CN2049673U - Double-acting type rope coring hydrodynamic thrust rotating drill - Google Patents

Abstract

The utility model relates to a double-acting type rope coring hydrodynamic thrust rotating drill used for diamond core drilling. The double-acting impactor composed of a hammer and the valve of the hammer, a throttling ring, and a hammer anvil is combined with a rope coring drill as a whole by a sealing sleeve, a sealing joint, and a work-transferring board. The double-acting type rope coring hydrodynamic thrust rotating drill has no starting device of the impactor; the hard plating spiral sealing device is between the internal pipe and the external pipe; the impactor has no springs and nonmetal parts. The utility model has the advantages of long service life and high reliability. The work-transferring device is the work-transferring board which has radial shrinkage and axial displacement; the successful rate of assembly delivery and salvage in the external pipe is enhanced; the energy utilization ratio is increased. The velocity of rock drilling can be improved more than 30%.

Description

Double-acting type rope coring hydrodynamic thrust rotating drill

The utility model relates to a kind of double-acting type wire line coring hydraulical impact rotary drilling bits, is suitable for carrying out diamond core exploration drillng in V-XII level in the rock stratum.

Wire line coring hydraulical impact rotary drilling technology is a kind of novel drilling technique that development in recent years is got up, it combines, and wire line coring creeps into and the advantage of two new technologies of hydraulical impact rotary drilling, characteristics such as have the rate of penetration height, drilling cost is low, labour intensity is little, drilling quality is good.But existing wire line coring impact rotating drilling tool is the positive interaction formula, this drilling tool need be joined the impactor starting drive, complex structure, the sealing of flushing liquor mostly is the rubber parts sealing between inner and outer pipes, wear no resistance, life-span is short, the spring and the nonmetal parts that are easy to damage are arranged in the impactor, and application life is short, when using mud to creep into, movable part easily blocks, drilling tool starts the pump pressure height, and structural parameters are regulated complicated, is not easy to operation, the ring radial dimension of passing on Gong in the existing domestic ballistic work transfer device is not collapsible, and trafficability characteristic is poor in drilling rod.

The purpose of this utility model is intended to provide a kind of simple in structure, dependable performance, be convenient to operate, the wire line coring hydraulical impact rotary drilling bits of long service life.

The utility model is made up of outer pipe assembly and inner tube assembly two large divisions, it is characterized in that this drilling tool utilizes sealing shroud, seal nipple, the plate of passing on Gong is formed hammer and valve, restrictor ring, anvil double acting impactor and cord coring drill are combined into one.

Accompanying drawing is the vertical section schematic diagram of the utility model drilling tool.

Below in conjunction with description of drawings concrete structure of the present utility model and operating principle.This drilling tool is made up of outer pipe assembly and inner tube assembly two large divisions.The inner tube assembly that will have the double acting impactor with fisher pulling spearhead 1 is put in the outer pipe assembly, when inner tube assembly puts in place, pass on Gong plate 9 under the effect of tension spring 12, open up into maximum position, and be sitting in accept the ring 11 on, helixseal joint 3 then enters in the sealing shroud 2, send into flushing liquor in the hole when flowing to seal nipple 3 places, path is blocked, be forced in the impactor, produce high pressure at restrictor ring 7 places, make have on, the valve 4 of following area difference and hammer 5 are realized, following reciprocating motion is also impacted anvil 6, and impact force then reaches through the plate 9 of passing on Gong and accepts ring 11, splined shaft 13, outer tube 14 and drill bit 15 are realized detritus.On the seal nipple 3 in this drilling tool right-handed thread is arranged, utilize the helixseal principle to realize sealing.Helicla flute on the seal nipple 3 has row's sand and hydraulic stator effect, has improved the compliance of impactor to the mud sand content, alleviates frictional resistance, prolongs its life-span.Outer relatively other parts of pipe assembly of sealing shroud 2 have less diameter, when inner tube assembly is thrown in and salvage, inner tube assembly have been played centralizing function.Seal nipple 3 and sealing shroud 2 all adopt chromium plating to handle in addition, and abrasion resistance is good, and the life-span is long.Impactor need not to be provided with special starting drive.Valve 4, hammer 5 all adopt the sealing of right-hand screw formula, and handle through hard chrome plating, the abrasion resistance height, and the grains of sand are difficult in motive position stuck, help mud and creep into.

The plate 9 of passing on Gong be designed to two can radial contraction fanning strip, the plate lateral surface is a sphere, inner tube assembly when throwing in and salvage, the sphere maximum gauge place of backup plate is spacing, the radial dimension of stop portion is than the radial dimension big 14mm of difference and the 4.5mm of plate 9 upper and lower ends of passing on Gong, so all the blocked portion phenomenon can not take place at any position, improve the input and the fishing success ratio of inner tube assembly.Two pass on Gong plate 9 its stop portion and spline housing 10 internal diameters under the effect of tension spring are adjacent to when creeping into, and the upper surface contacts with the panel seat 8 of passing on Gong, and the lower end sphere then hits ring 11 endoporus spheres and matches with holding, and has played the effect of transmitting ballistic work.Passing on Gong all has rectangular pin-and-hole on panel seat 8, the plate 9 of passing on Gong, and shooting property straight pin 16,17 can make its axial generation displacement along drilling tool, thereby the panel seat 8 of guaranteeing to pass on Gong, the plate 9 of passing on Gong, holds and hit ring 11 upper and lower end faces and contact effectively, has improved energy utilization ratio.The plate 9 of passing on Gong has carried out the chromium plating processing, has improved abrasion resistance.

The utility model is the process debugging in test room, carried out real brill test in the goldfield, rate of penetration is up to 14.4 meters/hour, and average drilling speed is 12 meters/hour, creep into rock speed than common wire line coring and improve 30%, salvaging, input and impactor reliable operation rate are 100%.

Claims (4)

1, a kind of double-acting type wire line coring hydraulical impact rotary drilling bits of forming by outer pipe assembly and inner tube assembly two large divisions, it is characterized in that this drilling tool utilizes sealing shroud, seal nipple, the plate of passing on Gong will be combined as a whole by double acting impactor and the cord coring drill that hammer and valve, restrictor ring, anvil are formed.

2, drilling tool according to claim 1 is characterized in that seal nipple, valve, hammer outer radius all adopt the sealing of metal/metal right-hand screw.

3, drilling tool according to claim 1 is characterized in that seal nipple, sealing shroud, valve, the plate of hammering into shape, pass on Gong all handles through chromium plating.

4, drilling tool according to claim 1, the plate lateral surface that it is characterized in that passing on Gong is shaped as sphere, and the radial dimension of its stop portion all has rectangular pin-and-hole than respectively big 14mm of upper and lower side and 4.5mm on the pass on Gong plate and the panel seat of passing on Gong.

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