My invention relates to road building mechanism, and has particular reference to a machine for applying concrete to a roadbed, and for compacting the same thereon. In the copending application of Bert Noble, Serial No. 427,768, filed February 12, 1930, is disclosed a pavement laying and ...
This machine is not only suitable for tamping operations of different types of rails and concrete sleepers after cleaning and cleaning operations for large and medium repairs, but also for tamping operations of ballast in ballast beds of new construction lines. The machine has superior performance, ...
Concrete Steel Slump Cone Set Name Protable Concrete Steel Slump Cone Set Materail 304 Stainless steel Steel Ruler Material 304 Stainless steel Base palte Materil Cast aluminium alloy Tamping Rod long 60cm Up diameter 100mm Bottom diameter 200m...
This machine is not only suitable for tamping operations of different types of rails and concrete sleepers after cleaning and cleaning operations for large and medium repairs, but also for tamping operations of ballast in ballast beds of new construction lines. The machine has s...
Mechanism of electro-hydraulic exciter for new tamping device A new tamping device which is driven by an electrohydraulic exciter was proposed to overcome the limitations of mechanically driven devices.The double-rod ... Y Liu,GF Gong,HY Yang,... - 《Journal of Central South University》 被引...
that is of double guide pillar frame and single cylinder lifting mode. Due to increasing the tine palm inserting depth and the guide pillar stroke stop means, it’s able to to operate on II type concrete sleeper and III type concrete sleeper, and on various concrete sleeper and rail track....
The double flange unit can be positioned at a certain number of angles by, for example, a jack (V) mounted on the above-mentioned housing. The jack rod is fastened to one of the above-mentioned flanges. An adjustable stop (68) limits and preselects the phase-shift angle. As shown in...
The invention discloses an inserting tamping depth control device for a cement concrete slump test. The upper end of a tamping rod with scales is sleeved with a positioning ring which can vertically move along the tamping rod with the scales, and the lower end of the tamping rod with the ...
4, engaging a nut 40 connected to the sides by obliquely disposed levers 39, the rod being guided by a collar on a strut 35. The side walls 23 are forced apart on first rotating the rod until stopped by the strut, the end walls are then moved, and the removal of the block from ...
4, engaging a nut 40 connected to the sides by obliquely disposed levers 39, the rod being guided by a collar on a strut 35. The side walls 23 are forced apart on first rotating the rod until stopped by the strut, the end walls are then moved, and the removal of the block from ...