Special alarm device and safety monitoring system for tower crane main hook

Abstract

This utility model discloses a dedicated alarm device and safety monitoring system for the main hook of a tower crane, relating to the field of construction machinery safety. The device includes a housing, battery, circuit board, horn, indicator lights, MCU, wireless communication module, and photosensitive sensor. The housing is made of metal and covered with a waterproof adhesive layer, with an adsorption structure at the bottom for easy installation and fixation, and is equipped with a fall-prevention safety rope. The MCU controls the horn and indicator lights to provide audible and visual alarms based on instructions received from the wireless communication module or its built-in program. It can also detect ambient light intensity through the photosensitive sensor and automatically adjust the brightness, color, and flashing frequency of the indicator lights to achieve adaptive warning. This utility model also relates to a safety monitoring system that includes the aforementioned alarm device and a main unit in the operator's cab, realizing remote two-way wireless linkage alarm between the operator's cab and the hook's working point. This effectively solves the problems of large blind spots and poor warning effects in tower crane operations, significantly improving construction safety.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery safety protection technology, and more specifically to a special alarm device for the main hook of a tower crane. Background Technology

[0002] Tower cranes are critical equipment on construction sites. Their main hooks have a wide lifting range and large blind spots, posing significant safety risks. Traditional main hook alarm systems rely heavily on audible and visual alerts from the operator's cab or whistles and flag signals from ground control personnel. These methods have significant limitations: alarms from the operator's cab are difficult to effectively transmit to the work area below the hook, while ground control is easily affected by environmental noise, obstructed vision, and operator fatigue, resulting in low reliability. Especially in low-light conditions (such as at night or dusk) or in adverse weather, visual warnings are greatly reduced, increasing the risk of accidents.

[0003] Currently, although some alarm devices are installed on the hook, they generally suffer from problems such as inconvenient installation, poor waterproof and shockproof performance, limited functionality, and inability to be linked with the operator's cab. Therefore, there is an urgent need for a dedicated alarm device that is securely installed, adaptable to harsh working conditions, has a significant warning effect, and can wirelessly link with the crane's control system to improve the overall safety of tower crane operations. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing safety monitoring of the main hook area of ​​tower cranes, and to provide a special alarm device for the main hook of tower cranes that is easy to install, has a good warning effect, and is highly intelligent.

[0005] The technical solution adopted in this utility model is as follows:

[0006] On one hand, a special alarm device for the main hook of a tower crane includes a housing, a battery, a circuit board, a horn, an indicator light, an MCU, a wireless communication module, a photosensitive sensor, a charging interface, and a power switch; the battery is electrically connected to the circuit board and supplies power to the entire device; the MCU is mounted on the circuit board and controls the horn and indicator light to provide audible and visual alarms; the wireless communication module is connected to the MCU to receive wireless alarm commands from the outside; the photosensitive sensor is connected to the MCU; the charging interface is connected to the battery; and the power switch controls the power supply to and from the entire device.

[0007] Preferably, the bottom of the shell is provided with an adsorption structure.

[0008] Preferably, it also includes a fall arrest safety rope, one end of which is connected to the shell.

[0009] Preferably, the indicator light is connected to the photosensitive sensor.

[0010] Preferably, the wireless communication module supports bidirectional wireless communication.

[0011] Preferably, the battery is a rechargeable lithium battery.

[0012] Preferably, the horn is a waterproof horn.

[0013] Preferably, the device also includes an expansion interface.

[0014] Preferably, the MCU is connected to the photosensitive sensor and adjusts the indicator light according to its signal.

[0015] On the other hand, a tower crane safety monitoring system includes a cab main unit and a dedicated alarm device for the main hook as described above; the cab main unit is equipped with a wireless communication module for communicating with the alarm device.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] 1. Easy and secure installation: The strong magnetic adsorption structure at the bottom of the casing allows for quick and secure attachment to the metal surface of the hook or lifting device, eliminating the need for complex bolt fixing procedures and facilitating easy assembly and disassembly. Combined with a fall arrest safety rope, it forms a double safety measure, effectively preventing falls from heights.

[0018] 2. Strong Environmental Adaptability: The built-in photosensor and MCU automatically adjust the brightness, color, and flashing frequency of the indicator lights according to ambient light levels, ensuring optimal visual warning effects under any lighting conditions. The metal casing with a waterproof adhesive layer provides excellent waterproof, dustproof, and impact-resistant performance, making it suitable for harsh construction site environments.

