A type of pipe lifting sling

Abstract

This utility model discloses a pipe lifting sling, belonging to the technical field of lifting slings. It includes two lifting slings, each with a connecting plate fixedly installed at one end. A fixing frame for limiting the other end of the lifting sling is fixedly installed on one side of the connecting plate. Sliding rods are also included. Sliding rods are fixedly installed at the ends of the two connecting plates away from the lifting slings. Guide tubes are slidably sleeved on the outer walls of both sliding rods, and threaded holes are opened at the ends of the two sliding rods away from the connecting plates. Drive rods are rotatably installed in the inner cavities of both threaded holes. Through the coordinated use of these devices, when lifting a pipe, the two lifting slings wrap around the outside of the pipe, and then the hook and lifting ring of the lifting equipment are connected to each other to achieve pipe lifting. This avoids significant tilting or swinging of the pipe due to a shift in the center of gravity during lifting, prevents the pipe from breaking due to impact with surrounding equipment or the lifting slings during lifting, and avoids damage to the pipe due to lifting.

Description

Technical Field

[0001] This utility model relates to the field of lifting sling technology, specifically a pipeline lifting sling. Background Technology

[0002] Pipe lifting slings are lifting tools specifically designed for the safe lifting, handling, and installation of pipes (such as steel pipes and concrete pipes). They are typically made of high-strength synthetic fibers (such as polyester and nylon) or steel wire ropes and are characterized by being soft, wear-resistant, and not damaging the pipe surface.

[0003] Currently, when using slings to lift pipelines, a single sling is first wrapped around the pipeline surface, with the sling positioned as close to the center of the pipeline as possible. The lifting hook at one end of the sling is positioned directly above the pipeline, and the outer wall of the sling is tightly fitted to the pipeline surface. Next, both ends of the wrapped sling are secured (using bolts or clips). Then, the lifting ring is connected to the lifting hook of the lifting equipment, allowing the pipeline to be lifted to the desired position. However, using a single sling makes it difficult to maintain the pipeline's balance, causing the pipeline's center of gravity to shift, resulting in tilting or swaying. This can lead to the pipeline easily colliding with surrounding equipment during lifting, or even the sling breaking due to overload, thus damaging the pipeline.

[0004] Therefore, this utility model provides a pipe lifting sling to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a pipe lifting sling, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] As a preferred technical solution of this application, each of the two lifting slings has a connecting plate fixedly installed at one end, and a fixing frame that limits the other end of the lifting sling is fixedly installed on one side of the connecting plate.

[0010] The slide rod is fixedly installed on the end of each of the two connecting plates away from the lifting sling. Guide tubes are slidably sleeved on the outer walls of the two slide rods, and threaded holes are opened on the end of each slide rod away from the connecting plate. Drive rods are rotatably installed in the inner cavity of each of the two threaded holes. Threaded grooves that match the threaded holes are opened on the outer walls of the two drive rods. A drive disc is set between the two guide tubes, and the ends of the two drive rods away from the threaded holes are fixedly connected to the two ends of the drive disc, respectively.

[0011] As a preferred technical solution of this application, a lifting frame is provided between the two guide tubes, a lifting ring is fixedly installed on the top of the lifting frame, and the bottom of the lifting frame is fixedly connected to the outer wall of the two guide tubes respectively.

[0012] As a preferred technical solution of this application, guide bars are fixedly installed on the outer walls of both slide rods along their own axial direction, and guide grooves that are compatible with the guide bars are opened on the outer walls of both guide tubes.

[0013] As a preferred technical solution of this application, the fixing frame is configured as a U-shaped structure, and one side of the fixing frame and the connecting plate can form a cavity for the hoisting belt to pass through.

[0014] As a preferred technical solution of this application, the connecting plate has a threaded hole on the side away from the fixed frame, and a limiting bolt for limiting the lifting belt is installed in the inner cavity of the threaded hole through thread engagement. The outer wall of the lifting belt has an insertion hole that matches the limiting bolt.

[0015] As a preferred technical solution of this application, a plurality of limiting pads are fixedly installed on the side of the lifting sling that contacts the pipe surface, and the plurality of limiting pads are all made of rubber material.

