Mechanical rotation locking mechanism for a lifting hook

Abstract

The present application belongs to the technical field of hooks, and specifically discloses a mechanical rotary locking mechanism of a hook, which comprises a hook, a recess is formed in one end of the hook, a bearing is sleeved in the recess, a locking hook is fixedly connected to the top surface of the bearing, and characterized in that a rotary locking assembly is arranged on the side surface of the hook and the locking hook, the rotary locking assembly comprises a rotary plate fixedly connected to one side of the bottom end of the locking hook and a fixed plate fixedly connected to the side surface of the hook, a sleeve hole is formed in the top surface of the fixed plate, a spring is sleeved in the sleeve hole, and a limiting bean is fixedly connected to the top end of the spring; through the arrangement of the locking hook connected by the bearing and the rotary locking assembly, the cooperation of the pressable limiting bean and the spring makes the locking hook be automatically clamped into the limiting hole of the rotary plate for locking after the locking hook is rotated to close the open end of the hook, the risk that the rope is pulled out of the opening of the hook in the hoisting process is effectively prevented, and the operation safety is improved.

Description

Technical Field

[0001] This invention belongs to the field of hook technology, and specifically relates to a mechanical rotating locking mechanism for hooks. Background Technology

[0002] As a key component of lifting equipment, the hook is widely used in various loading, unloading, and handling operations. However, ordinary hooks currently have several problems: the hook itself may not be strong enough to ensure lifting operations.

[0003] In the prior art, such as in publication number CN208994970U, a lifting hook is disclosed, comprising: a hook body for hooking a heavy object for lifting; and an angle over-limit alarm device installed on the hook body, which issues an alarm when the angle between the hook body and the vertical direction is greater than or equal to a first threshold. The lifting hook of this invention can detect the lifting status of the heavy object in real time to prevent safety accidents.

[0004] While the aforementioned patent uses verticality detection to monitor hook deformation and determine if an object is overweight, it lacks a structure to seal the open end of the hook. The rope suspending the goods may sway with the goods, posing a risk of falling off the hook. Furthermore, using hook verticality deformation to determine weight is impractical, as the hook itself is rigid and large, making it difficult to deform and resulting in insufficient accuracy in weight monitoring. Therefore, a mechanical rotating locking mechanism for the hook is proposed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a mechanical rotating locking mechanism for hooks.

[0006] To achieve the above objectives, the present invention provides a mechanical rotating locking mechanism for a hook, comprising a hook, one end of which has a groove, a bearing is sleeved inside the groove, and a locking hook is fixedly connected to the top surface of the bearing. The hook and the locking hook are characterized in that rotating locking components are provided on the sides of the hook and the locking hook, and a monitoring component is fixedly connected to the bottom end of the hook. The rotating locking assembly includes a rotating plate fixedly connected to one side of the bottom end of the hook and a fixed plate fixedly connected to one side of the hook. The top surface of the fixed plate has a sleeve hole, and a spring is sleeved inside the sleeve hole. A limit bead is fixedly connected to the top of the spring, and a limit hole that matches the limit bead is opened on the top surface of the rotating plate. The monitoring component includes a support plate fixedly connected to the top surface of the bottom end of the hook. A fixing groove is formed on the top surface of the support plate, and a rubber sleeve is fixedly connected inside the fixing groove. A pressure sensor assembly is sleeved inside the rubber sleeve. A device box extending through to the bottom surface of the hook is fixedly connected to the bottom surface of the support plate. A control board is sleeved inside the device box, and an alarm light is fixedly connected to the bottom surface of the device box. In the above technical solution, the limiting bead is further operable to be inserted into the limiting hole of the rotating plate under the elastic force of the spring, thereby locking the locking hook in the position of the closed hook open end.

[0007] In the above technical solution, the control board is further connected to the pressure sensor group and the alarm light, and the control board is configured to control the alarm light to sound an alarm when the pressure value detected by the pressure sensor group exceeds a preset threshold.

[0008] In the above technical solution, the bearing further allows the locking hook to rotate relative to the hook to achieve locking and unlocking operations.

[0009] In the above technical solution, the spring is further defined as a compression spring.

