Multifunctional adjustable lifting lug

Abstract

The application discloses a multifunctional adjustable lifting lug for hoisting, which comprises a lug plate, the two sides of the lug plate are connected with the upper ends of two adjusting rods through adjusting buckles respectively, the two adjusting rods are cross arranged and are hinged at the middle parts through movable shafts, and the lower ends of the two adjusting rods are connected with displacement adjusting modules on the two sides of a hoisting seat respectively. The application has the beneficial effects that: the transverse displacement adjusting module composed of a sliding groove and a sliding block is adopted to realize accurate adjustment of the hoisting point position, the center of gravity position of different cabinet bodies can be self-adapted, and the overturning risk can be effectively eliminated; the self-adaptive four-bar linkage mechanism composed of the double adjusting rods and the movable shafts can automatically adjust the angle, the hoisting point vertical stress can be maintained, and the cabinet body deformation can be significantly reduced; the universal lug adopting the modular design is suitable for all specifications of disc cabinets, quick disassembly and assembly are supported, welding modification is not needed, and the installation efficiency is significantly improved.

Description

Technical Field

[0001] This application pertains to hoisting equipment related to the renovation and maintenance of hydropower stations, specifically involving a multi-functional adjustable lifting lug for hoisting. Background Technology

[0002] In the renovation projects of large hydropower stations, critical systems with long service lives often require the complete replacement of control panels, and the hoisting operation is highly dependent on the reliability of the lifting lug structure. The current common solution is to weld or bolt the lifting lugs to the four corners of the control panel; however, this fixed structure has significant drawbacks.

[0003] First, the non-adjustable lifting point position cannot be matched to the actual center of gravity of the cabinet, causing force shift during lifting and easily leading to equipment tilting, endangering operational safety. Second, the poor versatility of the fixed structure makes it difficult to adapt to cabinets of different sizes, forcing the customization of special lifting tools for different specifications of cabinets, significantly increasing the overall costs of procurement, warehousing, and management. In addition, there is a high stress concentration problem at the welded joints between the lifting lugs and the cabinet body, with a stress concentration coefficient as high as 2.8~3.5. Long-term use can easily cause plastic deformation of the cabinet frame, especially under eccentric load conditions, the risk of weld cracking increases significantly, seriously threatening the structural integrity of the equipment.

[0004] Therefore, given the urgent need for flexible adjustment of lifting points, dynamic adaptation of the center of gravity, and effective structural protection, the market urgently requires innovative lifting lug technology solutions. Utility Model Content

[0005] The purpose of this application is to provide a multi-functional adjustable lifting lug for hoisting, which aims to overcome the shortcomings of the prior art, such as poor adaptability, insufficient hoisting stability, and risk of overload damage.

[0006] The lifting lug of this application, through the coordinated action of its displacement adjustment module, dynamic balancing module, and safety locking module, can flexibly adapt to distribution panel cabinets of different sizes, weights, and center of gravity positions. This design not only effectively ensures the stability of the lifting process and significantly improves work efficiency, adapting to the requirements of complex spatial environments, but also greatly simplifies the complexity of lifting tool configuration, thereby systematically solving key problems such as center of gravity shift, poor adaptability, and overload damage.

[0007] The objective of this application is achieved through the following technical solution:

[0008] A multi-functional adjustable lifting lug for hoisting includes a lifting lug plate. The two sides of the lifting lug plate are connected to the upper ends of two adjusting rods respectively through adjusting buckles. The two adjusting rods are arranged crosswise and hinged in the middle through a movable shaft. The lower ends of the two adjusting rods are connected to displacement adjusting modules on both sides of the hoisting base respectively.

[0009] Furthermore, the upper middle part of the lifting lug plate is provided with a lifting hole.

[0010] Furthermore, the upper end of the adjusting buckle is hung in the buckle hole of the lifting lug plate, and the lower end of the adjusting buckle is hung in the buckle hole at the upper end of the adjusting rod.

[0011] Furthermore, the lower end of the adjusting rod has an inner hook-shaped structure.

[0012] Furthermore, the displacement adjustment module includes an adjustment part, a sliding groove, a sliding block, and a connecting buckle. The adjustment part is a structural part of the hoisting base. The adjustment part has sliding grooves on both sides, and a sliding block that slides is provided in the sliding groove. A connecting buckle is provided on the sliding block, and the connecting buckle is connected to the lower end of the adjustment rod.

[0013] Furthermore, the adjustment part is the lower part of the lifting base.

[0014] Furthermore, the sliding groove is arranged horizontally and is a transverse T-shaped groove.