[0016] (III) Beneficial Effects

[0017] In this invention, when hoisting a pipeline, two hoisting straps are used to wrap the outside of the pipeline, and then the hook and hoisting ring of the hoisting equipment are connected to each other to achieve the hoisting of the pipeline. Since the hoisting frame is close to or located in the middle of the pipeline, it avoids the pipeline from shifting its center of gravity during hoisting, thus preventing large tilting or swinging. It also prevents the pipeline from breaking due to collision with surrounding equipment or the hoisting straps during hoisting, and avoids damage to the pipeline due to hoisting. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a pipe lifting sling;

[0019] Figure 2 This is a schematic diagram of the structure of a lifting sling and a guide pipe in a pipeline lifting sling.

[0020] Figure 3 This is an assembly drawing of a pipe lifting sling and a limit bolt.

[0021] Figure 4 A type of pipe lifting sling Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 5 A type of pipe lifting sling Figure 2 Enlarged view of the structure at point B.

[0023] In the picture:

[0024] 1. Lifting sling; 2. Connecting plate; 3. Sliding rod; 4. Guide tube; 5. Drive disc; 6. Lifting frame; 7. Drive rod; 8. Guide strip; 9. Limit bolt; 10. Limit pad; 11. Through hole; 12. Fixing frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a pipe lifting sling, such as Figure 1-5 As shown, it includes:

[0027] Two lifting slings 1 are fixedly installed with connecting plates 2 at one end. A fixing frame 12 is fixedly installed on one side of the connecting plate 2 to limit the other end of the lifting sling 1. The fixing frame 12 is set as a U-shaped structure, and the fixing frame 12 and one side of the connecting plate 2 can form a cavity for the lifting sling 1 to pass through. When it is necessary to lift the pipeline, firstly, the ends of the two lifting slings 1 away from the connecting plate 2 are wrapped around the bottom of the pipeline and extended to the top of the pipeline, and the connecting plate 2 is ensured to be above the pipeline. Then, one end of the lifting sling 1 is inserted into the cavity formed by the fixing frame 12 and the connecting plate 2 until the outer wall of the lifting sling 1 is tightly attached to the outer wall of the pipeline to achieve the wrapping of the outside of the pipeline.

[0028] A threaded hole is provided on the side of the connecting plate 2 away from the fixing frame 12. A limiting bolt 9 for limiting the lifting sling 1 is installed in the inner cavity of the threaded hole through thread engagement. An insertion hole 11 that matches the limiting bolt 9 is provided on the outer wall of the lifting sling 1. After the two lifting slings 1 wrap around the surface of the pipe, the end of the lifting sling 1 away from the connecting plate 2 is pulled up forcefully until the middle of the opening end of one of the insertion holes 11 is at the same horizontal line as the middle of the opening end of the threaded hole. Then, the limiting bolt 9 is inserted into the inner cavity of the threaded hole and rotated continuously until the small end of the limiting bolt 9 passes through the insertion hole 11 and fits against the inner wall of the fixing frame 12, thereby limiting the lifting sling 1. When the limiting bolt 9 and the connecting plate 2 are in a relatively static state, the lifting sling 1 cannot detach from the outer wall of the pipe, which improves the stability of the pipe during lifting.

[0029] The size of the chamber formed by the hoisting belt 1 can be controlled by the cooperation of multiple through holes 11 and limit bolts 9, so as to wrap different continuous pipes.

[0030] Multiple limiting pads 10 are fixedly installed on the side of the lifting sling 1 that contacts the pipe surface. The multiple limiting pads 10 are all made of rubber material. When the lifting sling 1 wraps around the outer wall of the pipe, one end of the multiple limiting pads 10 simultaneously contacts the pipe surface and deforms under force, thereby increasing the friction force on the pipe during lifting. This prevents the lifting sling 1 from separating from the outer wall of the pipe during lifting and avoids pressure concentration at the tightening point of the lifting sling 1, which could lead to local deformation of the metal pipe or peeling of the coating, thus affecting the subsequent use of the pipe.

