Anti-swing gantry crane

Abstract

The present application relates to the technical field of crane, especially to a swing-preventing gantry crane, which comprises a frame and the like; a travelling trolley is arranged at the bottom of the frame, a travelling groove is formed at the top of the frame, a travelling trolley is arranged in the travelling groove of the frame, a driving device is arranged on the travelling trolley, a pulley block is arranged on the driving device, a lifting appliance is arranged at the bottom of the pulley block, a pulley limiting mechanism corresponding to the pulley block is arranged on the lifting appliance, the pulley limiting mechanisms on both sides are symmetrically arranged, the pulley limiting mechanism is used for limiting and controlling the pulley block to prevent the swing of the pulley block. The pulley limiting mechanism can provide a larger rotating force for the second gear of the second anemograph, and then the brake unit brakes the pulley block, so that the pulley block no longer rotates, the swing of the pulley block under the driving of the driving device is prevented, and the situation of the swing of the pulley block is avoided. Multiple pulley blocks are simultaneously braked, which can effectively reduce the situation of the swing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, in particular to a swing-preventing gantry crane. BACKGROUND

[0002] The gantry crane is a deformation of the bridge crane, mainly used for loading and unloading operations of bulk cargo in outdoor cargo yards. Its metal structure is like a door-shaped frame, two support legs are installed below the load-bearing main beam, and it can directly walk on the track on the ground. The main beam can have an outer cantilever beam at both ends. The gantry crane has the characteristics of high site utilization, large operation range, wide adaptability, and strong versatility, and is widely used in port yards.

[0003] The Chinese patent with the publication number CN216638715U in the prior art discloses a gantry crane with a swing-preventing function, comprising two main beams, end beams are arranged at both ends of the main beams, support legs are arranged at the bottom of the end beams, a trolley running mechanism is arranged on the main beam, the trolley running mechanism comprises a walking trolley, three winding drums are arranged on the walking trolley, the winding drums are driven by a driving motor, the three winding drums are arranged in an H shape, the middle winding drum is a first winding drum, and the winding drums on both sides are second winding drums; a lifting appliance is arranged below the walking trolley, three movable pulley blocks are arranged at the top of the lifting appliance, the three movable pulley blocks correspond to the three winding drums, the middle movable pulley block is a first movable pulley block, and the movable pulley blocks on both sides are second movable pulley blocks; a fixed pulley block is arranged above each movable pulley block, and the steel wire rope on the winding drum passes through the corresponding movable pulley block and fixed pulley block; the present application is used to solve the problem that the gantry crane in the prior art easily shakes when lifting heavy objects.

[0004] Although the above-mentioned patent can solve the problem that some gantry cranes easily shake when lifting heavy objects by arranging multiple steel wires and movable pulley blocks at a certain angle with each other, thereby having a certain anti-swing ability, but since the gantry crane is mostly used outdoors, it is greatly affected by external environmental factors. When there is wind, especially when the wind is strong, the problem of shaking when lifting heavy objects cannot be effectively controlled by only using steel wires and movable pulley blocks. SUMMARY

[0005] In order to overcome the shortcomings in the background art, the present application provides a swing-preventing gantry crane.

[0006] The technical solution is as follows: An anti-sway gantry crane includes a frame, a traveling trolley, and a traveling carriage. The traveling trolley is located at the bottom of the frame, and a traveling groove is provided at the top of the frame. The traveling carriage is located within the traveling groove of the frame. A drive device is installed on the traveling carriage, and a pulley block is installed on the drive device. A lifting device is installed at the bottom of the pulley block, and a pulley limiting mechanism corresponding to each pulley block is installed on the lifting device. The pulley limiting mechanisms on both sides are symmetrically arranged. The pulley limiting mechanisms are used to limit and control the pulley block to prevent it from swaying. An anti-sway mechanism is installed on the frame to guide the movement of the lifting device and prevent it from swaying. The drive device is used to drive the pulley block and the lifting device to move up and down, thereby realizing the lifting and unloading of heavy objects.

[0007] Optionally, the pulley limiting mechanism includes multiple second anemometers that are rotatably connected to the lifting device. Each second anemometer corresponds to a pulley block. A second gear is provided on the second anemometer. A slide rod is movably connected inside the rotating shaft of the pulley block. A second rack is provided at one end of the slide rod, and the second rack meshes with the second gear. A braking unit is provided at the other end of the slide rod. The braking unit is used to brake the pulley block to prevent the pulley block from rotating, thereby causing the lifting device and the load to swing.

