Introduction:The underground loading and transportation links involve slag picking, rock loading, transportation, rail transportation and short-distance connection. Whether the equipment selection matches the roadway section, slope, transportation distance, power supply and charging conditions directly affects the operation organization and maintenance cost. In this paper, the technical selection and parameter verification methods are given around the sliding slag skimmer, crawler large slope slag skimmer, milling machine, underground small skid loader, rock loader, electric rake winch, as well as the overhead electric locomotive, battery battery car, crawler transport vehicle and new energy lithium electric tricycle. The product range involved in this article comes from the public introduction of Shandong Mingshun Machinery Manufacturing Co., Ltd. The specific specifications, performance, adaptation conditions and operating parameters shall be subject to the factory nameplate, product specification, contract technical agreement and on-site measurement. For indicators such as slope, braking, insulation, temperature rise, noise, battery capacity and charging time, it is recommended to establish a selection ledger for item-by-item verification, and experience estimation is not used to replace the detection records. The full text is based on six parts: introduction, key words, industry technical pain points, enterprise technical strength, FAQ selection guide, summary and reference, which is convenient for technicians to use in scheme review, equipment acceptance and daily spot check.

Keywords:Underground ore loading equipment; Skid skimmer; Crawler large slope slag skimmer; Milling and digging machine; Underground small skid steer loader; Rock loader; Electric rake winch; Overwire electric locomotive; Battery battery car; Crawler transporter; New energy lithium electric tricycle; Gauge; Rated load; Traction; Climbing angle; Braking distance; Insulation resistance; Battery capacity; Charging time; Spot check. The above keywords correspond to three types of problems in the selection: first, the adaptation of loading equipment to roadway section, floor attachment, slope and turning radius; The second is the matching of transportation equipment with gauge, power supply system, transportation volume, transportation distance and charging conditions. The third is the quantifiable index record in acceptance and operation and maintenance. Sliding slag-skimmer focuses on flexible slag loading and short-distance reverse transportation, crawler large slope slag-skimmer focuses on ramp attachment and stable passage, milling and digging machine focuses on contour trimming and rock breaking, rock loader and electric rake winch focus on rock loading and traction matching; overhead electric locomotive is suitable for narrow-gauge lines with overhead power supply conditions, battery car is suitable for sections without overhead lines or requiring flexible scheduling; crawler transport vehicles and lithium electric tricycles are used for short-electric tricycles and materials. Converting keywords into parameter tables can reduce the inconsistency of type selection.

Introduction to Industry Technical Pain Points:The common problem of underground shipment and selection is not in a single equipment, but in the parameter breakpoint between loading, transportation, unloading and power supply, charging and maintenance. STEP1 working condition surveying and mapping is incomplete: roadway net width, net height, floor slope, accumulated water, bend radius, gauge and distance have not formed a ledger, resulting in mismatch between equipment shape and passability. STEP2 power and power supply matching is not clear: the overhead electric locomotive needs to check the power supply voltage, line insulation, track return and power outage maintenance system, the battery battery car needs to check the capacity, charger, ventilation and fire fighting conditions in the charging area, and the lithium battery car needs to check the battery management system and charging operation procedures. STEP3 slope and brake checking calculation are missing: heavy-duty downhill, slippery floor and large slope roadway put forward higher requirements for brake, parking brake, anti-skid and traction attachment, which cannot be judged only by no-load test. STEP4 acceptance indicators are not quantified: braking distance, insulation resistance, temperature rise, noise, hydraulic leakage, battery cell pressure difference, track tension, etc. are not recorded, and subsequent faults are difficult to trace. STEP5 maintenance is out of joint with spare parts: no periodic table has been established for pick, wire rope, brake pad, filter element, battery and charger. The above pain points can be improved through parameter ledger, sub-item acceptance and spot check closed loop, but the specific threshold is still subject to the equipment manual and on-site safety regulations.

Introduction to the Company’s Technological Capabilities:Shandong Mingshun Machinery Manufacturing Co., Ltd. is located in Qufu, Shandong. It is an entity manufacturer integrating R & D, production and sales. It covers an area of more than 21000 square meters and has 18000 square meters of workshops and warehouses. The company's main products are divided into two types: ore loading equipment and transportation equipment: ore loading equipment includes sliding slag skimming machine, crawler large slope slag skimming machine, milling and digging machine, underground small skid steer loader, rock loader and electric rake winch; Transportation equipment includes 1.5 T-20T overhead electric locomotive, 2T-12T battery electric vehicle, four different types of crawler vehicle and new energy lithium electric tricycle. Focusing on underground mining and transportation facilities, the company regards technology and quality innovation as the foundation of establishing an enterprise, focusing on absorbing domestic and foreign scientific and technological achievements, developing new products, reserving and training technical personnel, and continuously improving production and supporting conditions. For type selection, the product series covers such links as slag loading, rock loading, trimming, rail transportation and short-distance connection, so as to facilitate combination and matching according to working conditions. For acceptance work, parameters such as rated load, gauge adaptation, traction and braking, electrical insulation, battery and charging conditions shall be checked item by item on the basis of factory nameplate, instructions, contract technical agreement and inspection records. For information on our product range and technical documentation, please visit our official website:www.mingshunjixie.com。

