Special pipeline fastener for metallurgical equipment

Abstract

The utility model discloses a special pipeline fastener for metallurgical equipment, which relates to the technical field of fasteners and comprises an arc-shaped clamping plate. The arc-shaped elastic cushion is fixed on the inner curved surface of the arc-shaped clamping plate and comprises a plurality of conical grooves, the conical grooves are formed in the thickness direction of the arc-shaped elastic cushion, and the opening ends of the conical grooves face the inner curved surface of the arc-shaped clamping plate; the arc transition surface is formed between the opening end of the conical groove and the inner curved surface of the arc-shaped elastic cushion; and the multiple convex claws are arranged in the circumferential direction of the arc transition face at intervals, and the free end of each convex claw points to the depth direction of the conical groove. Deformation directional control is achieved through the conical groove structure, and a uniform friction locking layer is generated firstly. Along with the increase of the clamping force, the bias convex claws cut into the pipe wall to form axially staggered mechanical occlusion points, and stage grasping is formed through the synergistic effect of frictional resistance and mechanical occlusion force, so that the thermal expansion displacement of the pipeline is effectively prevented, and the anti-loosening capability is improved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically a special pipe fastener for metallurgical equipment. Background Technology

[0002] Fasteners are fundamental components widely used in mechanical connections across various industries, including energy, electronics, machinery, and chemicals. They play a crucial role in the construction of various machines, equipment, vehicles, ships, and bridges. In metallurgical equipment, fasteners are commonly used for pipe connections and fixation, making them an indispensable core component in industry.

[0003] Existing pipe fasteners typically use a combination of curved clamps and rubber pads for securing the pipes. However, due to the uniform pressure applied by the rubber pads, the gripping force distribution is relatively uniform, and slippage is prone to occur in vibrating environments, affecting the stability of the pipe fasteners. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a special pipe fastener for metallurgical equipment.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A special pipe fastener for metallurgical equipment, comprising:

[0007] Curved clamp;

[0008] An arc-shaped elastic pad, fixed to the inner curved surface of an arc-shaped clamping plate, the arc-shaped elastic pad comprising:

[0009] Multiple conical grooves are formed in the thickness direction of the arc-shaped elastic pad, with the opening ends facing the inner curved surface of the arc-shaped clamping plate;

[0010] An arc transition surface is formed between the open end of the conical groove and the inner curved surface of the arc-shaped elastic pad;

[0011] Multiple protruding claws are arranged circumferentially along the arc transition surface, with the free end of each protruding claw pointing towards the depth direction of the conical groove;

[0012] When the arc-shaped clamping plate is subjected to external force to clamp the pipe, the arc-shaped elastic pad is compressed, causing the conical groove to deform radially. This causes the arc transition surface to expand outward and drives the claw to deflect and cut into the micro-engagement pit outside the pipe wall, forming a staged grip on the pipe wall.

[0013] Preferably, the bottom wall thickness of the conical groove is greater than the wall thickness of its opening end sidewall. When the arc-shaped elastic pad is compressed and undergoes radial deformation, the sidewalls near the opening end of each conical groove will produce differentiated elastic bending deformation due to the non-uniform wall thickness structure.

[0014] Preferably, the deviation angle between the extension line of the free end of the protruding claw and the central axis of the conical groove is 15°-60°, and the deviation direction of each protruding claw is consistent.

[0015] Preferably, when the conical groove undergoes radial deformation, the arc transition surface gradually changes from an arc surface to a plane.

[0016] Preferably, the protruding claw fixing end is located on one side of the conical groove at the center of the arc transition surface, so that the arc transition surface faces the protruding claw and contacts the pipe wall.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention achieves deformation orientation control through a conical groove structure, first generating a uniform friction locking layer. As the clamping force increases, the offset convex claws cut into the pipe wall, forming axially staggered mechanical engagement points. Through the synergistic effect of frictional resistance and mechanical engagement force, a staged grip is formed, effectively preventing pipe thermal expansion displacement and improving the anti-loosening capability. Attached Figure Description

[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This utility model Figure 1 A magnified structural diagram of A in the middle;

[0022] Figure 3 This utility model Figure 1 Schematic diagram of the deformation and local cross-section of the pipeline;

[0023] Figure 4 This utility model Figure 3 A magnified structural diagram of B in the diagram;

[0024] Figure 5 This is a partial structural schematic diagram of the present invention.

[0025] The diagram shows: 1. Arc-shaped clamping plate; 2. Arc-shaped elastic pad; 21. Conical groove; 22. Arc-shaped transition surface; 23. Protruding claw. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] Example

[0028] like Figures 1-5 As shown, a special pipe fastener for metallurgical equipment includes:

[0029] Arc-shaped clamp 1;

[0030] An arc-shaped elastic pad 2 is fixed to the inner curved surface of the arc-shaped clamping plate 1. The arc-shaped elastic pad 2 includes:

[0031] Multiple conical grooves 21 are formed in the thickness direction of the arc-shaped elastic pad 2, and the opening ends face the inner curved surface of the arc-shaped clamping plate 1.

[0032] The arc transition surface 22 is formed between the opening end of the conical groove 21 and the inner curved surface of the arc elastic pad 2. When the conical groove 21 undergoes radial deformation, the arc transition surface 22 gradually changes from an arc surface to a plane.

