An anti-sway device for a crane lifting mechanism

Abstract

This utility model discloses an anti-sway device for a crane lifting mechanism, comprising an upper frame and a lower frame. The lower frame is located below the upper frame, and several hooks are fixedly installed on the lower surface of the lower frame. The lifting mechanism body is fixedly installed on the upper surface of the upper frame, and two fixing brackets are fixedly installed on the upper surface of the lower frame. This utility model, through the coordinated arrangement of components such as the upper frame, lower frame, lifting mechanism body, steel rope, wheel, connecting frame, connecting bracket, telescopic bracket, fixing bolts, rotating plate, and mounting bolts, achieves the function of preventing the lower frame and the load from swaying. By setting a telescopic bracket between the upper and lower frames, the tightness of the connection between the upper and lower frames is improved, thereby preventing deformation and swaying between the upper and lower frames. This prevents the load from falling during lifting, reduces safety accidents, ensures the normal operation of lifting work, and improves the safety of the crane.

Description

Technical Field

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

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. Cranes mainly include hoisting mechanisms, traveling mechanisms, luffing mechanisms, slewing mechanisms, and metal structures, among which the hoisting mechanism is the basic working mechanism of a crane.

[0003] In existing technologies, the lifting mechanism of traditional cranes mostly consists of a suspension system and a winch, without anti-sway devices. When lifting heavy objects, they are directly pulled by steel cables. However, because steel cables are prone to deformation and there is no direct connection between the upper and lower frames of the lifting mechanism, the lower frame and the heavy object are prone to swaying during the lifting process, which can cause the heavy object to fall, resulting in safety accidents, affecting the normal operation of lifting work, and reducing the safety of the crane. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-sway device for a crane lifting mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anti-sway device for a crane lifting mechanism, comprising an upper frame and a lower frame, wherein the lower frame is disposed below the upper frame, and a plurality of hooks are fixedly installed on the lower surface of the lower frame; the main body of the lifting mechanism is fixedly installed on the upper surface of the upper frame; two fixed frames are fixedly installed on the upper surface of the lower frame, and the inner walls of the two fixed frames are rotatably connected to the wheels; two connecting frames are fitted on the outer surfaces of both ends of the upper and lower frames; four connecting frames are fixedly installed on the upper surface of the upper frame and the lower surface of the lower frame; a telescopic frame is fixedly connected between the connecting frames on the upper frame and the corresponding connecting frames on the lower frame; fixing bolts are threadedly connected to the outer surfaces of both ends of the connecting frames; a rotating plate is rotatably connected to the side wall of the opening end of the connecting frame; mounting bolts are threadedly connected to the side wall of the rotating plate; and a fixing component is provided on the outside of the connecting frame.

[0006] As a further description of the above technical solution: steel ropes are extended from the outer surfaces of both ends of the lifting mechanism body near the middle distribution part. The other ends of the two steel ropes are respectively fixed to the drums at both ends of the lifting mechanism body. The two steel ropes are respectively sleeved on the outer surface of the corresponding sheave. By setting the above components, the function of connecting the lower frame body and the upper frame body is realized.

[0007] As a further description of the above technical solution: the outer surfaces of the eight connecting frames are all provided with connecting grooves that are adapted to the corresponding connecting brackets. The fixing bolts penetrate the outer surfaces of the connecting brackets and are inserted into the corresponding upper or lower frame. The outer surfaces of the connecting frames are provided with fixing holes for the fixing bolts to be inserted. By setting the above components, the function of fixing the connecting frames is realized.

[0008] As a further description of the above technical solution: the mounting bolt passes through one side of the rotating plate and extends to the other side of the rotating plate. The outer surfaces of the upper frame and the lower frame are provided with mounting holes for insertion of the mounting bolt. By setting the above components, the function of fixing the rotating plate is realized.

[0009] As a further description of the above technical solution: the fixing component includes a mounting frame, which is fixedly mounted on the outer surface of the connecting frame. A mounting block is slidably connected to the inner wall of the mounting frame. A fixing plate is fixedly mounted on the lower surface of the mounting block. A lead screw is provided through the side wall of the fixing plate. A rotating block is fixedly mounted at one end of the lead screw away from the fixing plate. A push plate is rotatably connected to the other end of the lead screw. A limit rod is fixedly mounted on the side wall of the push plate near the fixing plate. A locking block is fixedly mounted on the inner wall of the mounting frame. A locking groove is opened on the side wall of the mounting block. A limit bolt is threadedly connected to the outer surface of the mounting frame. By setting the fixing component, the function of clamping and positioning heavy objects is realized.

[0010] As a further description of the above technical solution: the lead screw is threaded to the side wall of the fixed plate, and the limiting rod is inserted into the side wall of the fixed plate. By setting the above components, the function of limiting the movement direction of the push plate is realized.

