Welded fixture for container ships
By designing a welded fastener for container ships, which employs a structure including a welded base, rotating rod, clamping plate, and wedge, automatic locking and stable rotation of the locking tongue are achieved. This solves the problems of inconvenient operation and unstable limit of existing torsion locks, and improves the stability and versatility of the container fastening process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNITED LASHING WORKS
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-31
AI Technical Summary
Existing twist locks for container ships are inconvenient to operate and lack a limiting mechanism, which makes the helical lock head easy to loosen, increasing replacement costs and wasting resources.
A welded fastener for container ships has been designed, including a welded base, a rotating rod, a clamping plate, a wedge, and an adjusting assembly. It achieves automatic locking and stable rotation of the locking tongue through mechanical linkage, simplifying the operation process and improving stability and versatility.
It achieves automatic locking of containers, simplifies the operation process, improves stability and the fixing effect of diagonal parts, adapts to the complex environment of ships, and requires no additional power source.
Smart Images
Figure CN224576786U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of container fasteners, specifically, it relates to welded fasteners for container ships. Background Technology
[0002] Container base twist locks are key devices used to secure the bottom containers in container ship transportation. They are welded to the base on the ship's deck or in the hold and mechanically locked in conjunction with the corner fitting holes at the bottom of the container to ensure the container remains stable during navigation. However, existing twist locks are not only inconvenient for operators to use, but also inconvenient to replace the lock head, thus increasing costs and wasting resources.
[0003] Chinese patent publication number CN212474692U discloses a semi-automatic twist lock for containers. When the handle is turned, the handle drives the second shaft to rotate, which in turn drives the first gear to rotate. The first gear and the second gear mesh with each other, which in turn drives the first shaft to rotate, thus restricting the first and second spiral lock heads to the corner fitting holes on the container. However, the device lacks a limiting mechanism for multiple shafts, which makes it easy for the spiral lock heads to loosen after being inserted into the corner fitting holes for limiting.
[0004] In view of this, this utility model is hereby proposed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a welded fastener for container ships, thus solving the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A welded fastener for container ships includes: a welded base with a fixing frame on top, a mounting plate on the fixing frame, a rotating rod that passes through and rotatably connects to the mounting plate, a locking tongue at the top of the rotating rod, and an abutment rod at the bottom of the rotating rod; A clamping plate is sleeved and movably mounted on the rotating rod. The clamping plate is slidably mounted on the mounting plate. A spring is sleeved on the rotating rod and abuts against the mounting plate and the clamping plate. A connecting rod is movably mounted through the mounting plate. One end of the connecting rod is fixedly connected to the clamping plate, and the other end is fixedly mounted with a first wedge block that can abut against the abutting rod. The first wedge block has an inclined end face that can abut against the abutting rod and drive the rotating rod to rotate.
[0007] Optionally, the first wedge is an arc-shaped structure coaxial with the rotating rod.
[0008] Optionally, a second wedge is fixedly installed at the bottom of the clamping plate. The second wedge is sleeved on and movably mounted on the rotating rod. A guide rod that abuts against the second wedge is vertically fixedly installed on the rotating rod. The second wedge has symmetrically provided inclined end faces that abut against the guide rod.
[0009] Optionally, the second wedge is a circular ring structure coaxial with the rotating rod.
[0010] Optionally, the clamping plate includes a top plate and insert plates fixed to both sides of the top plate. The top plate passes through and is movably mounted on the rotating rod. The mounting plate has a slot for inserting and moving the insert plates.
[0011] Optionally, multiple sliding rods are fixedly installed on the insert plate, and a sliding groove is provided through the mounting plate for the sliding rods to slide, the sliding groove being connected to the slot.
[0012] Optionally, it also includes a threaded rod that passes through and is movably disposed within the rotating rod, the top of the threaded rod being fixedly connected to the locking tongue, and the bottom of the rotating rod being provided with an adjustment component for controlling the raising and lowering of the threaded rod.
[0013] Optionally, the adjustment component includes: A worm gear is rotatably mounted at the bottom of the rotating rod, and the worm gear is sleeved and threadedly connected to the threaded rod. Two support plates are fixedly mounted on the rotating rod, and a worm gear meshing with the worm wheel is rotatably connected to the two support plates. An adjusting nut is fixedly mounted on the driving end of the worm gear.