[0033] Multiple protruding claws 23 are arranged circumferentially along the arc transition surface 22. The free end of each protruding claw 23 points to the depth direction of the conical groove 21. The fixed end of the protruding claw 23 is located on one side of the center of the arc transition surface 22, which is offset from the conical groove 21, so that the arc transition surface 22 contacts the pipe wall before the protruding claw 23.

[0034] When the arc-shaped clamp 1 clamps the pipe under external force, the arc-shaped elastic pad 2 is compressed, causing the conical groove 21 to deform radially, which causes the arc transition surface 22 to expand outward and drive the claw 23 to deflect and cut into the micro-engagement pit outside the pipe wall, forming a staged grip on the pipe wall.

[0035] Pairs of arc-shaped clamps 1 clamp the pipe under external force. The arc-shaped elastic pad 2, under pressure, causes radial deformation of the conical groove 21. Under radial pressure, the thin-walled opening end of the conical groove 21 forces the arc transition surface 22 to flatten, increasing the surface area and expanding the plane to compress the pipe wall. Utilizing the elastic contraction of the material itself, a first-level uniformly distributed frictional resistance is generated. The expansion of the arc transition surface 22 pushes the root fulcrum of the claw 23 forward, and the free end spirals into the micro-engaging pit outside the pipe wall along the deviation angle, generating a mechanical interlocking force, thus creating a second-level uniformly distributed frictional resistance. Through the synergistic effect of frictional resistance and mechanical engagement force, a phased gripping effect is achieved.

[0036] The bottom wall thickness of the conical groove 21 is greater than the wall thickness of its opening end sidewall. When the arc-shaped elastic pad 2 is compressed and undergoes radial deformation, the sidewalls near the opening end of each conical groove 21 will produce differentiated elastic bending deformation due to the non-uniform wall thickness structure.

[0037] Through the non-uniform wall thickness structure of the conical groove 21, the wall thickness at the bottom of the groove is greater than the wall thickness at the opening end to achieve deformation orientation control, so that the radial clamping force is converted into the expansion motion of the arc transition surface 22, and a uniform friction locking layer covering the pipe is generated first.

[0038] The deviation angle between the extension line of the free end of the protruding claw 23 and the central axis of the conical groove 21 is 15°-60°, and the deviation direction of each protruding claw 23 is consistent.

[0039] When the clamping force increases, the offset claw 23 spins into the pipe wall at an offset angle of 15°-60°, forming axially staggered mechanical engagement points. The frictional resistance and mechanical engagement force work together to resist the thermal expansion displacement of the metallurgical pipeline, thereby improving the anti-loosening ability.

[0040] When the pipe expands thermally, the increased pipe diameter compresses the opening end of the conical groove 21, causing the arc transition surface 22 to expand secondaryly. The deflection angle of the claw 23 increases adaptively with temperature by 5°-10°, and the engagement depth also increases, thereby enhancing the locking force per temperature rise and solving the stress relaxation problem under thermal cycling conditions. The axially staggered engagement points of the claw 23 form a mechanical labyrinth lock structure, dispersing vibration stress. The gradient wall thickness design of the conical groove 21 keeps the stress concentration area away from the high-temperature pipe wall.

[0041] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A special pipe fastener for metallurgical equipment, characterized in that, include: Arc-shaped clamp (1); An arc-shaped elastic pad (2) is fixed to the inner curved surface of the arc-shaped clamping plate (1), the arc-shaped elastic pad (2) comprising: Multiple conical grooves (21) are formed in the thickness direction of the arc-shaped elastic pad (2), and the opening ends face the inner curved surface of the arc-shaped clamp (1); The arc transition surface (22) is formed between the open end of the conical groove (21) and the inner curved surface of the arc elastic pad (2); Multiple protruding claws (23) are arranged circumferentially along the arc transition surface (22), and the free end of each protruding claw (23) points to the depth direction of the conical groove (21); When the arc-shaped clamp (1) clamps the pipe under external force, the arc-shaped elastic pad (2) is pressed, causing the conical groove (21) to deform radially, which causes the arc transition surface (22) to expand outward and drive the claw (23) to deflect and cut into the micro-engagement pit outside the pipe wall, forming a staged grip on the pipe wall.

2. The special pipe fastener for metallurgical equipment according to claim 1, characterized in that: The bottom wall thickness of the conical groove (21) is greater than the wall thickness of its opening end sidewall. When the arc-shaped elastic pad (2) is compressed and undergoes radial deformation, the sidewall near the opening end of each conical groove (21) will undergo differentiated elastic bending deformation due to the non-uniform wall thickness structure.

3. The special pipe fastener for metallurgical equipment according to claim 1, characterized in that: The extension line of the free end of the protruding claw (23) deviates from the central axis of the conical groove (21) by an angle of 15°-60°, and the deviation direction of each protruding claw (23) is consistent.

4. The special pipe fastener for metallurgical equipment according to claim 1, characterized in that: When the conical groove (21) undergoes radial deformation, the arc transition surface (22) gradually changes from an arc surface to a plane.

5. A special pipe fastener for metallurgical equipment according to claim 1, characterized in that: The fixed end of the protruding claw (23) is located on one side of the conical groove (21) at the center of the arc transition surface (22), so that the arc transition surface (22) contacts the pipe wall before the protruding claw (23).

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