1 hdd ditch witch collars tools Construction principle of drive and guide drilling Guide drilling is mainly completed by jetting auxiliary cutting bits. If the drill string is fed and rotated at the same time, the bevel will be disoriented and the drilling will be straightened. If only the drill string is rotated, the reaction force acting on the slope causes the bit to change direction. There is a probe or transmitter in the pilot bit.

Advantages and disadvantages of 2 hdd ditch witch collars tools Advantages and disadvantages: Low interference to the surface, fast construction speed, controllable pipeline laying direction, and high construction accuracy. Disadvantages: The construction site requirements are large, it is difficult to construct in non-cohesive soil and gravel layers, and it is usually suitable for various soil layers without large pebbles.

3 hdd ditch witch collars tools Construction process Construction Preparation → Measurement and pay-off → Equipment installation → rig anchoring → Mud installation → guide hole construction → reaming construction → Pipe backhauling.

hdd ditch witch collars tools are flooded, what should I do?

1. Release all the oil-water mixture in the oil pan, add clean water to rinse until no dirt flows out, then use kerosene or light diesel to rinse the oil pan, add more cleaning oil [diesel] until the machine is full to the oil filling port [or until the cleaning oil flows out, because some machine exhaust pipe is in the middle of the engine], use compressed air to insert into the lower part of the cleaning oil as far as possible. Boiling flushing can make the sediment deposited in the parts mix with the cleaning oil, and stop and discharge according to the situation (such as checking whether the valve rocker arm assembly is cleaned from the oil filling port); 2. Remove the injector, inject kerosene or light diesel oil into the cylinder, and after part of the injection [make it wash the sand in the piston ring gap], also use compressed air to flush out the cleaning oil, add lubricating oil with low viscosity, and add lubricating oil to the cleaned oil pan; 3. After the hydraulic oil tank inspection is completed, the residual lubricating oil on the top of the piston is drawn out after more than ten laps of the manual disc forwarding motor, and the injector is installed and cleaned.

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