A wharf cargo handling anti-skid self-locking sling structure
By designing a combined structure of lifting ring assembly, lifting rod and locking rod, the self-locking of the hook is achieved, solving the problem of goods falling off during lifting and improving lifting safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAMEN OCEAN VOCATIONAL & TECH COLLEGE
- Filing Date
- 2026-04-21
- Publication Date
- 2026-06-26
AI Technical Summary
Existing lifting equipment can easily cause goods to detach from the hook during lifting, posing a safety hazard.
A self-locking anti-slip lifting device structure for loading and unloading cargo at a dock was designed. Through the combination of lifting ring components, lifting rod components, locking rod and spring components, the hook is self-locked by lever linkage and spring force to prevent the cargo from swaying and falling off during the lifting process.
This effectively prevents goods from falling off the hook during hoisting, improves hoisting safety, and ensures stable movement of goods in the air.
Smart Images
Figure CN122276597A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lifting device technology, specifically to a self-locking, anti-slip lifting device structure for loading and unloading cargo at a dock. Background Technology
[0002] Terminal cargo handling refers to the process by which port loading and unloading companies use loading and unloading machinery systems to carry out cargo loading, unloading, handling, and storage operations at the terminal. Generally, it uses spreaders installed on port cranes (such as quay cranes and yard cranes) to directly grab or lift, raise, transfer, and release various types of cargo such as containers, bulk cargo, and general cargo.
[0003] Most commonly used lifting devices currently employ a hook-shaped structure. They are used to lift goods by hooking them onto the specialized lifting straps or the lifting rings attached to the packaging. However, due to the variability of the lifting process, the exposed hook-shaped lifting device causes the goods to sway and swing in the air. If the swaying is too large, the goods may easily detach from the hook and fall, posing a significant safety hazard. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a self-locking anti-slip lifting device structure for loading and unloading cargo at docks, which solves the problem mentioned in the background art that existing lifting devices are prone to causing cargo to detach from the hook during the lifting process.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a self-locking anti-slip lifting device structure for loading and unloading cargo at a dock, comprising a lifting plate component, the top surface of the lifting plate component being fixedly connected to the bottom surface of a sliding vertical cylinder, the inner side wall of the sliding vertical cylinder being slidably connected to the outer side wall of a lifting rod component, and a lifting ring assembly being movably installed on the top surface of the lifting rod component; The outer side of the lifting rod is slidably connected to the inner side wall of the locking rod, the outer side wall of the bottom end of the locking rod is movably engaged with the outer side wall of the top end of the hook, and a spring is provided on the top surface of the lifting plate.
[0006] Optionally, multiple rotating rods are fixedly connected to the sides of the hanging plate in a circular array, and a spring base is fixedly connected to the top surface of the hanging plate. The spring is fixedly connected to the top surface of the hanging plate through the spring base. Multiple rotating rods are arranged in a circular array on the sides around the lifting platform.
[0007] Optionally, a limit ring is fixedly connected to the top surface of the sliding vertical cylinder, and multiple sliding grooves are distributed in a ring array on the side walls around the sliding vertical cylinder, with the spring component located inside the sliding vertical cylinder.
[0008] Optionally, the lifting rod includes a connecting rod, and multiple sliders are fixedly connected in a ring array on the outer side wall of the bottom end of the connecting rod. Each slider is fixedly connected to a sliding rod at the end away from the connecting rod. The top surface of the connecting rod is fixedly connected to the bottom surface of the connecting plate, and a connecting cap is fixedly connected to the top surface of the connecting plate. The connecting cap has an installation hole inside.
[0009] Optionally, the lifting ring assembly includes a mounting ring, the bottom of which is fixedly connected to two connecting rings. The inner sidewall of each connecting ring is slidably connected to the outer sidewall of the fastening screw, and the outer sidewall of the fastening screw is threadedly connected to the inner sidewall of the fastening nut. The mounting ring is fitted onto both sides of the connecting cap via two connecting rings at the bottom. The mounting ring is fixedly installed and connected to the connecting cap by fastening screws passing through the mounting holes inside the two connecting rings and the connecting cap, and by fastening nuts.
