High-stability intelligent double-beam crane

Abstract

The invention discloses a high-stability intelligent double-beam crane which comprises a support, two parallel guide rails are fixed to the support, a tackle is arranged between the two guide rails in a sliding mode, a lifting table is arranged below the tackle, a plurality of lifting ropes are distributed on the periphery of the lifting table, and a driving motor is arranged on the tackle. Compared with the prior art, the method has the advantages that the stability, the self-adaptability and the reliability are improved, and remarkable comprehensive benefits are brought.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, and particularly relates to a high-stability intelligent double-beam crane. BACKGROUND

[0002] As the core equipment of modern industrial material handling, double-beam cranes are widely used in key fields such as ports, workshops, power stations and heavy equipment manufacturing. In high-end application scenarios such as precise equipment installation and aerospace component hoisting, the anti-swing performance, precise positioning and self-adaptive hoisting capacity of the crane are required to be harsh.

[0003] At present, the traditional and part of the intelligent double-beam cranes on the market mostly adopt a simple form of a single main hook or one or two auxiliary hooks. For the goods with eccentric center of gravity or irregular shape, it is easy to cause tilting, sliding or even falling accidents, which needs to be repeatedly adjusted, time-consuming and laborious, and has high risk.

[0004] Therefore, it is necessary to provide a high-stability intelligent double-beam crane to solve the problems in the background art. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-stability intelligent double-beam crane, comprising a support, two parallel guide rails are fixed on the support, a trolley is slidingly arranged between the two guide rails, a lifting platform is arranged below the trolley, a plurality of lifting ropes are circumferentially distributed around the lifting platform, and a driving motor is arranged on the trolley.

[0006] Further, a plurality of rotatable winches are circumferentially distributed in the lifting platform, and each lifting rope is wound into the corresponding winch.

[0007] Further, a plurality of sliding rails are circumferentially distributed on the edge of the lifting platform, a sliding block is slidingly arranged in each sliding rail, and a pulley is slidingly arranged in the sliding block.

[0008] Further, a telescopic cylinder is arranged between each sliding block and the lifting platform.

[0009] Further, a pressure sensor is arranged in each sliding block.

[0010] Further, a guide ring is sleeved on the periphery of the winch, and a through hole is formed in the side wall of each guide ring.

[0011] Further, a plurality of threadedly connected lead screws are vertically arranged in the guide ring, and the upper and lower ends of each lead screw are rotatably arranged in the trolley and the lifting platform, respectively.

[0012] Further, the center of the lifting platform is rotatably provided with a center shaft, the upper end of the center shaft is connected to a driving motor, the lower end of the center shaft penetrates to the lower side of the lifting platform, and the center shaft is fixedly sleeved with a center gear; The lower end of each of the winding drums also penetrates to the lower side of the lifting platform, and is fixed with a winding gear, and each winding gear is engaged with the center gear.

[0013] Further, the lower end of each of the lead screws penetrates to the lower side of the lifting platform, and is fixed with a guide gear engaged with one of the winding gears.

[0014] Compared with the prior art, the present application has the following beneficial effects: In the present application, the double parallel guide rails and the circumferentially distributed multiple lifting ropes constitute a stable load-bearing frame, which disperses the load from the physical structure and provides inherent stability superior to single-beam or double-point lifting. The force on the lifting ropes is monitored in real time by the pressure sensor in the sliding block, and once the cargo sway is detected, the control system can immediately drive the telescopic cylinder to adjust the height of the lifting rope force point and generate a reverse damping force, actively and quickly reducing the sway, realizing the leap from passive adaptation to active suppression.

[0015] In the present application, the planetary gear structure of the center gear driving the winding gear ensures that all winding drums rotate at the same angular velocity, so that the length of all lifting ropes is synchronized, eliminating the tilting of the cargo and the shaking during lifting due to different rope lengths, and realizing smooth lifting.

[0016] In the present application, the force on each lifting rope is sensed by the pressure sensor before lifting starts, and if the force is uneven, the control system will automatically adjust the corresponding telescopic cylinder to change the effective length of the lifting rope and automatically pull the center of gravity of the cargo back to the center of the lifting platform, realizing one-key automatic leveling. Moreover, by independently controlling the multiple telescopic cylinders distributed circumferentially, the height of each lifting point can be flexibly adjusted to customize the lifting network for irregular cargo such as L-shaped and long strip-shaped cargo, perfectly fit the cargo profile, avoid stress concentration, and expand the application range of the crane and the ability to handle special cargo.

