Anti-swing device for gantry crane

Abstract

The utility model relates to portal crane technical field especially a portal crane anti -sway device, including portal crane body, mounting panel and general connection module, and the mounting panel is through high -strength rope and portal crane body upper movable winding unit flexible connection still includes: two elevating rings, and the winding equipment is independently installed to both sides left and right two ends of portal crane body front and back, two limit screw rods, and the limit screw rod outside has the driving block through the screw engagement drive, and the driving block is with the mounting panel upside through bolt detachable connection, and the follow -up adjusting unit. Through setting mounting panel, elevating ring, winding equipment, limit screw rod, driving block, follow -up adjusting unit, in the moving process of mounting panel and portal crane body upper movable winding unit, has realized to the limit of all -round of the sling front and back left and right and can keep the perpendicular state, has reduced the probability that the sling occurred swing, has promoted the stability of device.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and in particular to an anti-sway device for gantry cranes. Background Technology

[0002] Gantry cranes (also known as portal cranes) are an important variation of bridge cranes. Their metal structure resembles a portal frame, with two outriggers mounted under the main beam, allowing them to travel directly on ground-level tracks. Extendable cantilever arms can be installed at both ends of the main beam to expand the working range. This equipment features high site utilization, a large working range, wide adaptability, and strong versatility, making it one of the core lifting devices in outdoor freight yards, ports, shipyards, and other similar settings.

[0003] In the prior art, according to Chinese patent application number 202420379056.1, an anti-sway device for a gantry crane is disclosed, which includes end beams, crossbeams, outriggers, and a mounting base suspended below the crossbeams. The device is characterized in that: a rotating shaft is rotatably connected to the bottom end of the mounting base, the rotating shaft passes through the mounting base, a rotating sleeve is connected to the outer ring of the rotating shaft, the rotating sleeve is fitted over the mounting base, the two ends of the rotating sleeve correspond to the end beams on both sides, and steel wire ropes are connected to both ends of the rotating sleeve. Fixed pulleys are provided on the bottom surface of the end beams at both ends. A turntable is rotatably mounted on the outriggers near the fixed pulleys, the steel wire ropes are wound onto the turntables through the fixed pulleys, and a motor for driving the turntables is installed at the outriggers. This invention effectively prevents swaying.

[0004] In the prior art, according to Chinese patent application number 202420379056.1, an anti-sway device for a gantry crane is disclosed. This device uses ropes installed separately on the left and right sides of the mounting base to assist in positioning, thereby preventing swaying. However, limiting the positioning only from the left and right sides allows the mounting base to still sway in the front-to-back direction. Furthermore, when using ropes for positioning, if the ropes at both ends move differently during horizontal movement, the rope connected to the upper end of the mounting base may not be vertical, thus affecting the anti-sway effect and reducing the overall stability and reliability of the device. Therefore, we propose an anti-sway device for a gantry crane to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies. For example, Chinese Patent Application No. 202420379056.1 discloses an anti-sway device for a gantry crane, which uses ropes installed separately on the left and right sides of the mounting base to assist in positioning and prevent swaying. However, limiting the positioning only from the left and right sides allows the mounting base to still sway in the front-to-back direction. Furthermore, when using ropes for positioning, if the ropes at both ends move differently during horizontal movement, the rope connected to the upper end of the mounting base cannot be in a vertical state, thus affecting the anti-sway effect and reducing the overall stability and reliability of the device. Therefore, this utility model proposes an anti-sway device for gantry cranes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a gantry crane anti-sway device, including a gantry crane body, a mounting plate, and a universal connection module. The mounting plate is located inside the gantry crane body and is flexibly connected to a mobile winding unit above the gantry crane body via high-strength ropes. The universal connection module is installed on the bottom surface of the mounting plate. The device also includes:

[0008] Two lifting rings are slidable on the outer sides of the left and right ends of the gantry crane body. The front and rear sides and left and right ends of the gantry crane body are each independently equipped with a winding device, and the winding device is connected to the power supply and controller through wires. The lifting rings are flexibly connected to the winding device through high-strength ropes.

[0009] Two limiting screws are located at the front and rear ends of the upper side of the mounting plate. A driving block is driven on the outer side of the limiting screws through thread engagement. The driving block is detachably connected to the upper side of the mounting plate by bolts.

[0010] The follow-up adjustment unit is located between the two lifting rings and the two limiting screws. The follow-up adjustment unit supports the limiting screws and adjusts the limiting screws as the mounting plate moves, ensuring that the limiting screws are always coordinated with the movement trajectory of the mounting plate and maintaining effective constraint on the back-and-forth swing of the lifting device.

