A hoisting device for preventing a steel truss girder from swinging

Abstract

The utility model relates to hoisting device technical field more specifically, relate to a hoisting device for preventing steel truss sway, include: with the hoisting structure that caterpillar belt crane cable structure is connected, the hook structure for hoisting steel truss is connected in swing to the hoisting structure, and the damping buffer structure is equipped between hook structure and hoisting structure, the damping tank of a plurality of damping oil liquid that is equipped with is arranged to the both sides of hoisting structure, and the damping tank of a plurality of damping oil liquid that is equipped with is arranged to the both sides of hoisting structure, and two cable restraint structures are connected to the other two sides of hoisting structure, and two cable restraint structures are matched to the both sides of cable structure. Set up damping buffer structure between hook structure and hoisting structure, can absorb the impact and low frequency small amplitude sway that steel truss generates in hoisting instant or micro - movement, avoid the damage that impact and sway caused to hoisting device and steel truss, can also reduce the sway amplitude of steel truss, improve the stability of hoisting process.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and more specifically, to a lifting device for preventing steel truss beams from swaying. Background Technology

[0002] Traditional lifting devices present numerous problems in steel truss girder hoisting operations. During the lifting process, existing devices are prone to pendulum-like, large-amplitude swaying when the steel truss girder is subjected to external disturbances. Furthermore, the steel truss girder experiences impacts and low-frequency, small-amplitude swaying during the moment of lifting or even minor movements. If not effectively managed, this not only affects the stability and accuracy of the lifting operation but may also pose safety hazards to the lifting equipment, the surrounding environment, and personnel. Simultaneously, the inherent fluctuations transmitted through the lifting cables exacerbate the swaying of the steel truss girder, making it difficult to meet the requirements for safe and stable lifting of steel truss girders. Utility Model Content

[0003] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, this utility model provides a lifting device for preventing the swaying of a steel truss, comprising: a lifting structure connected to the cable structure of a crawler crane; a hook structure movably connected to the lifting structure for lifting the steel truss; a damping buffer structure between the hook structure and the lifting structure; multiple damping boxes containing damping oil arranged opposite each other on both sides of the lifting structure; and two cable suppression structures connected opposite each other on the other two sides of the lifting structure, the two cable suppression structures engaging with each other on both sides of the cable structure.

[0005] Furthermore, the lifting structure includes: a lifting body, with two lifting rollers arranged side by side rotatably connected above the lifting body; the cable structure includes: a lifting steel belt wound around the bottom of the two lifting rollers, and a cable body connected to the crawler crane, with both ends of the lifting steel belt fixed to the lifting seat at the bottom of the cable body.

[0006] Furthermore, the hook structure includes: a hook top plate that slides longitudinally in the middle slide rail of the hoisting body, the bottom of the hook top plate being connected to a hook column that slides in the longitudinal through hole at the bottom of the hoisting body, and the bottom of the hook column being connected to the hook body for hoisting the steel truss beam; the damping buffer structure includes: an elastic damping element that is disposed between the hook top plate and the bottom surface of the middle slide rail of the hoisting body.

[0007] Furthermore, the elastic damping component includes: a damping spring sleeved on the hanging column, with both ends of the damping spring abutting against the hanging top plate and the bottom surface of the middle slide, respectively.

[0008] Furthermore, the two ends of the damping spring are fixedly connected to the top plate and the bottom surface of the middle slide, respectively.

[0009] Furthermore, the top plate of the hanging device is provided with a through horizontal hole, and an auxiliary horizontal beam is connected inside the through horizontal hole. The auxiliary horizontal beam is slidably fitted in the longitudinal limiting grooves on both sides of the hoisting body.

[0010] Furthermore, it also includes: two auxiliary damping structures connected to both ends of the auxiliary crossbeam; the auxiliary crossbeam is slidably installed in the through-hole; the auxiliary damping structure includes: a guide shaft with its top inserted in the longitudinal hole of the auxiliary crossbeam, a retaining ring slidably connected on the guide shaft abutting against the lower surface of the auxiliary crossbeam, and a stop block fixed to the bottom of the guide shaft being detachably connected to the side of the hoisting body by bolts; the retaining ring and the stop block are connected by a damping spring sleeved on the guide shaft.

