Adjustable shafting lifting appliance

Abstract

The utility model discloses an adjustable shafting lifting appliance, which belongs to the technical field of shafting lifting and comprises a main fixing plate, a rotatable lifting rod component is arranged on one side of the top of the main fixing plate close to the central position, a lifting hook for lifting is arranged at one end of the rotatable lifting rod component, and the rotatable lifting rod component can drive the lifting hook to rotate. The rotatable lifting rod assembly comprises a rotating seat, the rotating seat is positioned and mounted on one side of the top of the main fixing plate through a screw rod and is close to the center, a connecting lifting rod is rotatably connected into the rotating seat, and the connecting lifting rod is of an inverted-L-shaped structure. A first pin hole is formed in the rotating seat, a plurality of second pin holes are formed in one end of the connecting lifting rod in the circumferential direction in an array mode, when the adjustable shafting lifting tool is used, the rotatable lifting rod assembly can drive the lifting hook to rotate so as to adjust the position of the lifting hook on the upper side to guarantee the position of the lifting gravity center, and practicability is high.

Description

Technical Field

[0001] This utility model relates to adjustable shaft lifting devices and belongs to the field of shaft lifting technology. Background Technology

[0002] In the fields of industrial production and engineering construction, shaft hoisting is a common and critical task, widely used in many industries such as shipbuilding and large-scale machinery installation. However, shaft hoisting always faces the problem of uneven center of gravity, which brings many challenges to the hoisting operation. Shafts are usually characterized by complex structures and irregular shapes, and their mass distribution is uneven, making it difficult to accurately grasp the center of gravity during hoisting. Traditional hoisting methods often rely on experienced operators to estimate and adjust, but this method has a large degree of subjectivity and uncertainty, which can easily lead to the shaft tilting, swaying, or even safety accidents during hoisting. In addition, the center of gravity position of shafts of different types and specifications will also be different during hoisting, further increasing the difficulty of hoisting operations.

[0003] Uneven center of gravity during hoisting can cause additional stress and wear on hoisting equipment, shorten its service life, and increase maintenance costs. At the same time, instability during hoisting may damage the shaft system itself, affecting its accuracy and performance, and consequently affecting the normal operation of the entire equipment. Therefore, how to effectively solve the problem of uneven center of gravity during shaft hoisting and improve the safety and efficiency of hoisting operations has become a technical challenge to be solved. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable shaft lifting device to solve the above problems. It allows the hook to rotate to adjust the position of the upper hook to ensure the position of the lifting center of gravity, and is highly practical.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: an adjustable shaft lifting device, including a main fixed plate, a rotatable lifting rod assembly is provided on one side of the top of the main fixed plate near the center position, one end of the rotatable lifting rod assembly is provided with a lifting hook for lifting, and the rotatable lifting rod assembly can drive the lifting hook to rotate, thereby changing the position of the lifting hook, and thus realizing the adjustment of the lifting center of gravity position.

[0006] Preferably, in order to make the connecting rod rotatable, the rotatable rod assembly includes a rotating seat, which is positioned on one side of the top of the main fixing plate near the center by a screw, and the connecting rod is rotatably connected inside the rotating seat.

[0007] Preferably, in order to enable the connecting rod to cooperate with the rotating seat, the connecting rod has an inverted L-shaped structure, the rotating seat has a first pin hole, and one end of the connecting rod has a plurality of second pin holes arranged in an array along the circumferential direction.

[0008] Preferably, in order to position the connecting rod, a rotary telescopic positioning pin is provided at the position where the first pin hole and the second pin hole communicate with each other. The rotary telescopic positioning pin is used to position the connecting rod within the rotating seat.

[0009] Preferably, in order to secure the hook, the hook is fastened to the other end of the connecting rod by a screw.

[0010] Preferably, in order to facilitate the use of the spindle fixing fixture, the main fixing plate has a T-shaped structure, and the spindle fixing fixture is positioned at the center of the main fixing plate by a screw.

[0011] Preferably, in order to facilitate the use of the secondary shaft fixing fixture, the secondary shaft fixing fixture is positioned on both ends of the main fixing plate by screws, and a pair of shift fork fixing sleeves are installed on one side of the main shaft fixing fixture on the main fixing plate by screws.

[0012] The beneficial effects of this utility model are as follows: by setting a rotatable boom assembly and connecting the hook to the assembly, the problem of uneven center of gravity during hoisting can be effectively solved. The rotatable boom assembly has a flexible rotation function, which can drive the hook to rotate. In the actual hoisting process, the position of the hook can be adjusted by rotating the rotatable boom assembly. This flexible adjustment of the hook position can accurately balance the weight distribution of each part of the shaft system, thereby ensuring the stability of the hoisting center of gravity. This design improves the safety and efficiency of hoisting operations and significantly enhances its practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a bottom view of the structure of this utility model.

[0015] Figure 3 This is an exploded structural diagram of the rotatable boom assembly in this utility model.

