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公开(公告)号：US10422709B2
公开(公告)日：2019-09-24
申请号：US15548126
申请日：2016-12-02
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Zhencai Zhu , Wei Li , Xing Zhang , Jiang Fan , Gongbo Zhou , Yuxing Peng , Guohua Cao
Abstract: Disclosed is a method for estimating tension of a chain of a scraper conveyor, belonging to a method for estimating chain tension. The method comprises the following steps: embedding strain sensors in a plurality of scrapers of a scraper conveyor to measure the tension of weak coupling points between the scrapers and chains, converting acquired sensor signals into data signals through an A/D conversion unit, transmitting the data signals to a data control center using a wireless transmission module, further processing the tension data information of the weak coupling points through the data control center, establishing a chain tension distribution model, and determining an the estimated tension of the chain of the scraper conveyor. The method provided by the present invention is simple, efficient and practical, and the estimation of tension of the whole continuous moving chain is completed by the tension measurement at limited positions of the chain. The chain of the scraper conveyor is meshed with a sprocket and continuously moves in a middle trough and its tension also changes in real time along with the load; the strain sensors are arranged on the scrapers to measure the tension of the weak coupling points between the scrapers and the chains, and the estimation of tension of the whole chain is completed by tension measurement at limited positions on the chain.
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公开(公告)号：US20180155132A1
公开(公告)日：2018-06-07
申请号：US15558768
申请日：2015-12-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wei Li , Xing Zhang , Zhencai Zhu , Mingquan Qiu , Yong Ren , Gongbo Zhou , Yuxing Peng , Guohua Cao
CPC classification number: B65G43/02 , B65G19/18 , B65G2201/04 , B65G2203/0275 , B65G2203/044 , E21F13/066 , G01B11/026 , G01B11/14 , G01B2210/58 , G01S17/08 , G01S17/88
Abstract: A fracture detection system and method for a dumbbell pin of a scraper conveyor. The system comprises a scraper conveyor, a wireless ranging apparatus (2), a wireless communication device, a support controller and a monitoring center. The wireless ranging apparatus (2) is mounted on a ramp plate ledge of a scraper conveyor chute (1), and has a laser range finder and a reflection target plate (24) for detecting a relative displacement between any two adjacent chutes. The wireless communication device realizes communication between the wireless ranging apparatus (2) and the support controller, and transmits the displacement of the laser range finder to the support controller in a wireless transmission manner. The support controller controls an action of the scraper conveyor chute (1). A monitoring center is electrically connected to the support controller, and can perform storage processing on relative displacement data of any adjacent chutes. In the method, by taking a relative displacement value between adjacent chutes as a reference, whether a fracture fault occurs in a dumbbell pin is judged, the position of the fractured dumbbell pin can be accurately determined, and a support controller controls a chute action, thereby having a high promotion and usage value.
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公开(公告)号：US10273091B2
公开(公告)日：2019-04-30
申请号：US15558768
申请日：2015-12-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wei Li , Xing Zhang , Zhencai Zhu , Mingquan Qiu , Yong Ren , Gongbo Zhou , Yuxing Peng , Guohua Cao
IPC: B65G43/02 , B65G45/12 , B65G45/00 , E21F13/06 , G01B11/14 , G01S17/08 , G01S17/88 , G01B11/02 , B65G19/18
Abstract: A fracture detection system and method for a dumbbell pin of a scraper conveyor. The system comprises a scraper conveyor, a wireless ranging apparatus (2), a wireless communication device, a support controller and a monitoring center. The wireless ranging apparatus (2) is mounted on a ramp plate ledge of a scraper conveyor chute (1), and has a laser range finder and a reflection target plate (24) for detecting a relative displacement between any two adjacent chutes. The wireless communication device realizes communication between the wireless ranging apparatus (2) and the support controller, and transmits the displacement of the laser range finder to the support controller in a wireless transmission manner. The support controller controls an action of the scraper conveyor chute (1). A monitoring center is electrically connected to the support controller, and can perform storage processing on relative displacement data of any adjacent chutes. In the method, by taking a relative displacement value between adjacent chutes as a reference, whether a fracture fault occurs in a dumbbell pin is judged, the position of the fractured dumbbell pin can be accurately determined, and a support controller controls a chute action, thereby having a high promotion and usage value.
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公开(公告)号：US10207874B2
公开(公告)日：2019-02-19
申请号：US15525284
申请日：2015-12-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wei Li , Xing Zhang , Zhencai Zhu , Mingquan Qiu , Yong Ren , Gongbo Zhou , Yuxing Peng , Guohua Cao
Abstract: Provided is a breakage detection system and method for a scraper conveyor, wherein a speed measurement device of the detection system and a sprocket assembly of the scraper conveyor are coaxially installed. Encoders are installed on speed measurement gears of the speed measurement device. An output end of the speed measurement device is connected to an input end of a programmable logic controller (PLC). An output end of the PLC is electrically connected to an automatic alarm device and a digital display module. A power supply module is used for supplying power to the whole system.
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