Lifting frame for replacing crankshaft of cargo ship

Abstract

The utility model discloses a lifting frame for replacing a crankshaft of a cargo ship, which relates to the field of lifting frames and comprises a frame body, a butt-joint block is detachably mounted on the frame body, a butt-joint rod is mounted at the end of the butt-joint block, and a threaded hole corresponding to a bolt is formed in the top of the butt-joint rod. The butt joint blocks detachably mounted on the frame body are arranged, the butt joint grooves are matched with the butt joint rods, mounting and replacement are facilitated, the butt joint blocks can be quickly replaced when threaded holes are damaged, maintenance difficulty is lowered, the butt joint rods are symmetrically arranged in multiple sets and correspond to bolts in position, connection stability is improved, angle change is avoided, and the butt joint blocks are convenient to mount and replace. The installation difficulty is reduced through the arc-shaped fillet design of the opening of the butt-joint groove and the oblique angle design of the butt-joint rod and related parts, in addition, the positioning block in the installation base can limit the position of the butt-joint block, the safety of installation, use and maintenance is improved, the driving mechanism facilitates operation of the positioning block, and it is ensured that the butt-joint block is installed stably.

Description

Technical Field

[0001] The utility model relates to the field of hoisting racks, in particular to a hoisting rack for replacing a crankshaft of a cargo ship. Background Art

[0002] During cargo ship operation, the crankshaft, a critical power transmission component, has a direct impact on the ship's smooth sailing. As a ship ages and experiences various complex operating conditions, the crankshaft may become worn and damaged, necessitating replacement. However, cargo ship crankshafts are typically large and heavy, requiring specialized lifting equipment for replacement. The crane for cargo ship crankshaft replacement was developed to address this need, providing crucial technical support for the safe and efficient replacement of cargo ship crankshafts.

[0003] The existing lifting frame for replacing the crankshaft of a cargo ship mainly includes a main frame, a lifting device connecting parts and a supporting part. It is mainly used to install a mobile lifting device, and plays a role in supporting and limiting the mobile lifting device to ensure that the mobile lifting device can slide smoothly in the cabin. The connection method between it and the top of the cabin is mainly through opening a threaded hole on the top of the lifting frame, and then matching the threaded hole of the lifting frame with the connecting seat installed on the top of the cabin. Finally, the connection is completed by passing the bolt through the connecting seat and fixing it with the threaded hole.

[0004] However, in actual use, the above-mentioned crane for replacing the crankshaft of a cargo ship will shake during the long-term transportation. This continuous shaking will cause the threaded holes on the crane to gradually wear out, and in severe cases, they will even be damaged. Once there is a problem with the threaded hole, it will affect the stability and safety of the crane. At this time, it is necessary to drill the threaded holes on the crane again or disassemble the crane for repositioning, which will undoubtedly make the subsequent maintenance of the crane very inconvenient. Therefore, it is urgently necessary to improve the existing crane for replacing the crankshaft of a cargo ship. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a lifting frame for replacing a cargo ship crankshaft to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a lifting frame for replacing a crankshaft of a cargo ship, comprising a frame body, a docking block being detachably mounted on the frame body, a docking rod being mounted at the end of the docking block, and a threaded hole corresponding to a bolt being formed at the top of the docking rod;

[0007] A mounting seat is installed at the bottom of the frame, and a positioning block for limiting the docking block is slidably installed in the mounting seat, and a driving mechanism for driving the positioning block is provided in the mounting seat.

[0008] By adopting the above technical solution, the docking block can be quickly replaced when the threaded hole is damaged, reducing the difficulty of maintenance.

[0009] Furthermore, the docking rods are symmetrically installed in multiple groups at the ends of the docking blocks, and the number and positions of the docking rods correspond to the number and positions of the bolts that need to be installed.

[0010] By adopting the above technical solution, the angle change of the docking block is effectively avoided, and its stability during use and sliding is improved.

[0011] Furthermore, the bottom of the frame is provided with a plurality of docking grooves corresponding to the docking blocks, and the opening positions of the docking grooves are all designed with arc-shaped rounded corners.

[0012] By adopting the above technical solution, the difficulty of the docking block entering the docking groove is effectively reduced.

