CN-121990463-A - Device and method for monitoring working state of container lifting appliance spin lock

CN121990463ACN 121990463 ACN121990463 ACN 121990463ACN-121990463-A

Abstract

The invention provides a device and a method for monitoring the working state of a container lifting appliance twistlock, wherein the device comprises a twistlock mechanism, the device comprises a twistlock shell, a twistlock shaft is arranged at the bottom of the twistlock shell in a penetrating way, the twistlock shaft can rotate around the axis of the twistlock shaft, a torque sensor is arranged in the twistlock shaft, a lock head is coaxially fixed at the bottom end of the twistlock shaft through a connecting bottom shaft, three monitoring targets are arranged on the circumference array of the outer ring of the twistlock shaft, a supporting ring is coaxially fixed on the inner wall of the bottom end of the twistlock shell, three groups of laser displacement sensors are circumferentially arranged on the inner wall of the supporting ring and respectively face the three monitoring targets, an angle monitoring module is fixed on the top surface of a magnetic attraction ring, the magnetic attraction ring is magnetically attracted and fixed on the top end of a first limiting seat, a micro photoelectric sensor is arranged on the inner side of the supporting ring, and the micro photoelectric sensor faces to a reference target on the surface of the twistlock shaft. The invention adopts a non-contact sensing scheme, prevents the safety accidents of container tilting, falling and the like caused by unlocking and lifting of the rotary lock and incomplete removal of the lifting appliance, and ensures the safety of loading and unloading operations.

Inventors

ZHANG ZHONGBO
GONG GUOXING
WANG GUO
MIN QINGSONG
YU PENGTAO
ZHAO BO
CHEN GUOXING
ZHANG ZHIGANG

Assignees

蛇口集装箱码头有限公司
赤湾集装箱码头有限公司
深圳赤湾港集装箱有限公司
深圳妈港仓码有限公司
深圳海星港口发展有限公司

Dates

Publication Date: 20260508
Application Date: 20260306

Claims (7)

