CN210483566U

CN210483566U - Drill rod and rotary drilling rig

Info

Publication number: CN210483566U
Application number: CN201921577214.XU
Authority: CN
Inventors: 位硕; 杨志权; 刘志岩
Original assignee: Beijing Sany Intelligent Technology Co Ltd
Current assignee: Beijing Sany Intelligent Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-05-08
Anticipated expiration: 2029-09-20

Abstract

The utility model provides a drilling rod and dig rig soon relates to engineering machine tool technical field. The drilling rod includes the body, welds in two at least outer keys of body and sets up the backup pad between two adjacent outer keys, and outer key includes body and butt joint portion, and butt joint portion sets up in the body towards the surface of backup pad and protruding towards the direction that is close to the backup pad, and the backup pad welds in the one side that the body was kept away from to butt joint portion, and the axial ascending length of butt joint portion at the body is not more than the axial ascending length of backup pad at the body. The rotary drilling rig comprises the drill rod. The welding seam between the outer key and the support plate of the drill rod is not easy to deform and crack, and the reliability of the drill rod of the rotary drilling rig is high.

Description

Drill rod and rotary drilling rig

Technical Field

The utility model relates to an engineering machine tool technical field particularly, relates to a drilling rod and dig rig soon.

Background

The outer wall of the drill rod of the rotary drilling rig is provided with an external key. The outer key is used for being matched with the inner key of the adjacent section rod pipe body, so that the section rod pipe body provided with the outer key is driven to rotate by the inner key of the adjacent section rod pipe body. Usually, the support plate is welded between two adjacent outer keys in the circumferential direction to improve the torque force transmission effect of the outer keys, however, the welding seam between the outer key and the support plate of the existing drill rod is easy to deform and crack, and the reliability of the drill rod is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drilling rod with dig the rig soon, the welding seam between its outer key and the backup pad is difficult to the deformation fracture, the reliability of drilling rod is higher.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment of the present invention provides a drill rod, including the body, weld in two at least outer keys of body and set up in the backup pad between two adjacent outer keys, the outer key includes body and butt joint portion, and the butt joint portion sets up in the body towards the surface of backup pad and protruding towards the direction that is close to the backup pad, and the backup pad welds in one side that the body was kept away from to the butt joint portion, and the length of butt joint portion in the axial of body is not more than the length of backup pad in the axial of body.

In an alternative embodiment, the length of the abutting portion in the axial direction of the pipe body is equal to the length of the support plate in the axial direction of the pipe body.

In an alternative embodiment, the body and the interface are integrally formed.

In an alternative embodiment, the butt joint part comprises a first side surface, a second side surface and a third side surface which are connected in sequence, the first side surface and the third side surface are arranged oppositely in the axial direction of the pipe body, the first side surface and the third side surface are respectively connected to the surface of the body facing the support plate, and the second side surface is welded with the support plate.

In an alternative embodiment, the first side and the third side are respectively connected with the surface of the body facing the support plate smoothly.

In an alternative embodiment, the first side and the third side are perpendicular to the surface of the body facing the support plate.

In an alternative embodiment, the second side surface is parallel to the surface of the body facing the support plate, and the first side surface and the third side surface are respectively at an obtuse angle with the second side surface.

In an alternative embodiment, the second side is parallel to the surface of the body facing the support plate, the first side and the second side form an obtuse angle therebetween, and the third side is perpendicular to the second side.

In an alternative embodiment, the tubular body is provided with a pressure table located on the side of the outer key remote from the support plate.

The second aspect, the embodiment of the utility model provides a dig rig soon, including above-mentioned drilling rod.

The utility model discloses beneficial effect includes:

the drilling rod includes the body, welds in two at least outer keys of body and sets up the backup pad between two adjacent outer keys, and outer key includes body and butt joint portion, and butt joint portion sets up in the body towards the surface of backup pad and protruding towards the direction that is close to the backup pad, and the backup pad welds in the one side that the body was kept away from to butt joint portion, and the axial ascending length of butt joint portion at the body is not more than the axial ascending length of backup pad at the body. The rotary drilling rig comprises the drill rod. The outer key and the backup pad of drilling rod all need carry out all-round welding all around usually, butt joint portion is established through at outer key body epirelief to this drilling rod, make butt joint portion be not more than the axial ascending length of backup pad at the body, thereby the welding seam that the relative both sides of backup pad in the axial extend along body circumference can not take place to intersect with the welding seam of butt joint portion along axial ascending formation T font welding seam overall arrangement, reduce welding residual stress and stress concentration, reduce the welding seam fracture, the drilling rod reliability of rotary drilling rig is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view (shown with a backup plate weld) of a first view of a drill rod in an embodiment of the present invention;

fig. 2 is a schematic structural view of a second view of the drill rod according to an embodiment of the present invention (the weld is not shown);

fig. 3 is an enlarged view of a portion a of fig. 2 according to an embodiment of the present invention.