[0013] Furthermore, a docking hole communicating with the docking groove is provided on the top of the frame, and the docking hole corresponds to the docking rod.

[0014] By adopting the above technical solution, each set of docking rods is smoothly connected to the frame through the corresponding docking holes.

[0015] Furthermore, the top corners of the docking block and the top corners of the docking rod are both beveled, and the connection position between the docking groove and the docking hole and the top opening edge of the threaded hole are both beveled.

[0016] By adopting the above technical solution, the difficulty of the docking rod entering the docking groove and the difficulty of the bolt entering the threaded hole are effectively reduced.

[0017] Furthermore, the mounting seat and the positioning block are provided on the outside of each set of the docking grooves, and the corner of one side of the end of the positioning block away from the docking block is designed to be beveled.

[0018] By adopting the above technical solution, the position of the docking block will be pre-fixed after it enters the docking groove, making it convenient for the user to install the bolts later.

[0019] Furthermore, the driving mechanism includes a handle slidably mounted on the side wall of the mounting seat, and the handle is fixedly connected to the side wall of the positioning block, and a spring fixedly connected to the inner wall of the mounting seat is installed at the end of the positioning block.

[0020] By adopting the above technical solution, after the docking block is completely installed in the docking groove, the positioning block will automatically move to a state of supporting the bottom of the docking block.

[0021] In summary, the present invention has the following beneficial effects:

[0022] The utility model is provided with a docking block that can be detachably mounted on the frame, which is convenient for installation and replacement through the cooperation of the docking groove and the docking rod. When the threaded hole is damaged, the docking block can be quickly replaced, reducing the difficulty of maintenance. Secondly, multiple groups of docking rods are symmetrically arranged and correspond to the positions of the bolts, which improves the stability of the connection and avoids angle changes. Furthermore, the arc-shaped rounded corner design of the docking groove opening and the bevel design of the docking rod and related parts reduce the difficulty of installation. In addition, the positioning block in the mounting seat can limit the position of the docking block, improving the safety of installation, use and maintenance. Its driving mechanism facilitates the operation of the positioning block and ensures that the docking block is firmly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after partial section;

[0025] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional structure from another perspective;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the frame of the utility model;

[0027] Figure 5 For this utility model Figure 2 Enlarged view of point A in the middle;

[0028] Figure 6 For this utility model Figure 3 Enlarged view of point B in the middle.

[0029] In the figure: 1. frame; 2. docking block; 3. docking groove; 4. docking rod; 41. threaded hole; 5. docking hole; 6. mounting seat; 7. positioning block; 71. handle; 72. limit groove; 8. spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] The following describes an embodiment of the present invention based on its overall structure.

[0032] A lifting frame for replacing a cargo ship crankshaft, such as Figure 1 - Figure 6 As shown, it includes a frame 1 for supporting and limiting the lifting equipment;

[0033] The docking block 2 is detachably mounted on the frame body 1 in this embodiment. Since the frame body 1 has multiple groups of docking grooves 3 corresponding to the docking blocks 2 at the bottom, the docking block 2 is slidably connected to the frame body 1 through the docking grooves 3. When the docking block 2 needs to be removed, it can be directly taken out, which is convenient for replacing the docking block 2. Since the end of the docking block 2 is installed with a docking rod 4, and the top of the docking rod 4 is provided with a threaded hole 41 corresponding to the bolt, and the diameter of the docking rod 4 is smaller than the width of the docking block 2, when the frame body 1 needs to be installed in the cargo ship hold, the bolt is passed through the connecting seat installed on the top of the cabin, and then inserted into the threaded hole 41 at the top of the docking rod 4, and finally tightened, which will fix the connection between the docking block 2 and the frame body 1 and the connection between the frame body 1 and the cabin. At this time, the installation of the docking block 2 and the frame body 1 can be completed;

[0034] In this embodiment, multiple groups of docking rods 4 are symmetrically installed at the end of the docking block 2. At the same time, the number and position of the docking rods 4 correspond to the number and position of the bolts to be installed, so that when the frame 1 is connected to the connecting seat installed on the top of the cabin, there will be corresponding threaded holes 41 for installing the bolts. At the same time, the setting of multiple groups of docking rods 4 can effectively prevent the docking block 2 from changing its angle, thereby improving its stability during use and sliding.

