Bridge Girder Erection MachineTJ series highway bridge girder erection machine

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Subsurface excavation bogie is developed for subway tunnel engineering construction, and is applicable for the construction in soft soil and cobblestone stratums. It has the functions, such as earthwork excavation, excavation waste discharge, grooving, conduit digging, auxiliary support and auxiliary wet spray. It is designed with the external power supply, and is hydraulically driven crawler chassis walking and double-arm working equipment. It is characterized by high efficiency, environment-friendliness, compact structure and good manoeuvrability. It is free from the influence of tunnel section shape, and can replace the manual work in large area.

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Operation performance parameters	Unit	TWZ180
Work    range (W×H) maximum	m	5×6
Work    range (W×H) minium	m	3×2.9
Applicable    gallery nature		Soft soil, cobblestone,    weathered rock etc.
Outline    dimensions (L×W×H)	m	7.5×2 ×2.4
Machine    weight	kg	18000
Power    supply voltage	V	380
Total    installed power	kW	90
Gradeability	°	±26
System    pressure	MPa	28MPa
Digging    and loading means		Backhoe
Material    conveying capacity	m³/h	120
Material    conveying means		Double-chain scraper/belt
Milling    and planing head power	kW	45
Cutting    capacity of milling and planing head	kN	17
Drillhole    diameter	mm	Φ27 -Φ42
Drilling    speed	m/min	0.9～1.5
One-time    drilling depth	m	2.1
Wet-spray    capacity	m³/h	7m³/h
Maximum    concrete conveying distance (horizontal)	m	200
Rated    working gas pressure	MPa	0.5

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