[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time: 1. By setting up a pressure plate, a first wedge, a spring, and an abutment rod, the pressure plate moves down to drive the first wedge to abut against the abutment rod, thereby realizing the rotation of the rotating rod and the locking tongue, achieving the automatic locking function during container placement, simplifying the operation process, with a reliable mechanical linkage structure, no need for an additional power source, adapting to the complex environment of ships, and high stability; 2. By setting a second wedge and a guide rod, the second wedge will move downward when the pressure plate moves down, so that the inclined end face of the second wedge slides along the guide rod, which improves the stability of the rotation of the rotating rod; 3. By incorporating an adjustment component and a threaded rod, the height of the locking tongue can be finely adjusted, improving overall versatility and the fixing effect of the diagonal pieces.
[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0016] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model; Figure 5 This utility model Figure 4 A structural diagram from another perspective; Figure 6 This is a schematic diagram of the slot structure of this utility model; Figure 7 This is a schematic diagram of the structure of the second wedge block of this utility model; Figure 8 This is a schematic diagram of the structure of the guide rod of this utility model.
[0017] The attached diagram lists the components represented by each number as follows: 1. Welded base; 2. Fixing frame; 3. Mounting plate; 4. Pressure plate; 41. Top plate; 42. Insert plate; 5. Locking tongue; 6. Rotating rod; 7. Threaded rod; 8. Spring; 9. Adjusting assembly; 91. Worm gear; 92. Worm; 93. Adjusting nut; 94. Support plate; 10. Slide rod; 11. Slide groove; 12. Connecting rod; 13. First wedge; 14. Abutting rod; 15. Second wedge; 16. Slot; 17. Guide rod.
[0018] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings.
[0020] Please see Figure 1-8As shown, this embodiment provides a welded fastener for container ships, including a welded base 1 with a fixing frame 2 on its top. The fixing frame 2 has a mounting plate 3, and a rotating rod 6 is rotatably mounted through the mounting plate 3. The top of the rotating rod 6 has a locking tongue 5, and the bottom of the rotating rod 6 has an abutment rod 14. A pressure plate 4 is sleeved and movably mounted on the rotating rod 6. The pressure plate 4 is slidably mounted on the mounting plate 3. A spring 8 is sleeved on the rotating rod 6 and abuts against the mounting plate 3 and the pressure plate 4. A connecting rod 12 is movably mounted through the mounting plate 3. One end of the connecting rod is fixedly connected to the pressure plate 4, and the other end is fixedly mounted with a first wedge 13 that can abut against the abutment rod 14. The first wedge 13 has an inclined end face that can abut against the abutment rod 14 and drive the rotating rod 6 to rotate.
[0021] Specifically, in this embodiment, the fixing frame 2 is fixedly installed on the welding base 1, the mounting plate 3 is fixedly installed on the fixing frame 2, and the rotating rod 6 is rotatably mounted on the mounting plate 3 through a bearing. When fixing the corner pieces of the container, the welding base 1 is welded to the designated position on the hull according to the placement position of the container. Then, the corner hole on the container corner piece is aligned with the locking tongue 5 by the hoisting equipment. At this time, other parts of the container corner piece are in contact with the pressing plate 4. As the container corner piece is pressed down, the pressing plate 4 is pushed down and squeezes the spring 8. The pressing plate 4 drives the first wedge block 13 to push the abutment rod 14 to move through the connecting rod 12, so that the abutment rod 14 drives the rotating rod 6 to rotate. The rotating rod 6 drives the locking tongue 5 to rotate to lock the corner piece, that is, to fix the container. Similarly, when the container corner piece is disengaged from the pressing plate 4, the pressing plate 4 can be reset under the action of the spring 8. The overall structure and operation steps are simple, realize the automatic locking function during the container placement process, simplify the operation process, the mechanical linkage structure is reliable, no additional power source is required, it is adaptable to the complex environment of the ship, and has high stability.
[0022] In this embodiment, as Figure 2 , Figure 4 and Figure 5 As shown, the first wedge 13 is an arc-shaped structure coaxial with the rotating rod 6. Specifically, the bottom of the first wedge 13 has an inclined end face that abuts against the abutting rod 14. The arc-shaped first wedge 13 ensures the trajectory of the abutting rod 14 driving the rotating rod 6 to rotate, thus improving the stability of the device.
