Large steel truss hoisting system and using method

Abstract

The invention relates to the technical field of hoisting devices, particularly provides a large steel truss hoisting system and a using method, and aims to solve the technical problems that in a traditional large steel truss hoisting mode, truss stress is uneven, clamping reliability is insufficient, gravity center adjustment of hoisting equipment is lagged, clamping layout is unreasonable, and instability is prone to occurring in the hoisting process. In order to achieve the purpose, according to the large steel truss hoisting system, the cross beam, the clamping assemblies and the balance blocks are arranged, the balance blocks can slide on the cross beam, and standard operation steps are combined, so that multi-point uniform clamping of the large steel truss can be achieved, the gravity center change of the truss in the hoisting process is dynamically adapted, and shaking and deviation of the truss are effectively limited; the safety, stability and accuracy of hoisting operation are improved, local deformation and hoisting instability of the truss are avoided, the hoisting requirements of large steel trusses in large-span buildings, bridges and large venue projects are met, and the construction quality and progress are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, specifically to a large steel truss hoisting system and its usage method. Background Technology

[0002] Large steel trusses are core load-bearing components in long-span buildings, bridges, and large stadiums. The safety and stability of their hoisting operations directly affect the construction quality and progress. Traditional hoisting methods often use single lifting points or simple lifting tools, which are difficult to match the long dimensions and heavy weight of large steel trusses. This can easily lead to uneven stress and local deformation of the truss, and the clamping reliability is insufficient, failing to meet the requirements of high precision and high safety in hoisting.

[0003] Existing hoisting equipment generally suffers from problems such as lagging center of gravity adjustment and unreasonable clamping layout. The balancing components are mostly fixed and cannot dynamically adapt to changes in the center of gravity of the truss during hoisting, which can easily lead to the skew of the hoisting beam and overall instability. At the same time, the clamping components are mostly arranged at single points or in a disordered manner, making it difficult to achieve multi-point uniform clamping. The adaptability and stability are poor, which seriously restricts the efficiency and safety assurance of hoisting large steel trusses. Summary of the Invention

[0004] To overcome the above-mentioned defects, embodiments of the present invention provide a large steel truss hoisting system and its usage method, which solves the technical problems of uneven truss stress, insufficient clamping reliability, lagging center of gravity adjustment of hoisting equipment, unreasonable clamping layout, and easy instability during hoisting in traditional large steel truss hoisting methods.

[0005] According to one aspect, at least one embodiment of the present invention provides a large steel truss hoisting system, comprising: A crossbeam, on which hooks are provided, and several hanging rods are provided at intervals below the crossbeam; A clamping assembly is provided, and each clamping assembly corresponds to a lower hanging rod. The clamping assembly is suspended on the lower hanging rod. Each clamping assembly includes a connecting rod and a plurality of clamps spaced apart on the connecting rod. The clamps are capable of clamping the truss. A counterweight is slidably mounted on the crossbeam and is used to balance the center of gravity of the crossbeam during the hoisting of the truss.

[0006] According to one embodiment of this application, the clamping assembly further includes two suspension ropes, one end of each suspension rope being detachably mounted on the lower hanging rod, and the other end of each suspension rope being mounted on the connecting rod, and the two suspension ropes being arranged in a figure-eight shape.

[0007] According to one embodiment of this application, the crossbeam is an I-beam, and the counterweight includes: Mounting base, wherein the mounting base slides against the top surface of the crossbeam; The pulley system has two sets, which are symmetrically arranged about the crossbeam and are both located below the mounting base. The pulley systems are located in the recessed areas on both sides of the crossbeam. A brake component is mounted on the pulley block.

[0008] According to one embodiment of this application, the crossbeam is provided with extension rods at both ends, and a steel wire rope is provided between the ends of the two extension rods away from the crossbeam. A plurality of auxiliary connecting blocks are provided at intervals on the steel wire rope. The auxiliary connecting blocks are used to connect the cable to limit the truss by means of the inclined cable.

[0009] According to one embodiment provided in this application, the clamp includes: The mounting block is detachably mounted on the connecting rod; A scissor lift is disposed at the bottom of the mounting block. The scissor lift has two movable ends, each of which is provided with an abutment plate. The two abutment plates are arranged opposite to each other, and the scissor lift can control the two abutment plates to clamp the truss.