1. Monitoring device for the working state of a container lifting appliance spin lock, which is characterized by comprising: The rotary lock mechanism (300) comprises a rotary lock shell (301), wherein a rotary lock shaft (303) is arranged at the bottom of the rotary lock shell (301) in a penetrating mode, the rotary lock shaft (303) can rotate around the axis of the rotary lock shaft (303), a torque sensor is arranged in the rotary lock shaft (303), a lock head (3041) is coaxially fixed at the bottom end of the rotary lock shaft (303) through a connecting bottom shaft (304), three monitoring targets (3032) are arranged on the circumferential array of the outer ring of the rotary lock shaft (303), a supporting circular ring (305) is coaxially fixed on the inner wall of the bottom end of the rotary lock shell (301), three groups of laser displacement sensors (3052) are arranged on the inner wall of the supporting circular ring (305) in the circumferential mode, and the three groups of laser displacement sensors (3052) are opposite to the three monitoring targets (3032) respectively; The angle monitoring module (306), the angle monitoring module (306) is fixed on the top surface of the magnetic attraction ring (3061), and the magnetic attraction ring (3061) is fixed on the top end of the first limiting seat (3042) in a magnetic attraction way; The miniature photoelectric sensor (3051) is arranged on the inner side of the supporting circular ring (305), and the miniature photoelectric sensor (3051) is opposite to a reference target point (3031) on the surface of the spin lock shaft (303); And the controller (400) is electrically connected with the angle monitoring module (306), the torque sensor, the laser displacement sensor (3052) and the micro photoelectric sensor (3051) respectively.
2. The monitoring device for the working state of the container lifting appliance twistlock according to claim 1, wherein an inner wall of the twistlock shell (301) is coaxially fixed with an annular second limiting seat (3044), and two arc limiting grooves are formed in the inner annular wall of the second limiting seat (3044); A disc-shaped first limit seat (3042) is fixed at the top end of the spin lock shaft (303), a limit block matched with the arc-shaped limit groove is arranged at the edge of the first limit seat (3042), and a magnetic trigger piece is embedded on the upper surface of the first limit seat (3042); The end part of the arc-shaped limiting groove of the second limiting seat (3044) is provided with a Hall sensor opposite to the magnetic trigger piece, and the Hall sensor is electrically connected with the controller (400).
3. The container spreader twist-lock operating condition monitoring device of claim 2, further comprising: The lifting device comprises a lifting device cross beam (100), wherein an upper connecting plate (101) is fixed at the bottom of the lifting device cross beam (100), a lower connecting plate (201) matched with the upper connecting plate (101) is fixedly connected to a connecting seat (200), and the upper connecting plate (101) and the lower connecting plate (201) are in detachable fixed connection through long screw rod penetrating locking; the connecting lug plate (302), the top end of the spin lock mechanism (300) is fixedly connected with the connecting lug plate (302), and the connecting lug plate (302) is fixedly connected to the bottom surface of the connecting seat (200).
4. A container spreader twist-lock operation status monitoring device according to claim 3, wherein the controller (400) comprises: the data acquisition module is used for receiving signals of the laser displacement sensor (3052), the micro photoelectric sensor (3051), the Hall sensor and the torque sensor; The data processing unit is used for carrying out redundancy check and logic analysis on a plurality of groups of signals; The alarm driving module is used for triggering audible and visual alarm and controlling an external driving mechanism to stop; And the communication module integrates the RS485 interface and the Ethernet interface and is used for realizing data transmission and remote monitoring.
5. The device for monitoring the working state of the container spreader twistlock according to claim 4, wherein the angle monitoring module (306) is a biaxial inclination sensor; The micro photoelectric sensor (3051) and the laser displacement sensor (3052) are different in height at the inner side of the supporting circular ring (305), and when the spin lock shaft (303) rotates to the locking or unlocking initial position, the reference target point (3031) triggers the micro photoelectric sensor (3051) to send a high-level reference signal to the controller (400).
6. The monitoring device for the working state of the container spreader twist-lock according to claim 5, further comprising a driving mechanism in transmission connection with the twist-lock shaft (303), wherein the driving mechanism is a servo motor for driving the twist-lock shaft (303) to rotate; The servo motor driving mechanism is provided with a servo driver, and the servo driver is electrically connected with the controller (400) and is used for receiving pulse signals output by the controller (400) so as to control the rotating speed and the rotating angle of the servo motor.
7. A method for monitoring the operation state of a twistlock of container spreader according to any one of claims 1 to 6, characterized in that the monitoring method comprises the steps of: The method comprises the steps of adjusting a spin lock shaft (303) to an unlocking initial position, enabling a reference target point (3031) to be opposite to a micro photoelectric sensor (3051), triggering the micro photoelectric sensor (3051) to send a reference signal to a controller (400), resetting an inclination angle value of an angle monitoring module (306) and a displacement value of a laser displacement sensor (3052) by the controller (400), and establishing a monitoring reference coordinate system; Presetting a locking angle threshold, an unlocking angle threshold, a torque safety threshold and a data deviation threshold; after a lock head (3041) is inserted into a container corner fitting hole, an external driving mechanism drives a rotary lock shaft (303) to rotate clockwise, a laser displacement sensor (3052), an angle monitoring module (306) and a torque sensor collect data in real time and transmit the data to a controller (400), wherein the controller (400) performs first comparison on the data of the laser displacement sensor (3052) and performs secondary verification on the data of the angle monitoring module (306) to obtain effective angle data; if the effective angle data reaches a locking angle threshold value, the torque value is not greater than a torque safety threshold value and the Hall sensor sends an in-place signal, judging that the signal is completely locked and sending a lifting signal; Repeating the data checking logic, judging that the container is completely unlocked and transmitting a removable lifting appliance signal if the effective angle data reaches an unlocking angle threshold value and the micro photoelectric sensor (3051) detects a reference signal; If the sensor signal is interrupted or the data is abnormal, the controller (400) triggers an alarm and switches to the judgment of the residual effective data, and meanwhile, the monitoring data is uploaded to the upper computer and stored.

