Lifting hook for tower crane

Abstract

The utility model relates to the technical field of lifting hooks, in particular to a lifting hook for a tower crane, which comprises a vertical rod, a hook is fixedly mounted at the bottom end of the vertical rod, a fixed block is fixedly connected to the outer wall of one end, close to the hook, of the vertical rod, a stop lever is connected to one end of the fixed block, and a movable rod is slidably connected to one end, away from the fixed block, of the stop lever; a rack is installed on the outer wall of the moving rod, and the surface of the rack is connected with a gear in an engaged mode. A stop lever is installed at one end of a fixing block, a lifting rope on a hook can be conveniently limited, a gear and a rack are connected in a meshed mode, when a handle is rotated to drive the gear to rotate, a movable rod can move in the stop lever, one end of the movable rod is slidably inserted into a connecting sleeve, and a limiting rod is inserted into a limiting groove of the movable rod, so that the lifting rope on the hook is conveniently limited. The movable rod can be limited, so that the movable rod is not prone to being separated from the connecting sleeve, the hook and the lifting rope are not prone to being unhooked, a lifted object is prevented from falling off, and certain potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hooks, in particular to a hook for a tower crane. Background Technique

[0002] A tower crane is a rotating crane with a boom installed on the upper part of a tall tower body. It is mainly used for the vertical transportation of materials and the installation of components in multi-story and high-rise building construction. It consists of three parts: a metal structure, a working mechanism, and an electrical system. The metal structure includes a tower body, a boom, a base, an attachment rod, etc. The working mechanism has four parts: hoisting, luffing, slewing, and traveling. The electrical system includes motors, controllers, distribution boxes, connecting lines, signal and lighting devices, etc.

[0003] In the prior art, after hanging the lifting rope of the lifted object on the hook of the tower crane, the lifted object can be lifted by the tower crane. However, the existing hook for the tower crane and the lifting rope are prone to unhooking, resulting in the falling of the lifted object and posing a certain safety hazard. For this reason, we propose a hook for a tower crane. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hook for a tower crane to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hook for a tower crane, comprising: a vertical rod, a hook is fixedly installed at the bottom end of the vertical rod, a fixing block is fixedly connected to the outer wall of the vertical rod near the hook, a retaining rod is connected to one end of the fixing block, and a moving rod is slidably connected to the end of the retaining rod away from the fixing block;

[0006] A rack is installed on the outer wall of the moving rod, a gear is meshed with the surface of the rack, and a handle is fixedly installed on the rotating shaft at one end of the gear;

[0007] A connecting sleeve is installed on the inner wall of the hook near the moving rod, a limiting rod is slidably installed on the outer wall of the connecting sleeve, and a limiting groove is opened on the outer wall of the moving rod near the limiting rod.

[0008] Preferably, an installation part is fixedly installed at one end of the fixing block, a connecting part is fixedly installed at one end of the retaining rod near the installation part, the cross-section of the installation part is U-shaped, and the connecting part and the inner wall of the installation part are rotatably connected.

[0009] Preferably, a moving groove is opened at the end of the retaining rod away from the fixing block, a transmission groove is opened on the inner wall of the moving groove near the rack, a communication hole is connected to the end of the transmission groove near the gear, and the inner wall of the transmission groove does not contact the rack.

[0010] Preferably, an installation groove is formed in the outer wall of the moving rod close to the rack, and one end of the rack away from the gear is fixedly installed on the inner wall of the installation groove.

[0011] Preferably, a protective cover is fixedly installed on the outer wall of the stop rod close to the gear. One end of the rotating shaft of the gear close to the handle penetrates through the protective cover and extends to the outside of the protective cover, and the other end of the rotating shaft of the gear is rotatably installed on the inner wall of the protective cover.

[0012] Preferably, a spring is sleeved on the outer portion of the limiting rod. One end of the spring is fixedly installed on the outer wall of the limiting sleeve, and the other end of the spring is fixedly installed on the end of the limiting rod away from the limiting groove.

