[XIE, Heping 谢和平, ZHANG, Yapeng 张亚鹏, ZHANG, Liang 张亮, YANG, Xuhui 杨旭辉, LI, Bin 李斌, FANG, Kangning 房康宁, ZHANG, Li 张莉, MAO, Jiasong 毛家松, YU, Zhenhua 于振华, WANG, Guan 王冠, CHU, Fuyang 褚福阳] {No.169 Hepingdadao Road, Economic And Technological Development Zone 中国江苏省徐州市经济技术开发区和平大道169号, Jiangsu 221100Xuzhou, Jiangsu 221100;CN CN(CN)(CN)} Disclosed in the present invention are an adaptive control system and method for the slope-climbing torque of a mining mechanical-transmission dumper. The method comprises the following steps: acquiring and analyzing signal data of a tilt angle sensor and of an accelerator pedal, and determining whether a dumper is in a slope-climbing state; if the dumper is in a slope-climbing state, then acquiring and analyzing signal data of suspension pressure sensors and a rotation speed sensor, and performing calculation to obtain traction forces and resistances which correspond to different gear speed ratios of a gearbox; if a traction force corresponding to the highest gear speed ratio of the gearbox is greater than or equal to a resistance corresponding thereto, then not entering a slope-climbing torque adaptive-control mode, and not sending a gear-limiting instruction to a gearbox controller; and if the traction force corresponding to the highest gear speed ratio of the gearbox is less than the resistance corresponding thereto, then entering the slope-climbing torque adaptive-control mode, and sending a gear-limiting instruction to the gearbox controller. The present invention realizes adaptive control over the slope-climbing torque of a dumper, effectively eliminates the effect of improper manual operations on the power performance, the transportation efficiency and the driving safety of a vehicle, and has great practicability. Disclosed in the present invention are an adaptive control system and method for the slope-climbing torque of a mining mechanical-transmission dumper. The method comprises the following steps: acquiring and analyzing signal data of a tilt angle sensor and of an accelerator pedal, and determining whether a dumper is in a slope-climbing state; if the dumper is in a slope-climbing state, then acquiring and analyzing signal data of suspension pressure sensors and a rotation speed sensor, and performing calculation to obtain traction forces and resistances which correspond to different gear speed ratios of a gearbox; if a traction force corresponding to the highest gear speed ratio of the gearbox is greater than or equal to a resistance corresponding thereto, then not entering a slope-climbing torque adaptive-control mode, and not sending a gear-limiting instruction to a gearbox controller; and if the traction force corresponding to the highest gear speed ratio of the gearbox is less than the resistance corresponding thereto, then entering the slope-climbing torque adaptive-control mode, and sending a gear-limiting instruction to the gearbox controller. The present invention realizes adaptive control over the slope-climbing torque of a dumper, effectively eliminates the effect of improper manual operations on the power performance, the transportation efficiency and the driving safety of a vehicle, and has great practicability.

[SUN, Wenqing 孙文庆, SHI, Jijiang 史继江, QIN, Jiasheng 秦家升, SHI, Lijing 石立京, LI, Shoupeng 李寿鹏, LV, Jiansen 吕建森, WANG, Zhenghua 王正华] No.39 Gaoxin Road, Economic and Technological Development Zone 中国江苏省徐州市经济技术开发区高新路39号, Jiangsu 221000Xuzhou, Jiangsu 221000 A hydraulic system for achieving a sequential operation of an engineering vehicle mechanism, comprising: an electric motor (1), a hydraulic pump (2), an electromagnetic reversing valve (3), a sequence valve I (4), a hydraulic execution element I, a sequence valve II (6), and a hydraulic execution element II. The electric motor is connected to the hydraulic pump. The hydraulic pump outputs oil to drive, by means of the electromagnetic reversing valve, the hydraulic execution element I and the hydraulic execution element I to operate. The sequence valve I is connected in series between a large cavity oil port of the hydraulic execution element I and an oil port hydraulic circuit of the electromagnetic reversing valve. The sequence valve II is connected in series between the large cavity oil port of the hydraulic execution element II and the oil port hydraulic circuit of the electromagnetic reversing valve. An electric control portion of the hydraulic system merely needs to control one electromagnetic reversing valve, and the remaining portions are controlled by a hydraulic pressure, so as to achieve sequentiality of movements and control of a speed. The present invention is safe, stable, reliable, low-cost, and suitable for popularization and promotion. Also disclosed are a working method of the hydraulic system and an engineering vehicle comprising the hydraulic system.