[0023] In this embodiment, as Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, a second wedge 15 is fixedly installed at the bottom of the clamping plate 4. The second wedge 15 is sleeved and movably mounted on the rotating rod 6. A guide rod 17 that abuts against the second wedge 15 is vertically fixedly installed on the rotating rod 6. The second wedge 15 has symmetrically arranged inclined end faces that can abut against the guide rod 17. The second wedge 15 is a circular ring structure coaxial with the rotating rod 6. Specifically, when the clamping plate 4 moves down, it will drive the second wedge 15 to move downward, so that the inclined end face of the second wedge 15 slides along the guide rod 17. The advantage of this is that it improves the stability of the rotation of the rotating rod 6.
[0024] In this embodiment, as Figures 1 to 8 As shown, the clamping plate 4 includes a top plate 41 and insert plates 42 fixed to both sides of the top plate 41. The top plate 41 is movably mounted on the rotating rod 6. The mounting plate 3 has a slot 16 embedded in it for the insert plates 42 to be inserted and moved. Multiple sliding rods 10 are fixedly mounted on the insert plates 42. The mounting plate 3 has a sliding groove 11 through which the sliding rods 10 can slide. The sliding groove 11 is connected to the slot 16. Specifically, when the clamping plate 4 moves down, it will drive the insert blocks to move into the slot 16, so that the sliding rods 10 slide along the sliding groove 11, thereby preventing the clamping plate 4 from shifting during the movement, enhancing the anti-torsion ability of the clamping plate 4, and preventing jamming due to uneven force. It should be noted that the sliding rods 10 are detachable structures, which are convenient for maintenance and replacement.
[0025] In this embodiment, as Figures 1 to 8 As shown, it also includes a threaded rod 7, which passes through and is movably disposed within the rotating rod 6. The top of the threaded rod 7 is fixedly connected to the locking tongue 5. The bottom of the rotating rod 6 is provided with an adjusting assembly 9 for controlling the raising and lowering of the threaded rod 7. The adjusting assembly 9 includes a worm gear 91, which is rotatably disposed at the bottom of the rotating rod 6. The worm gear 91 is sleeved and threadedly connected to the threaded rod 7. Two support plates 94 are fixedly mounted on the rotating rod 6. A worm 92 that meshes with the worm gear 91 is rotatably connected to the two support plates 94. An adjusting nut 93 is fixedly installed on the driving end of the worm 92. Specifically, in this embodiment, the corner piece will only contact the pressing plate 4 after the locking tongue 5 enters the lock hole. As the pressing plate 4 moves downward... When the locking tongue 5 moves, it will be a certain distance away from the inner wall of the corner fitting. At this time, the worm gear 92 can be rotated by rotating the adjusting nut 93. The worm gear 92 drives the worm wheel 91 to rotate. The threaded engagement between the worm wheel 91 and the threaded rod 7 causes the threaded rod 7 to move the locking tongue 5 towards the inner bottom wall of the corner fitting, so that the locking tongue 5 is pressed against the inner wall of the corner fitting, improving the fixing effect of the corner fitting. Similarly, when moving the container, the locking tongue 5 can be returned to its initial position by rotating the threaded rod 7 in the opposite direction, and then the container can be moved without affecting the rotation of the locking tongue 5. The overall operation steps are simple, and the height of the locking tongue 5 can be finely adjusted, improving the overall versatility and the fixing effect of the corner fitting.
