Alarm type anti-drop hook
By installing an alarm system with a power supply, pressure switch, alarm light, and buzzer on the hook, the problem of existing hooks being unable to detect when the anti-derailment barrier is in place is solved, realizing a safety alarm reminder for the hook and improving the safety of hook use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN YUGUANG ALLOY CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-06-12
AI Technical Summary
The existing hooks cannot detect in a timely manner whether the anti-derailment frame is properly sealing the hook opening, and lack alarm reminder functions, resulting in safety hazards.
Design an alarm-type anti-detachment hook, equipped with an alarm system including a power supply, a pressure switch, an alarm light, and a buzzer. The pressure switch detects whether the anti-detachment frame is blocking the hook opening; if it is not properly blocked, an alarm is triggered to alert the staff.
It enables real-time detection and alarm of the anti-derailment shield's sealing status, improving the safety of hook use and ensuring that the anti-derailment shield promptly alerts staff during hook lifting.
Smart Images
Figure CN224350243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting hook equipment technology, specifically to an alarm-type anti-detachment lifting hook. Background Technology
[0002] Hooks are typically made of steel or other metal materials and have a certain load-bearing capacity and durability. Hooks are common tools in lifting machinery. They are suspended from the wire rope of the lifting machinery by means of pulley blocks and other components. They are mainly used for lifting and moving heavy objects and are widely used in industrial hoisting, heavy equipment handling and other scenarios. Usually, the object to be moved is connected to the hook, and then the lifting equipment is used to lift the object off the ground and transport it to the destination.
[0003] Currently, anti-detachment frames are typically installed on lifting hooks to seal the hook opening and prevent the lifting ring inside the hook from detaching. The anti-detachment frame serves as a safety protection mechanism, with its anti-detachment end forming a closed loop with the hook opening to ensure that the hook can safely and reliably complete the lifting and protection action. Although existing hooks have anti-detachment functions, they cannot detect whether the anti-detachment frame is properly sealing the hook opening. When the hook is lifting a heavy object for transportation, if the anti-detachment frame fails to properly seal the hook opening, it cannot promptly alarm and remind the workers. Summary of the Invention
[0004] This invention addresses the problem that existing lifting hooks cannot detect whether the anti-detachment frame is properly sealing the hook opening. It provides an alarm-type anti-detachment hook that not only has an anti-detachment function but also detects whether the anti-detachment frame is properly sealing the hook opening, providing an auxiliary alarm function. If the anti-detachment frame is not properly sealing the hook opening, it can promptly alert workers, improving safety performance.
[0005] To achieve the above objectives, the technical solution of this utility model is: an alarm-type anti-detachment hook, comprising a hook body, with an anti-detachment frame rotatably mounted on the upper end of the hook body. The anti-detachment frame includes an anti-detachment end and a counterweight end connected to the anti-detachment end, with the anti-detachment end and the counterweight end located on the inner and outer sides of the hook body, respectively. The anti-detachment end serves to seal the opening of the hook body, while the counterweight end acts as a counterweight. Due to gravity, the counterweight end droops, causing the anti-detachment end to lift and seal the opening of the hook body, thereby achieving the anti-detachment effect.
[0006] The anti-derailment frame is equipped with an alarm system, which includes a power supply, a pressure switch, an alarm light, a buzzer, and wiring. The power supply, pressure switch, alarm light, and buzzer are connected sequentially via wiring to form a circuit. The alarm system detects whether the anti-derailment frame is properly sealing the opening of the hook body. If the anti-derailment frame is not properly sealing the opening of the hook body, the alarm light and buzzer will sound to alert the personnel. The power supply provides power to the alarm light and buzzer.
[0007] The pressure switch is located at the lower end of the anti-detachment end, facing the inside of the hook body. A housing is located at the lower end of the counterweight end, and the power supply is located inside the housing. The alarm light and buzzer are both located at the top of the housing. When the anti-detachment end tilts up due to the weight of the counterweight end, the pressure switch contacts the inside of the hook body and is under pressure. At this time, the alarm light and buzzer do not sound. However, when the anti-detachment end fails to properly seal the opening of the hook body, the pressure switch is not in contact with the inside of the hook body and is in an unpressurized state. At this time, the alarm light and buzzer sound.
[0008] Furthermore, an ear block is provided on the inner side of the upper end of the hook body, and a shaft hole is opened on the ear block. A fixed shaft is fixedly installed in the shaft hole, and both ends of the fixed shaft extend to the outside of the shaft hole. The ear block provides an installation position for the fixed shaft, so as to facilitate the connection between the fixed shaft and the anti-slip bracket.
