Windproof device of portal crane

Abstract

The utility model discloses an anti-wind device of a portal crane, which comprises a support base, guide rails are mounted on two sides of the top of the support base, a crane frame is arranged above the guide rails, the bottom of the crane frame is rotatably connected with pulleys through bearings, the pulleys are slidably arranged on the guide rails, and the guide rails are arranged on the support base. According to the crane disclosed by the utility model, the rotating shafts are rotated through the adjusting assemblies, so that the two groups of supporting frames are rotated and transferred into the sliding grooves under the matching of the linkage gears, and the supporting frames are limited by utilizing the sliding grooves, so that the crane is convenient to move, and the working efficiency of the crane is improved. The supporting frame is arranged in the sliding groove to prevent the crane frame from shaking in strong wind, due to the fact that the supporting frame slides in the sliding groove, stable supporting force can be provided when the crane stands, meanwhile, stable supporting force can be correspondingly provided when the crane normally operates and moves, it is guaranteed that the crane keeps stable in the strong wind, and the wind resistance of the crane is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to a wind prevention device for a gantry crane. Background Technique

[0002] A gantry crane is a deformation of a bridge crane. In ports, it is mainly used for the loading and unloading operations of outdoor freight yards, material yards, and bulk goods. Its metal structure is like a portal frame. Two support legs are installed under the load-bearing main beam, and it can directly run on the ground track. The two ends of the main beam can have outstretched cantilever beams. The gantry crane has the characteristics of high site utilization rate, large operation range, wide adaptability, strong versatility, etc., and is widely used in port freight yards.

[0003] In the prior art, the Chinese utility model content with the authorization announcement number: CN212222207U discloses a wind prevention and fixing device for a gantry crane, including support legs and a stop baffle. The left side wall of the support leg is fixedly installed with a support shell. The right side wall of the inner cavity of the support shell is fixedly installed with a motor. The left side wall of the inner cavity of the support shell is rotatably installed with a rotating shaft. The left end of the rotating shaft is fixedly connected with the output end of the motor. A gear is fixedly installed on the rotating shaft. The lower end of the support shell is fixedly installed with a guide sleeve. A limiting column is movably installed inside the guide sleeve. The upper end of the limiting column movably penetrates the support shell. A rack is fixedly installed at the upper end of the limiting column. The rack and the gear are meshed and driven. A fixing block is fixedly installed at the lower end of the limiting column. A groove is provided on the lower surface of the fixing block, which solves the problems in the existing technology that the fixing device is not firm, the structure is complex, the operation is difficult, it consumes electricity and time, and it wastes manpower and material resources.

[0004] In the above technical solution, by fixing the support legs, it is prevented that the support legs slide under the action of the moving wheels. When a strong wind blows the crane, the crane cannot maintain stability and is prone to displacement, affecting the stability of the crane. However, this technical solution is set to stabilize the position of the crane after it stops working, and the crane cannot be used normally in strong wind weather. Utility Model Content

[0005] The purpose of the utility model is to provide a wind prevention device for a gantry crane. By arranging the support frames on both sides of the crane frame to extend into the sliding grooves, the support frames are limited by the sliding grooves, and the crane frame is strengthened to prevent the crane frame from having a large wind resistance in strong airflows, resulting in the shaking of the crane frame and causing the crane to be unable to work normally in strong airflows, so as to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An anti-wind device for a gantry crane, including a support base, on both sides of the top of the support base, guide rails are installed. Above the guide rails, a crane frame is provided. The bottom of the crane frame is rotatably connected to a pulley through a bearing. The pulley is slidably arranged on the guide rails. On both sides of the crane frame, fixed frames are fixed. Inside the fixed frames, movable boxes that can move up and down are provided. Inside the movable boxes, two groups of rotating shafts are rotatably connected through bearings. On the outer sides of the rotating shafts, meshing linkage gears are fixed. On the outer sides of the linkage gears, support frames are fixed. The support frames penetrate through the movable boxes and extend outwards. On both sides of the support base, sliding grooves for limiting the support frames are opened. Inside the movable boxes, an adjusting assembly for deflecting the support frames is provided.

[0007] Preferably, the adjusting assembly includes a worm gear fixed on the outer side of one group of rotating shafts. Inside the movable box, a worm is rotatably connected through a bearing. The opposite sides of the worm and the worm gear are meshed with each other. One end of the worm penetrates through the movable box and is fixed with a turning handle.

[0008] Preferably, threaded sleeves are fixedly embedded at both the top and bottom of the movable box. Inside the threaded sleeves, threaded rods are threadedly penetrated. The threaded rods are rotatably connected to the inside of the fixed frames through bearings. The top ends of the threaded rods penetrate through the fixed frames and extend outwards and are fixed with turning handles.

