CN211201766U - Continuous pipe following drilling structure - Google Patents

Abstract

The utility model discloses a follow pipe in succession and creep into structure, bore and the trephine including the center, the trephine is equipped with the drive boss that the multiunit set up along circumference, the center bores and is equipped with the multiunit and establishes the drive groove that the center bored and rotate the back and be used for supplying multiunit drive boss locking when the trephine cover, every group drive groove includes a plurality of drive grooves that set up along the axial, every group drive boss includes a plurality of drive bosses that correspond with a plurality of drive grooves, the center bores and still is equipped with a plurality of ring channels that correspond with a plurality of drive grooves, the upside of ring channel is equipped with the holding surface that is used for restricting the degree of freedom of drive boss upper and lower direction jointly with the downside of drive. Above-mentioned continuous pipe following creeps into the structure and provides a plurality of contact surfaces and strong point through addding the ring channel, has reinforceed the locking structure who has stabilized trephine and central brill, has solved the easy problem that takes place skew and rock from top to bottom, has improved life.

Description

Continuous pipe following drilling structure

Technical Field

The utility model relates to a soil layer or rock creep into technical field, in particular to follow pipe in succession and creep into structure.

Background

The impact drill bit is widely applied to ore detection and underground rock sample collection, and is also applied to early-stage rock sample detection of a series of engineering projects such as constructional engineering, hydropower, ports, express ways, urban construction projects and the like.

The continuous pipe-following drilling structure consists of a drill bit body and alloy teeth, wherein the drill bit transmits stress waves of impact striking from an impactor or a power head to the alloy teeth through the drill bit body, and the alloy teeth break rock to break rock. When drilling construction is carried out, in order to reduce the drilling difficulty, construction is usually carried out by combining two modes of drilling and reaming, the trephine is required to be used for reaming during drilling, after the trephine is continuously reamed to a preset depth, the trephine needs to be separated from the central drill, the trephine is not used after being separated, and the central drill continues to drill. The trephine cover is established the center and is bored at the locking groove department locking fixedly with the center, consequently at broken rock in-process, the trephine is unstable with the locking structure that the center bored, and contact surface and strong point are few, take place the skew easily, rock about boring the direction, and then influence in succession with the pipe and creep into the life of structure.

Therefore, how to provide a continuous casing following drilling structure which has a stable locking structure of a trephine and a central drill, avoids deviation and shaking and prolongs the service life is a technical problem which needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a follow pipe in succession and creep into structure through addding the ring channel, provides a plurality of contact surfaces and strong point, strengthens the locking structure who has stabilized trephine and central brill, has solved the problem that takes place the skew easily and rock from top to bottom, has improved life.

In order to realize the above-mentioned purpose, the utility model provides a follow pipe in succession and creep into structure, bore and the trephine including the center, the trephine is equipped with the drive boss that the multiunit set up along circumference, the center bores and is equipped with the multiunit and bores and rotate the back and be used for supplying multiunit drive boss locking when the trephine cover, every group drive groove includes a plurality of drive grooves that set up along the axial, every group drive boss includes a plurality of drive bosses that correspond with a plurality of drive grooves, the center bores and still is equipped with a plurality of ring channels that correspond with a plurality of drive grooves, the upside of ring channel is equipped with the holding surface that is used for restricting the degree of freedom of drive boss upper and lower direction jointly with the downside of drive groove.

Preferably, each set of driving grooves includes two driving grooves, and each set of driving bosses includes two driving bosses respectively corresponding to the two driving grooves.

Preferably, the number of sets of drive grooves is two and the number of sets of drive bosses is two.

Preferably, the included angle between the two sets of driving grooves is 180 °, and the included angle between the two sets of driving bosses is 180 °.

Preferably, the central drill is further provided with a plurality of groups of unlocking grooves which correspond to the plurality of groups of driving bosses and are used for realizing the separation of the trephine and the central drill.

Preferably, the upper side of the annular groove is provided with a frosted surface to increase frictional resistance.

Compared with the prior art, the continuous pipe following drilling structure provided by the utility model comprises a central drill and a trephine, the trephine is sleeved with the central drill and then is rotationally locked, the trephine is provided with a driving lug boss, the central drill is provided with a driving groove for rotationally locking the driving lug boss, the central drill is also provided with a ring groove, the ring groove provides a supporting surface for supporting the driving lug boss in the fixed driving groove, the continuous pipe following drilling structure is additionally provided with the ring groove, so that the trephine is sleeved with the central drill and is rotationally locked, the upper side of the ring groove is contacted with the lower side of the driving lug boss of the trephine, an additional contact surface is provided, on the basis that the driving lug boss is locked by the driving groove to limit the rotation of the trephine, the freedom degree of the vertical direction of the trephine is limited, a plurality of supporting points are provided simultaneously, the locking structure of the trephine and the central, the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic exploded view of a continuous casing following drilling structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a center drill according to an embodiment of the present invention;

fig. 3 is a schematic end view of the center drill and the trephine of fig. 1.

