Anti-swing structure of a bridge portal crane sling

Abstract

The utility model discloses a bridge -portal crane sling anti -sway structure belongs to heavy machinery hoisting equipment technical field. The utility model adopts technical scheme for a bridge -portal crane sling anti -sway structure, including crossbeam, the crossbeam lower extreme is equipped with the clamping mechanism for clamping work piece, still include anti -swing subassembly, the anti -swing subassembly includes the upper limit position subassembly of setting in the crossbeam upper end and the lower limit position subassembly of being fixed on the ground, still include vertical lift mechanism, the vertical lift mechanism with upper limit position subassembly between through steel wire -pulley set connection to control upper limit position subassembly in vertical direction remove, the utility model discloses through rotating drive subassembly realizes work piece upset, and the positioning detection subassembly and visual detection mechanism are combined to ensure clamping accuracy, utilize anti -swing subassembly and control mechanism and promote hoist stability, solved the traditional sling upset difficult, and the problem of inaccurate positioning and easy swing, has efficient, accurate, safe and the advantage of high degree of automation.

Description

Technical Field

[0001] This utility model belongs to the technical field of heavy machinery hoisting equipment, specifically relating to an anti-sway structure for a bridge crane lifting device. Background Technology

[0002] In industries such as heavy machinery manufacturing, metallurgy, papermaking, and shipbuilding, the handling, hoisting, and attitude adjustment of large roller workpieces are crucial links in the production process. These workpieces are typically characterized by their large weight, massive size, long axial dimensions, and high requirements for external cylindrical precision. Their hoisting operations not only need to meet high-strength load-bearing requirements but also need to consider positioning accuracy, attitude controllability, and operational safety. Currently, hoisting equipment for large roller workpieces mostly relies on traditional crane lifting devices, which suffer from the following main technical drawbacks: First, the tilting function is lacking or the operation is cumbersome. Traditional lifting devices often employ rigid hoisting structures, only enabling translation and lifting of the workpiece. If the circumferential attitude of the roller workpiece needs to be adjusted, auxiliary lifting equipment is often required, or adjustments are made manually using hooks. This is not only inefficient but also prone to workpiece deformation due to uneven force during multiple hoisting and switching processes, potentially even leading to safety accidents. Secondly, the positioning accuracy is insufficient and the clamping reliability is poor. The outer wall of large roller workpieces is usually a smooth curved surface, making it difficult for the clamping end of traditional lifting devices to accurately align with the workpiece axis or the preset clamping area. This is especially true when the workpiece has slight ellipticity or surface defects, which can easily lead to clamping offset and slippage. Existing equipment lacks a real-time detection and dynamic adjustment mechanism, making it difficult to ensure the concentricity and alignment of the clamping mechanisms on both sides. This may cause the workpiece to experience force imbalance during lifting, affecting processing accuracy or causing workpiece damage. Thirdly, swaying is prone to occur during lifting, posing a safety concern. Affected by factors such as the crane's inertia, ground airflow, or workpiece center of gravity shift, the lifting device and workpiece are prone to horizontal swaying during lifting and movement. This not only reduces positioning accuracy but may also cause collisions with surrounding equipment. Existing anti-sway measures mostly rely on mechanical damping structures, which have slow response speed and poor adaptability, making it difficult to meet the needs of high-precision operation scenarios. Fourth, the level of automation is low, relying heavily on manual intervention. The operation of traditional lifting tools depends heavily on manual observation and experience, such as visually confirming the clamping position and manually adjusting the lifting tool spacing. This not only increases the labor intensity of operators but also limits operational efficiency and safety due to human error. In modern intelligent manufacturing scenarios, this manual operation mode is no longer suitable for the collaborative needs of automated production lines. Therefore, developing a special lifting tool for large roller workpieces with automatic flipping function, high-precision positioning, anti-sway control, and intelligent detection is key to solving the above problems. This type of lifting tool needs to integrate technologies such as mechanical structure optimization, sensor detection, and automatic control to achieve full-process automation from workpiece identification, precise clamping, posture adjustment to stable transfer, in order to meet the modern industrial demand for efficient, precise, and safe lifting operations of large roller workpieces. Existing technologies urgently need improvement to address these issues. Utility Model Content

[0003] This utility model provides an anti-sway structure for a bridge crane lifting device to solve at least one of the above-mentioned technical problems.

[0004] The technical solution adopted in this utility model is as follows:

[0005] An anti-sway structure for a bridge crane lifting device includes a crossbeam with a clamping mechanism for holding workpieces at the lower end of the crossbeam. It also includes an anti-sway component, which includes an upper limit component disposed at the upper end of the crossbeam and a lower limit component fixed to the ground. The anti-sway component also includes a vertical lifting mechanism, which is connected to the upper limit component via a wire-pulley block to control the movement of the upper limit component in the vertical direction.

[0006] Furthermore, this application also proposes that the upper limit assembly includes a fixed frame, the top of the crossbeam is fixedly connected to the fixed frame, the vertical lifting mechanism includes a support frame, the support frame is provided with a dual-axis motor, and the output end of the dual-axis motor is connected to the fixed frame through a wire-pulley assembly.

[0007] Furthermore, this application also proposes that the support frame is provided with limiting grooves at the four corners of its bottom, and the upper end of the fixed frame is fixedly connected with a second limiting rod that matches the limiting groove.

[0008] Furthermore, this application also proposes that the lower limit assembly includes a base, the base being symmetrically provided with two sets about the roller workpiece, the base being provided with a horizontal guide rail, a sliding seat being slidably connected to the horizontal guide rail, a limit sleeve being provided on the sliding seat, and a first limit rod cooperating with the limit sleeve being fixedly connected to the bottom of the clamping mechanism.

[0009] Furthermore, this application also proposes that the clamping mechanism includes two sets of sliding components arranged opposite each other on the crossbeam. The outer end of the sliding component is fixedly connected to a side support mechanism. The side support mechanism is provided with a rotary drive component. The rotation output end of the rotary drive component is fixedly connected to a clamping component. The four corners and the center of the two sets of clamping components are provided with corresponding positioning detection components. The clamping component is provided with a vision detection mechanism inside. It also includes a control mechanism. The control mechanism controls the rotary drive component according to the positioning detection component to adjust the two sets of clamping components to be aligned. The control mechanism adjusts the clamping end position of the clamping component to be directly opposite the side wall of the roller workpiece through the vision detection mechanism.

[0010] Furthermore, this application also proposes that the sliding assembly includes slide rails disposed opposite to both ends of the crossbeam, a horizontal support beam slidably connected within the slide rails, and a motor-screw drive for driving the horizontal support beam to slide within each slide rail.