[0010] In the above technical solution, the alarm light is further described as an audible and visual alarm.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, by setting a locking hook connected by a bearing and a rotating locking assembly, utilizes the cooperation of a pressable limiting bead and a spring to allow the locking hook to be automatically locked into the limiting hole of the rotating plate after the open end of the hook is rotated and closed, effectively preventing the risk of the rope coming out of the hook opening during hoisting and improving operational safety. 2. This utility model uses a monitoring component installed at the load-bearing position at the bottom of the hook to directly sense the pressure transmitted by the rope by using a pressure sensor group built into the rubber bag on the support plate. The weight signal is processed in real time by the control board. When the weight is overloaded, the alarm light is triggered immediately, realizing direct and accurate monitoring of the weight of the hoisted load. This overcomes the problems of large errors and insensitivity caused by relying on detecting the deformation of the hook to indirectly judge the weight. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the monitoring component structure of this utility model; Figure 3 This is a schematic diagram of the rotary locking assembly structure of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0013] In the diagram: 1. Hook; 2. Bearing; 3. Locking hook; 4. Rotary locking assembly; 41. Rotating plate; 42. Fixing plate; 43. Spring; 44. Limit bead; 5. Monitoring assembly; 51. Support plate; 52. Rubber sleeve; 53. Pressure sensor group; 54. Equipment box; 55. Control board; 56. Alarm light. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1-4 The mechanical rotating locking mechanism of the hook shown includes a hook 1, one end of the hook 1 has a groove, a bearing 2 is sleeved inside the groove, and a locking hook 3 is fixedly connected to the top surface of the bearing 2. The hook 1 and the locking hook 3 are provided with rotating locking components 4 on their sides, and a monitoring component 5 is fixedly connected to the bottom end of the hook 1. The rotating locking assembly 4 includes a rotating plate 41 fixedly connected to one side of the bottom end of the hook 3 and a fixed plate 42 fixedly connected to one side of the hook 1. The top surface of the fixed plate 42 is provided with a sleeve hole, and a spring 43 is sleeved inside the sleeve hole. The top end of the spring 43 is fixedly connected with a limit bead 44. The top surface of the rotating plate 41 is provided with a limit hole that matches the limit bead 44. During operation, when hoisting is required, the operator inserts the carrying rope into the hook 1 and presses down on the limiting bead 44 located in the sleeve hole of the fixed plate 42. This compresses the spring 43 and causes it to slide completely into the sleeve hole, thereby releasing the constraint on the rotating plate 41. At this time, the locking hook 3 can be rotated. The locking hook 3 rotates relative to the hook 1 through the bearing 2 until its hook body closes the open end of the hook 1. When the locking hook 3 is rotated into position, the limiting hole on the rotating plate 41 on its side moves exactly above the limiting bead 44. The compressed spring 43 rebounds, driving the limiting bead 44 to pop up and lock into the limiting hole, thereby completing the mechanical rotation locking of the locking hook 3 and effectively preventing the rope from accidentally coming out of the opening of the hook 1 during operation.

[0016] Furthermore, the monitoring component 5 includes a support plate 51 fixedly connected to the top surface of the bottom end of the hook 1. A fixing groove is provided on the top surface of the support plate 51. A rubber sleeve 52 is fixedly connected inside the fixing groove. A pressure sensor group 53 is sleeved inside the rubber sleeve 52. An equipment box 54 extending through to the bottom surface of the hook 1 is fixedly connected to the bottom surface of the support plate 51. A control board 55 is sleeved inside the equipment box 54. An alarm light 56 ​​is fixedly connected to the bottom surface of the equipment box 54. During operation, the suspended rope presses directly onto the support plate 51 of the monitoring component 5. The rubber sleeve 52 in the fixing groove of the support plate 51 and the pressure sensor group 53 inside it directly bear the pressure transmitted by the rope. The pressure signal detected by the pressure sensor group 53 in real time is transmitted to the control board 55 in the equipment box 54. The control board 55 converts the pressure value into the current suspended weight and compares it with the preset safety threshold. Once the suspended weight exceeds the safety threshold, the control board 55 immediately triggers the alarm light 56 ​​on the bottom of the equipment box 54 to emit an audible and visual alarm, thereby realizing direct and accurate monitoring of the suspended weight and overload warning.

[0017] Furthermore, spring 43 is a compression spring; During operation, when the limit bead 44 is pressed, the compression spring is directly compressed and stores energy. When the limit hole of the rotating plate 41 rotates above the limit bead 44, the compression spring uses its restoring deformation force to accurately and quickly push the limit bead 44 into the limit hole to complete the locking. The implementation method of using a compression spring provides a stable and unidirectional linear elastic force, ensuring the reliability and durability of the engagement and disengagement action between the limit bead 44 and the limit hole. At the same time, the compression spring has a simple structure, low cost and is easy to replace, effectively ensuring the performance stability of the core drive component of the rotary locking assembly 4.