[0035] For example, see Figure 1 - Figure 4 A docking hole 5 is provided at the top of the frame 1, which is connected to the docking groove 3. At the same time, the docking hole 5 and the docking groove 3 are matched to penetrate the frame 1. Because the docking hole 5 corresponds to the docking rod 4, each set of docking rods 4 can be smoothly connected to the frame 1 through the corresponding docking hole 5. At the same time, because the top of the docking hole 5 passes through the top of the frame 1, the top of the docking rod 4 will be in the same plane as the top of the frame 1, ensuring that the bolt can smoothly enter the threaded hole 41 at the end of the docking rod 4.

[0036] It should be noted that the top corners of the docking rod 4 in this embodiment are designed with bevels, so that when the docking rod 4 enters the docking groove 3, the bevel at the top of the docking rod 4 will guide itself, reducing the difficulty of its entry into the docking groove 3. Because the connection position between the docking groove 3 and the docking hole 5 and the top opening edge of the threaded hole 41 are both designed with bevels, the bevel of the docking groove 3 will further reduce the difficulty of the docking rod 4 entering the docking groove 3. At the same time, the bevel at the top of the threaded hole 41 will guide the bolt, reducing the difficulty of the bolt entering the threaded hole 41. At the same time, one-fifth of the threaded hole 41 is not threaded, and the position where the thread is not threaded is the inner wall of the opening position of the threaded hole 41, so that the bolt will be inserted into the threaded hole 41 first, and the threaded hole 41 will first restrict the bolt, making it easier to tighten the bolt later.

[0037] For example, when the internal thread of the threaded hole 41 is damaged, the bolt is removed, thereby releasing the connection between the docking block 2 and the frame 1. At this time, the docking block 2 will fall downward under the action of its own gravity, and the user can remove it for replacement. When the threaded hole 41 is damaged, the frame 1 can be maintained quickly and efficiently, effectively reducing the impact of the damage to the threaded hole 41 on the use of the frame 1.

[0038] It should be noted that the opening positions of the docking grooves 3 in this embodiment are all designed with arc-shaped rounded corners. When the docking block 2 enters the docking groove 3, the top corners of the docking block 2 are designed with beveled angles, so that the beveled angles at the top of the docking block 2 and the arc-shaped rounded corners of the opening of the docking groove 3 guide each other, effectively reducing the difficulty of the docking block 2 entering the docking groove 3.

[0039] This embodiment further installs a mounting seat 6 at the bottom of the frame 1, and slides a positioning block 7 in the mounting seat 6. At the same time, the top of the positioning block 7 is in contact with the bottom of the docking block 2 to limit the position of the docking block 2, so that after the docking block 2 enters the docking groove 3, the position will be pre-fixed, which is convenient for the user to install the bolts later and ensures that after the bolts are removed, the docking block 2 will not fall directly with the removal of the bolts, thereby improving safety when replacing the docking block 2.

[0040] In this embodiment, the mounting seat 6 and the positioning block 7 are arranged on the outside of each group of docking grooves 3, so that the docking blocks 2 in each group of docking grooves 3 will have corresponding positioning blocks 7 to restrict them, further ensuring the safety of the hanging frame during installation, use and subsequent positioning. At the same time, because the end of the positioning block 7 is away from the side corner of the docking block 2 and is designed with an oblique angle, when the docking block 2 is installed, it will squeeze the oblique angle of the positioning block 7, forcing the positioning block 7 to automatically enter the mounting seat 6.

[0041] In this embodiment, a driving mechanism for driving the positioning block 7 is also provided in the mounting seat 6;

[0042] In some examples, the driving mechanism includes a handle 71 slidably mounted on the side wall of the mounting base 6 , and the handle 71 is fixedly connected to the side wall of the positioning block 7 . When the user pulls the handle 71 , the positioning block 7 is driven to slide synchronously, ensuring that the positioning block 7 can smoothly obtain the power to slide.