Icon: 100-drill pipe; 110-a tube body; 130-an external bond; 132-a body; 133-surface; 134-a docking station; 135-a first side; 136 — a second side; 137-third side; 150-a support plate; 152-a fourth side; 153-butt weld; 154-fifth side; 155-a second circumferential weld; 160-pressure stage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "vertical", "horizontal", "inside", "outside", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A drill rod is a rod-like piece that transmits power to and along with a drill bit into a borehole. A typical drill rod is made up of a number of tubes (joints) that are nested one inside the other in sequence and that extend and retract relative to one another in sequence along a common axis, thereby changing the overall length of the drill rod. The outer key edge on the pipe body of the existing drill rod extends straightly along the longitudinal direction. During manufacturing, the outer keys are arranged at intervals along the circumferential direction of the pipe body, the peripheries of the outer keys are welded on the outer wall of the pipe body, the welding seams are basically as long as the peripheral edges of the outer keys, and therefore an axial extending axial welding seam is formed at the edge of the outer keys, extending along the axial direction of the pipe body. Then, a support plate is arranged between two adjacent outer keys in the circumferential direction of the pipe body, the periphery of the support plate is welded, and the welding seam is basically as long as the peripheral edge of the support plate, so that an axial welding seam extending along the axial direction and a circumferential welding seam oppositely arranged in the axial direction and extending along the circumferential direction are formed at the edge of the support plate, and the axial welding seam of the support plate is overlapped with the axial welding seam of the outer keys. Therefore, the circumferential welding seams at the two ends of the supporting plate are vertically intersected with the axial welding seam of the outer key to form a T-shaped welding seam layout, residual stress and stress concentration exist, the welding seam between the outer key and the supporting plate is cracked when the drill rod works easily, normal work of the drill rod is influenced, and the reliability of the drill rod is reduced.

Referring to fig. 1 and 2, to solve the above problem, the present embodiment provides a drill rod 100, which includes a tube 110, at least two outer keys 130 welded to the tube 110, and a support plate 150 disposed between two adjacent outer keys 130. The outer key 130 includes a body 132 and a docking portion 134. The abutting portion 134 is disposed on the surface 133 of the body 132 facing the supporting plate 150 and protrudes toward the supporting plate 150. The support plate 150 is welded to a side of the abutting portion 134 away from the body 132, and a length of the abutting portion 134 in the axial direction of the pipe body 110 is not greater than a length of the support plate 150 in the axial direction of the pipe body 110.

The pipe body 110 is a joint rod pipe body, which is used for being connected in the joint rod pipe body provided with an inner key, and a plurality of joint rod pipe bodies jointly form a telescopic drill rod. The pipe body 110 is hollow cylindrical.

The outer key 130 is generally elongated in the axial direction of the tubular body 110, and the outer key 130 includes a body 132 and an abutting portion 134. The body 132 has a substantially rectangular parallelepiped shape, and a long side thereof extends in the axial direction of the tube 110. The body 132 is provided with an abutting portion 134 toward the surface 133 of the support plate 150, and the abutting portion 134 is protruded in a direction close to the support plate 150, i.e., in a circumferential direction of the tube body 110. In this embodiment, the body 132 and the docking portion 134 are integrally formed for improved structural strength. In other embodiments, the body 132 and the abutting portion 134 may be connected by welding, and only the strength and stability of the structure are required to be ensured.

Referring to fig. 2 and 3, the docking portion 134 includes a first side 135, a second side 136, and a third side 137, which are connected in sequence. The first side 135 and the third side 137 are opposite to each other in the axial direction of the pipe body 110. The first side 135 and the third side 137 are respectively connected to the surface 133 of the body 132 facing the support plate 150, and the second side 136 is welded to the support plate 150. In this embodiment, the first side surface 135 and the third side surface 137 are perpendicular to the surface 133 of the body 132 facing the support plate 150, the second side surface 136 is parallel to the surface 133 of the body 132 facing the support plate 150, the length of the second side surface 136 is greater than the length of the first side surface 135 and the length of the third side surface 137, and the projection of the abutting portion 134 on the pipe body 110 is substantially rectangular. It will be appreciated that in other embodiments, the length of the second side 136 may be equal to the length of the first side 135 and the length of the third side 137, so that the projection of the docking portion 134 on the pipe body 110 is substantially square. In other embodiments, the second side 136 may not be parallel to the surface 133 of the body 132 facing the support plate 150, and only needs to be specifically configured according to the shape of the abutting edge of the support plate 150 to ensure the stable connection between the second side 136 and the support plate 150.

