Anti-drop type mechanical engineering hoisting device
By using a misaligned design of the inner and outer hooks and an anti-slip component for worm gear transmission, the problem of slippage of irregularly shaped or unevenly weighted loads in existing lifting devices has been solved. This has enabled automatic anti-slip and early warning functions, improving the safety of lifting operations and the long-term reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘少东
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-07
AI Technical Summary
Existing lifting devices are prone to slipping when lifting objects with irregular shapes or uneven weight distribution. Furthermore, some anti-detachment hooks are cumbersome to operate or fail due to spring damage, resulting in a weakening of the anti-detachment function.
The anti-slip component, featuring a staggered design of inner and outer hooks, combined with a trigger switch and indicator light, achieves automatic anti-slip. It also adapts to different lifting tool widths through a worm gear transmission adjustment component, enhancing friction to prevent slippage.
It features an automatic anti-detachment warning function that requires no additional operation, adapts to different sizes of suspended objects, improves the safety and reliability of hoisting, and reduces the risk of detachment and maintenance frequency.
Smart Images
Figure CN224467371U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical engineering technology, and more specifically, it relates to a lifting device for mechanical engineering that prevents slippage. Background Technology
[0002] In the field of mechanical engineering, cranes are the core equipment for lifting heavy construction machinery and components. The lifting device is the crucial connection medium between the crane and the object being lifted, responsible for securing the machinery and ensuring lifting safety. Existing lifting devices mainly consist of a lifting frame body, connecting parts, and a hook. During operation, the crane drives the lifting frame body via a lifting line. The hook is fixed to the bottom of the lifting frame body via connecting parts, and a force-bearing connection is formed by hooking the lifting straps or slings of the machinery being lifted, thus completing the lifting and transfer operation.
[0003] The existing application number CN201620026500.7 discloses an anti-detachment hook for lifting C-shaped steel. It features a hook arm with bent ends, one end of which has a hook handle, and one end of the hook handle is a hook handle tip. The hook handle is rotatably mounted on the hook arm via a connector. The other end of the hook arm is a hook head bent into a hook shape. A slot for suspending the C-shaped steel is provided between the tail of the hook head and the hook arm. The tail end face of the hook head is flat. When the C-shaped steel is suspended on the hook head, rotating the hook handle clamps the C-shaped steel between the hook handle tip and the flat surface of the hook head. This hook can clamp C-shaped steel effectively, preventing detachment, is reusable, and is easy to install and disassemble.
[0004] Based on the above, some existing lifting devices rely solely on the simple shape of the C-shaped hook for anti-slip protection. When faced with irregularly shaped or unevenly weighted objects, or when swaying occurs during lifting, the object is prone to slipping off the hook. Other lifting devices, while equipped with anti-slip hooks that use elastic levers to seal the C-shaped hook opening, are cumbersome to operate, requiring the levers to be pressed before removing the object; furthermore, frequent use can damage the internal springs of the levers, directly weakening the anti-slip function. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides an anti-slip lifting device for mechanical engineering. This addresses the issue that some existing lifting devices rely solely on the simple shape of a C-shaped hook for anti-slip, making it prone to slipping off the hook when handling irregularly shaped or unevenly weighted objects, or when swaying occurs during lifting. Other lifting devices, while equipped with anti-slip hooks, use elastic levers to seal the C-shaped hook opening for anti-slip, but this is cumbersome, requiring the lever to be pressed before removing the object; furthermore, frequent use can damage the internal spring of the lever, directly weakening the anti-slip function.
[0006] The purpose and effect of this utility model's anti-detachment type lifting device for mechanical engineering are achieved by the following specific technical means:
[0007] A lifting device for mechanical engineering with anti-detachment features includes a lifting body, a hook, an inner hook, an anti-detachment block, a knob, a limiting block, an anti-detachment component, and an adjusting component. The hook is fixedly installed at the bottom of the lifting body; the inner hook is disposed inside the hook; the anti-detachment block is fixedly connected inside the inner hook; the knob is rotatably connected inside the inner hook; two sets of limiting blocks are provided, and the two sets of limiting blocks are slidably connected relative to each other inside the inner hook; the anti-detachment component is disposed inside the hook; and the adjusting component is disposed inside the inner hook.