[0009] Furthermore, the anti-detachment frame has an overall "V" shape structure, and both the anti-detachment end and the counterweight end have a "U" shape structure. The length of the counterweight end is greater than the length of the anti-detachment end. The purpose of this is to ensure that the counterweight end can play a counterweight role for the anti-detachment end, so that the anti-detachment end can be lifted up to block the opening of the hook body under the action of the counterweight end.
[0010] Furthermore, a rotating cylinder is fixedly installed at each of the two corners of the anti-detachment frame. The rotating cylinder is rotatably sleeved at the end of the fixed shaft, and the anti-detachment frame can rotate through the cooperation between the rotating cylinder and the fixed shaft.
[0011] Furthermore, the pressure switch is located at the middle position of the horizontal part of the anti-detachment end. The pressure switch is a mechanical normally closed pressure switch. When there is no pressure, the circuit is open, and when pressure is applied, the circuit is closed.
[0012] Furthermore, a fixing cylinder is fixedly sleeved on the horizontal part of the counterweight end, and an installation plate is connected to the outside of the fixing cylinder. The housing is detachably mounted on the top of the installation plate. The installation plate provides an installation position for the housing to facilitate the installation of power supply, alarm light and buzzer, and also serves as a counterweight to further ensure that the anti-detachment end can be tilted up to seal the opening of the hook body under the action of the counterweight end.
[0013] Furthermore, the anti-detachment frame is composed of a hollow tubular structure. A wire-passing hole is provided at the midpoint of the horizontal portion of both the anti-detachment end and the counterweight end. An opening corresponding to the wire-passing hole is provided on the fixing cylinder. The wire-passing hole and opening facilitate the connection of the pressure switch's wires to the power supply through the anti-detachment frame, preventing the wires from being exposed externally.
[0014] The beneficial effects of this utility model through the above technical solution are as follows:
[0015] This utility model has a reasonable structure and good performance. It not only has the function of preventing detachment, but also can detect whether the anti-detachment frame is properly sealing the opening of the hook. It has an auxiliary alarm function. If the anti-detachment frame is not properly sealing the opening of the hook, it can promptly alarm and remind the staff, thereby improving safety performance.
[0016] The anti-detachment end of this utility model's anti-detachment frame seals the opening of the hook body, while the counterweight end acts as a counterweight. Due to gravity, the counterweight end hangs down on the outside of the hook body. Because the anti-detachment frame is rotatably connected to the upper end of the hook body, the anti-detachment end can be lifted up under the action of the counterweight end to seal the opening of the hook body, thereby achieving the effect of preventing the lifting ring inside the hook body from detaching. The power supply, alarm light, and buzzer of the alarm system are installed at the lower end of the counterweight end, which can further ensure that the anti-detachment end can be lifted up under the action of the counterweight end to seal the opening of the hook body.
[0017] The alarm system of this utility model consists of a power supply, a pressure switch, an alarm light, and a buzzer forming a circuit. By checking whether the pressure switch is in pressure contact with the hook body, it detects whether the anti-derailment frame is properly sealing the opening of the hook body and provides an auxiliary alarm. If the anti-derailment frame is not properly sealing the opening of the hook body, the alarm light and buzzer will sound an alarm to remind the staff. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an alarm-type anti-detachment hook according to this utility model. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of an alarm-type anti-detachment hook according to this utility model. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the structure of an alarm-type anti-detachment hook according to this utility model. Figure 3 ;
[0021] Figure 4 This is a schematic diagram of the structure of the hook body of this utility model. Figure 1 ;
[0022] Figure 5 This is a schematic diagram of the structure of the hook body of this utility model. Figure 2 ;
[0023] Figure 6 yes Figure 1 A magnified structural diagram of point A in the middle.
[0024] The attached diagram is labeled as follows: 1 is the hook body, 2 is the lug, 3 is the shaft hole, 4 is the fixed shaft, 5 is the anti-detachment frame, 501 is the anti-detachment end, 502 is the counterweight end, 6 is the rotating cylinder, 7 is the pressure switch, 8 is the wire, 9 is the fixed cylinder, 10 is the opening, 11 is the mounting plate, 12 is the housing, 13 is the alarm light, and 14 is the buzzer. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0026] like Figures 1-6 As shown, an alarm-type anti-detachment hook includes a hook body 1. An anti-detachment frame 5 is rotatably mounted on the upper end of the hook body 1. The anti-detachment frame 5 includes an anti-detachment end 501 and a counterweight end 502 connected to the anti-detachment end 501. The anti-detachment end 501 and the counterweight end 502 are located on the inner and outer sides of the hook body 1, respectively. In this embodiment, the anti-detachment frame 5 has a V-shaped frame structure. The counterweight end 502 acts as a counterweight to the anti-detachment end 501. Since the anti-detachment frame 5 is rotatably connected to the hook body 1, the counterweight end 502 will droop due to its own weight, causing the anti-detachment end 501 to tilt upwards under the action of the counterweight end 502. At the same time, the inner side of the hook body 1 blocks the anti-detachment end 501, and the anti-detachment end 501 seals the opening of the hook body, thereby achieving the effect of the anti-detachment frame 5 preventing the inner ring of the hook body 1 from detaching.