[0010] According to one embodiment of this application, the clamping assembly is further provided with a limiting post and a limiting hook. After the limiting hook is connected to the limiting post, the scissor lift can be in an open state. When the limiting hook and the limiting post are disconnected, during hoisting, under the action of gravity, the scissor lift can clamp the two abutment plates together to clamp the truss.

[0011] According to one embodiment of this application, the abutment plate is an angle steel, and the openings of the two abutment plates are arranged opposite to each other.

[0012] According to one embodiment of this application, the connecting rod is provided with a snap-fit ​​groove, and the mounting block is snapped into and limited by the snap-fit ​​groove.

[0013] According to one embodiment of this application, both ends of the crossbeam are provided with limiting members to prevent the balance block from slipping off.

[0014] According to another aspect, at least one embodiment of the present invention also provides a method of using a hoisting system, comprising the following steps: S1, Control the clamping fixture to clamp the truss; S2. Adjust the position of the balance weights to make the crossbeam horizontal, and lock the balance weights to the crossbeam using the brake assembly; S3. Connect the cables on the auxiliary connecting block to the truss; S4. Lifting truss.

[0015] This invention provides a large steel truss hoisting system and its usage method. In use, the entire hoisting system is first connected and fixed to the hoisting equipment via hooks on the crossbeams. Then, according to the structural distribution of the large steel truss, the clamps corresponding to each clamping component are aligned with the preset clamping positions on the truss, and the clamps are controlled to clamp the truss, completing the clamping and fixing of the truss. During the hoisting of the truss, if the crossbeam is found to be skewed or the center of gravity is unbalanced, the balance blocks on the crossbeam are slid to adjust their positions until the crossbeam returns to a horizontal state, maintaining overall hoisting balance. The truss is then smoothly hoisted to the designated position. This solves the problems of uneven force distribution and localized deformation of the truss caused by traditional hoisting methods using single lifting points or simple lifting tools. By setting multiple clamping components corresponding to the lower hanging rods, multi-point clamping of the truss is achieved, improving clamping reliability. The adjustable counterweights can dynamically adapt to changes in the truss's center of gravity during hoisting, preventing beam skewing and overall instability. This meets the high-precision and high-safety requirements for hoisting large steel trusses and improves the safety and stability of hoisting operations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0017] Figure 1 This is a structural schematic diagram of a large steel truss hoisting system and its usage method according to an embodiment of the present invention; Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle; Figure 3 For the present invention Figure 1 A magnified view of a section at point B in the middle; Figure 4 For the present invention Figure 1 A magnified view of a section at point C.

[0018] In the diagram: 1. Crossbeam, 2. Lifting hook, 3. Lower hanging rod, 4. Clamping assembly, 41. Connecting rod, 410. Snap-fit ​​groove, 42. Clamp, 421. Mounting block, 422. Scissor lift assembly, 423. Abutment plate, 424. Limiting post, 425. Limiting hook, 43. Lifting rope, 5. Balance block, 51. Mounting seat, 52. Pulley block, 6. Extension rod, 7. Wire rope, 8. Limiting connecting block, 9. Limiting component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0023] To make the drawings concise and easy to understand, some drawings only show one of the components with the same structure or function, or only one of them is marked. In this article, "one" not only means "only one", but can also mean "more than one", and "several" includes "two" and "more than two".

[0024] Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. It is understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1-4 As shown, this invention illustrates a large steel truss hoisting system according to an embodiment of the present invention, comprising three core parts: a crossbeam 1, clamping components 4, and counterweights 5. The crossbeam 1 is equipped with hooks 2 for connecting to external hoisting equipment, and multiple lower hanging rods 3 are arranged at certain intervals below the crossbeam 1. The number of clamping components 4 is consistent with the number of lower hanging rods 3, with each clamping component 4 suspended on a corresponding lower hanging rod 3. Each clamping component 4 consists of a connecting rod 41 and multiple clamps 42, which are installed on the connecting rod 41 at intervals, and each clamp 42 has the ability to stably clamp the truss. The counterweights 5 are installed on the crossbeam 1 and can slide freely along the length of the crossbeam 1, their position adjustable according to the actual hoisting situation.