[0008] Furthermore, the anti-detachment component includes a sliding groove, which is formed inside the hook and is vertically slidably connected to an inner hook.
[0009] Furthermore, the anti-detachment component also includes: guide rods and elastic elements. The guide rods are provided in two sets, with the two sets of guide rods fixedly connected to the bottom of the inner hook and the two sets of guide rods slidably connected to the bottom of the hook. The elastic elements are provided in two sets, with the top ends of the two sets of elastic elements fixedly connected to the bottom of the hook and the ends of the two sets of elastic elements respectively fixedly connected to the ends of the two sets of guide rods.
[0010] Furthermore, the anti-detachment component also includes a trigger switch and an indicator light. The trigger switch is fixedly installed on the top of the sliding groove; the indicator light is fixedly installed on the front side of the hook. The indicator light and the trigger switch are connected together by wires and power supply to form a switching circuit.
[0011] Furthermore, the adjustment component includes: anti-slip grooves, and multiple sets of anti-slip grooves are provided, with the multiple sets of anti-slip grooves being formed inside the anti-detachment block.
[0012] Furthermore, the adjustment assembly also includes a drive rod and a drive worm gear, wherein the drive rod is rotatably connected inside the inner hook and is fixedly installed at one end of the knob; and the drive worm gear is fixedly installed at one end of the drive rod.
[0013] Furthermore, the adjustment assembly also includes a drive screw and a drive worm gear. The drive screw is rotatably connected inside the inner hook, and both ends of the drive screw are threadedly connected inside two sets of limit blocks. The drive worm gear is coaxially fixedly installed in the middle of the drive screw, and the drive worm gear and the drive worm mesh with each other.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] Firstly, this invention features an anti-slip component that automatically prevents slippage through a misaligned design of the inner and outer hooks. Under normal conditions, the openings of the inner and outer hooks are aligned, forming a channel for easy insertion of the lifting ring or sling. During lifting, the reverse pulling force causes the inner hook to slide down, misaligning the openings and automatically sealing the hook opening. This effectively prevents the lifted object from falling due to swaying or irregular shapes, achieving the anti-slip function without additional manual operation. Simultaneously, a maintenance warning is provided through the coordination of a trigger switch and an indicator light. During normal standby, the indicator light displays green. When the elastic element weakens due to fatigue, preventing the inner hook from triggering the switch, the indicator light continuously displays red, visually prompting the operator to promptly maintain and replace components, preventing the anti-slip performance from diminishing due to component aging and ensuring long-term reliable operation of the equipment.
[0016] Secondly, this invention features an adjustment component that allows for adjustable limit spacing via worm gear transmission. Rotating the knob drives the two sets of limit blocks to slide relative to each other, precisely adapting to lifting rings or straps of different widths. Combined with the anti-slip grooves on the surface of the anti-slip blocks, this enhances contact friction, effectively preventing lateral sliding or swaying of the lifting equipment, improving its adaptability to different lifting specifications, and further eliminating potential safety hazards during lifting operations.
[0017] This invention has the advantages of reliable anti-detachment, simple operation, and direct maintenance. The anti-detachment component automatically seals and warns of aging, reducing the risk of detachment; the adjustment component adapts to different lifting tools to reduce swaying, providing a safer and more efficient guarantee for lifting. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the hook structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the sliding groove structure of this utility model.
[0021] Figure 4 This is a schematic diagram of the anti-detachment block structure of this utility model.
[0022] Figure 5 This is a schematic diagram of the limiting block structure of this utility model.
