[GAO, Zhiming 高志明, HU, Fukai 胡付凯, GUO, Qiang 郭强, GAO, Ben 高奔, SUN, Liaoyuan 孙燎原, TAO, Zhen 陶震, WANG, Cheng 王成, ZHANG, Tao 张涛, YAN, Maochun 闫茂春, SHENG, Dongfang 盛东方, XIE, Jin 谢进] R&D/ GUO Dai 中国上海市奉贤区环城东路168号研发部/郭岱, Shanghai 201401No. 168, Huancheng East Road, Fengxian DistrictShanghai 201401;R&D/ GUO Dai 中国上海市徐汇区天钥桥路1号煤科大厦7楼研发部/郭岱, Shanghai 200030Coal Brancn Building 7th Floor, No. 1, Tianyaoqiao Road, Xuhui DistrictShanghai 200030 A full-section loading mechanism for a boring machine, comprising a main shovel plate (1), a left auxiliary shovel plate and right auxiliary shovel plate (2) which are hinged to vertical edges of the left and right ends of the main shovel plate (1), respectively. A hinge axis extends along the vertical edges of the left and right ends of the main shovel plate. The left auxiliary shovel plate and the right auxiliary shovel plate (2) telescope and are driven by a left swing oil cylinder and a right swing oil cylinder (4) to be unfolded forwards and folded backwards, respectively. A material conveying channel (1-1) which enters forwards and exits backwards is provided in the middle part of the main shovel plate (1). Left and right spiral roller mechanisms (3) are mounted on the left and right sides of an inlet of the material conveying channel (1-1) on the main shovel plate (1), respectively. The spiral conveying direction of the spiral roller mechanisms (3) points toward the inlet of the material conveying channel (101). Said loading mechanism may load materials in a full-section roadway in one instance, is particularly suitable for being applied to short-heading and short-supporting occasions, and ensures that short-heading and short-supporting requirements are met.

[WANG, Zhenqian 王振乾, HU, Jing 胡璟, HU, Tao 胡滔, ZHOU, Changfei 周常飞, DONG, Chao 董超, SONG, Zhen 宋振, LIU, Kunmin 刘昆民, ZHANG, Liqiang 章立强, GU, Enyang 顾恩洋, DING, Haichun 丁海春, HE, Lining 何利宁, MU, Jie 慕杰] R&D/GUO, Dai 中国上海市奉贤区环城东路168号研发部/郭岱, Shanghai 201401NO168, Huancheng East Road, Fengxian District.Shanghai 201401;R&D/GUO, Dai 中国上海市徐汇区天钥桥路1号煤科大厦7楼研发部/郭岱, Shanghai 200030Coal Brancn Building 7th Floor, NO1, Tianyaoqiao Road, Xuhui District.Shanghai 200030 The present invention relates to an automatic cable dragging system for a coal shearer. The space in a cable channel is divided into three layers, namely, an upper layer, a middle layer, and a lower layer, by a layering plate assembly; a cable dragging trolley and a cage rope dragging device have the lower parts limited in the middle layer and can only slide back and forth along the length direction of the cable channel; the cage rope dragging device is fixed relative to a coal shearer; a steel wire rope passes through the cable channel in the length direction thereof; one end of the steel wire rope is wrapped around a fixed pulley at the head of a scraper conveyor to be direction-changed and then connected to the cage rope dragging device, and the other end of the steel wire rope is wrapped around a fixed pulley at the tail of the scraper conveyor to be direction changed and then wrapped around a movable pulley of the cable dragging trolley to be direction changed again to return to the tail and be fixed; a cable clamp plate group has one end connected to the coal shearer, the other end fixed at said head, and the middle part moving around a roller of the cable dragging trolley and passing through the cage along the length direction of the cable channel; the relative positions of said tail and said head can be exchanged. According to the present invention, there is no need to input power from the outside, a guide function is provided, the cable clamp plate group in the upper layer does not fall off, the steel wire rope cannot be thrown out, and good safety is achieved. The present invention relates to an automatic cable dragging system for a coal shearer. The space in a cable channel is divided into three layers, namely, an upper layer, a middle layer, and a lower layer, by a layering plate assembly; a cable dragging trolley and a cage rope dragging device have the lower parts limited in the middle layer and can only slide back and forth along the length direction of the cable channel; the cage rope dragging device is fixed relative to a coal shearer; a steel wire rope passes through the cable channel in the length direction thereof; one end of the steel wire rope is wrapped around a fixed pulley at the head of a scraper conveyor to be direction-changed and then connected to the cage rope dragging device, and the other end of the steel wire rope is wrapped around a fixed pulley at the tail of the scraper conveyor to be direction changed and then wrapped around a movable pulley of the cable dragging trolley to be direction changed again to return to the tail and be fixed; a cable clamp plate group has one end connected to the coal shearer, the other end fixed at said head, and the middle part moving around a roller of the cable dragging trolley and passing through the cage along the length direction of the cable channel; the relative positions of said tail and said head can be exchanged. According to the present invention, there is no need to input power from the outside, a guide function is provided, the cable clamp plate group in the upper layer does not fall off, the steel wire rope cannot be thrown out, and good safety is achieved.

