CN1015809B - Core plugging notifying mechanism of rope core drilling tool - Google Patents

Abstract

The present invention relates to an adjustable elastic valve type rope coring drill of a rock core blockage informing mechanism. According to the principle that when a hollow cylindrical elastic body is pressed to deform in the axial direction, the axial pressure and the axial length of the deformed part of the elastic body are in inverse proportion if diameter deformation amounts are the same, a long elastic body and a sleeve whose inner diameter is a little bit longer than the outer diameter of the elastic body are adopted, and the position of the sleeve is adjusted to ensure that the elastic body partially enters the sleeve or is completely disengaged with the sleeve to adjust the length of the free surface of the elastic body, which can generate radial deformation. In this way, required pressure is changed, and the informing pressure of rock core blockage is adjusted. The rope coring drill of the present invention discloses in the specification 1.

Description

Core plugging notifying mechanism of rope core drilling tool

The present invention stops up the mechanism that notifies for a kind of core of core plugging notifying mechanism of rope core drilling.

" wire line coring diamond drilling technology " introduced a kind of core plugging notifying mechanism of rope core drilling that Beijing geological machinery factory produces.This drilling tool is formed by dragging for spearhead, bullet block head, recovery tube, tension spring, bullet card, bullet card chamber, bullet card frame, hanging ring, seat ring, steel ball, spring, valve seat, spring base, locking nut, adjusting nut, lower shaft, the cushion rubber of notifying, seal cover, sealing ring, bearing, bearing support, inner pipe joint, outer tube, interior pipe, centering ring, short circuit, reamer, jump ring, clip spring seat, drill bit etc., adopts cushion rubber formula core to stop up the mechanism that notifies.In the drilling process, when the core obstruction takes place, core is internally managed the jacking force of generation, the cushion rubber extrusion is outwards expanded, annular gap between inner and outer pipes is reduced or obstruction fully, and the flushing liquor circulation is obstructed, and pump pressure sharply raises, operating personnel know that in view of the above core takes place to be stopped up, and in time takes Corresponding Countermeasures.According to the difference of rock drilling character, the compound mode by changing elastic valve plate or change different flexible elastic valve plates is adjusted core and is stopped up axial compression when notifying.The each adjusting when notifying axial compression must the dismounting drilling tool.And dismounting drilling tool complex process, the technical requirements height is wasted time and energy, and is difficult in the working site carry out.

Task of the present invention is exactly that the core that designs a kind of easy adjusting stops up the mechanism that notifies, and is used for core plugging notifying mechanism of rope core drilling.

In order to realize above task, during according to hollow cylinder elastic body axial compression, its axial length reduces, and it is big that diameter becomes, if make the elastic body of identical performance and diameter produce identical diameter distortion amount, when the elastic body axial length was big, required axial compression was little; Elastic body length is little, the big principle of then required pressure, the cover that is a bit larger tham the elastic body external diameter with long elastic body and internal diameter, by adjusting the position of cover, change cover and block elastomeric different length (never block to the limit and block), can produce the scope of freedom length of radial deformation to adjust elastic body, thereby change required pressure, realize core is stopped up the adjusting of the axial compression of notifying.

This core stops up the mechanism that notifies, even use a kind of elastic body of specification, also can satisfy the difference axial compression requirement of notifying, and it is simple in structure, and the pressure adjustable range is big, and reliable operation is regulated easily.

