A rotatable lifting sling

Abstract

The utility model relates to hoisting sling technical field, and disclose a rotatable hoisting sling, including base, base both sides are connected through connecting rod top plate, and top plate is equipped with sling ring. The movable slot is equipped in the base, and the first and second semicircular plates of symmetrical structure are placed in the slot, and the semicircular plate is equipped with ball and is provided with limit hole. The T-shaped frame is inserted in the middle part of base, the sling rope body is installed in the bottom, the pressing plate is installed on the top and is in extrusion contact with the ball, and the spring on the bottom of top plate forms the pressure on the pressing plate, reduces the rotating friction, makes the rotation more smooth. When the ball is seriously worn, the semicircular plate can be lifted and replaced quickly, and the rotation is avoided to be jammed. In addition, the diameter of pressing plate is less than the inner diameter of movable slot, and it is convenient to add lubricant. The utility model solves the problems that the traditional sling has big rotating resistance, complex replacement and inconvenient lubrication, improves the operation efficiency and equipment life.

Description

Technical Field

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

[0002] Lifting slings are widely used in construction, logistics, port loading and unloading and other scenarios that require lifting operations. They are mainly responsible for lifting, moving and positioning heavy objects, and their performance directly affects the efficiency and safety of operations.

[0003] Traditional lifting slings often employ fixed bearings or direct contact designs in their rotating structures. Long-term heavy-load friction between components easily leads to accelerated wear, gradually increasing resistance during rotation and causing problems such as jamming and abnormal noise. When critical components, such as support ball bearings, become severely worn, complete disassembly and replacement are necessary, which is complex, time-consuming, and disrupts operational continuity. Furthermore, lubrication and maintenance of existing structures are inconvenient; lubricant cannot evenly cover the friction surfaces, leading to localized dry friction that exacerbates wear, shortens equipment lifespan, and increases maintenance costs. Therefore, those skilled in the art have provided a rotatable lifting sling to address the problems mentioned in the background. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a rotatable lifting sling to solve the problems of high resistance and jamming during rotation in traditional lifting slings. Furthermore, when critical components such as support balls are severely worn, the entire sling needs to be disassembled and replaced, which is complex, time-consuming, and affects operational continuity. In addition, the existing structure suffers from inconvenient lubrication and maintenance; lubricant is difficult to evenly cover the friction surfaces, leading to localized dry friction that exacerbates wear, shortens equipment lifespan, and increases maintenance costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotatable lifting sling, comprising a base, connecting rods on both sides of the base, a top plate connected to the upper end of the connecting rods, the base being connected to the top plate via the connecting rods, a sling ring installed on the top of the top plate, a movable groove being provided inside the base, a first semicircular plate and a second semicircular plate being provided in the movable groove, the first semicircular plate and the second semicircular plate having symmetrical and identical structures, a limiting hole being provided on the first semicircular plate, a ball bearing being provided in the limiting hole, a T-shaped frame being vertically inserted into the middle of the base, sling ropes being installed at both ends of the bottom of the T-shaped frame, and a pressure plate being installed on the top of the T-shaped frame.

[0006] Preferably, a spring is installed on the bottom side of the top plate, and the spring is in contact with the pressure plate.

[0007] Preferably, the pressure plate is in pressure contact with the ball bearings, and the bottom side of the ball bearings is in pressure contact with the bottom side wall of the movable groove. With the support of the ball bearings in the first and second semicircular plates, the friction between the pressure plate and the bottom side of the movable groove in the base is reduced, making the rotation smoother.

[0008] Preferably, an insert plate is provided on the side opposite to the first and second semicircular plates. When the wear of the balls in the first and second semicircular plates is too high, the T-shaped frame can be lifted upwards, and then the first and second semicircular plates can be replaced to avoid wear causing the lock to rotate unevenly.

[0009] Preferably, the diameter of the pressure plate is smaller than the inner diameter of the movable groove, which facilitates the addition of lubricant to the first and second semicircular plates.

[0010] Compared with the prior art, this utility model provides a rotatable lifting sling, which has the following advantages: Through its design, this rotatable lifting sling utilizes a first and second semicircular plate with ball bearings within the movable groove of the base, along with a spring-loaded pressure plate structure. This significantly reduces friction between the pressure plate and the bottom of the movable groove during rotation, resulting in smoother rotation. When the ball bearings become excessively worn due to prolonged use, the first and second semicircular plates can be quickly replaced by lifting the T-shaped frame upwards, effectively preventing rotational jamming caused by component wear. Furthermore, the design of the pressure plate diameter being smaller than the inner diameter of the movable groove provides operational space for adding lubricant inside the groove, further ensuring the long-term stable operation of the rotating mechanism. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of a rotatable lifting sling provided in an embodiment of this application.

[0012] Figure 2 This is a structural cross-sectional view of the base of a rotatable lifting sling provided in an embodiment of this application.

[0013] Figure 3 This is a schematic diagram of the structure of the first and second semicircular plates in a rotatable lifting sling provided in an embodiment of this application.

[0014] In the diagram: 1. Base; 101. Movable groove; 2. Connecting rod; 3. Top plate; 4. Lifting sling ring; 5. Spring; 6. First semicircular plate; 601. Second semicircular plate; 7. Limiting hole; 8. Ball bearing; 9. Insert plate; 10. T-shaped frame; 11. Pressure plate; 12. Lifting sling rope. Detailed Implementation

[0015] 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.