[0008] Optionally, the braking unit includes multiple wedge blocks 1 disposed on the slide rod, a compression spring disposed between the slide rod and the shaft of the pulley assembly, multiple wedge blocks 2 movably connected inside the shaft of the pulley assembly, and a tension spring disposed between the wedge blocks 2 and the shaft of the pulley assembly.

[0009] Optionally, the lifting device is connected to multiple support rods, and the top of the support rods is provided with limit blocks, which correspond one-to-one with the second rack and are slidably connected.

[0010] Optionally, the anti-sway mechanism includes a slider, with grooves on both sides of the frame, a slider slidably connected in the grooves, a groove in the slider, a first sprocket movably connected in the groove of the slider, chains on the first sprockets on both sides, and two through holes in the lifting device, through which the chains pass.

[0011] Optionally, the anti-sway mechanism also includes a threaded rod movably connected to the lifting device, the upper end of the threaded rod being rotatably connected to the limit block, a third gear being provided on the threaded rod, the third gear meshing with the second gear, a sliding block being threadedly connected to the threaded rod, the sliding block being movably connected to the support rod, and a vertical rod being provided at the bottom of the sliding block, the vertical rod being movably connected to the lifting device.

[0012] Optionally, a spike is provided at the bottom of the pole, with the spike positioned above the chain.

[0013] Optionally, the lifting device has a circular groove, and a second sprocket is movably connected in the circular groove. The second sprocket is engaged with the chain.

[0014] Optionally, the frame is provided with a trolley limiting mechanism for limiting and fixing the traveling trolley. The trolley limiting mechanism includes a first anemometer. Supports are provided on both sides of the traveling trolley. The first anemometer is movably connected in the support. The first anemometer is provided with a first gear. First racks are symmetrically arranged on both sides in the support. A control unit is provided in the first gear. The control unit is used to realize the linkage between the first anemometer and the first gear.

[0015] Optionally, the control unit includes a ratchet, the ratchet is symmetrically arranged inside the first anemometer, a torsion spring is arranged between the ratchet and the first anemometer, and a number of ratchet grooves are opened inside the first gear, which cooperate with the ratchet.

[0016] The beneficial effects are as follows: 1. The present invention enables the second anemometer to provide a large rotational force to the second gear through the pulley limiting mechanism. The second gear drives the second rack and slide bar to move towards the pulley group to overcome the resistance of the braking unit. Then the braking unit brakes the pulley group, and the pulley group stops rotating. This can prevent the pulley group from rotating under the drive of the driving device, which would cause the pulley group to sway. The simultaneous braking of multiple pulley groups can effectively reduce the swaying.

[0017] 2. The present invention uses an anti-sway mechanism to guide the movement of the lifting device when it moves left and right, preventing the lifting device from swaying. When the lifting device moves up and down, the lifting device drives the chain to move, which in turn drives the first sprocket and the slider to move up and down. The slide groove guides the up and down movement of the slider to prevent the lifting device from swaying.

[0018] 3. The present invention enables the control unit to swing via the first anemometer through the trolley limiting mechanism. The control unit will be linked with the first gear, thereby enabling the first anemometer to drive the first gear to rotate, which in turn drives the first rack to move. When the first rack is pressed against the traveling groove of the frame, the position of the traveling trolley can be controlled to prevent the traveling trolley from moving under the action of wind. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the driving device of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the slider of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the pulley limiting mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the first cross-sectional structure of the pulley system of the present invention;

[0024] Figure 6 This is a schematic diagram of a second cross-sectional structure of the pulley system of the present invention;

[0025] Figure 7 This is a three-dimensional structural schematic diagram of the second sprocket of the present invention;

[0026] Figure 8 This is a three-dimensional structural schematic diagram of the trolley limiting mechanism of the present invention;

[0027] Figure 9 This is a schematic diagram of the first cross-sectional structure of the control unit of the present invention;

[0028] Figure 10 This is a schematic diagram of a second cross-sectional structure of the control unit of the present invention;

[0029] Figure 11 for Figure 7 A magnified structural diagram of point A in the middle.