[0013] Preferably, one end of the connecting sleeve is fixedly installed on the hook, and the inner wall of the other end of the connecting sleeve is slidably connected to the outer wall of the moving rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By means of the stop rod installed at one end of the fixing block, the present utility model facilitates the limitation of the lifting rope on the hook. Through the meshing connection of the gear and the rack, when the handle is rotated to drive the gear to rotate, the moving rod can move within the stop rod, so that one end of the moving rod slides into the connecting sleeve. By inserting the limiting rod into the limiting groove of the moving rod, the moving rod can be limited, so that the moving rod is not easily separated from the connecting sleeve, and further, the situation of the hook and the lifting rope being disengaged is not likely to occur, preventing the lifted object from falling and avoiding certain potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is the present utility model Figure 1 the enlarged schematic diagram of the structure at A in;

[0018] Figure 3 is a three-dimensional schematic diagram of the partial structure of the present utility model;

[0019] Figure 4 is a three-dimensional sectional view schematic diagram of the stop rod structure of the present utility model;

[0020] Figure 5 is a three-dimensional schematic diagram inside the stop rod structure of the present utility model.

[0021] In the figure: 1, vertical rod; 2, hook; 3, connecting sleeve; 4, stop rod; 5, limiting groove; 6, limiting rod; 7, spring; 8, fixing block; 9, mounting member; 10, moving groove; 11, moving rod; 12, rack; 13, installation groove; 14, communication hole; 15, gear; 16, protective cover; 17, handle; 18, connecting member; 19, transmission groove. Detailed implementation manners

[0022] In order to clearly and completely describe the objectives, technical solutions of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, and are not used to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is 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 therefore cannot be understood as a limitation of the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily complicating these embodiments. Additionally, all embodiments can be used in combination with each other.

[0026] Please refer to Figures 1 to 5, the present utility model provides a technical solution: a hook for a tower crane, comprising: a vertical rod (1), a hook (2) is fixedly installed at the bottom end of the vertical rod (1), a fixed block (8) is fixedly connected to the outer wall of the vertical rod (1) near the hook (2), one end of the fixed block (8) is connected to a stop rod (4), and the end of the stop rod (4) away from the fixed block (8) is slidably connected to a moving rod (11); one end of the fixed block (8) is fixedly installed with a mounting member (9), one end of the stop rod (4) near the mounting member (9) is fixedly installed with a connecting member (18), the cross-section of the mounting member (9) is U-shaped, and the inner wall of the connecting member (18) and the mounting member (9) are rotatably connected, facilitating the rotation to adjust the position of the stop rod 4.

[0027] A rack (12) is installed on the outer wall of the moving rod (11), a gear (15) is meshed with the surface of the rack (12), and a handle (17) is fixedly installed at one end of the rotating shaft of the gear (15); a moving groove (10) is opened at the end of the stop rod (4) away from the fixed block (8), a transmission groove (19) is opened on the inner wall of the moving groove (10) near the rack (12), a communication hole (14) is connected and communicated at one end of the transmission groove (19) near the gear (15), and the inner wall of the transmission groove (19) does not contact the rack (12), facilitating the movement of the rack 12 in the moving groove 10 and the transmission groove 19, and facilitating the movement of the rack 12 driven by the rotation of the gear 15. An installation groove (13) is opened on the outer wall of the moving rod (11) near the rack (12), and the end of the rack (12) away from the gear (15) is fixedly installed on the inner wall of the installation groove (13), facilitating the movement of the moving rod 11 driven by the movement of the rack 12. A protective cover (16) is fixedly installed on the outer wall of the stop rod (4) near the gear (15), the rotating shaft at one end of the gear (15) near the handle (17) penetrates through the protective cover (16) and extends out of the outside of the protective cover (16), and the rotating shaft at the other end of the gear (15) is rotatably installed on the inner wall of the protective cover (16), facilitating the protection of the gear 15.

[0028] A connecting sleeve (3) is installed on the inner wall of the hook (2) near the moving rod (11), a limiting rod (6) is slidably installed on the outer wall of the connecting sleeve (3), and a limiting groove (5) is opened on the outer wall of the moving rod (11) near the limiting rod (6). A spring (7) is sleeved on the outside of the limiting rod (6), one end of the spring (7) is fixedly installed on the outer wall of the limiting sleeve (3), and the other end of the spring (7) is fixedly installed at the end of the limiting rod (6) away from the limiting groove (5), facilitating the limitation of the limiting rod 6 so that it is not easily separated from the limiting groove 5. One end of the connecting sleeve (3) is fixedly installed on the hook (2), and the inner wall of the other end of the connecting sleeve (3) is slidably connected to the outer wall of the moving rod (11), facilitating the cooperation with the moving rod 11 to realize the limiting function of the lifting rope.