[0026] Working principle: When securing the corner fittings of the container, the welding base 1 is welded to the designated position on the hull according to the container's placement. Then, the corner fitting holes on the container corner fittings are aligned with the locking tongue 5 using lifting equipment. At this time, other parts of the container corner fittings are in contact with the pressure plate 4. As the container corner fittings are pressed down, the pressure plate 4 is pushed downwards and compresses the spring 8. When the pressure plate 4 moves downwards, it drives the second wedge 15 downwards, causing the inclined end face of the second wedge 15 to slide along the guide rod 17. Simultaneously, the pressure plate 4, through the connecting rod 12, drives the first wedge 13 to push the abutment rod 14 to move, causing the abutment rod 14 to drive the rotating rod 6 to rotate. The rotating rod 6 drives the locking tongue 5 to rotate, thereby locking the corner fittings and securing the container. At this point, the corner fittings can be locked by rotating the locking rod 5. Turning the adjusting nut 93 drives the worm gear 92 to rotate, which in turn drives the worm wheel 91 to rotate. The threaded engagement between the worm wheel 91 and the threaded rod 7 causes the threaded rod 7 to move the locking tongue 5 toward the inner bottom wall of the corner piece, thus pressing the locking tongue 5 against the inner wall of the corner piece and improving the fixing effect of the corner piece. Similarly, when handling containers, the threaded rod 7 can be rotated in the opposite direction to move the locking tongue 5 away from the inner wall of the corner piece, and then the container can be handled. When the container corner piece is disengaged from the pressure plate 4, the pressure plate 4 and the locking tongue 5 can be reset under the action of the spring 8. The overall structure has a simple operation procedure, realizes the automatic locking function during container placement, simplifies the operation process, has a reliable mechanical linkage structure, requires no additional power source, adapts to the complex environment of ships, and has high stability.
[0027] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.
Claims
1. A welded fastener for container ships, characterized in that, include: A welding base (1) is provided with a fixing frame (2) on its top. A mounting plate (3) is provided on the fixing frame (2). A rotating rod (6) is provided through and rotatably on the mounting plate (3). A locking tongue (5) is provided at the top of the rotating rod (6). An abutment rod (14) is provided at the bottom of the rotating rod (6). A clamping plate (4) is sleeved and movably mounted on the rotating rod (6). The clamping plate (4) is slidably mounted on the mounting plate (3). A spring (8) is sleeved on the rotating rod (6) and abuts against the mounting plate (3) and the clamping plate (4). A connecting rod (12) is movably mounted through the mounting plate (3). One end of the connecting rod (12) is fixedly connected to the clamping plate (4), and the other end is fixedly mounted with a first wedge (13) that can abut against the abutting rod (14). The first wedge (13) has an inclined end face that can abut against the abutting rod (14) and drive the rotating rod (6) to rotate.
2. The welded fastener for container ships according to claim 1, characterized in that, The first wedge (13) is an arc-shaped structure coaxial with the rotating rod (6).
3. The welded fastener for container ships according to claim 1, characterized in that, The bottom of the clamping plate (4) is fixedly installed with a second wedge (15). The second wedge (15) is sleeved and movably disposed on the rotating rod (6). A guide rod (17) that abuts against the second wedge (15) is vertically fixedly installed on the rotating rod (6). The second wedge (15) is symmetrically provided with inclined end faces that abut against the guide rod (17).
4. The welded fastener for container ships according to claim 3, characterized in that, The second wedge (15) is a circular ring structure coaxial with the rotating rod (6).
5. The welded fastener for container ships according to claim 1, characterized in that, The clamping plate (4) includes a top plate (41) and insert plates (42) fixed on both sides of the top plate (41). The top plate (41) passes through and is movably mounted on the rotating rod (6). The mounting plate (3) has a slot (16) embedded in it for the insert plates (42) to be inserted and moved.
6. The welded fastener for container ships according to claim 5, characterized in that, Multiple sliding rods (10) are fixedly installed on the insert plate (42), and a sliding groove (11) is provided through the mounting plate (3) for the sliding rods (10) to slide. The sliding groove (11) is connected to the slot (16).
7. The welded fastener for container ships according to claim 1, characterized in that, It also includes a threaded rod (7), which passes through and is movably disposed within the rotating rod (6). The top of the threaded rod (7) is fixedly connected to the locking tongue (5), and the bottom of the rotating rod (6) is provided with an adjustment component (9) for controlling the lifting and lowering of the threaded rod (7).
8. The welded fastener for container ships according to claim 7, characterized in that, The adjustment component (9) includes: A worm gear (91) is rotatably disposed at the bottom of the rotating rod (6), and the worm gear (91) is sleeved and threadedly connected to the threaded rod (7); Two support plates (94) are fixedly mounted on the rotating rod (6). A worm (92) that meshes with the worm wheel (91) is rotatably connected to the two support plates (94). An adjusting nut (93) is fixedly mounted on the driving end of the worm (92).