[WANG, Zhenqian, HU, Jing, HU, Tao, ZHOU, Changfei, DONG, Chao, SONG, Zhen, LIU, Kunmin, ZHANG, Liqiang, GU, Enyang, DING, Haichun, HE, Lining, MU, Jie] R&D/Dai Guo No. 168, Huancheng East Road Fengxian District, Shanghai 201401, CN The invention relates to an automatic towing cable system of a coal mining machine. The space in a cable trough is divided into three layers, namely an upper layer, a middle layer and a lower layer, by a dividing plate assembly; lower parts of a towing cable trolley and a constraint cage towing rope device are limited in the middle layer and can only slide in the length direction of the cable trough back and forth; the constraint cage towing rope device is fixed relative to the coal mining machine; a steel wire rope goes through the cable trough in the length direction; one end of the steel wire rope bypasses a fixed pulley at a head-gate end of the cable trough of an AFC (armoured-face conveyor) to change the direction and then is connected with the lower part of the constraint cage towing rope device, and the other end bypasses a fixed pulley at a tail-gate end of the cable trough to change the direction, then bypasses a movable pulley of the towing cable trolley to change the direction again, and returns to the tail-gate end of the cable trough to be fixed; a cable clamp set with one end fixed to the head-gate end of the cable trough extends from the head-gate end of the cable trough to the tail-gate end in the upper layer of the cable trough in the length direction: the cable clamp set firstly goes through the constraint cage of the constraint cage towing rope device and then reaches the location of the towing cable trolley. There the cable clamp set bypasses the roller of the towing cable trolley to change the direction and then extends to a coal mining machine and at last is fixed to the coal mining machine; the head gate and the tail gate which the automatic towing cable system concerned are interchangeable for general layout of the invented system. The invented automatic towing cable system of the coal mining machine has following great advantages: it can guide itself in the cable trough of AFC while the coal mining machine haulages, needs no external input power, the cable clamp set concerned will not fall off from the cable trough any more and the steel wire rope concerned will be prevented from escaping out of the cable trough. Thereby the invented automatic towing cable system is very safe during utilization.＜img id="iaf01" file="imgaf001.tif" wi="74" he="233" img-content="drawing" img-format="tif" /＞

[GAO ZHIMING, HU FUKAI, GUO QIANG, GAO BEN, SUN LIAOYUAN, TAO ZHEN, WANG CHENG, ZHANG TAO, YAN MAOCHUN, SHENG DONGFANG, XIE JIN] CN;CN Abstract The invention relates to a full-face loading mechanism for a roadheader, which comprises a main shovel plate as well as a left auxiliary shovel plate and a right auxiliary shovel plate hinged with vertical edges at left and right ends of the main shovel plate respectively, wherein hinge axes extend along the vertical edges at the left and right ends of the main shovel plate, the left auxiliary shovel plate and the right auxiliary shovel plate unfold forwards and fold backwards under the drive of expansion and contraction of a left swinging cylinder and a right swinging cylinder respectively, a material transport channel with a front inlet and a back outlet is arranged at the middle part of the main shovel plate, a left spiral drum mechanism and a right spiral drum mechanism are mounted on the left side and the right side of the inlet of the material transport channel in the main shovel plate, and spiral transportation of the spiral drum mechanisms points to the inlet of the material transport channel. The full-face loading mechanism for the roadheader is capable of loading a material in a full-face roadway at a time, particularly being applied on occasions needing short heading and short supporting, and ensuring short heading and short supporting requirements are met. Drawings of abstract 1-2 2-1 3