[0018] Furthermore, alarm light 56 ​​is an audible and visual alarm; During operation, when the control board 55 determines that the weight data detected by the pressure sensor group 53 exceeds the preset threshold, the control board 55 immediately sends an electrical signal to the audible and visual alarm, triggering it to emit a high-frequency sound and flashing light simultaneously as an alarm. The implementation of the audible and visual alarm combines auditory and visual warning signals, which can provide a more significant and three-dimensional warning effect in noisy or poorly lit industrial environments, greatly improving the perception of overload alarms, thereby promptly reminding operators to take countermeasures and effectively avoiding potential safety accidents caused by a single alarm mode that may be ignored.

[0019] Working principle: The operator first presses the limiting bead 44 of the rotary locking assembly 4 to compress the spring 43 and retract it into the sleeve hole of the fixed plate 42, thereby releasing the constraint on the rotary plate 41 fixedly connected to the hook 3; then, the hook 3 is rotated through the bearing 2 to open the open end of the hook 1 so that the carrying rope can be hung inside the hook 1; after the rope is hung, the hook 3 is rotated again to close the open end of the hook 1. When the limiting hole on the rotary plate 41 rotates to directly above the limiting bead 44, the spring 43 rebounds and pushes the limiting bead 44 upward into the limiting hole, thereby completing the mechanical locking of the hook 3. Meanwhile, the rope suspended inside the hook 1 presses down on the support plate 51 of the monitoring component 5, and the pressure is directly transmitted to the internal pressure sensor group 53 through the rubber sleeve 52. The pressure sensor group 53 transmits the pressure signal detected in real time to the control board 55 in the equipment box 54, where the control board 55 processes the data and compares it with a preset safe weight threshold. Once an overload condition is detected, the control board 55 immediately triggers the alarm light 56 ​​to issue an audible and visual alarm, thereby realizing the dual safety functions of mechanical locking of the hook in the closed state and real-time monitoring of the suspended weight and over-limit alarm.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A mechanical rotating locking mechanism for a lifting hook, characterized in that: The device includes a hook (1), one end of which has a groove, a bearing (2) is sleeved inside the groove, and a locking hook (3) is fixedly connected to the top surface of the bearing (2). The device is characterized in that a rotating locking assembly (4) is provided on the sides of the hook (1) and the locking hook (3), and a monitoring assembly (5) is fixedly connected to the bottom end of the hook (1). The rotating locking assembly (4) includes a rotating plate (41) fixedly connected to one side of the bottom end of the hook (3) and a fixed plate (42) fixedly connected to one side of the hook (1). The top surface of the fixed plate (42) is provided with a sleeve hole, and a spring (43) is sleeved inside the sleeve hole. The top end of the spring (43) is fixedly connected with a limit bead (44). The top surface of the rotating plate (41) is provided with a limit hole that matches the limit bead (44). The monitoring component (5) includes a support plate (51) fixedly connected to the top surface of the bottom end of the hook (1). A fixing groove is provided on the top surface of the support plate (51). A rubber sleeve (52) is fixedly connected inside the fixing groove. A pressure sensor group (53) is sleeved inside the rubber sleeve (52). An equipment box (54) extending through to the bottom surface of the hook (1) is fixedly connected to the bottom surface of the support plate (51). A control board (55) is sleeved inside the equipment box (54). An alarm light (56) is fixedly connected to the bottom surface of the equipment box (54).

2. The mechanical rotary locking mechanism for a hook according to claim 1, characterized in that: The limiting bead (44) is operable to be inserted into the limiting hole of the rotating plate (41) under the elastic force of the spring (43), thereby locking the locking hook (3) in the position of the open end of the closed hook (1).

3. The mechanical rotary locking mechanism for a hook according to claim 1, characterized in that: The control board (55) is electrically connected to the pressure sensor group (53) and the alarm light (56). The control board (55) is configured to control the alarm light (56) to issue an alarm when the pressure value detected by the pressure sensor group (53) exceeds a preset threshold.

4. The mechanical rotary locking mechanism for a hook according to claim 1, characterized in that: The bearing (2) allows the locking hook (3) to rotate relative to the hook (1) to achieve locking and unlocking operations.

5. The mechanical rotary locking mechanism for a hook according to claim 1, characterized in that: The spring (43) is a compression spring.

6. The mechanical rotary locking mechanism for a hook according to claim 1, characterized in that: The alarm light (56) is an audible and visual alarm.

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