[0011] Furthermore, this application also proposes that the side support mechanism includes a side housing, the side housing is fixed to the outer end of the horizontal support beam, and the drive assembly includes a drive motor and a reducer disposed in the side housing, the output end of the drive motor is connected to the power input end of the reducer, and the power output end of the reducer is fixedly connected to the clamp assembly.

[0012] Furthermore, this application also proposes that the clamping assembly includes an arc-shaped clamping plate, with a plurality of arc-shaped tightening plates fixedly connected at intervals on the clamping end face of the arc-shaped clamping plate, and a plurality of stiffening plates fixedly connected between each arc-shaped tightening plate and the arc-shaped clamping plate, and also includes a plurality of reinforcing plates, which are welded horizontally and vertically to the outer side of the arc-shaped clamping plate and then welded to the outer side of the arc-shaped clamping plate, with a fixed seat welded to the fixed seat, and a rotating shaft fixedly connected to the fixed seat, the rotating shaft being fixedly connected to the power output end of the reducer, and a sliding plate welded to both ends of the arc-shaped clamping plate.

[0013] Furthermore, this application also proposes that the positioning detection component includes laser emitters fixedly installed at the four corners and center of any arc-shaped clamp, and a target frame for sensing laser beams is fixedly connected at the four corners and center of another arc-shaped clamp. The control mechanism controls the drive motor to rotate and adjust the arc-shaped clamp according to the position of the laser beam within the target frame. When the laser beams emitted by all the laser emitters are all projected onto the center position of the corresponding target frame, the positions of the two sets of arc-shaped clamps are completely corresponding.

[0014] Furthermore, this application also proposes that a pressure sensor is provided inside the clamp assembly, and the control mechanism controls the sliding assembly to adjust the output pressure of the clamp assembly based on the detection value of the pressure sensor.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0016] 1. This solution employs multi-sensor fusion detection technology to achieve sub-millimeter-level clamping and positioning accuracy. Traditional anti-sway devices use mechanical limit structures; this solution actively suppresses swaying through a closed-loop control system, improving dynamic stability. Existing operation processes require multiple operators; this solution achieves fully automated control from identification and clamping to flipping. This application achieves automatic centering and attitude calibration during the clamping process of large roller workpieces, eliminating manual adjustment errors. Synchronous control of the rotary drive component ensures smooth and reliable flipping action, preventing workpiece deformation due to uneven force. A multi-dimensional detection system forms a redundant verification mechanism, ensuring real-time controllability of the clamping state. The automated control process reduces the labor intensity of operators and adapts to the continuous operation requirements of intelligent manufacturing production lines.

[0017] 2. This solution actively adjusts the height of the upper limit component through a vertical lifting mechanism, and combines this with the locking mechanism of the lower limit component to achieve real-time control of the spreader's sway amplitude. It can adapt to anti-sway requirements under different working conditions without relying on passive damping. This application can quickly suppress the lateral sway of the spreader and workpiece during lifting, avoiding positioning deviations caused by inertia or airflow disturbances, and improving the stability of the lifting operation. The synergistic effect of the lower limit component on the ground and the upper lifting mechanism further enhances the rigid constraint of the spreader in the vertical direction, reducing the risk of collision between the workpiece and surrounding equipment.

[0018] 3. This solution employs a motor-screw drive to directly drive the horizontal support beams, eliminating drift errors caused by hydraulic system oil temperature variations and avoiding the cumulative backlash errors of chain drives. Simultaneously, the closed-loop control characteristics of the servo motor provide real-time displacement feedback, improving the alignment accuracy of the clamping components to the millimeter level and resolving the inefficiency of repeated manual calibration. This application achieves precise control of the clamping component spacing. When clamping workpieces of different diameters, the positions of the horizontal support beams on both sides can be quickly adjusted through programmed control to ensure that the clamping center coincides with the workpiece axis. Furthermore, the motor-screw drive method avoids the slippage or jamming issues common in traditional transmission mechanisms, significantly improving the reliability and repeatability of lifting operations.

[0019] 4. This solution integrates the drive motor and reducer within a sealed side housing, using a rigid coupling to directly transmit power. This eliminates the impact of transmission backlash on positioning accuracy and enhances impact resistance through the housing structure. This application achieves a compact layout and stable transmission of the drive assembly, solving the reliability degradation problem caused by exposed transmission mechanisms in traditional lifting fixtures. The enclosed structure of the side housing effectively isolates external environmental interference, and the direct connection between the reducer and drive motor avoids positioning deviations caused by loose transmission chains, thus ensuring precise angle control of the fixture assembly when flipping heavy workpieces.

[0020] 5. This solution significantly improves clamping stability through the fitting design of the arc-shaped clamping plate with the curved surface of the workpiece, combined with the three-dimensional support network formed by the cross-reinforcing plates. The direct connection structure between the rotating shaft and the reducer simplifies the flipping drive path and reduces transmission loss. The slide plate forms a multi-point support system, effectively dispersing the bending moment generated by the workpiece's own weight. This application achieves efficient clamping and reliable flipping of large roller workpieces. The combined design of the arc-shaped top clamping plate and the stiffening plate enhances the deformation resistance of the clamping surface. The cross-reinforcing plates effectively suppress the twisting of the clamping plate under heavy load. The synergistic effect of the rotating shaft and the slide plate ensures balanced force on the workpiece during the flipping process, adapting to the clamping requirements of workpieces of different diameters and reducing the risk of damage to the workpiece surface caused by excessive local pressure.

[0021] 6. This solution achieves millimeter-level positioning accuracy through multi-beam cross-detection and closed-loop control, while also possessing adaptability to meet the precise clamping requirements of workpieces of different sizes. This application effectively solves the problem of uneven force distribution caused by clamp misalignment during the hoisting of large roller workpieces, avoiding damage to the workpiece surface caused by localized stress concentration. The automated detection and adjustment mechanism significantly shortens the clamp alignment time, improving hoisting efficiency by approximately 40%, while eliminating the safety hazards of manual operation. The multi-position laser detection network covers the key stress areas of the clamp, ensuring comprehensive calibration of the clamping posture and providing accurate reference conditions for subsequent flipping operations.

[0022] 7. This solution achieves real-time monitoring and automatic compensation of clamping force through the linkage control of pressure sensors and sliding components, solving the clamping reliability problem caused by human judgment errors. This application can dynamically maintain the stability of the clamping force during hoisting, preventing sudden changes in local pressure caused by uneven workpiece surfaces or center of gravity shifts, ensuring uniform force contact between the clamping mechanism and the workpiece. Simultaneously, the closed-loop control mechanism rapidly responds to pressure changes, avoiding workpiece slippage or structural damage caused by clamping force fluctuations, significantly improving the safety and automation level of hoisting operations.

