Safe crane lifting device for bulk cargo ship

Abstract

The utility model relates to a safe crane lifting device for a bulk cargo ship, which is applied to the field of cranes and comprises a sleeve arranged at the lower end of a lifting rope, the lower end of the sleeve is fixedly connected with a positioning rod, the lower end of the positioning rod is fixedly connected with an anti-dropping hook, and the outer surface of the sleeve is respectively sleeved with a mounting plate and a cross plate in a sliding manner and fixedly sleeved with the mounting plate. The installation plate is located below the cross plate, the lower end of the installation plate is fixedly connected with a protection pipe, the anti-falling hook is located in the protection pipe, the lower end of the protection pipe is fixedly connected with a positioning ring, the anti-falling hook is isolated through the protection pipe, and the situation that the anti-falling hook collides with a worker during shaking is effectively avoided; a hanging ring of a hoisted object is automatically positioned in a magnetic adsorption mode of the magnetic ring, a worker does not need to manually receive and take the hook, after the protective pipe moves upwards, the anti-falling hook is exposed, and then goods are hoisted, so that the safety of the hoisting device is effectively improved, and safety accidents are reduced.

Description

Technical Field

[0001] This utility model relates to a lifting device, and more particularly to a safety lifting device for bulk carriers using cranes. Background Technology

[0002] A crane is a large deck machine used for loading and unloading cargo on ships. Cranes can be divided into three types according to their power source: manual, electric, and hydraulic. Among them, hydraulic cranes are a commonly used loading and unloading equipment on ships.

[0003] Chinese Patent Publication No. CN219708888U discloses a lifting device. In use, the lifting device first extends the first lifting rope, bringing the clamping arms closer to the object to be lifted. Then, the object is suspended from the hook and positioned within the clamping space. Next, the crane retracts the first lifting rope, raising the object off the ground. Pulled by the object, the first lifting rope causes the connecting rod to rotate, reducing the distance between the two clamping arms and thus clamping the object tightly within the clamping space, thereby reducing the possibility of slippage. Therefore, this lifting device reduces the likelihood of slippage during use, making it safer to operate.

[0004] However, since cranes are used on ships, the rigging ropes are more prone to swaying in the sea breeze. When the cargo is attached to the hook, this process usually needs to be done manually. When the rigging ropes sway, the hook may directly hit the worker's hands or even head while the worker is taking the hook, which could cause a safety accident. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that when manually hoisting a crane, the hook may directly hit the worker's hand or even head during the process of receiving the hook, thus causing a safety accident.

[0006] To address the aforementioned problems, this utility model provides a safety lifting device for a crane used on bulk carriers, comprising a sleeve installed at the lower end of a lifting rope, a positioning rod fixedly connected to the lower end of the sleeve, an anti-detachment hook fixedly connected to the lower end of the positioning rod, a mounting plate and a cross plate slidably and fixedly fitted on the outer surface of the sleeve, the mounting plate being located below the cross plate, a protective tube fixedly connected to the lower end of the mounting plate, the anti-detachment hook being located inside the protective tube, a positioning ring fixedly connected to the lower end of the protective tube, a magnetic ring fixedly connected to the lower end of the positioning tube, and multiple positioning plates fixedly connected to the inner ring surface of the positioning ring, a pull rod fixedly connected to the upper end of the positioning plate, the upper end of the pull rod being fixedly through the mounting plate and movable through the cross plate, the protective tube including a telescopic tube fixedly connected to the lower end of the mounting plate, a sponge sleeve fixedly fitted on the outer surface of the telescopic tube, and multiple airbag strips fixedly connected to the outer surface of the sponge sleeve, the multiple airbag strips being distributed in a ring array around the central axis of the mounting plate.

[0007] In the aforementioned safety lifting device for bulk carriers, the anti-detachment hook is isolated by a protective tube, effectively preventing the anti-detachment hook from hitting the workers when it sways. The hook ring of the object being lifted is automatically positioned by magnetic attraction through a magnetic ring, eliminating the need for workers to manually handle the hook. After the protective tube moves upward, the anti-detachment hook is exposed, and the cargo can then be lifted. This effectively improves the safety of the lifting device and reduces the occurrence of safety accidents.

