Anchor chain ring anti-drop crosspiece

Abstract

The utility model discloses an anchor chain ring anti-drop crosspiece, the crosspiece is in a dumbbell shape with a small middle part and two large ends, the end surfaces of two ends of the crosspiece are concave arc surfaces, the concave arc surfaces are cylindrical surfaces, and an arc groove is arranged in the middle of the concave arc surface of the end surface of one end of the crosspiece. The fixing device is simple in structure and reliable in fixation. When the anchor chain ring pressing crosspiece is formed, a protrusion which is matched with the arc-shaped groove in one end of the crosspiece in shape and longer than 5 mm is formed in the center of the pressing crosspiece in a non-welding area of the anchor chain ring pressing crosspiece, and the protrusion extends into the arc-shaped groove, so that a mortise and tenon joint structure is added to the crosspiece, and double insurance is added on the basis of an original welding fixing crosspiece and an original indentation fixing crosspiece. Even if the gap caused by corrosion and fatigue is larger than 5 mm, the crosspiece cannot fall off, and serious chain ring deformation or breakage cannot be caused, so that normal use of the anchor chain is guaranteed, and the service life of the anchor chain can be prolonged.

Description

Technical Field

[0001] The utility model relates to a studded anchor chain, in particular to a studded anchor chain ring which is not easy to loosen, and belongs to the technical field of anchoring and mooring equipment. Background Art

[0002] There are two ways to fix the crossbars of anchor chains: the first is to weld them, such as Figure 1 、 Figure 2 and Figure 3 As shown, one end of the crosspiece 20 is welded to the body of the anchor chain link 10 in a non-welded area. This method is commonly used for marine anchor chains and low-grade mooring chains such as R3 and R3S. The second method relies on the depth of the indentation between the crosspiece end face and the link base material to achieve the crosspiece. The indentation depth is generally 2mm to 5mm and is mainly used for high-strength mooring anchor chains above R3S. Whether welded or indented, during the use of a crosspiece anchor chain, corrosion and the alternating forces of the tide will quickly create a gap between the crosspiece end and the base material, causing the crosspiece to fall off. Once the crosspiece falls off, the chain will fail or even break suddenly during use. Utility Model Content

[0003] The utility model aims to provide an anchor chain ring anti-falling crosspiece with a simple structure and reliable fixation.

[0004] The utility model is achieved through the following technical solutions:

[0005] The utility model relates to an anti-drop crosspiece for an anchor chain ring. The crosspiece is in the shape of a dumbbell with a small middle and large ends. The end faces of the crosspiece are concave arc surfaces, which are cylindrical surfaces. An arc-shaped pit is provided in the middle of the concave arc surface of the end face of one end of the crosspiece.

[0006] The purpose of the utility model can be further achieved by the following technical measures.

[0007] In the aforementioned anchor chain ring anti-slip crosspiece, the curvature radius r of the arc-shaped pit is 0.2 to 0.3 times the radius R of the concave arc surface.

[0008] The aforementioned anchor chain ring anti-drop crosspiece, wherein the depth h of the arc-shaped pit is 5mm to 6mm.

[0009] The aforementioned anchor chain ring anti-drop crosspiece, wherein the arc-shaped pit has a smooth transition around the concave arc surface, and the radius r1 of the transition arc is greater than 6 mm.

[0010] The aforementioned anchor chain ring anti-drop crosspiece, wherein the radius r1 of the transition arc is greater than 10% of the anchor chain ring diameter.

[0011] The utility model has a simple structure and reliable fixation. When the anchor chain link pressure bar is formed, a protrusion with a length greater than 5 mm that matches the shape of the arc-shaped recess at one end of the crossbar is generated at the center of the pressure bar in the non-welded area. The protrusion extends into the arc-shaped recess, thereby adding a mortise and tenon structure to the crossbar, adding a double insurance on the basis of the original welding fixation bar and the indentation fixation bar. Even if the gap due to corrosion and fatigue is greater than 5 mm, the crossbar will not fall off, and will not cause serious chain ring deformation or breakage, thereby ensuring the normal use of the anchor chain and extending the service life of the anchor chain.

[0012] Advantages and features of the present invention will be illustrated and explained through the following non-limiting description of preferred embodiments, which are given as examples only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an existing anchor chain ring crossbar that is fixed by welding;

[0014] Figure 2 yes Figure 1 A top view of

[0015] Figure 3 This is a schematic diagram of the structure of an existing anchor chain that is fixed by welding;

[0016] Figure 4 It is a structural diagram of the utility model;

[0017] Figure 5 yes Figure 4 A top view of

[0018] Figure 6 yes Figure 4 Right view;

[0019] Figure 7 It is a structural schematic diagram of fixing the utility model on an anchor chain ring. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] This embodiment is described by taking the anchor chain ring cross piece fixed by welding as an example.

[0022] like Figure 4 、 Figure 5 and Figure 6As shown, the crosspiece 1 of the present invention is dumbbell-shaped, smaller in the middle and larger at both ends. Each end surface of the crosspiece 1 is a cylindrical concave arc surface 11. A circular arc-shaped recess 12 is located in the middle of the concave arc surface 11 at one end of the crosspiece 1. The radius of curvature r of the circular arc recess 12 is 0.2 to 0.3 times the radius R of the concave arc surface 11, and the depth h of the circular arc recess 12 is 5 to 6 mm. In this embodiment, r is 0.25 times R, and h is 5.3 mm. The perimeter of the circular arc recess 12 smoothly transitions to the concave arc surface 11. The radius r1 of the transition arc is greater than 6 mm or greater than 10% of the diameter of the anchor chain link, whichever is greater. This ensures that stress concentration does not occur at the edge of the raised portion of the link material, which could affect the product's lifespan.

[0023] like Figure 7 As shown, when the anchor chain link 2 is pressed and formed, one end of the crosspiece 1, which is provided with an arcuate recess 12, is aligned with the center of the pressing section in the non-welded area of ​​the anchor chain link 2. Since the crosspiece 1 is at room temperature while the anchor chain link 2 is at a high temperature, a protrusion 21 with a shape matching the arcuate recess 12 and a length greater than 5 mm is generated in the center of the pressing section in the non-welded area of ​​the anchor chain link 2 during the pressing process. The protrusion 21 extends into the arcuate recess 12, thereby adding a mortise and tenon structure to the crosspiece 1. Similarly, the structure of the anchor chain link crosspiece fixed by indentation is consistent with the above solution.

[0024] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. An anchor chain ring anti-drop crosspiece, the crosspiece is dumbbell-shaped with a small center and large ends, and the end surfaces of the crosspiece are concave arc surfaces, and the concave arc surfaces are cylindrical surfaces, characterized in that: A circular arc-shaped pit is provided in the middle of the concave arc surface of one end face of the crossbar.

2. The anchor chain ring anti-drop crosspiece according to claim 1, characterized in that: The curvature radius r of the arc-shaped pit is 0.2 to 0.3 times the radius R of the concave arc surface.

3. The anchor chain ring anti-drop crosspiece according to claim 1, characterized in that: The depth h of the arc-shaped pit is 5 mm to 6 mm.

4. The anchor chain ring anti-drop crosspiece according to claim 1, characterized in that: The arc-shaped pit has a smooth transition around the concave arc surface, and the radius r1 of the transition arc is greater than 6 mm.

5. The anchor chain ring anti-drop crosspiece according to claim 4, characterized in that: The radius r1 of the transition arc is greater than 10% of the diameter of the anchor chain ring.

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