[0011] Preferably, the follow-up adjustment unit includes a motor and two sets of turbines and worm gears. Two A support blocks are fixedly connected to the upper side of the lifting ring. Guide sliding holes are provided on both the left and right sides of the gantry crane body. The A support blocks can slide inside the guide sliding holes. A rotating hole is provided on one side of the A support blocks. The limiting screw can rotate inside the rotating hole. The turbine is installed on the left end of the limiting screw. The worm gear is arranged vertically and the turbine and worm gear are meshed and connected. An A positioning block is provided on the lower side of the worm gear and a B positioning block is provided on the upper side of the worm gear. The B positioning block and the upper side of the lifting ring are detachably connected by bolts to the B support block. The A positioning block is fixedly connected to the outer side of the lifting ring. A linkage part is provided between the two worm gears and the motor. The motor is installed on the upper side of the gantry crane body and is connected to the power supply and controller through wires.

[0012] By adopting the above structure, the follow-up adjustment unit allows the limit screw to be adjusted as the mounting plate moves, so that the limit screw can better limit the mounting plate and thus better prevent the mounting plate and the lifting device from swaying.

[0013] Preferably, the linkage includes two rotating rods, with an A positioning plate and a B positioning plate rotatably mounted on the upper ends of the two rotating rods. The A positioning plate and the B positioning plate are fixedly connected to the gantry crane body. The worm gear has an A sliding hole on its upper side, and the A positioning block and the B positioning block have through holes on their upper sides. The rotating rods can slide inside the A sliding hole and the through holes. The outer side of the rotating rods has four sliding grooves, and a positioning strip slides inside the sliding grooves. The positioning strip is fixedly connected to the inner side of the A sliding hole. The upper side of the A positioning plate has two drive wheels and a linkage wheel. The linkage wheel and the drive wheels are connected by tooth meshing and are rotatably connected to the upper side of the A positioning plate. The drive wheel is mounted on the upper end of the rotating rod, and the motor shaft is connected to the linkage wheel by bevel gear meshing.

[0014] By adopting the above structure, the linkage unit allows the two limit screws to rotate synchronously, making the device operate more stably.

[0015] Preferably, the worm gear is provided with positioning grooves on both the upper and lower sides, and a positioning ring is rotatably provided inside the positioning groove. The positioning ring is fixedly connected to positioning block A and positioning block B.

[0016] By adopting the above structure, the positioning ring plays a positioning role for the worm, making the rotation of the worm more stable.

[0017] Preferably, the A support block is detachably connected to the inner side of the lifting ring with an auxiliary plate, and the auxiliary plate can slide inside the guide hole.

[0018] By adopting the above structure, the auxiliary plate plays a guiding and supporting role for support block A, making the movement of support block A more stable.

[0019] Preferably, the gantry crane body is provided with four guide grooves on both the front and rear sides, and two guide blocks are fixedly connected to the front and rear ends of the inner side of the lifting ring, and the guide blocks can slide inside the guide grooves.

[0020] By adopting the above structure, the guide block plays a guiding and limiting role for the lifting ring, making the movement of the lifting ring more stable.

[0021] The anti-sway device for gantry cranes proposed in this utility model has the following advantages:

[0022] 1. By setting up an installation plate, lifting ring, winding equipment, limit screw, driving block, and follow-up adjustment unit, the lifting device is limited in multiple directions (front, back, left, and right). It also ensures that the installation plate and the mobile winding unit above the gantry crane body remain vertical during movement, greatly reducing the probability of the lifting device swaying and improving the stability of the lifting device during crane operation.

[0023] 2. By setting up a linkage mechanism, a power transmission chain of "motor rotation → linkage wheel rotation → drive wheel rotation → rotating rod rotation" is realized. At the same time, the power transmission direction is adjusted by bevel gear meshing, making the structural layout more compact, the power transmission more stable, and the device operation more stable. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the front side of an anti-sway device for a gantry crane proposed in this utility model.

[0025] Figure 2 The present utility model proposes Figure 1 A magnified three-dimensional structural diagram of a portion of area A in the middle;

[0026] Figure 3 The present utility model proposes Figure 1 A magnified three-dimensional structural diagram of a portion of area B in the middle section;

[0027] Figure 4 The present utility model proposes Figure 1 A magnified three-dimensional structural diagram of a portion of the central C area;

[0028] Figure 5 This is a three-dimensional structural diagram of the lower side of an anti-sway device for a gantry crane proposed in this utility model.

