A tower crane hook with convenient replacement

Abstract

This utility model discloses a tower crane hook that is easy to replace, mainly relating to the field of tower crane hook technology. It includes a tower crane body and an adjusting device. A lifting arm is rotatably connected to the upper end of the tower crane body. A winch is mounted on the lower surface of the lifting arm, and a wire rope body is housed inside the winch. A hook body is mounted on the bottom end of the wire rope body via the adjusting device. The adjusting device includes a fixing column, the upper end of which is fixedly connected to the bottom end of the wire rope body. A connecting column is rotatably connected to the upper end of the hook body. The beneficial effect of this utility model is that it solves the problem that after prolonged operation of tower cranes in construction, the hook in the tower crane equipment is prone to deformation or cracking under high loads, resulting in uneven load on the tower crane, which in turn increases wear on other key components and shortens the overall service life of the tower crane.

Description

Technical Field

[0001] This utility model relates to the field of tower crane hook technology, and in particular to a tower crane hook that is easy to replace. Background Technology

[0002] Tower cranes are important lifting equipment commonly used on construction sites, responsible for lifting heavy objects to high altitudes. However, the hook, as the core component of the tower crane, operates under extremely harsh conditions, enduring high loads, frequent use, and harsh environments for extended periods, making it a common feature in construction processes.

[0003] Existing technologies, such as the utility model patent with publication number CN214780260U, disclose a tower crane hook that is easy to replace. This patent includes a connecting seat, a load-bearing box installed at the bottom of the connecting seat, a hook installed at the bottom of the load-bearing box, a connecting shaft installed on the inner side of the hook near its top, a sealing rod installed on the outer side of the connecting shaft, grooves on both sides of the inner wall of the load-bearing box, sliders installed on the outer sides of both sets of grooves, a limiting plate installed between the two sets of sliders, a spring installed at the bottom of the limiting plate, alarms installed on both sides of the bottom of the inner wall of the load-bearing box, a fixing plate installed at the bottom of the spring, and lifting rings extending through both sides of the connecting seat, with limit plates installed at both ends of the lifting rings. This utility model, a tower crane hook that is easy to replace, adds an alarm structure to alert workers to overloading situations, thereby improving safety and simplifying the connecting components, facilitating subsequent replacement and maintenance of the hook.

[0004] During construction, it was found that after prolonged operation of tower cranes, the hooks of the tower cranes, working under high loads for extended periods, are prone to deformation or cracking. This leads to uneven load distribution on the tower crane, which in turn increases wear on other critical components and shortens the overall lifespan of the tower crane.

[0005] This application provides a technical solution to the technical problem, aiming to provide those skilled in the art with a variety of solutions to the problem. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies where, after prolonged operation of tower cranes in construction, the hooks of the tower cranes are subjected to high loads for extended periods, which can easily lead to deformation or cracks, resulting in uneven load distribution on the tower crane. This, in turn, increases the wear and tear on other critical components and shortens the overall service life of the tower crane.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a tower crane hook that is easy to replace, comprising a tower crane body and an adjusting device. A lifting arm is rotatably connected to the upper end of the tower crane body. A winch is installed on the lower surface of the lifting arm. A wire rope body is installed inside the winch. A hook body is installed at the bottom end of the wire rope body via the adjusting device. The adjusting device includes a fixed column, the upper end of which is fixedly connected to the bottom end of the wire rope body. A connecting column is rotatably connected to the upper end of the hook body. An adjusting ring is fixedly connected to the arc surface of the fixed column. A connecting groove is provided on one side of the adjusting ring. A fixed ring is rotatably connected to the arc surface of the inner wall of the adjusting ring. The fixed ring has a "C" shaped cross-section. A connecting block is fixedly connected to the arc surface of the upper end of the connecting column. An inlay hole is provided on the inner wall surface of the connecting block. The surface of the connecting block is inserted into the inner wall of the connecting groove. The inner wall of the inlay hole slides through the surface of the fixed ring.

[0008] The effect achieved by the above components is as follows: During the long-term and efficient operation of the tower crane in construction, the lifting operation will be carried out by the hook body set at the bottom of the wire rope body. At this time, the hook body can be replaced and limited by the adjustment device, and the fixed column and the docking column are docked and limited. The inlay hole opened on the inner wall surface of the connecting block and the fixed ring can rotate and slide through, which can quickly fix the replaced hook body for use.

[0009] Preferably, a locking block is fixedly connected to the bottom surface of the fixing column, the locking block has a triangular cross-section, and a locking groove is formed on the upper surface of the docking column, the inner wall of the locking groove is inserted into the surface of the locking block.

