CN211439823U - Pipe taking tool - Google Patents
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- CN211439823U CN211439823U CN201921797390.4U CN201921797390U CN211439823U CN 211439823 U CN211439823 U CN 211439823U CN 201921797390 U CN201921797390 U CN 201921797390U CN 211439823 U CN211439823 U CN 211439823U
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Abstract
The utility model provides a get a tub instrument. The utility model discloses a pipe taking tool is used for taking off the broken threaded pipe from the main body, and comprises a drill bit and a handle for rotating the drill bit; the head of the drill bit is provided with a conical part, the conical part can partially extend into the broken threaded pipe, a spiral cutting edge is arranged on the conical surface of the conical part, and the rotating direction of the cutting edge is opposite to that of the thread of the broken threaded pipe; the handle is connected with the tail of the drill bit, and the handle can drive the drill bit to rotate around the axis of the drill bit, so that the cutting edge cuts corresponding grains on the inner wall of the broken threaded pipe. The utility model discloses can take out fracture screwed pipe and can not damage the main part.
Description
Technical Field
The utility model relates to a hand tool field especially relates to a get pipe tool.
Background
In the field of oil and gas production, there are many connection modes between pipelines and parts, one of which is to connect a pipeline with external threads and a main part with internal threads in a thread fit manner, and the connection mode is commonly used on a pressure-leading pilot conduit line of a high-pressure pilot safety valve, a pressure-leading detection pipeline of some equipment, and the like. In the process of actual installation and use, a section of pipeline with external threads is directly connected with a main part through threads, however, when the pipe section is screwed and unscrewed or the internal pressure of the pipeline is too high, the problem that the thread section of the pipeline is broken at the joint and is left in the threaded hole of the main part often occurs, the diameter of the pipeline is small, the broken part of the pipeline is difficult to take out, and if the broken part of the pipeline is left in the threaded hole of the matched main part all the time, the main part cannot be used continuously.
In the prior art, when a broken part of a pipeline is taken out, an iron rod or other usable objects with a diameter slightly larger than the inner diameter of the pipeline are randomly found, an inner hole of the broken part of the pipeline is knocked in, and then the part, exposed outside, of the iron rod or other usable objects is rotated by a tool to try to take out the broken part of the pipeline left in a threaded hole of a main body part.
The iron rod or other usable objects used in the above-mentioned taking-out mode are easy to damage the screw hole of the main body part, so that the main body part cannot be used continuously.
SUMMERY OF THE UTILITY MODEL
The utility model provides a get a tub instrument can take out fracture screwed pipe and can not damage the main part.
The utility model provides a pipe taking tool, which is used for taking a broken threaded pipe off a main body and comprises a drill bit and a handle for rotating the drill bit; the head of the drill bit is provided with a conical part, the conical part can partially extend into the broken threaded pipe, a spiral cutting edge is arranged on the conical surface of the conical part, and the rotating direction of the cutting edge is opposite to that of the thread of the broken threaded pipe; the handle is connected with the tail of the drill bit, and the handle can drive the drill bit to rotate around the axis of the drill bit, so that the cutting edge cuts corresponding grains on the inner wall of the broken threaded pipe.
In the tube extracting tool as described above, the cutting edge is optionally recessed in the tapered surface or protruded out of the tapered surface.
In the pipe taking tool as described above, optionally, the tail of the drill bit is detachably connected with the handle.
As for the pipe taking tool, optionally, the tail of the drill bit is provided with a positioning column protruding along the axial direction of the drill bit, and the cross section of the positioning column is a non-circular surface; the first end of the handle is provided with a positioning groove matched with the positioning column in shape, and the second end of the handle is a handheld end.
In the pipe taking tool as described above, optionally, the cross section of the positioning pillar is polygonal.
In the pipe removing tool as described above, optionally, the maximum outer diameter of the tapered portion is larger than the inner diameter of the broken threaded pipe.
In the tube drawing tool as described above, the cutting edge on the tapered surface may have an isosceles trapezoid cross-sectional shape.
As mentioned above, the bottom angle of the isosceles trapezoid is between 40-50 degrees.
