Crane hook
By installing scales and mechanical travel switches on the crane hook, the problem of the hook opening degree being unable to be observed at any time was solved, enabling real-time monitoring and alarm of hook deformation, thus improving safety.
Patent Information
- Application Number
- CN202520349301.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-03
AI Technical Summary
In existing technologies, the deformation of the opening of crane hooks cannot be observed at any time and can only be detected through periodic inspections, which poses a safety hazard.
A crane hook with a graduated hook body and a mechanical limit switch was designed. The changes in the hook opening are observed through the graduated scale, and an alarm is triggered when the deformation is severe.
It enables real-time monitoring of hook opening and timely alarm for deformation, improving safety and reducing the risk of safety accidents.
Smart Images
Figure CN223704943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hook technology, specifically a crane hook. Background Technology
[0002] Cranes, as special equipment, play an important role in mechanizing and automating production processes in industrial, transportation, and construction enterprises, reducing heavy manual labor, and improving labor productivity. However, long-term use of crane hooks can cause plastic deformation, especially at dangerous cross-sections. This deformation can seriously affect safety and even cause accidents. In recent years, safety accidents caused by crane hook breakage have occurred frequently. Currently, the industry can only detect the degree of deformation of the hook opening by periodically inspecting it with a measuring ruler, and it is impossible to observe the degree of deformation of the hook opening at any time. Utility Model Content
[0003] The main objective of this invention is to provide a crane hook that solves the problem in the prior art where the deformation of the crane hook opening can only be detected periodically by using a measuring ruler, and the deformation of the hook opening cannot be observed at any time.
[0004] To achieve the above objectives, this utility model provides a crane hook, including a connecting frame and a hook body mounted on the connecting frame; one end of the hook body is hinged to a locking plate, and a torsion spring is provided on the inner side of the locking plate to provide an outward rotational force for the locking plate; the other end of the locking plate abuts against the hook body; and a scale is provided on the front side of the hook body near the abutment point of the locking plate.
[0005] Furthermore, a mechanical limit switch is fixedly connected to the connecting frame, and the mechanical limit switch is equipped with a drive rod located above the locking plate; the mechanical limit switch is electrically connected to an alarm.
[0006] Furthermore, a roller is rotatably connected to the end of the drive rod.
[0007] Furthermore, the upper part of the hook body is rotatably connected to the connecting frame, and a limit nut is fixedly connected to the top of the hook body.
[0008] This invention allows for the observation of the locking plate's contact position at any time by setting a scale; the change in the locking plate's contact position reflects the change in the opening degree of the crane hook; when the hook deformation causes the hook opening degree to increase, this can be directly observed by looking at the locking plate's contact position.
[0009] This invention incorporates a mechanical limit switch, which, when the locking plate rotates to a certain position, touches the mechanical limit switch drive rod. The mechanical limit switch then sends a signal to the alarm, which sounds an alarm to alert workers that the hook opening is too large, the hook is severely deformed, and needs to be replaced. Attached Figure Description
[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0011] Figure 1 This is a schematic diagram of the crane hook structure in the embodiment;
[0012] In the diagram: 1. Hook body; 2. Connecting frame; 3. Locking plate; 4. Torsion spring; 5. Scale; 6. Mechanical limit switch; 601. Drive rod; 602. Roller; 7. Alarm; 8. Limit nut. Detailed Implementation
[0013] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0014] like Figure 1 As shown, according to an embodiment of the present invention, a crane hook is provided, including a connecting frame 2 and a hook body 1 disposed on the connecting frame 2; one end of a locking plate 3 is hinged to the hook body 1, and a torsion spring 4 is provided on the inner side of the locking plate 3 to provide an outward rotational elastic force for the locking plate 3; the other end of the locking plate 3 abuts against the hook body 1; a scale 5 is provided on the front side of the hook body 1 near the abutment position of the locking plate 3.
[0015] The upper part of the hook body 1 is rotatably connected to the connecting frame 2, and the top of the hook body 1 is fixedly connected to the limit nut 8.
[0016] In some embodiments, a mechanical limit switch 6 is fixedly connected to the connecting frame 2, and a drive rod 601 is provided on the mechanical limit switch 6, which is located above the locking plate 3; an alarm 7 is electrically connected to the mechanical limit switch 6; and a roller 602 is rotatably connected to the end of the drive rod 601.
[0017] During the transportation of goods, the hook body 1 will rotate. In the initial state, when the hook body 1 rotates, the locking plate 3 will not touch the drive rod 601. After the hook body 1 has been used for a period of time, the opening gradually increases, and the locking plate 3 gradually rotates outward. When the hook body 1 is deformed to a certain extent, that is, when the locking plate 3 also rotates outward to a certain extent, the hook body 1 will touch the drive rod 601 of the mechanical limit switch 6. The mechanical limit switch 6 sends a signal to the alarm 7, and the alarm 7 sounds an alarm, reminding the staff that the hook opening is too large, the hook is severely deformed, and needs to be replaced.
[0018] The above embodiment allows for the observation of the contact position of the locking plate 3 at any time by setting the scale 5; the change in the contact position of the locking plate 3 reflects the change in the opening degree of the crane hook; when the hook deformation causes the hook opening degree to increase, this can be directly observed by looking at the contact position of the locking plate 3.
[0019] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A crane hook comprising a connection bracket (2), a hook body (1) arranged on the connection bracket (2); characterized in that, One end of the hook body (1) is hingedly connected with a lock piece (3), the inner side of the lock piece (3) is provided with a torsion spring (4) for providing the lock piece (3) with an outward rotating elastic force, the other end of the lock piece (3) is in abutment with the hook body (1); the front side of the hook body (1) is provided with a scale (5) at a position close to the abutment position of the lock piece (3).
2. A crane hook as claimed in claim 1, characterised in that A mechanical travel switch (6) is fixedly connected to the connecting frame (2), the mechanical travel switch (6) is provided with a driving rod (601), and the driving rod (601) is located above the lock piece (3); the mechanical travel switch (6) is electrically connected with an alarm (7).
3. A crane hook as claimed in claim 2, characterised in that The end of the driving rod (601) is rotatably connected with a roller (602).
4. A crane hook as claimed in claim 1, characterised in that The upper part of the hook body (1) is rotatably connected with the connecting frame (2), and the top of the hook body (1) is fixedly connected with a limiting nut (8).