[0010] Optionally, the locking rod includes a crank rod, the inner side of the top of the crank rod is provided with a sliding groove, the middle of the crank rod is provided with a rotating hole, and the bottom of the crank rod is provided with a tenon groove; The sliding groove is inclinedly disposed at the top of the crank arm.
[0011] Optionally, the hook component includes a hook body, the front end of which is provided with a tenon joint, and the outer side wall of the hook body is fixedly connected to the inner side wall of the silicone anti-slip sleeve.
[0012] Optionally, the outer wall of the connecting rod is slidably connected to the inner wall of the limiting ring, and the outer walls of the multiple sliders are respectively slidably connected to the inner walls of the grooves corresponding to the side walls of the sliding vertical cylinder. The bottom surface of the connecting rod is in contact with the top surface of the spring, and the bottom surface of the connecting plate is in movable contact with the top surface of the limiting ring.
[0013] Optionally, there are several locking rods, and the locking rods are respectively rotatably connected to the outer side wall of the corresponding rotating rod through the inner side wall of the rotating hole and disposed on the outer side of the hanging plate component. Each locking rod is slidably connected to the outer side wall of the corresponding slider end of the sliding rod through the inner side wall of the top sliding groove.
[0014] Optionally, there are several hook components, which are arranged in a circular array on the bottom surface of the lifting plate component, and each hook component is fixedly connected to the bottom surface of the lifting plate component through the top surface of the rear end of the hook body. The outer wall of the tenon joint at the top front end of each hook body is movably tenoned with the inner wall of the tenon groove at the bottom end of the corresponding locking rod.
[0015] This invention provides a self-locking anti-slip lifting device structure for loading and unloading cargo at a dock, which has the following advantages: This invention relates to a cargo loading and unloading anti-slip self-locking lifting device structure. It is equipped with a lifting ring assembly. The mounting ring of the lifting ring assembly is fixedly connected to the connecting cap on the top surface of the connecting rod through the bottom connecting ring and the fastening screw and fastening nut. Thus, this device can be installed and used in conjunction with lifting machinery.
[0016] This invention relates to a cargo loading and unloading anti-slip self-locking lifting device structure. It includes a lifting rod component. The lifting rod slides within a sliding vertical cylinder via a connecting rod and multiple sliders on its bottom sidewall. As the connecting rod slides upward within the sliding vertical cylinder, it slides within a sliding groove via the sliders and their end rods. Due to the inclined design of the sliding groove, when the slider reaches the top of the sliding vertical cylinder, the rod is also positioned at the top of the sliding groove. At this point, a crank rod rotates through a pivot hole onto a rotating rod on the side of the lifting plate component. Through lever-type linkage, the tenon groove at the bottom of the crank rod engages with the tenon joint at the top of the hook body below, achieving a closed and locked effect on the hook body via the crank rod.
[0017] This invention relates to a cargo loading and unloading anti-slip self-locking lifting device structure. It incorporates a spring component located inside a sliding vertical cylinder. The spring component's upper and lower ends are fixedly connected to the top surface of the lifting platform and the bottom surface of the connecting rod, respectively. When no cargo is being lifted, the connecting rod is pulled downwards within the sliding vertical cylinder by the spring force. This causes the sliding rod at the end of the slider on the side wall of the connecting rod to be positioned at the bottom of the sliding groove, thereby releasing the locking mechanism between the tenon groove at the end of the locking rod and the tenon joint at the end of the hook body. This facilitates the use of the hook body for lifting cargo.
[0018] This invention relates to a cargo loading and unloading anti-slip self-locking lifting device structure. It features a lifting rod that connects to external lifting machinery via a top connecting cap. During cargo lifting, the cargo's own weight pulls down the lifting platform and sliding vertical cylinder, causing the connecting rod and its bottom slider to move upwards within the sliding vertical cylinder until the top surface of the slider contacts the bottom surface of the limiting ring. At this point, the sliding rod at the end of the slider on the side wall of the connecting rod slides to the top within the sliding groove. The inclined sliding groove then drives the locking rod, through a lever-type linkage, to engage the tenon groove at the bottom of the crank rod with the tenon joint at the top of the hook body below. This achieves locking of the hook body and crank rod simultaneously with the cargo's own weight, preventing cargo from detaching from the hook body due to swaying during lifting. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the invention; Figure 2 This is a structural schematic diagram of the lifting platform component in the invention; Figure 3 This is a cross-sectional schematic diagram of the sliding vertical cylinder in the invention; Figure 4 This is a schematic diagram of the lifting rod component in the invention; Figure 5 This is a schematic diagram of the lifting ring assembly in the invention; Figure 6 This is a schematic diagram of the locking rod in the invention; Figure 7 This is a schematic diagram of the hook component in the invention.