[ZHANG, Liqiang 章立强, ZHOU, Changfei 周常飞, HU, Tao 胡滔, HE, Lining 何利宁, CHEN, Qiaoying 陈峤鹰, SONG, Zhen 宋振, HU, Jing 胡璟, GU, Enyang 顾恩洋, WANG, Zhenqian 王振乾, DONG, Chao 董超, DING, Haichun 丁海春, GUO, Dai 郭岱, QIAN, Liquan 钱立全, YU, Huiting 余会挺, KAN, Wenhao 阚文浩, WU, Zhenyi 吴振毅, YANG, Xi 杨熹, DU, Zunzhong 杜尊重, XU, Jiqiao 许寄桥, ZHU, Chengcai 朱承才, SHEN, Shengchao 沈胜超] R&D/DAI GUO 中国上海市奉贤区环城东路168号研发部/郭岱, Shanghai 201401NO168, Huancheng East Road, Fengxian DistrictShanghai 201401;R&D/DAI GUO 中国上海市徐汇区天钥桥路1号煤科大厦18层研发部/郭岱, Shanghai 200030Coal Brancn Building 18th Floor, NO1, Tianyaoqiao Road, Xuhui DistrictShanghai 200030;R&D/DAI GUO 中国北京市朝阳区和平里青年沟路5号研发部/郭岱, Beijing 100013No.5 Qingnian Gou Road, Hepingli, Chaoyang DistrictBeijing 100013 A coal shearer cutting system, comprising a fixed reduction box (2) and an arm bracket (1). The fixed reduction box (2) comprises a housing (21), and a cutting motor (7) and a front-stage cutting transmission mechanism that are provided in the housing (21). A multi-stage large-reduction-ratio transmission mechanism in which a planetary mechanism (81) and a fixed-axis gear transmission mechanism are combined is adopted for the front-stage cutting transmission mechanism. The arm bracket (1) comprises an arm bracket housing (11) and a rear-stage cutting transmission mechanism. A one-stage small-reduction-ratio fixed-axis gear transmission mechanism is adopted for the rear-stage cutting transmission mechanism. Cores of a front-stage tail gear (82) of the front-stage cutting transmission mechanism and a rear-stage head gear (91) of the rear-stage cutting transmission mechanism are respectively provided with a front-stage spline hole (821) and a rear-stage spline hole (911). A spline sleeve (6) having inner and outer splines is mounted in the front-stage spline hole (821). The inner spline of the spline sleeve (6) and the rear-stage spline hole (911) are respectively linked to front and rear splines of a same spline shaft. The present application can achieve a wide mining range, adapt to mining of low mining high coal seams, and improve the layout of the center of gravity of the entire coal shearer.

[ZHANG, Liqiang, ZHOU, Changfei, HU, Tao, HE, Lining, CHEN, Qiaoying, SONG, Zhen, HU, Jing, GU, Enyang, WANG, Zhenqian, DONG, Chao, DING, Haichun, GUO, Dai, QIAN, Liquan, YU, Huiting, KAN, Wenhao, WU, Zhenyi, YANG, Xi, DU, Zunzhong, XU, Jiqiao, ZHU, Chengcai, SHEN, Shengchao] R&D/Dai Guo No. 168, Huancheng East Road Fengxian District, Shanghai 201401, CN The present invention relates to a cutting system for a coal mining machine, which includes a fixed reduction gearbox and a ranging arm stand. The fixed reduction gearbox includes a housing, a cutting motor and a front-stage cutting drive mechanism. The front-stage cutting drive mechanism is a drive mechanism with a multi-stage large reduction ratio formed by the combination of a planetary mechanism and a fixed-axis gear drive mechanism. The ranging arm stand includes a housing ranging armand a rear-stage cutting drive mechanism. The rear-stage cutting drive mechanism is a one-stage fixed-axis gear drive mechanism with a small reduction ratio. The cores of the front-stage end gear of the front-stage cutting drive mechanism and the rear-stage head gear of the rear-stage cutting drive mechanism are respectively provided with a front-stage spline hole and a rear-stage spline hole. There is a spline sleeve with internal and external splines in the front-stage spline hole. The internal spline in the spline sleeve and the rear-stage spline hole are respectively matched with the front-and-rear splines of the same spline shaft. The present invention can realize a wider mining range, is adaptive to the mining of low-seam coal, and can get the center of gravity of the coal mining machine.＜img id="iaf01" file="imgaf001.tif" wi="78" he="34" img-content="drawing" img-format="tif" /＞