Description

Device and method for monitoring working state of container lifting appliance spin lock Technical Field The invention belongs to the technical field of detection of the opening and closing states of container lifting appliance twistlocks, and particularly relates to a device and a method for monitoring the working states of container lifting appliance twistlocks. Background The container is used as a carrier in the field of logistics transportation, the loading and unloading operation of the container is finished by the container lifting appliance, the twistlock on the lifting appliance is a key component for realizing reliable connection of the lifting appliance and the container, and the opening and closing states of the twistlock directly determine the safety and the efficiency of the loading and unloading operation. If the twist lock is not completely locked or unlocked abnormally, serious safety accidents such as container inclination and falling are easily caused, or loading and unloading stagnation is caused, so that logistics links are delayed. The current mainstream spin lock working state monitoring mode is mainly based on contact detection elements such as a travel switch, a proximity sensor and the like, the elements are required to be directly contacted with a spin lock mechanical structure, the problem that detection accuracy is reduced or failure occurs easily due to mechanical abrasion and vibration impact after long-term use is solved, the failure rate of the elements is obviously increased under severe environments such as high humidity, dustiness and salt fog of a port, frequent maintenance and replacement are required, and the operation cost is increased. Disclosure of Invention The embodiment of the invention aims to provide a device and a method for monitoring the working state of a container lifting appliance rotary lock, and aims to solve the technical problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions. According to one embodiment of the present invention, there is provided a container spreader twist-lock operation status monitoring device comprising: The rotary lock mechanism comprises a rotary lock shell, wherein a rotary lock shaft is arranged at the bottom of the rotary lock shell in a penetrating way, the rotary lock shaft can rotate around the axis of the rotary lock shaft, a torque sensor is arranged in the rotary lock shaft, and the bottom end of the rotary lock shaft is coaxially fixed with a lock head through a connecting bottom shaft; The angle monitoring module is fixed on the top surface of the magnetic attraction ring, and the magnetic attraction ring is fixed on the top end of the first limiting seat in a magnetic attraction manner; the miniature photoelectric sensor is arranged on the inner side of the supporting circular ring and is opposite to a reference target point on the surface of the spin lock shaft; and the controller is respectively and electrically connected with the angle monitoring module, the torque sensor, the laser displacement sensor and the micro photoelectric sensor. Further, the inner wall of the rotary lock shell is coaxially fixed with an annular second limiting seat, and the inner annular wall of the second limiting seat is provided with two arc limiting grooves; The top end of the spin lock shaft is fixed with a disc-shaped first limit seat, a limit block matched with the arc-shaped limit groove is arranged at the edge of the first limit seat, and a magnetic trigger piece is embedded on the upper surface of the first limit seat; The end part of the arc-shaped limiting groove of the second limiting seat is provided with a Hall sensor opposite to the magnetic trigger piece, and the Hall sensor is electrically connected with the controller. Further, the method further comprises the following steps: The lifting device comprises a lifting device beam, wherein an upper connecting plate is fixed at the bottom of the lifting device beam, a lower connecting plate matched with the upper connecting plate is fixedly connected to a connecting seat, and the upper connecting plate and the lower connecting plate are in detachable fixed connection through long screw rod penetrating locking; the top end of the spin lock mechanism is fixedly connected with the connecting lug plate, and the connecting lug plate is fixedly connected to the bottom surface of the connecting seat. Further, the controller includes: the data acquisition module is used for receiving signals of the laser displacement sensor, the miniature photoelectric sensor, the Hall sensor and the torque sensor; The data processing unit is used for carrying out redundancy check and logic analysis on a plurality of groups of signals; The alarm driving module is used for triggering audible and visual alarm and controlling an external driving mechanism to stop; and the communication module integrates the RS and the