[0020] In the diagram: 1. Hanging plate; 11. Rotating rod; 12. Spring base; 2. Sliding vertical cylinder; 21. Limiting ring; 22. Slide groove; 3. Hanging rod; 31. Connecting rod; 32. Sliding block; 33. Slide rod; 34. Connecting plate; 35. Connecting cap; 351. Mounting hole; 4. Hanging ring assembly; 41. Mounting ring; 42. Connecting ring; 43. Fastening screw; 44. Fastening nut; 5. Locking rod; 51. Crank rod; 52. Sliding groove; 53. Rotating hole; 54. Tenon groove; 6. Hook; 61. Hook body; 62. Tenon joint; 63. Silicone anti-slip sleeve; 7. Spring. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0022] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0024] Please see Figures 1 to 7The present invention provides a technical solution: a self-locking anti-slip lifting device structure for loading and unloading cargo at a dock, including a lifting plate 1, the top surface of the lifting plate 1 being fixedly connected to the bottom surface of the sliding vertical cylinder 2, the inner side wall of the sliding vertical cylinder 2 being slidably connected to the outer side wall of the lifting rod 3, and a lifting ring assembly 4 being movably installed on the top surface of the lifting rod 3; The outer side of the lifting rod 3 is slidably connected to the inner side wall of the locking rod 5, the outer side wall of the bottom end of the locking rod 5 is movably engaged with the outer side wall of the top end of the hook 6, and the top surface of the lifting plate 1 is provided with a spring 7.
[0025] In this embodiment, as Figure 1 and Figure 2 As shown, multiple rotating rods 11 are fixedly connected in a circular array around the sides of the hanging plate component 1, and a spring base 12 is fixedly connected to the top surface of the hanging plate component 1. The spring component 7 is fixedly connected to the top surface of the hanging plate component 1 through the spring base 12. Multiple rotating rods 11 are arranged in a circular array on the sides around the hanging plate component 1.
[0026] In this embodiment, as Figure 1 and Figure 3 As shown, a limit ring 21 is fixedly connected to the top surface of the sliding vertical cylinder 2, and multiple sliding grooves 22 are distributed in a ring array on the side walls around the sliding vertical cylinder 2. The spring component 7 is located inside the sliding vertical cylinder 2.
[0027] In this embodiment, as Figure 1 and Figure 4 As shown, the lifting rod 3 includes a connecting rod 31. Multiple sliders 32 are fixedly connected to the outer side wall of the bottom end of the connecting rod 31 in a ring array. Each slider 32 is fixedly connected to a sliding rod 33 at the end away from the connecting rod 31. The top surface of the connecting rod 31 is fixedly connected to the bottom surface of the connecting plate 34, and a connecting cap 35 is fixedly connected to the top surface of the connecting plate 34. The connecting cap 35 has an installation hole 351 inside.
[0028] In this embodiment, as Figure 1 , Figure 4 and Figure 5 As shown, the lifting ring assembly 4 includes a mounting ring 41, and two connecting rings 42 are fixedly connected to the bottom of the mounting ring 41. The inner sidewall of each connecting ring 42 is slidably connected to the outer sidewall of the fastening screw 43, and the outer sidewall of the fastening screw 43 is threadedly connected to the inner sidewall of the fastening nut 44. The mounting ring 41 is fitted onto both sides of the connecting cap 35 via two connecting rings 42 at the bottom. The mounting ring 41 passes through the mounting holes 351 inside the two connecting rings 42 and the connecting cap 35 via fastening screws 43 and is fixedly connected to the connecting cap 35 via fastening nuts 44.