In other embodiments, the second side 136 may be disposed parallel to the surface 133 of the body 132 facing the support plate 150, and the first side 135 and the third side 137 respectively form an obtuse angle with the second side 136, so that the projection of the abutting portion 134 on the tube 110 is overall trapezoidal. It is understood that in other embodiments, the second side surface 136 is parallel to the surface 133 of the body 132 facing the support plate 150, the first side surface 135 and the second side surface 136 form an obtuse angle therebetween, and the third side surface 137 is perpendicular to the second side surface 136, so that the projection of the abutting portion 134 on the tube 110 has a right trapezoid shape as a whole.

In the present embodiment, to reduce the local stress, the first side surface 135 and the third side surface 137 are respectively and smoothly connected with the surface 133 of the body 132 facing the supporting plate 150. Specifically, the first side surface 135 and the surface 133 of the body 132 facing the support plate 150 form a circular arc transition, and the third side surface 137 and the surface 133 of the body 132 facing the support plate 150 also form a circular arc transition.

In manufacturing drill pipe 100, outer keys 130 are welded to pipe body 110 and are circumferentially spaced apart. The body 132 forms a first axial weld extending axially along the axially extending edge of the body 110, a first circumferential weld extending circumferentially along the body 110 at the first side 135 and the third side 137 of the interface 134, and a second axial weld extending axially along the body 110 at the second side 136 of the interface 134. No welding may be performed at the positions where the first and

third sides

135 and 137 are smoothly connected with the surface 133 of the body 132 facing the support plate 150, respectively, to avoid the first axial weld and the first circumferential weld from intersecting to generate stress concentration.

The supporting plate 150 is disposed between two adjacent outer keys 130. Specifically, the projection of the support plate 150 on the tube 110 is substantially rectangular, and the long side thereof extends in the axial direction of the tube 110. When the outer keys 130 are welded to the pipe body 110, the support plate 150 is disposed between two adjacent outer keys 130 in the circumferential direction. Two fourth side surfaces 152 of the support plate 150 opposite to each other in the circumferential direction of the tube body 110 are opposite to the second side surfaces 136 of the corresponding butting parts 134.

In the present embodiment, the length of the abutting portion 134 in the axial direction of the pipe body 110 is equal to the length of the support plate 150 in the axial direction of the pipe body 110. That is, the length of the second side surface 136 in the axial direction is equal to the length of the fourth side surface 152 in the axial direction, so that both ends of the abutting portion 134 in the axial direction of the pipe body 110 are flush with both ends of the support plate 150 in the axial direction.

When the support plate 150 is welded, two third axial welds extending axially along the tube body 110 are welded to the two fourth sides 152, and after the actual welding is completed, the third axial welds and the second axial welds overlap to form a butt weld 153. A second circumferential weld 155 extending circumferentially of the pipe body 110 is formed at two fifth sides 154 of the support plate 150 opposite in the axial direction of the pipe body 110. At this time, since the two ends of the butt joint portion 134 in the axial direction of the pipe body 110 are flush with the two ends of the support plate 150 in the axial direction, a T-shaped weld structure is not formed in a crossed manner, so that residual stress and stress concentration of the weld at the position are reduced, weld cracking is reduced, and structural stability is improved.

In other embodiments, the length of the abutting portion 134 in the axial direction of the pipe body 110 may be smaller than the length of the support plate 150 in the axial direction of the pipe body 110. Therefore, after the outer key 130 and the support plate 150 are welded to the pipe body 110, the second circumferential weld 155 does not intersect with the butt weld 153, so that a T-shaped weld structure is not formed, stress concentration at both ends of the support plate 150 in the axial direction is reduced, the probability of cracking of the weld between the butt 134 and the support plate 150 is reduced, and the structural stability is improved.

The pipe body 110 is provided with a pressurizing stage 160, the pressurizing stage 160 is located at a side of the outer key 130 away from the support plate 150, and the pressurizing stage 160 is used for contacting with an inner key of an adjacent pipe body 110 to transfer the pressure of the drill rod 100.