[0031] The sliding rod 3 is fixedly installed at the ends of the two connecting plates 2 away from the lifting strap 1. The outer walls of the two sliding rods 3 are slidably fitted with guide tubes 4, and the ends of the two sliding rods 3 away from the connecting plates 2 are provided with threaded holes. The inner cavities of the two threaded holes are rotatably installed with drive rods 7. The outer walls of the two drive rods 7 are provided with threaded grooves that match the threaded holes. A drive disc 5 is provided between the two guide tubes 4. The ends of the two drive rods 7 away from the threaded holes are fixedly connected to the two ends of the drive disc 5 respectively. Before wrapping the two lifting straps 1 around the outside of the pipe, first determine the length of the pipe, then place the two guide tubes 4 directly above the pipe, and make the drive disc 5 as close as possible to the middle of the pipe. Then, rotate the drive disc 5 according to the length of the pipe, so that the two drive rods 7 rotate simultaneously. With the cooperation of the threaded holes, the two sliding rods 3 can slide along their own axis (the two sliding rods 3 move closer or further away from each other) until the distance between the two lifting straps 1 is less than the length of the pipe. Then, the two lifting straps 1 are fitted around the outside of the pipe and limited by the limiting bolts 9.

[0032] Guide bars 8 are fixedly installed on the outer walls of both sliding rods 3 along their own axis. Guide grooves that match the guide bars 8 are opened on the outer walls of both guide tubes 4. When the sliding rod 3 slides along its own axis, the guide bars 8 slide along the inner cavity of the guide groove, which can limit the sliding trajectory of the sliding rod 3, prevent the sliding rod 3 from rotating with the drive rod 7, and improve the stability of the sliding rod 3 in the inner cavity of the guide tube 4.

[0033] A lifting frame 6 is provided between the two guide pipes 4. A lifting ring is fixedly installed on the top of the lifting frame 6, and the bottom of the lifting frame 6 is fixedly connected to the outer wall of the two guide pipes 4 respectively. The lifting frame 6 is set as a U-shaped structure to connect the two guide pipes 4, thereby improving the connection strength between the two guide pipes 4. When lifting the pipe, it is only necessary to connect the hook of the lifting equipment with the lifting ring to achieve the lifting of the pipe by the lifting equipment. Since the lifting frame 6 is close to or located in the middle of the pipe, it avoids the center of gravity shift of the pipe during lifting, which may cause large tilting or swinging. It also prevents the pipe from hitting surrounding equipment or breaking during the lifting process, thus avoiding damage to the pipe due to lifting.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipe hoisting belt, characterized in that, include Two lifting slings (1) are fixedly installed with a connecting plate (2) at one end. A fixing frame (12) that limits the other end of the lifting sling (1) is fixedly installed on one side of the connecting plate (2). The slide rod (3) is fixedly installed at the end of the two connecting plates (2) away from the lifting belt (1). The outer walls of the two slide rods (3) are slidably sleeved with guide tubes (4). The ends of the two slide rods (3) away from the connecting plates (2) are provided with threaded holes. The inner cavities of the two threaded holes are rotatably installed with drive rods (7). The outer walls of the two drive rods (7) are provided with threaded grooves that match the threaded holes. A drive disc (5) is provided between the two guide tubes (4). The ends of the two drive rods (7) away from the threaded holes are fixedly connected to the two ends of the drive disc (5).

2. A pipe hoisting belt according to claim 1, characterized in that: A lifting frame (6) is provided between the two guide tubes (4). A lifting ring is fixedly installed on the top of the lifting frame (6), and the bottom of the lifting frame (6) is fixedly connected to the outer wall of the two guide tubes (4).

3. A pipe hoisting belt according to claim 1, characterized in that: The outer walls of the two sliding rods (3) are fixedly equipped with guide strips (8) along their own axis, and the outer walls of the two guide tubes (4) are provided with guide grooves that are compatible with the guide strips (8).

4. A pipe hoisting belt according to claim 1, characterized in that: The fixing frame (12) is configured as a U-shaped structure, and the fixing frame (12) and one side of the connecting plate (2) can form a cavity for the hoisting belt (1) to pass through.

5. A pipe hoisting belt according to claim 4, characterized in that: The connecting plate (2) has a threaded hole on the side away from the fixed frame (12). A limiting bolt (9) for limiting the lifting belt (1) is installed in the inner cavity of the threaded hole by thread engagement. The outer wall of the lifting belt (1) has an insertion hole (11) that matches the limiting bolt (9).

6. A pipe hoisting belt according to claim 1, characterized in that: Multiple limiting pads (10) are fixedly installed on the side of the lifting sling (1) that contacts the pipe surface. All the limiting pads (10) are made of rubber material.

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