[0011] Furthermore, the cable restraint structure includes: a curved swing arm rotatably connected to the side of the hoisting body in the middle, the upper end of the curved swing arm being rotatably connected to an abutment seat for abutting against the cable body, and multiple tension springs fixed between the lower end of the curved swing arm and the side of the hoisting body.

[0012] Furthermore, a V-shaped groove is provided on the contact surface between the contact seat and the steel cable body.

[0013] Furthermore, a rubber damping pad is glued into the V-shaped groove.

[0014] Furthermore, two mounting slots are provided at opposite ends of the top plate, and two top pressure blocks are inserted into the two mounting slots. The locking rod screwed to the top plate is inserted into the locking hole of the top pressure block. The outer side of the top pressure block is provided with a top pressure slope that slopes from the outside to the inside. The top pressure slope slides in conjunction with the pressure slope provided at the lower end of the curved swing rod.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] A damping buffer structure is installed between the hook structure and the lifting structure to absorb the impact and low-frequency small-amplitude swaying generated by the steel truss girder during lifting or slight movement, preventing damage to the lifting device and steel truss girder from impact and swaying. It also reduces the swaying amplitude of the steel truss girder, improving the stability of the lifting process. Multiple damping boxes filled with damping oil are installed on opposite sides of the lifting structure. When the steel truss girder swings, the damping oil in the damping boxes provides resistance. The viscosity of the oil hinders the movement of the lifting structure, dissipating the energy of the swing and reducing the swaying amplitude of the steel truss girder. Two cable suppression structures are connected opposite each other on the other two sides of the lifting structure. These structures suppress the transmission of cable fluctuations and limit the lateral degree of freedom of the lifting body, increasing the overall stiffness of the system. This effectively improves the stability and safety of the lifting device, reduces the swaying of the steel truss girder during lifting, and better meets the needs of steel truss girder lifting operations.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 A schematic diagram of a lifting device for preventing steel truss swaying, provided for an embodiment of this utility model. Figure 1 ;

[0020] Figure 2 A schematic diagram of a lifting device for preventing steel truss swaying, provided for an embodiment of this utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the steel cable structure provided in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the lifting structure provided in an embodiment of the present utility model;

[0023] Figure 5 A schematic diagram of the hook structure provided in an embodiment of this utility model;

[0024] Figure 6 A schematic diagram of the steel cable suppression structure provided in this embodiment of the utility model;

[0025] Figure 7 A schematic diagram of the auxiliary damping structure provided in an embodiment of this utility model.

[0026] Icons: Cable structure 1; Lifting steel belt 110; Cable body 120; Lifting seat 130; Lifting structure 2; Lifting body 210; Lifting roller 220; Hook structure 3; Top plate attachment 310; Column attachment 320; Hook body 330; Auxiliary crossbeam 340; Top pressure block 350; Top pressure ramp 360; Damping buffer structure 4; Damping box 5; Cable suppression structure 6; Bending swing arm 610; Contact seat 620; Tension spring 630; Rubber damping pad 640; Auxiliary damping structure 7; Guide shaft 710; Retaining ring 720; Stop block 730; Damping spring 740. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0029] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] The following is in conjunction with the appendix Figures 1-7 The present invention will be described in further detail below.

[0031] Example 1:

[0032] like Figures 1-7 As shown, a lifting device for preventing the swaying of a steel truss includes: a lifting structure 2 connected to a crawler crane cable structure 1; a hook structure 3 movably connected to the lifting structure 2 for lifting the steel truss; a damping buffer structure 4 between the hook structure 3 and the lifting structure 2; multiple damping boxes 5 containing damping oil arranged opposite each other on both sides of the lifting structure 2, the amount of damping oil in the damping box 5 not exceeding three-quarters of the volume of the damping box 5; and two cable suppression structures 6 connected opposite each other on the other two sides of the lifting structure 2, the two cable suppression structures 6 abutting against each other on both sides of the cable structure 1.