[0030] In the diagram: 1-Frame, 101-Traveling track, 2-Traveling trolley, 3-Traveling carriage, 4-Drive equipment, 5-Pulley block, 6-Lifting device, 7-First anemometer, 8-Bracket, 9-First gear, 10-First rack, 11-Ratchet, 12-Ratchet, 13-Second anemometer, 14-Second gear, 15-Second rack, 16-Slide rod, 17-Wedge block one, 18-Wedge block two, 19-Compression spring, 20-Tension spring, 21-Support rod, 22-Limiting block, 23-Slider, 24-Slide groove, 25-First sprocket, 26-Chain, 27-Second sprocket, 28-Third gear, 29-Threaded rod, 30-Sliding block, 31-Upright rod, 32-Conical spike. Detailed Implementation

[0031] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] An anti-sway gantry crane, such as Figures 1-11As shown, the system includes a frame 1, with a traveling trolley 2 fixedly connected to the bottom of the frame 1. A traveling groove 101 is provided on the top of the frame 1, and a traveling trolley 3 is slidably connected within the traveling groove 101. Multiple drive devices 4 (the drive devices 4 are existing technology, including a dual-axis motor, a drum, and a lifting rope) are fixedly connected to the traveling trolley 3. Each drive device 4 is equipped with a pulley block 5, and a lifting device 6 is fixedly connected to the bottom of all pulley blocks 5. The lifting device 6 is equipped with pulley limiting mechanisms corresponding to each pulley block 5, with symmetrical pulley limiting mechanisms on both sides. These mechanisms limit the pulley blocks 5 to prevent them from swaying. An anti-sway mechanism is provided on the frame 1 to guide the movement of the lifting device 6 and prevent it from swaying. The drive devices 4 drive the pulley blocks 5 and the lifting device 6 to move up and down, thus lifting heavy objects. Loading and unloading: During use, the operator controls the traveling trolley 2 to move, driving the frame 1 to move, and simultaneously controls the traveling carriage 3 to drive the drive equipment 4 and the lifting device 6 to move. When it reaches the predetermined position, the operator controls the traveling trolley 2 to stop moving and controls the drive equipment 4 to lower the lifting device 6 to the appropriate position, then connects the lifting device 6 to the heavy object, and then controls the lifting device 6 to rise and move to the placement position. The anti-sway mechanism can provide guidance for the movement of the lifting device 6, reducing the adverse effects of the external environment on the lifting device 6. When the wind force reaches a certain level, the pulley limit mechanism will activate to fix the pulley block 5, preventing the pulley block 5 from swaying under the action of the wind. At the same time, the anti-sway mechanism will lock the position of the lifting device 6 to further prevent the lifting device 6 from swaying, reduce the probability of the heavy object falling due to the swaying of the lifting device 6, and improve the safety of lifting.

[0034] The pulley limiting mechanism includes multiple second anemometers 13 rotatably connected to the lifting device 6. Each second anemometer 13 corresponds to a pulley block 5. A second gear 14 is fixedly connected to each second anemometer 13. A slide rod 16 is slidably connected inside the rotating shaft of the pulley block 5. A second rack 15 is fixedly connected to one end of the slide rod 16, and the second rack 15 meshes with the second gear 14. A braking unit is provided at the other end of the slide rod 16. The braking unit is used to brake the pulley block 5 to prevent the pulley block 5 from rotating, thereby causing the lifting device 6 and the load to swing. In use, since the second gear 14 on the second anemometer 13 meshes with the second rack 15, and the second rack 15 is connected to the braking unit through the slide rod 16, the rotation of the second gear 14 needs to overcome the resistance brought by the second rack 15 and the braking unit. When the wind speed is low, the rotational force provided by the second anemometer 13 to the second gear 14 is small and cannot overcome the resistance of the braking unit. The second anemometer 13 will not drive the second gear 14 to rotate, the braking unit will not brake, and the pulley block 5 can rotate freely. When the wind speed reaches a certain level, the second anemometer 13 can provide a larger rotational force to the second gear 14. The second gear 14 drives the second rack 15 and slide bar 16 to move towards the pulley block 5 to overcome the resistance of the braking unit. Then the braking unit brakes the pulley block 5, and the pulley block 5 stops rotating. This can prevent the pulley block 5 from rotating under the drive of the drive device 4, which would cause the pulley block 5 to sway. The simultaneous braking of multiple pulley blocks 5 can effectively reduce the swaying.