[0019] 3. Intelligent linkage: A two-way communication link is established between the wireless communication module and the main unit in the cab. It can not only receive remote commands from the cab, but also feed back the status of the equipment to the cab, realizing intelligent safety monitoring of the tower crane in coordination between the top and bottom.

[0020] 4. Expandable functionality: The reserved aviation connector interface provides the possibility for subsequent connection of various sensors or expansion of other functional modules, improving the product's versatility and future upgrade potential.

[0021] 5. Excellent warning effect: It adopts a combination of high-power waterproof speaker and high-brightness three-color LED light, which has strong sound and light alarm penetration and can effectively cover noisy construction sites, promptly reminding relevant personnel in the work area to pay attention and avoid the area. Attached Figure Description

[0022] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the external structure of the device of this utility model;

[0024] Figure 2 This is an exploded view of the structure of the device of this utility model;

[0025] Figure 3 This is a schematic diagram of the communication connection between the device of this utility model and the driver's cab;

[0026] Figure 4 This is a block diagram of the modular functions of the device of this utility model;

[0027] Figure 5 This is a flowchart of the operation of the device of this utility model;

[0028] Figure 6 This is a schematic diagram of the photosensitive control process of the device of this utility model;

[0029] The components in the diagram are labeled as follows: 1-Housing, 2-Fixing ring, 3-Charging interface, 4-Photosensitive sensor, 5-Power switch, 6-Extension interface, 7-Indicator light, 8-Strong magnetic adsorption structure, 9-Battery, 10-MCU, 11-Speaker. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] In one embodiment of this utility model, such as Figure 1-6 As shown, this embodiment provides a special alarm device for the main hook of a tower crane, including a housing 1, a battery 9, a circuit board, a speaker 11, an indicator light 7, an MCU 10, a wireless communication module, a photosensitive sensor 4, a charging interface 3, and a power switch 5.

[0033] The battery 9 is electrically connected to the device circuit board and supplies power to the entire device;

[0034] The MCU10 is mounted on the device circuit board and is used to receive and process alarm signals, and to control the speaker 11 and indicator light 7 to provide audible and visual alarms.

[0035] The wireless communication module is connected to the MCU10 and is used to receive wireless alarm commands from the outside.

[0036] The photosensitive sensor 4 is connected to the MCU10 and is used to detect ambient light intensity;

[0037] The charging interface 3 is connected to the battery 9 and is used to charge the battery 9;

[0038] The power switch 5 is used to control the power supply to and from the entire device.

[0039] In another embodiment of the present invention, the housing 1 is made of metal material, its outer surface is covered with a waterproof adhesive layer, and the bottom of the housing 1 is provided with an adsorption structure 8, preferably a strong magnetic adsorption structure, for adsorbing and fixing the device to the surface of the lifting device or steel structure.

[0040] In another embodiment of this utility model, a fall protection safety rope is also included. The fall protection safety rope is a metal spring rope or a steel wire rope. One end of the rope is fixedly connected to the shell 1, and the other end is provided with a fixing ring 2 for attaching to the main structure of the crane.

[0041] In another embodiment of this utility model, the indicator light 7 is a tri-color LED light, which can automatically switch between multiple flashing modes according to the ambient light intensity detected by the photosensitive sensor 4.

[0042] In another embodiment of this utility model, the wireless communication module supports bidirectional wireless communication with the cab host, can receive voice commands or automatically triggered alarm signals from the cab, and can provide feedback on device status information to the cab.

[0043] In another embodiment of this utility model, the battery 9 is a rechargeable lithium battery 9 with a rated output voltage of DC12V and a charging voltage of DC12.6V, and accepts external charging management through the charging interface 3.

[0044] In another embodiment of this utility model, the speaker 11 has an impedance of 8 ohms and a rated power of 5W, and is capable of broadcasting pre-stored voice warning information or real-time received voice commands.

[0045] In another embodiment of this utility model, the device is further provided with an expansion interface 6, preferably an aviation plug interface, for connecting an external distance sensor, weight sensor or functional expansion module.

[0046] In another embodiment of this utility model, the MCU10 is also configured to dynamically adjust the brightness, color and flashing frequency of the indicator light 7 according to the ambient light intensity signal collected by the photosensitive sensor 4, so as to adapt to the visual warning requirements under different lighting conditions.

[0047] On the other hand, this utility model provides a tower crane safety monitoring system, including a cab host and a dedicated alarm device for the main hook as described above; the cab host has a built-in wireless transmission module, which can send control commands or alarm information to the alarm device; the alarm device receives commands and executes corresponding alarm operations through a wireless communication module, realizing coordinated safety monitoring with the cab host.