[0033] The working principle and technical effects of the above scheme are as follows:

[0034] In this utility model, a lifting device for preventing steel truss swaying includes a lifting structure 2 connected to a crawler crane's cable structure 1. When the crawler crane starts, power is transmitted to the lifting structure 2 via the cable structure 1. A hook structure 3, movably connected to the lifting structure 2, is used to lift the steel truss, thereby lifting it for transport and other operations. At the moment of lifting, the steel truss is suddenly lifted from a stationary state, generating a significant impact force. During the lifting process, due to external environmental factors (such as wind, uneven ground causing swaying, etc.) or minor operational instability, the steel truss may experience low-frequency, small-amplitude swaying. The damping buffer structure 4 between the hook structure 3 and the lifting structure 2 will function under these conditions. The damping buffer structure 4 can absorb and convert the energy of these impacts and swaying, thereby reducing the impact and swaying on the lifting device and the steel truss itself. Multiple damping boxes 5, filled with damping oil, are arranged opposite each other on both sides of the lifting structure 2. When the steel truss sways, the lifting structure 2 will also generate a certain amount of damping fluid. The damping oil in the damping box 5, due to its viscosity, hinders the movement of the lifting structure 2. The oil flows within the damping box 5, consuming the energy of the oscillation and reducing the swing amplitude of the steel truss. The amount of damping oil is limited to no more than three-quarters of the volume of the damping box 5, ensuring sufficient space for the oil to flow during oscillation and better exert its damping effect. During lifting, the steel cable structure 1 itself generates fluctuations, which are transmitted to the lifting structure 2 and the steel truss, exacerbating the swaying of the steel truss. Two steel cable suppression structures 6, connected to opposite sides of the lifting structure 2, engage with the sides of the steel cable structure 1. When the steel cable structure 1 fluctuates, the steel cable suppression structures 6 absorb and suppress these fluctuations. Simultaneously, the two steel cable suppression structures 6 clamp the steel cable structure 1, restricting the lateral freedom of the lifting structure 2 relative to the steel cable structure 1, making the lifting structure 2 and the steel truss more stable in the lateral direction and reducing the possibility of large-amplitude pendulum-like swaying. This invention reduces wear and fatigue between components of the lifting device by using a damping buffer structure 4 to absorb impact and sway energy, a damping box 5 to reduce the swing amplitude, and a steel cable suppression structure 6 to suppress steel cable fluctuations. This extends the service life of the lifting device and reduces maintenance costs.

[0035] Example 2:

[0036] like Figures 1-7As shown, the lifting structure 2 includes: a lifting body 210, with two parallel lifting rollers 220 rotatably connected above the lifting body 210; the cable structure 1 includes: a lifting steel belt 110 wound around the bottom of the two lifting rollers 220, and a cable body 120 connected to the crawler crane, with both ends of the lifting steel belt 110 fixed to the lifting seat 130 at the bottom of the cable body 120. The hook structure 3 includes: a hook top plate 310 longitudinally slidable in the middle slide of the lifting body 210, the bottom of the hook top plate 310 connected to a hook post 320 slidable in the longitudinal through hole at the bottom of the lifting body 210, and the bottom of the hook post 320 connected to a hook body 330 for lifting the steel truss beam; the damping buffer structure 4 includes: an elastic damping element, which is disposed between the bottom surface of the hook top plate 310 and the middle slide of the lifting body 210. The elastic damping component includes a damping spring sleeved on the hanging post 320, with both ends of the damping spring abutting against the hanging top plate 310 and the bottom surface of the middle slide rail, respectively.

[0037] The working principle and technical effects of the above scheme are as follows:

[0038] In this utility model of a lifting device for preventing steel truss swaying, after the crawler crane starts, the power is transmitted to the lifting base 130 through the steel cable body 120. Since both ends of the lifting steel belt 110 are fixed to the bottom of the lifting base 130, and the lifting steel belt 110 is wrapped around the bottom of two parallel lifting rollers 220, when the steel cable body 120 is pulled, the lifting steel belt 110 will drive the lifting rollers 220 to rotate. The lifting rollers 220 are rotatably connected above the lifting body 210, thereby transmitting force to the lifting body 210, realizing the overall lifting action of the lifting device. The force transmission is very smooth, and the rotation of the lifting rollers 220 can reduce the friction between the lifting steel belt 110 and the lifting body 210, reducing energy loss; the hook structure 3 is used to lift the steel truss. When the hoisting device is raised or lowered, the hook body 330 slides longitudinally along the slide and through the hole of the hoisting body 210 through the hook post 320 and the hook top plate 310 to adapt to the hoisting and placement process of the steel truss. At the moment of hoisting, the steel truss is suddenly lifted from a static state, which will generate a large impact force. At this time, the hook top plate 310 will move up or down along the middle slide of the hoisting body 210 under the action of impact force or sway. The two ends of the damping spring are preferably fixedly connected to the bottom surface of the hook top plate 310 and the middle slide. When the hook top plate 310 moves, it will compress or stretch the damping spring. The damping spring absorbs and converts the energy of impact and sway, such as converting it into elastic potential energy, and then slowly releases it, thereby reducing the impact of impact and sway on the hoisting device and the steel truss itself.