In the pipe taking tool as described above, optionally, the hardness of the material of the drill bit is greater than the hardness of the material of the broken threaded pipe.
As with the pipe removal tool described above, the drill bit is optionally a steelwork formed of an alloy tool steel.
The utility model discloses a pipe taking tool, which is used for taking off a broken threaded pipe from a main body and comprises a drill bit and a handle for rotating the drill bit; the head of the drill bit is provided with a conical part, the conical part can partially extend into the broken threaded pipe, a spiral cutting edge is arranged on the conical surface of the conical part, and the rotating direction of the cutting edge is opposite to that of the thread of the broken threaded pipe; the handle is connected with the tail of the drill bit, and the handle can drive the drill bit to rotate around the axis of the drill bit, so that the cutting edge cuts corresponding grains on the inner wall of the broken threaded pipe. So that the broken threaded pipe can be taken out without damaging the main body parts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of a tube taking tool according to a first embodiment of the present invention;
fig. 2A is a schematic structural view of a first handle according to an embodiment of the present invention;
fig. 2B is a schematic structural view of a second handle according to an embodiment of the present invention;
fig. 2C is a schematic structural view of a third handle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fourth handle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a drill according to an embodiment of the present invention;
FIG. 5 is an enlarged sectional view taken at A in FIG. 1;
fig. 6 is an enlarged sectional view taken at B in fig. 4.
Description of reference numerals:
10: a drill bit;
11: a tapered portion;
12: a positioning column;
13: a groove;
20: a handle;
21: positioning a groove;
22: a handheld end;
23: a projection;
30: breaking the threaded pipe;
40: a body part;
111: a cutting edge;
111 a: a bottom corner.
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. 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.
Example one
Fig. 1 is a schematic structural view of a tube taking tool according to an embodiment of the present invention. As shown in fig. 1, the present embodiment provides a pipe removing tool for removing a broken threaded pipe from a main body, the pipe removing tool including a drill 10 and a handle 20 for rotating the drill 10; the head of the drill 10 is provided with a conical part 11, the conical part 11 can partially extend into the interior of the broken threaded pipe 30, a spiral cutting edge 111 is arranged on the conical surface of the conical part 11, and the thread direction of the cutting edge 111 is opposite to that of the broken threaded pipe 30; the handle 20 is connected to the tail of the drill 10, and the handle 20 can drive the drill 10 to rotate around its axis, so that the cutting edge 111 can cut corresponding lines on the inner wall of the broken threaded pipe 30.
When the pipe taking tool is practically used, firstly, after the conical part of the drill 10 is aligned with the inner hole of the broken threaded pipe 30, the conical part 11 of the drill 10 is partially inserted into the broken threaded pipe 30, and the tail part of the drill 10 is lightly knocked by the tool so as to gradually embed the conical part 11 of the drill 10 into the inner hole of the broken threaded pipe 30, in the process, the inner hole wall of the broken threaded pipe 30 is gradually deformed under the extrusion of the conical part 11 of the drill 10 and is embedded into the cutting edge 111 on the surface of the conical part 11, so that the drill 10 is fully contacted with the inner hole of the broken threaded pipe 30, and the friction force is increased; then, the drill 10 is driven by the handle 20 to rotate in the direction of screwing the broken threaded pipe 30 out of the main body part 40, and since the rotation direction of the cutting blade 111 is opposite to the rotation direction of the broken threaded pipe 30, the cutting blade 111 gradually screws into the broken threaded pipe 30 or has a tendency to screw into the broken threaded pipe 30 in the process of screwing the broken threaded pipe 30 out of the main body part 40 by the handle, so that the cutting blade 111 on the surface of the tapered part 11 of the drill 10 further cuts and inserts into the inner hole wall of the broken threaded pipe 30, thereby further increasing the friction force between the cutting blade on the surface of the tapered part of the drill and the inner hole wall of the broken threaded pipe, preventing the drill 10 from loosening and falling off before the broken threaded pipe 30 is not taken out yet, ensuring that the broken threaded pipe 30 can be smoothly screwed out of the main body part 40, and not damaging the main body part 40.