[MA, Ruiyong 马瑞永, YANG, Yufeng 杨裕丰, DING, Yuejin 丁跃进, WANG, Yong 王勇, LI, Pengfei 李鹏飞, ZHANG, Zhiyang 张志洋, GUO, Zhonghua 郭中华, WANG, Cunzhen 王存珍, SONG, Xuexue 宋雪雪] No.39 Gaoxin Road, Economic and Technological Development Zone 中国江苏省徐州市经济技术开发区高新路39号徐州徐工矿业机械有限公司, Jiangsu 221000Xuzhou, Jiangsu 221000 An excavator boom and an excavator. The excavator boom comprises a curved compartment, a front boom fork (1), a boom root bearing seat (6), and an inner vertical plate (10). The curved compartment consists of a left side plate (2), a right side plate (3), an upper sealing plate (4), and a lower sealing plate (5). The front boom fork (1) is connected to an opening at a front end of the curved compartment. The boom root bearing seat (6) is connected to an opening at a rear end of the curved compartment. The inner vertical plate (10) is connected to a position within the curved compartment. A front fork center structure is provided at a front end of the inner vertical plate (10), and a rear fork center structure is provided at a rear end of the inner vertical plate (10). The inner vertical plate (10) is combined with the front fork center structure and the rear fork center structure to form an X-shaped bifurcation structure. A front surface and a rear surface of the X-shaped bifurcation structure are respectively connected to the front boom fork (1) and the root bearing seat (6). A front upper surface and a front lower surface of the X-shaped bifurcation structure are respectively connected to the upper sealing plate (4) and the lower sealing plate (5). The internal structure of the boom ensures that a load transfer on the boom is even, optimizes a stress level resistance in the boom, reduces the weight of the boom, and reduces usage costs, manufacturing costs, and manufacturing difficulty.

[QU, Lihong 渠立红, YANG, Yufeng 杨裕丰, DING, Yuejin 丁跃进, WANG, Yong 王勇, LIU, Yongcan 刘永参, JIAO, Qing 焦青, WANG, Ranran 王冉冉, ZHANG, Yaxiong 张亚雄, WU, Qingli 吴庆礼, WANG, Chunlei 王春磊, FU, Guishan 付桂山, WEN, Jun 文俊, WANG, Yunxian 汪允显, ZHANG, Yi 张怡, ZHANG, Congcong 张聪聪] QuLihong 中国江苏省徐州市经济技术开发区高新路39号渠立红, Jiangsu 221000No.39 Gaoxin Road, Economic And Technological Development ZoneXuzhou, Jiangsu 221000 An engineering machinery crawler and an engineering vehicle. The engineering machinery crawler comprises multiple crawler plates (1) which are sequentially connected and form a closed loop; the crawler plate (1) comprises a support portion, a body portion, and a traction portion; the support portion comprises a base plate (120), a raceway surface (106), and a guide block (114); the body portion is connected to the base plate (120), multiple cavities (123, 125) are provided in the body portion, and the contours on two sides of the body portion are matched with pin lugs (102, 103, 104) in adjacent crawler plates; the traction portion is connected onto the body portion, and the traction portion comprises a tooth (11) and multiple protruding pin lugs (102, 103, 104). Under the condition that the requirement for same machine weight supporting and driving is satisfied, the crawler can provide continuous support for a thrust wheel, the contact stress is smaller, the overall casting process is better, and the overall weight is lighter; the flexibility and maneuverability of a whole machine can be improved under the condition of guaranteeing the reliability. An engineering machinery crawler and an engineering vehicle. The engineering machinery crawler comprises multiple crawler plates (1) which are sequentially connected and form a closed loop; the crawler plate (1) comprises a support portion, a body portion, and a traction portion; the support portion comprises a base plate (120), a raceway surface (106), and a guide block (114); the body portion is connected to the base plate (120), multiple cavities (123, 125) are provided in the body portion, and the contours on two sides of the body portion are matched with pin lugs (102, 103, 104) in adjacent crawler plates; the traction portion is connected onto the body portion, and the traction portion comprises a tooth (11) and multiple protruding pin lugs (102, 103, 104). Under the condition that the requirement for same machine weight supporting and driving is satisfied, the crawler can provide continuous support for a thrust wheel, the contact stress is smaller, the overall casting process is better, and the overall weight is lighter; the flexibility and maneuverability of a whole machine can be improved under the condition of guaranteeing the reliability.

