Automatic anti-swing device of crane

Abstract

An automatic anti-swing device of a crane effectively solves the problem that lifted goods are prone to swing and comprises a main beam, supporting legs and an electric trolley, a winding drum is installed on the electric trolley, a fixing frame is arranged below the electric trolley, the upper end of the fixing frame is rotationally connected with a pulley block, a first steel wire rope is wound around the pulley block, and the other end of the first steel wire rope is wound around the winding drum. Auxiliary mechanisms are arranged on the front side and the rear side of the fixing frame and comprise first fixed pulleys, second fixed pulleys, third fixed pulleys and second steel wire ropes, the first fixed pulleys and the third fixed pulleys are located on the lower portion of the fixing frame, and the second fixed pulleys are located on the upper portion of the fixing frame. The second steel wire rope sequentially penetrates through the first fixed pulley, the second fixed pulley and the third fixed pulley, supporting plates are fixed to the left end and the right end of the second steel wire rope, rings are fixed to the sides, away from the second steel wire rope, of the supporting plates, vertical guide rods are fixed to the supporting legs, and the rings vertically slide along the guide rods.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, in particular to an automatic anti-sway device for cranes. Background Art

[0002] A crane is a lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called an overhead crane or a crane. In a working cycle, the corresponding mechanisms of the crane for taking materials, moving, and unloading work alternately. It is the most widely used and most numerous type of lifting machine. When the crane is working, the wire rope has a flexible structure. Continuously starting or braking the crane will cause the lifted cargo to sway. If it is operated outdoors, the lifted cargo will also sway due to the wind, affecting the safety of the lifted cargo. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide an automatic anti-sway device for a crane, which effectively solves the problem that the hoisted goods are prone to sway.

[0004] The technical solution to solve the technical problem is: it includes a main beam, a support leg, and an electric trolley. A drum is installed on the electric trolley. A fixed frame is provided under the electric trolley. A pulley block is rotatably connected to the upper end of the fixed frame. The pulley block is wound with a first steel wire rope. The other end of the first steel wire rope is wound on the drum. Auxiliary mechanisms are provided on the front and rear sides of the fixed frame. The auxiliary mechanisms include a first fixed pulley, a second fixed pulley, a third fixed pulley and a second steel wire rope. The first fixed pulley and the third fixed pulley are located at the lower part of the fixed frame, and the second fixed pulley is located at the upper part of the fixed frame. The second steel wire rope is arranged in a horizontal direction, and the second steel wire rope passes through the first fixed pulley, the second fixed pulley and the third fixed pulley in sequence. Support plates are fixed at both ends of the second steel wire rope, and a ring is fixed on the side of the support plate away from the second steel wire rope. A vertical guide rod is fixed on the support leg, and the ring slides up and down along the guide rod.

[0005] Preferably, the first fixed pulley, the second fixed pulley and the third fixed pulley are rotatably connected to the fixed frame respectively, the first fixed pulley and the third fixed pulley are located on the same horizontal line, and the second fixed pulley is located between the first fixed pulley and the third fixed pulley.

[0006] Preferably, the fixing frame is fixed with a first protective cover located at the upper half of the second fixed pulley, and the fixing frame is fixed with a second protective cover located at the lower half of the first fixed pulley and the lower half of the third fixed pulley.

[0007] Preferably, in order to facilitate lifting of goods, a hook is installed at the lower end of the fixing frame.

[0008] Compared with the traditional equipment, the utility model has the following advantages: 1) The structure is ingenious. The first steel wire rope and the second steel wire rope are combined. The first steel wire rope lifts the goods in the vertical direction, and the second steel wire rope limits the fixed frame in the front and rear directions, effectively preventing the lifted goods from swaying in the front and rear directions; 2) The second steel wire rope passes through the first fixed pulley, the second fixed pulley and the third fixed pulley in sequence, effectively alleviating the impact force of the goods moving in the left and right directions, improving the stability of the goods, and effectively preventing the lifted goods from swaying in the left and right directions. It has good adaptive adjustment effect, low cost, and is safe and reliable; 3) The ring slides up and down on the guide rod, and the friction is small, which is conducive to the second steel wire rope driving the support plate and the ring to move up and down as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the front view of the utility model;

[0010] Figure 2 It is a schematic diagram of the three-dimensional structure of the guide rod, the second steel wire rope and the support plate in the utility model;

[0011] Figure 3 It is a schematic diagram of the three-dimensional structure of the first fixed pulley, the second fixed pulley and the third fixed pulley in the utility model.

[0012] Figure numerals: 1. main beam; 2. outrigger; 3. electric trolley; 4. reel; 5. fixed frame; 6. pulley block; 7. first steel wire rope; 8. first fixed pulley; 9. second fixed pulley; 10. third fixed pulley; 11. second steel wire rope; 12. support plate; 13. ring; 14. guide rod; 15. first protective cover; 16. second protective cover; 17. hook. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0014] Depend on Figures 1 to 3An automatic anti-sway device of a crane is provided, comprising a main beam 1, a leg 2, and an electric trolley 3. A drum 4 is installed on the electric trolley 3. A fixed frame 5 is provided below the electric trolley 3. A pulley block 6 is rotatably connected to the upper end of the fixed frame 5. The pulley block 6 is wound with a first steel wire rope 7. The other end of the first steel wire rope 7 is wound on the drum 4. Auxiliary mechanisms are provided on the front and rear sides of the fixed frame 5. The auxiliary mechanisms include a first fixed pulley 8, a second fixed pulley 9, a third fixed pulley 10 and a second steel wire rope 11. The first fixed pulley 8 and the third fixed pulley 10 are located at the lower part of the fixed frame 5, and the second fixed pulley 9 is located at the upper part of the fixed frame 5. The second steel wire rope 11 is arranged in the horizontal direction, and the second steel wire rope 11 passes through the first fixed pulley 8, the second fixed pulley 9 and the third fixed pulley 10 in sequence. Support plates 12 are fixed at both ends of the second steel wire rope 11, and a ring 13 is fixed on the side of the support plate 12 away from the second steel wire rope 11. A vertical guide rod 14 is fixed on the support leg 2, and the ring 13 slides up and down along the guide rod 14.

