A wear detection device for a conveyor belt (1) includes magnet members (12a and 12b) buried in a conveyor belt (11) having an endless belt shape, a magnetic sensor (13j) which is arranged opposite to an outer circumferential surface of the conveyor belt (11) and is configured to detect magnetic fields from the magnet members (12a and 12b) to generate an output signal, and a calculation unit (141) which is configured to calculate the thickness of the conveyor belt (11) according to the output signal generated by the magnetic sensor (13j). The wear detection device for a conveyor belt (1) further includes a storage unit (142) which is configured to store the thickness calculated by the calculation unit (141), and a processing unit (143) which is configured to calculate the decrease amount of the thickness per a predetermined moving load amount of the conveyor belt (11) according to the thickness stored in the storage unit (142) and determine whether or not this value exceeds a threshold value set in advance.

Provided are a conveyor belt further enhancing the durability of loop coils embedded in the conveyor belt so as to detect vertical tears in the conveyor belt; and a belt conveyor system using the conveyor belt. A conveyor belt includes a core layer having a plurality of metal cords extending in the belt longitudinal direction arranged in parallel in the belt width direction; an upper cover rubber and a lower cover rubber disposed so as to interpose a core layer from above and below; a plurality of loop coils embedded at intervals in the belt longitudinal direction in the lower cover rubber; and protective layers being disposed between the core layer above and each of the loop coils below and embedded in the lower cover rubber at intervals in the belt longitudinal direction.

Surface image data relating to an upper cover rubber is continuously and successively captured by a surface camera device and input to a computation device. Each piece of surface image data is stored in a database in association with data on the circumferential position of that surface image data on a conveyor belt and data on the time at which that surface image data was captured. An input unit is used to display any piece of surface image data on a monitor, register surface image data in which a predetermined defect is present on the surface of the upper cover rubber in the database as data to be monitored, and automatically register in the database surface image data having the same circumferential position data as the data to be monitored as related data to be monitored. Such monitoring system determines the state of damage of a cover rubber surface.

In addition to the amount of wear of a rubber comprising at least an upper cover rubber of a conveyor belt installed at a use site, data of at least one input item from six input items consisting of an impact force acting on the conveyor belt, a tensile force, an indicator indicating a state of a core, an indicator indicating a state of an endless portion, an indicator indicating a state of a belt conveyor device, and an indicator indicating a use environment of the conveyor belt is input into a server via an input unit, and a calculation unit calculates a remaining service life of the conveyor belt based on the data input and, stored in a storage unit, a belt specification database and a tolerance range database in which a tolerance range for each of the input items is input in advance per belt specification.

A conveyor belt management system is capable of determining in detail the state of a conveyor belt, more reliably preventing the conveyor belt becoming unusable, determining a suitable replacement period, and lowing the running costs of the conveyor belt. A state of the conveyor belt is monitored by a calculation unit and an expected service life before use is calculated based on data of an indicator indicating a status of a belt conveyor device and an indicator indicating a use environment of the conveyor belt; at least one data from an amount of wear, an impact force, a tensile force, a state of a core, and an indicator indicating a state of an endless portion; and a belt specification database and a tolerance range database in which a tolerance range for each of the input items in input in advance per belt specification stored in a storage unit.

A system for monitoring conveyor belts is disclosed. The system includes a printed inductive antenna loop, a transmitter, a detector, and circuitry. The antenna is printed on and/or installed (inserted) into a conveyor belt. The transmitter is proximate the printed antenna and is configured to generate an electromagnetic field. The detector is configured to measure an induced electric field from the printed inductive antenna loop. The circuitry is configured to detect damage of the conveyor belt based on the measured induced electromagnetic field.

A measurement system and a method for measuring a coefficient of friction on a slidable conveyor belt in a direction of movement are provided. The system includes a disk floatingly placed on the conveyor belt and having a bottom surface, wherefrom projects at least one rounded element that rests on the conveyor belt, having a shape that, regardless of the relative orientation of the disk and the conveyor belt, at least one rounded element extends along a direction not parallel to the direction of movement, a pair of abutment elements maintaining the disk fixed with respect to the direction of movement of the conveyor belt, and a pair of load cells operatively associated with the abutment elements and with the disk, to measure a thrust force exerted by the disk on each load cell by effect of the relative sliding of the conveyor belt with respect to the disk.

A portable roller dislodging device is disclosed. The device is configured to dislodge a jammed roller of a conventional conveyor. The device may be detachably secured to the rail of the conveyor about any selectively-desired position. The device includes a motor, a rotating motor shaft, and a means for coupling the motor shaft to the jammed roller to facilitate dislodgement thereof. The device may be operated remotely via a wireless remote control device.

The invention relates to a roller testing device for a roller adapter of an overhead conveyor system comprising a drive unit for rotatably driving at least one carrying roller of the roller adapter, a sensor unit for capturing a measured value correlating with a state of wear of a pivot bearing of the at least one carrying roller and an evaluation unit for determining the state of wear on the basis of the measured value.

Provided is a conveyor belt monitoring system that determines whether or not an abnormality has occurred in the conveyor belt. The system successively detects elongation of a running conveyor belt using an elongation detection mechanism, and further successively detects tension acting on a core layer forming the conveyor belt on the basis of power consumption of the running conveyor belt. On the basis of data obtained, the system monitors the presence/absence of the abnormality in the conveyor belt using a control unit.