[0029] When the device is working, the lifting rope of the lifted object is hung on the hook 2. At this time, the moving rod 11 is located inside the stop rod 4. Through the stop rod 4 installed at one end of the fixing block 8, the stop rod 4 can be rotated to make it close to the connecting sleeve 3, which is convenient for limiting the lifting rope on the hook 2. Through the meshing connection of the gear 15 and the rack 12, when the handle 17 is rotated to drive the gear 15 to rotate, the moving rod 11 can move inside the stop rod 4, so that one end of the moving rod 11 slides into the connecting sleeve 3. By inserting the limiting rod 6 into the limiting groove 5 of the moving rod 11, under the elastic action of the spring 7, the limiting effect of the limiting rod 6 on the moving rod 11 can be strengthened, so that the moving rod 11 is not easily separated from the connecting sleeve, and then it is not easy for the hook 2 and the lifting rope to be unhooked, preventing the lifted object from falling and avoiding certain safety hazards.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood 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 hook for a tower crane, comprising: A vertical rod (1), a curved hook (2) is fixedly mounted on the bottom end of the vertical rod (1), characterized in that: a fixed block (8) is fixedly connected to the outer wall of one end of the vertical rod (1) close to the curved hook (2), one end of the fixed block (8) is connected to a stop rod (4), and one end of the stop rod (4) away from the fixed block (8) is slidably connected to a moving rod (11); A rack (12) is mounted on the outer wall of the moving rod (11), a gear (15) is meshingly connected to the surface of the rack (12), and a handle (17) is fixedly mounted on a rotating shaft at one end of the gear (15); A connecting sleeve (3) is installed on the inner wall of the curved hook (2) close to the moving rod (11), a limiting rod (6) is slidably installed on the outer wall of the connecting sleeve (3), and a limiting groove (5) is provided on the outer wall of the moving rod (11) close to the limiting rod (6).

2. A tower crane hook according to claim 1, characterized in that: A mounting piece (9) is fixedly mounted on one end of the fixing block (8), and a connecting piece (18) is fixedly mounted on one end of the blocking rod (4) close to the mounting piece (9); the cross section of the mounting piece (9) is U-shaped, and the connecting piece (18) is rotatably connected to the inner wall of the mounting piece (9).

3. A tower crane hook according to claim 1, characterized in that: A movable groove (10) is formed at one end of the blocking rod (4) away from the fixed block (8); a transmission groove (19) is formed on the inner wall of the movable groove (10) close to the rack (12); an end of the transmission groove (19) close to the gear (15) is connected to a connecting hole (14), and the inner wall of the transmission groove (19) does not contact the rack (12).

4. A hook for a tower crane according to claim 1, characterized in that: A mounting groove (13) is provided on the outer wall of the moving rod (11) close to the rack (12), and an end of the rack (12) away from the gear (15) is fixedly mounted on the inner wall of the mounting groove (13).

5. A hook for a tower crane according to claim 1, characterized in that: A protective cover (16) is fixedly mounted on the outer wall of the blocking rod (4) close to the gear (15); a rotating shaft at one end of the gear (15) close to the handle (17) penetrates the protective cover (16) and extends out of the protective cover (16); and a rotating shaft at the other end of the gear (15) is rotatably mounted on the inner wall of the protective cover (16).

6. A hook for a tower crane according to claim 1, characterized in that: The outer sleeve of the limiting rod (6) is provided with a spring (7), one end of the spring (7) is fixedly mounted on the outer wall of the connecting sleeve (3), and the other end of the spring (7) is fixedly mounted on the end of the limiting rod (6) away from the limiting groove (5).

7. A tower crane hook according to claim 1, characterized in that: One end of the connecting sleeve (3) is fixedly mounted on the bent hook (2), and the inner wall of the other end of the connecting sleeve (3) is slidably connected to the outer wall of the moving rod (11).

Images