[0010] The effect achieved by the above components is that when limiting the positioning of the fixed column and the docking column, the triangular-shaped locking block and the locking groove can be used to prevent the fixed column and the docking column from deflecting or loosening.

[0011] Preferably, the lower surface of the adjusting ring is provided with a sliding groove, and a sliding rod is slidably connected to the inner wall of the sliding groove. The upper end of the sliding rod is fixedly connected to the lower surface of the fixing ring.

[0012] The effect achieved by the above components is that, by means of sliding between the slide rod and the slide groove, the rotational position of the fixed ring can be precisely controlled and limited.

[0013] Preferably, a side plate is fixedly connected to one side of the arc surface of the docking column, a movable rod is slidably passed through the surface of the side plate, a positioning block is fixedly connected to one end of the movable rod near the fixed ring, the cross-sectional dimensions of the positioning block are adapted to the cross-sectional dimensions of the fixed ring notch with a "C" shape, a spring is sleeved on the surface of the movable rod, and the two ends of the spring are fixedly connected to the side plate and the positioning block respectively.

[0014] The effect achieved by the above components is that after the position of the fixing ring is adjusted, it can be inserted with the help of the positioning block that slides on the side plate surface, which helps to further limit and protect the position of the fixing ring.

[0015] Preferably, the long arm pad surface of the hook body is provided with an auxiliary device, which includes two connecting rods. The two connecting rods are respectively located on both sides of the long arm end of the hook body. One end of the connecting rod is fixedly connected to the hook body. The arc surfaces of the two connecting rods are rotatably connected to the same rotating plate. The inner wall of one end of the rotating plate is inserted into the sharp end surface of the hook body. A pressing shaft is threaded through the side wall surface of the rotating plate. A protective hole is opened on the sharp end side wall surface of the hook body. The inner wall of the protective hole is inserted into one end of the pressing shaft.

[0016] The effect achieved by the above-mentioned components is as follows: In order to prevent the goods lifted by the hook body from falling off during the operation and use of the hook body, the rotating plate in the auxiliary device can be used for protection. The extrusion shaft with thread through one end of the rotating plate is inserted and limited by the protective hole opened on the side wall of the sharp end of the hook body, which helps to quickly and conveniently operate and use the hook body.

[0017] Preferably, the arc surface of the connecting rod is fitted with a coil spring, and the two ends of the coil spring are fixedly connected to the rotating plate and the connecting rod, respectively.

[0018] The effect achieved by the above components is that the torsional force generated by the coil spring can squeeze and limit the position of the rotating plate, preventing the rotating plate from shaking during use.

[0019] Preferably, the lower surface of the rotating plate is provided with a plurality of auxiliary grooves, and the plurality of auxiliary grooves are evenly distributed on the lower surface of the rotating plate.

[0020] The effect achieved by the above-mentioned components is that when the rotating plate is flipped and fixed in a limited position, the auxiliary groove on the lower surface of the rotating plate can increase friction, which helps to further protect the hook body.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] In this invention, by operating the adjustment device, the hook body of the tower crane can be replaced and limited. The fixed column at the bottom of the wire rope is connected and limited by the rotating docking column at the top of the hook body. The rotating fixed ring slides through the inlay hole in the inner wall of the connecting block, thereby effectively fixing and protecting the entire fixed column and docking column, and enabling convenient replacement of the entire hook body.

[0023] In this utility model, by operating the auxiliary device, the protection of the goods being lifted during the operation of the hook body is achieved, preventing the goods from falling off. At this time, the adjustment can be made by using the rotating plate set on one side of the hook body surface. The extrusion shaft with threads through one side of the rotating plate is inserted and limited to one end surface of the hook body, so that the entire hook body and the rotating plate can be in a closed state, which helps to protect the hook body during use. Attached Figure Description

[0024] Appendix Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Appendix Figure 2 This is a schematic diagram of the structure of the adjustment device of this utility model;

[0026] Appendix Figure 3 This is a partial structural schematic diagram of the adjustment device of this utility model;

[0027] Appendix Figure 4 This is a schematic diagram of the auxiliary device structure of this utility model.