[0026] In the above scheme, during use, the entire hoisting system is first connected and fixed to the hoisting equipment via the hooks 2 on the crossbeam 1. Then, according to the structural distribution of the large steel truss, the clamps 42 corresponding to each clamping component 4 are aligned with the preset clamping positions of the truss, and the clamps 42 are controlled to clamp the truss, completing the clamping and fixing of the truss. During the hoisting of the truss, if the crossbeam 1 is found to be tilted or the center of gravity is unbalanced, the balance block 5 on the crossbeam 1 is slid to adjust the position of the balance block 5 until the crossbeam 1 returns to a horizontal state, maintaining the overall hoisting balance. Then, the truss is smoothly hoisted to the designated position. This solves the problem of uneven force and local deformation of the truss caused by the use of single lifting points or simple lifting tools in traditional hoisting methods. By setting multiple clamping components 4 one-to-one with the lower hanging rod 3, multi-point clamping of the truss is achieved, improving the reliability of clamping. The adjustable balance block 5 can dynamically adapt to changes in the truss's center of gravity during hoisting, preventing the crossbeam 1 from tilting and the overall instability, meeting the high-precision and high-safety hoisting requirements of large steel trusses, and improving the safety and stability of hoisting operations.

[0027] Furthermore, two suspension ropes 43 were added to the clamping assembly 4 and the crossbeam 1. One end of each suspension rope 43 is detachably connected to the lower hanging rod 3, and the other end is fixed to the connecting rod 41. After being connected, the two suspension ropes 43 are arranged in a figure-eight shape to form a stable suspension structure, which securely suspends the clamping assembly 4 below the lower hanging rod 3.

[0028] In the above scheme, when assembling the clamping assembly 4, one end of each of the two lifting ropes 43 is installed on the lower hanging rod 3 to ensure a firm and detachable connection. Then, the other ends of the two lifting ropes 43 are simultaneously fixed to the corresponding positions on the connecting rod 41, so that the two lifting ropes 43 naturally form a figure-eight shape. The clamping assembly 4 is suspended from the lower hanging rod 3 by these two figure-eight-shaped lifting ropes 43. Subsequently, the clamps 42 on the connecting rod 41 are controlled to clamp the truss. During the hoisting process, the figure-eight-shaped lifting ropes 43 evenly distribute the weight of the truss. With the adjustment of the balance block 5, the stability of the clamping assembly 4 is maintained, preventing the clamping assembly 4 from shaking or shifting.

[0029] The figure-eight arrangement of the lifting ropes 43 effectively distributes the weight of the clamping component 4 and the truss, preventing excessive stress on a single rope 43 and thus improving the stability and safety of the clamping component 4. The lifting ropes 43 are detachable, facilitating the disassembly, inspection, and replacement of the clamping component 4. Simultaneously, the figure-eight structure limits the lateral swaying of the clamping component 4 during hoisting, further enhancing the stability of the truss clamping, reducing localized stress caused by swaying, and preventing localized deformation.

[0030] Furthermore, the crossbeam 1 adopts an I-beam structure, possessing strong load-bearing capacity and structural stability. The balance block 5 consists of a mounting base 51, a pulley block 52, and a brake. The mounting base 51 is fitted against the top surface of the crossbeam 1, allowing it to slide smoothly and fit snugly along the top surface of the crossbeam 1. Two sets of pulley blocks 52 are provided, symmetrically arranged around the crossbeam 1, and both are installed below the mounting base 51. The pulley blocks 52 fit precisely into the recessed areas on both sides of the crossbeam 1. The brake is installed on the pulley blocks 52, controlling their rotation and thus locking the balance block 5 in place.

[0031] In the above scheme, the balance block 5 is attached to the top surface of the I-beam beam 1 via the mounting base 51. Two sets of symmetrically arranged pulley blocks 52 are embedded in the recessed areas on both sides of the beam 1, allowing the balance block 5 to slide smoothly along the beam 1. During the hoisting of the truss, when the beam 1 becomes skewed, the mounting base 51 is pushed, causing the pulley blocks 52 to slide within the recessed areas of the beam 1, adjusting the position of the balance block 5 on the beam 1 until the beam 1 returns to a horizontal position. After adjustment, the brake is operated, causing it to act on the pulley blocks 52, restricting their rotation, thereby locking the balance block 5 in its current position and preventing it from sliding and causing the center of gravity to become unbalanced again.

