Marine crane hook structure

Abstract

The utility model relates to a lifting hook structure of a marine crane and belongs to the technical field of lifting hooks of cranes. The marine crane hook structure comprises a supporting seat, a connecting block and a hook body, the anti-falling mechanism comprises an anti-falling plate hinged to the interior of the connecting block, a sliding pipe is arranged in the lifting hook body, a positioning block is fixedly connected to the surface of the sliding pipe, and an adjusting plate is arranged between the positioning block and the anti-falling plate; the positioning block is arranged in the lifting hook body and matched with the adjusting rod to drive the anti-disengaging plate, the induction block is matched with the driving block and the sliding pipe to drive the positioning block, the lifting appliance enables the sliding pipe to drive the positioning block to move along the interior of the lifting hook body under the gravity effect, and therefore the adjusting plate is driven to drive the anti-disengaging block to be closed; the automatic closing of the anti-falling block can be completed without operating the lifting hook by a worker, so that the lifting speed is increased while the workload of the worker is reduced, and the purpose of improving the working efficiency is achieved.

Description

Technical Field

[0001] This utility model relates to the field of crane hook technology, and in particular to a hook structure for a marine crane. Background Technology

[0002] A marine crane is a lifting device specifically designed for ships, used for loading and unloading cargo. Its structure typically includes a boom, hook, ropes or chains, and a hydraulic system, capable of withstanding heavy loads and harsh conditions in the marine environment. To make hook operations more convenient for workers, a specific marine crane hook structure is required.

[0003] As shown in the reference case "A Crane Hook" announcement number "CN220618137U", this utility model solves the problems of insufficient protection of traditional spring-type structures, lack of dual anti-detachment protection function, and inability to quickly remove the traction rope from the hook after transporting goods to the designated location by setting up a hook body, anti-detachment plate, anti-detachment protection rod, screw, spring, and limit block.

[0004] Although the aforementioned application uses a screw to drive a protective rod to adjust the angle of the anti-detachment plate, thereby protecting the lifting device inside the hook and preventing it from falling off due to hook swaying, this mechanism requires repeated rotation of the handle to adjust the anti-detachment plate during the operation of the lifting device inside the hook. This greatly slows down the speed of the lifting operation and results in low work efficiency. Utility Model Content

[0005] Therefore, it is necessary to provide a hook structure for marine cranes to address the problem of low work efficiency.

[0006] A hook structure for a marine crane includes: a support base, a connecting block, and a hook body, wherein the hook body is rotatably connected to the support base via the connecting block;

[0007] An anti-detachment mechanism includes an anti-detachment plate hinged inside the connecting block, a sliding tube inside the hook body, a positioning block fixedly connected to the surface of the sliding tube, and an adjusting plate between the positioning block and the anti-detachment plate.

[0008] In one embodiment, a drive block is slidably connected to the inner wall of the hook body. The drive block is an arc-shaped block and is fixedly connected to the positioning block.

[0009] In one embodiment, a sensing block is fixedly connected to the end of the drive block away from the slide tube, and the sensing block is disposed inside the hook body.

[0010] In one embodiment, the hook body has a slide rail inside, and the slide tube is disposed in the slide rail and fits into the slide rail.

[0011] In one embodiment, a limiting rod is fixedly connected inside the slide rail, the slide tube is slidably connected to the limiting rod, a spring is sleeved on the surface of the limiting rod, and the spring is fixedly connected to the inside of the slide tube and the hook body.

[0012] In one embodiment, one end of the adjusting plate is hinged to the positioning block, and the other end of the adjusting plate is hinged to the middle of the anti-detachment plate.

[0013] In one embodiment, the support base is rotatably connected to a rotating shaft, and the connecting block is rotatably connected to the rotating shaft. Beneficial effects

[0014] By setting a positioning block inside the hook body in conjunction with an adjusting rod to drive the anti-detachment plate, and by using a sensing block in conjunction with a driving block and a sliding tube to drive the positioning block, when using the hook body for lifting, the lifting device will cause the sliding tube to move the positioning block along the inside of the hook body under the action of gravity, thereby driving the adjusting plate to drive the anti-detachment block to close. The anti-detachment block can be automatically closed without the need for personnel to operate the hook, reducing the workload of the personnel while increasing the lifting speed and achieving the purpose of improving work efficiency.

[0015] By setting a spring in conjunction with a limit rod and connecting it to the slide tube, the anti-detachment plate automatically opens under the action of the spring after the lifting is completed, allowing workers to manually open the anti-detachment plate, thereby reducing the risk of injury to workers when operating the hook and the anti-detachment plate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the anti-detachment mechanism of this utility model;

[0019] Figure 3 This is an exploded view of the anti-detachment mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the closed state structure of the anti-detachment plate of this utility model.

[0021] Figure label:

[0022] 100. Support base; 110. Steel cable pulley; 120. Rotating shaft; 200. Connecting block; 300. Hook body; 400. Anti-detachment mechanism; 410. Anti-detachment plate; 420. Adjusting plate; 430. Slide tube; 431. Positioning block; 440. Slide rail; 441. Limiting rod; 442. Spring; 450. Sensing block; 451. Drive block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] The following is combined with Figures 1-4 This invention describes the structure of a marine crane hook.

[0029] In one embodiment, a marine crane hook structure includes: a support base 100, a connecting block 200, and a hook body 300, wherein the hook body 300 is rotatably connected to the support base 100 via the connecting block 200.