[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0024] 1. Lifting device body; 2. Hook; 201. Sliding groove; 202. Trigger switch; 203. Indicator light; 3. Inner hook; 301. Guide rod; 302. Elastic element; 4. Anti-detachment block; 401. Anti-slip groove; 5. Knob; 501. Drive rod; 502. Drive worm gear; 6. Limit block; 601. Drive worm wheel; 602. Drive screw. Detailed Implementation
[0025] 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. Example
[0026] As attached Figure 1 To be continued Figure 5 As shown:
[0027] This utility model provides a lifting device for mechanical engineering with anti-detachment features, including a lifting body 1, a hook 2, an inner hook 3, an anti-detachment block 4, a knob 5, a limiting block 6, and an anti-detachment component. The hook 2 is fixedly installed at the bottom of the lifting body 1; the inner hook 3 is disposed inside the hook 2; the anti-detachment block 4 is fixedly connected inside the inner hook 3; the knob 5 is rotatably connected inside the inner hook 3; two sets of limiting blocks 6 are provided, and the two sets of limiting blocks 6 are slidably connected to each other inside the inner hook 3; the anti-detachment component is disposed inside the hook 2.
[0028] The anti-detachment component includes a sliding groove 201, which is opened inside the hook 2 and is vertically slidably connected to an inner hook 3.
[0029] The anti-detachment component also includes: guide rods 301 and elastic elements 302. Two sets of guide rods 301 are provided, and the two sets of guide rods 301 are fixedly connected to the bottom of the inner hook 3 and slidably connected to the bottom of the hook 2. Two sets of elastic elements 302 are provided, and the top ends of the two sets of elastic elements 302 are fixedly connected to the bottom of the hook 2, and the ends of the two sets of elastic elements 302 are respectively fixedly connected to the ends of the two sets of guide rods 301.
[0030] The anti-detachment component also includes a trigger switch 202 and an indicator light 203. The trigger switch 202 is fixedly installed on the top of the sliding groove 201; the indicator light 203 is fixedly installed on the front side of the hook 2. The indicator light 203 and the trigger switch 202 are connected together by wires and power supply to form a switch circuit.
[0031] The specific usage and function of this embodiment are as follows:
[0032] Under normal conditions, the elastic element 302 drives the inner hook 3 to move upward to the top of the sliding groove 201 via the guide rod 301. At this time, the opening direction of the hook 2 and the inner hook 3 are aligned to form a continuous channel, which facilitates the insertion of the lifting ring or sling. At the same time, the inner hook 3 triggers the trigger switch 202 at the top, causing the indicator light 203 to display a green light, and the indicator device is in normal standby state.
[0033] During lifting operations, once the lifting ring or sling passes through the channel and enters the inner hook 3, the reverse pulling force generated by the lifting will press against the anti-detachment block 4, causing the inner hook 3 to slide downwards along the sliding groove 201. During this process, the guide rod 301 and the sliding groove 201 work together to ensure the smooth movement of the inner hook 3, ultimately causing the opening of the hook 2 and the inner hook 3 to become misaligned. The inner hook 3 automatically seals the opening of the hook 2, effectively preventing the lifted object from falling due to shaking.
[0034] When the elastic element 302 weakens due to fatigue wear after prolonged use, the reset height of the inner hook 3 will deviate, making it impossible to trigger the switch 202. At this time, the indicator light 203 will continuously display a red light, which is more obvious when not in a lifting state. This can intuitively remind the operator to maintain and replace the elastic element 302 in a timely manner to ensure the reliable anti-detachment performance of the device. Example
[0035] Based on Example 1, such as Figures 1 to 5 As shown, it also includes: an adjustment component, which is disposed inside the inner hook 3.
[0036] The adjustment component includes: anti-slip groove 401, which is provided in multiple sets and is located inside the anti-detachment block 4.
[0037] The adjustment assembly also includes a drive rod 501 and a drive worm gear 502. The drive rod 501 is rotatably connected inside the inner hook 3 and is fixedly installed at one end of the knob 5. The drive worm gear 502 is fixedly installed at one end of the drive rod 501.
[0038] The adjustment assembly also includes a drive screw 602 and a drive worm gear 601. The drive screw 602 is rotatably connected inside the inner hook 3, and both ends of the drive screw 602 are threadedly connected inside the two sets of limit blocks 6. The drive worm gear 601 is coaxially fixedly installed in the middle of the drive screw 602, and the drive worm gear 601 and the drive worm 502 mesh with each other.