[BROWN, Lain Giles 布朗伊恩·贾尔斯, ZHANG, Jieshan 张杰山, FENG, Handui 冯汉队] {No.169 Hepingdadao Road, Economic And Technological Development Zone 中国江苏省徐州市经济技术开发区和平大道169号, Jiangsu 221100Xuzhou, Jiangsu 221100;CN CN(CN)(CN)} Disclosed in the present invention are a hinge device assembly and a locomotion machine. The hinge device assembly comprises a hinge body, a tubular shaft, a transmission shaft, a bearing seat, a thrust ring, and a locking plate; the tubular shaft extends from the hinge body; the transmission shaft is rotatably supported in the tubular shaft; the bearing seat is mounted at the end portion of the tubular shaft opposite to the hinge body; the thrust ring is located at the tail end of the tubular shaft opposite to the hinge body, is configured to be directly screwed onto the outer diameter of the bearing seat, and is further provided with a plurality of first interlocking components; the locking plate is provided with second interlocking components matching the geometrical shapes of the first interlocking components to achieve interlocking, is used for rotating to adjust the relative position of the thrust ring and keeping the position of the adjusted thrust ring, and functions as a support when the thrust ring is loaded. According to the present invention, the locking plate is used for supporting the whole thrust surface to achieve easier maintenance and adjustment, and can counteract a resultant thrust and bear heavy loads. The locking plate further has a geometrical shape, so that the thrust ring can be adjusted under the condition that the locking plate does not need to be detached and repositioned, and only fasteners of the locking plate fastener need to be detached.

[XIE, Heping 谢和平, ZHANG, Xiumei 张秀梅, YANG, Xuhui 杨旭辉, ZHANG, Liang 张亮, CHU, Fuyang 褚福阳, ZHANG, Duanliao 张端燎, WANG, Jian 王健, LV, Jie 吕捷, REN, Lisheng 任立圣, NING, Ran 宁冉] No.169 Hepingdadao Road, Economic And Technological Development Zone 中国江苏省徐州市经济技术开发区和平大道169号, Jiangsu 221100Xuzhou, Jiangsu 221100 Disclosed in the present invention are a rear axle brake fixed-point fire extinguishing monitoring system for an electric-transmission dumper, a method and an electric-transmission dumper. The system comprises a rear axle housing, an infrared flame detector, an automatic positioning and spraying device and a rear axle brake. The infrared flame detector, the automatic positioning and spraying apparatus and the rear axle brake are all installed in the rear axle housing. The infrared flame detector is arranged above the rear axle brake, monitors the flame condition around the brake all the time, and gives an alarm in time in the initial stage of fire. The automatic positioning and spraying device is arranged in the middle of the rear axle brake, and when a fire occurs, can precisely detect an ignition point and perform spraying fire extinguishing. The present invention has the advantages of precise positioning of ignition points and efficient fire extinguishing.

