Crankshaft hanger
By designing the stop bar and limit block structure of the crankshaft hook, and combining it with the use of a buffer pad, the problem of hook slippage in the existing technology was solved, thus achieving stability and safety in the lifting process and improving operational efficiency.
Patent Information
- Application Number
- CN202522288317.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-29
AI Technical Summary
The existing crankshaft hook has a semi-open structure and lacks protective devices. During manual transfer, the hook is prone to slipping and falling off due to accidental collisions, which affects operational safety and efficiency.
A crankshaft hook was designed, which uses a stop bar and a limit block to lock and unlock the crankshaft within the hook. Combined with a buffer pad, it increases friction, avoids metal wear, and ensures stability during the lifting process.
It achieves stability and safety of crankshaft hooks during lifting and lowering, avoids accidental slippage, is convenient and quick to use, and reduces metal wear.
Smart Images
Figure CN224677632U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crankshaft hook technology, and more specifically, it relates to a crankshaft hook. Background Technology
[0002] The core function of a crankshaft hook is to safely and stably connect the lifting equipment to the crankshaft, enabling precise lifting and movement of the engine crankshaft in scenarios such as production assembly, maintenance disassembly, and warehousing and transfer. This avoids crankshaft slippage and damage during lifting, ensuring operational safety and efficiency. Existing crankshaft hooks are semi-open structures and lack protective devices. During manual transfer, accidental collisions can easily cause the hook to slip and detach. Therefore, a crankshaft hook is proposed. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a crankshaft hook. When hoisting a crankshaft, the stop lever is pushed inward and then returns to its original position, locking the crankshaft inside the hook. When lowering the crankshaft, pressing the handle causes the limiting rod to disengage from the limiting block, and the limiting block on the stop lever loses its limiting position, allowing it to rotate outward. The stop lever is then knocked outward, thus solving the problem of the semi-open structure mentioned in the background technology, which lacks a protective device and is prone to slippage and detachment of the hook due to accidental collisions during manual transfer.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft hook, comprising a hook, a lifting ring fixed to the upper end of the hook, a buffer pad fixed to the inner arc of the hook, a first support and a second support fixed to the middle of the outer side of the hook, a stop rod rotatably connected to the inner side of the first support, a limit block fixed to one end of the stop rod, a first spring fixed to one side of the stop rod, a handle rotatably connected to the inner side of the second support, an installation groove on one side of the handle, a connecting rod rotatably connected to the inner side of the installation groove, a limit rod rotatably connected to one end of the connecting rod, a bevel on the lower end of the limit rod, a sleeve slidably connected to the middle of the outer side of the limit rod, and a second spring fixed to one side of the handle.
[0005] As a preferred embodiment of this invention, the buffer pad is made of rubber.
[0006] As a preferred embodiment of this utility model, one end of the first spring is fixedly connected to the outside of the hook.
[0007] As a preferred embodiment of this utility model, the limiting rod and the limiting block are engaged in a snap-fit connection.
[0008] As a preferred embodiment of this utility model, one side of the sleeve is fixedly connected to the outer side of the hook.
[0009] As a preferred embodiment of this utility model, one end of the second spring is fixedly connected to the outside of the hook.
[0010] As a preferred embodiment of this invention, the contact surfaces of the limiting rod and the limiting block are perpendicular.
[0011] This utility model provides a crankshaft lifting hook, which has the following beneficial effects: When lifting the crankshaft, the stop lever is pushed inward and then returns to its original position, locking the crankshaft inside the hook. When lowering the crankshaft, pressing the handle disengages the limit lever from the limit block, causing the limit block on the stop lever to lose its limit and allowing it to rotate outward. The stop lever is then knocked outward. This design is convenient and quick to use, solving the problem of slippage and detachment of the hook due to accidental collisions during manual transfer caused by the lack of protective devices in semi-open structures.
[0012] 2. When the crankshaft hook comes into contact with the crankshaft, the buffer pad prevents metal wear caused by hard impact. At the same time, the buffer pad increases the friction when the hook and crankshaft come into contact, effectively reducing the relative slippage between the hook and crankshaft, making the lifting process more stable. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a crankshaft hook according to the present invention.
[0014] Figure 2 This utility model relates to a crankshaft hook. Figure 1 Enlarged diagram of point A in the diagram.
[0015] Figure 3 This is a cross-sectional structural diagram of a crankshaft hook according to the present invention.
[0016] Figure 4 This utility model relates to a crankshaft hook. Figure 3 Enlarged diagram of point B in the image.