[0043] Because the end of the positioning block 7 is installed with a spring 8 fixedly connected to the inner wall of the mounting seat 6, the spring 8 is compressed when the positioning block 7 slides into the mounting seat 6. When the positioning block 7 loses its restriction, the spring 8 is released and pushes the positioning block 7 outward, so that after the docking block 2 is completely installed in the docking groove 3, the positioning block 7 automatically moves to a state of supporting the bottom of the docking block 2;

[0044] At the same time, a limiting groove 72 corresponding to the handle 71 is opened on the side wall of the mounting seat 6 to ensure that the handle 71 can slide smoothly and ensure the stability of the sliding of the handle 71.

[0045] Of course, in other examples, the driving mechanism may also be an electric push rod or other components. In this embodiment, the specific structure of the driving mechanism is not completely limited.

[0046] The working principle of the present invention is as follows: when the threaded hole 41 is worn and needs maintenance or damaged and affects the use and needs to be replaced, first, unscrew the bolt corresponding to the threaded hole 41, and then unscrew the bolts on all the docking rods 4 on the docking block 2 to release the connection between the docking block 2 and the bolts. At this time, pull the handle 71 to make the bottom of the docking block 2 lose its support, and then remove it for replacement;

[0047] Then, push the new docking block 2 and docking rod 4 into the frame 1 along the docking groove 3. During this process, the docking block 2 will squeeze the bevel of the positioning block 7, forcing it to slide in the direction of the spring 8, causing the spring 8 to be in a compressed state. When the docking block 2 is completely entered into the docking groove 3, the positioning block 7 will lose the restriction given by the docking block 2. At the same time, the spring 8 will push the positioning block 7 outward, causing the positioning block 7 to slide to the bottom of the docking block 2 and restrict it. At this time, the position of the docking block 2 is pre-fixed, and the user can reinstall the bolts. The whole operation is very convenient and simple, and can achieve efficient maintenance of the frame 1.

[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A crane for replacing a cargo ship crankshaft, characterized in that: It comprises a frame (1), a docking block (2) is detachably mounted on the frame (1), a docking rod (4) is mounted at the end of the docking block (2), and a threaded hole (41) corresponding to a bolt is provided at the top of the docking rod (4); A mounting seat (6) is installed at the bottom of the frame (1), and a positioning block (7) for limiting the docking block (2) is slidably installed in the mounting seat (6), and a driving mechanism for driving the positioning block (7) is provided in the mounting seat (6).

2. The crane frame for replacing a cargo ship crankshaft according to claim 1, characterized in that: The docking rods (4) are symmetrically installed in multiple groups at the ends of the docking blocks (2), and the number and positions of the docking rods (4) correspond to the number and positions of the bolts that need to be installed.

3. The crane for replacing a cargo ship crankshaft according to claim 1, characterized in that: The bottom of the frame (1) is provided with a plurality of docking grooves (3) corresponding to the docking blocks (2), and the opening positions of the docking grooves (3) are all designed with arc-shaped rounded corners.

4. The crane frame for replacing a cargo ship crankshaft according to claim 3, characterized in that: A docking hole (5) communicating with the docking groove (3) is provided on the top of the frame body (1), and the docking hole (5) corresponds to the docking rod (4).

5. The crane for replacing a cargo ship crankshaft according to claim 4, characterized in that: The top corners of the docking block (2) and the top corners of the docking rod (4) are both designed to be beveled, and the connection position between the docking groove (3) and the docking hole (5) and the top opening edge of the threaded hole (41) are both designed to be beveled.

6. The crane for replacing a cargo ship crankshaft according to claim 3, characterized in that: The mounting seat (6) and the positioning block (7) are both provided on the outside of each set of the docking grooves (3), and the end of the positioning block (7) is designed with a beveled corner away from the docking block (2).

7. The crane frame for replacing a cargo ship crankshaft according to claim 1, characterized in that: The driving mechanism comprises a handle (71) slidably mounted on the side wall of the mounting seat (6), the handle (71) being fixedly connected to the side wall of the positioning block (7), and a spring (8) fixedly connected to the inner wall of the mounting seat (6) being mounted on the end of the positioning block (7).

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