Anti-falling device of crane

Abstract

The utility model discloses a crane anti-drop device which comprises a lifting hook main body, the lifting hook main body comprises a first vertical section, a horizontal section and a second vertical section which are fixedly connected into a whole in sequence, and a bottom pressing plate is arranged between the first vertical section and the second vertical section in a sliding connection mode. An anti-falling cover plate is slidably connected to the upper portion of the first vertical section, a supporting rod is fixedly connected between the bottom pressing plate and the anti-falling cover plate, mounting plates are fixedly arranged outside the first vertical section and located on the upper side and the lower side of the bottom pressing plate, a guide rod is fixedly connected between the mounting plates, and a spring is arranged on the guide rod and located below the bottom pressing plate in a sleeving mode. By adding the bottom pressing plate, the spring, the supporting rod, the anti-falling cover plate and other components, the problem that a traditional lifting hook is prone to falling off is solved. When a heavy object is hung in the lifting hook, the anti-falling cover plate moves downwards until the hook end of the lifting hook is covered, when materials are unloaded, the anti-falling cover plate rises under the action of the spring, the lifting hook is opened, and therefore the materials can be taken down conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of crane hook devices, in particular to a crane anti-falling device. Background Art

[0002] Crane hooks are common loading and unloading tools used in industrial production, used to suspend and move heavy objects. However, traditional hooks have a significant drawback: when shaken or subjected to other external forces, the rope attached to the hook can easily become detached, posing a safety hazard. To address this issue, the traditional method involves attaching a retaining ring to the hook end. However, this design requires manual operation, making loading inconvenient and requiring manual intervention during unloading, reducing efficiency. Utility Model Content

[0003] A technical issue

[0004] The utility model provides a crane anti-falling device, which aims to solve the problem that the traditional crane hook is prone to falling off, improve the efficiency and safety of loading and unloading operations, and realize the automatic operation of the hook when loading and unloading materials, reduce manual intervention, and improve work efficiency.

[0005] 2. Technical Content

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a crane anti-falling device, including a hook body, a connecting ear plate is fixedly provided on the upper end of the hook body, the hook body includes a first vertical section, a horizontal section and a second vertical section fixedly connected into one in sequence, a bottom pressure plate is slidingly connected between the first vertical section and the second vertical section, an anti-falling cover plate is slidingly connected on the upper part of the first vertical section, a support rod is fixedly connected between the bottom pressure plate and the anti-falling cover plate, mounting plates are fixedly provided on the outside of the first vertical section and on the upper and lower sides of the bottom pressure plate, a guide rod is fixedly connected between the mounting plates, the guide rod passes through the bottom pressure plate and slides with the bottom pressure plate, and a spring is sleeved on the guide rod and located below the bottom pressure plate.

[0007] Furthermore, the support rod passes through the mounting plate located above the bottom pressure plate and is clearance-matched with the mounting plate.

[0008] Furthermore, a slider is fixedly provided at one end of the bottom pressure plate close to the second vertical section, a sliding groove is provided on the inner side surface of the second vertical section, a sliding rod is fixed inside the sliding groove, and the sliding rod passes through the slider and is slidably connected to the slider.

[0009] Furthermore, a through hole is provided on the portion of the anti-falling cover plate close to the second vertical section for the top of the second vertical section to pass through.

[0010] Furthermore, a sliding collar is fixedly provided at one end of the first vertical section and the second vertical section close to the first vertical section, and the sliding collar is in sliding engagement with the first vertical section.

[0011] Three technical effects

[0012] Compared with the existing technology, the utility model has the following advantages: the utility model effectively solves the problem of traditional hooks being easy to fall off by adding components such as a bottom pressure plate, a spring, a support rod and an anti-falling cover plate. When a heavy object is hung inside the hook, the bottom pressure plate is pressed to the bottom of the hook, and at the same time, the anti-falling cover plate moves down under the action of the support rod until it covers the hook end. When the material is unloaded, the pressure of the bottom pressure plate is released, and the anti-falling cover plate rises under the action of the spring, opening the hook and making it easier to remove the material. This design not only improves work efficiency and reduces manual intervention, but also greatly improves safety and reduces the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structure diagram of a crane anti-falling device of the utility model Figure 1 .

[0014] Figure 2 This is a three-dimensional structure diagram of a crane anti-falling device of the utility model Figure 2 .

[0015] Figure 3 The utility model is a schematic diagram of the main structure of a crane anti-falling device.

[0016] Figure 4 The utility model is a left-side structural schematic diagram of a crane anti-falling device.

[0017] As shown in the figure: 1. Hook body; 2. Connecting ear plate; 3. First vertical section; 4. Horizontal section; 5. Second vertical section; 6. Bottom pressure plate; 7. Anti-fall cover plate; 8. Support rod; 9. Mounting plate; 10. Guide rod; 11. Spring; 12. Slider; 13. Slide groove; 14. Slide rod; 15. Through hole; 16. Sliding ring. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction structure and operation. Therefore, they cannot be understood as limitations on the present invention.

[0019] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "provided with," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] The present invention will be described in further detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] Combined with attachment Figure 1 To the attached Figure 4 The lifting device of the present invention is a kind of anti-falling device for a crane, comprising a hook body 1, the upper end of the hook body 1 is fixedly provided with a connecting ear plate 2, the hook body 1 comprises a first vertical section 3, a horizontal section 4 and a second vertical section 5 fixedly connected in sequence, a bottom pressure plate 6 is slidably connected between the first vertical section 3 and the second vertical section 5, the upper part of the first vertical section 3 is slidably connected with an anti-falling cover plate 7, a support rod 8 is fixedly connected between the bottom pressure plate 6 and the anti-falling cover plate 7, the outside of the first vertical section 3 and the upper and lower sides of the bottom pressure plate 6 are fixedly provided with mounting plates 9, the support rod 8 passes through the mounting plate 9 located above the bottom pressure plate 6 and has a clearance fit with the mounting plate 9, the anti-falling cover plate 7 is provided with a through hole 15 for the top of the second vertical section 5 to pass through near the second vertical section 5, a guide rod 10 is fixedly connected between the mounting plates 9, the guide rod 10 passes through the bottom pressure plate 6 and slides with the bottom pressure plate 6, and a spring 11 is sleeved on the guide rod 10 and located below the bottom pressure plate 6.