[XIE, Heping 谢和平, ZHANG, Liang 张亮, LI, Bin 李斌, YANG, Xuhui 杨旭辉, FENG, Handui 冯汉队, ZHANG, Yapeng 张亚鹏, ZHANG, Li 张莉, CHU, Fuyang 褚福阳, FANG, Kangning 房康宁, WANG, Guan 王冠, GU, Chengpeng 顾程鹏] No.169 Hepingdadao Road, Economic And Technological Development Zone 中国江苏省徐州市经济技术开发区和平大道169号, Jiangsu 221100Xuzhou, Jiangsu 221100 The present invention relates to a mining dump truck converter drive control system and algorithm, and belongs to the technical field of engineering machinery. The control system is composed of an engine, a synchronous generator, a rectifier, an excitation controller, a resistor grid, an inverter 1, an inverter 2, an alternating current asynchronous motor 1 and an alternating current asynchronous motor 2; the engine is coaxially connected to the synchronous generator; after a three-phase alternating current output by the excitation controller is rectified by the rectifier, the asynchronous motors are controlled through the inverters, and the resistor grid is connected to the rectifier. The algorithm utilizes a full-speed-domain high-performance vector control strategy, adopts full-speed-domain flux linkage observation and high-performance current decoupling control for the alternating current asynchronous motors, and, based on a maximum torque flux-weakening control strategy, carries out electric driving system joint optimization control based on working condition recognition. The invention gives a vehicle excellent speed control and more comfortable and stable driving, and enhances the operating performance of the mining dump truck. The present invention relates to a mining dump truck converter drive control system and algorithm, and belongs to the technical field of engineering machinery. The control system is composed of an engine, a synchronous generator, a rectifier, an excitation controller, a resistor grid, an inverter 1, an inverter 2, an alternating current asynchronous motor 1 and an alternating current asynchronous motor 2; the engine is coaxially connected to the synchronous generator; after a three-phase alternating current output by the excitation controller is rectified by the rectifier, the asynchronous motors are controlled through the inverters, and the resistor grid is connected to the rectifier. The algorithm utilizes a full-speed-domain high-performance vector control strategy, adopts full-speed-domain flux linkage observation and high-performance current decoupling control for the alternating current asynchronous motors, and, based on a maximum torque flux-weakening control strategy, carries out electric driving system joint optimization control based on working condition recognition. The invention gives a vehicle excellent speed control and more comfortable and stable driving, and enhances the operating performance of the mining dump truck.

[WANG, Daoming 王道明, ZHANG, Jieshan 张杰山, QIN, Hongyi 秦红义, QIAO, Kuipu 乔奎普, TANG, Zhiming 汤治明] No.39 Gaoxin Road, Economic and Technological Development Zone 中国江苏省徐州市经济技术开发区高新路39号, Jiangsu 221000Xuzhou, Jiangsu 221000 Disclosed is a tilting truck bed, comprising: a bed body (100) for carrying materials, wherein the bed body (100) comprises a bottom plate I (6), and a front plate (2), a tail board (8), a left side plate (10) and a right side plate (3) welded to upper edges of the bottom plate I; lifting supports (18), symmetrically mounted on the tail board, and used for being articulated to a truck frame (200) to realize the tilting of the bed body; shock absorber supports (300), symmetrically mounted on two sides of the front of the bottom plate I, with each shock absorber support (300) comprising a shock absorber support body and a clearance adjusting device, and the clearance between same and the truck frame (200) being adjusted by the clearance adjusting device, thereby effectively controlling the lateral displacement of the truck bed during the driving of the truck and having a lateral limiting function; and damping pad assemblies (400) installed on the shock absorber supports (300) to reduce the impact of the falling of the truck bed on the truck frame. Disclosed is a tilting truck bed, comprising: a bed body (100) for carrying materials, wherein the bed body (100) comprises a bottom plate I (6), and a front plate (2), a tail board (8), a left side plate (10) and a right side plate (3) welded to upper edges of the bottom plate I; lifting supports (18), symmetrically mounted on the tail board, and used for being articulated to a truck frame (200) to realize the tilting of the bed body; shock absorber supports (300), symmetrically mounted on two sides of the