[0029] Figure 6 The present utility model proposes Figure 5 A magnified three-dimensional structural diagram of a portion of the central D region;

[0030] Figure 7 This is a three-dimensional cross-sectional view of the right side of the anti-sway device for a gantry crane proposed in this utility model;

[0031] Figure 8 The present utility model proposes Figure 7 A magnified three-dimensional structural diagram of a portion of the central E region;

[0032] Figure 9 The present utility model proposes Figure 8 A magnified three-dimensional structural diagram of a portion of the central F region.

[0033] In the diagram: 1. Gantry crane body; 2. Mounting plate; 3. Universal connection module; 4. Lifting ring; 5. Winding device; 6. Limit screw; 7. Drive block; 8. Follow-up adjustment unit; 81. Turbine; 82. Worm gear; 83. A support block; 84. A positioning block; 85. B positioning block; 86. B support block; 87. Linkage part; 871. Rotating rod; 872. A positioning plate; 873. B positioning plate; 874. Positioning strip; 875. Drive wheel; 876. Linkage wheel; 88. Positioning ring; 89. Auxiliary plate; 810. Motor; 9. Guide block. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Reference Figure 1-9 An anti-sway device for a gantry crane includes a gantry crane body 1, a mounting plate 2, and a universal connection module 3. The mounting plate 2 is located inside the gantry crane body 1 and is flexibly connected to a mobile winding unit above the gantry crane body 1 via high-strength ropes. The two ends of the ropes are respectively fixed to the programmable drum device of the winding machine and the standardized lifting point interface of the mounting plate 2, forming a vertical load transmission path to support precise lifting and positioning of the load. The universal connection module 3 is installed on the bottom surface of the mounting plate 2 and can be quickly switched to be configured with hooks or chains installed under the universal connection module 3 according to actual operation needs, improving the applicability of the device. It also includes: two lifting rings 4, two limit screws 6, and a follow-up adjustment unit 8.

[0036] The lifting ring 4 can slide on the outer sides of the left and right ends of the gantry crane body 1. The front and rear sides of the gantry crane body 1 are provided with four guide grooves. The front and rear ends of the inner side of the lifting ring 4 are fixedly connected with two guide blocks 9. The guide blocks 9 can slide on the inner side of the guide groove, so that the lifting ring 4 can rise and fall smoothly and vertically along the trajectory defined by the guide groove.

[0037] Two limiting screws 6 are located at the front and rear ends of the upper side of the mounting plate 2. The outer side of the limiting screws 6 is driven by a drive block 7 through thread engagement. The drive block 7 is detachably connected to the upper side of the mounting plate 2 by bolts. The limiting screws 6 limit the mounting plate 2 in the front and rear direction through the drive block 7, and limit the mounting plate 2 in the left and right direction under the action of the thread. This realizes multi-directional limiting of the mounting plate 2 and the hook or chain, thereby reducing the probability of the hook or chain swaying and making the device operate more stably.

[0038] The follow-up adjustment unit 8 is located between the two lifting rings 4 and the two limit screws 6. The follow-up adjustment unit 8 supports the limit screws 6 and adjusts the limit screws 6 as the mounting plate 2 moves, ensuring that the limit screws 6 always keep in coordination with the movement trajectory of the mounting plate 2 and maintain effective constraint on the swing of the lifting device in the front and back directions.

[0039] The follow-up adjustment unit 8 includes a motor 810, two sets of turbines 81 and worm gears 82. Two A support blocks 83 are fixedly connected to the upper side of the lifting ring 4. Guide sliding holes are provided on both the left and right sides of the gantry crane body 1. The A support blocks 83 can slide inside the guide sliding holes. An auxiliary plate 89 is detachably connected to the inner side of the lifting ring 4. The A support blocks 83 and the auxiliary plate 89 play a guiding and supporting role for the vertical movement of the lifting ring 4, ensuring the stability of the lifting ring 4 during movement. At the same time, they provide additional lateral support stability for the overall structure. The auxiliary plate 89 plays a supporting role inside the lifting ring 4 and provides auxiliary connection to the lower side of the A support blocks 83, making the shape of the lifting ring 4 more stable and the connection between the A support blocks 83 and the lifting ring 4 more stable.

