Embedded traction assembly and anti-bending barrel

Abstract

The utility model discloses an embedded traction assembly which comprises an embedded flange and a steel wire rope, the section of the embedded flange is in an L shape, one end of the steel wire rope is fixed to the upper portion of the outer surface of the embedded flange through a steel wire pressing plate, the other end of the steel wire rope is provided with a traction buckle, and the steel wire rope close to one side of the traction buckle is further provided with an anti-tearing stirrup. The utility model further discloses an anti-bending barrel which is cast and molded together with the embedded traction assembly through a polyurethane material. The traction performance and the bending resistance of the bending-resistant barrel can be improved, the preparation difficulty is greatly reduced, and the yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending-resistant barrels, and particularly relates to an embedded traction component and a bending-resistant barrel. Background Art

[0002] A bending-resistant barrel is a product that can cooperate with components to protect submarine cables, and is usually used in the front and rear parts of a perforated submarine cable protection device for a wind turbine monopile foundation; it is the front-end structure for traction operation, and its function is to cooperate with a traction head for overall pulling operation during installation; the existing bending-resistant barrel is internally composed of a U-shaped embedded flange and a steel wire rope.

[0003] During the use of the existing bending-resistant barrel, the following problems exist:

[0004] 1. The steel wire rope inside the existing bending-resistant barrel needs to pass through and out of two holes above the U-shaped embedded flange to form a loop, and the steel wire rope is used to lift the insert to lift the steel wire rope. Due to the pulling force, the steel wire rope is usually made of pure steel wire, and its bending performance is poor, which is not convenient for perforating and looping.

[0005] 2. During the pouring process of the bending-resistant barrel, the steel wire rope is in a free state and is only positioned manually, so there is a risk that the steel wire rope will penetrate through the polyurethane layer.

[0006] 3. During the traction operation, the angle of the pulling steel wire rope is not in the same direction as the central axis of the bending-resistant barrel, and there is a large range of angles. The steel wire rope is likely to generate a large shear force on the polyurethane layer at the head of the bending-resistant barrel, and there is a possibility that the steel wire rope will tear the bending-resistant barrel, with a relatively high risk. Summary of the Invention

[0007] The technical problem to be solved by the utility model is to provide an embedded traction component and a bending-resistant barrel, which can improve the pulling performance and bending resistance of the bending-resistant barrel, and greatly reduce the preparation difficulty, and improve the yield rate.

[0008] To solve the above technical problems, the utility model provides an embedded traction component, including an embedded flange and a steel wire rope. The cross-section of the embedded flange is L-shaped. One end of the steel wire rope is fixed to the upper part of the outer surface of the embedded flange through a steel wire pressing plate, and the other end of the steel wire rope is provided with a traction buckle. An anti-tearing stirrup is also arranged on the steel wire rope near the traction buckle.

[0009] Further, the steel wire pressing plate is welded to the embedded flange as a whole.

[0010] Further, positioning strengthening convex parts are arranged on the surface of the embedded flange around the steel wire pressing plate.

[0011] Further, a sleeve ring is arranged on one side of the anti-tearing stirrup, and the anti-tearing stirrup is sleeved on the steel wire rope through the sleeve ring.

[0012] Furthermore, the surface of the embedded flange and the surface of the wire pressing block are both coated with polyurethane adhesive.

[0013] Furthermore, the towing buckle is formed by the cooperation and fixation of a heart-shaped loop and a U-shaped buckle.

[0014] Furthermore, an 8-shaped buckle is also arranged on the towing buckle.

[0015] A bending-resistant barrel includes a casting body, and the above-mentioned embedded traction assembly is arranged in the casting body.

[0016] Furthermore, the embedded flange is arranged at the bottom of the casting body, and the anti-tearing stirrup is arranged at a position close to the top in the casting body.