[0023] 8. This application achieves uniform force distribution on both sides during the vertical lifting of the lifting device, effectively suppressing horizontal swaying caused by unilateral traction force deviation. The synergistic effect of the dual-axis motor and the wire-pulley block can quickly respond to control commands, and offset inertial swaying through symmetrical tension during the lifting start and stop phases, so that the roller workpiece maintains a stable posture during height adjustment, avoiding the problem of sway amplitude accumulation caused by the lag response of traditional mechanical damping structures.

[0024] 9. This solution forms a rigid constraint network through the distributed cooperation of four sets of limiting slots and insertion rods, effectively suppressing multi-directional offsets. Especially when hoisting ultra-long roller workpieces, it avoids frame distortion caused by center of gravity shift. This application solves the problem of relative displacement between the support frame and the fixed frame during hoisting due to uneven force or inertia, ensuring that the vertical lifting mechanism always operates stably along the predetermined trajectory, reducing the risk of wire rope eccentricity caused by frame misalignment, and simultaneously reducing the probability of collisions between the lifting device and surrounding equipment.

[0025] 10. This solution, by setting a movable base and limiting sleeve, automatically completes the insertion and locking with the ground limiting mechanism during the descent of the lifting device. This retains the horizontal position adjustment capability of the lifting device while achieving real-time anti-sway control through mechanical limiting, significantly improving system response speed and positioning stability. This application can pre-establish a rigid connection point with the side box of the lifting device on the ground, effectively eliminating horizontal swaying caused by inertia or airflow during lifting. The sleeve structure between the limiting sleeve and the first limiting rod can quickly form a vertical constraint, avoiding the need for repeated manual adjustments to the limiting device. The sliding design of the horizontal guide rail allows the device to adapt to roller workpieces of different sizes, maintaining the versatility of the lifting device while ensuring anti-sway effect. This structure also features low maintenance costs and strong impact resistance, making it suitable for industrial scenarios such as metallurgy and shipbuilding where heavy-load, high-frequency lifting is required. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0027] Figure 2 This is a side view of a specific embodiment of the present invention;

[0028] Figure 3 This is one of the structural schematic diagrams of the clamp assembly in a specific embodiment of the present invention;

[0029] Figure 4 This is a second structural schematic diagram of the clamp assembly in a specific embodiment of the present invention;

[0030] Figure 5 This is the third structural schematic diagram of the clamp assembly in a specific embodiment of the present invention.

[0031] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0032] In the attached diagram:

[0033] 1. Crossbeam; 11. Slide rail; 12. Motor-screw drive; 2. Horizontal support beam; 21. Side box; 211. Drive motor; 212. Reducer; 23. First limit rod; 3. Fixture assembly; 31. Arc-shaped clamping plate; 311. Fixed seat; 312. Rotating shaft; 32. Arc-shaped top clamping plate; 33. Stiffening plate; 34. Slide plate; 35. Reinforcing plate; 36. Laser emitter; 37. Pressure sensor; 4. Fixed frame; 41. Steel wire-pulley block; 42. Second limit rod; 5. Base; 51. Horizontal guide rail; 52. Sliding seat; 53. Limit sleeve; 6. Support frame; 61. Dual-axis motor. Detailed Implementation

[0034] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Reference Figures 1 to 5A bridge crane anti-sway structure for a lifting device includes a crossbeam 1 with two sets of sliding components facing each other on the crossbeam 1. A side support mechanism is fixedly connected to the outer end of each sliding component. A rotary drive component is provided inside the side support mechanism. A clamping component 3 is fixedly connected to the rotation output end of the rotary drive component. Each of the four corners and the center of the two clamping components 3 is provided with a corresponding positioning detection component. A vision detection mechanism is provided inside the clamping component 3. The system also includes a control mechanism. The control mechanism controls the rotary drive component according to the positioning detection components to adjust the two sets of clamping components 3 to be aligned. The control mechanism adjusts the position of the clamping end of the clamping component 3 to be directly opposite the side wall of the roller workpiece through the vision detection mechanism.

[0040] The crossbeam 1, serving as the main load-bearing component, can be manufactured using a box-type steel structure with internal reinforcing ribs to enhance bending stiffness, supporting the sliding assembly and clamping load. The sliding assembly includes a slide rail 11 and a drive mechanism, such as a linear guide rail coupled with a servo motor, enabling precise adjustment of the clamp spacing to accommodate different workpiece sizes. The side support mechanism is a box-type welded structure with internal transmission components, such as a planetary gear reducer combined with a torque motor, providing stable driving force for clamp rotation. The output end of the rotary drive assembly is connected to the clamp via a flange, with locating pins on the flange end face to ensure coaxial installation. The clamp assembly 3 employs an arc-shaped clamping plate 31 structure, such as a segmented hydraulic gripper, with wear-resistant pads lining the inner wall to protect the workpiece surface. The positioning and detection assembly includes a photoelectric sensor array, such as laser rangefinders positioned at the four corners and an angle encoder at the center, to monitor the relative position deviation of the clamp in real time. The vision inspection mechanism uses an industrial camera combined with image processing algorithms, such as edge detection algorithms, to identify the workpiece contour and calculate the clamping center offset. The control mechanism integrates a PLC and a motion controller, for example, dynamically adjusting the speed and direction of the drive motor 211 based on a PID algorithm.

[0041] Specifically, as the lifting device approaches the workpiece, the sliding assembly drives the two clamps on both sides to move towards the workpiece axis. The vision inspection mechanism scans the workpiece end face contour, and the control mechanism calculates the optimal clamping point position and adjusts the clamp opening angle. During clamping, the positioning detection components at the four corners and center continuously monitor the clamp alignment status. When a positional deviation is detected, the control mechanism activates the rotary drive assembly to fine-tune the clamp angle. After the two sets of clamps are fully aligned, the hydraulic system applies a preset clamping force. During the flipping operation, the two rotary drive assemblies rotate synchronously in opposite directions, causing the workpiece to rotate around its axis. The vision inspection mechanism tracks the workpiece posture in real time, and the control mechanism dynamically corrects the rotation angle.

[0042] Compared to existing technologies, traditional lifting devices with fixed grippers cannot rotate circumferentially. This solution achieves workpiece rotation at any angle through an independently controllable rotary drive component. Existing equipment relies on manual visual alignment; this solution employs multi-sensor fusion detection technology to achieve sub-millimeter-level clamping and positioning accuracy. Traditional anti-sway devices use mechanical limit structures; this solution actively suppresses sway through a closed-loop control system, improving dynamic stability. Existing operating procedures require multiple operators; this solution achieves fully automated control from identification and clamping to rotation.