[0015] Furthermore, a locking screw is screwed onto the adjustment part, and the locking screw extends into the sliding groove and contacts the sliding block.

[0016] Furthermore, the connecting buckle is attached to the buckle hole at the lower end of the adjusting rod.

[0017] Furthermore, safety locking modules are provided between the lower ends of the two adjusting rods and both sides of the lifting base.

[0018] Furthermore, the safety locking module includes a locking part, a fixed column, a movable spring, a locking block, and a locking buckle. The locking part is a structural part of the hoisting base. The locking block is hinged to the locking part through the fixed column on the side. A movable spring is provided between the upper part of the locking block and the locking part. A locking buckle is provided at the lower end of the adjusting rod. The locking buckle cooperates with the locking groove at the lower part of the locking block.

[0019] Furthermore, the locking part is the upper part of the lifting base.

[0020] Furthermore, the lifting base has several partitions on both sides, and the safety locking module is located in the partition.

[0021] The functions implemented in this application are:

[0022] 1. Enhanced safety: Dynamic balance + mechanical interlock double insurance to prevent rollover accidents.

[0023] 2. Optimize economy: Standardized design can reduce the cost of a single hoisting operation and maintenance costs.

[0024] 3. Improved efficiency: Reduced time spent adjusting lifting points and installing different lifting devices.

[0025] The beneficial effects of this application are:

[0026] 1. The lateral displacement adjustment module, consisting of sliding grooves and sliding blocks, enables precise adjustment of the lifting point position and can adapt to the center of gravity position of different cabinets, effectively eliminating the risk of tipping over.

[0027] 2. The adaptive four-bar linkage mechanism composed of the double adjusting rods and the movable shaft can automatically adjust the angle to keep the suspension point vertically stressed, significantly reducing cabinet deformation.

[0028] 3. The locking block and the movable spring work together. The movable spring buffers the instantaneous impact. When the impact force reaches the critical value, the locking block immediately triggers the mechanical lock, effectively preventing damage to the cabinet structure.

[0029] 4. The innovative mechanical self-locking mechanism breaks through the limitations of traditional methods, automatically resetting after overload, avoiding the scrapping of the lifting lugs, and significantly reducing costs.

[0030] 5. The modular design of the universal lifting lugs is compatible with all sizes of cabinets and supports quick assembly and disassembly without the need for welding modifications, significantly improving installation efficiency.

[0031] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this application.

[0033] Figure 2 This is a schematic diagram of the dynamic balancing module structure in this application.

[0034] Figure 3 This is a schematic diagram of the displacement adjustment module and safety locking module of this application.

[0035] Figure 4 This is a schematic diagram of the card-locking structure of the card-locking block and the card-locking buckle in this application.

[0036] Figure 5 This is a schematic diagram of the hoisting base structure in this application.

[0037] In the diagram: Lifting lug plate-1, Adjusting buckle-2, Adjusting rod-3, Movable shaft-4, Adjusting part-5, Sliding groove-6, Sliding block-7, Connecting buckle-8, Locking part-9, Fixing column-10, Movable spring-11, Clamping block-12, Clamping buckle-13, Lifting seat-14, Partition groove-15. Detailed Implementation

[0038] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0039] refer to Figures 1-5 As shown, a multi-functional adjustable lifting lug for hoisting includes a dynamic balancing module, a displacement adjustment module, and a safety locking module.

[0040] The dynamic balancing module includes a lug plate 1, an adjusting buckle 2, an adjusting rod 3, and a movable shaft 4. The two sides of the lug plate 1 are connected to the upper ends of two adjusting rods 3 respectively through the adjusting buckle 2. The two adjusting rods 3 are arranged crosswise and are hinged in the middle through the movable shaft 4.

[0041] With the multi-degree-of-freedom rotation capability provided by the movable shaft 4, the adjusting rod 3 also pulls the adjusting buckles 2 at both ends for adjustment, automatically adjusting the direction of the lifting force line, eliminating eccentric loads in real time, and ensuring stable lifting. During lifting, the hook acts on the lifting lug plate 1, which is transmitted to the lifting seat 14 through the adjusting buckles 2 and adjusting rod 3, and finally acts on the cabinet frame.

[0042] The lower ends of the two adjusting rods 3 are respectively connected to the displacement adjusting modules on both sides of the lifting base 14. The displacement adjusting modules adjust the position of the adjusting rods 3 connected to the lifting base 14 laterally, so as to achieve precise adjustment of the lifting point position. It can adapt to the center of gravity position of different cabinets and effectively eliminate the risk of tipping over.