[0030] The anti-detachment mechanism 400 includes an anti-detachment plate 410 hinged inside the connecting block 200, a sliding tube 430 is provided inside the hook body 300, a positioning block 431 is fixedly connected to the surface of the sliding tube 430, and an adjusting plate 420 is provided between the positioning block 431 and the anti-detachment plate 410.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, a drive block 451 is slidably connected to the inner wall of the hook body 300. The drive block 451 is an arc-shaped block. The drive block 451 is fixedly connected to the positioning block 431. A sensing block 450 is fixedly connected to the end of the drive block 451 away from the slide tube 430. The sensing block 450 is located inside the hook body 300. A slide rail 440 is provided inside the hook body 300. The slide tube 430 is located inside the slide rail 440 and fits against the slide rail 440. A limit rod 441 is fixedly connected inside the slide rail 440. The slide tube 430 is slidably connected to the limit rod 441. A spring 442 is sleeved on the surface of the limit rod 441. The spring 442 is fixedly connected to the slide tube 430 and the inside of the hook body 300. One end of the adjusting plate 420 is hinged to the positioning block 431, and the other end of the adjusting plate 420 is hinged to the middle of the anti-detachment plate 410.

[0032] In this embodiment, when the sensing block 450 moves to the lowest end within the hook body 300, there is still a distance between the end of the slide tube 430 and the end of the slide rail 440. At this time, the anti-detachment plate 410 is not in contact with the hook body 300. However, the gap between the anti-detachment plate 410 and the open part of the hook body 300 can block most of the lifting equipment from passing through. Although the sizes of the lifting equipment are different, when all the lifting equipment in the prior art moves to the lowest end of the hook body 300, the slide tube 430 cannot move to the end of the slide rail 440, so as to prevent the components in the anti-detachment structure from being damaged due to excessive pressure. Since the lifting equipment is usually a shackle, a lifting ring, a lifting lug, etc., used to connect the hook to the wire rope or chain, and most of the components of this device are located inside the hook body 300, and the adjusting rod is located on the back of the anti-detachment plate 410, the components of this device will not affect the effective space inside the hook.

[0033] like Figure 1 As shown, a rotating shaft 120 is rotatably connected inside the support base 100, and a connecting block 200 is rotatably connected to the rotating shaft 120. A steel cable pulley 110 is rotatably connected inside the support base 100, and the steel cable pulley 110 is located above the rotating shaft 120.

[0034] In this embodiment, before using the device, the support base 100 needs to be connected to the drive mechanism in the crane through the steel cable pulley 110 and the steel cable. The support base 100 is raised and lowered by the drive structure steel cable and the steel cable pulley 110, thereby driving the hook body 300 to rise and fall.

[0035] Working principle: When lifting the spreader, the hook body is lowered to the vicinity of the spreader, and then the spreader is hooked along the inner wall of the hook body 300. Then the lifting device is activated to raise the hook. During the lifting process, the spreader will slide down along the inner wall of the hook body 300 under the weight of the cargo, and drive the sensor block 450 to move.

[0036] The movement of the sensing block 450 will cause the driving block 451 to slide along the inner wall of the hook body 300. At the same time, it will push the slide tube 430 along the limit rod 441 and the slide rail 440 to move the positioning block 431 and stretch the spring 442. The movement of the positioning block 431 will cause one end of the adjusting rod to move. The adjusting rod will push the anti-detachment plate 410 to rotate so that the bottom end of the adjusting plate 420 is close to the inner wall of the hook body 300. Through the continuous pressure of the lifting device, the anti-detachment plate 410 is always in a closed state.

[0037] Once the load is transported to the preset position, it can be lowered. When the load contacts the ground, the lifting device loses the tension of the load and the pressure on the sensing block 450 is lost. Under the action of the spring 442, the slide tube 430 is driven to reset along the limit rod 441. At this time, the anti-detachment plate 410 is in the open state, and the staff can directly take the lifting device out from the hook body 300.

[0038] It should be noted that the spring 442, anti-detachment plate 410 and steel cable pulley 110 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A hook structure for a marine crane, characterized in that, include: The support base (100), the connecting block (200), and the hook body (300) are rotatably connected to the support base (100) via the connecting block (200); The anti-detachment mechanism (400) includes an anti-detachment plate (410) hinged inside the connecting block (200), a sliding tube (430) is provided inside the hook body (300), a positioning block (431) is fixedly connected to the surface of the sliding tube (430), and an adjusting plate (420) is provided between the positioning block (431) and the anti-detachment plate (410).

2. The marine crane hook structure according to claim 1, characterized in that, The inner wall of the hook body (300) is slidably connected to a drive block (451), the drive block (451) is an arc-shaped block, and the drive block (451) is fixedly connected to the positioning block (431).

3. The marine crane hook structure according to claim 2, characterized in that, The drive block (451) is fixedly connected to a sensing block (450) at one end away from the slide tube (430), and the sensing block (450) is located inside the hook body (300).

4. The marine crane hook structure according to claim 1, characterized in that, The hook body (300) has a slide rail (440) inside, and the slide tube (430) is set in the slide rail (440) and the slide tube (430) fits into the slide rail (440).

5. The marine crane hook structure according to claim 4, characterized in that, A limiting rod (441) is fixedly connected inside the slide rail (440), and the slide tube (430) is slidably connected to the limiting rod (441). A spring (442) is sleeved on the surface of the limiting rod (441), and the spring (442) is fixedly connected to the inside of the slide tube (430) and the hook body (300).

6. The marine crane hook structure according to claim 1, characterized in that, One end of the adjusting plate (420) is hinged to the positioning block (431), and the other end of the adjusting plate (420) is hinged to the middle of the anti-detachment plate (410).

7. The marine crane hook structure according to claim 1, characterized in that, The support base (100) is rotatably connected to a rotating shaft (120), and the connecting block (200) is rotatably connected to the rotating shaft (120).

8. The marine crane hook structure according to claim 7, characterized in that, The support base (100) is rotatably connected to a steel cable pulley (110), which is located above the rotating shaft (120).

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