[0039] Example 3:

[0040] like Figures 1-7As shown, the top plate 310 has a through horizontal hole, and an auxiliary horizontal beam 340 is connected inside the through horizontal hole. The auxiliary horizontal beam 340 is slidably fitted in the longitudinal limiting grooves on both sides of the hoisting body 210, thereby improving the stability of the movement of the hook structure 3. The hoisting device for preventing the steel truss beam from swaying also includes: two auxiliary damping structures 7 connected to both ends of the auxiliary horizontal beam 340; the auxiliary horizontal beam 340 is slidably installed in the through horizontal hole; the auxiliary damping structure 7 includes: a guide shaft 710 with its top inserted into the longitudinal hole of the auxiliary horizontal beam 340, a retaining ring 720 slidably connected to the guide shaft 710 abutting against the lower surface of the auxiliary horizontal beam 340, and a stop block 730 fixed to the bottom of the guide shaft 710 detachably connected to the side of the hoisting body 210 by bolts; the retaining ring 720 and the stop block 730 are connected by a damping spring 740 sleeved on the guide shaft 710.

[0041] The working principle and technical effects of the above scheme are as follows:

[0042] In this invention, a lifting device for preventing steel truss swaying includes a through transverse hole on the top plate 310, through which an auxiliary crossbeam 340 is slidably fitted into longitudinal limiting grooves on both sides of the lifting body 210. When the hook structure 3 moves up and down during the lifting process, the top plate 310 drives the auxiliary crossbeam 340 to slide within the longitudinal limiting groove. The longitudinal limiting groove acts as a lateral limit for the auxiliary crossbeam 340, preventing lateral displacement or swaying of the hook structure 3 during movement. This ensures that the hook structure 3 can only move stably along the longitudinal direction, thereby improving the stability of the hook structure 3's movement. The auxiliary damping structure 7 is connected to both ends of the auxiliary crossbeam 340. When the hook structure 3 is impacted or shakes during the lifting of the steel truss, the auxiliary crossbeam 340 will displace accordingly. When the auxiliary crossbeam 340 displaces, it will push the retaining ring 720 to slide on the guide shaft 710, thereby compressing or stretching the damping spring 740. The damping spring 740 will convert the energy of the impact and shaking into elastic potential energy for storage, and then slowly release it, playing a role in buffering and shock absorption, further reducing the shaking of the hook structure 3 and improving the stability of the lifting process; since the stop block 730 is detachably connected to the lifting device by bolts... The auxiliary damping structure 7 is located on the side of the main body 210, so the decision to install it can be made based on the actual lifting conditions. When the lifting environment is relatively stable and the steel truss is relatively light, and no auxiliary buffering is needed, the auxiliary damping structure 7 can be removed. When the lifting environment is complex, the steel truss is heavy, or the requirements for lifting stability are high, the auxiliary damping structure 7 is installed for auxiliary buffering to meet the usage needs of different situations. The setting of the auxiliary damping structure 7 further enhances the buffering and shock absorption capacity of the lifting device, reduces damage to the steel truss and the lifting device, extends the service life of the device, and also improves the stability of lifting the steel truss.

[0043] Example 4:

[0044] like Figures 1-7 As shown, the cable restraint structure 6 includes: a curved swing arm 610 rotatably connected to the side of the hoisting body 210 at its center; an abutment seat 620 rotatably connected to the upper end of the curved swing arm 610 for abutting against the cable body 120; and multiple tension springs 630 fixedly connected between the lower end of the curved swing arm 610 and the side of the hoisting body 210. A V-shaped groove is provided on the contact surface between the abutment seat 620 and the cable body 120. A rubber damping pad 640 is glued into the V-shaped groove.