[0017] In the present application, the linkage mechanism driven by the winding gear and the guide gear ensures that the rotation of the winding drum is synchronized with the movement of the guide ring, and the guide ring guides the lifting ropes to be accurately, tightly and neatly arranged on the winding drum through the through holes in the side wall of the guide ring, eliminating messy ropes, jumping ropes and extrusion, and prolonging the service life of the lifting ropes. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an intelligent double-beam crane with high stability; Figure 2 It is a structural schematic diagram of a lifting platform; Figure 3 It is a plan view of the lifting platform; Figure 4 is a schematic view of the overhead structure of the lifting platform; Figure 5 is a schematic view of the overhead structure of the lifting platform; In the figure: 1, support; 2, guide rail; 3, trolley; 31, center shaft; 32, center gear; 33, winding gear; 34, guide gear; 4, lifting platform; 41, sliding rail; 42, sliding block; 43, winding drum; 44, pulley; 45, telescopic cylinder; 46, guide ring; 461, through hole; 47, screw rod; 5, lifting rope; 6, driving motor. DETAILED DESCRIPTION

[0019] Please refer to Figures 1-5 In the embodiment of the present application, a high-stability intelligent double-beam crane includes a support 1, two parallel guide rails 2 are fixed on the support 1, a trolley 3 is slidingly arranged between the two guide rails 2, a lifting platform 4 is arranged below the trolley 3, a plurality of lifting ropes 5 are circumferentially distributed around the lifting platform 4, and a driving motor 6 is arranged on the trolley 3.

[0020] The plurality of lifting ropes 5 share the load, increasing the number of supporting points, and the lifting process is more stable, avoiding tilting and shaking that easily occurs when lifting by a single point or two points.

[0021] In the embodiment, a plurality of rotatable winding drums 43 are circumferentially distributed in the lifting platform 4, and each of the lifting ropes 5 is wound into the corresponding winding drum 43.

[0022] In the embodiment, a plurality of sliding rails 41 are circumferentially distributed on the edges of the lifting platform 4, a sliding block 42 is slidingly arranged in each of the sliding rails 41, and a pulley 44 is slidingly arranged in the sliding block 42.

[0023] Each of the lifting ropes 5 passes through the pulley 44 and is wound in the corresponding winding drum 43, ensuring that the lifting ropes 5 are always arranged in order on the winding drum 43 during winding and unwinding, and will not be pressed, jumped, or wound together, In the embodiment, a telescopic cylinder 45 is arranged between each of the sliding blocks 42 and the lifting platform 4.

[0024] The height of each sliding block 42 can be adjusted by the telescopic cylinder 45, so that the height of each pulley 44 can be controlled respectively, and the height of each lifting rope 5 can be adjusted according to the shape and center of gravity of the cargo, so as to use the shape of the cargo and ensure that the center of gravity is in the middle.

[0025] Secondly, for irregular cargos such as L-shaped, long-strip-shaped, cylindrical, etc., the height of the lifting rope 5 at different positions can be adjusted to form a lifting network that perfectly fits the cargo profile, avoiding concentrated stress or sliding. For example, when lifting a long pipe, the lifting points at both ends can be adjusted to be higher, and the lifting point in the middle can be adjusted to be lower, so that it is more stable.

[0026] In this embodiment, each slider 42 is provided with a pressure sensor.

[0027] The pressure sensor can detect the force on each of the lifting ropes 5 in the lifting platform 4. If uneven force is detected, the control system will instruct the corresponding telescopic cylinder to adjust the length and height of the corresponding lifting rope until all the lifting ropes 5 are evenly stressed, and automatically pull the center of gravity of the goods back to directly below the center of the lifting platform.

[0028] Furthermore, when the pressure sensor detects that the cargo is swaying, the control system can quickly and accurately coordinate multiple telescopic cylinders 45 to generate a force opposite to the swaying direction by adjusting the force point in real time, thereby actively and quickly reducing the swaying.

[0029] In this embodiment, a guide ring 46 is sleeved around the outer periphery of the roll 43, and a through hole 461 is opened on the side wall of each guide ring 46.

[0030] Each of the lifting ropes 5 passes through the corresponding through hole 461 and is wound around the corresponding drum 43, ensuring that the lifting rope 5 is smoothly wound in the drum 43.

[0031] In this embodiment, the guide ring 46 has multiple threaded screws 47 running through it, and the upper and lower ends of each screw 47 are respectively rotatably mounted in the trolley 3 and the lifting platform 4.

[0032] In other words, the height of the guide ring 46 can be adjusted by the lead screw 47, so that the hoisting rope 5 can only enter or leave the drum 43 from that point. By controlling the height of the guide ring 46, the winding position of the hoisting rope 5 on the drum 43 is controlled, ensuring that each turn of wire rope is close to the previous turn, neatly and parallelly arranged. The position of the hoisting rope 5 wound on the drum 43 can be actively controlled, ensuring that the hoisting rope 5 is evenly distributed in the drum 43.

[0033] In this embodiment, a central shaft 31 is rotatably provided at the center of the lifting platform 4. The upper end of the central shaft 31 is connected to the drive motor 6, and the lower end extends through to the bottom of the lifting platform 4 and is fixedly fitted with a central gear 32. The lower end of each of the rollers 43 also extends to the bottom of the platform 4 and is fixed with a winding gear 33, and each winding gear 33 meshes with the central gear 32.

[0034] In this embodiment, the lower end of each lead screw 47 extends through to the bottom of the lifting platform 4 and is fixed with a guide gear 34, which meshes with one of the winding gears 33.