[0028] The following are the labels in the attached diagram: 1. Tower crane body; 2. Winch; 3. Wire rope body; 4. Adjusting device; 401. Fixed column; 402. Connecting column; 403. Adjusting ring; 404. Fixed ring; 405. Connecting groove; 406. Connecting block; 407. Embedding hole; 408. Side plate; 409. Moving rod; 410. Spring; 411. Positioning block; 412. Slide groove; 413. Slide rod; 414. Locking block; 415. Locking groove; 5. Auxiliary device; 51. Connecting rod; 52. Rotating plate; 53. Auxiliary groove; 54. Coil spring; 55. Extrusion shaft; 56. Protective hole; 6. Hook body. Detailed Implementation

[0029] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0030] Reference Figures 1 to 4 As shown, this utility model provides a technical solution: a tower crane hook that is easy to replace, including a tower crane body 1 and an adjustment device 4. The upper end of the tower crane body 1 is rotatably connected to a lifting arm, and a winch 2 is provided on the lower surface of the lifting arm. A wire rope body 3 is provided inside the winch 2. A hook body 6 is installed at the bottom end of the wire rope body 3 with the help of the adjustment device 4. An auxiliary device 5 is provided on the long arm pad surface of the hook body 6.

[0031] The specific settings and functions of its adjustment device 4 and auxiliary device 5 will be explained in detail below.

[0032] Reference Figure 2 , Figure 3 As shown in this embodiment: the adjusting device 4 includes a fixed column 401, the upper end of which is fixedly connected to the bottom end of the wire rope body 3; a docking column 402 is rotatably connected to the upper end of the hook body 6; an adjusting ring 403 is fixedly connected to the arc surface of the fixed column 401; a connecting groove 405 is provided on one side of the adjusting ring 403; a fixed ring 404 is rotatably connected to the arc surface of the inner wall of the adjusting ring 403; the fixed ring 404 has a "C" shaped cross section; a connecting block 406 is fixedly connected to the arc surface of the upper end of the docking column 402; an inlay hole 407 is provided on the inner wall surface of the connecting block 406; the surface of the connecting block 406 is inserted into the inner wall of the connecting groove 405; the inner wall of the inlay hole 407 slides through the surface of the fixed ring 404; and a locking block 414 is fixedly connected to the bottom surface of the fixed column 401. The cross-section of the 4 is triangular. The upper surface of the docking post 402 is provided with a slot 415. The inner wall of the slot 415 is inserted into the surface of the block 414. The lower surface of the adjusting ring 403 is provided with a sliding groove 412. The inner wall of the sliding groove 412 is slidably connected to a sliding rod 413. The upper end of the sliding rod 413 is fixedly connected to the lower surface of the fixing ring 404. A side plate 408 is fixedly connected to one side of the arc surface of the docking post 402. A moving rod 409 slides through the surface of the side plate 408. A positioning block 411 is fixedly connected to one end of the moving rod 409 near the fixing ring 404. The cross-sectional dimensions of the positioning block 411 are adapted to the cross-sectional dimensions of the notch of the fixing ring 404, which has a "C" shaped cross-section. A spring 410 is sleeved on the surface of the moving rod 409. The two ends of the spring 410 are fixedly connected to the side plate 408 and the positioning block 411, respectively.

[0033] Reference Figure 4 As shown in this embodiment: the auxiliary device 5 includes two connecting rods 51, which are located on both sides of the long arm end of the hook body 6. One end of the connecting rod 51 is fixedly connected to the hook body 6. The arc surfaces of the two connecting rods 51 are rotatably connected to the same rotating plate 52. The inner wall of one end of the rotating plate 52 is inserted into the sharp end surface of the hook body 6. The side wall surface of the rotating plate 52 is threaded with a pressing shaft 55. The side wall surface of the sharp end of the hook body 6 is provided with a protective hole 56. The inner wall of the protective hole 56 is inserted into one end of the pressing shaft 55. The arc surface of the connecting rod 51 is fitted with a coil spring 54. The two ends of the coil spring 54 are fixedly connected to the rotating plate 52 and the connecting rod 51, respectively. The lower surface of the rotating plate 52 is provided with a number of auxiliary grooves 53, which are evenly distributed on the lower surface of the rotating plate 52.

[0034] Detailed Instructions for Use: When operating the tower crane body 1, the winch 2 installed on one end of the boom of the tower crane body 1 will drive the wire rope body 3 to stretch and contract, thereby allowing the hook body 6 fixed at one end of the wire rope body 3 to lift the goods. After prolonged use, the hook body 6 can be replaced and limited using the adjustment device 4. The replaced hook body 6 is inserted and limited by the upper rotating fixed docking column 402 and the lower fixed column 401 of the wire rope body 3. The fixed ring 404 inside the adjusting ring 403 is rotated so that the "C" opening of the fixed ring 404 is positioned at the connecting groove 405 on the surface of the adjusting ring 403. Then, the connecting block 406 is inserted into the connecting groove 405, allowing the inlay hole 407 on the inner wall of the connecting block 406 to slide through the fixed ring 404. At this time, the entire fixed column 401 and docking column 402 are connected. With the position relatively fixed, the moving rod 409 on the surface of the side plate 408 is pulled. With the squeezing force generated by the spring 410, the positioning block 411 fixed at one end of the moving rod 409 will engage with the "C" opening of the fixing ring 404. At this time, the position of the entire fixing ring 404 will be unable to rotate or slide, further fixing and protecting the position of the entire hook body 6. During the hoisting process of the hook body 6, the auxiliary device 5 can be used to prevent the hook body 6 from detaching. The rotating plate 52 on one side of the hook body 6 is flipped so that the inner wall of one end of the rotating plate 52 engages with the sharp end of the hook body 6. At the same time, the extrusion shaft 55 threaded through one side of the rotating plate 52 is rotated so that the extrusion shaft 55 is inserted into the protective hole 56. At this time, the position of the entire rotating plate 52 will be fixed, which can be used to prevent the hook body 6 from detaching during use.