Wherein:

1-central drill, 11-unlocking groove, 12-driving groove, 13-annular groove, 131-supporting surface, 2-trephine and 21-driving lug boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Please refer to fig. 1 to fig. 3, wherein fig. 1 is a schematic diagram illustrating a split of a continuous casing drilling structure according to an embodiment of the present invention, fig. 2 is a schematic diagram illustrating a structure of a center drill according to an embodiment of the present invention, and fig. 3 is a schematic diagram illustrating an end surface of the center drill and a ring drill in fig. 1.

In a specific embodiment, the utility model provides a continuous drilling structure with pipe includes that central brill 1 and trephine 2 bore, and trephine 2 bores 1 with the center and is equipped with the corresponding locking mechanical system of multiunit, when trephine 2 bore 1 and rotatory when targetting in place by the center by the last side cover that the center bored 1, trephine 2 bores 1 locking mechanical system with the center and locks, and the relative center of trephine 2 bores 1 locking fixed.

Specifically, the locking mechanism of the trephine 2 is a driving boss 21 arranged on the inner wall surface of the trephine 2 in a hollow ring body, the locking mechanism of the central drill 1 is a driving groove 12 arranged on the outer wall surface of the cylindrical central drill 1, the driving groove 12 is L-shaped, and one end of the L-shaped driving groove 12 is communicated with the upper end of the central drill 1, namely the end surface of a drill bit.

Wherein, locking mechanical system's quantity is the multiunit, and multiunit locking mechanical system includes that the multiunit is along the drive boss 21 of circumference and the multiunit along circumference and with the drive groove 12 that multiunit drive boss 21 corresponds, and every locking mechanical system of group includes a set of drive boss 21 and a set of drive groove 12, and every drive groove 12 of group includes a plurality of axial drive grooves 12 of following, and every drive boss 21 of group includes a plurality of axial drive bosses 21 of following.

On the basis, in order to ensure that the trephine 2 and the central drill 1 are locked and fixed stably and reliably, the outer wall surface of the columnar central drill 1 is also provided with an annular groove 13, the annular groove 13 penetrates through the outer wall surface along the circumference of the central drill 1 and is an inwards-sunken arc-shaped channel, a supporting surface 131 for supporting and fixing the driving boss 21 in the driving groove 12 is arranged on the upper side of the annular groove 13 at the moment, the driving boss 21 limits the freedom degree in the vertical direction under the combined action of a contact surface on the lower side of the driving groove 12 and the supporting surface 131 on the upper side of the annular groove 13, and meanwhile, a plurality of supporting points and contact surfaces are provided.

This continuous pipe following is crept into structure still has restricted the degree of freedom of trephine 2 upper and lower direction on the basis of drive groove 12 locking drive boss 21 with the rotation of restriction trephine 2, provides a plurality of strong points and contact surface simultaneously, has strengthened the locking structure who has stabilized trephine 2 and central brill 1, has solved and has taken place the problem that squints and rocks from top to bottom easily, has improved life.

For better technical effect, the trephine 2 and the central drill 1 have multiple groups of locking structures, wherein the number of the driving grooves 12 and the number of the driving bosses 21 are multiple groups, the multiple groups of driving bosses 21 correspond to the driving grooves 12 one by one, the multiple groups of driving grooves 12 are arranged at intervals along the circumferential direction of the central drill 1, and the distances between the multiple groups of driving grooves 12 and the annular groove 13 are the same.

Specifically, the multiple groups of locking structures are used for simultaneously locking and unlocking the trephine 2 and the central drill 1, in the locking process, firstly, when the trephine 2 is sleeved with the central drill 1, the multiple groups of driving bosses 21 simultaneously move downwards to be in place along the L-type driving grooves 12 corresponding to the multiple groups of driving bosses, then, when the trephine 2 rotates relative to the central drill 1, the multiple groups of driving bosses 21 simultaneously move leftwards or rightwards to be in place along the L-type driving grooves 12 corresponding to the multiple groups of driving bosses, illustratively, the right sides of the multiple groups of driving grooves 12 tightly abut against the left sides of the driving bosses 21 to achieve locking, and the unlocking process is opposite to the locking process and is not repeated.

In addition, the center drill 1 is provided with unlocking slots 11, the number of the unlocking slots 11 is the same as the number of the groups of the driving slots 12 and the number of the groups of the driving bosses 21, the group number concept is relative to the circumferential direction, and the specific number of each group is relative to the axial direction.

