Safety hook device for ship unloader

Abstract

The utility model relates to a safety hook device for a ship unloader, which comprises a tower safety hook support and a front crossbeam connecting frame, the tower safety hook support is rotatably connected with a safety hook, the middle part of the safety hook is connected with a power device, and the power device is connected with the upper part of the tower safety hook support; the upper part of the power device is connected with a sliding block; a safety hook lifting limiting assembly is arranged on the top of the tower safety hook support and makes contact with the sliding block. The safety hook is further provided with a safety hook falling limiting assembly. And a front girder movement limiting assembly is arranged on the front girder connecting frame. Through cooperation of the power device, the safety hook lifting limiting assembly, the safety hook falling limiting assembly and the front girder movement limiting assembly, the safety hook can be stopped in time in the falling and lifting process, or the front girder can be decelerated and stopped in time when making contact with a tower safety hook support. And local deformation caused by excessive stretching of the front crossbeam of the ship unloader is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of port machinery and equipment, in particular to a safety hook device for a ship unloader. Background Art

[0002] The ship unloader is a specialized equipment used for dock loading and unloading operations. During storm anchoring, maintenance operations, and ship clearance, the front beam of the ship unloader needs to be tilted upward and securely fixed.

[0003] Currently, most safety hook devices used in ship unloaders on the market utilize electric mechanisms such as power support rods or jacks to lift the safety hooks. However, due to installation precision deviations or other manufacturing process issues, the safety hooks on the market cannot be stopped in time during the lowering process, or the front beam cannot be slowed down and stopped in time during the movement and lifting process. This causes the front beam of the ship unloader to be over-lifted and partially deformed, affecting its performance. Summary of the Invention

[0004] In order to solve the problem that the safety hook cannot stop in time during the falling process, or the front beam cannot slow down and stop in time during the moving and lifting process, resulting in the front beam of the ship unloader being over-pulled up and causing local deformation thereof, the utility model provides a safety hook device for the ship unloader. Through the cooperation of the power device, the front beam movement limiting assembly, the safety hook lifting limiting assembly and the safety hook falling limiting assembly, the safety hook moves with the front beam during the lifting and falling process of the front beam, thereby preventing the front beam of the ship unloader from being over-stretched and causing local deformation.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0006] A safety hook device for a ship unloader comprises a tower safety hook support and a front beam connecting frame, wherein a safety hook is rotatably connected to the tower safety hook support, one end of the safety hook is rotatably connected to the tower safety hook support, and the other end is suspended in the air; a power device is connected to the middle of the safety hook, and the power device causes the safety hook to rotate around the tower safety hook support and the safety hook rotation connection point; the power device is connected to the upper part of the tower safety hook support; and a slider is connected to the upper part of the power device;

[0007] A safety hook lifting limit assembly is provided on the top of the tower safety hook support, and the safety hook lifting limit assembly is in contact with the slider; a safety hook falling limit assembly is also provided on the safety hook;

[0008] The front beam connecting frame is provided with a front beam motion limit assembly, which includes a limit bracket 1, a limit switch 1 and a limit switch 2. The limit switch 1 and the limit switch 2 are both fixed to the bottom of the tower safety hook support, and the limit switch 1 is arranged in front of the limit switch 2; the end of the limit bracket 1 is fixed to the bottom of the front beam connecting frame, and the front end of the limit bracket 1 is suspended, and the front end of the limit bracket 1 can contact the limit switch 1 and the limit switch 2 respectively.

[0009] Furthermore, the power unit includes a pull plate and a hydraulic pusher. One end of the pull plate is slidably connected to the safety hook, and the other end of the pull plate is connected to the end of the slider. The hydraulic pusher is fixed to the tower safety hook support, and the hydraulic rod of the hydraulic pusher is connected to the bottom of the slider. The power unit uses the hydraulic pusher to move the safety hook, improving the stability of the safety hook's movement.

[0010] Furthermore, a sliding groove is provided at the lower part of the pull plate, and a pin is provided on the safety hook, and the pin on the safety hook passes through the sliding groove and is connected to the pull plate.

[0011] Furthermore, the safety hook lifting limit assembly includes a limit switch five, which is fixed to the top of the tower safety hook support, and the slider can contact the limit switch five after being pushed by the hydraulic pusher.

[0012] Furthermore, the safety hook drop limit assembly includes a limit switch 4 and a limit bracket 2. The limit switch 4 is fixed to the top of the safety hook, and the limit bracket 2 is fixed to the upper portion of the front beam connecting frame. The limit switch 4 can contact the limit bracket 2 after the safety hook rotates. The safety hook drop limit assembly can ensure that the safety hook stops in time when it falls to the front beam connecting frame to prevent excessive stretching and deformation.