[0043] Through the above technical solutions, this application achieves automatic centering and posture calibration during the clamping process of large roller workpieces, eliminating errors from manual adjustments. Synchronous control of the rotary drive component ensures smooth and reliable flipping motion, preventing workpiece deformation due to uneven force. A multi-dimensional detection system forms a redundant verification mechanism, ensuring real-time controllability of the clamping state. The automated control process reduces the labor intensity of operators and adapts to the continuous operation requirements of intelligent manufacturing production lines.

[0044] As a preferred embodiment of this application, refer to Figure 1 and Figure 2 It also includes an anti-sway component, which includes an upper limit component set on the upper end of the crossbeam 1 and a lower limit component fixed on the ground. It also includes a vertical lifting mechanism, which is connected to the upper limit component by a wire-pulley block 41 to control the upper limit component to move in the vertical direction.

[0045] The upper limit assembly refers to the limiting structure installed at the upper end of the crossbeam 1. Specifically, it can be implemented using a rigid support structure with a fixed frame 4, used to limit the lateral displacement of the lifting device during hoisting. The lower limit assembly refers to the positioning structure fixed to the ground. Specifically, it can be implemented using a base 5 structure with a horizontal guide rail 51 and a sliding seat 52, used to cooperate with the limiting rod at the bottom of the lifting device during hoisting to provide ground support. The vertical lifting mechanism refers to the power device that drives the upper limit assembly to move vertically. Specifically, it can be implemented using a dual-axis motor 61 in conjunction with a pulley system, controlling the height of the upper limit assembly by adjusting the length of the wire rope. The wire rope-pulley block 41 refers to the transmission mechanism connecting the vertical lifting mechanism and the upper limit assembly. Specifically, it can be implemented using a combination structure of multiple strands of wire rope with fixed and movable pulleys, used to convert the rotational motion of the motor into the linear lifting motion of the upper limit assembly.

[0046] During hoisting operations, the vertical lifting mechanism drives the upper limit assembly to move vertically via the wire-pulley block 41, thereby dynamically adjusting the position of the top of the lifting device. When the lifting device sways laterally due to inertia or external disturbances, the upper limit assembly, through the rigid fixing frame 4 and the limiting groove of the crane support frame 6, limits the lateral displacement. Simultaneously, the sliding seat 52 in the lower limit assembly can move along the horizontal guide rail 51, allowing the limiting sleeve 53 on the base 5 to quickly align and insert with the first limiting rod 23 at the bottom of the side box 21, forming a ground fixing point. Through the synergistic effect of the top lifting adjustment and the bottom insertion fixing, the swaying amplitude of the lifting device is effectively suppressed.

[0047] Compared to existing technologies, traditional anti-sway devices mostly employ mechanical damping structures, whose response speed is limited by the deformation recovery time of the damping material and cannot be dynamically adjusted according to the actual swing amplitude of the spreader. This solution actively adjusts the height of the upper limit component through a vertical lifting mechanism, combined with the plug-in locking of the lower limit component, to achieve real-time control of the spreader's swing amplitude. It can adapt to anti-sway requirements under different working conditions without relying on passive damping.

[0048] Through the above technical solution, this application can quickly suppress the lateral sway of the lifting device and workpiece during the hoisting process, avoid positioning deviation caused by inertia or airflow disturbance, and improve the stability of the hoisting operation. The synergistic effect of the ground lower limit component and the top lifting mechanism further enhances the rigid constraint of the lifting device in the vertical direction, reducing the risk of collision between the workpiece and surrounding equipment.

[0049] As one specific implementation of the sliding component in this application, refer to Figure 1 and Figure 2 The sliding assembly includes slide rails 11 arranged opposite to each other at both ends of the crossbeam 1. A horizontal support beam 2 is slidably connected inside the slide rails 11. Each slide rail 11 is equipped with a motor-screw drive 12 for driving the horizontal support beam 2 to slide.

[0050] The slide rail 11 is a guide structure extending along the length of the crossbeam 1. It can be implemented using a high-precision linear guide rail. Its function is to provide a stable sliding path for the horizontal support beam 2, ensuring the straightness of the clamping assemblies 3 on both sides during synchronous movement. The horizontal support beam 2 is the main structure bearing the side support mechanism. It can be formed by welding a box-shaped steel beam. Its function is to transfer the loads of the rotary drive assembly and the clamping assembly 3 to the slide rail 11 while maintaining the rigid support of the side support mechanism. The motor-screw drive 12 is a linear drive unit integrated with a servo motor and a ball screw pair. It can be implemented using a closed-loop control servo system. Its function is to convert the rotational motion of the motor into the linear displacement of the horizontal support beam 2 through the screw and nut pair, achieving precise adjustment of the spacing between the clamping assemblies 3.

[0051] The slide rails 11 are symmetrically fixed at both ends of the crossbeam 1, and the horizontal support beam 2 forms a sliding pair with the slide rails 11 through a slider. When it is necessary to adjust the clamping distance of the fixture assembly 3, the motor-screw drive 12 is activated, and the servo motor outputs torque to drive the ball screw to rotate, thereby moving the horizontal support beam 2 along the slide rails 11. Since the motor-screw drive 12 is independently installed in both slide rails 11, the horizontal support beams 2 on both sides can achieve synchronous or asynchronous movement. For example, when clamping asymmetrical workpieces, the position of one side of the support beam can be adjusted individually. A dustproof sealing strip can be provided on the surface of the slide rails 11 to prevent metal debris from entering the sliding surface and affecting the positioning accuracy.

[0052] This solution uses a motor-screw drive 12 to directly drive the horizontal support beam 2, eliminating drift errors caused by changes in hydraulic system oil temperature and avoiding the cumulative backlash error of chain drive. Simultaneously, the closed-loop control characteristics of the servo motor provide real-time feedback of displacement, improving the alignment accuracy of the fixture assembly 3 to the millimeter level and solving the problem of inefficient manual repetitive calibration.

[0053] Through the above technical solution, this application achieves precise control of the spacing of the clamping assembly 3. When clamping workpieces with different diameter rollers, the positions of the horizontal support beams 2 on both sides can be quickly adjusted through programmed control to ensure that the clamping center coincides with the workpiece axis. At the same time, the motor-screw drive method avoids the slippage or jamming phenomenon that is prone to occur in traditional transmission mechanisms, significantly improving the reliability and repeatability of hoisting operations.

[0054] As a preferred embodiment of the side support mechanism in this application, refer to Figure 1 , Figure 2 and Figure 5 The side support mechanism includes a side box 21, which is fixed to the outer end of the horizontal support beam 2. The drive assembly includes a drive motor 211 and a reducer 212 disposed in the side box 21. The output end of the drive motor 211 is connected to the power input end of the reducer 212, and the power output end of the reducer 212 is fixedly connected to the clamp assembly 3.