Claims

1. A tower crane hook that is easy to replace, comprising a tower crane body (1) and an adjusting device (4), characterized in that: The upper end of the tower crane body (1) is rotatably connected to a lifting arm. A winch (2) is installed on the lower surface of the lifting arm. A wire rope body (3) is installed inside the winch (2). A hook body (6) is installed at the bottom end of the wire rope body (3) via an adjusting device (4). The adjusting device (4) includes a fixed column (401). The upper end of the fixed column (401) is fixedly connected to the bottom end of the wire rope body (3). A connecting column (402) is rotatably connected to the upper end of the hook body (6). An adjusting ring is fixedly connected to the arc surface of the fixed column (401). 403), a connecting groove (405) is provided on one side of the adjusting ring (403), a fixed ring (404) is rotatably connected to the inner arc surface of the adjusting ring (403), the cross section of the fixed ring (404) is "C" shaped, a connecting block (406) is fixedly connected to the upper arc surface of the docking column (402), an inlay hole (407) is provided on the inner wall surface of the connecting block (406), the surface of the connecting block (406) is inserted into the inner wall of the connecting groove (405), and the inner wall of the inlay hole (407) slides through the surface of the fixed ring (404).

2. The tower crane hook that is easy to replace according to claim 1, characterized in that: A locking block (414) is fixedly connected to the bottom surface of the fixed column (401). The cross-section of the locking block (414) is triangular. A slot (415) is opened on the upper surface of the docking column (402). The inner wall of the slot (415) is inserted into the surface of the locking block (414).

3. The tower crane hook that is easy to replace according to claim 1, characterized in that: The lower surface of the adjusting ring (403) is provided with a sliding groove (412), and a sliding rod (413) is slidably connected to the inner wall of the sliding groove (412). The upper end of the sliding rod (413) is fixedly connected to the lower surface of the fixing ring (404).

4. The tower crane hook that is easy to replace according to claim 1, characterized in that: A side plate (408) is fixedly connected to one side of the arc surface of the docking column (402). A moving rod (409) slides through the surface of the side plate (408). A positioning block (411) is fixedly connected to one end of the moving rod (409) near the fixing ring (404). The cross-sectional dimensions of the positioning block (411) are adapted to the cross-sectional dimensions of the notch of the fixing ring (404) which has a "C" shaped cross-section. A spring (410) is sleeved on the surface of the moving rod (409). The two ends of the spring (410) are fixedly connected to the side plate (408) and the positioning block (411) respectively.

5. A tower crane hook that is easy to replace according to claim 1, characterized in that: An auxiliary device (5) is provided on the long arm pad surface of the hook body (6). The auxiliary device (5) includes two connecting rods (51). The two connecting rods (51) are located on both sides of the long arm end of the hook body (6). One end of the connecting rod (51) is fixedly connected to the hook body (6). The arc surfaces of the two connecting rods (51) are rotatably connected to the same rotating plate (52). The inner wall of one end of the rotating plate (52) is inserted into the sharp end surface of the hook body (6). The side wall surface of the rotating plate (52) is threaded with a pressing shaft (55). A protective hole (56) is opened on the sharp end side wall surface of the hook body (6). The inner wall of the protective hole (56) is inserted into one end of the pressing shaft (55).

6. A tower crane hook that is easy to replace according to claim 5, characterized in that: The arc surface of the connecting rod (51) is fitted with a coil spring (54), and the two ends of the coil spring (54) are fixedly connected to the rotating plate (52) and the connecting rod (51) respectively.

7. A tower crane hook that is easy to replace according to claim 5, characterized in that: The lower surface of the rotating plate (52) is provided with a plurality of auxiliary grooves (53), which are evenly distributed on the lower surface of the rotating plate (52).

Images