[0040] The turbine 81 is installed at the left end of the limiting screw 6. The worm gear 82 is arranged vertically and is meshed with the turbine 81 and the worm gear 82 for transmission. A support block 83 has a rotating hole on one side, and the limiting screw 6 can rotate inside the rotating hole. A positioning block 84 is provided on the lower side of the worm gear 82, and a positioning block 85 is provided on the upper side of the worm gear 82. Positioning grooves are provided on both the upper and lower sides of the worm gear 82. A positioning ring 88 rotates inside the positioning groove. The positioning ring 88 is fixedly connected to the positioning block 84 and the positioning block 85 to ensure that the worm gear 82 maintains a stable axial position during transmission. The positioning block 85 is detachably connected to the upper side of the lifting ring 4 via bolts. 6. This design allows the limiting screw 6 to rotate with the worm gear 82 driven by the worm 81. The function of positioning block A 84 and positioning block B 85 is to support the worm gear 82 and ensure the meshing accuracy between the worm gear 82 and the worm 81. Together with support block A 83, it can also limit the vertical movement of the limiting screw 6 and ensure that the limiting screw 6 always rotates stably along the axial direction, providing a reliable limiting reference for the swing constraint of the lifting device. Positioning block A 84 is fixedly connected to the outside of the lifting ring 4. There is a linkage part 87 between the two worm gears 82 and the motor 810. The motor 810 is installed on the upper side of the gantry crane body 1 and is connected to the power supply and controller through wires.

[0041] The motor 810 drives two worm gears 82 to rotate together via the linkage 87. The worm gears 82 drive the limit screw 6 to rotate synchronously on the support block 83 via the turbine 81. Under the action of the thread, the two driving blocks 7 move synchronously in the same direction on the limit screw 6. The driving blocks 7 will move together with the mounting plate 2. The moving speed of the mounting plate 2 is adjusted according to the moving speed of the mobile winding unit above the gantry crane body 1, so that the mobile winding unit and the mounting plate 2 move synchronously. This allows the mobile winding unit and the mounting plate 2 to maintain their relative positions when moving horizontally, keeping the rope connecting the mobile winding unit and the mounting plate 2 in a vertical state, and making the movement of the hook or chain more stable.

[0042] The linkage 87 includes two rotating rods 871, which are arranged in parallel. An A positioning plate 872 and a B positioning plate 873 are rotatably mounted on the upper ends of the two rotating rods 871. The A positioning plate 872 and the B positioning plate 873 are fixedly connected to the gantry crane body 1. The A positioning plate 872 and the B positioning plate 873 support the rotating rods 871, making the rotation of the rotating rods 871 more stable.

[0043] The worm 82 has a sliding hole A on its upper side, and through holes on the upper sides of positioning blocks A 84 and B 85. The rotating rod 871 can slide inside the sliding hole A and the through holes. The outer side of the rotating rod 871 has four sliding grooves, and positioning strips 874 slide inside the sliding grooves. The positioning strips 874 are fixedly connected to the inner side of the sliding hole A. The positioning strips 874 provide axial sliding guidance for the worm 82 and restrict its circumferential rotation, ensuring that the worm 82 rotates with the rotating rod 871 while moving along the rotating rod 871, thus ensuring the accuracy of the meshing between the worm 82 and the turbine 81.

[0044] The upper side of the positioning plate 872 is provided with two drive wheels 875 and a linkage wheel 876. The linkage wheel 876 is connected to the drive wheel 875 through tooth meshing and the linkage wheel 876 is rotatably connected to the upper side of the positioning plate 872. The drive wheel 875 is installed on the upper end of the rotating rod 871. The shaft end of the motor 810 is connected to the linkage wheel 876 through bevel gear meshing. This design realizes the power transmission chain of "motor 810 rotation → linkage wheel 876 rotation → drive wheel 875 rotation → rotating rod 871 rotation". At the same time, the power transmission direction is adjusted by bevel gear meshing, making the structural layout more compact and the power transmission more stable.

[0045] The gantry crane body 1 is equipped with independently installed winding devices 5 on both the front and rear sides and the left and right ends. The winding devices 5 are connected to the power supply and controller via wires. The lifting ring 4 is flexibly connected to the winding devices 5 via high-strength ropes, and the two ends of the ropes are respectively fixed to the programmable drum device of the winding device 5 and the standardized lifting point interface of the lifting ring 4. This distributed layout, through the coordinated control of four-way winding force, forms a load transmission path in the vertical direction while achieving precise positioning and sway suppression of the lifting ring 4 in the vertical direction. Furthermore, through the synchronous / differential winding and unwinding of the four sets of ropes, the vertical lifting and unwinding action of the lifting ring 4 can be completed. The winding devices 5 and the mobile winding unit above the gantry crane body 1 are wound and unwound synchronously, allowing the lifting ring 4 and the mounting plate 2 to move up and down synchronously, ensuring the relative position of the mounting plate 2 and the limit screw 6, making the operation of the device more stable.