[0055] The side housing 21 is a closed box-shaped structure for accommodating the drive assembly. It can be implemented using welded steel plates to form a hollow cavity. Its rigid connection to the horizontal support beam 2 ensures the stability of the drive assembly during operation. The drive motor 211 provides rotational power and can be implemented using an AC servo motor. Precise control of the output speed and direction allows for angle adjustment of the clamp assembly 3. The reducer 212 is a transmission device that matches the output characteristics of the drive motor 211 with the load requirements. It can be implemented using a planetary gear reducer 212, ensuring reliable power output of the clamp assembly 3 when carrying heavy loads by reducing the speed and increasing the torque. The fixed connection between the power output end and the clamp assembly 3 refers to the use of a rigid coupling or flange for power transmission. Specifically, a transition flange combined with high-strength bolts can be used to avoid transmission clearance affecting positioning accuracy.

[0056] The drive motor 211 is installed inside the side housing 21, and its output shaft is coaxially connected to the input shaft of the reducer 212 via a coupling. The output shaft of the reducer 212 extends to the outside of the side housing 21 and is rigidly connected to the rotating shaft 312 of the clamping assembly 3 via a flange. When the drive motor 211 starts, the power is reduced and amplified by the reducer 212 and then transmitted to the clamping assembly 3, causing it to rotate around its axis. The side housing 21 provides full enclosure protection for the drive motor 211 and the reducer 212, preventing external impacts or dust intrusion from affecting the transmission accuracy. The welded fixing structure between the horizontal support beam 2 and the side housing 21 ensures that the drive assembly maintains overall rigidity when subjected to workpiece flipping torque.

[0057] Traditional lifting devices often use external hydraulic motors or sprocket and chain drives for their rotary drive mechanisms. These exposed components are susceptible to contamination, and chain drives are prone to slippage. This solution integrates the drive motor 211 and reducer 212 within a sealed side housing 21, using a rigid coupling to directly transmit power. This eliminates the impact of transmission backlash on positioning accuracy and enhances impact resistance through the housing structure. This application achieves a compact layout and stable transmission of the drive components, solving the reliability degradation problem caused by the exposed transmission mechanism in traditional lifting devices. The enclosed structure of the side housing 21 effectively isolates external environmental interference, and the direct connection between the reducer 212 and the drive motor 211 avoids positioning deviations caused by a loose transmission chain, thus ensuring precise angle control of the clamping assembly 3 when flipping heavy workpieces.

[0058] As one specific embodiment of the clamping assembly 3, refer to Figures 1-5The clamp assembly 3 includes an arc-shaped clamping plate 31. Several arc-shaped top clamping plates 32 are fixedly connected at intervals on the clamping end face of the arc-shaped clamping plate 31. Several stiffening plates 33 are fixedly connected between each arc-shaped top clamping plate 32 and the arc-shaped clamping plate 31. It also includes several reinforcing plates 35. The reinforcing plates 35 are welded horizontally and vertically and then welded to the outer side of the arc-shaped clamping plate 31. A fixed seat 311 is welded to the outer side of the arc-shaped clamping plate 31. A rotating shaft 312 is fixedly connected to the fixed seat 311. The rotating shaft 312 is fixedly connected to the power output end of the reducer 212. Sliding plates 34 are welded to both ends of the arc-shaped clamping plate 31.

[0059] The arc-shaped clamping plate 31 refers to the arc-shaped plate structure that contacts the outer wall of the roller workpiece. It can be made of high-strength steel plate, with its radius of curvature matching the outer diameter of the target workpiece, used to wrap and clamp the outer surface of the workpiece. The arc-shaped top clamping plate 32 refers to the protruding structures spaced along the inner wall of the arc-shaped clamping plate 31. It can be fixed to the clamping plate surface by welding, used to increase the friction between the clamping surface and the workpiece. The stiffening plate 33 refers to the triangular rib connecting the arc-shaped top clamping plate 32 and the arc-shaped clamping plate 31. It can be made of steel plate after cutting and welding, used to enhance the bending stiffness of the top clamping plate. The reinforcing plate 35 refers to the grid-like support structure cross-welded to the outside of the arc-shaped clamping plate 31. It can be made of channel steel or I-beams cross-welded, used to distribute the clamping load and suppress clamping plate deformation. The fixed seat 311 refers to the mounting base welded to the outside of the arc-shaped clamping plate 31. It can be machined from cast steel, used to connect the rotating shaft 312 and transmit torque. The rotating shaft 312 refers to the transmission component connecting the output end of the reducer 212 and the clamping assembly 3. Specifically, it can adopt a hollow shaft structure to reduce weight and is used to realize the rotational movement of the clamp around the workpiece axis. The slide plate 34 refers to the extension plate welded to both ends of the arc-shaped clamping plate 31. Specifically, it can be made of steel plate with anti-slip texture and is used to provide support and prevent slippage when the workpiece is placed.

[0060] Specifically, the arc-shaped clamping plate 31 forms multi-point contact with the workpiece surface through the arc-shaped top clamping plate 32 on its inner wall. The stiffening plate 33 reinforces the top clamping plate vertically to prevent it from bending under stress during clamping. The reinforcing plate 35 forms a cross-grid structure on the outer side of the clamping plate and is rigidly connected to the outer wall of the clamping plate by welding, effectively improving the overall torsional resistance of the clamping plate. The connection between the fixed base 311 and the rotating shaft 312 allows the fixture to rotate 360 ​​degrees around the workpiece axis, and the reducer 212 drives the workpiece to flip. After the clamping action is completed, the sliding plate 34 contacts the ground or the workpiece placement platform to form an auxiliary support surface, preventing the clamping force from being borne entirely by the rotating shaft 312.

[0061] Traditional clamps often employ a flat clamping plate with a simple rib structure. When clamping large-diameter workpieces, the clamping plate is prone to deformation due to localized stress concentration, and they lack a flipping drive interface. This solution significantly improves clamping stability through the fitting design of the arc-shaped clamping plate 31 with the curved surface of the workpiece, combined with the three-dimensional support network formed by the cross-reinforcing plates 35. The direct connection structure between the rotating shaft 312 and the reducer 212 simplifies the flipping drive path and reduces transmission losses. The setting of the slide plate 34 forms a multi-point support system, effectively dispersing the bending moment generated by the workpiece's own weight. This application achieves efficient clamping and reliable flipping of large roller workpieces. The combined design of the arc-shaped top clamping plate 32 and the stiffening plate 33 enhances the deformation resistance of the clamping surface. The cross-reinforcing plates 35 effectively suppress the twisting of the clamping plate under heavy loads. The synergistic effect of the rotating shaft 312 and the slide plate 34 ensures balanced force on the workpiece during the flipping process, adapting to the clamping requirements of workpieces of different diameters and reducing the risk of damage to the workpiece surface caused by excessive local pressure.

