Novel moment limiter for crane

Abstract

The invention provides a novel moment limiter for cranes, comprising a power module, a data acquisition module, a data processing module, a data display module, a control module and a remote monitoring maintenance module; in the data acquisition module, a hydraulic sensor, an angle sensor and an arm length sensor, which are respectively arranged at corresponding positions of a crane, are connected with an input circuit, and the hydraulic sensor and the arm length sensor can be manually adjusted so as to achieve zero-position self-adjustment; in the data processing module, a single chip computer is connected with a memory and the input circuit; in the data display module, a display is connected with the single chip computer; in the control module, a controller is connected with the single chip computer through an output circuit, and an alarm is connected with the single chip computer through the output circuit; in the remote monitoring maintenance module, a GPS / GPRS module is connected with the single chip computer through a CAN communication circuit. The novel moment limiter for cranes ensures the accuracy and normal operation of a safety protection system, and has the advantages of simple structure, convenient operation and strong popularization.

Description

Technical field [0001] The invention relates to a safety protection device for cranes, in particular to a novel torque limiter for cranes. Background technique [0002] Due to the need of safe production, the current cranes are equipped with torque limiters with safety protection function when they leave the factory. The existing torque limiters have the following disadvantages: First, the use environment of truck cranes is extremely harsh and the arm length of the torque limiter The sensor detection line is often hung up so that the torque limiter cannot work normally. The manufacturer must send professional technicians for on-site treatment or send it to the manufacturer for repair, which causes the crane to operate in an unprotected state during this time, which seriously affects safe production; The hydraulic sensor is installed on the rod cavity and the rodless cavity of the luffing cylinder. Due to the complicated changes in the internal pressure of the hydraulic system and...

AI Technical Summary

Problems solved by technology

[0002] Due to the needs of safe production, the current cranes are equipped with torque limiters with safety protection functions when they leave the factory. The existing torque limiters have the following disadvantages: First, due to the extremely harsh operating environment of truck cranes, the arm length of the torque limiter The sensor detection line is often hung up so that the torque limiter cannot work normally. The manufacturer must send professional technicians to deal with it on the spot or send it to the manufacturer for repair. As a result, the operation of the crane is in an unprotected state during this time, which seriously affects safe production; The hydraulic sensor is installed on the rod cavity and the rodless cavity of the luffing cylinder. Due to the complex internal pressure change of the hydraulic system, affected by the internal pressure of the system, the hydraulic sensor often drifts in zero position, and the error increases, resulting in torque limiter Generate false alarms and wrong actions, affecting safe production; third, there is no remote monitoring and maintenance function. If the crane is working outside, the monitoring personnel in different places cannot accurately grasp the crane’s position and real-time status. Loss of control without operator action

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