Lifting hook mounting structure of crane

Abstract

The utility model belongs to the field of mechanical hoisting, and particularly relates to a lifting hook mounting structure of a crane, which comprises a first pulley, a second pulley and a steel wire rope, the first pulley is mounted on the lifting arm and is positioned at one end, connected with the lifting hook, of the lifting arm; the second pulley is in contact with the first pulley and is far away from one end, connected with the lifting hook, of the lifting arm; one end of the steel wire rope is connected with the winch, bypasses between the first pulley and the second pulley, passes through the third pulley in the lifting hook, and is fixed in the lifting arm through the other side of the first pulley. Through the two pulleys arranged side by side, the steel wire ropes on the two sides are always separated by the first pulley when the suspension arm swings, and the steel wire ropes on the two sides synchronously deviate when the suspension arm moves, so that winding of the steel wire ropes is effectively avoided, normal operation is facilitated, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical hoisting, in particular to a hook mounting structure of a crane. Background Art

[0002] During the swinging process of the crane boom, the steel wire ropes of the multi-sheave pulley block are extremely prone to entanglement when approaching, which is not convenient for the normal operation of the crane and affects the working efficiency.

[0003] Chinese Patent CN210855056U discloses a boom crane with a new hoisting wire rope winding system. One end of the boom hoisting wire rope is connected to the hoisting mechanism, and the other end is fixed to the cross beam of the end section of the boom with a wire straightener and a rope locking device. An end pulley, a wire straightener and a rope locking device, and a swinging pulley frame are installed on the cross beam of the end section of the boom of the boom crane; the upper end of the swinging pulley frame is fixed at the middle position of the cross beam of the end section of the boom through a pin shaft, and the lower end is provided with an upper pulley mounting frame, and an upper pulley is installed in the upper pulley mounting frame; a lower pulley mounting splint is arranged below the swinging pulley frame; lower pulleys are symmetrically installed at both ends of the lower pulley mounting splint.

[0004] This patent realizes the prevention of wire rope jamming through structures such as an end pulley, a wire straightener and a rope locking device, and a swinging pulley frame. However, these devices will increase the burden on the system and consume more costs and resources. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a hook mounting structure of a crane that is simple in structure, low in cost, and can effectively avoid wire rope entanglement.

[0006] The technical solution adopted by the utility model to solve the technical problems is:

[0007] The utility model provides a hook mounting structure of a crane, including: a first pulley, a second pulley, and a wire rope; the first pulley is installed on the boom and is located at the end where the boom is connected to the hook; the second pulley is in contact with the first pulley and is away from the end where the boom is connected to the hook; one end of the wire rope is connected to a winch, bypasses between the first pulley and the second pulley, passes through a third pulley inside the hook, and is fixed inside the boom on the other side of the first pulley; when the boom extends outward from the starting state, the hook hangs inside the boom, and the wire rope passes through the top surface of the second pulley and extends between the first pulley and the second pulley to one side of the third pulley inside the hook, and the wire rope wound on the other side of the hook passes through the other side of the first pulley; when the boom contracts inward from the starting state, the hook gradually hangs outside the boom, the wire rope passes through the bottom surface of the second pulley between the first pulley and the second pulley, passes through the top surface of the first pulley, and extends to one side of the third pulley inside the hook, and the wire rope wound on the other side of the hook is directly connected to the boom.

[0008] Further, the boom has a first boom and a second boom. One end of the first boom is connected to the hook, and the other end is connected to the second boom. The other end of the second boom is installed on the base. The first pulley and the second pulley are both installed on the first boom connected to the hook. The winch is located at one end of the second boom close to the base and is installed on the top surface of the second boom.

[0009] Further, it further includes a first guiding pulley and a second guiding pulley. The first guiding pulley is located at one end of the first boom close to the second boom and is installed on the top surface of the first boom. The second guiding pulley is located at one end of the second boom close to the first boom and is installed on the top surface of the second boom.

