48results about How to "Guaranteed operating space" patented technology

The invention discloses a method for reinforcing unloading beams of an unloading station of a coal mine. The method includes technological steps of (1), chiseling away concrete of redundant portions of inner sides of the unloading beams A and B; (2), increasing widths of reinforced concrete beams of outer sides of the unloading beams; (3), welding anchor bars on steel plates which have thicknesses ranging from 8mm to 12mm and are used as formworks, and then anchoring the steel plates on the inner sides of the unloading beams; (4), grouting and compacting high-strength non-shrinkage grouting materials in gaps among the steel plates and the unloading beams; (5), additionally arranging concealed beams on an access slope between the unloading beams to prevent the unloading beams from continuing deforming inwardly after the unloading beams are reinforced; and (6), grooving parts among the unloading beams and a concrete slab of the top of a coal bunker. The method has the advantages that the method is simple in implementation process, easy to implement, short in period, and low in cost, and becomes effectively quickly, the deformation resistance and the bearing capacity of the unloading beams can be effectively improved, service lives of the unloading beams of the coal bunker are prolonged, safe running of production of the coal mine is guaranteed, and problems that unloading beams deform and tramcars cannot run through due to deformation of an unloading chamber are effectively solved.

The invention discloses a central beam assembly applicable to a railway wagon having a large weight-concentrating capability. The central beam assembly is characterized by comprising two abdominal central beams made of H-type steel, wherein an inner interval of two web plates of the central beams is 400-600mm; the web plates are connected through a central beam separating plate; the height of an abdominal part of each of the central beams is above 700mm and is gradually reduced toward two ends; inner towing beams shaped like a Chinese character 'ji' are nested between the web plates at two ends of the central beams; and the inner interval of the inner towing beams is 350mm. According to the invention, the two abdominal central beams made of H-type steel and the nested hat-shaped inner towing beams are installed and welded into a nested double-web plate central beam structure, the interval of web plates of the two abdominal central beams can be increased to 400-600mm, the effect of using large-size structural steel with wider winged edges as the central beams is realized, and an operation space for welding the central beam separating plate is ensured; and through installing and welding of large-size structural steel central beams, the central beams can achieve higher stiffness and strength and are applicable to the railway wagon having a 80t or 90t weight-concentrating capability. The nested hat-shaped inner towing beams are used for realizing mounting and barffing of a 350mm wagon coupler buffering device.