[0062] As a preferred example of a positioning detection component, the positioning detection component includes laser emitters 36 fixedly installed at the four corners and center of any arc-shaped clamp 31, and a target frame for sensing laser beams fixedly connected at the four corners and center of another arc-shaped clamp 31. The control mechanism controls the drive motor 211 to rotate and adjust the arc-shaped clamp 31 according to the position of the laser beam within the target frame. When the laser beams emitted by all laser emitters 36 are all projected onto the center position of the corresponding target frame, the positions of the two sets of arc-shaped clamps 31 are completely corresponding.

[0063] The laser emitter 36 is a directional light source device capable of emitting visible or invisible laser beams. It can be implemented using a semiconductor laser or a fiber laser, and its installation position is geometrically calibrated to ensure that the beam axis is perpendicular to the clamping surface of the fixture assembly 3. The target frame is a receiving device with photosensitive elements, which can be implemented using an array of photoelectric sensors or a CCD photosensitive panel. Its surface is divided into coordinate grids for quantifying the laser impact point position.

[0064] Before the two sets of arc-shaped clamping plates 31 close and clamp the roller workpiece, laser emitters 36 at the four corners and the center continuously project beams onto the opposite target frame. When there is an angular deviation between the two clamping assemblies 3, the point of the beam landing on the target frame will deviate from the center area. At this time, the control mechanism collects the coordinate offset of each target frame in real time, calculates the rotation adjustment amount through vector synthesis, and drives the corresponding side motor to rotate. When all beam landing points are located at the center of the target frame, it indicates that the clamping surfaces of the two arc-shaped clamping plates 31 are completely aligned. At this time, the adjustment stops and the clamping lock state is entered. This process is fully automated and requires no manual intervention.

[0065] Traditional positioning methods rely on operators visually judging the clamp alignment, which is prone to subjective errors and inefficient. While existing mechanical positioning pin structures can achieve coarse positioning, they cannot adapt to the dynamic adjustment requirements of workpieces with different diameters. This solution achieves millimeter-level positioning accuracy through multi-beam cross-detection and closed-loop control, while also possessing adaptability to accommodate the precise clamping needs of workpieces of different sizes. This application effectively solves the problem of uneven force distribution caused by clamp misalignment during the hoisting of large roller workpieces, avoiding damage to the workpiece surface caused by localized stress concentration. The automated detection and adjustment mechanism significantly shortens the clamp alignment time, increasing hoisting efficiency by approximately 40%, while eliminating the safety hazards of manual operation. A multi-position laser detection network covers the key stress areas of the clamp, ensuring comprehensive calibration of the clamping posture and providing accurate reference conditions for subsequent flipping operations.

[0066] As a preferred embodiment of the clamp assembly 3, refer to Figure 3 A pressure sensor 37 is provided inside the clamp assembly 3. The control mechanism controls the sliding assembly to adjust the output pressure of the clamp assembly 3 according to the detection value of the pressure sensor 37.

[0067] The pressure sensor 37 is a detection device used to monitor the clamping force applied by the clamping assembly 3 to the roller workpiece in real time. It can be implemented using a piezoelectric sensor or a strain gauge sensor, integrated on the contact surface between the arc-shaped clamping plate 31 and the arc-shaped top clamping plate 32, and used to convert mechanical pressure signals into electrical signals. The control mechanism is an automated control system that receives signals from the pressure sensor 37 and performs logic processing. It can be implemented using a programmable logic controller (PLC) or an embedded microcontroller, generating control commands by comparing a preset pressure threshold range with the real-time detection value. The output pressure is the vertical clamping force applied by the clamping assembly 3 to the surface of the roller workpiece. This can be dynamically adjusted through a closed-loop control algorithm; for example, when the detected value is below a set threshold, the clamping distance is increased to compensate for the pressure, and vice versa.

[0068] During the clamping operation, pressure sensor 37 continuously collects pressure distribution data between the clamping assembly 3 and the contact surface of the roller workpiece, and transmits the signal to the control mechanism. The control mechanism performs weighted calculations on the detection values ​​of multiple pressure sensors 37 to determine whether the current clamping force is within a preset safe range. If excessive pressure is detected in a local area, a reverse movement command is sent to the drive motor 211 of the sliding assembly, causing the horizontal support beam 2 to move outward along the slide rail 11, thereby reducing the clamping force; if insufficient pressure is detected, the drive motor 211 is controlled to drive the horizontal support beam 2 inward to increase the clamping force. This adjustment process forms a closed-loop control through a real-time feedback mechanism, ensuring that the clamping force is evenly distributed on the workpiece surface and avoiding workpiece deformation or slippage due to clamping force imbalance.

[0069] Traditional lifting devices rely on operators' experience to manually adjust the clamping force, lacking quantitative detection methods. This can easily lead to workpiece slippage due to insufficient clamping force or indentation on the workpiece surface due to excessive clamping force. This solution, through the linkage control of pressure sensor 37 and the sliding component, achieves real-time monitoring and automatic compensation of the clamping force, solving the problem of clamping reliability caused by human judgment errors. This application can dynamically maintain the stability of the clamping force during lifting, preventing sudden changes in local pressure caused by uneven workpiece surfaces or center of gravity shifts, ensuring uniform force contact between the clamping mechanism and the workpiece. Simultaneously, a closed-loop control mechanism rapidly responds to pressure changes, avoiding workpiece slippage or structural damage caused by clamping force fluctuations, significantly improving the safety and automation level of lifting operations.

[0070] As a preferred implementation of the upper limit component, refer to Figure 1 and Figure 2 The upper limit assembly includes a fixed frame 4, the top of the crossbeam 1 is fixedly connected to the fixed frame 4, and the vertical lifting mechanism includes a support frame 6, on which a dual-axis motor 61 is provided. The output end of the dual-axis motor 61 is connected to the fixed frame 4 through a wire-pulley block 41.

[0071] The fixed frame 4 is a metal frame structure rigidly connected to the top of the crossbeam 1, which can be achieved by welding or bolting. It is used to bear the tension of the vertical lifting mechanism and transmit it to the main body of the crossbeam 1. The support frame 6 is a load-bearing structure, which can be achieved by welding H-beams to form a truss structure, and is used to provide a stable mounting base for the dual-axis motor 61. The dual-axis motor 61 refers to a drive device with bidirectional output shafts, which can be implemented as a synchronous motor with a reduction gearbox. The symmetrical lifting action is achieved by synchronously driving the wire rope-pulley block 41 through the output shafts on both sides. The wire rope-pulley block 41 is a transmission mechanism composed of wire rope and fixed pulleys. It can be implemented by using multi-strand galvanized wire rope with cast iron pulleys. The lifting stroke of the fixed frame 4 is controlled by the winding and unwinding of the wire rope driven by the dual-axis motor 61.

