Vertical lifting sling

Abstract

The utility model discloses a vertical hoisting sling which comprises a fixing plate, convex seats are symmetrically arranged at the top of the fixing plate, connecting pin shafts are arranged in the convex seats, connecting seats are rotatably connected to the positions, located on the outer sides of the connecting pin shafts, in the convex seats, U-shaped connecting rods are rotatably connected to the top ends of the connecting seats, and through holes in the horizontal direction are formed in the top ends of the connecting seats. The vertical hoisting sling is connected with a tower drum flange bolt through the fixing plate, the U-shaped connecting rods and the steel wire bundling ropes which are symmetrically arranged are combined, the U-shaped connecting rods and the steel wire bundling ropes which are symmetrically arranged are connected into the through holes in a matched mode, connectors are arranged at the two ends of each U-shaped connecting rod, the ends of the screws penetrate through the connectors in a sliding mode, and the ends, located outside the connectors, of the screws are in threaded connection with matched nuts. Hoisting loads can be evenly distributed, local stress deformation of the tower drum is avoided, hoisting safety is improved, the connecting base can rotate around the connecting pin shaft, the U-shaped connecting rod can horizontally rotate, the angle can be adjusted, and the requirements for different hoisting directions and inclination of the tower drum can be met.

Description

Technical Field

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

[0002] The wind turbine tower is a columnar component that supports the wind turbine. Due to its weight and size, wind turbine towers are typically divided into several sections, connected by flanges with a ring of fixing holes for bolts. During handling and installation, the sections of the wind turbine tower are secured using rigging. Steel wire ropes on lifting machinery are connected to the rigging to lift the tower sections into position for assembly.

[0003] Traditional hoisting methods typically involve directly binding steel wire ropes to the tower flange or cylinder for lifting. Direct binding may cause uneven stress on the tower during hoisting, which can easily lead to slippage or tilting and increase safety risks. Therefore, we propose a vertical hoisting sling. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical lifting sling to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vertical lifting sling, including a fixing plate, wherein a boss is symmetrically provided on the top of the fixing plate, and a connecting pin is provided inside the boss; a connecting seat is rotatably connected to the outside of the connecting pin inside the boss; and a U-shaped connecting rod is rotatably connected to the top of the connecting seat.

[0006] Preferably, the top of the connecting seat has a horizontal through hole, and a screw is connected to the through hole. Both ends of the U-shaped connecting rod are provided with connectors. The end of the screw slides through the connector, and a matching nut is threaded to the end of the screw located outside the connector.

[0007] Preferably, the top of the fixing plate is provided with mounting holes at equal intervals, and fixing bolts are provided in the mounting holes. The fixing bolts are threaded with fixing nuts at one end located outside the fixing plate.

[0008] Preferably, the two ends of the screw are provided with external threads, and the connector is rotatably connected to the outer side of the middle part of the screw.

[0009] Preferably, the protrusion and the fixing plate are an integral structure, and the connector and the U-shaped connecting rod are an integral structure.

[0010] Preferably, the three mounting holes are provided corresponding to the bolt holes of the end flange of the new energy wind turbine tower.

[0011] Preferably, the ends of the two U-shaped connecting rods are connected to steel wire ropes, and the outer sides of the ends of the steel wire ropes are connected to steel wire suspension ropes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a fixing plate bolted to the tower flange, combined with symmetrically arranged U-shaped connecting rods and steel wire ropes, to ensure even distribution of lifting load, avoid localized deformation of the tower, and improve lifting safety.

[0014] 2. The connecting seat of this utility model can rotate around the connecting pin shaft, and the U-shaped connecting rod can rotate horizontally and adjust the angle, which can adapt to different lifting directions and tower tilt requirements, and is suitable for various working conditions.

[0015] 3. The mounting holes of the fixing plate of this utility model match the standard flange hole spacing, which can be quickly installed on towers of different specifications, reducing the time for changing lifting tools and improving work efficiency. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Fig. 3 This is a schematic diagram of the overall structure of this utility model.

[0019] In the diagram: 1. Fixing plate; 2. Boss; 3. Connecting pin; 4. Mounting hole; 5. Fixing bolt; 6. Connecting seat; 7. Screw; 8. U-shaped connecting rod; 9. Connector; 10. Matching nut; 11. Steel wire rope. Detailed Implementation

[0020] 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.

[0021] Please see Figs. 1-3 This utility model provides a technical solution: a vertical lifting sling, including a fixing plate 1, a boss 2 symmetrically arranged on the top of the fixing plate 1, and a connecting pin 3 arranged inside the boss 2. A connecting seat 6 is rotatably connected inside the boss 2 on the outside of the connecting pin 3, and a U-shaped connecting rod 8 is rotatably connected to the top of the connecting seat 6.

[0022] The top of the connector 6 has a horizontal through hole, and a screw 7 is connected in the through hole. Both ends of the U-shaped connector 8 are provided with connectors 9. The end of the screw 7 slides through the connector 9, and a matching nut 10 is threaded to the end of the screw 7 located outside the connector 9.