[0032] The structural design of the I-beam beam 1 enhances the load-bearing capacity of the entire hoisting system, enabling it to meet the heavy weight requirements of large steel trusses. Two symmetrically arranged pulley systems 52 are fitted into the recessed area of ​​the beam 1, allowing the counterweight 5 to slide more smoothly and preventing it from shifting during sliding, thus improving the accuracy and efficiency of center of gravity adjustment. The brake mechanism quickly locks after the counterweight 5 is adjusted to its correct position, preventing accidental slippage and solving the problem of delayed center of gravity adjustment in existing hoisting equipment. This ensures that the beam 1 remains level during hoisting, preventing overall instability and improving hoisting safety.

[0033] Furthermore, extension rods 6 are installed at both ends of the crossbeam 1, extending outwards from the crossbeam 1. A steel wire rope 7 is connected between the ends of the two extension rods 6 furthest from the crossbeam 1, and the steel wire rope 7 is in a taut state, forming a stable transverse structure. Multiple auxiliary connecting blocks are installed on the steel wire rope 7 at certain intervals. Each auxiliary connecting block has the function of connecting a cable, which connects to the truss to achieve oblique limiting of the truss.

[0034] In the above scheme, during assembly, the extension rods 6 are first installed at both ends of the crossbeam 1 to ensure a firm connection. Then, the wire ropes 7 are tightened and fixed to the ends of the two extension rods 6, forming a stable frame structure with the crossbeam 1. Subsequently, a cable is connected to the auxiliary connecting block on the wire rope 7, and the other end of the cable is connected and fixed to the corresponding position of the truss to form a cable-stayed structure. During the hoisting of the truss, the cable-stayed structure applies a lateral limiting force to the truss through the auxiliary connecting block and the wire rope 7, restricting the truss's left and right swaying and front and back offset. Together with the clamping assembly 4 and the balance block 5, it maintains the stability of the truss.

[0035] The transverse frame structure composed of extension rod 6 and wire rope 7 expands the limiting range. The inclined stay cables connected by the auxiliary connecting blocks can limit the truss in all directions, effectively preventing the truss from swaying left and right or shifting forward and backward during hoisting, thus solving the problem of insufficient truss limiting in existing hoisting equipment. The inclined limiting structure can further improve the stability of truss hoisting, avoid local deformation and uneven stress caused by truss swaying, and reduce the risk of truss falling off during hoisting, thereby improving the safety and accuracy of hoisting operations.

[0036] Furthermore, the clamp 42 consists of a mounting block 421, a scissor lift member 422, and an abutment plate 423. The mounting block 421 is detachably mounted on the connecting rod 41, facilitating the installation, disassembly, and position adjustment of the clamp 42. The scissor lift member 422 is mounted on the bottom of the mounting block 421 and has two movable ends. An abutment plate 423 is mounted on each of the two movable ends. The two abutment plates 423 are positioned correspondingly. The scissor lift member 422 can move the two abutment plates 423 closer together or further apart through its telescopic movement, thereby clamping and releasing the truss.

[0037] In the above scheme, when installing the clamp 42, the mounting block 421 is fixed at the preset position of the connecting rod 41 to ensure a firm connection. When clamping the truss, the scissor lift 422 is controlled to move, causing the two movable ends of the scissor lift 422 to move closer together, which in turn drives the two oppositely arranged abutment plates 423 to move closer together until the abutment plates 423 are tightly attached to the surface of the truss, thus clamping and fixing the truss. When it is necessary to release the truss, the scissor lift 422 is controlled to move in the opposite direction, causing the two movable ends to move away from each other, which causes the abutment plates 423 to separate from the truss surface, thus releasing the truss. The detachable mounting block 421 facilitates the adjustment of the position of the clamp 42 on the connecting rod 41 according to the structure of the truss, improving the adaptability of the clamp 42 and enabling it to adapt to large steel trusses of different sizes and structures. The scissor lift 422, which drives the abutment plate 423 to clamp the truss, ensures that the two abutment plates 423 apply clamping force evenly, achieving stable clamping of the truss and avoiding uneven force and local deformation caused by single-point clamping. The abutment plate 423 is in close contact with the truss surface, increasing the clamping contact area, improving clamping reliability, preventing the truss from falling off during hoisting, and meeting high-safety hoisting requirements.