The connection between the tail of the drill bit 10 and the handle 20 may be non-detachable, such as welding, etc.; or may be a detachable connection. The detachable connection between the rear of the drill bit 10 and the handle 20 includes, but is not limited to, the following two possible implementations:
fig. 2A is a schematic structural view of a first handle according to an embodiment of the present invention. Fig. 2B is a schematic structural diagram of a second handle according to an embodiment of the present invention. Fig. 2C is a schematic structural diagram of a third handle according to the first embodiment of the present invention. As shown in fig. 2A-2C, one possible implementation is: the tail part of the drill 10 is provided with a positioning column 12 which protrudes along the axial direction of the drill 10, and the cross section of the positioning column 12 is a non-circular surface (a quadrangle is taken as an example in fig. 2A-2C); the first end of the handle 20 has a positioning slot 21 matching the shape of the positioning column 12, and the second end of the handle 20 is a holding end 22. The positioning groove 21 of the handle 20 can be sleeved on the positioning column 12, and the holding end 22 of the holding handle 20 is held to rotate the handle 20, so that the drill 10 can be driven to rotate through the matching surface of the positioning groove 21 and the positioning column 12.
Positioning slots 21 (shown as a square in fig. 2A-2C) on handle 20 that match the cross-sectional shape of positioning posts 12 include, but are not limited to, the following three possible implementations:
as shown in fig. 2A, a first possible implementation manner is: the positioning groove 21 on the handle 20, which is matched with the cross section of the positioning column 12, is a through hole perpendicular to the extending direction of the handle 20, and the handle 20 is sleeved on the positioning column 12 at the tail of the drill 10 through the through hole to drive the drill 10 to rotate.
As shown in fig. 2B, a second possible implementation is: the positioning groove 21 on the handle 20, which is matched with the cross section of the positioning column 12 in shape, is a groove with an opening on one side surface of the through hole, and the handle 20 can be sleeved on the positioning column 12 at the tail of the drill 10 through the semi-surrounded opening on the side surface of the through hole, so as to drive the drill 10 to rotate.
As shown in fig. 2C, a third possible implementation manner is that the positioning groove 21 on the handle 20, which matches with the cross-sectional shape of the positioning column 12, is a blind hole perpendicular to the extending direction of the handle 20, and the handle 20 sleeves an end of an opening of the blind hole on the positioning column 12 at the tail of the drill 10 to drive the drill 10 to rotate.
The three possible implementation manners of the positioning slot 21 on the handle 20 may be combined with each other according to actual needs without conflict, and for the combined specific implementation manner, reference is made to the description of the three possible implementation manners, and details are not described here again.
The cross-sectional shape of the positioning post 12 may be polygonal, for example: a convex polygon or a concave polygon; for convenience of processing and measurement, the cross-sectional shape of the positioning column 12 may be provided as a regular polygon, for example: a regular quadrangle, a regular hexagon, a regular triangle, or the like; in addition, the cross-sectional shape of the positioning post 12 may also be semicircular, or other non-circular shapes.
The detachable connection between the rear of the drill bit 10 and the handle 20 allows for the use of existing tools, such as: a tool such as a monkey wrench or a vise rotates the drill 10 instead of the handle 20.
Fig. 3 is a schematic structural diagram of a fourth handle according to the first embodiment of the present invention. As shown in fig. 3, another possible implementation is: a groove 13 is formed in the tail portion of the drill 10 along the axial direction of the drill 10, and the cross-sectional shape of the groove 13 may be a non-circular shape such as a polygon (illustrated by a square in fig. 3), for example: the cross-sectional shape of the groove 13 may be triangular, quadrangular, hexagonal, or the like; the first end of the handle 20 has a protrusion 23 matching the cross-sectional shape of the recess 13 at the rear of the drill bit 10 and the second end of the handle 20 is a gripping end 22. The protrusion 23 of the handle 20 can be inserted into the groove 13 at the tail of the drill 10, and the holding end 22 of the handle 20 is held to rotate the handle 20, so that the drill 10 can be driven to rotate by the matching surface of the protrusion 23 of the handle 20 and the groove 13 at the tail of the drill 10.