[0008] As a further improvement of this application, the anti-detachment hook includes a hook body fixedly connected to the lower end of the positioning rod, and a baffle is rotatably sleeved on the outer surface of the hook body. An adjusting block is rotatably connected to the lower end of the baffle, and a stop block is fixedly connected to the upper end of the baffle. An anti-slip pad is fixedly connected to the inner wall of the hook body. The anti-slip pad is made of rubber.

[0009] As a further improvement of this application, a tension spring is fixedly connected between the stop block and the adjusting block, and a spring sheet is fixedly connected between the baffle and the inner wall of the hook body.

[0010] As a further improvement to this application, the mounting plate is made of metal, and a magnetic sheet is fixedly embedded at the lower end of the cross plate.

[0011] As another improvement of this application, multiple positioning plates are arranged in a ring array around the mounting plate, and the pull rod is T-shaped.

[0012] As another improvement of this application, a camera is also fixedly connected to the lower end of the mounting plate. The camera is located on the left side of the protective tube and is connected to the signal of an external controller.

[0013] In summary, in practical applications, during the movement of the crane, the protective tube is installed outside the anti-detachment hook. As the swaying amplitude gradually decreases, the anti-detachment hook gradually approaches the upper part of the suspended object. At this time, under the magnetic effect of the magnetic ring, the entire protective tube outside the anti-detachment hook can contact and be attracted and positioned with the ferromagnetic metal parts on the upper surface of the suspended object. This positions the anti-detachment hook and stops swaying. At this time, the worker can suspend the hanging ring on the suspended object onto the anti-detachment hook. Compared with existing technologies, the worker does not need to manually remove the anti-detachment hook, thus effectively avoiding the impact accident when removing the anti-detachment hook during swaying. Furthermore, due to the multi-layered protective tube, the outer sponge sleeve and airbag strip can effectively buffer the impact force even if an impact occurs. With the limit of multiple pull rods, the protective tube is unlikely to deform excessively during an impact, thus effectively ensuring that the anti-detachment hook is not prone to instantaneous contact with the protective tube, making it difficult for the anti-detachment hook to have a hard collision with the human body, thereby greatly reducing safety hazards. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0015] Figure 2 This is a structural cross-sectional view of the first embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the protective tube structure according to the first embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the positioning ring structure according to the first embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the anti-detachment hook structure according to the first embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the baffle rotation according to the first embodiment of this application;

[0020] Figure 7 This is a front view of the structure of the second embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1. Lifting rope, 2. Mounting plate, 3. Positioning rod, 4. Protective tube, 401. Telescopic tube, 402. Sponge sleeve, 403. Airbag strip, 5. Anti-detachment hook, 501. Hook body, 502. Baffle, 503. Adjusting block, 504. Stop block, 505. Tension spring, 506. Spring piece, 507. Anti-slip pad, 6. Positioning ring, 7. Magnetic ring, 8. Pull rod, 9. Cross plate, 10. Cylinder, 11. Camera. Detailed Implementation

[0023] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] First implementation method:

[0025] Figure 1 , Figure 2 , Figure 3 and Figure 4 The diagram shows a safety lifting device for a bulk carrier using a crane, comprising a sleeve 10 installed at the lower end of a lifting rope 1. A positioning rod 3 is fixedly connected to the lower end of the sleeve 10, and an anti-detachment hook 5 is fixedly connected to the lower end of the positioning rod 3. An mounting plate 2 and a cross plate 9 are slidably and fixedly mounted on the outer surface of the sleeve 10, respectively. The mounting plate 2 is located below the cross plate 9 and is made of metal. A magnetic piece is fixedly embedded at the lower end of the cross plate 9. Pushing the mounting plate 2 upwards until it contacts the cross plate 9, and then... The magnetic plate below plate 9 limits the mounting plate 2, thereby limiting the protective tube 5, making it easier for workers to hang the hanging ring on the anti-detachment hook 5. The lower end of the mounting plate 2 is fixedly connected to the protective tube 4. The protective tube 4 includes a telescopic tube 401 fixedly connected to the lower end of the mounting plate 2. A sponge sleeve 402 is fixedly fitted on the outer surface of the telescopic tube 401. Multiple airbag strips 403 are fixedly connected to the outer surface of the sponge sleeve 402. The multiple airbag strips 403 are arranged in a ring array around the central axis of the mounting plate 2. Through the telescopic tube 401 and the sponge... The sleeve 402 and the airbag strip 403 effectively improve the protective performance of the protective tube 4. Even if the protective tube 4 accidentally hits a worker, the soft airbag strip 403 and the sponge sleeve 402 can effectively prevent the anti-detachment hook 5 from injuring the worker, thus effectively improving the safety performance of this application. The anti-detachment hook 5 is located inside the protective tube 4. A positioning ring 6 is fixedly connected to the lower end of the protective tube 4, and a magnetic ring 7 is fixedly connected to the lower end of the positioning tube 6. Multiple positioning plates are fixedly connected to the inner ring surface of the positioning ring 6, and a pull rod 8 is fixedly connected to the upper end of the positioning plate. Rod 8 can limit the mounting plate 2 and support the protective tube 4, making the protective tube 4 less prone to large deformation due to impact. Multiple positioning plates are arranged in a ring array around the mounting plate 2. The pull rod 8 is T-shaped, and the upper end of the pull rod 8 is fixed to the through mounting plate 2 and the movable through cross plate 9 respectively. The magnetic ring 7 is magnetic, so that the magnetic ring 7 can automatically position the hanging ring on the object being hoisted. After the hanging ring contacts the magnetic ring 7, the worker pushes the mounting plate 2 upward, so that the protective tube 4 moves upward as a whole, thereby exposing the anti-detachment hook 5.

[0026] It is worth noting that the hanging rings on the upper surface of the object being hoisted are mostly made of ferromagnetic metal, which allows them to attract each other with the magnetic ring 7.

[0027] Figure 2 , Figure 5 and Figure 6The diagram shows that the anti-detachment hook 5 includes a hook body 501 fixedly connected to the lower end of the positioning rod 3. A baffle 502 is rotatably sleeved on the outer surface of the hook body 501. An adjusting block 503 is rotatably connected to the lower end of the baffle 502. A stop block 504 is fixedly connected to the upper end of the baffle 502. A tension spring 505 is fixedly connected between the stop block 504 and the adjusting block 503. A spring piece 506 is fixedly connected between the baffle 502 and the inner wall of the hook body 501. An anti-slip pad 507, made of rubber, is fixedly connected to the inner wall of the hook body 501. When the ring is aligned with the hook body 501, the ring is inserted into the hook body 501, pushing the baffle 502 and adjusting block 503 to rotate. At this time, the spring 506 deforms inward, and the tension spring 505 stretches inward until the ring passes under the adjusting block 503 and is located on the anti-slip pad 507. Then the baffle 502 and adjusting block 503 reset. The adjusting block 503 can be limited by the stop block 504, forcing the adjusting block 503 to be unable to rotate counterclockwise, thereby limiting the ring and effectively preventing the ring from falling off the hook body 501 during hoisting.

[0028] During the movement of the crane, the protective tube 4 is placed over the anti-detachment hook 5. As the swaying amplitude gradually decreases, the anti-detachment hook 5 gradually approaches the upper end of the suspended object. At this time, under the magnetic action of the magnetic ring 7, the protective tube 4 located outside the anti-detachment hook 5 can contact and be attracted to the ferromagnetic metal parts on the upper surface of the suspended object, thereby positioning the anti-detachment hook 5 and stopping the swaying. At this time, the worker suspends the hanging ring on the suspended object onto the anti-detachment hook 5. Compared with the existing technology, the worker does not need to manually take off the anti-detachment hook 5, thus effectively avoiding the accident of being hit when taking off the anti-detachment hook 5 during the swaying. Moreover, due to the multiple layers of the protective tube 4, under the action of the outer sponge sleeve 402 and airbag strip 403, even if an impact occurs, the impact force can be effectively buffered. Furthermore, under the limit of multiple pull rods 8, the protective tube 4 is difficult to deform excessively during an impact, thus effectively ensuring that the anti-detachment hook 5 is not easy to make instantaneous contact with the protective tube 4, making it difficult for the anti-detachment hook 5 to have a hard collision with the human body, thereby greatly reducing safety hazards.