[0013] Furthermore, the tower safety hook support is equipped with a safety hook movement limiter, including a third limit switch, which is fixed to the tower safety hook support. The safety hook is an integrally formed hook-shaped structure, with a protrusion externally provided at the rotational connection of the safety hook; the third limit switch contacts the protrusion of the safety hook. The safety hook movement limiter and the safety hook drop limiter simultaneously ensure timely feedback and stop when the safety hook drops, improving safety.

[0014] Furthermore, a buffer is fixed to the tower safety hook support to prevent the bracket on the front beam from colliding with the tower safety hook support.

[0015] Through the above technical solution, the beneficial effects of the utility model are:

[0016] The present invention utilizes a power unit, a front beam motion limiter assembly, a safety hook lift limiter assembly, and a safety hook drop limiter assembly to ensure the safety hook stops promptly during the drop and lift process and / or the front beam decelerates and stops promptly when it contacts the tower safety hook support. This solves the problem of partial deformation of the ship unloader's front beam caused by excessive lifting. The present invention includes a safety hook motion limiter and a safety hook drop limiter, which enhance the safety hook's ability to stop promptly before it reaches the front beam connecting frame, improving safety. The present invention also includes a buffer to effectively prevent collisions between the bracket on the front beam and the tower safety hook support. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a safety hook device for a ship unloader.

[0018] Figure 2 The utility model is a left side view of a safety hook device for a ship unloader.

[0019] Figure 3 The utility model is a schematic diagram of the use state of the safety hook of the safety hook device for the ship unloader, showing the lifting and falling of the safety hook.

[0020] Figure 4 The utility model is a structural schematic diagram of a slider of a safety hook device for a ship unloader.

[0021] Figure 5 The utility model is a structural schematic diagram of a safety hook of a safety hook device for a ship unloader.

[0022] Figure 6 The utility model is a structural schematic diagram of a pull plate of a safety hook device for a ship unloader.

[0023] The numbers in the attached figure are: 1. Limit bracket 1, 2. Limit switch 1, 3. Limit switch 2, 4. Limit switch 3, 5. Limit bracket 2, 6. Limit switch 4, 7. Safety hook, 8. Buffer, 9. Pull plate, 10. Hydraulic pusher, 11. Limit switch 5, 12. Slider, 13. Tower safety hook support, 14. Front beam connecting frame. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0025] like Figures 1 to 6As shown, a safety hook device for a ship unloader includes a tower safety hook support 13 and a front beam connecting frame 14, the tower safety hook support 13 is rotatably connected to the safety hook 7, and the safety hook 7 is an integrally formed hook-shaped structure, one end of the safety hook 7 is rotatably connected to the tower safety hook support 13, and the other end is suspended; a power device is connected to the middle of the safety hook 7, and the power device causes the safety hook 7 to rotate around the tower safety hook support 13 and the rotation connection point of the safety hook 7 as the center; the power device includes a pull plate 9 and a hydraulic pusher 10, the hydraulic pusher 10 is fixed to the lower part of the tower safety hook support 13, and a slider 12 is connected to the hydraulic rod of the hydraulic pusher 10; the pull plate 9 is a strip structure with a slide groove at one end. In this embodiment, there are two pull plates 9, and a pin is provided on the safety hook. One end of each pull plate 9 with a slide groove is slidably connected to the pin of the safety hook 7, and the other end of the pull plate 9 is fixedly connected to the slider 12.

[0026] A safety hook lifting limit assembly is provided on the top of the tower safety hook support 13, and the safety hook lifting limit assembly includes a limit switch five 11. The limit switch five 11 is fixed to the top of the tower safety hook support 13, and the slider 12 can contact the limit switch five 11 after being pushed by the hydraulic pusher 10.

[0027] The safety hook 7 is also provided with a safety hook drop limit assembly; the safety hook drop limit assembly includes a limit switch four 6 and a limit bracket two 5, the limit switch four 6 is fixed to the top of the safety hook 7, and the limit bracket two 5 is fixed to the upper part of the front beam connecting frame 14, and the limit switch four 6 can contact the limit bracket two 5 after the safety hook 7 rotates.

[0028] In order to further improve the safety hook 7 to stop in time before touching the front beam connecting frame 14 when falling, a safety hook movement limiter is also provided on the tower safety hook support 13, and the safety hook movement limiter includes a limit switch 3 4. The limit switch 3 4 is fixed on the tower safety hook support 13. The safety hook 7 is an integrally formed hook structure as a whole, and a protrusion is provided on the outside of the rotating connection of the safety hook 7; the limit switch 3 4 is in contact with the protrusion of the safety hook 7.

[0029] The front beam connecting frame 14 is provided with a front beam motion limit assembly, including a limit bracket 1, a limit switch 2 and a limit switch 3. The limit switch 2 and the limit switch 3 are both fixed to the bottom of the tower safety hook support 13, and the limit switch 2 is arranged in front of the limit switch 2 3; the end of the limit bracket 1 is fixed to the bottom of the front beam connecting frame 14, and the front end of the limit bracket 1 is suspended. The front end of the limit bracket 1 can contact the limit switch 2 and the limit switch 2 3 respectively.

