty nodes. Through-type heavy-duty nodes do not need to be disassembled for hoisting, and the safety risks of overall hoisting are also reduced, which has obvious technical advantages.

[0127] This invention allows for the design of the cantilever lengths of the first and second supports outside the building based on the building's outer contour, thus avoiding conflicts with the main building during lifting. The lifting mechanism is mounted on the lifting beam, facilitating the sliding and positioning of the through-type heavy-duty node.

[0128] This invention incorporates a planar thrust bearing on the lifting beam, effectively solving the problem of high-altitude rotation after lifting the through-type heavy-duty node and avoiding the situation where the steel strands cross after rotation, causing the hoisting device to malfunction.

[0129] The connection between the column bases of the first and second supports of the present invention and the first embedded part on the floor, and the connection between the two sides and the third embedded part through inclined cables, can meet the structural strength of the first and second supports and ensure the stability of the device.

[0130] All components of the hoisting device of this invention are made of conventional steel profiles, making them easy to assemble and use.

[0131] The hoisting device of this invention is lightweight and compact, making it suitable for construction sites with limited space.

[0132] This invention is not limited to the above embodiments. Based on the technical solutions disclosed in this invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. A method for high-altitude hoisting of irregularly shaped steel components, characterized by: The hoisting construction method includes: Installation of embedded components: Embedded components are installed on structural beams near the designed installation location of the irregular steel components for the installation of hoisting devices. The embedded components are isosceles trapezoidal structures. Installation of the hoisting device: The hoisting device includes a lifting and rotating mechanism, a transferring mechanism, and a support assembly; the support assembly is installed on the pre-embedded assembly on the structural beam, and the lifting and rotating mechanism and the transferring mechanism are installed on the support assembly. The lifting and rotating mechanism is used to lift and rotate the irregular steel component; the transferring mechanism is used to drive the lifting and rotating mechanism and the irregular steel component to perform linear reciprocating motion. The support assembly includes a first support and a second support; The lifting and slewing mechanism includes: The lifting beam is installed at the cantilever ends of the first and second supports; The slewing assembly is mounted on the lifting beam; A lifting mechanism is mounted on the rotary assembly; the lifting mechanism is a hydraulic lifting mechanism; a thrust ring is provided at the bottom of the base of the lifting mechanism; A limiting component, disposed on the lifting mechanism and the lifting beam, is used for positioning the lifting mechanism after rotation; the limiting component includes: A thrust ring is disposed on the base of the lifting mechanism and is fastened to the rotary assembly; Connecting lugs are symmetrically arranged on the thrust ring; Positioning ear plates are evenly distributed circumferentially on the lifting beam outside the rotary assembly; Rotating the lifting mechanism causes the connecting lug to engage with the corresponding positioning lug and a positioning connector to be provided, thereby achieving positioning and limiting of the rotating lifting mechanism; the rotary assembly includes a planar thrust bearing and a bearing housing; the thrust ring is fastened to the bearing housing; Assembly of irregular steel components: On the floor or ground directly below the projection plane of the installation position of the lifting and rotating mechanism, the irregular steel components to be lifted are assembled in a direction parallel to the main structure. Lifting of irregular steel components: Using the lifting and rotating mechanism, the irregular steel components are lifted to an oblique position above the designed installation position of the irregular steel components; Rotation of irregular steel components: The irregular steel components are rotated to a position perpendicular to the main structure using the lifting and rotating mechanism and then locked in place. Transfer of irregular steel components: Using the transfer mechanism, the irregular steel components are transferred to a position above the designed installation position of the irregular steel components; the irregular steel components are lowered to the designed installation position and installed on the structural beam.

2. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 1, characterized in that, Lifting guide components are correspondingly installed on the main structure, on the irregular steel components, and on the floor or ground where the irregular steel components are assembled, to guide the irregular steel components during the lifting process and to prevent the irregular steel components from colliding with the main structure. The guiding components include a first lifting guiding component and a second lifting guiding component; the first lifting guiding component and the second lifting guiding component are respectively located on both sides of the irregular steel component.

3. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 2, characterized in that, The first lifting guide component and the second lifting guide component have the same structure, both including: Guide rope, the lower end of which is set on the floor or ground where the irregular steel components are assembled; The first guide rope mounting pieces are detachably installed on the main structure from top to bottom, and are vertically installed between the first guide rope mounting pieces and the main structure; the highest first guide rope mounting piece is located on a structural beam near the designed installation position of the irregular steel component, and is used to fix the upper end of the guide rope; the middle first guide rope mounting piece is used for the guide rope to pass through. The second guide rope mounting component is disposed on both sides of the irregular steel component. The second guide rope mounting component is machined with guide rope holes for the guide rope to pass through.

4. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 2, characterized in that, When the outer diameters of the main structures are inconsistent, that is, the main structure includes a main structure one and a main structure two arranged from top to bottom; the outer diameter of the main structure two is larger than the outer diameter of the main structure one; The lifting and rotating mechanism is moved to the outside of the main structure two using a transfer mechanism, and the irregular steel component is lifted using the lifting and rotating mechanism. When the irregular steel component is lifted to the bottom of the main structure, the lifting and rotating mechanism is reversed to the outside of the main structure and then lifted to the planned height using the lifting and rotating mechanism.

5. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 4, characterized in that, A lifting guide component for main structure one is provided on main structure one, and a lifting guide component for main structure two is provided on main structure two. The lifting guide component for main structure two is located outside the lifting guide component for main structure one. When the irregular steel component is located on the outside of the second main structure, the lifting and guiding assembly of the second main structure is used; When the irregularly shaped steel component is located on the outside of the main structure, the main structure lifting guide assembly is used.

6. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 1, 2, 3 or 4, characterized in that, The embedded components include: The first embedded part is set on the structural beam where the irregular steel component is designed to be installed, and is located on both sides of the designed installation position of the irregular steel component, for installing the bracket assembly; there are two first embedded parts; The second embedded part is set on the second structural beam inside the structural beam where the irregular steel component is designed to be installed, and is used as a counterweight for the hoisting device; there are two second embedded parts; the second embedded parts are located at the two vertices of the upper base of the isosceles trapezoidal embedded component; The third embedded part is set on the structural beam where the irregular steel component is designed and installed, and is located outside the first embedded part, and is used to adjust the verticality of the support assembly; there are two third embedded parts; the third embedded parts are located at the two vertices of the lower base of the isosceles trapezoidal structure embedded assembly.

7. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 6, characterized in that, The first bracket is installed on the first embedded part; the first bracket is connected to the third embedded part via the first cable-stayed bridge; The second bracket is installed on the first embedded part two, and the second bracket is arranged parallel to the first bracket. The second bracket is connected to the first bracket via a connecting beam; the second bracket is connected to the third embedded part two via a second cable. The first rear tie rod mounting beam is vertically installed above the second structural beam; The second rear tie rod mounting beam is set at the bottom of the second structural beam and below the second embedded part, and is located in the orthogonal projection direction of the first rear tie rod mounting beam; The rear tie rod has its upper end mounted on the first rear tie rod mounting beam, and its lower end passes through a second embedded part on the floor and is connected to the second rear tie rod mounting beam.

8. The method for high-altitude integral hoisting construction of irregularly shaped steel components according to claim 7, characterized in that, Both the first embedded part one and the first embedded part two include an embedded plate, and the bottom of the embedded plate is provided with symmetrically arranged L-shaped ribs to form a π-shaped structure; the embedded plate is connected to the first bracket or the second bracket; The second embedded part is an embedded sleeve, which is vertically installed in the floor layer to form a reserved through hole for the rear railing to pass through; Both the third embedded part one and the third embedded part two include an mounting plate, a connecting plate, and an L-shaped rib. The mounting plate is provided with a connecting plate, and two L-shaped ribs are symmetrically arranged at the bottom of the mounting plate to form a π-shaped structure. The connecting plate is connected to the corresponding stay cable. The length of the stay cable is adjustable.

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