[0035] The braking unit includes four wedge-shaped blocks 17 fixedly connected to the slide rod 16. A compression spring 19 is fixedly connected between the slide rod 16 and the shaft of the pulley group 5. Four wedge-shaped blocks 18 are slidably connected inside the shaft of the pulley group 5. A tension spring 20 is fixedly connected between the wedge-shaped blocks 18 and the shaft of the pulley group 5. Silicone can be applied to the side of the wedge-shaped blocks 18 that contacts the pulley group 5 to increase friction and improve braking effect. In use, the slide rod 16 needs to overcome the elastic force of the compression spring 19 to move the wedge-shaped blocks 17, and the wedge-shaped blocks 17 need to overcome the elastic force of the tension spring 20 to move the wedge-shaped blocks 18. The power for the slide rod 16 to move is provided by the second anemometer 13. Therefore, when the wind force is low, the force provided by the second anemometer 13 is less than the sum of the elastic forces of the compression spring 19 and the tension spring 20. The second gear 14 cannot rotate, the wedge-shaped blocks 18 cannot move, and the braking effect on the pulley group 5 cannot be achieved. Braking occurs when the wind is strong. The force provided by the second anemometer 13 is greater than the sum of the elastic forces of the compression spring 19 and the tension spring 20. The second anemometer 13 drives the second gear 14 to rotate, which in turn drives the second rack 15 and the slide bar 16 to move closer to the pulley group 5. The first wedge block 17 pushes the second wedge block 18 to move. The compression spring 19 is compressed and the tension spring 20 is stretched, which in turn presses the pulley group 5 against it, thus braking the pulley group 5. Since the second anemometers 13 on both sides are symmetrically arranged, regardless of the wind direction, when the wind speed reaches a certain level, one of the pulley groups 5 on both sides can be kept in a braking state, thus ensuring the overall stability of the lifting device 6. When the wind speed decreases, the second wedge block 18 is reset under the tension of the tension spring 20, and the slide bar 16 is reset under the elastic force of the compression spring 19, which in turn drives the second gear 14 and the second rack 15 to reset.

[0036] Multiple support rods 21 are fixedly connected to the lifting device 6. Limiting blocks 22 are fixedly connected to the top of the support rods 21. The limiting blocks 22 correspond one-to-one with the second rack 15 and are slidably connected. In use, the limiting blocks 22 can guide the movement of the second rack 15. At the same time, since the limiting blocks 22 are located outside the slide rod 16, the limiting blocks 22 can also limit and block the slide rod 16. The slide rod 16 can only move towards the pulley block 5 and cannot move away from the pulley block 5. This can also prevent the slide rod 16 from separating from the pulley block 5 when the wind direction reverses.

[0037] The anti-sway mechanism includes a slider 23. Slide grooves 24 are provided on both sides of the frame 1. The slider 23 is slidably connected within the slide grooves 24. A groove is provided within the slider 23, and a first sprocket 25 is rotatably connected within the groove of the slider 23. Chains 26 are driven onto the first sprockets 25 on both sides. Two through holes are provided inside the lifting device 6, through which the chain 26 passes. In use, when the lifting device 6 moves left and right, the chain 26 guides the movement of the lifting device 6, preventing it from swaying. When the lifting device 6 moves up and down, it drives the chain 26 to move, which in turn drives the first sprockets 25 and the slider 23 to move up and down. The slide grooves 24 guide the up and down movement of the slider 23, preventing the lifting device 6 from swaying.

[0038] The anti-sway mechanism also includes a threaded rod 29 rotatably connected to the middle of the lifting device 6. The upper end of the threaded rod 29 is rotatably connected to one of the limiting blocks 22 in the middle. A third gear 28 is fixedly connected to the threaded rod 29, and the third gear 28 meshes with the second gear 14. A sliding block 30 is threadedly connected to the threaded rod 29, and the sliding block 30 is slidably connected to the support rod 21. A vertical rod 31 is fixedly connected to the bottom of the sliding block 30, and the vertical rod 31 is slidably connected to the lifting device 6. The vertical rod 31 is located above the chain 26. In use... When the wind force reaches a certain level, the second anemometer 13 drives the second gear 14 to rotate. When the second rack 15 moves closer to the pulley block 5, the second gear 14 drives the third gear 28 to rotate. The third gear 28 drives the threaded rod 29 to rotate, thereby controlling the upright 31 to move downward. As the upright 31 moves, it will press the chain 26, thereby fixing the position of the lifting device 6 and the chain 26, preventing the lifting device 6 from moving and avoiding swaying of the lifting device 6.

[0039] A cone 32 is fixedly connected to the bottom of the upright 31, and the cone 32 is located above the chain 26. When in use, when the upright 31 moves downward, the upright 31 drives the cone 32 to move downward, and then the cone 32 will insert into the gap of the chain 26, making it difficult for the chain 26 to move, and the fixing and limiting effect will be better.