[0045] The working principle and technical effects of the above scheme are as follows:

[0046] In the lifting device for preventing steel truss swaying of the present invention, in the steel cable suppression structure 6, the middle part of the bending swing rod 610 is rotatably connected to the side of the lifting body 210, and multiple tension springs 630 are fixed between its lower end and the side of the lifting body 210. The tension springs 630 are normally in a compressed state and generate elastic force. Under the action of elastic force, the bending swing rod 610 will rotate around the rotation point in its middle part, so that the abutment seat 620 at the upper end of the bending swing rod 610 always maintains a tendency to approach and press against the steel cable body 120, thereby making the abutment seat 620 in close contact with the steel cable body 120. A V-shaped clamping groove is provided on the contact surface between the abutment seat 620 and the steel cable body 120. The shape of the V-shaped clamping groove can better fit the outer surface of the steel cable body 120 and increase the contact area between the abutment seat 620 and the steel cable body 120. Meanwhile, a rubber damping pad 640 is glued into the V-shaped groove. Rubber has good elasticity and damping characteristics. When the steel cable body 120 fluctuates, the rubber damping pad 640 will undergo elastic deformation, converting the fluctuation energy of the steel cable body 120 into heat energy inside the rubber and dissipating it. Moreover, the rubber damping pad 640 increases the friction between the contact seat 620 and the steel cable body 120, further restricting the relative sliding and swaying of the steel cable body 120, preventing the fluctuation of the steel cable body 120 from being transmitted to the lifting structure 2 and the steel truss connected to it, reducing the swaying of the steel truss caused by the fluctuation of the steel cable, reducing the risk of the steel truss colliding with surrounding objects during the lifting process, and ensuring the safe conduct of the lifting operation.

[0047] Example 5:

[0048] like Figures 1-7 As shown, two mounting slots are provided at opposite ends of the top plate 310, and two top pressing blocks 350 are inserted into the two mounting slots. The locking rod screwed onto the top plate 310 is inserted into the locking hole of the top pressing block 350. The outer side of the top pressing block 350 is provided with a top pressing slope 360 ​​that slopes from the outside to the inside. The top pressing slope 360 ​​slides in conjunction with the pressure slope provided at the lower end of the curved swing rod 610.

[0049] The working principle and technical effects of the above scheme are as follows:

[0050] In the lifting device for preventing steel truss swaying of the present invention, when the top plate 310 moves downward, it can drive the two top pressure blocks 350 on both sides to move downward. The top pressure inclined surfaces 360 of the two top pressure blocks 350 slide downward on the pressure inclined surfaces of the lower ends of the two curved swing rods 610 of the two steel cable suppression structures 6, thereby pressing the lower ends of the two curved swing rods 610 away from each other, thereby strengthening the clamping control of the upper ends of the two curved swing rods 610 against the steel cable body 120.

[0051] During the lifting process, when the top plate 310 moves downward (e.g., due to gravity or displacement caused by the lifting operation when lifting heavy objects), it drives the top pressure block 350 downward. The top pressure inclined surface 360 ​​of the top pressure block 350 slides and engages with the pressure inclined surface at the lower end of the curved swing rod 610, causing the lower ends of the two curved swing rods 610 to move away from each other. According to the lever principle, the curved swing rod 610 uses its central rotation point as a fulcrum. When the lower end moves away, the upper end will more tightly press against the steel cable body 120. The dynamic adjustment of the clamping force can automatically enhance the restraining effect on the steel cable body 120 according to the actual lifting situation (such as increased force on the steel cable, increased swaying, etc., which often cause the top plate 310 to displace downward), effectively reducing the swaying and fluctuation of the steel cable. When lifting steel trusses of different weights, the tension and fluctuation of the steel cable are different. This design automatically adjusts the clamping force of the bending swing arm 610 on the steel cable by adjusting the displacement of the top plate 310 as the load changes, better adapting to various lifting conditions and improving the stability and reliability of the lifting device under different loads. The top plate 310, the pressure block 350, and the bending swing arm 610 of the steel cable suppression structure 6 are cleverly combined to form a collaborative system. The movement of the top plate 310 is converted into a force on the bending swing arm 610 through the pressure block 350, achieving linkage between different components and enabling the various parts of the lifting device to cooperate and jointly complete the task of stable lifting. When the top plate 310 moves downward to enhance the clamping control on the steel cable, the stability of the steel cable helps maintain the stability of the top plate 310 and the entire hook structure during lifting, further improving the overall stability and reliability of the lifting device.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A lifting device for preventing steel truss beams from swaying, characterized in that, include: The lifting structure is connected to the cable structure of the crawler crane. The lifting structure is movably connected to the hook structure for lifting the steel truss beam. A damping buffer structure is provided between the hook structure and the lifting structure. Multiple damping boxes containing damping oil are set on both sides of the lifting structure. Two cable restraint structures are connected to the other two sides of the lifting structure. The two cable restraint structures are in abutting fit on both sides of the cable structure.

