Abstract

The present invention discloses a drive system of a scraper conveyor and a control method. The drive system includes a nose sprocket, a tail sprocket, a nose sprocket drive mechanism, and a tail sprocket drive mechanism, where the nose sprocket drive mechanism is a hydraulic motor I, and the tail sprocket drive mechanism is a hydraulic motor II; and a hydraulic system that drives the hydraulic motor I and a hydraulic system that drives the hydraulic motor II include same hydraulic elements, and both include a three-position four-way solenoid directional valve, a two-position two-way solenoid directional valve, a two-position three-way solenoid directional valve, an accumulator, and an oil supplement valve group. The present invention is applicable to rapid starting and stopping of the scraper conveyor in a heavy load status while adjusting chain tension in real time, thereby resolving a power imbalance problem in a dual-drive system, and has a simple structure and a long service life.

IPC Classes  ?

• B65G 43/10 - Sequence control of conveyors operating in combination
• B65G 19/18 - Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors Details
• B65G 23/44 - Belt- or chain-tensioning arrangements
• B65G 23/26 - Applications of clutches or brakes
• B65G 23/22 - Arrangements or mountings of driving motors
• F15B 1/04 - Accumulators
• F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors

Abstract

A driving system of a scraper conveyor, comprising a machine head chain wheel (11A), a machine tail chain wheel (11B), a machine head chain wheel driving mechanism, and a machine tail chain wheel driving mechanism. The machine head chain wheel driving mechanism is a hydraulic motor I (9A), and the machine tail chain wheel driving mechanism is a hydraulic motor II (9B). A hydraulic system for driving the hydraulic motor I (9A) and a hydraulic system for driving the hydraulic motor II (9B) comprise identical hydraulic elements and each comprise a three-position four-way electromagnetic reversing valve (2), a two-position two-way electromagnetic reversing valve (3), a two-position three-way electromagnetic reversing valve (6), an energy accumulator (8,) and an oil supplementing valve group (13).

IPC Classes  ?

• B65G 43/00 - Control devices, e.g. for safety, warning or fault-correcting
• B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
• B65G 23/22 - Arrangements or mountings of driving motors
• B65G 23/26 - Applications of clutches or brakes
• B65G 23/44 - Belt- or chain-tensioning arrangements
• B65G 19/18 - Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors Details

Abstract

Provided are a scraper-conveyor chain tension monitoring system and adjustment method; the scraper-conveyor tension monitoring system comprises an industrial camera (3), an image processing module, a signal conditioning module, an industrial control computer, and a scraper conveyor chain tension adjustment system, the industrial camera (3) being disposed on the side of a machine head sprocket (4) facing the scraper conveyor; the industrial camera (3) is connected to the image processing module signal, and sends a captured image signal to the image processing module in real time, and the image processing module extracts the angle between the center line of the scraper chain meshed on the sprocket (4) and the horizontal extension line of the mesh according to the image information, and, by way of the signal conditioning module, converts the signal into an electrical signal and then sends it to the industrial control computer; the industrial control computer adjusts the tension of the scraper chain in real time according to a control signal outputted by a preset system to drive the tension adjustment system of the scraper chain until a preset value is reached. The scraper-conveyor chain tension monitoring system and adjustment method can monitor online and adjust the chain tension of a heavy-duty scraper conveyor in real time, improving the operational efficiency of the scraper conveyor without affecting its normal operation.

IPC Classes  ?

• B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
• B65G 19/20 - Traction chains, ropes, or cables
• B65G 19/18 - Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors Details

Abstract

Disclosed are a chain tension balance control system and method for a permanent-magnet-driven mining scraper conveyor. A shaft I of a tail chain wheel I (14) and a shaft II of a tail chain wheel II (15) are separately arranged; two servo driving hydraulic cylinders are arranged in parallel on a base (29) of a scraper machine; scraper chain strain gages are mounted on some chain links of scraper chains (5); displacement sensors are arranged in both of the two servo driving hydraulic cylinders; the position where each servo driving hydraulic cylinder is connected to a corresponding tail chain wheel is provided with a pull and pressure sensor; and a scraper chain tension signal, displacement signals of the two servo driving hydraulic cylinders, and pull and pressure signals of the two servo driving hydraulic cylinders are respectively transmitted to a chain tension balance control module (28), and the chain tension balance control module (28) calculates a control current according to a preset program and outputs a control current to servo valves of the two servo driving hydraulic cylinders. By means of the chain tension balance control system and method for a permanent-magnet-driven mining scraper conveyor, the problem of imbalance between the tension of two scraper chains (5) during the working process of a scraper machine is effectively solved, and meanwhile, the tension distribution condition of the whole scraper chain (5) is monitored in real time, thereby improving the working efficiency.

IPC Classes  ?

• B65G 19/18 - Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors Details
• B65G 19/20 - Traction chains, ropes, or cables
• B65G 43/00 - Control devices, e.g. for safety, warning or fault-correcting