Lifting appliance

Abstract

The utility model provides a lifting appliance which comprises a main frame with a regular shape, a plurality of supporting beams are uniformly distributed in the main frame, and the two ends of each supporting beam abut against the inner wall side of the main frame; a plurality of upper lifting lugs are evenly distributed at the upper end of the main frame, a plurality of lower lifting lugs are evenly distributed at the lower end of the main frame, and the upper lifting lugs are used for being fixedly connected with a first steel cable on a crane hook. The lower lifting lug is used for being detachably connected with a cable storage disc through a connecting assembly. According to the utility model, the plurality of connecting plates are uniformly arranged at the upper end and the lower end of the main frame which is regular in shape, so that the problem of unbalanced stress is not easy to occur when the large cable storage tray is hoisted, and therefore, the stress balance of the large cable storage tray during hoisting is realized, and the overall structure is simplified. The technical problems that an existing lifting appliance is irregular and insufficient in lifting point, the cable storage disc is prone to unbalanced stress in the lifting process, and then stress deformation of the cable storage disc is caused are solved.

Description

Technical Field

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

[0002] In fields such as marine engineering and power transmission, cable storage reels serve as crucial equipment for storing and protecting cables, and the safety and stability of their hoisting process are paramount. However, existing lifting gear designs for cable storage reels have significant shortcomings, primarily manifested in irregular structures and a limited number of lifting points. This design flaw leads to uneven stress distribution on the cable storage reel during hoisting, easily causing localized stress concentrations, which can result in deformation or even damage. This is particularly pronounced in the hoisting of large cable storage reels, where the reel's weight exacerbates the problems of irregular structures and insufficient lifting points, severely impacting the safety and efficiency of the operation. Therefore, developing a new type of lifting gear with a rational structure and uniformly distributed lifting points to improve the stress state of the cable storage reel during hoisting and reduce the risk of deformation has become an urgent technological need. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a lifting device that primarily solves the technical problem that the irregularity and insufficient lifting points of existing lifting devices easily lead to unbalanced forces on the cable storage reel during lifting, resulting in deformation of the cable storage reel under stress.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A lifting device includes a regularly shaped main frame, in which multiple support beams are evenly distributed, with both ends of the support beams abutting against the inner wall of the main frame; multiple upper lifting lugs are evenly distributed at the upper end of the main frame, and multiple lower lifting lugs are evenly distributed at the lower end; the upper lifting lugs are used for fixed connection with a first steel cable on a crane hook, and the lower lifting lugs are used for detachable connection with a cable storage reel via a connecting assembly.

[0006] Furthermore, the connecting assembly includes a shackle and a second steel cable. The lower lifting lug has a through hole for the horizontal bolt of the shackle to pass through and insert. The second steel cable passes through the buckle body of the shackle, and the inner end of the second steel cable is used to connect with the lifting point corresponding to the bottom end of the side wall of the winding column inside the cable storage reel, and the outer end is used to connect with the lifting point corresponding to the outside of the cable storage reel.

[0007] Furthermore, the length of the through hole is smaller than the length of the shackle bolt.

[0008] Furthermore, the upper hanging lug is shaped like an equilateral triangle, and the lower hanging lug is shaped like an inverted triangle; the upper tip of the upper hanging lug and the lower tip of the lower hanging lug are arc-shaped.

[0009] Furthermore, the second steel cable is a flexible steel cable or an elastic rope.

[0010] Furthermore, there are 4 upper hanging ears and 10 lower hanging ears, with the 4 lower hanging ears located directly below the 4 upper hanging ears.

[0011] Furthermore, the main frame is circular or hexagonal, and both the main frame and the connecting plate are made of high-strength lightweight materials, including aluminum alloy or carbon fiber composite materials.

[0012] Furthermore, it also includes a security monitoring component, which includes:

[0013] A strain sensor installed on the first steel cable is used to detect the tensile stress of the first steel cable in real time;

[0014] The controller, installed in the control cabinet on the crane, communicates with the strain sensor wirelessly or via wired means.

[0015] The alarm is electrically connected to the controller and is used to issue an alarm signal when tensile stress exceeds a set range.

[0016] The emergency stop switch is connected to the controller. When the tensile stress exceeds the set range, the emergency stop switch is automatically triggered to cut off the power system of the crane.

[0017] Furthermore, the controller also has a self-testing function, which is used to automatically detect the connection status and function of each component before the spreader is started.