[0046] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 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, and therefore should not be construed as a limitation on this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this patent can be understood according to the specific circumstances.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gantry crane anti-sway device, comprising a gantry crane body (1), a mounting plate (2), and a universal connection module (3), wherein the mounting plate (2) is located inside the gantry crane body (1) and is flexibly connected to a mobile winding unit above the gantry crane body (1) via high-strength ropes, and the universal connection module (3) is installed on the bottom surface of the mounting plate (2), characterized in that, Also includes: Two lifting rings (4) are slidable on the left and right sides of the gantry crane body (1). The front and rear sides and left and right sides of the gantry crane body (1) are each independently equipped with a winding device (5), and the winding device (5) is connected to the power supply and controller through a wire. The lifting ring (4) is flexibly connected to the winding device (5) through a high-strength rope. Two limiting screws (6) are located at the front and rear ends of the upper side of the mounting plate (2). The outer side of the limiting screws (6) is driven by a drive block (7) through thread engagement. The drive block (7) is detachably connected to the upper side of the mounting plate (2) by bolts. The follow-up adjustment unit (8) is located between the two lifting rings (4) and the two limiting screws (6). The follow-up adjustment unit (8) supports the limiting screws (6) and adjusts the limiting screws (6) as the mounting plate (2) moves, ensuring that the limiting screws (6) are always coordinated with the movement trajectory of the mounting plate (2) and maintaining effective constraint on the swing of the lifting device in the front and back directions.

2. The anti-sway device for a gantry crane according to claim 1, characterized in that, The follow-up adjustment unit (8) includes a motor (810) and two sets of turbines (81) and worm gears (82). Two A support blocks (83) are fixedly connected to the upper side of the lifting ring (4). Guide sliding holes are provided on both the left and right sides of the gantry crane body (1). The A support blocks (83) can slide inside the guide sliding holes. A rotating hole is provided on one side of the A support blocks (83). The limiting screw (6) can rotate inside the rotating hole. The turbine (81) is installed on the left end of the limiting screw (6). The worm gear (82) is arranged vertically and the turbine (81) and worm gear (82) are connected together. The worm (82) is meshed and connected to the motor (810). The worm (82) is provided with an A positioning block (84) on its lower side and a B positioning block (85) on its upper side. The B positioning block (85) and the upper side of the lifting ring (4) are connected by bolts to a B support block (86). The A positioning block (84) is fixedly connected to the outer side of the lifting ring (4). The two worms (82) are connected to the motor (810) with a linkage part (87). The motor (810) is installed on the upper side of the gantry crane body (1). The motor (810) is connected to the power supply and controller through wires.

3. The anti-sway device for a gantry crane according to claim 2, characterized in that, The linkage (87) includes two rotating rods (871). An A positioning plate (872) and a B positioning plate (873) are rotatably mounted on the upper ends of the two rotating rods (871). The A positioning plate (872) and B positioning plate (873) are fixedly connected to the gantry crane body (1). An A sliding hole is provided on the upper side of the worm gear (82). Through holes are provided on the upper sides of the A positioning block (84) and B positioning block (85). The rotating rods (871) can slide within the A sliding hole and the through holes. Four… A sliding groove, with a positioning strip (874) sliding inside the sliding groove. The positioning strip (874) is fixedly connected to the inside of the sliding hole A. The upper side of the positioning plate A (872) is provided with two drive wheels (875) and a linkage wheel (876). The linkage wheel (876) and the drive wheel (875) are connected by tooth meshing and the linkage wheel (876) is rotatably connected to the upper side of the positioning plate A (872). The drive wheel (875) is installed on the upper end of the rotating rod (871). The shaft end of the motor (810) is connected to the linkage wheel (876) by bevel gear meshing.

4. The anti-sway device for a gantry crane according to claim 2, characterized in that, The worm (82) is provided with positioning grooves on both the upper and lower sides. A positioning ring (88) is rotatably mounted inside the positioning groove. The positioning ring (88) is fixedly connected to positioning block A (84) and positioning block B (85).

5. The anti-sway device for a gantry crane according to claim 2, characterized in that, The A support block (83) is detachably connected to the inner side of the lifting ring (4) with an auxiliary plate (89), which can slide inside the guide hole.

6. The anti-sway device for a gantry crane according to claim 1, characterized in that, The gantry crane body (1) has four guide grooves on both the front and rear sides. The lifting ring (4) has two guide blocks (9) fixedly connected to both the front and rear ends on the inner side. The guide blocks (9) can slide inside the guide grooves.

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