[0017] In the diagram: 1. Hook; 2. Ring; 3. Buffer pad; 4. First support; 5. Second support; 6. Stop bar; 7. Limiting block; 8. First spring; 9. Handle; 10. Mounting groove; 11. Connecting rod; 12. Limiting rod; 13. Bevel; 14. Sleeve; 15. Second spring. Detailed Implementation
[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a crankshaft hook, including a hook 1, a lifting ring 2 fixed to the upper end of the hook 1, a buffer pad 3 fixed to the arc-shaped inner side of the hook 1, a first support 4 and a second support 5 fixed to the middle of the outer side of the hook 1, a stop bar 6 rotatably connected to the inner side of the first support 4, a limit block 7 fixed to one end of the stop bar 6, a first spring 8 fixed to one side of the stop bar 6, a handle 9 rotatably connected to the inner side of the second support 5, a mounting groove 10 opened on one side of the handle 9, and a connecting rod 11 rotatably connected to the inner side of the mounting groove 10. One end of the rod 11 is rotatably connected to the limiting rod 12. The lower end of the limiting rod 12 is provided with a bevel 13. The outer middle of the limiting rod 12 is slidably connected to the sleeve 14. A second spring 15 is also fixed on one side of the handle 9. The buffer pad 3 is made of rubber. One end of the first spring 8 is fixedly connected to the outer side of the hook 1. The limiting rod 12 and the limiting block 7 are engaged. One side of the sleeve 14 is fixedly connected to the outer side of the hook 1. One end of the second spring 15 is fixedly connected to the outer side of the hook 1. The contact surface between the limiting rod 12 and the limiting block 7 is perpendicular. During use, hook 1 is fixed to the crane's steel cable via lifting ring 2. Pulling hook 1 hooks it onto the crankshaft. When hook 1 contacts the crankshaft, buffer pad 3 prevents metal abrasion caused by hard impact. Simultaneously, buffer pad 3 increases the friction between hook 1 and crankshaft, effectively reducing relative slippage and making the lifting process more stable. During this process, stop lever 6 is pushed open and rotates inward. Then, under the action of the first spring 8, stop lever 6 springs back to its original position. Because the limiting block 7 on stop lever 6 engages with the limiting rod 12, it restricts the outward rotation of stop lever 6, thus enclosing the crankshaft within hook 1. After the transfer is complete, pressing handle 9 pushes the limit lever 12 via connecting rod 11. The positioning rod 12 moves upward along the sleeve 14, causing the limiting rod 12 to disengage from the limiting block 7. The limiting block 7 on the stop rod 6 loses its limit, allowing it to rotate outward. When the hook 1 is lifted, the stop rod 6 is pushed outward by the crankshaft. Through the above process, when hoisting the crankshaft, the stop rod 6 is pushed inward. Afterward, it returns to its original position and locks the crankshaft inside the hook 1. When lowering the crankshaft, pressing the handle 9 causes the limiting rod 12 to disengage from the limiting block 7. The limiting block 7 on the stop rod 6 loses its limit, allowing it to rotate outward. The stop rod 6 is knocked outward. This method is convenient and quick to use, solving the problem of slippage and detachment of the hook due to accidental collisions during manual transfer caused by the lack of protective devices in semi-open structures.
[0022] The specific usage and function of this embodiment: When using this utility model, the hook 1 is fixed to the crane cable via the lifting ring 2. Pulling the hook 1 onto the crankshaft, the buffer pad 3 prevents metal wear caused by hard impact when the hook 1 contacts the crankshaft. At the same time, the buffer pad 3 increases the friction when the hook 1 and the crankshaft contact, effectively reducing the relative sliding between the hook 1 and the crankshaft, making the hoisting process more stable. During this process, the stop rod 6 is knocked open and rotates inward. Then, under the action of the first spring 8, the stop rod 6 returns to its original position. Since the limiting block 7 on the stop rod 6 is engaged with the limiting rod 12, the outward rotation of the stop rod 6 is restricted, thus sealing the crankshaft. Inside hook 1, after the transfer is completed, press handle 9. Handle 9 pushes limit rod 12 upward along sleeve 14 via connecting rod 11, causing limit rod 12 to disengage from limit block 7. Limit block 7 on stop rod 6 loses its limit, thus allowing it to rotate outward. When hook 1 is lifted, stop rod 6 is pushed outward by crankshaft. Through the above process, when hoisting crankshaft, stop rod 6 is pushed inward. Afterward, it returns to its original position and locks crankshaft inside hook 1. When lowering crankshaft, press handle 9 to disengage limit rod 12 from limit block 7. Limit block 7 on stop rod 6 loses its limit, thus allowing it to rotate outward. Stop rod 6 is knocked outward, making it convenient and quick to use.
[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A crankshaft lifting hook, comprising a hook (1), characterized in that: The hook (1) is fixed with a lifting ring (2) at its upper end. A buffer pad (3) is fixed to the inner arc of the hook (1). A first support (4) and a second support (5) are fixed to the middle outer side of the hook (1). A stop bar (6) is rotatably connected to the inner side of the first support (4). A limit block (7) is fixed to one end of the stop bar (6). A first spring (8) is fixed to one side of the stop bar (6). A handle (9) is rotatably connected to the inner side of the second support (5). An installation groove (10) is provided on one side of the handle (9). A connecting rod (11) is rotatably connected to the inner side of the installation groove (10). A limit rod (12) is rotatably connected to one end of the connecting rod (11). A bevel (13) is provided at the lower end of the limit rod (12). A sleeve (14) is slidably connected to the middle outer side of the limit rod (12). A second spring (15) is also fixed to one side of the handle (9).
2. A crankshaft hook according to claim 1, characterized in that: The buffer pad (3) is made of rubber.
3. A crankshaft hook according to claim 1, characterized in that: One end of the first spring (8) is fixedly connected to the outside of the hook (1).
4. A crankshaft hook according to claim 1, characterized in that: The limiting rod (12) and the limiting block (7) are engaged in a snap-fit relationship.
5. A crankshaft hook according to claim 1, characterized in that: One side of the sleeve (14) is fixedly connected to the outside of the hook (1).
6. A crankshaft hook according to claim 1, characterized in that: One end of the second spring (15) is fixedly connected to the outside of the hook (1).
7. A crankshaft hook according to claim 1, characterized in that: The contact surfaces of the limiting rod (12) and the limiting block (7) are perpendicular.