CN217151858U - Novel double-wall guide drill rod - Google Patents

Abstract

The utility model discloses a novel double-wall guiding drill rod, which comprises an inner drill rod, an outer drill rod sleeved outside the inner drill rod, and a male drill rod head and a female drill rod head which are respectively arranged at two ends of the inner drill rod; at least 4 water through holes are formed in the inner rod of the drill rod, and the water through holes extend towards two ends and respectively penetrate through the drill rod male head and the drill rod female head; a through hole is formed in the inner rod of the drill rod, and the through hole extends towards two ends and respectively penetrates through the male head of the drill rod and the female head of the drill rod; the through hole is used for guiding a laser beam; and a mud-water channel is arranged between the inner rod of the drill rod and the outer rod of the drill rod. The utility model discloses on the basis of traditional double-walled drilling rod, make things convenient for welding process, sealed effect is better, improves operational reliability.

Description

Novel double-wall guide drill rod

Technical Field

The utility model relates to an engineering machine tool field, in particular to novel double-walled direction drilling rod.

Background

The trenchless underground pipe jacking technology is widely applied, wherein the construction process of the soil pressure balance spiral pipe jacking machine comprises the following steps: drilling a pilot hole, installing a mud discharge sleeve, spirally drilling to discharge mud, and jacking to lay a pipeline. The critical point is to drill the pilot hole, and the quality of the pilot hole determines whether the subsequent process can be performed smoothly. The laser target is positioned in the guide cutting drill bit, and deviation rectification is implemented based on the position of a laser point in the laser theodolite on the target plate. The guide cutting drill bit is connected with the drill rod through threads, and the drill rod is connected with the main top, so that drilling is implemented.

At present, the double-wall drill rod is proposed to be used for matched drilling in the prior art, but the drill rod has the advantages of higher failure rate and short service life in the drilling process, the effective isolation of a muddy water space and a laser beam space is difficult to realize, the old drill rod is connected by threads, the reverse rotation is easy to break and the connection is unstable, and the comprehensive use effect is difficult to meet the construction requirement of the spiral pipe jacking machine.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a novel double-walled direction drilling rod, this novel drilling rod can transmit stable moment of torsion, and positive reverse effect is the same, is difficult for droing, and through novel sealing device, can effectual isolation muddy water space and laser line bundle space.

The utility model is realized by the following technical proposal, a novel double-wall guiding drill rod comprises an inner drill rod, an outer drill rod sleeved outside the inner drill rod, and a male drill rod head and a female drill rod head which are respectively arranged at two ends of the inner drill rod;

at least 4 water through holes are formed in the inner rod of the drill rod, and the water through holes extend towards two ends and respectively penetrate through the drill rod male head and the drill rod female head; a through hole is formed in the inner rod of the drill rod, and the through hole extends towards two ends and respectively penetrates through the male head of the drill rod and the female head of the drill rod; the through hole is used for guiding a laser beam;

and a mud-water channel is arranged between the inner rod of the drill rod and the outer rod of the drill rod.

As a novel double-walled direction drilling rod preferred scheme: the inner rod of the drill rod is hermetically connected with the male head of the drill rod through a first sealing groove; and the inner rod of the drill rod is hermetically connected with the female head of the drill rod through a second sealing groove.

As a novel double-walled direction drilling rod preferred scheme: the outer side wall of the drill rod male head is provided with a regular hexagon torque transmission ladder, a secondary sealing outer ladder and a primary sealing outer ladder;

and three pin holes which are positioned and connected are arranged on the regular hexagon torque transmission outer ladder.

As a novel double-walled direction drilling rod preferred scheme: the inner cavity of the female head of the drill rod is provided with a regular hexagon torque transmission inner step, a secondary sealing inner step and a primary sealing inner step which are matched with the male head of the drill rod;

the regular hexagon torque transmission inner ladder is provided with a threaded hole for positioning connection.

As a novel double-walled direction drilling rod preferred scheme: the threaded hole is matched with the pin hole.

The utility model discloses beneficial effect: the utility model provides a novel double-walled direction drilling rod, it adopts regular hexagon transmission moment of torsion, and the male and female joint of adjacent drilling rod connects through three screw thread locating pins, has improved the problem that threaded connection reversal was broken out easily well, has increased the stability of creeping into. And the rod in the drilling rod and the rod outside the drilling rod space of the novel double-wall guide drilling rod can effectively prevent high-pressure muddy water from entering the rod space in the drilling rod through welding and sealing devices, so that the muddy water space and the laser beam space are effectively isolated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of an inner rod of the drill rod;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is a partial cross-sectional view of two adjacent drill rods mated together;

fig. 6 is a cross-sectional view of the engagement at D-D in fig. 5.

In the figure: 1-a drill rod male head; 11-regular hexagonal torque transmission outer step; 12-secondary sealing outer steps; 13-first-stage sealing outer step; 2-an inner rod of the drill rod; 21-a first seal groove; 22-a second seal groove; 23-water through holes; 24-a via hole; 3-drill rod outer rod; 4-a drill rod female head; 41-regular hexagonal torque transmission inner step; 42-secondary sealing inner steps; 43-one-step seal inside step.