[0016] This utility model provides a technical solution: a rotatable lifting sling. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 The system includes a base 1, connecting rods 2 on both sides of the base 1, a top plate 3 connected to the upper end of the connecting rods 2, the base 1 being connected to the top plate 3 via the connecting rods 2, a sling ring 4 installed on the top of the top plate 3, a movable groove 101 inside the base 1, a first semicircular plate 6 and a second semicircular plate 601 inside the movable groove 101, the first semicircular plate 6 and the second semicircular plate 601 having symmetrical and identical structures, a limiting hole 7 on the first semicircular plate 6, a ball bearing 8 inside the limiting hole 7, a T-shaped frame 10 vertically inserted in the middle of the base 1, sling ropes 12 installed at both ends of the bottom of the T-shaped frame 10, and a pressure plate 11 installed on the top of the T-shaped frame 10. A spring 5 is installed on the bottom side of the top plate 3. The spring 5 is in contact with the pressure plate 11, the pressure plate 11 is in contact with the ball bearing 8, and the bottom side of the ball bearing 8 is in contact with the bottom side wall of the movable groove 101. Under the support of the ball bearing 8 in the first semicircular plate 6 and the second semicircular plate, the friction between the pressure plate 11 and the bottom side of the movable groove 101 in the base 1 is reduced, making the rotation smoother. An insert plate 9 is provided on the opposite side of the first semicircular plate 6 and the second semicircular plate 601. When the ball bearing 8 in the first semicircular plate 6 and the second semicircular plate 601 is worn too much, the T-shaped frame 10 can be lifted upwards, and then the first semicircular plate 6 and the second semicircular plate can be replaced to avoid wear causing the lock to rotate unevenly. The diameter of the pressure plate 11 is smaller than the inner diameter of the movable groove 101, which facilitates the addition of lubricant to the first semicircular plate 6 and the second semicircular plate 601.

[0017] The working principle of this device is as follows: Connecting rods 2 are connected to both sides of the base 1. A top plate 3 is installed on the top of the connecting rods 2. A sling ring 4 is installed on the top of the top plate 3. A spring 5 is installed on the bottom side of the top plate 3. An movable groove 101 is opened on the base 1. A first semicircular plate 6 and a second semicircular plate 601 are arranged in the movable groove 101. An insert plate 9 is arranged on the opposite side of the first semicircular plate 6 and the second semicircular plate 601. The insert plates 9 can be inserted and positioned by mutual insertion. Limiting holes 7 are opened on the first semicircular plate 6 and the second semicircular plate 601. A ball bearing 8 is arranged in the limiting holes 7. A T-shaped frame 10 is vertically inserted into the base 1. Sling ropes 12 are installed at both ends of the bottom of the T-shaped frame 10. A pressure plate 11 is installed on the top of the T-shaped frame 10. The pressure plate 11 is above the first semicircular plate 6 and the second semicircular plate. Under the pressure of the spring 5, the pressure plate 11 is in close contact with the ball bearing 8. Supported by the inner balls 8 of the first semicircular plate 6 and the second semicircular plate 601, the friction between the pressure plate 11 and the bottom side of the movable groove 101 in the base 1 is reduced, making the rotation smoother. Furthermore, when the wear of the inner balls 8 of the first semicircular plate 6 and the second semicircular plate 601 is too high, the T-shaped frame 10 can be lifted upwards, and then the first semicircular plate 6 and the second semicircular plate 6 can be replaced to avoid wear causing the lock to rotate unevenly. In addition, the diameter of the pressure plate 11 is smaller than the inner diameter of the movable groove 101, which makes it convenient to add lubricant to the first semicircular plate 6 and the second semicircular plate 601.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A rotatable lifting sling, comprising a base (1), characterized in that: The base (1) is connected to two connecting rods (2) on both sides. The upper end of the connecting rods (2) is connected to a top plate (3). A sling ring (4) is installed on the top of the top plate (3). A movable groove (101) is opened in the base (1). A first semicircular plate (6) and a second semicircular plate (601) are set in the movable groove (101). The first semicircular plate (6) and the second semicircular plate (601) have the same symmetrical structure. A limit hole (7) is opened on the first semicircular plate (6). A ball bearing (8) is set in the limit hole (7). A T-shaped frame (10) is vertically inserted in the middle of the base (1). Sling ropes (12) are installed at both ends of the bottom of the T-shaped frame (10). A pressure plate (11) is installed on the top of the T-shaped frame (10).

2. The rotatable lifting sling according to claim 1, characterized in that: A spring (5) is installed on the bottom side of the top plate (3), and the spring (5) is in contact with the pressure plate (11).

3. The rotatable lifting sling according to claim 1, characterized in that: The pressure plate (11) is in pressure contact with the ball (8), and the bottom side of the ball (8) is in pressure contact with the bottom side wall of the movable groove (101).

4. A rotatable lifting sling according to claim 1, characterized in that: An insert plate (9) is provided on the side of the first semicircular plate (6) opposite to the second semicircular plate (601).

5. A rotatable lifting sling according to claim 1, characterized in that: The diameter of the pressure plate (11) is smaller than the inner diameter of the movable groove (101).

6. A rotatable lifting sling according to claim 1, characterized in that: The base (1) is connected to the top plate (3) via a connecting rod (2).

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