[0038] Furthermore, a limit post 424 and a limit hook 425 are provided on the scissor lift 422 for mutual cooperation. The limit hook 425 can be connected and fixed to the limit post 424. When the limit hook 425 is connected to the limit post 424, it can limit the scissor lift 422, keeping it in the open state, at which time the two abutment plates 423 are in a position away from each other. When the limit hook 425 is disconnected from the limit post 424, the scissor lift 422 is no longer subject to the limit constraint. During the lifting process, relying on the gravity of the truss, the scissor lift 422 can automatically drive the two abutment plates 423 to move closer to each other, thereby clamping the truss.

[0039] In the above scheme, before clamping the truss, the limiting hook 425 is connected and fixed to the limiting post 424, keeping the scissor lift 422 in the open state and the two abutment plates 423 far apart, making it easy to align the clamp 42 with the clamping position of the truss. After adjusting the clamp 42 to the appropriate position, the connection between the limiting hook 425 and the limiting post 424 is removed, and the scissor lift 422 loses its limiting constraint. At this time, the weight of the truss acts on the scissor lift 422, causing the two movable ends of the scissor lift 422 to move closer together, thereby making the two abutment plates 423 tightly clamp the truss. During the hoisting process, the weight of the truss always acts on the scissor lift 422, ensuring that the abutment plates 423 continuously clamp the truss. When hoisted to the designated position, the limiting hook 425 is connected to the limiting post 424 again, causing the scissor lift 422 to open and the abutment plates 423 to release, completing the placement of the truss.

[0040] The cooperation of the limiting post 424 and the limiting hook 425 ensures that the scissor lift 422 remains open before clamping the truss, facilitating quick alignment of the clamp 42 with the truss clamping position and improving the convenience and efficiency of the clamping operation. During hoisting, the scissor lift 422 automatically clamps using the truss's own weight, eliminating the need for additional power control and saving energy. It also ensures that the clamping force is always appropriate to the truss weight, preventing insufficient clamping force from causing truss loosening or excessive clamping force from causing truss deformation. This structure further enhances the reliability of clamping and the convenience of operation, reducing the labor intensity of operators.

[0041] Furthermore, the abutment plate 423 in the clamp 42 adopts an angle steel structure. The opening directions of the two abutment plates 423 are arranged opposite each other. The shape of the angle steel can be adapted to the corner structure of the truss, so that the abutment plate 423 can better fit the surface of the truss and increase the clamping contact area. At the same time, the angle steel has strong structural strength and can withstand large clamping force and the weight of the truss.

[0042] In the above scheme, when clamping the truss, the scissor lift 422 is controlled to move two opposing angle steel abutment plates 423 closer together, so that the inner surfaces of the angle steels fit against the corners of the truss. The shape of the angle steels adapts to the corners of the truss, ensuring a tight fit between the abutment plates 423 and the truss, achieving a secure clamping of the truss. During hoisting, the angle steel abutment plates 423 remain in close contact with the corners of the truss, evenly distributing the clamping force and restricting the movement of the truss. Once hoisted to the designated position, the scissor lift 422 is controlled to move the abutment plates 423 away from the truss, completing the release operation.

[0043] The angle steel abutment plate 423 boasts high structural strength, capable of withstanding the heavy weight and clamping force of large steel trusses. It is resistant to deformation, thus extending the service life and clamping reliability of the clamp 42. The opposing opening arrangement precisely matches the corner structure of the truss, increasing the clamping contact area and ensuring more even clamping force, preventing excessive localized stress that could lead to truss deformation. Simultaneously, the interlocking action of the angle steel further restricts truss slippage, preventing truss displacement or detachment during hoisting, thereby enhancing the stability and safety of the hoisting operation.