[0043] Safety locking modules are provided between the lower ends of the two adjusting rods 3 and both sides of the lifting base 14. When the impact force reaches the critical value, the adjusting rods 3 and the lifting base 14 are immediately locked together by the safety locking modules, effectively preventing damage to the cabinet structure.

[0044] The upper middle part of the lifting lug plate 1 has a lifting hole for hooking the hook. The upper end of the adjusting buckle 2 is hooked into the buckle hole of the lifting lug plate 1, and the lower end of the adjusting buckle 2 is hooked into the buckle hole at the upper end of the adjusting rod 3, so that the upper and lower nodes of the adjusting buckle 2 can be movably connected to achieve free adjustment. The lower end of the adjusting rod 3 has an inner hook-shaped structure to facilitate the connection and locking of the lower end.

[0045] The displacement adjustment module includes an adjustment part 5, a sliding groove 6, a sliding block 7, and a connecting buckle 8. The adjustment part 5 is a structural part of the lifting base 14, specifically the lower part of the lifting base 14. Sliding grooves 6 are provided on both sides of the adjustment part 5, and sliding blocks 7 are provided within the sliding grooves 6. Connecting buckles 8 are provided on the sliding blocks 7, and the connecting buckles 8 are connected to the lower end of the adjustment rod 3. By sliding the sliding blocks 7 within the sliding grooves 6, the position of the adjustment rod 3 acting on the lifting base 14 is changed, precisely adjusting the lifting point position to match the center of gravity of the cabinet.

[0046] The sliding groove 6 is arranged horizontally and is a transverse T-shaped groove, which enables stable horizontal sliding of the sliding block 7. A locking screw is screwed onto the adjusting part 5. The locking screw extends into the sliding groove 6 and contacts the sliding block 7. When the sliding block 7 is adjusted, the locking screw is released; when the sliding block is in place, the locking screw fixes the sliding block 7 in place. The connecting buckle 8 is hung in the buckle hole at the lower end of the adjusting rod 3. The connection buckle 8 and the adjusting rod 3 are properly engaged to compensate for the angle after position adjustment.

[0047] The safety locking module includes a locking part 9, a fixing post 10, a movable spring 11, a locking block 12, and a locking buckle 13. The locking part 9 is a structural part of the lifting base 14, specifically the upper part of the lifting base 14. The locking block 12 is hinged to the locking part 9 via the fixing post 10 on the side. A movable spring 11 is provided between the upper part of the locking block 12 and the locking part 9. The lower end of the adjusting rod 3 is provided with a locking buckle 13, which engages with the locking groove at the lower part of the locking block 12.

[0048] Under the influence of gravity, the latch 13 actively abuts against the latching block 12 to form an initial constraint. When the load exceeds the set threshold, the movable spring 11 is compressed, the latching block 12 flips upward, causing the latch 13 to enter the locking groove of the latching block 12, driving the adjusting rod 3 to adaptively lock along the locking part 9, effectively preventing overload damage. The above modules work together throughout the entire gravity transmission process to jointly achieve the core functions of fine adjustment of the lifting point, dynamic balance, and overload protection. Several partitions 15 are provided on both sides of the lifting base 14, and the safety locking module is located in the partition 15. That is, the safety locking modules in different positions are matched according to the different installation positions of the adjusting rod 3.

[0049] The method of using this application is as follows: 1. Installation and positioning: Weld or screw the lifting base 14 to the top frame of the cabinet, requiring the two lifting bases 14 to be parallel. The adjusting part 5 of the lifting base 14 has T-shaped sliding grooves 6 on both sides for limiting and guiding. During installation, the sliding block 7 needs to be placed into the sliding groove 6 in advance.

[0050] 2. Lifting Point Adjustment: Loosen the set screws on the side of the sliding groove 6 to release the constraint on the sliding block 7. Then, push the lifting lug 1 laterally, causing the sliding block 7 to slide along the T-shaped guide groove of the sliding groove 6 to the target lifting point position. After it is in place, tighten the set screws again to firmly fix the sliding block 7 in the target position, completing the fine adjustment of the lifting point.

[0051] 3. Safe Lifting: When the hook pulls the lifting lug 1 to apply a load, gravity drives the adjusting rod 3 to rotate around the movable shaft 4. The locking buckle 13 at the end of the adjusting rod 3 then contacts the locking block 12, achieving initial force transmission through inclined contact. If the load force exceeds the preset safety threshold, the movable spring 11 is compressed, driving the locking block 12 to rotate. The locking block 12 then precisely weds into the corresponding groove of the locking buckle 13, forming a rigid mechanical interlock. In this state, the impact force is directly transmitted to the cabinet frame through the locking part 9, effectively avoiding the risk of the adjusting rod 3 breaking due to overload.