[0023] It should be noted that in this utility model, the fixing plate 1 is aligned and tightened with the bolt holes of the tower end flange by fixing bolts 5, and the connecting seat 6 is hinged to the boss 2 by connecting pin 3, so that the U-shaped connecting rod 8 can swing freely in the vertical plane to adapt to different lifting angle requirements. The screw 7 passes through the connecting head 9 at both ends of the U-shaped connecting rod 8 and is locked by matching nuts 10, ensuring a firm connection while allowing the U-shaped connecting rod 8 to rotate horizontally around the screw 7, enhancing the lifting flexibility. The wire rope 11 is sleeved on the ends of the two U-shaped connecting rods 8 and connected to the crane hook by wire rope. During lifting, the load is evenly transferred to the fixing plate 1 and the tower flange, which can avoid local stress concentration and ensure that the tower is stably erected. During the lifting process, the rotation structure of the connecting seat 6 and the U-shaped connecting rod 8 can adapt to the changes in the tower posture, reduce the twisting and friction of the wire rope, and improve safety.

[0024] The top of the fixing plate 1 has mounting holes 4 at equal intervals, and fixing bolts 5 are installed in the mounting holes 4. The fixing bolts 5 are threaded with fixing nuts at one end located outside the fixing plate 1.

[0025] It should be noted that the mounting holes 4 and the fixing bolts 5 provided on the fixing plate 1 can be used to fix the fixing plate 1 to the tower. The lifting slings can be four, six or more, and are installed at equal intervals on the flange of the tower. The ends of the multiple steel wire ropes 11 are connected by connectors and finally connected to the steel wire rope. The steel wire rope is then connected to the crane hook to lift the tower.

[0026] The screw 7 has external threads at both ends, and the connector 9 is rotatably connected to the outer side of the middle part of the screw 7.

[0027] It should be noted that the screw 7 passes through the connectors 9 at both ends of the U-shaped connecting rod 8 and is locked by the matching nuts 10, ensuring a firm connection while allowing the U-shaped connecting rod 8 to rotate horizontally around the screw 7, thus enhancing the flexibility of hoisting.

[0028] The convex seat 2 and the fixing plate 1 are integrated into one structure, and the connector 9 and the U-shaped connecting rod 8 are integrated into one structure.

[0029] It should be noted that the one-piece structure avoids the stress concentration problems that may be caused by welding or bolting, and has better overall rigidity. It is not easy to deform or break when lifting heavy objects, which improves safety and reliability. The one-piece molding process (such as casting or CNC machining) can ensure dimensional accuracy, reduce wear and loosening, and extend the service life of the lifting equipment.

[0030] The three mounting holes 4 are set to correspond to the bolt holes of the end flange of the new energy wind turbine tower.

[0031] It should be noted that the mounting holes 4 of the fixing plate 1 match the standard flange hole spacing, allowing for quick installation on towers of different specifications, reducing the time required to change lifting equipment and improving operational efficiency.

[0032] The ends of the two U-shaped connecting rods 8 are connected to steel wire ropes 11, and the outer side of the ends of the steel wire ropes 11 is connected to steel wire suspension ropes.

[0033] It should be noted that the wire rope 11 is connected between the two U-shaped connecting rods 8 and is connected to the crane hook through the wire rope, so that the lifting load is evenly distributed, avoiding local deformation of the tower and improving the safety of lifting.

[0034] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical lifting sling, characterized in that, Includes a fixing plate (1), on the top of the fixing plate (1) are symmetrically provided with a boss (2), and a connecting pin (3) is provided inside the boss (2). A connecting seat (6) is rotatably connected inside the boss (2) on the outside of the connecting pin (3). A U-shaped connecting rod (8) is rotatably connected to the top of the connecting seat (6).

2. The vertical lifting sling according to claim 1, characterized in that: The top of the connecting seat (6) is provided with a horizontal through hole, and a screw (7) is connected in the through hole. Both ends of the U-shaped connecting rod (8) are provided with connectors (9). The end of the screw (7) slides through the connector (9), and the end of the screw (7) located outside the connector (9) is threaded with a matching nut (10).

3. The vertical lifting sling according to claim 1, characterized in that: The top of the fixing plate (1) is provided with mounting holes (4) at equal intervals, and a fixing bolt (5) is provided in the mounting hole (4). The fixing bolt (5) is connected to a fixing nut at one end outside the fixing plate (1).

4. The vertical lifting sling according to claim 2, characterized in that: The screw (7) has external threads at both ends, and the connector (9) is rotatably connected to the outer side of the middle part of the screw (7).

5. A vertical lifting sling according to claim 4, characterized in that: The protrusion (2) and the fixing plate (1) are an integral structure, and the connector (9) and the U-shaped connecting rod (8) are an integral structure.

6. A vertical lifting sling according to claim 3, characterized in that: The three mounting holes (4) are provided corresponding to the bolt holes of the end flange of the new energy wind turbine tower.

7. The vertical lifting sling according to claim 1, characterized in that: The ends of the two U-shaped connecting rods (8) are connected to wire ropes (11), and the outer side of the ends of the wire ropes (11) is connected to wire suspension ropes.

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