[0027] The anti-detachment frame 5 is equipped with an alarm system, which includes a power supply, a pressure switch 7, an alarm light 13, a buzzer 14, and a wire 8. The power supply, pressure switch 7, alarm light 13, and buzzer 14 are sequentially connected via the wire 8 to form a circuit. In this embodiment, the alarm system is used to detect whether the anti-detachment frame has properly sealed the opening of the hook body. The power supply provides power to the alarm light 13 and the buzzer 14. The pressure switch 7 acts as a switch to determine whether the circuit is conducting. Specifically, when the anti-detachment frame 5 has not properly sealed the opening of the hook body, the alarm light 13 and the buzzer 14 simultaneously activate to sound an alarm.
[0028] The pressure switch 7 is located at the lower end of the anti-detachment end 501 and faces the inner side of the hook body 1. A housing 12 is located at the lower end of the counterweight end 502. The power supply is located inside the housing 12, and the alarm light 13 and buzzer 14 are both located at the top of the housing 12. In this embodiment, the housing 12 provides an installation position for the power supply, which is a battery. The battery is fixed inside the housing 12 using a slide rail and clips, allowing for battery replacement. A channel for battery replacement is provided on the housing 12. When the anti-detachment end 501 is tilted up due to the gravity of the counterweight end 502, and the pressure switch 7 is in contact with the inner side of the hook body 1 under pressure, the alarm light 13 and buzzer 14 are in a dormant state and do not sound an alarm. Then, when the pressure switch 7 is not in contact with the inner side of the hook body 1 and is in an unpressurized state, the alarm light 13 and buzzer 14 sound an alarm to alert the operator.
[0029] The hook body 1 has an ear block 2 on its upper inner side, and a shaft hole 3 is formed on the ear block 2. A fixed shaft 4 is fixedly installed in the shaft hole 3, and both ends of the fixed shaft 4 extend to the outside of the shaft hole 3. In this embodiment, the ear block 2 is welded and fixed to the upper inner side of the hook body 1. The ear block 2 provides an installation position for the fixed shaft 4, which is used to connect with the anti-detachment frame 5 so that the anti-detachment frame 5 can rotate.
[0030] The anti-detachment frame 5 has an overall "V" shape structure, and the anti-detachment end 501 and the counterweight end 502 both have a "U" shape structure. The length of the counterweight end 502 is greater than the length of the anti-detachment end 501, ensuring that the counterweight end 502 can play a counterweight role for the anti-detachment end 501, so that the anti-detachment end 501 can be lifted up to block the opening of the hook body 1 under the action of the counterweight end 502.
[0031] Rotating cylinders 6 are fixedly installed at both corners of the anti-detachment frame 5, and the rotating cylinders 6 are rotatably sleeved on the end of the fixed shaft 4. In this embodiment, the rotating cylinders 6 are welded and fixed at the connection between the anti-detachment end 501 and the counterweight end 502, so that the anti-detachment frame 5 can rotate around the upper end of the hook body 1 under the action of the rotating cylinders 6.
[0032] The pressure switch 7 is located at the middle position of the horizontal part of the anti-detachment end 501. The pressure switch 7 is a mechanical normally closed pressure switch. In this embodiment, the pressure switch 7 adopts a Honeywell SD series mechanical normally closed pressure switch, which has the advantages of high pressure resistance and impact resistance. The circuit is open when there is no pressure and the circuit is closed when pressure is applied.
[0033] A fixing cylinder 9 is fixedly sleeved on the horizontal part of the counterweight end 502. An mounting plate 11 is connected to the outside of the fixing cylinder 9. The housing 12 is detachably mounted on the top of the mounting plate 11. In this embodiment, the fixing cylinder 9 is used to connect the mounting plate 11, which provides an installation position for the housing 12 to facilitate the installation of the power supply, alarm light 13, and buzzer 14. At the same time, the power supply, alarm light 13, and buzzer 14 also serve as counterweights to ensure that the anti-detachment end 501 can be tilted up to seal the opening of the hook body 1.