2. The lifting device for preventing steel truss swaying according to claim 1, characterized in that, The lifting structure includes: a lifting body, with two lifting rollers arranged side by side rotatably connected above the lifting body; the cable structure includes: a lifting steel belt wound around the bottom of the two lifting rollers, and a cable body connected to the crawler crane, with both ends of the lifting steel belt fixed to the lifting seat at the bottom of the cable body.

3. The lifting device for preventing steel truss swaying according to claim 2, characterized in that, The hook structure includes: a hook top plate that slides longitudinally in the middle slide rail of the hoisting body, the bottom of the hook top plate being connected to a hook column that slides in the longitudinal through hole at the bottom of the hoisting body, and the bottom of the hook column being connected to the hook body for hoisting the steel truss beam; the damping buffer structure includes: an elastic damping element that is disposed between the hook top plate and the bottom surface of the middle slide rail of the hoisting body.

4. The lifting device for preventing steel truss swaying according to claim 3, characterized in that, The elastic damping component includes: a damping spring sleeved on the hanging column, with its two ends abutting against the hanging top plate and the bottom surface of the middle slide, respectively.

5. A lifting device for preventing steel truss swaying according to claim 3, characterized in that, The top plate of the hoisting device is provided with a through horizontal hole, and an auxiliary horizontal beam is connected inside the through horizontal hole. The auxiliary horizontal beam is slidably fitted in the longitudinal limiting grooves on both sides of the hoisting body.

6. A lifting device for preventing steel truss swaying according to claim 5, characterized in that, Also includes: Two auxiliary damping structures are connected to both ends of the auxiliary crossbeam; The auxiliary crossbeam is slidably installed inside the through-hole; The auxiliary damping structure includes: a guide shaft with its top inserted through the longitudinal hole of the auxiliary crossbeam; a retaining ring slidably connected to the guide shaft abutting against the lower surface of the auxiliary crossbeam; and a stop block fixed to the bottom of the guide shaft, which is detachably connected to the side of the hoisting body by bolts; the retaining ring and the stop block are connected by a damping spring sleeved on the guide shaft.

7. A lifting device for preventing steel truss swaying according to claim 3, characterized in that, The cable restraint structure includes: a curved swing arm rotatably connected to the side of the hoisting body in the middle, an upper end of the curved swing arm rotatably connected to an abutment seat for abutting against the cable body, and multiple tension springs fixed between the lower end of the curved swing arm and the side of the hoisting body.

8. A lifting device for preventing steel truss swaying according to claim 7, characterized in that, A V-shaped groove is provided on the contact surface between the abutment and the steel cable body.

9. A lifting device for preventing steel truss swaying according to claim 8, characterized in that, A rubber damping pad is glued inside the V-shaped groove.

10. A lifting device for preventing steel truss swaying according to claim 9, characterized in that, Two mounting slots are provided at opposite ends of the top plate, and two top pressure blocks are inserted into the two mounting slots. The locking rod screwed to the top plate is inserted into the locking hole of the top pressure block. The outer side of the top pressure block is provided with a top pressure slope that slopes from the outside to the inside. The top pressure slope slides in conjunction with the pressure slope provided at the lower end of the curved swing rod.

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