[0029] Second implementation method:

[0030] This embodiment adds a camera 11 to the first embodiment, while the rest remains the same as the first embodiment.

[0031] Figure 7 As shown: A camera 11 is also fixedly connected to the lower end of the mounting plate 2. The camera 11 is located on the left side of the protective tube 4 and is connected to the external controller.

[0032] During the movement of the crane frame, the camera 11 can locate the specific position of the bulk carrier, thereby assisting the magnetic ring 7 in positioning the cargo, effectively improving the speed of cargo positioning and facilitating the lifting of cargo by the staff.

[0033] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A safety lifting device for a bulk carrier using a crane, comprising a sleeve (10) installed at the lower end of a lifting rope (1), characterized in that: The lower end of the sleeve (10) is fixedly connected to a positioning rod (3), and the lower end of the positioning rod (3) is fixedly connected to an anti-detachment hook (5). The outer surface of the sleeve (10) is slidably fitted with and fixedly fitted with an installation plate (2) and a cross plate (9). The installation plate (2) is located below the cross plate (9). The lower end of the installation plate (2) is fixedly connected to a protective tube (4). The anti-detachment hook (5) is located inside the protective tube (4). The lower end of the protective tube (4) is fixedly connected to a positioning ring (6). The lower end of the positioning ring (6) is fixedly connected to a magnetic ring (7). The inner ring surface of the positioning ring (6) is fixedly connected to multiple positioning plates. The upper end of the positioning plate is fixedly connected to a pull rod (8). The upper end of the pull rod (8) is fixedly connected to the installation plate (2) and the movable cross plate (9). The protective tube (4) includes a telescopic tube (401) fixedly connected to the lower end of the mounting plate (2). A sponge sleeve (402) is fixedly fitted on the outer surface of the telescopic tube (401). A plurality of airbag strips (403) are fixedly connected to the outer surface of the sponge sleeve (402). The plurality of airbag strips (403) are arranged in a ring array around the central axis of the mounting plate (2).

2. The safety lifting device for a bulk carrier using a crane according to claim 1, characterized in that: The anti-detachment hook (5) includes a hook body (501) fixedly connected to the lower end of the positioning rod (3), and a baffle (502) is rotatably sleeved on the outer surface of the hook body (501). An adjusting block (503) is rotatably connected to the lower end of the baffle (502), and a stop block (504) is fixedly connected to the upper end of the baffle (502). An anti-slip pad (507) is fixedly connected to the inner wall of the hook body (501), and the anti-slip pad (507) is made of rubber.

3. A safe lifting device for a cargo ship's crane according to claim 2, characterized in that: A tension spring (505) is fixedly connected between the stop block (504) and the adjusting block (503), and a spring piece (506) is fixedly connected between the baffle (502) and the inner wall of the hook body (501).

4. A safe lifting device for a cargo ship's crane according to claim 1, characterized in that: The mounting plate (2) is made of metal, and a magnetic sheet is fixedly embedded at the lower end of the cross plate (9).

5. A safe lifting device for a cargo winch of a bulk carrier according to claim 1, characterized in that: The multiple positioning plates are arranged in a ring array around the mounting plate (2), and the pull rod (8) is T-shaped.

6. A safe lifting device for a cargo winch of a bulk carrier according to claim 1, characterized in that: The lower end of the mounting plate (2) is also fixedly connected to a camera (11), which is located on the left side of the protective tube (4) and is connected to an external controller.

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