[0029] In this embodiment, as Figure 1 and Figure 6 As shown, the locking lever 5 includes a crank lever 51, a sliding groove 52 is provided on the inner side of the top of the crank lever 51, a rotating hole 53 is provided in the middle of the crank lever 51, and a tenon groove 54 is provided at the bottom of the crank lever 51. The sliding groove 52 is inclinedly disposed on the top of the crank 51.
[0030] In this embodiment, as Figure 1 and Figure 7 As shown, the hook component 6 includes a hook body 61, the front end of the hook body 61 is provided with a tenon joint 62, and the outer side wall of the hook body 61 is fixedly connected to the inner side wall of the silicone anti-slip sleeve 63.
[0031] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, the outer wall of the connecting rod 31 is slidably connected to the inner wall of the limiting ring 21, and the outer walls of the multiple sliders 32 are respectively slidably connected to the inner walls of the grooves 22 corresponding to the side walls of the sliding vertical cylinder 2. The bottom surface of the fixed connecting rod 31 is in contact with the top surface of the spring member 7, and the bottom surface of the connecting plate 34 is in contact with the top surface of the limiting ring 21.
[0032] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, there are several locking rods 5. Each locking rod 5 is rotatably connected to the outer wall of the corresponding rotating rod 11 through the inner wall of the rotating hole 53 and is disposed on the outer side of the hanging plate 1. Each locking rod 5 is slidably connected to the outer wall of the sliding rod 33 at the end of the corresponding slider 32 through the inner wall of the top sliding groove 52.
[0033] In this embodiment, as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, there are several hook components 6, which are arranged in a circular array on the bottom surface of the lifting plate component 1, and each hook component 6 is fixedly connected to the bottom surface of the lifting plate component 1 through the top surface of the rear end of the hook body 61. The outer wall of the tenon joint 62 at the top front end of each hook body 61 is movably tenoned with the inner wall of the tenon groove 54 at the bottom end of the corresponding locking rod 5.
[0034] How to use this invention: The anti-slip self-locking spreader structure for cargo loading and unloading at this dock operates as follows: like Figures 1 to 7As shown, the installation ring 41 of the lifting ring assembly 4 is first connected to the external lifting machinery. The installation ring 41 of the lifting ring assembly 4 is fixedly connected to the connecting cap 35 on the top surface of the connecting rod 31 through the bottom connecting ring 42 and the fastening screw 43 and fastening nut 44, which facilitates the disassembly and use of the lifting ring assembly 4. When lifting goods, the hook body 61 of the hook component 6 is first connected to the sling or ring of the goods. By providing a silicone anti-slip sleeve 63 on the outside of the hook body 61, the friction between the hook body 61 and the sling or ring is increased, reducing the sliding effect caused by shaking. When lifting goods, the weight of the goods themselves pulls down the lifting plate component 1 and the sliding vertical cylinder 2, causing the connecting rod 31 and its bottom slider 32 to move up to the top of the sliding vertical cylinder 2, until the top surface of the slider 32 is flush with the bottom surface of the limiting ring 21. When the contact is released, the slide bar 33 at the end of the slider 32 on the side wall of the connecting rod 31 slides to the top in the sliding groove 52. Through the inclined sliding groove 52, the locking rod 5 is driven to engage with the tenon groove 54 at the bottom of the crank rod 51 and the tenon joint 62 at the top of the hook body 61 through a lever linkage. This achieves the limit locking of the hook body 61 and the crank rod 51 by the weight of the goods themselves while hoisting the goods, thereby avoiding the problem of the goods falling off the hook body 61 due to swaying during the hoisting process. When not in use, the spring 7, which is fixedly connected to the top surface of the lifting plate 1 and the bottom surface of the connecting rod 31, pulls the connecting rod 31 downward in the sliding vertical cylinder 2 by the elastic force of the spring 7. This causes the sliding rod 33 at the end of the slider 32 on the side wall of the connecting rod 31 to be located at the bottom of the sliding groove 52, thereby releasing the limiting lock between the tenon groove 54 at the end of the locking rod 5 and the tenon joint 62 at the end of the hook body 61, thus facilitating the use of the hook body 61 to lift goods.