[0044] Furthermore, a snap-fit ​​groove 410 is provided on the connecting rod 41 of the clamping assembly 4. The snap-fit ​​groove 410 is arranged along the length direction of the connecting rod 41. The mounting block 421 of the clamp 42 is adapted to the snap-fit ​​groove 410. The mounting block 421 can be snapped into the snap-fit ​​groove 410 to realize the snap-fit ​​limit between the mounting block 421 and the connecting rod 41, ensuring that the position of the mounting block 421 on the connecting rod 41 is fixed, and at the same time, it is convenient for the mounting block 421 to adjust the installation position in the snap-fit ​​groove 410.

[0045] In the above scheme, when installing the clamp 42, according to the clamping requirements of the truss, the mounting block 421 is aligned with the preset position of the locking groove 410 on the connecting rod 41, and the mounting block 421 is inserted into the locking groove 410, so that the mounting block 421 and the locking groove 410 fit tightly together, thereby limiting and fixing the mounting block 421 and ensuring that the mounting block 421 will not slide freely on the connecting rod 41. When it is necessary to adjust the position of the clamp 42, the mounting block 421 is removed from the locking groove 410, adjusted to a suitable position, and then the mounting block 421 is inserted into the locking groove 410 again for fixation. When clamping the truss, the mounting block 421 remains stable under the limiting action of the locking groove 410, which drives the clamp 42 to smoothly clamp the truss.

[0046] The snap-fit ​​limiting structure between the snap-fit ​​groove 410 and the mounting block 421 enables rapid installation and fixation of the mounting block 421, facilitating operation and improving the assembly efficiency of the clamp 42. Simultaneously, this structure ensures the precise and stable positioning of the mounting block 421 on the connecting rod 41, preventing slippage of the mounting block 421 during hoisting and thus avoiding clamp 42 displacement, which in turn prevents loosening or uneven stress on the truss. The mounting block 421 can be adjusted within the snap-fit ​​groove 410, allowing the clamp 42 to flexibly adjust its clamping position according to the truss structure, improving the adaptability of the clamp 42 and enabling it to accommodate large steel trusses of different sizes and structures.

[0047] Furthermore, limiters 9 are installed at both ends of the crossbeam 1. These limiters 9 are fixed to the ends of the crossbeam 1, and their structural dimensions are larger than the sliding range of the counterweight 5. They effectively block the sliding counterweight 5, preventing it from slipping off the end of the crossbeam 1 due to excessive sliding distance during adjustment, ensuring that the counterweight 5 always slides on the crossbeam 1. The limiters 9 effectively solve the problem of potential slippage of the counterweight 5 during sliding, avoiding a sharp imbalance of the crossbeam 1's center of gravity due to counterweight 5 slippage, which could lead to hoisting accidents and improve the safety of the hoisting system. At the same time, the limiters 9 do not affect the normal sliding adjustment of the counterweight 5 within the effective range of the crossbeam 1, ensuring that the counterweight 5 can flexibly adjust its position according to hoisting requirements, guaranteeing the horizontal stability of the crossbeam 1, and further enhancing the safety assurance capability of large steel truss hoisting operations.

[0048] At least one embodiment of the present invention also provides a method of using a hoisting system, comprising the following steps: S1, control clamp 42 clamps the truss; S2. Adjust the position of the balance block 5 to make the crossbeam 1 horizontal, and lock the balance block 5 to the crossbeam 1 through the brake assembly; S3. Connect the cables on the auxiliary connecting block to the truss; S4. Lifting truss.

[0049] Specifically, following the preset steps, the truss clamping, center of gravity balance adjustment, limit fixing, and hoisting operations are completed sequentially. The steps are closely linked and the operation is standardized, which can give full play to the structural advantages of the hoisting system and ensure that the hoisting operation is carried out in an orderly manner.

[0050] First, control the movement of clamp 42 in the hoisting system to ensure it tightly clamps the large steel truss, guaranteeing a secure hold without any loosening. Then, slide the counterweight 5 on the crossbeam 1, observe its horizontal position, and adjust the position of the counterweight 5 until the crossbeam 1 is level. Once adjusted, lock the counterweight 5 to the crossbeam 1 using the braking assembly to prevent slippage. Next, connect and fix the auxiliary connecting block's cable on the wire rope 7 to the truss, forming an oblique limiting structure to omnidirectionally limit the truss. Finally, start the hoisting equipment and smoothly lift the truss to the designated position, completing the hoisting operation.