Illustratively, the number of the unlocking grooves 11 is two, the two unlocking grooves 11 are arranged on the outer peripheral side of the central drill 1 in a 180-degree manner, and other components are arranged in the unlocking grooves 11, so that the trephine 2 can be driven to break rock.

In other words, the multiple locking structures include a plurality of single bodies for locking and fixing, wherein the number of the annular grooves 13 is multiple, each driving groove 12 includes a plurality of rotating grooves, each driving boss 21 includes a plurality of protruding blocks, the protruding blocks are in one-to-one correspondence with the rotating grooves, the rotating grooves are axially spaced along the center drill 1, and the rotating grooves are in one-to-one correspondence with the annular grooves 13.

Specifically, the first rotary groove of the multiple groups of driving grooves 12 is located on the same circumference of the central drill 1 and corresponds to the first annular groove 13, the first protruding block of the multiple groups of driving bosses 21 is located on the same circumference of the annular drill 2 and corresponds to the first rotary grooves of the same circumference of the central drill 1, and so on, the multiple groups of driving grooves 12 and the multiple groups of driving bosses 21 are divided according to the circumference and correspond to the annular grooves 13 one by one.

Illustratively, the number of the driving grooves 12 and the driving bosses 21 is two, each driving groove 12 includes two rotating grooves, each driving boss 21 includes two protruding blocks, and the number of the annular grooves 13 is two.

In addition, the two groups of driving grooves 12 are arranged oppositely in the circumferential direction of the central drill 1 at an included angle of 180 degrees, the two groups of driving bosses 21 are arranged oppositely in the circumferential direction of the trephine 2 at an included angle of 180 degrees, wherein the included angle between the driving grooves 12 and the unlocking grooves 11 is 90 degrees, and the driving device is mainly applied to operation environments with undefined geological conditions, such as southwest and cloud and precious areas. Because the geological condition is not clear, the relative arrangement is adopted to deal with the situation that some places need to disassemble the trephine 2 and some places need to install the trephine 2 for reaming, so that the trephine 2 is easy to align when being sleeved on the central drill 1.

For better technical effect, the upper side of the annular groove 13 is provided with a frosted surface, and reverse friction resistance is provided when the central drill 1 and the trephine 2 are locked and fixed to generate shaking and deviation, so that the shaking and deviation are reduced or eliminated.

In short, in the circumference of center drill 1, set up two ring channels 13, ring channel 13 up end and the lower terminal surface contact of two drive bosss 21 on the trephine 2, this kind of structure provides 4 contact surfaces (currently be 2 contact surfaces) than prior art, except that the rotation of restriction trephine 2, has still restricted the ascending degree of freedom in the upper and lower direction of trephine 2, has provided a plurality of strong points simultaneously, has improved the life who creeps into the structure with the pipe in succession.

It is right above the utility model provides a continuous pipe following creeps into structure and has introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (6)

1. A continuous pipe-following drilling structure is characterized by comprising a central drill (1) and a trephine (2), the trephine (2) is provided with a plurality of groups of driving bosses (21) arranged along the circumferential direction, the central drill (1) is provided with a plurality of groups of driving grooves (12) which are used for locking the driving bosses (21) after the trephine (2) is sleeved on the central drill (1) and rotates, each group of driving grooves (12) comprises a plurality of driving grooves (12) arranged along the axial direction, each group of driving bosses (21) comprises a plurality of driving bosses (21) corresponding to the driving grooves (12), the central drill (1) is also provided with a plurality of annular grooves (13) corresponding to the plurality of driving grooves (12), and the upper side of the annular groove (13) is provided with a supporting surface (131) which is used for limiting the freedom degree of the driving boss (21) in the vertical direction together with the lower side of the driving groove (12).

2. The coiled tubing drilling structure according to claim 1, wherein each set of the driving grooves (12) comprises two driving grooves (12), and each set of the driving bosses (21) comprises two driving bosses (21) corresponding to the two driving grooves (12), respectively.

3. The coiled tubing drilling structure according to claim 1, wherein the number of sets of driving grooves (12) is two, and the number of sets of driving projections (21) is two.

4. A continuous casing drilling structure according to claim 3, wherein the angle between two sets of driving grooves (12) is 180 °, and the angle between two sets of driving projections (21) is 180 °.

5. The continuous casing following drilling structure according to any one of claims 1 to 4, characterized in that the central drill (1) is further provided with a plurality of sets of unlocking grooves (11) corresponding to the plurality of sets of driving bosses (21) and used for realizing the disengagement of the trephine (2) from the central drill (1).

6. Continuous casing running drilling construction according to any one of claims 1 to 4, characterized in that the upper side of the annular groove (13) is provided with a frosting surface for increasing frictional resistance.

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