[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A self-locking anti-slip lifting device structure for loading and unloading cargo at a dock, comprising a lifting platform (1), characterized in that: The top surface of the hanging plate (1) is fixedly connected to the bottom surface of the sliding vertical cylinder (2), the inner side wall of the sliding vertical cylinder (2) is slidably connected to the outer side wall of the hanging rod (3), and the top surface of the hanging rod (3) is movably installed with a hanging ring assembly (4). The outer side of the lifting rod (3) is slidably connected to the inner side wall of the locking rod (5), the outer side wall of the bottom end of the locking rod (5) is movably engaged with the outer side wall of the top end of the hook (6), and the top surface of the lifting plate (1) is provided with a spring (7).
2. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: The sides of the hanging plate (1) are arranged in a ring array and fixedly connected with multiple rotating rods (11). The top surface of the hanging plate (1) is fixedly connected with a spring base (12). The spring (7) is fixedly connected to the top surface of the hanging plate (1) through the spring base (12). Multiple rotating rods (11) are arranged in a ring array on the sides around the hanging plate (1).
3. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: The top surface of the sliding vertical cylinder (2) is fixedly connected to a limiting ring (21), and the side walls around the sliding vertical cylinder (2) are provided with multiple sliding grooves (22) in a ring array. The spring (7) is located inside the sliding vertical cylinder (2).
4. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: The lifting rod (3) includes a connecting rod (31). Multiple sliders (32) are fixedly connected to the outer side wall of the bottom end of the connecting rod (31) in a ring array. Each slider (32) is fixedly connected to a sliding rod (33) at the end away from the connecting rod (31). The top surface of the connecting rod (31) is fixedly connected to the bottom surface of the connecting plate (34), and a connecting cap (35) is fixedly connected to the top surface of the connecting plate (34). An installation hole (351) is provided inside the connecting cap (35).
5. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: The lifting ring assembly (4) includes a mounting ring (41), the bottom of which is fixedly connected to two connecting rings (42). The inner sidewall of each connecting ring (42) is slidably connected to the outer sidewall of the fastening screw (43), and the outer sidewall of the fastening screw (43) is threadedly connected to the inner sidewall of the fastening nut (44). The mounting ring (41) is fitted onto both sides of the connecting cap (35) by two connecting rings (42) at the bottom. The mounting ring (41) passes through the mounting holes (351) inside the two connecting rings (42) and the connecting cap (35) by fastening screws (43) and is fixedly connected to the connecting cap (35) by fastening nuts (44).
6. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: The locking rod (5) includes a crank rod (51), a sliding groove (52) is provided on the inner side of the top of the crank rod (51), a rotating hole (53) is provided in the middle of the crank rod (51), and a tenon groove (54) is provided at the bottom of the crank rod (51). The sliding groove (52) is inclinedly disposed on the top of the crank arm (51).
7. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: The hook component (6) includes a hook body (61), the front end of which is provided with a tenon joint (62), and the outer side wall of the hook body (61) is fixedly connected to the inner side wall of the silicone anti-slip sleeve (63).
8. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 3, characterized in that: The outer wall of the connecting rod (31) is slidably connected to the inner wall of the limiting ring (21), and the outer walls of the multiple sliders (32) are respectively slidably connected to the inner walls of the grooves (22) corresponding to the side walls of the sliding vertical cylinder (2). The bottom surface of the connecting rod (31) is in contact with the top surface of the spring (7), and the bottom surface of the connecting plate (34) is in contact with the top surface of the limiting ring (21).
9. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: There are several locking rods (5). Each locking rod (5) is rotatably connected to the outer side wall of the corresponding rotating rod (11) through the inner side wall of the rotating hole (53) and is located on the outer side of the hanging plate (1). Each locking rod (5) is slidably connected to the outer side wall of the sliding rod (33) at the end of the corresponding slider (32) through the inner side wall of the sliding groove (52) at the top.
10. The anti-slip self-locking lifting device structure for loading and unloading cargo at a dock according to claim 1, characterized in that: There are several hook components (6), and several hook components (6) are arranged in a circular array on the bottom surface of the lifting plate component (1), and each hook component (6) is fixedly connected to the bottom surface of the lifting plate component (1) through the top surface of the rear end of the hook body (61). The outer wall of the tenon joint (62) at the top front end of each hook body (61) is movably tenoned with the inner wall of the tenon groove (54) at the bottom end of the corresponding locking rod (5).