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1482results about "Ballastway" patented technology

Analog quantity display method, analog quantity measuring method, and digital/analog display type measuring instrument

The present invention provides an analog quantity display method of counting displacement of a probe disposed in contact with an object to be measured and analog-displaying the obtained count value by an analog display section as an analog quantity. If a peak value of the count value exceeds a possible analog-display range of the analog display section, an offset provided for the analog-displayed count value is updated in such a manner that the peak value is displayed within the possible analog-display range. Further, an analog quantity measuring method is provided, which comprises counting displacement of the probe, compares the obtained count value with a peak value of the count value, holds the count value as a new peak value depending upon a result of the comparison, and executes the comparison and the holding of the peak value again if the difference between the present peak value and the present count value exceeds a predetermined value. The analog quantity display and measuring methods are applicable to a digital/analog display type measuring instrument comprising a counter for counting the displacement of the probe in contact with the measured object, a digital display section for digitally displaying the count value, and an analog display section located adjacent to the digital display section, for displaying the count value as the bar graph comprising the large number of analog bars arranged in juxtaposition in one direction.
Owner:MITUTOYO CORP

Sleeper synthesized by enhanced fiber

The invention relates to a reinforced fiber composite sleeper for supporting railway tracks. The reinforced fiber composite sleeper is one made from reinforced fiber materials, fiber felts or weaving cloth through resin impregnation, formed by the pultrusion of a forming die for designing the shape of the section and solidified in the forming die. The invention overcomes the defects of the known techniques, has ideal strength and elasticity and good insulating property compared with the common concrete sleeper and the anticorrosive wooden sleeper, and ensures the safe running of the trains. In addition, with the good elasticity, the reinforced fiber composite sleeper greatly enhances the whole elasticity of the track structure and reduces the influence on roadbeds from the vibration of the trains and the environmental pollution from the noise of the trains during running; with the good insulating property, the reinforced fiber composite sleeper has no influence on the track circuits so as to ensure the safe running of the trains. The invention has the advantages of simple manufacturing, easy forming and short production period, and is capable of realizing the mechanical and continuous production. Besides, the length of the reinforced fiber composite sleeper can be cut and processed according to the determined length requirements, and the waste sleepers can be treated and recycled easily.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1

Urban rail transit shock absorption type floating slab rail system

An urban rail transit shock absorption type floating slab rail system comprises a floating plate (1), a tunnel foundation (5) and a steel rail (2). The steel rail (2) is fixed to the floating plate (1) through fasteners (3). The floating plate (1) is arranged on the tunnel foundation (5) through a vibration isolator (4). The tunnel foundation is arranged in a tunnel (8). The urban rail transit shock absorption type floating slab rail system further comprises a shock absorption device arranged on the floating plate (1), The shock absorption device is composed of shock absorption blocks (6) or shock absorption strips (10) and an elastic damping element (7) and is arranged on the floating plate (1) discretely. Some lines of the shock absorption blocks (6) are arranged within the width range of the floating plate (1), and the other shock absorption blocks (6) are arranged within the length range of the floating plate (1). The urban rail transit shock absorption type floating slab rail system is simple in structure and convenient and feasible to assemble and detach; the low-frequency-band vibration isolation effect of the floating plate is improved, the disadvantageous influence that vibration is amplified when the frequency of the floating plate is close to the inherent frequency is restrained, and the urban rail transit shock absorption and noise reduction control and the social harmonious development promotion are facilitated.
Owner:TONGJI UNIV

Lowly arranged wire structure used in medium-low speed magnetic levitation traffic engineering fill section

The invention belongs to the technical field of medium-low speed magnetic levitation traffic engineering, and in particular to a lowly arranged wire structure used in a medium-low speed magnetic levitation traffic engineering fill section. The lowly arranged wire structure comprises bearing rail beams, a soil filling roadbed structure and internode mistake-proofing bedplates, wherein the bearing rail beams comprise track and guide track bearing structures and bottom plates; a gap is formed between every two adjacent bottom plates; a lower bearing rail beam pad layer is arranged between the bottom surface of each bearing rail beam and the top surface of the soil filling roadbed structure; the internode mistake-proofing bedplates are arranged at the bottom of the gaps between adjacent bottom plates and are positioned between adjacent lower bearing rail beam pad layers; bearing rail beam refilling protection layers are arranged on the top of the soil filling roadbed structure; waterproof sealing layers are arranged on the surfaces of the bearing rail beam refilling protection layers; evacuation platforms and auxiliary construction connector systems are arranged on the tops of the bearing rail beam refilling protection layers. The lowly arranged wire structure can meet the requirements of stable operation of a magnetic-levitation train, is sufficient in strength and deformation resistance, and can ensure long-term stability of a roadbed main body below the bearing rail beams in various natural environments.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP

Slab end isolation mounting device for floating track bed

The invention belongs to the field of vibration control and relates to a slab end isolation mounting device for supporting a floating slab in a floating track bed. The slab end isolation mounting device comprises a top slab, a bottom slab, an elastic element and a damping element, wherein the elastic element and the damping element are arranged between the top slab and the bottom slab. The slab end isolation mounting device is characterized in that the top slab is provided with a slab end horizontal limiting device; the slab end horizontal limiting device comprises a slab end transverse limiting device or/and a slab end lengthwise limiting device. The slab end isolation mounting device and a prefabricated short slab in the length of 1.2-8m form the structure of the floating track bed together, the prefabricated production and lifting construction of the floating slab are possible, and the prefabricated short slab is limited lengthwise and transversely through the slab end horizontal limiting device, so that the stability and safety of the structure of the floating track bed in the travelling process are guaranteed, the construction speed is greatly improved, the construction period is further shortened, the construction difficulty is reduced, and the production cost is saved. The isolation mounting device is high in practicability, safe, reliable and high in cost performance and has a wide market application prospect.
Owner:GERB QINGDAO VIBRATION CONTROL +1

High-speed railway ballastless track line rapid repairing method

The invention belongs to the technical field of high-speed railway ballastless track repairing and provides a high-speed railway ballastless track line rapid repairing method in order to solve the problem that at present, a complete set of effective, rapid and systematic repairing method is not available for existing high-speed railway ballastless track lines. The high-speed railway ballastless track line rapid repairing method comprises the steps of line-to-line physical isolator installation, track sawing and moving, integral concrete track bed cutting and transporting, subgrade bed surface layer graded broken stone measurement leveling, supporting layer construction, track bed slab construction, steel track welding locking, track fine adjustment, road shoulder waterproof and drainage engineering and related engineering installation; line-to-line physical isolator demolition, line-to-line sealing layer and related engineering recovery, steel track polishing derusting, line-to-line waterproof construction, and drainage side ditch and side ditch platform recovery construction. Implementation is easy, and the high-speed driving requirement is met after repairing; the repairing and reinforcement effect is good, and the situation that a problem happens again to a ballastless track is effectively prevented; and the high-speed railway ballastless track is efficiently, rapidly, completely, systematically and comprehensively repaired and maintained, so that the safety of railway operation and the long-term durability of the structure of the ballastless track are ensured.
Owner:CHINA RAILWAY NO 3 GRP CO LTD +1
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