The embodiment also provides a rotary drilling rig, which comprises a drill rod 100. The rotary drilling rig is provided with the drill rod 100, so that the cracking probability of a welding seam between the outer key 130 of the drill rod 100 and the support plate 150 can be reduced, the drill rod 100 is high in stability, and the working efficiency can be effectively improved.

The working principle of the drill rod 100 is as follows:

the drill rod 100 includes a pipe body 110, at least two outer keys 130 welded to the pipe body 110, and a support plate 150 disposed between adjacent two outer keys 130. The outer key 130 includes a body 132 and a docking portion 134. The abutting portion 134 is disposed on the surface 133 of the body 132 facing the supporting plate 150 and protrudes toward the supporting plate 150. The support plate 150 is welded to a side of the abutting portion 134 away from the body 132, and a length of the abutting portion 134 in the axial direction of the pipe body 110 is equal to a length of the support plate 150 in the axial direction of the pipe body 110. Thus, in manufacturing drill pipe 100, outer key 130 is first welded to tube body 110, forming a second axial weld extending axially along tube body 110 at second side 136 of interface 134. Then, the support plate 150 is welded, two third axial weld seams extending axially along the tube body 110 are formed at the two fourth side surfaces 152 by welding, and after the actual welding is completed, the third axial weld seams and the second axial weld seams are overlapped together to form a butt weld seam 153; a second circumferential weld 155 extending circumferentially of the pipe body 110 is formed at two fifth sides 154 of the support plate 150 opposite in the axial direction of the pipe body 110. At this time, because the two ends of the butt joint part 134 in the axial direction of the pipe body 110 are flush with the two ends of the support plate 150 in the axial direction, a T-shaped welding seam structure cannot be formed in a crossed manner, the residual stress and stress concentration of the welding seam at the position are effectively reduced, the welding seam cracking is reduced, the stability of the structure of the drill rod 100 is improved, and the influence on the working efficiency and the drilling effect is avoided.

Drilling rod 100 is through set up butt joint portion 134 at outer key 130 body 132 epirelief, make butt joint portion 134 be not more than the axial ascending length of backup pad 150 at body 110, thereby the axial welding seam that extends along body 110 circumference of backup pad 150 in the relative both sides can not take place to intersect with butt joint portion 134 along the axial ascending welding seam and form T font welding seam overall arrangement, reduce welding residual stress and stress concentration, reduce the welding seam fracture, improve the reliability of drilling rod 100, avoid influencing normal work, improve the work efficiency of rotary drilling rig.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a drill rod, its characterized in that includes the body, weld in at least two outer keys of body and set up in adjacent two backup pad between the outer key, outer key includes body and butt joint portion, butt joint portion set up in the body orientation the surface of backup pad and towards being close to the direction of backup pad is protruding, the backup pad weld in butt joint portion keeps away from one side of body, butt joint portion is in the ascending length in the axial of body is not more than the backup pad is in the ascending length in the axial of body.

2. The drill rod as claimed in claim 1, wherein the length of the butt section in the axial direction of the pipe body is equal to the length of the support plate in the axial direction of the pipe body.

3. A drill rod according to claim 1, wherein the body and the interface are integrally formed.

4. The drill rod as claimed in claim 1, wherein the butt joint part comprises a first side surface, a second side surface and a third side surface which are connected in sequence, the first side surface and the third side surface are oppositely arranged in the axial direction of the pipe body, the first side surface and the third side surface are respectively connected to the surface of the body facing the support plate, and the second side surface is welded with the support plate.

5. The drill pipe as claimed in claim 4 wherein the first side and the third side are each smoothly connected with a surface of the body facing the support plate.

6. A drill rod according to claim 4, characterized in that the first side, the third side are each perpendicular to the surface of the body facing the support plate.

7. The drill pipe as claimed in claim 4, wherein the second side is parallel to the surface of the body facing the support plate, and the first side and the third side are at an obtuse angle to the second side.

8. A drill rod according to claim 4, characterized in that the second side is parallel to the surface of the body facing the support plate, the first side and the second side being at an obtuse angle therebetween, the third side being perpendicular to the second side.

9. A drill rod according to claim 1, characterized in that the tubular body is provided with a pressure table on the side of the outer key remote from the support plate.

10. A rotary drilling rig comprising a drill rod according to any one of claims 1 to 9.