液压顶管机（Hydraulic pipe jacking machine）.doc

液压顶管机（Hydraulic pipe jacking machine） Hydraulic pipe jacking machine The main structure of the hydraulic pipe jacking unit consists of four parts. The main part is mainly composed of two double acting hydraulic cylinders. Hydraulic pump station: equipped with diesel pumping station and motor pump station. Support plate: the action is to fix the machine and support the wall of the pit. Top and pull head: the action is to push in and pull back and enlarge the hole. This series of products mainly include: 60T/3, 80T/3, 100T/3, 120T/3, 850mm is less than or equal to the diameter of the hole diameter, the distance is less than 120 meters of construction. The machine is easy to operate, long service life and convenient maintenance. It is a necessary tool for medium and small trenchless engineering construction units. Miniature pipe jacking machine Small pipe jacking machine also called water pipe jacking machine, pipe jacking machine for small water conservancy engineering machine, small pipe jacking machine is characterized by compact and flexible, small pipe jacking machine changes the hydraulic jacking machine efficiency, small pipe jacking machine general soil jacking speed meter for /5 seconds, is ten times the ordinary hydraulic top speed, small pipe jacking the machine and the top rod adopts high strength injection type push rod, small pipe jacking machine in the work process, the water injection to the residual soil change fee into mud flow, thereby reducing the pushing force of friction, small pipe jacking machine with changed soil resilience. In front of a small pipe jacking machine equipped with alloy bit, even rock slabs, non-metallic solid objects, can pass through solid objects, encounter, no deviation does not slip, but directly affects the process speed, please use to distinguish whether there are other objects underground. Small pipe jacking machine adopts direct push pipe, in the general case (Note: in the case of short length, small caliber) general cal