[0016] In the diagram: 1. Main fixing plate; 2. Rotatable lifting rod assembly; 201. Rotary seat; 202. Connecting lifting rod; 203. Rotary telescopic positioning pin; 3. Lifting hook; 4. Main shaft fixing fixture; 5. Secondary shaft fixing fixture; 6. Shift fork fixing sleeve. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3 As shown, the adjustable shaft lifting device includes a main fixed plate 1. A rotatable lifting rod assembly 2 is provided on one side of the top of the main fixed plate 1 near the center position. One end of the rotatable lifting rod assembly 2 is provided with a lifting hook 3 for lifting. The rotatable lifting rod assembly 2 can drive the lifting hook 3 to rotate, thereby changing the position of the lifting hook 3 and thus realizing the adjustment of the lifting center of gravity. The main fixed plate 1 has a T-shaped structure. A main shaft fixing fixture 4 is positioned at the center of the main fixed plate 1 by a screw. A secondary shaft fixing fixture 5 is positioned at both ends of the main fixed plate 1 by a screw. On the main fixed plate 1, a pair of fork fixing sleeves 6 are installed on one side of the main shaft fixing fixture 4 by a screw. The lifting hook 3 is fastened to the other end of the connecting rod 202 by a screw.

[0019] Before lifting, the operator will make a preliminary judgment on the approximate position of the lifting center of gravity based on factors such as the specific shape and weight distribution of the shaft system. Then, the rotatable lifting rod assembly 2 will be operated to drive the hook 3 to rotate. By rotating the hook 3, its position in the horizontal direction will be changed, thereby adjusting the relative positional relationship between the hook 3 and the center of gravity of the shaft system. During the rotation, the operator will closely observe the state of the shaft system and continuously fine-tune the position of the hook 3 according to the actual situation until the shaft system reaches a balanced state. Once the position of the hook 3 is adjusted and the shaft system is balanced, the lifting operation can be carried out. External lifting equipment such as a crane will hook the hook 3 and slowly lift the lifting device. During the lifting process, because the position of the hook 3 has been precisely adjusted, the shaft system can maintain a stable state without significant tilting or swaying. The adjustment of the center of gravity allows the shaft system to quickly reach a balanced state, reducing the preparation time and number of adjustments before lifting. At the same time, the stable lifting process avoids the problem of limited lifting speed caused by shaft swaying, thus improving the overall lifting efficiency.

[0020] The rotatable rod assembly 2 includes a rotating base 201, which is positioned on one side of the top of the main fixing plate 1 near the center by a screw. A connecting rod 202 is rotatably connected inside the rotating base 201. The connecting rod 202 has an inverted L-shaped structure. A first pin hole is provided on the rotating base 201. A plurality of second pin holes are provided in an array along the circumferential direction at one end of the connecting rod 202. A rotary telescopic positioning pin 203 is provided at the position where the first pin hole and the second pin hole communicate with each other. The rotary telescopic positioning pin 203 is used to position the connecting rod 202 within the rotating base 201.

[0021] When adjusting the position of the hook 3, the operator pulls the rotary telescopic positioning pin 203 out of the first pin hole of the rotating seat 201 and the second pin hole of the connecting rod 202, releasing the positioning restriction on the connecting rod 202. At this time, since the connecting rod 202 is rotatably installed in the rotating seat 201, the operator can manually push the inverted L-shaped connecting rod 202 to rotate it around the connection point of the rotating seat 201. During the rotation, the hook 3 rotates synchronously with the connecting rod 202, thereby changing its position in the horizontal direction. When the hook 3 is adjusted to the position that can balance the center of gravity of the shaft system, the rotary telescopic positioning pin 203 is inserted into the corresponding connected first pin hole and second pin hole to ensure that the position of the hook 3 is stable and the initial adjustment of the lifting center of gravity is completed.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable shaft lifting device, characterized in that: Includes a main fixing plate (1), and a rotatable lifting rod assembly (2) is provided on one side of the top of the main fixing plate (1) near the center position. One end of the rotatable lifting rod assembly (2) is provided with a lifting hook (3) for lifting, and the rotatable lifting rod assembly (2) can drive the lifting hook (3) to rotate, thereby changing the position of the lifting hook (3) and thus realizing the adjustment of the lifting center of gravity position.

2. The adjustable shaft lifting device according to claim 1, characterized in that: The rotatable rod assembly (2) includes a rotating seat (201), which is positioned on the top side of the main fixing plate (1) near the center by a screw. A connecting rod (202) is rotatably connected inside the rotating seat (201).

3. The adjustable shaft lifting device according to claim 2, characterized in that: The connecting rod (202) has an inverted L-shaped structure, the rotating seat (201) has a first pin hole, and one end of the connecting rod (202) has multiple second pin holes arranged in an array along the circumferential direction.

4. The adjustable shaft lifting device according to claim 3, characterized in that: A rotary telescopic positioning pin (203) is provided at the position where the first pin hole and the second pin hole communicate with each other. The rotary telescopic positioning pin (203) is used to position the connecting rod (202) in the rotating seat (201).

5. The adjustable shaft lifting device according to claim 4, characterized in that: The hook (3) is fastened to the other end of the connecting rod (202) by a screw.

6. The adjustable shaft lifting device according to claim 1, characterized in that: The main fixing plate (1) has a T-shaped structure, and a main shaft fixing fixture (4) is positioned at the center of the main fixing plate (1) by a screw.

7. The adjustable shaft lifting device according to claim 6, characterized in that: The main fixing plate (1) has a secondary shaft fixing fixture (5) positioned on both ends by screws. On the main fixing plate (1), a pair of shift fork fixing sleeves (6) are installed on one side of the main shaft fixing fixture (4) by screws.

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