[0010] Further, the first guiding pulley and the second guiding pulley are respectively installed on the first boom and the second boom through ear plates.

[0011] Further, the first pulley and the second pulley are of exactly the same model.

[0012] The advantages and positive effects of the present utility model are:

[0013] The present utility model adopts the first pulley and the second pulley arranged side by side. When the boom extends outward from the starting state, the steel wire ropes on both sides can synchronously shift to the right end. When the boom contracts inward from the starting state, the steel wire ropes on both sides can synchronously shift to the left end. When they move relative to each other, they always maintain a distance of one pulley, effectively preventing the steel wire ropes from approaching each other, avoiding entanglement and jamming, being beneficial to the normal operation of the work, and effectively improving the work efficiency. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the boom of the present utility model in the starting state;

[0015] Figure 2 is a partially enlarged schematic view of the boom of the present utility model in the starting state;

[0016] Figure 3 is a schematic structural view of the boom of the present utility model when extended;

[0017] Figure 4 is a partially enlarged schematic view of the boom of the present utility model when extended;

[0018] Figure 5 is a schematic structural view of the boom of the present utility model when contracted;

[0019] Figure 6 is a partially enlarged schematic view of the boom of the present utility model when contracted.

[0020] Among them, the above-mentioned drawings include the following reference numerals:

[0021] 1 - Boom; 101 - Outer side; 102 - Inner side; 11 - First boom; 12 - Second boom; 2 - First pulley; 3 - Second pulley; 4 - Steel wire rope; 5 - Winch; 6 - Hook; 61 - Third pulley; 7 - First guiding pulley; 8 - Second guiding pulley; 9 - Ear plate. Detailed implementation manners

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0025] As Figures 1-6 shown, the present utility model provides a hook mounting structure for a crane, including: a first pulley 2, a second pulley 3, and a steel wire rope 4.

[0026] As Figure 1 shown, the first pulley 2 is mounted on the boom 1 and is located at the end where the boom 1 is connected to the hook 6; the second pulley 3 is in contact with the first pulley 2 and is away from the end where the boom 1 is connected to the hook 6; one end of the steel wire rope 4 is connected to the winch 5, bypasses between the first pulley 2 and the second pulley 3, passes through the third pulley 61 inside the hook 6, and is fixed inside the boom 1 through the other side of the first pulley 2. With the two pulleys arranged side by side in the present utility model, the first pulley 2 always separates the steel wire ropes 4 on both sides when the boom 1 swings, and the steel wire ropes 4 on both sides shift synchronously when the boom 1 moves, effectively avoiding the entanglement of the steel wire ropes 4, facilitating the normal operation of the work, and effectively improving the work efficiency.

[0027] As Figure 1, Figure 3 , Figure 5 As shown in Figure 3 and Figure 5 , the boom 1 has a first boom 11 and a second boom 12. One end of the first boom 11 is connected to the hook 6, and the other end is connected to the second boom 12. And the other end of the second boom 12 is installed on the base. The first pulley 2 and the second pulley 3 are both installed on the first boom 11 connected to the hook 6. The winch 5 is located at one end of the second boom 12 close to the base and is installed on the top surface of the second boom 12. By setting the first boom 11 and the second boom 12, the present utility model is beneficial to realize better movement and operation of the crane, increase the working range, and realize the normal work of the crane.

[0028] In order to facilitate the guiding of the steel wire rope 4, the first guiding pulley 7 is located at one end of the first boom 11 close to the second boom 12 and is installed on the top surface of the first boom 11. The second guiding pulley 8 is located at one end of the second boom 12 close to the first boom 11 and is installed on the top surface of the second boom 12. Specifically, the installation methods of the first guiding pulley 7 and the second guiding pulley 8 can be respectively installed on the first boom 11 and the second boom 12 through the ear plates 9. In addition, the models of the first pulley 2 and the second pulley 3 are exactly the same.