[0017] Furthermore, the part of the steel wire rope in the casting body is a pre-tightened straight section.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. The tail of the steel wire rope is fixed by being pressed tightly by the wire pressing block, omitting the original step of perforating and winding for fixation, and solving the inconvenience caused by perforating and winding, improving production efficiency and ensuring product quality;

[0020] 2. By adding a new anti-tearing stirrup, the unilateral shearing of the polyurethane layer of the bending-resistant barrel by the steel wire rope is changed to a whole-circle stretching, avoiding the situation that the steel wire rope shears and tears the polyurethane during the process of pulling the steel wire rope;

[0021] 3. The cross-section of the embedded flange is changed from the original U-shaped to L-shaped, that is, the convex ring on one side inside the bending-resistant barrel is removed. At this position, the thickness of the polyurethane is guaranteed, and the situation that the polyurethane layer is damaged due to stress concentration during the process of being pulled by external force will not occur;

[0022] 4. A heart-shaped ring is newly added to the loop at the head of the steel wire rope, and the stable fitting arrangement effectively avoids the situation that the internal steel wires of the steel wire rope are scattered, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the embedded traction assembly of the utility model;

[0024] Figure 2 is a schematic structural diagram of the connection between the embedded flange and the steel wire rope of the utility model;

[0025] Figure 3 is a schematic structural diagram of the towing buckle at the end of the steel wire rope of the utility model;

[0026] Figure 4 is a schematic structural diagram of the bending-resistant barrel of the utility model. DETAILED DESCRIPTION OF THE INVENTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Reference Figures 1 to 3 As shown, an embodiment of the embedded traction component 1 of the utility model includes an embedded flange 2 and a steel wire rope 3. The embedded flange has an L-shaped cross section. One end of the steel wire rope is fixed to the upper part of the outer surface of the embedded flange by a steel wire pressing plate 4. The other end of the steel wire rope is provided with a traction buckle 5. The steel wire rope near the traction buckle is also provided with an anti-tear stirrup 6. The embedded traction component is used to be arranged in a preparation mold and formed into a product by pouring a polyurethane material. The embedded traction component forms a good traction structure and an installation connection structure inside the product, and has a good traction effect, which improves the pulling performance and anti-bending performance of the anti-bending barrel product. The cross-section of the embedded flange is L-shaped, which omits a convex ring structure compared to the U-shaped cross-section. In the anti-bending barrel structure, the wall thickness of the polyurethane layer of the anti-bending barrel at the position of the convex ring structure is thinner, while the L-shaped structure does not have the convex ring structure here, which can ensure the wall thickness. Therefore, during the process of external force pulling, stress concentration will not cause damage; the tear-resistant stirrups can change the unilateral shear force applied by the wire rope to the product into a full circle stretching, effectively avoiding the tearing of polyurethane during the pulling force process.

[0029] Among them, the wire pressing plate is welded to the embedded flange as a whole, and the wire pressing plate presses and fixes the wire rope on the surface of the embedded flange, which is convenient to operate, has good stability, and effectively improves production efficiency. A positioning reinforcement convex portion 7 is provided on the surface of the embedded flange around the wire pressing plate. The positioning reinforcement convex portion is arranged around the periphery of the wire pressing plate, which can play a positioning effect. The installation position of the wire pressing plate is fixed, which further improves the convenience of operation, and the force bearing capacity at this position is enhanced. The structure of the positioning reinforcement convex portion should not be made into a right-angle edge, but should be designed with rounded corners to improve the quality of polyurethane casting.

[0030] Polyurethane adhesive is also applied on the surface of the embedded flange and the surface of the steel wire block to improve the bonding strength with the polyurethane material during the subsequent preparation of the product.

[0031] The above-mentioned traction buckle is formed by winding a heart-shaped ring 8 and fixing it with a U-shaped buckle 9. An 8-shaped buckle 10 is also provided on the traction buckle. The heart-shaped ring can restrain the wire rope and effectively prevent the steel wire inside the wire rope from spreading. The U-shaped buckle is used to fix the wound wire rope and is reinforced by the 8-shaped buckle to ensure the overall strength of the traction buckle.

[0032] The present application also discloses a bending-resistant barrel, referring to Figure 4As shown in the figure, it includes a casting body 11. The above-mentioned embedded traction component is arranged inside the casting body. The embedded flange is arranged at the bottom of the casting body. The anti-tearing stirrup is arranged at a position near the top inside the casting body. The part of the steel wire rope inside the casting body is a pre-tightened straight section.

[0033] During the preparation, first place one end of the steel wire rope at the outer circumference of the upper end of the embedded flange as required. Align the groove direction of the steel wire pressing block with the steel wire rope, and use a hydraulic device to press the steel wire pressing block inward against the outer surface of the embedded flange. The hydraulic device maintains the pressure, and use a welding device to weld and fix both sides of the steel wire pressing block to the embedded flange as a whole. At this time, the steel wire rope can be firmly fixed at the outer circumference of the upper end of the embedded flange.

