Casing Oscillator KRT150
Greater embedding pressure can be achieved by Casing oscillator
instead of Casing Drive Adapter, Casing can be embedded even in
Casing oscillator owns such merits as strong adaptability to
geology, high quality of completed pile, low noise, no mud
contamination, slight influence to former foundation, easy control,
low cost, etc. It owns advantages in following geological
conditions: instable layer, underground slip layer, underground
river, rock formation, old pile, erratic boulder, quicksand,
foundation of emergency and temporary building.
It is especially suitable for coast, beach, old city wasteland,
desert, mountain area and the place surrounded by buildings.
|KRT150 Casing Oscillator Technical Specification|
|Max. Operating pressure||Mpa||28|
|Max. lifting force||KN||2050|
|Height of Mainframe||mm||650|
|Balance weight pressure||KN||900|
|Clamping force(sub clamp)||KN||280|
|Width of connection box||mm||560|
|Width of tail||mm||1600|
|Width of base frame||mm||2720|
|Height of tail||mm||1170|
|Height of connection box||mm||580|
|Connection box pin shaft stroke||mm||60|
|Height of jaw||mm||630|
|Height of mechanical fixture||mm||1150|
(1) Low purchase and transport costs for the shared utilization of
rig pump instead of special pump truck.
(2) Low operation cost for the sharing of output power of rotary
drilling rig, energy saving and environmental friendly.
(3) Ultra-large pull/push force up to 210t is supplied by lifting
cylinder and the large can be achieved with added counter-weight to
speed up construction.
(4) Dismountable counterweight from 4 to 10t as required.
(5) Reduction in transport cost for the counterweight is made of
(6) Work stably-combined action of counterweight frame and ground
anchor fix the bottom of oscillator to the ground firmly and reduce
the reaction torque generated by oscillator to rig.
(7) High working efficiency for the automatic casing oscillation
after 3-5m casing-in.
(8) The distance between oscillator and rig can be adjusted
conveniently due to bolt connections.
(9) Added anti-torsion pin of clamping collar to ensure 100% torque
transfer to casing.
(10) 0.6-1.5m casing diameter with different clamping collar to
meet customers’ needs.
4. Using Conditions
When the strata conditions are unstable, Casing is required to be
driven to overall depth to prevent hole's collapse. It is called All Casing method (Benoto Method, Shaft Drilling).
To drive the Casing and retract it after concreting, Casing
Oscillator is strongly recommended to use.
With its superior oscillating torque and lifting force, the machine
shows the best performance of driving and retracting the casing.
If it is used together with Hammer Grab, it shows the fast
excavating speed with its big volume of jaw and it is available for
excavating gravels and boulders layer.
5. Construction Photos