[0018] Furthermore, a damper is connected to the bottom of the cable storage reel via a flexible connector, and the damper is not positioned beyond the support at the bottom of the cable storage reel.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] The lifting device described in this utility model utilizes multiple connecting plates evenly distributed on the upper and lower ends of the annular main frame. This design minimizes the problem of unbalanced forces during the lifting of large cable storage reels. Thus, this application not only achieves force balance for large cable storage reels during lifting but also simplifies the overall structure. It improves upon the technical problem of existing lifting devices' irregularities and insufficient lifting points, which easily lead to unbalanced forces on the cable storage reel during lifting, resulting in deformation under stress. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the lifting device of this utility model when lifting the cable storage reel;

[0022] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0023] Figure 3 yes Figure 2 A partial schematic diagram of point A in the middle;

[0024] Label Explanation:

[0025] 1. Main frame, 2. Support beam, 3. Upper lifting lug, 4. Lower lifting lug, 41. Through hole, 5. First steel cable, 6. Connecting assembly, 61. Shackle, 62. Second steel cable, 7. Cable storage reel, 71. Winding post, 72. Bracket, 8. Damper. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Please refer to the appendix. Figure 1 To be continued Figure 3 The first embodiment of this utility model provides a lifting device suitable for lifting large cable storage reels. It includes a circular main frame 1, within which multiple support beams 2 are evenly distributed. The two ends of each support beam 2 are welded to the inner wall of the main frame 1 to prevent deformation of the main frame 1 during cable storage reel lifting. Multiple upper lifting lugs 3 are evenly welded to the upper end of the main frame 1, and multiple lower lifting lugs 4 are evenly welded to the lower end. The upper lifting lugs 3 are used for fixed connection to a first steel cable 5 on a crane hook; the lower lifting lugs 4 are used for detachable connection to the cable storage reel 7 via connecting components 6. It is understood that in this embodiment, the multiple connecting plates evenly arranged on the upper and lower ends of the circular main frame 1 prevent imbalance of forces during the lifting of large cable storage reels. Thus, this utility model not only achieves force balance during the lifting of large cable storage reels but also simplifies the overall structure. This invention improves upon the existing lifting tools' irregularity and insufficient lifting points, which easily lead to unbalanced forces on the cable storage reel during lifting, resulting in deformation of the reel under stress. However, those skilled in the art should understand that in other embodiments, the main frame 1 can also be a regular hexagonal shape.

[0029] Preferably, the number of support beams 2 is three, which simplifies the internal structure of the main frame 1 while ensuring its performance. However, those skilled in the art will understand that in other embodiments, the number of support beams 2 may also be four, five, or six, etc., and this utility model does not impose specific limitations.

[0030] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, the connecting assembly 6 includes a shackle 61 and a second steel cable 62. The lower lifting lug 4 has a through hole 41 for the horizontal bolt of the shackle 61 to pass through and insert. Both ends of the horizontal bolt are connected to the buckle body of the shackle 61, allowing the shackle 61 to be fully connected to the lower lifting lug 4. This invention's use of the shackle 61 connection method not only facilitates subsequent hoisting of the cable storage reel 7 but also ensures the sealing performance of the connection and improves structural rigidity. After the shackle 61 is installed on the lower lifting lug 4, the second steel cable 62 should pass through the buckle body of the shackle 61. The inner end of the second steel cable 62 is used to connect with the corresponding lifting point at the bottom of the side wall of the cable winding post 71 inside the cable storage reel 7, and the outer end is used to connect with the corresponding lifting point outside the cable storage reel 7. The second steel cable 62 connects to the inner and outer surfaces of the cable storage reel 7, making the cable more evenly stressed and reducing the swaying of the cable storage reel 7 during hoisting, thus improving the stability of the hoisting operation.

[0031] Please refer to the appendix. Figure 3 In one preferred embodiment, the length of the through hole 41 is smaller than the length of the horizontal bolt of the shackle 61, so as to facilitate the installation of the shackle 61 on the lower lifting lug 4. Further, the upper lifting lug 3 is shaped like an equilateral triangle, and the lower lifting lug 4 is shaped like an inverted triangle. The upper tip of the upper lifting lug 3 and the lower tip of the lower lifting lug 4 are rounded. Thus, the connecting plate, while saving costs, also reduces the stress concentration effect at the tip of the connecting plate, thereby preventing breakage at the tip of the connecting plate. However, those skilled in the art should understand that in other embodiments, the shapes of the upper lifting lug 3 and the lower lifting lug 4 can also be other shapes, and this utility model does not impose specific limitations.

[0032] Preferably, the second steel cable 62 is a flexible steel cable or elastic rope to allow the cable storage reel 7 to be freely adjusted within a small range.

[0033] Please refer to the appendix. Figure 1In one preferred embodiment, there are four upper lifting lugs 3 and ten lower lifting lugs 4, with the four lower lifting lugs 4 located directly below the four upper lifting lugs 3, resulting in a neat and aesthetically pleasing overall structure of the lifting device. As described above, the lifting device of this application has a total of ten evenly distributed lifting points, enabling it to not only adapt to the lifting operations of large cable reels but also improving the uniformity, stability, and safety of load distribution, and extending the lifespan of the lifting device, making it suitable for various complex working conditions.