[0034] The anti-detachment frame 5 is composed of a hollow tubular structure, which provides a wiring channel for the wire 8. A wire-passing hole is provided at the midpoint of the horizontal portion of both the anti-detachment end 501 and the counterweight end 502. An opening 10 corresponding to the wire-passing hole is provided on the fixing cylinder 9. In this embodiment, the wire-passing holes on the horizontal portions of the anti-detachment end 501 and the counterweight end 502 facilitate the wire 8 connected to the pressure switch 7 to pass through the anti-detachment frame 5 and connect to the power supply. The opening 10 allows the wire 8 to pass through the fixing cylinder 9 and connect to the power supply.
[0035] The working principle of this utility model is as follows: When lifting and moving heavy objects through the hook body 1, the lifting ring needs to be hung on the hook body 1. The operator rotates the counterweight end 502 of the anti-detachment frame 5 upwards. The anti-detachment frame 5 rotates around the fixed shaft 4 through the rotating cylinder 6. The anti-detachment end 501 of the anti-detachment frame 5 rotates downwards to open the opening of the hook body 1. At this time, the pressure switch 7 is not in contact with the inner side of the hook body 1 and is in an unpressurized state. The alarm light 13 and the buzzer 14 work to sound an alarm. Then, the lifting ring is hung on the hook body 1, and the operator releases the counterweight end of the anti-detachment frame 5. The counterweight end 502 hangs down and rotates downward due to its own weight, while the anti-detachment end 501 rotates upward and tilts up to block the opening of the hook body 1. If the alarm light 13 and the buzzer 14 do not stop alarming, the pressure switch 7 is not in contact with the inside of the hook body 1 and is in an unpressurized state, the circuit is in a conductive state, and the anti-detachment end 501 does not block the opening of the hook body 1. If the alarm light 13 and the buzzer 14 stop alarming, the pressure switch 7 is in contact with the inside of the hook body 1 and is in a pressurized state, the circuit is in a disconnected state, and the anti-detachment end 501 blocks the opening of the hook body 1.
[0036] If the alarm light 13 and buzzer 14 sound an alarm during the lifting and moving of heavy objects, it will remind the staff that the anti-detachment end 501 has not sealed the opening of the hook body 1, and they should take precautions.
[0037] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.
Claims
1. An alarm-type anti-detachment hook, comprising a hook body (1), characterized in that, The upper end of the hook body (1) is rotatably provided with an anti-detachment frame (5). The anti-detachment frame (5) includes an anti-detachment end (501) and a counterweight end (502) connected to the anti-detachment end (501). The anti-detachment end (501) and the counterweight end (502) are located on the inner and outer sides of the hook body (1), respectively. An alarm system is provided on the anti-detachment frame (5). The alarm system includes a power supply, a pressure switch (7), an alarm light (13), a buzzer (14), and a wire (8). The power supply, pressure switch (7), alarm light (13), and buzzer (14) are connected in sequence through the wire (8) to form a circuit. The pressure switch (7) is located at the lower end of the anti-detachment end (501) and faces the inside of the hook body (1). The lower end of the counterweight end (502) is provided with a housing (12). The power supply is located inside the housing (12). The alarm light (13) and the buzzer (14) are both located at the top of the housing (12).
2. The alarm-type anti-detachment hook according to claim 1, characterized in that, The upper inner side of the hook body (1) is provided with an ear block (2), and the ear block (2) is provided with a shaft hole (3). A fixed shaft (4) is fixedly provided in the shaft hole (3), and both ends of the fixed shaft (4) extend to the outside of the shaft hole (3).
3. The alarm-type anti-detachment hook according to claim 2, characterized in that, The anti-detachment frame (5) has an overall "V" shape structure. The anti-detachment end (501) and the counterweight end (502) both have a "U" shape structure. The length of the counterweight end (502) is greater than the length of the anti-detachment end (501).
4. The alarm-type anti-detachment hook according to claim 3, characterized in that, Rotating cylinders (6) are fixedly installed at both corners of the anti-detachment frame (5), and the rotating cylinders (6) are rotatably sleeved at the end of the fixed shaft (4).
5. The alarm-type anti-detachment hook according to claim 1, characterized in that, The pressure switch (7) is located at the middle position of the horizontal part of the anti-detachment end (501), and the pressure switch (7) is a mechanical normally closed pressure switch.
6. The alarm-type anti-detachment hook according to claim 5, characterized in that, The horizontal part of the counterweight end (502) is fixedly fitted with a fixing cylinder (9), and the outside of the fixing cylinder (9) is connected to a mounting plate (11). The housing (12) is detachably mounted on the top of the mounting plate (11).
7. An alarm-type anti-detachment hook according to claim 6, characterized in that, The anti-detachment frame (5) is composed of a hollow tubular structure. A wire hole is provided at the middle position of the horizontal part of the anti-detachment end (501) and the counterweight end (502). An opening (10) corresponding to the wire hole is provided on the fixing cylinder (9).