[0039] The specific usage and function of this embodiment are as follows:
[0040] When it is necessary to adapt to lifting rings or slings of different widths, flexible adaptation can be achieved through the adjustment component: turning the knob 5 drives the drive rod 501 to rotate, and the drive rod 501 drives the drive screw 602 to rotate synchronously through the meshing transmission of the drive worm 502 and the drive worm wheel 601. Since the drive screw 602 adopts a reverse thread design at both ends, its rotation will drive the two sets of limit blocks 6 to slide relative to each other inside the inner hook 3, thereby precisely adjusting the distance between them to match the width of the lifting ring or sling.
[0041] After adjustment, the two sets of limiting blocks 6 can form a stable lateral limit on the lifting ring or sling. Together with the multiple sets of anti-slip grooves 401 on the surface of the anti-detachment block 4, they enhance the contact friction and effectively prevent the lifting ring or sling from sliding or swaying laterally during the lifting process, further improving the lifting stability and eliminating the safety hazards caused by the relative displacement between the lifting equipment and the lifted object.
[0042] The following points should be noted in this article:
[0043] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.
[0044] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.
[0045] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.
Claims
1. A lifting device for mechanical engineering with anti-detachment feature, characterized in that: This anti-detachment type lifting device for mechanical engineering includes a lifting body (1), a hook (2), an inner hook (3), an anti-detachment block (4), a knob (5), a limiting block (6), an anti-detachment component, and an adjustment component. The hook (2) is fixedly installed at the bottom of the lifting body (1); the inner hook (3) is located inside the hook (2); the anti-detachment block (4) is fixedly connected inside the inner hook (3); the knob (5) is rotatably connected inside the inner hook (3); two sets of limiting blocks (6) are provided, and the two sets of limiting blocks (6) are slidably connected to each other inside the inner hook (3); the anti-detachment component is located inside the hook (2); and the adjustment component is located inside the inner hook (3).
2. The anti-detachment type lifting device for mechanical engineering as described in claim 1, characterized in that: The anti-detachment component includes: a sliding groove (201), which is opened inside the hook (2), and the sliding groove (201) is vertically slidably connected to an inner hook (3).
3. The anti-detachment type lifting device for mechanical engineering as described in claim 2, characterized in that: The anti-detachment component also includes: guide rods (301) and elastic elements (302). Two sets of guide rods (301) are provided. The two sets of guide rods (301) are fixedly connected to the bottom of the inner hook (3) and the two sets of guide rods (301) are slidably connected to the bottom of the hook (2). Two sets of elastic elements (302) are provided. The top ends of the two sets of elastic elements (302) are fixedly connected to the bottom of the hook (2) and the ends of the two sets of elastic elements (302) are respectively fixedly connected to the ends of the two sets of guide rods (301).
4. The anti-detachment type lifting device for mechanical engineering as described in claim 2, characterized in that: The anti-detachment component also includes a trigger switch (202) and an indicator light (203). The trigger switch (202) is fixedly installed on the top of the sliding groove (201). The indicator light (203) is fixedly installed on the front side of the hook (2). The indicator light (203) and the trigger switch (202) are connected together by a line and a power supply to form a switch circuit.
5. The anti-detachment type lifting device for mechanical engineering as described in claim 1, characterized in that: The adjustment component includes: anti-slip groove (401), and multiple sets of anti-slip groove (401) are provided, and multiple sets of anti-slip groove (401) are opened inside the anti-detachment block (4).
6. The anti-detachment type lifting device for mechanical engineering as described in claim 5, characterized in that: The adjustment assembly further includes a drive rod (501) and a drive worm gear (502). The drive rod (501) is rotatably connected inside the inner hook (3). The drive rod (501) is fixedly installed at one end of the knob (5). The drive worm gear (502) is fixedly installed at one end of the drive rod (501).
7. The anti-detachment type lifting device for mechanical engineering as described in claim 5, characterized in that: The adjustment assembly also includes a drive screw (602) and a drive worm gear (601). The drive screw (602) is rotatably connected inside the inner hook (3), and both ends of the drive screw (602) are threadedly connected inside two sets of limit blocks (6). The drive worm gear (601) is coaxially fixedly installed in the middle of the drive screw (602), and the drive worm gear (601) and the drive worm (502) mesh with each other.