[0030] A buffer 8 is also fixed to the tower safety hook support 13. In this embodiment, there are two buffers 8, one at each end of the lower part of the safety hook 7. The top of the buffer 8 is aligned with the bracket on the front beam connecting frame 14. This can effectively prevent the bracket on the front beam connecting frame from colliding with the tower.

[0031] During operation, as the front beam rises and approaches the safety hook 7, limit bracket 1 contacts limit switch 2. After limit switch 2 responds, the front beam decelerates. The front beam continues to move forward and rise. When limit bracket 1 on the front beam connecting frame 14 contacts limit switch 2 (3), the front beam stops rising and moving forward. Simultaneously, the hydraulic pusher 10 pushes the pull plate 9, causing the safety hook 7 to rotate downward. Limit switch 2 (6) attached to the safety hook 7 contacts limit bracket 2 (5) on the front beam connecting frame 14. The protrusion of the safety hook 7 then contacts limit switch 3 (4), stopping the safety hook 7 from rotating. The front beam remains raised.

[0032] When the front beam does not need to remain raised, the hydraulic pusher 10 pushes the pull plate 9 to drive the safety hook 7 to lift upward, and the hydraulic pusher 10 pushes the slider 12 until the slider 12 touches the limit switch 5 11, and the front beam can be safely lowered.

[0033] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A safety hook device for a ship unloader, comprising a tower safety hook support (13) and a front beam connecting frame (14), characterized in that: The tower safety hook support (13) is rotatably connected to a safety hook (7), one end of the safety hook (7) is rotatably connected to the tower safety hook support (13), and the other end is suspended in the air; a power device is connected to the middle of the safety hook (7), and the power device causes the safety hook (7) to rotate around the tower safety hook support (13) and the rotation connection point of the safety hook (7); the power device is connected to the upper part of the tower safety hook support (13); the upper part of the power device is connected to a slider (12); A safety hook lifting limit assembly is provided on the top of the tower safety hook support (13), and the safety hook lifting limit assembly is in contact with the slider (12); a safety hook falling limit assembly is also provided on the safety hook (7); The front beam connecting frame (14) is provided with a front beam motion limit assembly, which includes a limit bracket 1 (1), a limit switch 1 (2) and a limit switch 2 (3). The limit switch 1 (2) and the limit switch 2 (3) are both fixed to the bottom of the tower safety hook support (13), and the limit switch 1 (2) is arranged in front of the limit switch 2 (3); the end of the limit bracket 1 (1) is fixed to the bottom of the front beam connecting frame (14), and the front end of the limit bracket 1 (1) is suspended, and the front end of the limit bracket 1 (1) can contact the limit switch 1 (2) and the limit switch 2 (3) respectively.

2. The safety hook device for a ship unloader according to claim 1, characterized in that: The power device includes a pull plate (9) and a hydraulic pusher (10), one end of the pull plate (9) is slidably connected to the safety hook (7), and the other end of the pull plate (9) is connected to the end of the slider (12), the hydraulic pusher (10) is fixed on the tower safety hook support (13), and the hydraulic rod of the hydraulic pusher (10) is connected to the bottom of the slider (12).

3. The safety hook device for a ship unloader according to claim 2, characterized in that: A sliding groove is provided at the lower portion of the pull plate (9), and a pin is provided on the safety hook (7). The pin on the safety hook (7) passes through the sliding groove and is connected to the pull plate (9).

4. The safety hook device for a ship unloader according to claim 1, characterized in that: The safety hook lifting limit assembly includes a limit switch five (11), which is fixed to the top of the tower safety hook support (13), and the slider (12) can contact the limit switch five after being pushed by the hydraulic pusher (10).

5. The safety hook device for a ship unloader according to claim 1, characterized in that: The safety hook drop limit assembly includes a limit switch four (6) and a limit bracket two (5), wherein the limit switch four (6) is fixed to the top of the safety hook (7), and the limit bracket two (5) is fixed to the upper part of the front beam connecting frame (14), and the limit switch four (6) can contact the limit bracket two (5) after the safety hook (7) rotates.

6. The safety hook device for a ship unloader according to claim 1, characterized in that: The tower safety hook support (13) is also provided with a safety hook movement limiter, and the safety hook movement limiter includes a limit switch three (4). The limit switch three (4) is fixed on the tower safety hook support (13). The safety hook (7) is an integrally formed hook-shaped structure. A protrusion is provided on the outside of the rotation connection of the safety hook (7); the limit switch three (4) contacts the protrusion of the safety hook (7).

7. The safety hook device for a ship unloader according to claim 1, characterized in that: A buffer (8) is also fixed on the tower safety hook support (13).

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