[0052] The working principle of this application is as follows: Before hoisting, the lifting lug 1 is pushed laterally according to the center of gravity of the cabinet, causing the connected sliding block 7 to slide continuously within the T-shaped guide groove of the sliding groove 6. Precise positioning is achieved using a scale on the side of the adjustment part 5, ensuring that the horizontal position of the lifting point and the deviation from the center of gravity meet the preset requirements. After positioning, the locking bolts are tightened to rigidly fix the sliding block 7, achieving adaptive matching between the cabinet and the lifting point. At the moment of lifting, gravity acts on the lifting lug 1, driving the double adjusting rod 3 to automatically deflect around the joint bearing of the movable shaft 4. The adjusting rod 3 dynamically adjusts its angle in real time, ensuring that the force line of the lifting cable always passes precisely perpendicularly through the center of gravity of the cabinet, guaranteeing a stable lifting operation.

[0053] If a sudden impact causes the load to exceed a predetermined safety threshold, the latch 13 will press against the inclined surface of the latching block 12, driving the latching block 12 to rotate rapidly around the fixed column. During this process, the movable spring 11 is compressed to its critical stroke, and the latching block 12 rotates to a specific angle. The latching block 12 will then engage with the latch 13 through the adjustment of the movable spring 11, forming a rigid mechanical interlock. The impact force is then directly introduced into the cabinet frame through the locking part 9, effectively reducing the peak impact load. After the load is removed, the mechanism automatically resets under the elastic restoring force of the movable spring 11, completely avoiding the structural failure problem caused by overload impact of traditional lifting lugs.

[0054] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-functional adjustable lifting lug for hoisting, comprising a lifting lug plate (1), characterized in that: The two sides of the lifting lug plate (1) are connected to the upper ends of two adjusting rods (3) respectively through adjusting buckles (2). The two adjusting rods (3) are arranged crosswise and hinged in the middle through a movable shaft (4). The lower ends of the two adjusting rods (3) are connected to the displacement adjustment modules on both sides of the lifting seat (14) respectively.

2. The multi-functional adjustable lifting lug for hoisting according to claim 1, characterized in that: The upper middle part of the lifting lug plate (1) is provided with a lifting hole; the upper end of the adjusting buckle (2) is hung in the buckle hole of the lifting lug plate (1), and the lower end of the adjusting buckle (2) is hung in the buckle hole at the upper end of the adjusting rod (3).

3. The multi-functional adjustable lifting lug for hoisting according to claim 1, characterized in that: The lower end of the adjusting rod (3) has an inner hook-shaped structure.

4. The multi-functional adjustable lifting lug for hoisting according to claim 1, characterized in that: The displacement adjustment module includes an adjustment part (5), a sliding groove (6), a sliding block (7), and a connecting buckle (8). The adjustment part (5) is a structural part of the hoisting seat (14). The adjustment part (5) has sliding grooves (6) on both sides. The sliding grooves (6) have sliding blocks (7) inside. The sliding blocks (7) have connecting buckles (8) on them. The connecting buckles (8) are connected to the lower end of the adjustment rod (3).

5. The multi-functional adjustable lifting lug for hoisting according to claim 4, characterized in that: The sliding groove (6) is arranged horizontally and is a horizontal T-shaped groove.

6. The multi-functional adjustable lifting lug for hoisting according to claim 4 or 5, characterized in that: The adjustment part (5) is screwed with a locking screw, which extends into the sliding groove (6) and contacts the sliding block (7).

7. The multi-functional adjustable lifting lug for hoisting according to claim 4, characterized in that: The connecting buckle (8) is hung in the buckle hole at the lower end of the adjusting rod (3).

8. The multi-functional adjustable lifting lug for hoisting according to claim 1, characterized in that: Safety locking modules are provided between the lower ends of the two adjusting rods (3) and both sides of the hoisting base (14).

9. The multi-functional adjustable lifting lug for hoisting according to claim 8, characterized in that: The safety locking module includes a locking part (9), a fixing post (10), a movable spring (11), a locking block (12), and a locking buckle (13). The locking part (9) is a structural part of the hoisting seat (14). The locking block (12) is hinged to the locking part (9) through the fixing post (10) on the side. A movable spring (11) is provided between the upper part of the locking block (12) and the locking part (9). The lower end of the adjusting rod (3) is provided with a locking buckle (13), which cooperates with the locking groove at the lower part of the locking block (12).

10. The multi-functional adjustable lifting lug for hoisting according to claim 8 or 9, characterized in that: The lifting base (14) has several partitions (15) on both sides, and the safety locking module is located in the partition (15).

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