[0040] The lifting device 6 has a circular groove inside, and a second sprocket 27 is rotatably connected in the groove. The second sprocket 27 is engaged with the chain 26. When in use, the left and right movement of the lifting device 6 will drive the second sprocket 27 to rotate. The rotation of the second sprocket 27 can provide a certain power for the movement of the chain 26, making it easier to move the lifting device 6.

[0041] Example 2

[0042] like Figures 1-11As shown, based on Embodiment 1, the present invention provides a technical solution: a trolley limiting mechanism is provided on the frame 1 to limit and fix the traveling trolley 3. The trolley limiting mechanism includes a first anemometer 7. Supports 8 are fixedly connected to both sides of the traveling trolley 3. The supports 8 are located within the traveling groove 101. The first anemometer 7 is rotatably connected within the supports 8. A first gear 9 is fixedly connected to the first anemometer 7. First racks 10 are symmetrically slidably connected to both sides of the supports 8. A control unit is provided within the first gear 9. The control unit is used to realize the linkage between the first anemometer 7 and the first gear 9. In use, when there is wind outside, the wind will cause the first anemometer 7 to rotate, and the control unit will be subjected to a certain centrifugal force. When the wind speed... When the wind speed is low, the first anemometer 7 rotates slowly, and the centrifugal force on the control unit is small, so it cannot drive the control unit to move and cannot achieve linkage between the first anemometer 7 and the first gear 9. When the wind speed is high, the first anemometer 7 rotates quickly, and the centrifugal force on the control unit is large. When the wind speed reaches a certain level, the control unit moves outward under the action of centrifugal force. The control unit will then link with the first gear 9, which will enable the first anemometer 7 to drive the first gear 9 to rotate, thereby driving the first rack 10 to move. When the first rack 10 abuts against the travel groove 101 of the frame 1, the position of the traveling trolley 3 can be controlled to prevent the traveling trolley 3 from moving under the action of wind.

[0043] The control unit includes a ratchet 12, which is symmetrically rotatably connected to the first anemometer 7. A torsion spring (not shown in the figure) is fixedly connected between the ratchet 12 and the first anemometer 7. Several ratchet grooves 11 are provided in the first gear 9, and the ratchet grooves 11 cooperate with the ratchet 12. In use, when the wind speed reaches a certain level, the centrifugal force on the ratchet 12 is greater than the elastic force of the torsion spring. Under the action of centrifugal force, the ratchet 12 moves outward. When the ratchet 12 is inserted into the ratchet groove 11, the first gear 9 rotates together with the first anemometer 7, thereby driving the first rack 10 to move and fix the position of the traveling trolley 3 to prevent the traveling trolley 3 from swaying.

[0044] Working principle: During use, the operator controls the traveling trolley 2 to move, driving the frame 1 to move, and simultaneously controls the traveling carriage 3 to drive the drive unit 4 and the lifting device 6 to move. When it reaches the predetermined position, the operator controls the traveling trolley 2 to stop moving and controls the drive unit 4 to lower the lifting device 6 to the appropriate position, then connects the lifting device 6 to the load. After that, the operator controls the lifting device 6 to rise and move to the placement position. The anti-sway mechanism can guide the movement of the lifting device 6, reducing the adverse effects of external factors on the lifting device 6. When the wind force reaches a certain level, the pulley limit mechanism will activate to fix the pulley block 5, preventing the pulley block 5 from swaying under the action of wind force. At the same time, the anti-sway mechanism will lock the position of the lifting device 6 to further prevent the lifting device 6 from swaying, reduce the probability of the load falling due to the swaying of the lifting device 6, and improve the safety of lifting. Because the second gear 14 on the second anemometer 13 is meshed with the second rack 15, the second... The second rack 15 is connected to the braking unit via the slide bar 16. The rotation of the second gear 14 needs to overcome the resistance from the second rack 15 and the braking unit. When the wind speed is low, the rotational force provided by the second anemometer 13 to the second gear 14 is small and cannot overcome the resistance of the braking unit. The second anemometer 13 will not drive the second gear 14 to rotate, and the braking unit will not brake. The pulley group 5 can rotate freely. When the wind speed reaches a certain level, the second anemometer 13 can provide a larger rotational force to the second gear 14. The second gear 14 drives the second rack 15 and the slide bar 16 to move towards the pulley group 5, overcoming the resistance of the braking unit. Then the braking unit brakes the pulley group 5, and the pulley group 5 stops rotating. This prevents the pulley group 5 from rotating under the drive of the drive device 4, which would cause the pulley group 5 to sway. The simultaneous braking of multiple pulley groups 5 can effectively reduce the swaying.

