Rope tethering assembly

Abstract

The utility model provides a silk rope mooring assembly. The silk rope mooring assembly includes a loop formed at a longitudinal end, and a strain indicator collar is received and retained within the loop.

Description

Technical Field

[0001] This utility model relates to fall protection hardware, and more specifically, to a wire rope tethering assembly having a collar with an energy absorption structure. Background Technology

[0002] In conventional applications of wire ropes (such as bundling, lifting, and towing), the longitudinal end of the wire rope can be folded back to form a loop and secured to the rope, with a crimped sleeve. A connector (such as a shackle) can then be threaded through this loop and connected to the wire rope. The thimble reinforces the wire rope loop from the inside, preventing excessive bending when the rope is under stress. Existing thimbles typically consist of two arms angled at an acute angle, forming a teardrop shape via an arc-shaped connector.

[0003] In high-altitude operations, wire rope tethers are often used to secure hand tools to prevent them from falling. For example, one end of the tether is connected to a user-worn strap, and the other end is connected to the hand tool. Therefore, similar to the aforementioned prior art, there is an urgent need to manufacture safe and reliable wire rope connections capable of withstanding the braking impact load of falling objects. One objective of this invention is to address this need, or more broadly, to provide an improved tether for fall protection applications. Utility Model Content

[0004] According to one aspect of the present invention, a wire rope tethering assembly is provided, comprising:

[0005] A silk rope with a longitudinal end;

[0006] The loop formed at the longitudinal end;

[0007] The collar, integrally molded, comprises a pair of parallel legs connected by an arc-shaped portion, forming a U-shaped structure, wherein...

[0008] Each leg is tubular, surrounding a through hole extending along the axis of the opening;

[0009] The arc-shaped portion includes a convex surface, on which a circumferentially extending channel is provided, and each through hole is tangentially aligned with the corresponding end of the channel;

[0010] When the rope segment forming the loop is accommodated in the through hole, the collar is held in the loop.

[0011] Preferably, the cross-section of the arc-shaped portion is concave-convex.

[0012] Preferably, the wall thickness of the tubular component is the same as the thickness of the arcuate portion.

[0013] Preferably, the axis is straight. Alternatively, the axis may include an arc-shaped portion.

[0014] Preferably, the arc-shaped portion is substantially semi-circular.

[0015] This invention provides an effective and efficient safety device that is economically manufactured and has a simple overall design, which can minimize manufacturing costs and achieve optimal performance. Attached Figure Description

[0016] The preferred embodiments of this utility model will now be described by way of example with reference to the accompanying drawings, wherein:

[0017] Figures 1 to 6 The top view, left view, front view, right view, rear view, and bottom orthogonal view of a collar according to one embodiment of the present invention are shown respectively, wherein... Figure 2 , 5 and 6 respectively along Figure 3 and 4 Cut along planes 2, 5, and 6 as indicated in the middle;

[0018] Figure 7 for Figures 1 to 6 Perspective view of the collar shown;

[0019] Figure 8 and Figure 9 These include Figures 1 to 6 Perspective and front views of the wire rope tethering component of the collar shown;

[0020] Figure 10 and Figure 11 yes Figure 8 and Figure 9 The wire rope tethering device shown is a front view after being subjected to tensile overload. Detailed Implementation

[0021] like Figure 8 As shown optimally, the wire rope tethering assembly 10 includes a wire rope 11 having a longitudinal end 13, at which a loop 12 is formed. This is achieved by folding the longitudinal end 13 back and securing it to the wire rope 11 with a crimp sleeve 14. The loop 12 extends through a collar 15, securing the collar 15 to the wire rope 11.

[0022] Reference Figures 1 to 7 The collar 15 may be a one-piece component made of metal (such as chrome steel), comprising a pair of parallel legs 16a, 16b connected by an arcuate portion 17, forming a U-shaped structure with reflective and rotational symmetry about axis 18. Each leg 16a, 16b is tubular and surrounds its respective through holes 19a, 19b, which extend along their respective opening axes parallel to axis 18.

[0023] The arcuate portion 17 includes a convex surface, and the channel 20 extends circumferentially from said convex surface. The channel 20, like the through holes 19a, 19b, has a shape complementary to the shape of the wire 11 housed therein. The arcuate portion 17 is generally semi-circular to tangentially connect the legs 16a, 16b, such that each through hole 19a, 19b is tangentially aligned with the corresponding end of the channel 20. At the inner ends of the legs 16a, 16b, a rounded corner 21 provides a smooth transition from the tubular structure to the channel 20. After this rounded corner transition area, the channel 20 may have a substantially constant cross-section along its length. The cross-section of the arcuate portion 17 may include a convex surface opposite to the concave surface defining the channel 20, forming a concave-convex structure. The wall thickness of the tubular legs 16a, 16b may be consistent with the thickness of this concave-convex structure.

[0024] like Figures 8 to 11 As shown, the longitudinal end 13 enters through one of the through holes 19a and 19b, proceeds along the channel 20, and then exits through the other through hole 19a and 19b, forming a loop 12. When the wire rope 11 is thus accommodated in the through holes 19a and 19b, the collar is held within the loop 12.

[0025] The lengths of legs 16a and 16b can be set to 2 to 3 times the diameter of the wire rope, providing sufficient length for technicians to visually assess their parallelism. Clear markings on the outer surfaces of legs 16a and 16b draw attention to them. The size of loop 12 is designed to be small enough that the longitudinal end 13 remains substantially within the channel 20 along its length, while avoiding sharp bends in the wire rope where it exits through holes 19a and 19b (e.g., ...). Figure 9 (As shown in the best). Figure 9 It also shows that during fall braking, the tensile impact load F applied to the wire rope tether assembly 10 is aligned with the axis 18. When the load F is sufficiently high, as the collar 15 absorbs energy and undergoes plastic deformation, its elastic limit will be exceeded, such as... Figure 10 and 11 As shown, the curved portion 17 will bend and the legs 16a and 16b will move closer together. Any degree of bending in the curved portion 17 can provide the user with an indication that the mooring assembly 10 is overloaded and should be replaced for safety reasons. The degree of bending or strain illustrated can be easily judged visually, especially when the cord loop 12 tends to separate from the channel 20, such as... Figure 11 As shown. However, bending can also be evaluated to provide a tolerance range, similar to a go / no go gauge. This invention thus provides a simple and efficient safety device.

[0026] This utility model is only illustrative in its various aspects, and it should be understood that modifications and additions can be made without departing from the scope of the utility model.

Claims

1. A wire rope tethering assembly, characterized in that, The wire tethering assembly includes: A silk rope with a longitudinal end; The loop formed at the longitudinal end; The collar, integrally molded, comprises a pair of parallel legs connected by an arc-shaped portion, forming a U-shaped structure, wherein... Each leg is tubular, surrounding a through hole extending along the axis of the opening; The arc-shaped portion includes a convex surface, on which a circumferentially extending channel is provided, and each through hole is tangentially aligned with the corresponding end of the channel; When the rope segment forming the loop is accommodated in the through hole, the collar is held in the loop.

2. The wire rope tethering assembly according to claim 1, characterized in that, The cross-section of the arc-shaped portion is concave and convex.

3. The wire rope tethering assembly according to claim 1 or 2, characterized in that, The wall thickness of the tubular component is the same as the thickness of the arc-shaped portion.

4. The wire rope tethering assembly according to claim 1 or 2, characterized in that, The axis is a straight line.

5. The wire rope tethering assembly according to claim 1 or 2, characterized in that, The arc-shaped portion is basically semi-circular.

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