The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:
(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.
(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.
(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.
(4) Single action structure is realized by two pairs of thrust bearings.
(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.
(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.
Name of product specification Materials Steel factory / origin June 11 price (yuan/ton) June 15th price (yuan/ton) One week ups and downs Common line Φ6.5mm Q235 Handan Iron and Steel 3380 3330 -50 altitude Φ6.5mm Q235 Handan Iron and Steel 3420 3370 -50 Rebar Φ12mm HRB335 Handan Iron and Steel 3630 3630 0 Rebar Φ14mm HRB335 Handan Iron and Steel 3580 3580 0 Rebar Φ25mm HRB335 Handan Iron and Steel 3430 3430 0 Rebar Φ25mm HRB335 2672 3430 3430 0 Hot rolled coil 2.0*1500*c Q235 Handan Iron and Steel 4280 4250 -30 Hot rolled coil 2.3*1500*c Q235 Handan Iron and Steel 4200 4170 -30 Hot rolled coil 2.5*1500*c Q235 Handan Iron and Steel 4130 4100 -30 Hot rolled coil 2.75*1500*c Q235 Handan Iron and Steel 4080 4050 -30 Hot rolled coil 3.0*1500*c Q235 Handan Iron and Steel 3980 3950 -30 Hot rolled coil 3.75*1500*c Q235 Handan Iron and Steel 3780 3780 0 Hot rolled coil 5.5*1500*c Q235 Handan Iron and Steel 3780 3780 0 Hot rolled coil 7.5*1500*c Q235 Handan Iron and Steel 3780 3780 0 Cold rolled plate 0.9*1250*C SPCC Handan Iron and Steel 4900 4800 -100 Cold rolled plate 1.0*1250*C SPCC Handan Iron and Steel 4850 4750 -100 Cold rolled plate 1.5*1250*C SPCC Handan Iron and Steel 4850 4750 -100 Cold rolled plate 2.0*1250*C SPCC Handan Iron and Steel 4850 4750 -100 Plate 6mm Q235 Handan Iron and Steel 4900 4950 50 Plate 8mm Q235 Handan Iron and Steel 4650 4680 30 Plate 10mm Q235 Handan Iron and Steel 4450 4480 30 Plate 12mm Q235 Handan Iron and Steel 4230 4260 30 Plate 14-20mm Q235 Handan Iron and Steel 4050 4080 30 Plate 14-20mm Q235 Wenfeng 3960 4000 40 Plate 14-20mm Q235 Puyang 4000 4040 40 Low alloy plate 8mm Q345 Handan Iron and Steel 4800 4830 30 Low alloy plate 14-20mm Q345 Handan Iron and Steel 4200 4230 30 I-beam 16# Q235 A Gang 3300 3300 0 I-beam 25# Q235 Lai Gang 3750 3750 0 I-beam 28-32# Q235 Angang 3800 3800 0 Channel steel 8# Q235 Tangshan 3330 3330 0 Channel steel 28# Q235 Lai Gang 3700 3700 0 Angle Steel 5# Q235 Angang 3480 3480 0 Angle Steel 14# Q235 Tang Gang 3530 3530 0
Other Parts,Spearhead Base,Compression Spin,Core Lifter
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