Anti-swing device for electric hoist
By using a fixed sleeve and a movable sleeve structure, the problem of chain swaying in electric hoists was solved, achieving cost reduction and improved cargo stability without increasing guide rails and space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TOPTEC HOISTING MASCH WUXI CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-02
AI Technical Summary
Existing electric hoists pose a risk of goods falling off due to chain swaying caused by external forces during use. Furthermore, existing solutions require additional components and guide rails, which take up space and are costly.
The system employs a fixed sleeve and a movable sleeve structure, with the chain passing through both sleeves. A baffle plate is located outside the movable sleeve, with the baffle plate having a diameter larger than the inner diameter of the sleeve. Stable lifting and lowering of the chain is achieved through guide blocks and guide grooves, preventing swaying.
This achieves cost reduction, prevents chain swaying, and ensures cargo stability without adding guide rails or extra space.
Smart Images
Figure CN224313156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to electric hoists, specifically an anti-sway device for electric hoists. Background Technology
[0002] Electric hoists are tools that use chains to hook goods up, move them horizontally, and lower them for delivery. During this process, the chain may sway due to external forces such as strong winds, posing a risk of goods falling off. Currently, electric hoists address swaying by using pulleys and wire ropes, but this method requires many additional components and guide rails, making it cumbersome and space-consuming. Utility Model Content
[0003] To overcome the shortcomings of the prior art, this utility model provides an anti-sway device for electric hoists. This utility model has a simple structure, does not require guide rails, does not occupy additional space, and has low cost.
[0004] To achieve the above technical objectives, the present invention adopts the following technical solution: an anti-sway device for an electric hoist, comprising an electric hoist body and a chain, wherein the electric hoist body is provided with a fixed sleeve, and a movable sleeve is connected to the outside of the fixed sleeve, the movable sleeve being able to extend and retract vertically, the chain passing through the fixed sleeve and the movable sleeve, a hook being provided at the end of the chain, a baffle being provided at the base of the hook, the baffle and the hook being located outside the movable sleeve, and the outer diameter of the baffle being larger than the inner diameter of the movable sleeve.
[0005] The electric hoist body is provided with an installation plate. The upper end of the fixed sleeve is fixed to the installation plate. The lower end of the fixed sleeve extends into the interior of the movable sleeve. A guide block is provided at the lower end of the fixed sleeve. A guide groove is opened on the inner wall of the movable sleeve. The guide block is placed in the guide groove. The movable sleeve can move up and down along the fixed sleeve.
[0006] The lower end of the fixed sleeve is a first flared opening.
[0007] The lower end of the movable sleeve is a second flare.
[0008] In summary, this utility model achieves the following technical effects:
[0009] This utility model has a simple structure, does not require guide rails, does not occupy extra space, and has low cost. Attached Figure Description
[0010] Figure 1 It is an anti-sway device for electric hoists;
[0011] Figure 2 This is a partial schematic diagram of the lower end of the fixed sleeve;
[0012] Figure 3 This is a partial schematic diagram of the lower end of the movable sleeve. Detailed Implementation
[0013] The present invention will be further described in detail below with reference to the accompanying drawings.
[0014] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are 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 are not intended to 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.
[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0018] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0019] Example:
[0020] Figure 1 An anti-sway device for an electric hoist includes an electric hoist body 1 and a chain 4. The electric hoist body 1 is provided with a fixed sleeve 2, and a movable sleeve 3 is connected to the outside of the fixed sleeve 2. The movable sleeve 3 can extend and retract vertically. The chain 4 passes through the fixed sleeve 2 and the movable sleeve 3. A hook 5 is provided at the end of the chain 4, and a baffle 7 is provided at the base of the hook 5. The baffle 7 and the hook 5 are located outside the movable sleeve 3, and the outer diameter of the baffle 7 is larger than the inner diameter of the movable sleeve 3.
[0021] Figure 2 This is a partial schematic diagram of the lower end of the fixed sleeve. Figure 3 This is a partial schematic diagram of the lower end of the movable sleeve. The electric hoist body 1 is provided with a mounting plate 6. The upper end of the fixed sleeve 2 is fixed to the mounting plate 6. The lower end of the fixed sleeve 2 extends into the interior of the movable sleeve 3. A guide block 22 is provided at the lower end of the fixed sleeve 2. A guide groove 32 is opened on the inner wall of the movable sleeve 3. The guide block 22 is placed in the guide groove 32. The movable sleeve 3 can move up and down along the fixed sleeve 2.
[0022] The movable sleeve 3 of this utility model can move up and down along the fixed sleeve 2, which is fixed to the electric hoist body 1. After the chain 4 is lowered and hooks the goods, the electric hoist controls the chain 4 to rise. When the baffle 7 contacts the lower end of the movable sleeve 3, the chain 4 continues to rise, and the baffle 7 carries the movable sleeve 3 up. The movable sleeve 3 moves up and down along the fixed sleeve 2, and rises to the maximum position of the mounting plate 6. At this time, the movable sleeve 3 and the fixed sleeve 2 are almost overlapping, and the chain will not shake or sway inside the fixed sleeve 2.
[0023] After chain 4 is lowered and hooks the goods, the height at which chain 4 rises is manually controlled by the electric hoist. When the baffle 7 is still below the moving sleeve 3 and not in contact, the chain is located inside the moving sleeve and the fixed sleeve to prevent swaying. When the baffle 7 drives the moving sleeve 3 to rise a certain distance, it can also prevent swaying, which is more suitable for occasions of any height.
[0024] The lower end of the fixed sleeve 2 is a first flared opening 21.
[0025] The lower end of the movable sleeve 3 is a second flared opening 31.
[0026] Both the first flare 21 and the second flare 31 are used to facilitate chain movement.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims
1. An anti-sway device for an electric hoist, characterized in that: The device includes an electric hoist body (1) and a chain (4). The electric hoist body (1) is provided with a fixed sleeve (2). A movable sleeve (3) is connected to the outside of the fixed sleeve (2). The movable sleeve (3) can extend and retract vertically. The chain (4) passes through the fixed sleeve (2) and the movable sleeve (3). A hook (5) is provided at the end of the chain (4). A baffle (7) is provided at the root of the hook (5). The baffle (7) and the hook (5) are located outside the movable sleeve (3). The outer diameter of the baffle (7) is larger than the inner diameter of the movable sleeve (3).
2. The anti-sway device for an electric hoist according to claim 1, characterized in that: The electric hoist body (1) is provided with an mounting plate (6). The upper end of the fixed sleeve (2) is fixed to the mounting plate (6). The lower end of the fixed sleeve (2) extends into the interior of the movable sleeve (3). The lower end of the fixed sleeve (2) is provided with a guide block (22). The inner wall of the movable sleeve (3) is provided with a guide groove (32). The guide block (22) is placed in the guide groove (32). The movable sleeve (3) can move up and down along the fixed sleeve (2).
3. The anti-sway device for an electric hoist according to claim 1, characterized in that: The lower end of the fixed sleeve (2) is a first flared opening (21).
4. The anti-sway device for an electric hoist according to claim 1, characterized in that: The lower end of the movable sleeve (3) is a second flared opening (31).