[0011] As a further description of the above technical solution: both the card block and the card slot are T-shaped, the inner walls of the card block and the card slot are slidably connected, and the limiting bolt passes through the outer surface of the mounting frame and is inserted into the mounting block. By setting the above components, the function of fixing the mounting block is realized.

[0012] This utility model has the following beneficial effects:

[0013] 1. Compared with existing technologies, the anti-sway device of this crane's hoisting mechanism, through the cooperation of components such as the upper frame, lower frame, hook, hoisting mechanism body, steel rope, fixing frame, wheel, connecting frame, connecting bracket, telescopic frame, fixing bolts, rotating plate, and mounting bolts, achieves the function of preventing the lower frame and the load from swaying. By setting a telescopic frame between the upper and lower frames, the tightness of the connection between the upper and lower frames is improved, thereby preventing deformation and swaying between the upper and lower frames. This prevents the load from falling during the hoisting process, reduces safety accidents, ensures the normal operation of the hoisting work, and improves the safety of the crane.

[0014] 2. Compared with existing technologies, the anti-sway device of this crane's lifting mechanism achieves the function of clamping and fixing heavy objects through the cooperation of components such as mounting frame, mounting block, fixing plate, screw rod, rotating block, push plate, limit rod, locking block, locking groove and limit bolt. By using four screw rods to drive four push plates to move towards the heavy object, when all four push plates are in contact with the heavy object, the two sides of the heavy object are clamped, thereby preventing the heavy object from swaying under the lower frame and improving the stability of lifting heavy objects. On the basis of the original, the safety of the crane is further improved. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an anti-sway device for a crane lifting mechanism proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the lifting mechanism of an anti-sway device for a crane lifting mechanism proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting frame structure of an anti-sway device for a crane lifting mechanism proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the telescopic frame structure of an anti-sway device for a crane lifting mechanism proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the fixing component structure of an anti-sway device for a crane lifting mechanism proposed in this utility model.

[0020] Legend:

[0021] 1. Upper frame; 2. Lower frame; 3. Hook; 4. Lifting mechanism body; 5. Steel rope; 6. Fixing frame; 7. Hanging wheel; 8. Connecting frame; 9. Connecting frame; 10. Telescopic frame; 11. Fixing bolt; 12. Rotating plate; 13. Mounting bolt; 14. Mounting frame; 15. Mounting block; 16. Fixing plate; 17. Screw rod; 18. Rotating block; 19. Push plate; 20. Limiting rod; 21. Locking block; 22. Locking groove; 23. Limiting bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1 to 5 This utility model provides an anti-sway device for a crane lifting mechanism: it includes an upper frame 1 and a lower frame 2. The lower frame 2 is located below the upper frame 1. Several hooks 3 are fixedly installed on the lower surface of the lower frame 2. The lifting mechanism body 4 is fixedly installed on the upper surface of the upper frame 1. Two fixing frames 6 are fixedly installed on the upper surface of the lower frame 2. The inner walls of the two fixing frames 6 are rotatably connected to the lifting wheels 7. Steel ropes 5 extend from the outer surfaces of both ends of the lifting mechanism body 4 near the center section. The other end of 5 is fixed to the drums at both ends of the main body 4 of the lifting mechanism. The two steel ropes 5 are respectively sleeved on the outer surface of the corresponding sheaves 7. Two connecting frames 8 are sleeved on the outer surfaces of both ends of the upper frame 1 and the lower frame 2. Four connecting frames 9 are fixedly installed on the upper surface of the upper frame 1 and the lower surface of the lower frame 2. The outer surfaces of the eight connecting frames 8 are all provided with connecting grooves that are adapted to the corresponding connecting frames 9. Telescopic frames 10 are fixedly connected between the connecting frames 8 on the upper frame 1 and the corresponding connecting frames 8 on the lower frame 2.

[0024] To quickly fix the connecting frame 8, the outer surfaces of both ends of the connecting frame 9 are threaded with fixing bolts 11. The fixing bolts 11 penetrate the outer surface of the connecting frame 9 and are inserted into the corresponding upper frame 1 or lower frame 2. The outer surface of the connecting frame 8 is provided with fixing holes for insertion of the fixing bolts 11. The side wall of the open end of the connecting frame 8 is rotatably connected with a rotating plate 12. The mounting bolts 13 penetrate one side of the rotating plate 12 and extend to the other side of the rotating plate 12. The outer surfaces of the upper frame 1 and the lower frame 2 are provided with mounting holes for insertion of the mounting bolts 13. The side wall of the rotating plate 12 is threaded with mounting bolts 13.