[0009] Preferably, sliding grooves are opened inside the fixed frames. Inside the sliding grooves, sliders are slidably connected. The sliders penetrate through the sliding grooves and are fixed to the outer sides of the movable boxes.

[0010] Preferably, grooves are opened on the outer sides of the support frames, and inside the grooves, rollers are rotatably connected through bearings. The rollers penetrate through the grooves and extend outwards.

[0011] Preferably, ventilation openings are opened on the crane frame, and the ventilation openings extend in different directions.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. By rotating the rotating shafts through the adjusting assembly, the two support frames are rotated and transferred into the sliding grooves under the cooperation of the linkage gears. The sliding grooves are used to limit the support frames, preventing the crane frame from shaking in strong winds. Since the support frames slide in the sliding grooves, not only can a stable supporting force be provided when the crane is stationary, but also a corresponding stable supporting force can be provided when the crane is operating and moving normally, ensuring that the crane remains stable in strong winds and improving the anti-wind ability of the crane.

[0014] 2. The utility model facilitates the lifting of the movable box and the support frame through the cooperation of the threaded rod and the threaded sleeve, adjusts the fitting degree between the support frame and the sliding groove, and restricts the crane frame on the guide rail in cooperation with the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 is a partial three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 is a top-view sectional three-dimensional structural schematic diagram of the movable box of the utility model;

[0018] Figure 4 is a side-view sectional three-dimensional structural schematic diagram of the movable box of the utility model.

[0019] Reference numerals in the drawings: 1, support base; 2, guide rail; 3, crane frame; 4, pulley; 5, fixed frame; 6, movable box; 7, rotating shaft; 8, linkage gear; 9, support frame; 10, sliding groove; 11, adjusting assembly; 111, worm gear; 112, worm; 12, threaded sleeve; 13, threaded rod; 14, chute; 15, slider; 16, roller; 17, ventilation opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides a wind-proof device for a gantry crane as shown in Figures 1 to 4 , including a support base 1. Guide rails 2 are installed on both sides of the top of the support base 1. A crane frame 3 is arranged above the guide rails 2. The bottom of the crane frame 3 is rotatably connected by bearings with pulleys 4. The pulleys 4 are slidably arranged on the guide rails 2. Fixed frames 5 are fixed on both sides of the crane frame 3. A movable box 6 that can move up and down is arranged in the inner cavity of the fixed frame 5. Two groups of rotating shafts 7 are rotatably connected by bearings in the inner cavity of the movable box 6. Linkage gears 8 that mesh with each other are fixed on the outer sides of the rotating shafts 7. A support frame 9 is fixed on the outer side of the linkage gear 8. The support frame 9 penetrates through the movable box 6 and extends outwards. Sliding grooves 10 for limiting the support frame 9 are opened on both sides of the support base 1. An adjusting assembly 11 for deflecting the support frame 9 is arranged in the inner cavity of the movable box 6;

[0022] By adjusting the adjusting component 11 to rotate the rotating shaft 7, the two sets of support frames 9 are rotated and transferred into the sliding groove 10 under the cooperation of the linkage gears 8. The sliding groove 10 is used to limit the support frame 9 to prevent the crane frame 3 from shaking in strong winds. Since the support frame 9 slides in the sliding groove 10, it can not only provide a stable supporting force when the crane is stationary, but also provide a corresponding stable supporting force when the crane is operating and moving normally, ensuring that the crane remains stable in strong winds and improving the wind resistance of the crane.

[0023] The adjusting component 11 includes a worm gear 111 fixed on the outer side of a set of rotating shafts 7. The inner cavity of the movable box 6 is rotationally connected with a worm 112 through a bearing. One side of the worm 112 facing the worm gear 111 is meshed with each other. One end of the worm 112 penetrates through the movable box 6 and is fixed with a turning handle. By driving the worm gear 111 to rotate by the worm 112, a set of rotating shafts 7 is rotated, and then the other set of rotating shafts 7 rotates synchronously through the linkage gears 8, so as to synchronously move the two sets of support frames 9.

[0024] Threaded sleeves 12 are fixedly embedded at the top and bottom of the movable box 6. The inner cavity of the threaded sleeve 12 is threaded through a threaded rod 13. The threaded rod 13 rotates in the inner cavity of the fixed frame 5 through a bearing. The top end of the threaded rod 13 penetrates through the fixed frame 5 and extends outward and is fixed with a turning handle. Through the cooperation of the threaded rod 13 and the threaded sleeve 12, it is convenient to lift the movable box 6 and the support frame 9, adjust the fitting degree between the support frame 9 and the sliding groove 10, and cooperate with the pulley 4 to limit the crane frame 3 on the guide rail 2.