[0048] The working principle of this utility model is as follows: This utility model discloses a special alarm device for the main hook of a tower crane. Its main body is a square shell 1 made of metal material. The outer surface of the square shell 1 is covered with a waterproof adhesive layer, which serves to seal, absorb shock, and insulate. A strong magnetic adsorption structure 8 (such as a neodymium iron boron magnet) is embedded at the bottom of the square shell 1, so that the entire device can be firmly adsorbed onto the metal surface of the tower crane hook assembly.

[0049] The square housing 1 has a waterproof horn 11 and a tri-color LED indicator 7 on its front. The side of the square housing 1 has a charging port 3 (such as a DC socket), a power switch 5, and an aviation plug interface. In addition, a fall arrest safety rope is fixedly connected to the square housing 1. This safety rope is preferably a metal wire rope with a plastic sheath, and its end has a fixing ring 2. After the device is installed, the fixing ring 2 is used to attach to a crane boom or other sturdy structure, forming a fall arrest backup protection.

[0050] The device contains an internal circuit board that integrates an MCU10 (a microcontroller unit, such as an STM32 series chip) and a wireless communication module (supporting LoRa, 4G, or dedicated wireless protocols). A rechargeable lithium battery 9 powers the entire circuit, with a rated output voltage of DC12V. A photosensitive sensor 4 is mounted on the square housing 1 in a location easily receiving light and is connected to the AD acquisition pin of the MCU10.

[0051] Its workflow is as follows: When the main unit in the cab needs to issue an alarm, the operator can trigger the alarm signal via the main unit button or the system automatically. The wireless signal is received by the wireless communication module of the alarm device and transmitted to the MCU10. After the MCU10 parses the instruction, it drives the waterproof speaker 11 to emit a high-decibel alarm sound or play a pre-stored voice (such as "Caution: Avoidance"), and drives the tri-color LED indicator 7 to emit a strong flashing light. At the same time, the photosensitive sensor 4 detects the ambient light intensity in real time, and the MCU10 dynamically adjusts the brightness of the LED light (the dimmer the light, the brighter the light) and the flashing mode (such as constant light, fast flashing, slow flashing) according to this signal, and even switches the color (such as white light during the day and red light at night) to achieve the most conspicuous effect. The device can also report its own power level, working status and other information to the main unit in the cab via the wireless communication module.

[0052] The safety monitoring system of this utility model consists of a main unit in the cab and one or more dedicated alarm devices for the main hook. It forms a complete distributed alarm system through a wireless network, realizing comprehensive and intelligent safety monitoring of the tower crane's operating area.

[0053] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A special alarm device for the main hook of a tower crane, characterized in that, The device includes a housing, a battery, a circuit board, a speaker, indicator lights, an MCU, a wireless communication module, a photosensitive sensor, a charging interface, and a power switch. The battery is electrically connected to the circuit board and supplies power to the entire device. The MCU is mounted on the circuit board and controls the speaker and indicator lights for audible and visual alarms. The wireless communication module is connected to the MCU and receives wireless alarm commands from external sources. The photosensitive sensor is connected to the MCU. The charging interface is connected to the battery. The power switch controls the power supply to and from the entire device.

2. A tower crane main hook dedicated alarm device according to claim 1, characterised in that, The bottom of the shell is equipped with an adsorption structure.

3. A tower crane main hook dedicated alarm device according to claim 2, characterised in that, It also includes a fall protection rope, one end of which is connected to the shell.

4. The tower crane main hook dedicated alarm device according to claim 1, characterized in that, The indicator light is connected to the photosensitive sensor.

5. The tower crane main hook dedicated alarm device according to claim 1, characterized in that, The wireless communication module supports bidirectional wireless communication.

6. The tower crane main hook dedicated alarm device according to claim 1, characterized in that, The battery is a rechargeable lithium battery.

7. The tower crane main hook dedicated alarm device according to claim 1, characterized in that, The horn is a waterproof horn.

8. The tower crane main hook dedicated alarm device according to claim 1, characterized in that, The device also has an expansion interface.

9. The special alarm device for the main hook of a tower crane according to claim 1, characterized in that, The MCU is connected to the photosensitive sensor and adjusts the indicator light according to its signal.

10. A tower crane safety monitoring system, characterized in that It includes a cab main unit and a main hook dedicated alarm device as described in any one of claims 1–9; the cab main unit is equipped with a wireless communication module for communicating with the alarm device.

Images