[0072] The fixed frame 4 is rigidly connected to the top of the crossbeam 1 by welding, and the support frame 6 is fixed to the foundation on both sides of the crane rail by anchor bolts. A dual-shaft motor 61 is installed at the top of the crossbeam 1 of the support frame 6. Its output shafts on both sides are connected to two sets of wire rope-pulley systems 41. One end of the wire rope is wound around the motor output shaft, and the other end passes through the pulley system and connects to the lifting points at the four corners of the fixed frame 4. When the dual-shaft motor 61 starts, the output shafts on both sides rotate synchronously, driving the wire rope to be wound or released synchronously, causing the fixed frame 4 to rise and fall vertically. This structure, through the symmetrical arrangement of the wire rope-pulley systems 41, offsets unilateral force deviations, ensuring that the crossbeam 1 remains horizontal during lifting and lowering.

[0073] Traditional anti-sway devices often use a single motor to drive a single-sided lifting mechanism, which is prone to tilting of the lifting device due to asynchronous transmission. This solution, however, uses a dual-axis motor 61 to synchronously output power, combined with a symmetrically distributed wire-pulley block 41, eliminating torque imbalance during lifting. Furthermore, in existing technologies, the lifting mechanism is often separate from the lifting device body, requiring additional guiding devices. This solution, however, uses a direct connection between the fixed frame 4 and the crossbeam 1, allowing the lifting action to act directly on the lifting device body, reducing error accumulation in intermediate transmission links. This application achieves uniform force distribution on both sides during vertical lifting of the lifting device, effectively suppressing horizontal swaying caused by unilateral traction force deviation. The synergistic effect of the dual-axis motor 61 and the wire-pulley block 41 allows for rapid response to control commands. During the lifting start and stop phases, symmetrical tension counteracts inertial sway, ensuring the roller workpiece maintains a stable posture during height adjustment and avoiding the sway amplitude accumulation problem caused by the lag in response of traditional mechanical damping structures.

[0074] Furthermore, the support frame 6 has limiting grooves at the four corners of its bottom, and the upper end of the fixed frame 4 is fixedly connected with a second limiting rod 42 that matches the limiting groove.

[0075] The limiting grooves are recessed structures located at the four corners of the bottom of the support frame 6. Specifically, they can be U-shaped, T-shaped, or dovetail grooves. Their depth and width are designed according to the dimensions of the second limiting rod 42, guiding its insertion path and limiting lateral displacement. The second limiting rod 42 is a columnar or plate-shaped protrusion fixed to the upper end of the fixed frame 4. Specifically, it can be a cylindrical steel rod, a rectangular guide block, or a positioning pin with a tapered end. Its length and cross-sectional shape form a clearance fit or interference fit with the limiting groove, mechanically interlocking with the limiting groove during vertical lifting.

[0076] During hoisting operations, when the fixed frame 4 is vertically raised and lowered via the wire rope-pulley block 41, the second limiting rod 42 is inserted into the limiting groove at the bottom of the supporting frame 6 as the fixed frame 4 moves. The cooperation of the four sets of limiting grooves and the rods forms a four-point constraint, ensuring that the fixed frame 4 always moves along a preset vertical trajectory during the lifting process. For example, when the lifting device is subjected to external load impact or inertia, the contact surface between the rod and the limiting groove generates a reaction force, counteracting the lateral offset tendency, thereby maintaining the relative positional stability between the supporting frame 6 and the fixed frame 4.

[0077] In some specific embodiments, a wear-resistant liner can be added to the inner wall of the limiting groove to extend its service life, and the end of the second limiting rod 42 can be chamfered to assist in centering and insertion. A pressure sensor 37 can also be installed at the bottom of the support frame 6 to monitor the contact pressure between the rod and the limiting groove in real time. When the pressure distribution is abnormal, an alarm is triggered and the lifting operation is paused.

[0078] Traditional lifting devices often employ single-point guide columns or simple limiting blocks to prevent offset, which are weak in resisting lateral loads and prone to wear and tear. This solution, however, uses a distributed arrangement of four sets of limiting slots and insert rods to form a rigid constraint network, effectively suppressing multi-directional offsets. This is particularly effective when lifting extra-long roller workpieces, preventing frame twisting caused by center of gravity shift. This application also addresses the problem of relative displacement between the support frame 6 and the fixed frame 4 during lifting due to uneven force or inertia, ensuring the vertical lifting mechanism always operates stably along a predetermined trajectory. This reduces the risk of wire rope eccentricity caused by frame misalignment and also decreases the probability of collisions between the lifting device and surrounding equipment.

[0079] As a preferred embodiment of the lower limit component, refer to Figure 1 and Figure 2 The lower limit component includes a base 5, which has two sets of symmetrical arrangement about the roller workpiece. A horizontal guide rail 51 is provided on the base 5, and a sliding seat 52 is slidably connected to the horizontal guide rail 51. A limit sleeve 53 is provided on the sliding seat 52. A first limit rod 23 that cooperates with the limit sleeve 53 is fixedly connected to the bottom of the side box 21.

[0080] The base 5 is the basic support structure for the horizontal guide rail 51. It can be implemented by welding steel plates and anchoring them to a concrete base. Its symmetrical arrangement provides stable ground support for the lifting device. The horizontal guide rail 51 is a guiding mechanism installed on the base 5. It can be implemented using a combination of linear guide rails and ball bearings, used to guide the sliding seat 52 along a preset path. The sliding seat 52 is a moving component slidably connected to the horizontal guide rail 51. It can be implemented using a steel frame structure with self-lubricating bearings, and can adjust the position of the limiting sleeve 53 according to the workpiece size. The limiting sleeve 53 is a constraint component installed on the sliding seat 52. It can be implemented using a steel pipe structure with wear-resistant bushings embedded in the inner wall, forming a rigid limit through its connection with the first limiting rod 23. The first limiting rod 23 is a positioning component vertically fixed to the bottom of the side box 21. It can be implemented using an alloy steel rod with a chrome-plated surface. After being inserted into the limiting sleeve 53, it can limit the horizontal displacement of the side box 21.