[0051] This method offers clear and standardized steps, guiding operators smoothly through hoisting operations, reducing the probability of errors, and improving efficiency. By first clamping, then balancing, then limiting, and finally lifting, the method ensures the truss remains stable throughout the hoisting process, preventing issues such as imbalance, truss swaying, or detachment caused by improper operational sequence. This method fully utilizes the structural advantages of the hoisting system, effectively solving the problems of low efficiency and poor safety in traditional hoisting methods, ensuring high precision and safety in the hoisting of large steel trusses, and guaranteeing construction quality and schedule.

[0052] 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 large steel truss hoisting system, characterized in that, include: A crossbeam (1) is provided with a hook (2) and a number of hanging rods (3) are provided at intervals below the crossbeam (1). The clamping assembly (4) has several components, and each clamping assembly (4) corresponds to one of the lower hanging rods (3). The clamping assembly (4) is suspended on the lower hanging rods (3). The clamping assembly (4) includes a connecting rod (41) and several clamps (42) spaced apart on the connecting rod (41). The clamps (42) are capable of clamping the truss. A counterweight (5) is slidably mounted on the crossbeam (1). The counterweight (5) is used to balance the center of gravity of the crossbeam (1) during the hoisting of the truss.

2. The large steel truss hoisting system according to claim 1, characterized in that, The clamping assembly (4) also includes two suspension ropes (43). One end of each suspension rope (43) can be detachably mounted on the lower hanging rod (3), and the other end is mounted on the connecting rod (41). The two suspension ropes (43) are arranged in a figure-eight shape.

3. The large steel truss hoisting system according to claim 1, characterized in that, The crossbeam (1) is an I-beam, and the balance block (5) includes: Mounting base (51), the mounting base (51) slides against the top surface of the crossbeam (1); The pulley system (52) has two sets, which are symmetrically arranged about the crossbeam (1) and are both located below the mounting base (51). The pulley system (52) is located in the recessed areas on both sides of the crossbeam (1). A brake is provided on the pulley block (52).

4. A large steel truss hoisting system according to claim 1, characterized in that, The beam (1) has extension rods (6) at both ends. A steel wire rope (7) is provided between the ends of the two extension rods (6) away from the beam (1). Several auxiliary connecting blocks (8) are provided on the steel wire rope (7) at intervals. The auxiliary connecting blocks (8) are used to connect the cable to limit the truss by the cable.

5. A large steel truss hoisting system according to claim 1, characterized in that, The clamp (42) includes: The mounting block (421) is detachably mounted on the connecting rod (41); A scissor lift (422) is disposed at the bottom of the mounting block (421). The scissor lift (422) has two movable ends, and each movable end is provided with an abutment plate (423). The two abutment plates (423) are arranged opposite to each other. The scissor lift (422) can control the two abutment plates (423) to clamp the truss.

6. A large steel truss hoisting system according to claim 5, characterized in that, The clamping assembly (4) is also provided with a limiting post (424) and a limiting hook (425). After the limiting hook (425) is connected to the limiting post (424), the scissor lift (422) can be in the open state. When the limiting hook (425) and the limiting post (424) are disconnected, during hoisting, under the action of gravity, the scissor lift (422) can make the two abutment plates (423) clamp the truss.

7. A large steel truss hoisting system according to claim 5, characterized in that, The abutment plate (423) is an angle steel, and the openings of the two abutment plates (423) are arranged opposite to each other.

8. A large steel truss hoisting system according to claim 5, characterized in that, The connecting rod (41) has a snap-fit ​​groove (410), and the mounting block (421) snaps into and limits the engagement with the snap-fit ​​groove (410).

9. A large steel truss hoisting system according to claim 1, characterized in that, Both ends of the crossbeam (1) are provided with limiting members (9) to prevent the balance block (5) from slipping.

10. A method of using a hoisting system, comprising a large steel truss hoisting system according to any one of claims 1-9, characterized in that, Includes the following steps: S1, control clamp (42) to clamp the truss; S2. Adjust the position of the balance block (5) to make the crossbeam (1) horizontal, and lock the balance block (5) to the crossbeam (1) by means of the brake assembly; S3. Connect the cable on the auxiliary connecting block (8) to the truss; S4. Lifting truss.

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