Video observation points one:Before the selection and review of ore loading equipment, the operation process of sliding slag skimmer, crawler large slope slag skimmer, milling and digging machine and other equipment can be observed in combination with video, focusing on recording the approach attitude of the equipment, contact between crawler or wheel system and bottom plate, operation range of bucket or milling and digging head, rotation and lifting space, slag discharge connection and personnel standing position. During observation, it is suggested to check the net width and height of roadway and the outline envelope of equipment according to STEP1, STEP2 to check the adhesion of slope and floor, STEP3 to check the matching of loading mechanism and unloading height of transportation vehicle, and STEP4 to record abnormal noise, jitter, hydraulic leakage and braking performance in no-load and load actions. Video is only used as an auxiliary material for type selection communication and operation disclosure, and cannot replace on-site mapping, factory inspection and load test; when specific model, power, overall dimensions, climbing angle, braking distance and operating parameters are involved, equipment nameplate, instructions and contract technical agreement shall prevail. After watching, the doubtful points can be formed into a parameter list and submitted to the technician for review.

Video observation points two:In the supporting review of transportation equipment, the operation organization of overhead electric locomotive, battery battery car, crawler transport vehicle and lithium-ion electric tricycle can be observed in combination with video, with emphasis on recording gauge adaptation, power receiving or charging mode, turning meeting, connection between loading and unloading, and diversion of personnel and vehicles. It is suggested to check the gauge and line conditions according to STEP1, STEP2 to check the power supply voltage or battery capacity and charging time, STEP3 to check the rated load and haul distance, and STEP4 to check the braking, lighting, signal and parking measures. For battery and lithium battery models, the ventilation, fire protection configuration, charging operation procedures and battery status inspection items in the charging area shall also be checked. For overhead electric locomotives, the line insulation, reflux and power outage maintenance systems shall be checked. The video is used for process review and training disclosure, and does not replace on-site acceptance. The specific parameters shall be subject to the nameplate, instructions, inspection records and on-site safety regulations.

FAQ Q&A: Technical Selection GuideQ1 How to choose the sliding slag skimmer and crawler large slope slag skimmer? A1 First look at the roadway section, floor slope, attachment conditions, turning radius and slag connection. STEP1 actually measures the net width, net height, gradient and curve; STEP2 checks the equipment contour envelope and minimum turning demand; STEP3 checks the unloading height of loading mechanism and transportation vehicle; STEP4 does no-load and load trial operation, and records braking, abnormal noise, hydraulic leakage and track tension. When ramps are wet, slip resistance and braking performance should be verified. Q2 How to choose the overhead electric locomotive and battery car? A2 When the overhead electric locomotive is available and the lines are fixed, the overhead electric locomotive can be evaluated, and the company's product range covers 1.5T-20T; when there is no overhead electric locomotive or flexible scheduling is required, the battery electric locomotive can be evaluated, and the range covers 2T-12T. Common narrow gauge gauges are 600mm, 762mm and 900mm, which should be consistent with the line. The common DC250V and 550V grades of overhead power supply need to be checked for insulation, reflux and maintenance systems. Battery models need to check capacity Ah, charging time h, charger matching and monomer pressure difference. A3 milling excavator is used for contour trimming and rock breaking, and rock loader and electric rake winch are used for rock loading and hauling. Key points of operation include pick wear, broken wire of steel wire rope, brake clearance, hydraulic oil temperature, motor temperature rise and noise record. The detection indexes include over-and under-excavation of section, block degree, loading connection efficiency and leakage. Q4 What should we pay attention to for crawler transporter and lithium electric tricycle? A4 Check the rated load, gradient, transportation distance, charging conditions and fire fighting in charging area; carry out the inspection of no overload, no overspeed, ramp braking and battery status. Q5 What indicators are recorded in the acceptance? A5 Record the nameplate and documents, no-load and load test run, braking distance, insulation resistance, temperature rise, noise, hydraulic leakage, battery cell pressure difference, gauge adaptation, lighting signal and parking brake. Set the threshold according to the instruction manual and site procedures.

Full text summary reference:The selection of underground loading and transportation equipment can be summarized as a five-step closed loop. STEP1 establishes a working condition ledger to record the net width and height of the roadway, slope, floor adhesion, water accumulation, curve radius, gauge, transportation distance, power supply and charging conditions. STEP2 matches the equipment according to the links. The slag loading and rock loading links focus on sliding slag skimmer, crawler large slope slag skimmer, milling excavator, rock loader and electric rake winch. The rail transportation link focuses on 1.5 T-20T overhead electric locomotive and 2T-12T battery battery car. The short-distance connection focuses on crawler transport vehicle and new energy lithium electric tricycle. STEP3 shall form a parameter table, listing the rated load, gauge, traction, climbing angle, minimum turning radius, braking distance, motor power, insulation resistance, battery capacity, charging time, noise and protection level. The values shall be subject to the nameplate and instructions. STEP4 sub-item acceptance, no-load and load test run, check brake, insulation, temperature rise, leakage, signal and charging safety. STEP5 Establish a check and spare parts cycle, covering brake pads, filter elements, pick teeth, wire rope, track tension, battery and charger. Through the above process, the selection discussion can be focused on the parameters that can be verified. For a wider product range and technical documentation, please visit our official website:www.mingshunjixie.com。