[0025] By setting up an upper frame 1, a lower frame 2, a hook 3, a lifting mechanism body 4, a steel rope 5, a fixing frame 6, a lifting wheel 7, a connecting frame 8, a connecting frame 9, a telescopic frame 10, fixing bolts 11, a rotating plate 12, and mounting bolts 13, the function of preventing the lower frame 2 and the heavy object from swaying is achieved. By setting the telescopic frame 10 between the upper frame 1 and the lower frame 2, the tightness of the connection between the upper frame 1 and the lower frame 2 is improved, thereby preventing deformation and swaying between the upper frame 1 and the lower frame 2. This prevents the heavy object from falling during the lifting process, reduces safety accidents, ensures the normal operation of the lifting work, and improves the safety of the crane.

[0026] A fixing component is provided on the outside of the connecting frame 8. The fixing component includes a mounting frame 14, which is fixedly installed on the outer surface of the connecting frame 8. A mounting block 15 is slidably connected to the inner wall of the mounting frame 14. A fixing plate 16 is fixedly installed on the lower surface of the mounting block 15. A lead screw 17 is provided through the side wall of the fixing plate 16 and is threadedly connected to the side wall of the fixing plate 16. A rotating block 18 is fixedly installed at the end of the lead screw 17 away from the fixing plate 16, and a push plate is rotatably connected to the other end of the lead screw 17. 19. A limit rod 20 is fixedly installed on the side wall of the push plate 19 near the fixed plate 16. The limit rod 20 is inserted into the side wall of the fixed plate 16. A locking block 21 is fixedly installed on the inner wall of the mounting frame 14. A locking groove 22 is opened on the side wall of the mounting block 15. Both the locking block 21 and the locking groove 22 are T-shaped. The locking block 21 and the inner wall of the locking groove 22 are slidably connected. A limit bolt 23 is threadedly connected to the outer surface of the mounting frame 14. The limit bolt 23 passes through the outer surface of the mounting frame 14 and is inserted into the mounting block 15.

[0027] By setting up the mounting frame 14, mounting block 15, fixing plate 16, lead screw 17, rotating block 18, push plate 19, limit rod 20, locking block 21, locking groove 22 and limit bolt 23, the function of clamping and fixing heavy objects is realized. By using the four lead screws 17 to drive the four push plates 19 to move towards the heavy object, when all four push plates 19 are in contact with the heavy object, the two sides of the heavy object are clamped, thereby preventing the heavy object from swaying under the lower frame 2, improving the stability of lifting heavy objects, and further improving the safety of the crane on the original basis.

[0028] Working principle: Before lifting the heavy object, assemble the lifting mechanism. First, connect the upper frame 1 to the crane. Then, move the four telescopic frames 10 close to the upper frame 1 and the lower frame 2, so that the connecting frame 8 at the top of the telescopic frame 10 aligns with the upper frame 1, and the connecting frame 8 at the bottom of the telescopic frame 10 aligns with the lower frame 2. At the same time, the connecting frames 9 on the upper frame 1 and the lower frame 2 are aligned with the corresponding connecting slots. Move the telescopic frame 10 so that the connecting frames 8 at both ends of the telescopic frame 10 are respectively fitted onto the outer surfaces of the upper frame 1 and the lower frame 2, while the connecting frames 9 slide into the interior of the connecting slots. Then, tighten the fixing bolts 11 so that the fixing bolts 11 penetrate the connecting slots. The outer surface of the connecting frame 9 is fixed, and the corresponding connecting frame 8 is inserted through the fixing hole and screwed into the interior of the upper frame 1 and the lower frame 2 to fix the position of the connecting frame 8. Then, the rotating plate 12 at the opening end of the connecting frame 8 is rotated so that the rotating plate 12 is in contact with the outer surface of the corresponding upper frame 1 and the lower frame 2. Then, the mounting bolt 13 is tightened so that the mounting bolt 13 passes through the rotating plate 12 and is screwed into the interior of the corresponding mounting hole, thereby fixing the rotating plate 12. This makes the connecting frame 8 tightly connected to the corresponding upper frame 1 and the lower frame 2, thereby fixing the telescopic frame 10. The above operation is repeated to fix the other three telescopic frames 10.

[0029] Next, move the fixing plate 16 close to the lower frame 2 so that the mounting block 15 is aligned with the mounting frame 14 and the locking block 21 is aligned with the locking groove 22. Move the fixing plate 16 so that the mounting block 15 slides along the outer surface of the connecting frame 8 into the mounting frame 14 and the locking block 21 slides inside the locking groove 22. After the mounting block 15 slides into the mounting frame 14, tighten the limiting bolt 23 so that the limiting bolt 23 passes through the outer surface of the mounting frame 14 and is screwed into the interior of the mounting block 15 to fix the mounting block 15, thereby fixing the fixing plate 16. Repeat the above operation to fix the other three fixing plates 16.

