CN203463032U - Core barrel reducer union structure - Google Patents

Abstract

The utility model discloses a core barrel reducer union structure, comprising a drill rod, a drill rod reducer union, a core barrel reducer union, a core barrel and a drill bit which are connected in sequence, wherein the drill rod is in thread connection with the drill rod reducer union by the cone-shaped drill rod; the core barrel reducer union is divided into a core barrel upper reducer union and a core barrel lower reducer union; the core barrel upper reducer union is connected with the drill rod reducer union; the core barrel upper reducer union and the core barrel lower reducer union are connected by rectangular screw threads; an anti-tightening ring is mounted at the joint of the core barrel upper reducer union and the core barrel lower reducer union; a sediment tube is connected to the outer side of the upper end of the core barrel lower reducer union; a certain clearance is reserved between the sediment tube and the drill rod; the core barrel is connected to the lower end of the core barrel lower reducer union. The drill rod sticking accident caused by small chipping is effectively avoided by using the core barrel reducer union structure; when an accident is caused by large chipping, the accident can be conveniently and rapidly treated with low cost.

Description

Basket reducer union structure

Technical field

The utility model relates to a kind of basket reducer union structure for probing fields such as geological prospecting, hydrological engineering, Foundation Designs.

Background technology

In the probing field of geological prospecting, hydrological engineering, Foundation Design etc., generally all need to use reducing drilling rod.As shown in Figure 1, reducing drilling rod comprises drilling rod 1, and this drilling rod 1 is linked in sequence with basket 4, drill bit 5 by variable-diameter connector of drill rod 2, basket reducer union 3.

But when rig is using in the construction of reducing drilling rod; owing to constructing in different geographical, Different Strata; drilling depth, aperture are all different; often can run into stratum crushing; cranny development; the situations such as sand and gravel stratum, limestone, underground karst cavity; to drilling operation, cause very large obstacle; tend to occur falling piece phenomenon; at the bottom of falling piece and falling into hole; be stuck in the reducing place of drilling rod 1 and basket reducer union 3, when the lifting force of the oil pressure top of rig power itself, hoist is inadequate, be just easy to cause the accidents such as bit freezing, bury drills, the burning of bits.Run into this situation, need to employ a large amount of anti-silk drilling rods, because common drilling rod is all positive screw thread, by rig, reverse and drive anti-silk drilling rod, by female coupling tap or die nipple, every drilling rod cone is portalled interior, but process this type of accident at every turn, often consume the plenty of time, increase construction cost, increase workman's labour intensity, sometimes uncertain can handling well, there is scrapping hole, cause larger waste, also sometimes in processing, occur again new accident, successful handling rate is low.

Summary of the invention

Technical problem to be solved in the utility model is, not enough for prior art, provides a kind of and can avoid little and fall piece and cause the accident, and when falling greatly piece and cause the accident, and can facilitate and the basket reducer union structure of processing accident inexpensively.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of basket reducer union structure comprises the drilling rod connecting successively, variable-diameter connector of drill rod, basket reducer union, basket, drill bit, wherein drilling rod is threaded by taper drilling rod with variable-diameter connector of drill rod, basket reducer union is divided into reducer union under reducer union and basket on basket, on basket, reducer union is connected with variable-diameter connector of drill rod, on basket, under reducer union and basket, rectangle screwed connection is passed through in reducer union, on basket, under reducer union and basket, anti-collar is equipped with in the junction of reducer union, under basket, outside, the upper end of reducer union connects sediment tube, between sediment tube and drilling rod, leave certain gap, under basket, the lower end of reducer union connects basket.

Further being improved to of such scheme arranges wear-resistant pipe between reducer union and basket under basket.