[0015] The first fixed pulley 8 , the second fixed pulley 9 and the third fixed pulley 10 are rotatably connected to the fixed frame 5 respectively. The first fixed pulley 8 and the third fixed pulley 10 are located on the same horizontal line, and the second fixed pulley 9 is located between the first fixed pulley 8 and the third fixed pulley 10 .

[0016] In order to prevent the second steel wire from escaping from the first fixed pulley 8, the second fixed pulley 9 and the third fixed pulley 10, the fixed frame 5 is fixed with a first protective cover 15 located on the upper half of the second fixed pulley 9, and the fixed frame 5 is fixed with a second protective cover 16 located on the lower half of the first fixed pulley 8 and the lower half of the third fixed pulley 10.

[0017] In order to facilitate lifting of goods, a hook 17 is installed at the lower end of the fixing frame 5.

[0018] When the utility model is in use, when it is necessary to lift the cargo, the drum 4 is started, the drum 4 releases the first steel wire rope 7, the fixed frame 5, the hook 17 and the pulley block 6 move downward under the action of gravity, the fixed frame 5 drives the second steel wire rope 11, the support plate 12 and the ring 13 to move downward, the ring 13 moves downward along the guide rod 14, when the hook 17 hangs the cargo, the drum 4 is started, the drum 4 tightens the first steel wire rope 7, under the action of the pulley block 6, the first steel wire rope 7 drives the fixed frame 5, the hook 17 and the cargo to move upward as a whole, and at the same time , the fixing frame 5 drives the second steel wire rope 11 and the ring 13 to move upward as a whole. When the goods rise to a suitable height, a trolley movement mechanism is installed on the support leg 2. The trolley movement mechanism drives the main beam 1, the electric trolley 3, the first steel wire rope 7, the second steel wire rope 11, the fixing frame 5, the hook 17 and the goods to move in the front-to-back direction as a whole. The second steel wire rope 11 is provided on the front and rear sides of the fixing frame 5. The second steel wire rope 11 is in a taut state. The second steel wire rope 11 limits the fixing frame 5 and the goods in the front-to-back direction to prevent the goods from shaking in the front-to-back direction;

[0019] When the electric trolley 3 moves left and right on the main beam 1, the first steel wire rope 7 drives the goods to move left and right via the fixed frame 5, and the first fixed pulley 8, the second fixed pulley 9 and the third fixed pulley 10 move left and right along the second steel wire rope 11. Since the first fixed pulley 8 and the third fixed pulley 10 are located on the same horizontal line, the second fixed pulley 9 is located between the first fixed pulley 8 and the third fixed pulley 10, and the position of the second fixed pulley 9 is higher than the first fixed pulley 8 or the third fixed pulley 10, the second steel wire rope 11 passes through the first fixed pulley 8, the second fixed pulley 9 and the third fixed pulley 10 in sequence, so the second steel wire rope 11 has a certain buffering effect on the fixed frame 5, effectively reduces the speed of the left and right movement of the goods, and avoids the goods from swinging left and right. It has good stability, adaptive adjustment, and is convenient and practical.

[0020] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. An automatic anti-sway device for a crane, comprising a main beam (1), a leg (2), and an electric trolley (3), wherein a drum (4) is mounted on the electric trolley (3), a fixed frame (5) is provided below the electric trolley (3), the upper end of the fixed frame (5) is rotatably connected to a pulley block (6), the pulley block (6) is wound with a first steel wire rope (7), and the other end of the first steel wire rope (7) is wound on the drum (4), characterized in that: Auxiliary mechanisms are provided on both the front and rear sides of the fixed frame (5), and the auxiliary mechanisms include a first fixed pulley (8), a second fixed pulley (9), a third fixed pulley (10) and a second steel wire rope (11). The first fixed pulley (8) and the third fixed pulley (10) are located at the lower part of the fixed frame (5), and the second fixed pulley (9) is located at the upper part of the fixed frame (5). The second steel wire rope (11) is arranged in a horizontal direction, and the second steel wire rope (11) passes through the first fixed pulley (8), the second fixed pulley (9) and the third fixed pulley (10) in sequence. Support plates (12) are fixed to both left and right ends of the second steel wire rope (11), and a ring (13) is fixed to the side of the support plate (12) away from the second steel wire rope (11). A vertical guide rod (14) is fixed to the support leg (2), and the ring (13) slides up and down along the guide rod (14).

2. The automatic anti-sway device of a crane according to claim 1, characterized in that: The first fixed pulley (8), the second fixed pulley (9) and the third fixed pulley (10) are respectively rotatably connected to the fixed frame (5); the first fixed pulley (8) and the third fixed pulley (10) are located on the same horizontal line; and the second fixed pulley (9) is located between the first fixed pulley (8) and the third fixed pulley (10).

3. The automatic anti-sway device of a crane according to claim 1, characterized in that: The fixing frame (5) is fixed with a first protective cover (15) located at the upper half of the second fixed pulley (9), and the fixing frame (5) is fixed with a second protective cover (16) located at the lower half of the first fixed pulley (8) and the lower half of the third fixed pulley (10).

4. The automatic anti-sway device for a crane according to claim 1, characterized in that: A hook (17) is installed at the lower end of the fixing frame (5).

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