Embodiment as shown in Figure 1, the cover 34 with suspension joint 35 with screwed connection.By the adjustment to this thread, cover 34 is done relative motion with suspension joint 35, thereby covers part valve block 36, or it is unlimited fully, required pressure when notifying to change the core obstruction.The face of cylinder of Fig. 1 valve block 36 all is the scope of freedom, and its deformable length is the whole length of valve block 36, and core stops up the pressure minimum of notifying.The cover 34 of Fig. 2 covers the small diameter cylinders section 37 of valve block 36 fully, makes it that radial elastic deformation can not take place, and has only cylinder with large diameter section 38 to stop up under the pressure effect that is caused at core elastic deformation takes place, and its core stops up the pressure maximum of notifying.Valve block 36 usefulness polyurethanes are made, shape as shown in Figure 3, constitute by cylinder with large diameter section 38 and 37 of small diameter cylinders sections, the axis of parallel valve block 36 cuts two cylinders 39 symmetrically on cylinder with large diameter section 38, make valve block 36 when the generation elastic deformation is blocked fluid course, allow a small amount of flushing liquor to flow through.Like this, pump pressure was improved and notified, again the not interruption fully of reason flushing liquor and the burning of bits.In order to adjust cover 34 position, on the screw thread of suspension joint 35 adapter sleeves 34, made keyway, on cover 34, do jagged 40 and keyway 41(as shown in Figure 4), when breach 40 overlaps with the keyway of suspension joint 35, put into key 42, just can make that overlapping 34 locatees.In order to prevent that key 42 from dropping out at work automatically, on cover 34, done jump ring groove 43 and jump ring locating slot 44, the little hook on the jump ring 45 46 is aimed at the jump ring locating slots 44 jump ring groove 43 of packing into, jump ring 45 is pressed on the key 42 gets final product.Take off jump ring 45 and key 42 during adjustment successively, again key 42 and jump ring 45 are reinstalled the original place after the position of cover 34 mixes up.

Description of drawings: Fig. 1 is a tube portion schematic diagram in the core plugging notifying mechanism of rope core drilling.Elastic valve plate 36 does not have quilt cover 34 to cover, for core stops up the pressure state hour of notifying.Fig. 2 is a tube portion schematic diagram in the core plugging notifying mechanism of rope core drilling.Small diameter cylinders section 37 quilt covers 34 of elastic valve plate 36 cover, the state when notifying the pressure maximum for the core obstruction.Fig. 3 is the elastic valve plate positive view.Fig. 4 is the elastic valve plate lateral view.Fig. 5 is contained in elevation on the drilling tool for jump ring.Fig. 6 is contained in lateral view on the drilling tool for jump ring.Fig. 7 is the elevation of key.Fig. 8 is the vertical view of key.Fig. 9 is the positive view of cover.Figure 10 is the A-A sectional view of cover.Figure 11 is the vertical view of cover.Figure 12 is the two-tube schematic diagram of JS56 core plugging notifying mechanism of rope core drilling of Beijing geological machinery factory.Wherein: 1-drags for spearhead, 2-bullet block head, the 3-recovery tube, the 4-tension spring, 5-bullet card, 6-bullet card chamber, 7-bullet card frame, the 8-hanging ring, the 9-seat ring, the 10-steel ball, the 11-spring, the 12-valve seat, the 13-spring base, the 14-locking nut, the 15-adjusting nut, the 16-lower shaft, the 17-cushion rubber of notifying, the 18-seal cover, the 19-sealing ring, the 20-sealing ring, the 21-bearing, the 22-bearing support, the 23-spring, the 24-bearing, the 25-inner pipe joint, the 26-outer tube, pipe in the 27-, the 28-centering ring, the 29-short circuit, the 30-reamer, the 31-jump ring, the 32-clip spring seat, the 33-drill bit.

Claims (2)

1, a kind of core of core plugging notifying mechanism of rope core drilling stops up the mechanism that notifies, form by elastic valve plate, cover, key, jump ring, suspension joint, it is characterized in that: the cover that is a bit larger tham the elastic valve plate external diameter with long elastic valve plate and internal diameter, adjust the position of cover, elastic valve plate is partly entered in the cover or from cover to be withdrawed from fully, can produce the scope of freedom length of radial deformation to adjust elastic valve plate, thereby change the way of required pressure, realize core is stopped up the adjusting of the pressure of notifying.

2, stop up the mechanism that notifies according to the core of the said core plugging notifying mechanism of rope core drilling of claim 1, it is characterized in that: elastic valve plate is made up of different two sections of diameter, and cuts two cylinders symmetrically at parallel its axis of enlarged diameter section.

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