Disclosed are an online monitoring system for a crack on a hoist spindle and an operation method thereof. The system comprises: a rope power part, a crack detection part, a wireless transmission part, and a computer. The rope power part comprises two traction ropes, two guide wheels, two stepper motors, and two stepper motor drivers. The crack detection part comprises a spiral tube guide rail, a sliding body, and an ultrasonic generator. The wireless transmission part comprises three zigbee wireless sensing modules. The zigbee wireless sensing modules receive instructions from the computer and transmit the instructions to the stepper motor drivers to control the motors to rotate. The stepper motors drive the guide wheels to rotate to realize the winding of the ropes, so as to pull the sliding body to slide on the spiral tube guide rail. The ultrasonic generator clamped on the sliding body monitors the rotating spindle along the spiral tube guide rail. The zigbee wireless sensing modules transmit the detected data to the computer in real time. The present invention can effectively monitor a hoist spindle in time before a failure occurs, thereby avoiding safety accidents.

Disclosed are an online monitoring system for a crack on a hoist spindle and an operation method thereof. The system comprises: a rope power part, a crack detection part, a wireless transmission part, and a computer. The rope power part comprises two traction ropes, two guide wheels, two stepper motors, and two stepper motor drivers. The crack detection part comprises a spiral tube guide rail, a sliding body, and an ultrasonic generator. The wireless transmission part comprises three zigbee wireless sensing modules. The zigbee wireless sensing modules receive instructions from the computer and transmit the instructions to the stepper motor drivers to control the motors to rotate. The stepper motors drive the guide wheels to rotate to realize the winding of the ropes, so as to pull the sliding body to slide on the spiral tube guide rail. The ultrasonic generator clamped on the sliding body monitors the rotating spindle along the spiral tube guide rail. The zigbee wireless sensing modules transmit the detected data to the computer in real time. The present invention can effectively monitor a hoist spindle in time before a failure occurs, thereby avoiding safety accidents.

A large-tonnage skip anti-blocking system includes a skip, wherein two parallel rows of guide rails are fixed to upper and lower shaft walls of a shaft on two sides of the skip correspondingly, a plurality of pulleys are mounted on the guide rails in a matched mode, impact plates are mounted between the upper and lower pulleys, front plates of the impact plates are mounted between the upper and lower sets of pulleys in the front row, rear plates of the impact plates are mounted between the upper and lower sets of pulleys in the back row, a length of rib plates of the impact plates is greater than a width of the skip, hydraulic cylinder bases and vibration motors are mounted on outer sides of the rib plates at intervals.

A large-tonnage skip anti-blocking system includes a skip, wherein two parallel rows of guide rails are fixed to upper and lower shaft walls of a shaft on two sides of the skip correspondingly, a plurality of pulleys are mounted on the guide rails in a matched mode, impact plates are mounted between the upper and lower pulleys, front plates of the impact plates are mounted between the upper and lower sets of pulleys in the front row, rear plates of the impact plates are mounted between the upper and lower sets of pulleys in the back row, a length of rib plates of the impact plates is greater than a width of the skip, hydraulic cylinder bases and vibration motors are mounted on outer sides of the rib plates at intervals.

Disclosed herein is a system for controlling a mining machine within an underground mine. A rotatable laser source sends laser light and return light sensor receives reflected laser light and provides an indication of distance and return light intensity at multiple different rotation angles. A co-ordinate reference point comprises a pattern of varying reflectivity and provides at least a 2D co-ordinate position. A processor determines an absolute co-ordinate position in space of the mining machine as the mining machine moves through the underground mine. The processor collects intensity values of reflected laser light for multiple respective rotation angles and detects the pattern of the reference point in the multiple intensity values of reflected laser light, and determines the absolute co-ordinate position in space of the mining machine based on spatial information of the detected pattern.

A method for operating an underground loader is disclosed. The method includes detecting, by a controller, a first position of the underground loader within a worksite. The method also includes determining, by the controller, a location of a dumping pit within the worksite. Further, the method includes determining, by the controller, a route for the underground loader to tram from the first position to the location of the dumping pit. Furthermore, the method includes controlling, by the controller, a movement of the underground loader along the route up to the location of the dumping pit. The method also includes moving, by the controller, an implement assembly of the underground loader based on a profile of a terrain along the route and a height of an embankment defined at an edge of the dumping pit.

A method for operating an underground loader is disclosed. The method includes detecting, by a controller, a first position of the underground loader within a worksite. The method also includes determining, by the controller, a location of a dumping pit within the worksite. Further, the method includes determining, by the controller, a route for the underground loader to tram from the first position to the location of the dumping pit. Furthermore, the method includes controlling, by the controller, a movement of the underground loader along the route up to the location of the dumping pit. The method also includes moving, by the controller, an implement assembly of the underground loader based on a profile of a terrain along the route and a height of an embankment defined at an edge of the dumping pit.

A large-tonnage skip anti-blocking system includes a skip, wherein two parallel rows of guide rails are fixed to upper and lower shaft walls of a shaft on two sides of the skip correspondingly, a plurality of pulleys are mounted on the guide rails in a matched mode, impact plates are mounted between the upper and lower pulleys, front plates of the impact plates are mounted between the upper and lower sets of pulleys in the front row, rear plates of the impact plates are mounted between the upper and lower sets of pulleys in the back row, a length of rib plates of the impact plates is greater than a width of the skip, hydraulic cylinder bases and vibration motors are mounted on outer sides of the rib plates at intervals.

A large-tonnage skip anti-blocking system includes a skip, wherein two parallel rows of guide rails are fixed to upper and lower shaft walls of a shaft on two sides of the skip correspondingly, a plurality of pulleys are mounted on the guide rails in a matched mode, impact plates are mounted between the upper and lower pulleys, front plates of the impact plates are mounted between the upper and lower sets of pulleys in the front row, rear plates of the impact plates are mounted between the upper and lower sets of pulleys in the back row, a length of rib plates of the impact plates is greater than a width of the skip, hydraulic cylinder bases and vibration motors are mounted on outer sides of the rib plates at intervals.

A reliability robust design method for multiple failure modes of an ultra-deep well hoisting container, including: defining randomness of a structural parameter, a material property, and a dynamic load of a hoisting container, and solving a random response of a structural failure for a random parameter using a design of experiment method; establishing reliability performance functions of each failure modes in accordance with failure criterion of the hoisting container; establishing a joint probability model of correlated failures using a copula theory in consideration of probability correlation between the failure modes; establishing, a system reliability model with failure correlation of the hoister container; establishing a sensitivity model concerning each random parameter for system reliability of the hoisting container; and establishing, in conjunction with an optimization design model, a reliability robust optimization design model for the hoisting container using a joint failure probability and parameter sensitivity as constraints.