[0081] Before the hoisting operation, two sets of bases 5 are symmetrically arranged on the ground bases on both sides of the roller workpiece. The horizontal guide rail 51 is fixed to the surface of the base 5 with bolts, and the sliding seat 52 is assembled on the horizontal guide rail 51 by a ball bearing slider. The operator can move the sliding seat 52 along the guide rail manually or electrically to keep the axis of the limiting sleeve 53 coaxial with the first limiting rod 23 at the bottom of the side box 21 of the lifting device. When the lifting device descends to the predetermined height, the first limiting rod 23 is inserted into the limiting sleeve 53, forming a rigid constraint in the vertical direction. At this time, the sleeve structure between the side box 21 and the sliding seat 52 can effectively suppress the horizontal swaying of the lifting device during lifting or translation, while the sliding freedom of the horizontal guide rail 51 allows the lifting device to adaptively adjust the distance between the two limiting sleeves 53 when clamping workpieces of different diameters.

[0082] Traditional anti-sway devices often use counterweights or hydraulic dampers for inertia compensation, which suffer from lag and cannot achieve a rigid connection between the lifting device and the ground. This solution, by setting a movable base 5 and a limiting sleeve 53, automatically engages and locks with the ground limiting mechanism during the lifting device's descent. This retains the lifting device's horizontal position adjustment capability while achieving immediate anti-sway control through mechanical limiting, significantly improving system response speed and positioning stability. This application can pre-establish a rigid connection point with the side box 21 of the lifting device on the ground, effectively eliminating horizontal swaying caused by inertia or airflow during lifting. The sleeve structure between the limiting sleeve 53 and the first limiting rod 23 can quickly form a vertical constraint, avoiding the need for repeated manual adjustments to the limiting device. The sliding design of the horizontal guide rail 51 allows the device to adapt to roller workpieces of different sizes, maintaining the lifting device's versatility while ensuring anti-sway performance. This structure also features low maintenance costs and strong impact resistance, making it suitable for industrial scenarios such as metallurgy and shipbuilding where heavy-load, high-frequency lifting is required.

[0083] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0084] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0085] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sway-prevention structure for a gantry crane lifting device, characterized in that, It includes a crossbeam (1), the lower end of which is provided with a clamping mechanism for clamping workpieces, and also includes an anti-sway component, the anti-sway component including an upper limit component set on the upper end of the crossbeam (1) and a lower limit component fixed on the ground, and also includes a vertical lifting mechanism, the vertical lifting mechanism and the upper limit component are connected by a wire-pulley block (41) to control the upper limit component to move in the vertical direction.

2. The anti-sway structure for a bridge crane lifting device according to claim 1, characterized in that, The upper limit assembly includes a fixed frame (4), the top of the crossbeam (1) is fixedly connected to the fixed frame (4), the vertical lifting mechanism includes a support frame (6), the support frame (6) is provided with a dual-axis motor (61), and the output end of the dual-axis motor (61) is connected to the fixed frame (4) through a wire-pulley assembly (41).

3. The anti-sway structure for a bridge crane lifting device according to claim 2, characterized in that, The support frame (6) is provided with limiting grooves at the four corners of the bottom, and the upper end of the fixed frame (4) is fixedly connected with a second limiting rod (42) that matches the limiting groove.

4. The anti-sway structure for a bridge crane lifting device according to claim 3, characterized in that, The lower limit assembly includes a base (5), which has two sets of symmetrical arrangement about the roller workpiece. A horizontal guide rail (51) is provided on the base (5), and a sliding seat (52) is slidably connected on the horizontal guide rail (51). A limit sleeve (53) is provided on the sliding seat (52), and a first limit rod (23) that cooperates with the limit sleeve (53) is fixedly connected to the bottom of the clamping mechanism.

5. The anti-sway structure for a bridge crane lifting device according to claim 1, characterized in that, The clamping mechanism includes two sets of sliding components arranged opposite each other on the crossbeam (1). The outer end of the sliding component is fixedly connected to a side support mechanism. The side support mechanism is provided with a rotary drive component. The rotation output end of the rotary drive component is fixedly connected to a clamping component (3). The four corners and the center of the two sets of clamping components (3) are provided with corresponding positioning detection components. The clamping component (3) is provided with a vision detection mechanism inside. It also includes a control mechanism. The control mechanism controls the rotary drive component according to the positioning detection component to adjust the two sets of clamping components (3) to be directly opposite each other. The control mechanism adjusts the clamping end position of the clamping component (3) to be directly opposite the side wall of the roller workpiece through the vision detection mechanism.

6. The anti-sway structure for a bridge crane lifting device according to claim 5, characterized in that, The sliding assembly includes slide rails (11) arranged opposite to each other at both ends of the crossbeam (1). A horizontal support beam (2) is slidably connected inside the slide rail (11). Each slide rail (11) is provided with a motor-screw drive (12) for driving the horizontal support beam (2) to slide.

7. The anti-sway structure for a bridge crane lifting device according to claim 6, characterized in that, The side support mechanism includes a side box (21), which is fixed to the outer end of the horizontal support beam (2). The drive assembly includes a drive motor (211) and a reducer (212) disposed in the side box (21). The output end of the drive motor (211) is connected to the power input end of the reducer (212), and the power output end of the reducer (212) is fixedly connected to the clamp assembly (3).

8. The anti-sway structure for a bridge crane lifting device according to claim 5, characterized in that, The clamp assembly (3) includes an arc-shaped clamping plate (31), and several arc-shaped top clamping plates (32) are fixedly connected at intervals on the clamping end face of the arc-shaped clamping plate (31). Several stiffening plates (33) are fixedly connected between each arc-shaped top clamping plate (32) and the arc-shaped clamping plate (31). It also includes several reinforcing plates (35). Several reinforcing plates (35) are welded horizontally and vertically to the outer side of the arc-shaped clamping plate (31) and fixedly welded. A fixed seat (311) is welded to the outer side of the arc-shaped clamping plate (31). A rotating shaft (312) is fixedly connected to the fixed seat (311). The rotating shaft (312) is fixedly connected to the power output end of the reducer (212). Slide plates (34) are welded to both ends of the arc-shaped clamping plate (31).

9. The anti-sway structure for a bridge crane lifting device according to claim 5, characterized in that, The positioning detection component includes laser emitters (36) fixedly installed at the four corners and center of any arc-shaped clamp (31). Target frames for sensing laser beams are fixedly connected at the four corners and center of another arc-shaped clamp (31). The control mechanism controls the drive motor (211) to rotate and adjust the arc-shaped clamp (31) according to the position of the laser beam within the target frame. When all the laser beams emitted by the laser emitters (36) are projected onto the center of the corresponding target frame, the positions of the two sets of arc-shaped clamps (31) are completely corresponding.

10. The anti-sway structure for a bridge crane lifting device according to claim 5, characterized in that, The clamp assembly (3) is provided with a pressure sensor (37) inside. The control mechanism controls the sliding assembly to adjust the output pressure of the clamp assembly (3) according to the detection value of the pressure sensor (37).

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