Compared with prior art, the beneficial effects of the utility model are: a, utilize on basket the power of dismantling different of the tapered thread arranging between the rectangular thread of reducer union setting and drilling rod and variable-diameter connector of drill rod under reducer union and basket, on basket, under reducer union and basket, between reducer union, add anti-collar simultaneously, make on basket the reducer union and reducer union under basket can light separated disengagement, drilling rod in hole, whole disposable taking-ups of reducer union on variable-diameter connector of drill rod and basket, for lower step processing accident gains time and paves the way, and saved power and used the anti-cost of silk drilling rod, while avoiding processing accident, accidents happened again.B, under basket, between reducer union and basket, arrange and can be convenient for changing and wear-resistant pipe that cost is low, increased the application life of reducer union under basket, reduced the frequency of changing reducer union under basket, further provide cost savings.Under c, basket, the sediment tube of reducer union upper end arranged outside can prevent the bit freezing causing when fritter is fallen into effectively.

Accompanying drawing explanation

Fig. 1 is the traditional reducing jackrod structure schematic diagram that contains basket reducer union.

Fig. 2 is the syndeton schematic diagram of the utility model basket reducer union.

The specific embodiment

As shown in Figure 2, the utility model basket reducer union structure comprises the drilling rod 1 connecting successively, variable-diameter connector of drill rod 2, basket reducer union 3, basket 4, drill bit 5, wherein drilling rod 1 is connected by taper drill rod thread (such as pyrometric cone screw thread) with variable-diameter connector of drill rod 2, basket reducer union 3 is divided into reducer union 32 under reducer union 31 and basket on basket, on basket, reducer union 31 is connected with variable-diameter connector of drill rod 2, on basket, under reducer union 31 and basket, rectangle screwed connection is passed through in reducer union 32, on basket, under reducer union 31 and basket, anti-collar 7 is equipped with in the junction of reducer union 32, under basket, outside, the upper end of reducer union 32 connects sediment tube 6, between sediment tube 6 and drilling rod 1, leave certain gap, under basket, the lower end of reducer union 32 connects basket 4.

Like this, little while falling piece when running in construction, because sediment tube 6 being housed the upper end of reducer union under basket 32, falling piece first can fall in sediment tube 6, gapped and have certain length between sediment tube 6 and drilling rod 1, that can hold some littlely falls piece, therefore there will not be lock of tool drilling, when running into, fall greatly piece or the hole that collapses, during the accidents such as the burning of bits, utilize the characteristic of pitch between different from the form of thread, due to anti-collar 7 being housed between reducer union 31 on reducer union 32 and basket under basket, as long as rig is reversion, on basket, reducer union 31 and reducer union under basket 32 will light separated disengagements, drilling rod in hole 1 like this, whole disposable taking-ups of reducer union 31 on variable-diameter connector of drill rod 2 and basket, only leave sediment tube 6 and the lower end-piece thereof of reducer union 32 upper ends under the basket at the bottom of hole, for lower step processing accident gains time and paves the way, save power and use the anti-cost of silk drilling rod, while avoiding processing accident, accidents happened again.For increasing the application life of reducer union 32 under basket, reduce the frequency of changing reducer union 32 under basket, further save cost, under basket, between reducer union 32 and basket 4, wear-resistant pipe 8 is set.

Claims (2)

1. a basket reducer union structure, comprise the drilling rod (1) connecting successively, variable-diameter connector of drill rod (2), basket reducer union (3), basket (4), drill bit (5), it is characterized in that, drilling rod (1) is threaded by taper drilling rod with variable-diameter connector of drill rod (2), basket reducer union (3) is divided into reducer union (32) under reducer union on basket (31) and basket, reducer union on basket (31) is connected with variable-diameter connector of drill rod (2), under reducer union on basket (31) and basket, reducer union (32) is by rectangle screwed connection, under reducer union on basket (31) and basket, anti-collar (7) is equipped with in the junction of reducer union (32), the outside, upper end of reducer union under basket (32) connects sediment tube (6), between sediment tube (6) and drilling rod (1), leave certain gap, the lower end of reducer union under basket (32) connects basket (4).

2. basket reducer union structure according to claim 1, is characterized in that, between reducer union under basket (32) and basket (4), wear-resistant pipe (8) is set.

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