[0034] Preferably, the main frame 1 and the lifting lugs 3 and 4 are all made of high-strength lightweight materials, including aluminum alloy or carbon fiber composite materials, to improve the load-bearing capacity and durability of the lifting device while reducing its own weight.

[0035] Furthermore, it also includes a safety monitoring component, which comprises sensors and a controller, alarm, and emergency stop switch installed on the crane. The sensors are fixed to the first steel cable 5. When the tensile stress of the first steel cable 5 exceeds a set range, the sensors can transmit a signal to the controller wirelessly or via wired means. At this time, the controller controls the alarm to issue an alarm signal, and simultaneously controls the emergency stop switch to trigger, cutting off the crane's power system. This protects the crane and extends its service life. The controller also has a self-testing function, used to automatically detect the connection status and functionality of each component before the lifting device is started.

[0036] Please refer to the appendix. Figure 2 In one preferred embodiment, a damper 8 is connected to the bottom end of the cable storage reel 7 via a flexible connector to absorb the swaying energy of the lifting equipment during the lifting process, thereby reducing the vibration amplitude and improving the safety of the lifting operation. Simultaneously, the damper 8 is not positioned beyond the support 72 at the bottom end of the cable storage reel 7, thus preventing damage from collisions.

[0037] The following are the methods of using the lifting device of this utility model:

[0038] After the lifting equipment is assembled, the first steel cable 5 on the lifting equipment should be mounted on the hook of the crane. The inner end of the second steel cable 62 should be fixed with the corresponding lifting point at the bottom of the side wall of the cable winding column 71 inside the cable storage reel 7, and the outer end should be fixed with the corresponding lifting point outside the cable storage reel 7. After all the second steel cables 62 are assembled, start the crane to realize the lifting operation of the cable storage reel 7.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A lifting device, characterized in that: The system includes a main frame (1) with a regular shape, and multiple support beams (2) are evenly distributed inside the main frame (1). The two ends of the support beams (2) abut against the inner wall of the main frame (1). Multiple upper lifting lugs (3) are evenly distributed at the upper end of the main frame (1), and multiple lower lifting lugs (4) are evenly distributed at the lower end. The upper lifting lugs (3) are used to be fixedly connected to the first steel cable (5) on the hook of the crane, and the lower lifting lugs (4) are used to be detachably connected to the cable storage tray (7) through the connecting assembly (6).

2. The lifting device according to claim 1, characterized in that: The connecting assembly (6) includes a shackle (61) and a second steel cable (62). The lower lifting lug (4) has a through hole (41) for the horizontal bolt of the shackle (61) to pass through and be inserted. The second steel cable (62) passes through the buckle body of the shackle (61), and the inner end of the second steel cable (62) is used to connect with the lifting point corresponding to the bottom end of the side wall of the winding post (71) inside the cable storage reel (7), and the outer end is used to connect with the lifting point corresponding to the outside of the cable storage reel (7).

3. The lifting device according to claim 2, characterized in that: The length of the through hole (41) is smaller than the length of the cross bolt of the shackle (61).

4. The lifting device according to claim 1, characterized in that: The upper hanging ear (3) is shaped like an equilateral triangle, and the lower hanging ear (4) is shaped like an inverted triangle; the upper tip of the upper hanging ear (3) and the lower tip of the lower hanging ear (4) are arc-shaped.

5. The lifting device according to claim 2, characterized in that: The second steel cable (62) is a flexible steel cable or an elastic rope.

6. The lifting device according to claim 1, characterized in that: The number of upper hanging ears (3) is 4, and the number of lower hanging ears (4) is 10, with the 4 lower hanging ears (4) located directly below the 4 upper hanging ears (3).

7. The lifting device according to claim 1, characterized in that: The main frame (1) is circular or hexagonal. The main frame (1) and the lugs (3, 4) are both made of high-strength lightweight materials, including aluminum alloy or carbon fiber composite materials.

8. The lifting device according to claim 1, characterized in that: It also includes a security monitoring component, which includes: A strain sensor installed on the first steel cable (5) is used to detect the tensile stress of the first steel cable (5) in real time; The controller, installed in the control cabinet on the crane, communicates with the strain sensor wirelessly or via wired means. The alarm is electrically connected to the controller and is used to issue an alarm signal when tensile stress exceeds a set range. The emergency stop switch is connected to the controller. When the tensile stress exceeds the set range, the emergency stop switch is automatically triggered to cut off the power system of the crane.

9. The lifting device according to claim 8, characterized in that: The controller also has a self-testing function, which is used to automatically detect the connection status and function of each component before the spreader is started.

10. The lifting device according to claim 1, characterized in that: The bottom end of the cable storage reel (7) is connected to a damper (8) via a flexible connector. The damper (8) is not set beyond the bracket (72) at the bottom end of the cable storage reel (7).

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