[0030] When lifting a heavy object, first connect the heavy object to the lower frame 2 via the hook 3. Then rotate the four rotating blocks 18. When the rotating blocks 18 rotate, they drive the lead screw 17 to rotate. During the rotation of the lead screw 17, the lead screw 17 extends towards the fixed plate 16, thereby driving the push plate 19 to move closer to the heavy object. This causes the limit rod 20 to extend towards the fixed plate 16. When all four push plates 19 are in contact with the heavy object, the heavy object is clamped and positioned.

[0031] Next, the main body 4 of the lifting mechanism is started, causing the steel cable 5 to retract into the interior of the main body 4 of the lifting mechanism, thereby shortening the steel cable 5. During the shortening process, the steel cable 5 drives the sheave 7 to rotate inside the fixed frame 6, thereby causing the steel cable 5 to drive the lower frame 2 to rise through the sheave 7 and the fixed frame 6. The lower frame 2 moves closer to the upper frame 1. During the rising process of the lower frame 2, the hook 3 lifts the heavy object. During the process of the lower frame 2 moving closer to the upper frame 1, the telescopic frame 10 folds and shortens.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-sway device for a crane lifting mechanism, comprising an upper frame (1) and a lower frame (2), characterized in that: The lower frame (2) is located below the upper frame (1). Several hooks (3) are fixedly installed on the lower surface of the lower frame (2). The upper surface of the upper frame (1) is fixedly installed with the main body of the lifting mechanism (4). Two fixing frames (6) are fixedly installed on the upper surface of the lower frame (2). The inner walls of the two fixing frames (6) are rotatably connected with wheels (7). Two connecting frames (8) are fitted on the outer surfaces of both ends of the upper frame (1) and the lower frame (2). The upper surface of the upper frame (1) Four connecting frames (9) are fixedly installed on the lower surface of the upper frame (1) and the lower frame (2). A telescopic frame (10) is fixedly connected between the connecting frame (8) on the upper frame (1) and the corresponding connecting frame (8) on the lower frame (2). The outer surfaces of the two ends of the connecting frame (9) are threaded with fixing bolts (11). The side wall of the opening end of the connecting frame (8) is rotatably connected with a rotating plate (12). The side wall of the rotating plate (12) is threaded with mounting bolts (13). A fixing component is provided on the outside of the connecting frame (8).

2. The anti-sway device for a crane hoisting mechanism according to claim 1, characterized in that: Steel ropes (5) are extended from the outer surfaces of both ends of the main body (4) of the lifting mechanism near the middle distribution part. The other ends of the two steel ropes (5) are respectively fixed on the drums at both ends of the main body (4) of the lifting mechanism, and the two steel ropes (5) are respectively sleeved on the outer surface of the corresponding sheaves (7).

3. The anti-sway device for a crane hoisting mechanism according to claim 1, characterized in that: The outer surfaces of the eight connecting frames (8) are all provided with connecting grooves that are adapted to the corresponding connecting brackets (9). The fixing bolts (11) penetrate the outer surface of the connecting brackets (9) and are inserted into the corresponding upper frame (1) or lower frame (2). The outer surface of the connecting frame (8) is provided with fixing holes for insertion of the fixing bolts (11).

4. The anti-sway device for a crane hoisting mechanism according to claim 1, characterized in that: The mounting bolt (13) passes through one side of the rotating plate (12) and extends to the other side of the rotating plate (12). The outer surfaces of the upper frame (1) and the lower frame (2) are provided with mounting holes for insertion of the mounting bolt (13).

5. The anti-sway device for a crane hoisting mechanism according to claim 1, characterized in that: The fixing assembly includes a mounting frame (14), which is fixedly mounted on the outer surface of the connecting frame (8). A mounting block (15) is slidably connected to the inner wall of the mounting frame (14). A fixing plate (16) is fixedly mounted on the lower surface of the mounting block (15). A lead screw (17) is provided through the side wall of the fixing plate (16). A rotating block (18) is fixedly mounted at one end of the lead screw (17) away from the fixing plate (16). A push plate (19) is rotatably connected to the other end of the lead screw (17). A limit rod (20) is fixedly mounted on the side wall of the push plate (19) near the fixing plate (16). A locking block (21) is fixedly mounted on the inner wall of the mounting frame (14). A locking groove (22) is opened on the side wall of the mounting block (15). A limit bolt (23) is threadedly connected to the outer surface of the mounting frame (14).

6. The anti-sway device for a crane hoisting mechanism according to claim 5, characterized in that: The lead screw (17) is threaded to the side wall of the fixing plate (16), and the limiting rod (20) is inserted into the side wall of the fixing plate (16).

7. The anti-sway device for a crane hoisting mechanism according to claim 5, characterized in that: The shape of the card block (21) and the card slot (22) is T-shaped. The inner walls of the card block (21) and the card slot (22) are slidably connected. The limiting bolt (23) penetrates the outer surface of the mounting frame (14) and is inserted into the mounting block (15).

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