تلتزم الشركة دائمًا بمعدات سحق التعدين ومعدات صنع الرمل ومعدات الطحن الصناعية، وتوفير حلول عالية الجودة للرمل والحصى ومجموعات كاملة من المعدات للمشاريع الهندسية واسعة النطاق مثل الطرق السريعة والسكك الحديدية والمياه والكهرباء، إلخ. ، وتسعى جاهدة لممارسة التصنيع الدقيق المحلي والتخطيط العلمي العالمي، مع اعتبار آسيا المنطقة النائية والعملاء المشعين حول العالم. بعد أكثر من 30 عامًا من التطوير، نجحت العديد من منتجات الشركة في اجتياز العديد من شهادات الجودة الدولية مثل الشهادة الدولية ISO9001:2015، وشهادة الاتحاد الأوروبي CE، وشهادة GOST الروسية. بعد ذلك، في السعي لتحقيق التميز، سنستمر في استخدام منتجات عالية الجودة والتكنولوجيا الاحترافية والخدمات المخلصة لمساعدة العملاء على خلق قيمة أكبر، واستخدام الإجراءات العملية لمواصلة تعزيز البناء البيئي للحضارة الإنسانية.
·The material specification and acceptance testing for the supply of railway ballast should be based on AS2758 "Aggregates and rock for engineering purposes Part 7 Railway Ballast" The scheduled inspection of ballast shall incorporate the guidelines prescribed in Table and as follows a Patrol Inspection
Julkaisun otsikon käännös Inspection of railway ballast quality using GPR in Finland Alkuperäiskieli Englanti Otsikko 9th International Heavy Haul Conference Shanghai China June 22 25 2009
·Railway Board vide letter No 2013/CE II/TK/IRPWM dated 24/09/2019 asked IRICEN to redraft IRPWM with a view to remove obsolete topics and material components which are not in use now and make it for only Broad Gauge by adding recent developments BALLAST 211 Ballast Specifications 212 Ballast Profile/Section/Depth of Cushion 213
·Ballast layer defect is the key reason for rapid track geometry degradation Identifying the ballast layer defects in real time track inspections is urgently demanded for safe railway operation
·The development of a new 400 MHz horn antenna for railways ballast and subsoil inspection was additionally triggered by the availability of new GPR control units like the GSSI SIR 20 These units allow data collection rates of several hundred scans per second with a time resolution of 5 picoseconds for 512 or 1024 samples per scan Using the
·Ground Penetrating Radar GPR is widely used for railway ballast beds inspection and evaluation owing to its high speed and non destructive characteristics However GPR image data contain considerable noise and the distinct shapes and sizes of each ballast bed defect renders it challenging to apply a unified data annotation standard which
·Infrared thermographic inspection of railway ballast was undertaken by Clark et al [15 16] Hwang and Park [17] presented a surface wave approach depending on the harmonic wavelet analysis to identify the condition of the ballast layer as indicated by its shear wave velocity Multi channel analysis of surface waves was also used for ballast
·Ballast fouling occurs when the voids of granular particles are wholly or partially filled by fine particles Railway ballast fouling is always an inevitable issue related to railway performance and safety in ballasted tracks This paper presents an overview of the railway ballast fouling mechanism current works perspective and innovation
·The track geometry degradation rate is obtained by analysing track geometry data from the 2 times/month inspection using inspection train The ballast layer health classification BLHC was
·Historically the traditional methods of inspecting ballast are by a visual inspection which is subjective; b use of trial pits which is expensive and intrusive requiring track possession Improvement of railway ballast maintenance approach incorporating ballast geometry and fouling conditions 2018 Journal of Applied
·In the past 20 years researchers worldwide have carried out many in depth studies on ballast layer inspection along with the improvement in railway inspection technology and equipment [60][61][62
·1 Introduction Ballast bed is the foundation of ballasted track for conventional railway and high speed railway with a speed of 200 250 km/h Ye Cai Zhang Wei & Yan 2021 With the increase of service time and the gross traffic tonnage of a line ballast bed will gradually deteriorate which undermines its elasticity and drainage performance and frequent
·Railway ballast fouling inspection and solutions A review Railway ballast fouling inspection and solutions A review Liu Guixian; Yang Fei; Wang Shilei; Jing Guoqing; Nateghi Yekta 2022 01 01 00 00 00 Ballast fouling occurs when the voids of granular particles are wholly or partially filled by fine particles Railway ballast fouling is always an inevitable issue
·Ground Penetrating Radar GPR is widely used for railway ballast beds inspection and evaluation owing to its high speed and non destructive characteristics However GPR image data contain considerable noise and the distinct shapes and sizes of each ballast bed defect renders it challenging to apply a unified data annotation standard which
· Problems with Ballast Although slab tracks have developed rapidly in recent decades ballasted tracks are still the main track type for all kinds of transportation high speed railways heavy haul railways metros etc [1 2] In particular ballasted tracks are also the main track type for general speed railways at speeds of 200 250 km/h in China [3 4]
Deep Learning for Railroad Inspection Phase 2 Authors Richard Fox Ivey Mario Talbot John Laurent Pavemetrics Abstract This paper builds on prior work Deep Learning for Railroad Inspection Phase 1 to develop a Deep Neural Network that can automatically identify key railway components as a step in the process of automating rail inspection in an effort to
·Railway ballast layer inspection with different GPR antennas and Go to citation Crossref Google Scholar Data driven methods to predict track degradation A case study Go to citation Crossref Google Scholar Assessment of ballast layer
·The implemented optimized VMD algorithm was chosen to calculate the modes of the original nonlinear GPR signal of railway ballast collected in Huntington WV in Feb 2022 by 400 MHz air coupled antennas and the Hilbert transform was chosen to compute the instantaneous frequency of the decoupled modes Based on the inspection the existing
·GPR is a newer method that has gained acceptance in the past decade for ballast inspection GPR assesses the ballast condition by processing radar wave reflections that are emitted by antennae with a frequency Evaluation of Railway Ballast Permeability Using Machine Vision Based Degradation Analysis Transportation Research Record Journal
·ABSTRACT Ground penetrating radar GPR has been applied for ballast layer inspection for two decades mainly for the analysis of ballast layer fouling levels However some issues that affect the inspection quality remain unsolved such as issues involving the GPR equipment quality antenna and the correlation between the GPR indicator and fouling index