[XIE, Heping 谢和平, ZHANG, Liang 张亮, GU, Chengpeng 顾程鹏, ZHANG, Chao 张超, FANG, Kangning 房康宁, ZHANG, Li 张莉, ZHANG, Yapeng 张亚鹏, WANG, Guan 王冠, LI, Bin 李斌, MAO, Jiasong 毛家松, YU, Zhenhua 于振华, CHU, Fuyang 褚福阳] Xie Heping 中国江苏省徐州市经济技术开发区和平大道169号谢和平, Jiangsu 221000No.169 Hepingdadao Road, Economic And Technological Development ZoneXuzhou, Jiangsu 221000 The present invention relates to the technical field of power systems for engineering machinery. Disclosed is a hybrid power system for a mining dump truck. The hybrid power system comprises a generator and a 24V storage battery; the generator is in control connection with a traction motor; the generator is connected to a rectifier module; the rectifier module is connected to an inverter module, and an energy storage battery is connected in a circuit from the rectifier module to the inverter module; the inverter module is connected to the traction motor; a shore power charging interface is connected to a filter, and the filter is connected to the rectifier module. According to the present invention, the braking energy of the traction motor is fully utilized to charge the energy storage battery, and during traction, the energy of the energy storage battery can be fully utilized to provide power, thereby reducing carbon emission; when the generator is abnormal, the energy of the energy storage battery can enable the vehicle to run to a maintenance shop as soon as possible, without traction of other vehicles; and when the air temperature is low and 24V storage battery feeding occurs during duty shift of mining cars, resulting in that the vehicle cannot be started, such problems can be avoided by means of a photovoltaic cell panel. The present invention relates to the technical field of power systems for engineering machinery. Disclosed is a hybrid power system for a mining dump truck. The hybrid power system comprises a generator and a 24V storage battery; the generator is in control connection with a traction motor; the generator is connected to a rectifier module; the rectifier module is connected to an inverter module, and an energy storage battery is connected in a circuit from the rectifier module to the inverter module; the inverter module is connected to the traction motor; a shore power charging interface is connected to a filter, and the filter is connected to the rectifier module. According to the present invention, the braking energy of the traction motor is fully utilized to charge the energy storage battery, and during traction, the energy of the energy storage battery can be fully utilized to provide power, thereby reducing carbon emission; when the generator is abnormal, the energy of the energy storage battery can enable the vehicle to run to a maintenance shop as soon as possible, without traction of other vehicles; and when the air temperature is low and 24V storage battery feeding occurs during duty shift of mining cars, resulting in that the vehicle cannot be started, such problems can be avoided by means of a photovoltaic cell panel.

[XIE, Heping 谢和平, FANG, Kangning 房康宁, LI, Zhipeng 李志鹏, ZHANG, Liang 张亮, WANG, Guan 王冠, YU, Zhenhua 于振华, RUAN, Jilian 阮计连, LIU, Kai 刘凯, ZHANG, Li 张莉, LI, Bin 李斌] No.169 Hepingdadao Road, Economic And Technological Development Zone 中国江苏省徐州市经济技术开发区和平大道169号, Jiangsu 221100Xuzhou, Jiangsu 221100 A dual-source powered mining truck transportation system and a heavy-duty electrical drive mining truck. The dual-source powered mining truck transportation system comprises a dual-source power supply system, a transformer substation (2), an overhead line system (4), an on-board pantograph, an on-board power system, and an on-board electrical drive system; the dual-source power supply system is connected to the transformer substation (2); the transformer substation (2) is connected to the overhead line system (4) by means of a catenary cable (3); the overhead line system (4) is connected to the on-board pantograph; the on-board pantograph, the on-board power system and the on-board electrical drive system are sequentially connected; and the dual-source power supply system comprises a solar power supply system and a power grid power supply system. In the dual-source powered mining truck transportation system, a certain range of contact force is kept between the on-board pantograph and a contact line, ensuring that the height of the on-board pantograph can be actively adjusted according to a truck running condition, so as to ensure stable and reliable pantograph-catenary contact; and the on-board power system can use a power battery, and the battery can be charged simultaneously during an overhead cabling phase, prolonging the life of the battery, and effectively reducing the load rate and the energy consumption ratio of an on-board power source. A dual-source powered mining truck transportation system and a heavy-duty electrical drive mining truck. The dual-source powered mining truck transportation system comprises a dual-source power supply system, a transformer substation (2), an overhead line system (4), an on-board pantograph, an on-board power system, and an on-board electrical drive system; the dual-source power supply system is connected to the transformer substation (2); the transformer substation (2) is connected to the overhead line system (4) by means of a catenary cable (3); the overhead line system (4) is connected to the on-board pantograph; the on-board pantograph, the on-board power system and the on-board electrical drive system are sequentially connected; and the dual-source power supply system comprises a solar power supply system and a power grid power supply system. In the dual-source powered mining truck transportation system, a certain range of contact force is kept between the on-board pantograph and a contact line, ensuring that the height of the on-board pantograph can be actively adjusted according to a truck running condition, so as to ensure stable and reliable pantograph-catenary contact; and the on-board power system can use a power battery, and the battery can be charged simultaneously during an overhead cabling phase, prolonging the life of the battery, and effectively reducing the load rate and the energy consumption ratio of an on-board power source.