[ZHUANG, Deyu 庄德玉, ZHAO, Guorui 赵国瑞, LIU, Bo 刘博, LIU, Hongrui 刘宏睿, LUO, Kun 罗昆, GUO, Dai 郭岱] GUO, Dai 中国上海市奉贤区环城东路168号研发部/郭岱, Shanghai 201401R&D, No. 168, Huancheng East Road, Fengxian DistrictShanghai 201401;GUO, Dai 中国上海市徐汇区天钥桥路1号煤科大厦18层研发部/郭岱, Shanghai 200030R&D, Coal Brancn Building 7th Floor, No. 1, Tianyaoqiao Road, Xuhui DistrictShanghai 200030;GUO, Dai 中国北京市朝阳区和平里青年沟路5号研发部/郭岱, Beijing 100013R&D, No.5 Qingnian Gou Road, Hepingli, Chaoyang DistrictBeijing 100013 The present invention relates to an online identification method for a broken shaft fault of a rocker arm of a drum coal mining machine. The method comprises: acquiring a real-time three-phase current of a cutting motor of a coal mining machine and real-time data of the traction speed of the coal mining machine, carrying out clock synchronization, and obtaining a sampling time count synchronous with the three-phase current and the traction speed; synchronously calculating the real-time effective three-phase current value of the cutting motor and the change rate of the effective three-phase current value, and the change rate of the traction speed in real time at a fixed time step pitch; according to the three-phase current and the change rate of the effective three-phase current value, determining whether the cutting motor is in a current drop state at the moment; and if it is determined that the cutting motor is in the current drop state, further determining in combination with the change rate of the traction speed, and if a non-broken shaft fault that can cause the current drop state is further eliminated, determining that the broken shaft fault occurs to the rocker arm. According to the present invention, real-time monitoring conditions of the current and the traction speed of the existing cutting motor can be utilized, and a broken shaft fault can be efficiently and accurately identified without adding a hardware device.

[ZHUANG DEYU, ZHAO GUORUI, LIU BO, LIU HONGRUI, LUO KUN, GUO DAI] CN;CN Abstract The present invention relates to an online identification method for the fault of drive shaft fracture in the rocker arm of a drum-type shearer, including obtaining the shearer cutter motor\'s real-time three-phase current as well as the shear\'s real-time haulage speed to achieve clock synchronization and obtain the sampling time data synchronous to the three-phase current and the haulage speed; calculating the real-time effective value of three-phase current of the cutter motor and its change rate as well as the change rate of the haulage speed with a fixed time step in real time and synchronously; judging whether the cutter motor is in the current drop state at this time according to the change rate of the three-phase current and the effective value of the same; making an judgment by combining the change rate of the haulage speed when it is determined that the cutter motor is in the current drop state, and further, judging that the fault of drive shaft fracture in the rocker arm has occurred if the fault other than drive shaft fracture that may result in the current drop state is further ruled out. The present invention can identify the fault of drive shaft fracture efficiently and accurately through the real-time monitoring conditions for the existing cutter motor current and haulage speed, without adding any hardware device. (Fig. 1)

[ZHUANG DEYU, ZHAO GUORUI, LIU BO, LIU HONGRUI, LUO KUN, GUO DAI] CN;CN Abstract The present invention relates to an online identification method for the fault of drive shaft fracture in the rocker arm of a drum-type shearer, including obtaining the shearer cutter motor\'s real-time three-phase current as well as the shear\'s real-time haulage speed to achieve clock synchronization and obtain the sampling time data synchronous to the three-phase current and the haulage speed; calculating the real-time effective value of three-phase current of the cutter motor and its change rate as well as the change rate of the haulage speed with a fixed time step in real time and synchronously; judging whether the cutter motor is in the current drop state at this time according to the change rate of the three-phase current and the effective value of the same; making an judgment by combining the change rate of the haulage speed when it is determined that the cutter motor is in the current drop state, and further, judging that the fault of drive shaft fracture in the rocker arm has occurred if the fault other than drive shaft fracture that may result in the current drop state is further ruled out. The present invention can identify the fault of drive shaft fracture efficiently and accurately through the real-time monitoring conditions for the existing cutter motor current and haulage speed, without adding any hardware device. (Fig. 1)

[ZHANG BIN, HU JUN, HUANG QIULAI, ZHU XINPING, ZHANG XIAOYONG, LIU KAI, WANG GUANG, LI HUI, JIA SIRAN, HU TAO, HE XINXING, LV RUILIN, CAO YANG, GUO DAI, EN JIANFENG, FANG XING] CN Abstract The present invention relates to an apparatus and method for accurately monitoring an angle of an arm of a coal mining shearer. The apparatus for accurately monitoring the angle includes an arm pulley, a machine body pulley, a synchronous belt, a fixed 5 shaft and a rotation angle sensor, where the arm pulley is mounted on the arm of the coal mining shearer; a rotation central axis of the arm pulley is coaxial with a swing center line of the arm; the fixed shaft is mounted on a coal mining shearer body; the machine body pulley is rotationally supported on the fixed shaft; the rotation angle sensor is coaxially mounted relative to the machine body pulley; a diameter of the arm 10 pulley is larger than that of the machine body pulley; and the synchronous belt is wrapped around the arm pulley and the machine body pulley, so that the arm pulley and the machine body pulley rotate at a same linear speed. The method for accurately monitoring the angle implements monitoring by using the apparatus for accurately monitoring the angle. The present invention can solve the problems of low mining 15 height detection accuracy and poor reliability of the coal mining shearer.