[0025] A sliding groove 14 is opened in the inner cavity of the fixed frame 5. A slider 15 is slidably connected in the inner cavity of the sliding groove 14. The slider 15 penetrates through the sliding groove 14 and is fixed on the outer side of the movable box 6. By sliding the slider 15 in the inner cavity of the sliding groove 14, it is convenient to limit the movable box 6 and ensure that the movable box 6 is stable in the fixed frame 5, so as to avoid the shaking of the movable box 6 from affecting the supporting ability of the support frame 9 for the crane frame 3.

[0026] A groove is opened on the outer side of the support frame 9, and a roller 16 is rotationally connected in the inner cavity of the groove through a bearing. The roller 16 penetrates through the groove and extends outward. Through the arrangement of the roller 16, the friction between the support frame 9 and the inner wall of the sliding groove 10 is reduced, and the service life of the support frame 9 is increased.

[0027] Ventilation openings 17 are opened on the crane frame 3 and extend in different directions. Through the arrangement of the ventilation openings 17, the wind resistance of the crane frame 3 is reduced. At the same time, by setting the orientation of the ventilation openings 17, it is ensured that when strong winds blow from different directions, the ventilation openings 17 can all pass the airflow, reducing the interference of the strong winds on the crane frame 3.

[0028] During specific use, in strong wind weather, the worm 112 is driven by the rotating handle, and then the worm 112 drives a set of rotating shafts 7 through the worm wheel 111. Then, the rotating rotating shafts 7 drive another set of rotating shafts 7 through the linkage gears 8. Then, the two sets of rotating shafts 7 drive the support frame 9 to rotate synchronously and reversely, so that the support frame 9 moves into the sliding groove 10. Then, the threaded rod 13 is rotated by the rotating handle, so that the threaded rod 13 drives the movable box 6 to move up and down through the threaded sleeve 12. Then, the support frame 9 is attached to the inner wall of the sliding groove 10. The roller 16 is attached to the sliding groove 10, and the crane frame 3 is restricted on the guide rail 2 in cooperation with the pulley 4. At the same time, when the crane moves normally, the support frame 9 can slide synchronously in the sliding groove 10 to ensure the normal operation of the crane in strong wind weather.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A windproof device for a gantry crane, comprising a support base (1), characterized in that: Guide rails (2) are installed on both sides of the top of the support base (1), a crane frame (3) is arranged above the guide rails (2), the bottom of the crane frame (3) is rotatably connected to a pulley (4) through a bearing, and the pulley (4) is slidably arranged on the guide rails (2), fixed frames (5) are fixed on both sides of the crane frame (3), the inner cavity of the fixed frame (5) is provided with a movable box (6) that can move up and down, the inner cavity of the movable box (6) is rotatably connected to two groups of rotating shafts (7) through bearings, the outer side of the rotating shaft (7) is fixed with a mutually meshing linkage gear (8), the outer side of the linkage gear (8) is fixed with a support frame (9), the support frame (9) penetrates the movable box (6) and extends outward, sliding grooves (10) for limiting the support frame (9) are opened on both sides of the support base (1), and the inner cavity of the movable box (6) is provided with an adjustment component (11) for deflecting the support frame (9).

2. A windproof device for a gantry crane according to claim 1, characterized in that: The adjustment assembly (11) comprises a worm wheel (111) fixed to the outside of a set of rotating shafts (7); the inner cavity of the movable box (6) is rotatably connected to a worm (112) via a bearing; the worm (112) and the worm wheel (111) are meshed with each other on the sides facing each other; one end of the worm (112) passes through the movable box (6) and is fixed with a rotating handle.

3. A windproof device for a gantry crane according to claim 1, characterized in that: The top and bottom of the movable box (6) are fixedly embedded with a threaded sleeve (12), the inner cavity of the threaded sleeve (12) is threaded with a threaded rod (13), the threaded rod (13) rotates in the inner cavity of the fixed frame (5) through a bearing, and the top end of the threaded rod (13) penetrates the fixed frame (5) to extend outward and is fixed with a rotating handle.

4. A windproof device for a gantry crane according to claim 1, characterized in that: The inner cavity of the fixed frame (5) is provided with a slide groove (14), the inner cavity of the slide groove (14) is slidably connected with a slider (15), and the slider (15) passes through the slide groove (14) and is fixed to the outer side of the movable box (6).

5. The windproof device for a gantry crane according to claim 1, characterized in that: A groove is provided on the outer side of the support frame (9), and a roller (16) is rotatably connected to the inner cavity of the groove via a bearing, and the roller (16) passes through the groove and extends outward.

6. The windproof device for a gantry crane according to claim 1, characterized in that: The crane frame (3) is provided with ventilation openings (17), and the ventilation openings (17) extend in different directions.

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