[0023] In this embodiment, a sliding collar 16 is fixedly provided on one end of the first vertical section 3 and the second vertical section 5 close to the first vertical section 3 . The sliding collar 16 slides with the first vertical section 3 , and the support rod 8 is fixed between the two sliding collars 16 .

[0024] Through the above-mentioned structural design, when the utility model is in use, the device is connected to the output end of the crane through the connecting ear plate 2. When hanging a heavy object, the heavy object presses down the bottom pressure plate 6, the spring 11 is compressed, and the support rod 8 drives the anti-falling cover plate 7 to move down until the upper part of the second vertical section is inserted into the through hole 15, completing the covering of the hook to prevent the heavy object from falling off the hook during the lifting process. When the lifting is completed, the heavy object falls to the ground, and the pressure of the bottom pressure plate 6 disappears. Under the action of the restoring force of the spring 11, the bottom pressure plate 6 and the anti-falling cover plate 7 are lifted up, and the anti-falling cover plate 7 falls off the second vertical section 5, thereby automatically opening the hook, making it convenient for workers to remove materials.

[0025] Example 2

[0026] The lifting device of the present invention is a kind of anti-falling device for a crane, comprising a hook body 1, the upper end of the hook body 1 is fixedly provided with a connecting ear plate 2, the hook body 1 comprises a first vertical section 3, a horizontal section 4 and a second vertical section 5 fixedly connected in sequence, a bottom pressure plate 6 is slidably connected between the first vertical section 3 and the second vertical section 5, the upper part of the first vertical section 3 is slidably connected with an anti-falling cover plate 7, a support rod 8 is fixedly connected between the bottom pressure plate 6 and the anti-falling cover plate 7, the outside of the first vertical section 3 and the upper and lower sides of the bottom pressure plate 6 are fixedly provided with mounting plates 9, the support rod 8 passes through the mounting plate 9 located above the bottom pressure plate 6 and is clearance-matched with the mounting plate 9, the anti-falling cover plate 7 is provided with a through hole 15 for the top of the second vertical section 5 to pass through near the second vertical section 5, a guide rod 10 is fixedly connected between the mounting plates 9, the guide rod 10 passes through the bottom pressure plate 6 and slidably matches with the bottom pressure plate 6, and a spring 11 is sleeved on the guide rod 10 and located below the bottom pressure plate 6. A sliding collar 16 is fixedly provided on one end of the first vertical section 3 and the second vertical section 5 close to the first vertical section 3 . The sliding collar 16 is in sliding engagement with the first vertical section 3 .

[0027] Compared with the first embodiment, in this embodiment, a slider 12 is fixedly provided at one end of the bottom pressure plate 6 close to the second vertical section 5, a slide groove 13 is provided on the inner side surface of the second vertical section 5, and a slide rod 14 is fixed inside the slide groove 13. The slide rod 14 passes through the slider 12 and is slidably connected to the slider 12.

[0028] The above structural design increases the stability of the bottom pressure plate 6. When the bottom pressure plate is subjected to downward pressure or when the pressure is released, the bottom pressure plate is smoothly pressed down or lifted up under the action of the sliding collar 16 and the slider and slide rod.

[0029] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A crane anti-fall device, comprising a hook body (1), wherein a connecting lug (2) is fixedly provided at the upper end of the hook body (1), and the hook body (1) comprises a first vertical section (3), a horizontal section (4) and a second vertical section (5) which are fixedly connected in sequence into one body, characterized in that: A bottom pressure plate (6) is provided in a sliding connection between the first vertical section (3) and the second vertical section (5); an anti-falling cover plate (7) is provided in a sliding connection on the upper part of the first vertical section (3); a support rod (8) is fixedly provided between the bottom pressure plate (6) and the anti-falling cover plate (7); mounting plates (9) are fixedly provided outside the first vertical section (3) and located on both upper and lower sides of the bottom pressure plate (6); a guide rod (10) is fixedly provided between the mounting plates (9); the guide rod (10) passes through the bottom pressure plate (6) and is slidably matched with the bottom pressure plate (6); a spring (11) is sleeved on the guide rod (10) and located below the bottom pressure plate (6).

2. The anti-falling device for a crane according to claim 1, characterized in that: The support rod (8) passes through the mounting plate (9) located above the bottom pressure plate (6) and is clearance-matched with the mounting plate (9).

3. The anti-falling device for a crane according to claim 1, characterized in that: A slider (12) is fixedly provided at one end of the bottom pressure plate (6) close to the second vertical section (5), a slide groove (13) is provided on the inner side surface of the second vertical section (5), a slide rod (14) is fixed inside the slide groove (13), and the slide rod (14) passes through the slider (12) and is slidably connected to the slider (12).

4. The anti-falling device for a crane according to claim 1, characterized in that: A through hole (15) for the top of the second vertical section (5) to pass through is provided at a portion of the anti-falling cover plate (7) close to the second vertical section (5).

5. The anti-falling device for a crane according to claim 1, characterized in that: The first vertical section (3) and the second vertical section (5) are both fixedly provided with a sliding collar (16) at one end close to the first vertical section (3), and the sliding collar (16) is in sliding engagement with the first vertical section (3).

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