[0029] The using method of the present utility model is as follows:

[0030] As Figures 3-4 shown, when the boom 1 extends outward from the starting state, the hook 6 hangs down inside the boom 1 at 102. The steel wire rope 4 passes through the top surface of the second pulley 3, extends between the first pulley 2 and the second pulley 3, and reaches one side of the third pulley 61 inside the hook 6. The steel wire rope 4 on the other side of the hook 6 passes through the other side of the first pulley 2; As Figures 5-6 shown, when the boom 1 contracts inward from the starting state, the hook 6 gradually hangs down outside the boom 1 at 101. The steel wire rope 4 passes through the bottom surface of the second pulley 3, passes between the first pulley 2 and the second pulley 3, passes through the top surface of the first pulley 2, and extends to one side of the third pulley 61 inside the hook 6. The steel wire rope 4 on the other side of the hook 6 is directly connected to the boom 1.

[0031] The present utility model adopts the first pulley 2 and the second pulley 3 arranged side by side. When the boom 1 extends outward from the starting state, the steel wire ropes 4 on both sides can synchronously shift to the right end. When the boom 1 contracts inward from the starting state, the steel wire ropes 4 on both sides can synchronously shift to the left end. When they move relative to each other, they always maintain a distance of one pulley, effectively preventing the steel wire ropes 4 from approaching each other, avoiding winding and jamming, being beneficial to the normal operation of the work, and effectively improving the work efficiency.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hook mounting structure of a crane, characterized in that Including: A first pulley (2), which is installed on the boom (1) and is located at one end where the boom (1) is connected to the hook (6); A second pulley (3), which is in contact with the first pulley (2) and is away from the end where the boom (1) is connected to the hook (6); A steel wire rope (4), one end of which is connected to a winch (5), passes around between the first pulley (2) and the second pulley (3), passes through a third pulley (61) inside the hook (6), and is fixed inside the boom (1) on the other side of the first pulley (2); When the boom (1) extends outward from the starting state, the hook (6) hangs inside the boom (1) on the inner side (102), and the steel wire rope (4) passes through the top surface of the second pulley (3) and extends between the first pulley (2) and the second pulley (3) to one side of the third pulley (61) inside the hook (6). The steel wire rope (4) wound around the other side of the hook (6) passes through the other side of the first pulley (2). When the boom (1) contracts inward from the starting state, the hook (6) gradually hangs outside the boom (1) on the outer side (101), and the steel wire rope (4) passes through the bottom surface of the second pulley (3) between the first pulley (2) and the second pulley (3), passes through the top surface of the first pulley (2), and extends to one side of the third pulley (61) inside the hook (6). The steel wire rope (4) wound around the other side of the hook (6) is directly connected to the boom (1).

2. The hook mounting structure of the crane according to claim 1, characterized in that, The boom (1) has a first boom (11) and a second boom (12). One end of the first boom (11) is connected to the hook (6), and the other end is connected to the second boom (12). And the other end of the second boom (12) is installed on the base. The first pulley (2) and the second pulley (3) are both installed on the first boom (11) connected to the hook (6). The winch (5) is located at one end of the second boom (12) close to the base and is installed on the top surface of the second boom (12).

3. The hook mounting structure of the crane according to claim 2, characterized in that, It further includes a first guide pulley (7) and a second guide pulley (8). The first guide pulley (7) is located at one end of the first boom (11) close to the second boom (12) and is installed on the top surface of the first boom (11). The second guide pulley (8) is located at one end of the second boom (12) close to the first boom (11) and is installed on the top surface of the second boom (12).

4. The hook mounting structure of the crane according to claim 3, characterized in that, The first guide pulley (7) and the second guide pulley (8) are respectively installed on the first boom (11) and the second boom (12) through ear plates (9).

5. The hook mounting structure of the crane according to claim 4, characterized in that, The first pulley (2) and the second pulley (3) have exactly the same model.

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