[0035] Through the planetary structure of the central gear 32 and the winding gear 33, all drums 43 rotate at the same angular velocity, and the winding and unwinding lengths of all lifting ropes 5 are synchronized, achieving smooth lifting and lowering of goods and preventing tilting due to uneven rope lengths.

[0036] Each time the drum 43 rotates, it winds up or unwinds a fixed length of the hoisting rope 5. At the same time, the guide gear 34 also rotates a certain number of times, driving the guide ring 46 to move a fixed displacement. This achieves automatic synchronization between the rope winding and unwinding actions. The moving speed of the guide ring 46 matches the winding speed of the drum 43, ensuring that each turn of wire rope is precisely and tightly arranged in its proper position, preventing rope tangling.

[0037] In practice, the trolley 3 moves on the double parallel guide rails 2 and is positioned above the target cargo. When the worker hangs the hoisting rope 5 on the cargo, the pressure sensor in each slider 42 monitors the force on each hoisting rope 5 in real time. The control system reads data from all pressure sensors. If the data is uneven, it indicates that the center of gravity of the cargo is off or the shape is irregular, causing uneven force on the lifting rope 5. At this time, the control system commands the corresponding telescopic cylinder 45 to move, push the slider 42, thereby adjusting the height of each pulley 44 to form a lifting network that fits the shape of the cargo, and automatically pulls the center of gravity of the cargo back to directly below the center of the lifting platform 4, ensuring the stability of the foundation from the beginning of the loading. The drive motor 6 on the trolley 3 starts, driving the central shaft 31 and the central gear 32 to rotate. The central gear 32 simultaneously drives all the circumferentially distributed winding gears 33, thereby driving all the drums 43 to rotate at the same angular velocity. All the lifting ropes 5 are wound up synchronously, and the lifting platform 4 and the goods are lifted vertically smoothly and without tilting. As the winding gear 33 rotates, the guide gear 34 meshing with it is driven to rotate, thereby driving the lead screw 47 to rotate. The rotation of the lead screw 47 is converted into the vertical movement of the guide ring 46. Since the hoisting rope 5 passes through the through hole 461 on the side wall of the guide ring 46, the moving speed of the guide ring 46 and the winding speed of the drum 43 are precisely locked by the gear transmission ratio, ensuring that each newly wound hoisting rope is tightly and neatly arranged next to the previous one, automatically realizing rope arrangement and preventing rope tangling and skipping. When the trolley 3 moves with the cargo, inertia or wind may cause the cargo to sway. The pressure sensor array can capture the force changes caused by this sway, and the control system responds quickly, coordinating the telescopic cylinder 45 to make fine adjustments. By changing the height of the attachment point of the hoisting rope 5 in real time, a damping force opposite to the sway direction is generated to actively and quickly suppress the sway.

[0038] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A highly stable intelligent double-girder crane, comprising a support frame (1), characterized in that, Two parallel guide rails (2) are fixed on the bracket (1), and a trolley (3) is slidably arranged between the two guide rails (2). A lifting platform (4) is arranged under the trolley (3), and multiple lifting ropes (5) are distributed around the circumference of the lifting platform (4). A drive motor (6) is arranged on the trolley (3).

2. The highly stable intelligent double-girder crane according to claim 1, characterized in that, The platform (4) has multiple rotatable drums (43) distributed around its circumference, and each of the hoisting ropes (5) is wound into the corresponding drum (43).

3. The highly stable intelligent double-girder crane according to claim 1, characterized in that, Multiple slide rails (41) are distributed around the edge of the platform (4), and a slider (42) is slidably arranged in each slide rail (41), and a pulley (44) is slidably arranged in each slider (42).

4. The highly stable intelligent double-girder crane according to claim 3, characterized in that, Telescopic cylinders (45) are provided between the slider (42) and the lifting platform (4).

5. A highly stable intelligent double-girder crane according to claim 3, characterized in that, Each of the sliders (42) is provided with a pressure sensor.

6. A highly stable intelligent double-girder crane according to claim 2, characterized in that, The outer periphery of the drum (43) is fitted with guide rings (46), and each guide ring (46) has a through hole (461) on its side wall.

7. A highly stable intelligent double-girder crane according to claim 6, characterized in that, The guide ring (46) has multiple threaded screws (47) running through it, and the upper and lower ends of each screw (47) are respectively rotatably set in the trolley (3) and the lifting platform (4).

8. A highly stable intelligent double-girder crane according to claim 7, characterized in that, The center of the platform (4) is provided with a central shaft (31) for rotation. The upper end of the central shaft (31) is connected to the drive motor (6), and the lower end extends through to the bottom of the platform (4) and is fixedly fitted with a central gear (32). The lower end of each of the aforementioned drums (43) also extends to the bottom of the platform (4) and is fixed with a winding gear (33), and each winding gear (33) meshes with the central gear (32).

9. A highly stable intelligent double-girder crane according to claim 8, characterized in that, The lower end of each of the lead screws (47) extends through to the bottom of the platform (4) and is fixed with a guide gear (34), which meshes with one of the winding gears (33).

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