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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Example 1

As shown in fig. 1, the novel double-wall drill rod in this embodiment comprises: the drill rod male head 1, the drill rod inner rod 2, the drill rod outer rod 3 and the drill rod female head 4. The drill rod male head 1 comprises a primary sealOuter coverStep 13, two stage sealOuter coverStep 12, regular hexagonal torque transmission step 11, one of which is sealedOuter cover The step 13 comprises two sealing grooves and two-stage sealingOuter coverThe step 12 comprises a sealing groove, a primary sealOuter coverStep 13 and secondary sealOuter coverSix water through holes are arranged between the steps 12. The drill rod female head 4 is sealed by a first stageInner partStep 43, two stage sealInner partThe step 42 and the regular hexagon torque transmission step 41 are formed, and the first-stage sealInner partStep 43 and secondary sealInner partSix water through holes are uniformly distributed among the steps 42. The rod 2 in the drill rod is of a flange structure, and the contact surface of the rod 2 in the drill rod and the drill rod male head 1 is provided withFirst of allThe contact surface of the sealing groove 21, the drill rod inner rod 2 and the drill rod female head 4 is also provided withSecond one Sealing groove 22. The drill rod outer rod 3 is sleeved on the drill rod inner rod 2, wherein the space of the drill rod inner rod 2 is a laser beam space, and a muddy water channel space is arranged between the drill rod outer rod 3 and the drill rod inner rod 2, and the embodiment is grouting muddy water or water.

As shown in fig. 2, the position of the flange structure of the drill rod inner rod 2 is a cross-sectional view, six equal-diameter holes are six water through holes, and three equal-diameter holes are connecting through holes of the drill rod inner rod 2, so that the drill rod inner rod 2 and the drill rod female head 4 can be conveniently connected by bolts.

As shown in FIG. 3, the primary seal of the drill rod male 1 can be seenOuter cover Step 13 and secondary sealOuter coverSix water through holes are arranged between the steps 12, and the steps are not limited to six water through holes and can be four or eight. The hexagonal torque transmission step 11 faces are used for torque transmission between drill rods.

As shown in FIG. 4, the primary seal of the drill rod female head 4 can be seenInner partStep 43 and secondary sealInner partSix water through holes are arranged between the steps 42, the number of the water through holes is not limited to six, the number of the water through holes is consistent with that of the drill rod male head 1 and that of the drill rod inner rod 2, and the regular hexagon torque transmission inner step 41 is used for transmitting torque between drill rods.

As shown in fig. 5, the drill rod male head 1 of the novel drill rod is inserted into the drill rod female head 4 of the adjacent drill rod, and after the fit, the surface of the regular hexagonal torque transmission outer step 11 of the drill rod male head 1 is contacted with the surface of the regular hexagonal torque transmission inner step 41 of the drill rod female head 4; two-stage sealing of drill rod male head 1Outer coverTwo-stage sealing of step 12 surface and drill rod female head 4Inner partThe surfaces of the steps 42 are contacted, and a sealing ring is hooped between the steps; primary seal of drill rod male head 1Outer coverOne-stage seal of step 13 surface and drill rod female head 4Inner partThe steps 43 are in contact with each other, and two sealing rings are hooped between the steps.

As shown in fig. 6, three positioning pin holes are arranged on the surface of the regular hexagon torque transmission outer step 11 of the drill rod male head 1, and three threaded holes are uniformly distributed on the surface of the regular hexagon torque transmission inner step 41 of the drill rod female head 4. The drill rod male head 1 is inserted into the drill rod female head 4 of the adjacent drill rod, at the moment, the regular hexagon torque transmission outer step 11 surface of the drill rod male head 1 is in contact with the regular hexagon torque transmission inner step 41 surface of the drill rod female head 4, the torque is transmitted, and the threaded positioning pin is inserted to be used for positioning and connecting the adjacent drill rods.

Novel double-walled drilling rod can completely cut off muddy water space and laser line bundle space effectively in the embodiment, uses regular hexagon's moment of torsion transmission ladder face can transmit big moment of torsion, and uses three screw thread locating pins, has effectively avoided the problem that old-fashioned double-walled drilling rod reversal was easily broken out.

The utility model discloses novel double-walled drilling rod is suitable for multiple needs of creeping into, is suitable for non-excavation spiral pipe jacking machine for example.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (5)

1. A novel double-wall guide drill rod is characterized in that: the device comprises an inner drill rod (2), an outer drill rod (3) sleeved outside the inner drill rod (2), and a male drill rod head (1) and a female drill rod head (4) which are respectively arranged at two ends of the inner drill rod (2);

at least 4 water through holes (23) are formed in the drill rod inner rod (2), and the water through holes (23) extend towards two ends and respectively penetrate through the drill rod male head (1) and the drill rod female head (4); a through hole (24) is formed in the drill rod inner rod (2), and the through hole (24) extends towards two ends and respectively penetrates through the drill rod male head (1) and the drill rod female head (4); the through hole (24) is used for guiding a laser beam;

and a mud-water channel is arranged between the drill rod inner rod (2) and the drill rod outer rod (3).

2. A novel double-walled steerable drill rod as claimed in claim 1, wherein: the drill rod inner rod (2) is connected with the drill rod male head (1) in a sealing mode through a first sealing groove (21); the drill rod inner rod (2) is connected with the drill rod female head (4) in a sealing mode through a second sealing groove (22).

3. A novel double-walled steerable drill rod as claimed in claim 2, wherein: the outer side wall of the drill rod male head (1) is provided with a regular hexagon torque transmission outer step (11), a secondary sealing outer step (12) and a primary sealing outer step (13);

and three pin holes which are positioned and connected are arranged on the regular hexagon torque transmission outer ladder (11).

4. A novel double-walled steerable drill rod as claimed in claim 3, wherein: the inner cavity of the drill rod female head (4) is provided with a regular hexagon torque transmission inner step (41), a secondary sealing inner step (42) and a primary sealing inner step (43) which are matched with the drill rod male head (1);

the regular hexagon torque transmission inner ladder (41) is provided with a threaded hole for positioning connection.

5. The novel double-walled guide drill rod of claim 4, wherein: the threaded hole is matched with the pin hole.

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