[0045] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. An anti-sway gantry crane, characterized in that, The system includes a frame (1), a traveling trolley (2), and a traveling carriage (3). The traveling trolley (2) is located at the bottom of the frame (1), and a traveling groove (101) is provided at the top of the frame (1). The traveling carriage (3) is located in the traveling groove (101) of the frame (1). A drive device (4) is provided on the traveling carriage (3), and a pulley block (5) is provided on the drive device (4). A lifting device (6) is provided at the bottom of the pulley block (5), and a lifting device (6) is provided on the lifting device (6). The pulley limiting mechanism corresponds to each pulley group (5). The pulley limiting mechanisms on both sides are symmetrically arranged. The pulley limiting mechanism is used to limit the pulley group (5) and prevent the pulley group (5) from swinging. The frame (1) is equipped with an anti-sway mechanism. The anti-sway mechanism is used to guide the movement of the lifting device (6) and prevent the lifting device (6) from swinging. The drive device (4) is used to drive the pulley group (5) and the lifting device (6) to move up and down to realize the lifting and unloading of heavy objects. The pulley limiting mechanism includes multiple second anemometers (13) that are rotatably connected to the lifting device (6). The second anemometers (13) correspond to each pulley group (5). The second anemometers (13) are equipped with second gears (14). The shaft of the pulley group (5) is movably connected to a slide rod (16). One end of the slide rod (16) is equipped with a second rack (15). The second rack (15) is meshed with the second gear (14). The other end of the slide rod (16) is equipped with a brake. The braking unit is used to brake the pulley block (5) to prevent the lifting device (6) and the pulley block (5) from rotating. The braking unit includes multiple wedge blocks (17) set on the slide rod (16), a compression spring (19) is provided between the slide rod (16) and the shaft of the pulley block (5), multiple wedge blocks (18) are movably connected inside the shaft of the pulley block (5), and a tension spring (20) is provided between the wedge blocks (18) and the shaft of the pulley block (5).

2. The anti-sway gantry crane according to claim 1, characterized in that, The lifting device (6) is connected to multiple support rods (21), and a limit block (22) is provided at the top of the support rod (21). The limit block (22) corresponds to the second rack (15) and is slidably connected.

3. The anti-sway gantry crane according to claim 2, characterized in that, The anti-sway mechanism includes a slider (23), and a slide groove (24) is provided on both sides of the frame (1). The slider (23) is slidably connected in the slide groove (24), and a first sprocket (25) is movably connected in the slider (23). A chain (26) is provided on the first sprocket (25) on both sides, and the chain (26) passes through the lifting device (6).

4. The anti-sway gantry crane according to claim 3, characterized in that, The anti-sway mechanism also includes a threaded rod (29) that is movably connected to the lifting device (6). The upper end of the threaded rod (29) is rotatably connected to the limiting block (22). A third gear (28) is provided on the threaded rod (29). The third gear (28) meshes with the second gear (14). A sliding block (30) is threadedly connected to the threaded rod (29). The sliding block (30) is movably connected to the support rod (21). A vertical rod (31) is provided at the bottom of the sliding block (30). The vertical rod (31) is movably connected to the lifting device (6).

5. The anti-sway gantry crane according to claim 4, characterized in that, The bottom of the pole (31) is provided with a spike (32), which is located above the chain (26).

6. The anti-sway gantry crane according to claim 3, characterized in that, The lifting device (6) has a second sprocket (27) that is movably connected inside, and the second sprocket (27) is engaged with the chain (26).

7. The anti-sway gantry crane according to claim 1, characterized in that, The frame (1) is provided with a trolley limiting mechanism for limiting and fixing the traveling trolley (3). The trolley limiting mechanism includes a first anemometer (7). Both sides of the traveling trolley (3) are provided with brackets (8). The first anemometer (7) is movably connected in the brackets (8). The first anemometer (7) is provided with a first gear (9). The brackets (8) are symmetrically provided with first racks (10) on both sides. The first gear (9) is provided with a control unit. The control unit is used to realize the linkage between the first anemometer (7) and the first gear (9).

8. The anti-sway gantry crane according to claim 7, characterized in that, The control unit includes a ratchet (12), the first anemometer (7) is symmetrically provided with ratchet (12), and the first gear (9) has several ratchet grooves (11) that cooperate with the ratchet (12).

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