[0034] After the welding naturally cools down, first check the weld quality. After the welding meets the standard, use a sandblaster to perform sandblasting and degreasing operations on the surface of the embedded flange and the steel wire pressing block. After the sandblasting operation, brush polyurethane adhesive on the surface of the embedded flange and the steel wire pressing block.

[0035] Subsequently, place the embedded flange and the steel wire pressing block into the bending-resistant barrel casting mold in advance. The head of the steel wire rope passes through the hole reserved above the mold. Then use a hydraulic device to apply tension to the steel wire rope. When the pre-tension of the steel wire rope is in place, use nuts and pressing blocks to temporarily fix the steel wire, maintain the pre-tension of the steel wire rope, so that the position of the steel wire rope in the mold remains unchanged, and the steel wire rope remains in a straightened straight state in the mold.

[0036] Then place the whole into the oven for preheating operation. After the temperature reaches the required value, pull out the preheated mold from the oven, pour liquid casting polyurethane into the cavity of the mold. When the polyurethane liquid level is about to reach the top of the mold, place the anti-tearing stirrup on the surface of the polyurethane liquid. Due to the high viscosity and surface tension of the polyurethane liquid, the anti-tearing stirrup will only sink slightly and will not sink to the bottom. Continue to pour polyurethane until the required height.

[0037] Push it back into the oven for vulcanization operation. After the vulcanization operation, the polyurethane changes from liquid to solid. After the hardness meets the standard, perform demolding operation and place it in the air to cool naturally.

[0038] After cooling, wind the steel wire rope exposed on the solid polyurethane (casting body) along the heart-shaped loop as required, and fix the steel wire rope with a U-shaped buckle. Finally, strengthen it with an 8-shaped buckle to complete the preparation.

[0039] Compared with the existing preparation structure and method, in the connection between the steel wire rope and the embedded flange of this application, the steel wire rope does not need to be bent, and it can be completed with the help of a hydraulic device.

[0040] In one embodiment, a collar can also be provided on one side of the anti-tearing stirrup. The anti-tearing stirrup is sleeved on the steel wire rope through the collar. By using the steel wire rope as the placement reference, the accuracy of the placement position of the anti-tearing stirrup is effectively improved, and the force applied in the radial direction of the steel wire rope can be quickly applied to the anti-tearing stirrup through the collar, further improving the uniformity and stability of the force distribution.

[0041] The above-described embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are within the protection scope of the present invention.

Claims

1. An embedded traction component, characterized in that It includes an embedded flange and a steel wire rope. The cross-section of the embedded flange is L-shaped. One end of the steel wire rope is fixed to the upper part of the outer surface of the embedded flange through a steel wire pressing plate, and the other end of the steel wire rope is provided with a traction buckle. A tear-proof stirrup is also arranged on the steel wire rope near the traction buckle side.

2. The embedded traction assembly according to claim 1, wherein, The steel wire pressing plate is welded to the embedded flange as a whole.

3. The embedded traction assembly according to claim 2, wherein There are positioning and strengthening convex parts on the surface of the embedded flange around the steel wire pressing plate.

4. The embedded traction assembly according to claim 1, wherein A collar is arranged on one side of the tear-proof stirrup, and the tear-proof stirrup is sleeved on the steel wire rope through the collar.

5. The embedded traction assembly according to claim 1, wherein The surfaces of the embedded flange and the steel wire pressing block are both painted with polyurethane adhesive.

6. The embedded traction assembly according to claim 1, wherein The traction buckle is formed by the cooperation of a thimble loop and a U-shaped buckle.

7. The embedded traction assembly according to claim 6, characterized in that An 8-shaped buckle is also arranged on the traction buckle.

8. A bending-resistant barrel, characterized in that, It includes a casting body, and an embedded traction component as described in any one of claims 1-7 is arranged in the casting body.

9. The bending-resistant barrel according to claim 8, wherein, The embedded flange is arranged at the bottom of the casting body, and the tear-proof stirrup is arranged at a position near the top in the casting body.

10. The bend-resistant barrel according to claim 8, wherein The part of the steel wire rope in the casting body is a pre-tightened straight section.

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