Further, the maximum outer diameter of the tapered portion 11 of the drill bit 10 is larger than the inner diameter of the fractured screw tube 30, so that the drill bit 10 is prevented from being totally submerged into the fractured screw tube 30 during use, and the fractured screw tube 30 is prevented from being taken out unsuccessfully.
Fig. 4 is a schematic structural diagram of a drill according to an embodiment of the present invention. Fig. 5 is an enlarged sectional view taken at a in fig. 1. Fig. 6 is an enlarged sectional view taken at B in fig. 4. Referring to fig. 1, 4, 5 and 6, the spiral cutting edge 111 provided on the tapered surface of the tapered portion 11 of the drill 10 may be recessed in a groove shape in the tapered surface of the tapered portion 11 (as shown in fig. 5) or may be protruded out of the tapered surface of the tapered portion 11 (as shown in fig. 6).
The cross-sectional shape (trapezoidal shape is illustrated in the figures) of the cutting edge 111 on the tapered surface includes, but is not limited to, an isosceles trapezoid, and may be any shape that can achieve the function of cutting the broken threaded pipe 30, such as a triangle, a rectangle, or a sawtooth shape, and is not limited herein.
Here, when the cross-sectional shape of the cutting edge 111 is an isosceles trapezoid, in order to ensure the cutting effect of the cutting edge 111, an angle of a base angle 111a of the isosceles trapezoid may be set to be between 40 degrees and 50 degrees, for example, the angle of the base angle 111a may be set to: 40 degrees, 45 degrees, 50 degrees, etc. The angle of the base angle 111a of the isosceles trapezoid includes but is not limited to the above range, and the specific angle of the base angle 111a may be determined according to actual needs, and is not limited herein.
After the tapered portion 11 of the drill bit 10 is tapped into the interior of the broken threaded pipe 30, the cutting edge 111 on the surface of the tapered portion 11 needs to be cut and embedded into the inner hole wall of the broken threaded pipe 30, so that the drill bit 10 is in sufficient contact with the inner hole of the broken threaded pipe 30 to increase the friction force and facilitate the removal of the broken threaded pipe 30 from the main body part 40. In order to enable the cutting edge 111 on the surface of the tapered portion 11 of the drill 10 to smoothly cut the broken threaded pipe 30 and to be embedded into the inner hole wall of the broken threaded pipe 30, the hardness of the material of the drill 10 may be greater than that of the material of the broken threaded pipe 30, so that on one hand, the success rate of taking out the broken threaded pipe 30 by the drill 10 can be ensured, on the other hand, the drill 10 is not damaged, the effect of the drill 10 in subsequent use is ensured, and the cost is saved.
Generally, the drill 10 may be a steel product made of T10A alloy tool steel, and the T10A alloy tool steel has high strength and good wear resistance, and is suitable for manufacturing various tools which have poor cutting conditions and high requirements on wear resistance, require certain toughness and have sharp edges, such as turning tools, planing tools, drill bits and the like. Therefore, the process of taking out the broken threaded pipe by the drill 10 can be more smoothly performed and the service life can be longer by manufacturing the drill 10 by using the T10A alloy tool.
The pipe taking tool of the embodiment is used for taking off a broken threaded pipe from a main body, and comprises a drill bit 10 and a handle 20 for rotating the drill bit 10; the head of the drill 10 is provided with a conical part 11, the conical part 11 can partially extend into the interior of the broken threaded pipe 30, a spiral cutting edge 111 is arranged on the conical surface of the conical part 11, and the thread direction of the cutting edge 111 is opposite to that of the broken threaded pipe 30; the handle 20 is connected to the tail of the drill 10, and the handle 20 can drive the drill 10 to rotate around its axis, so that the cutting edge 111 can cut corresponding lines on the inner wall of the broken threaded pipe 30. When the pipe taking tool is used, the conical part of the drill bit extends into an inner hole of the broken threaded pipe, the cutting edge on the surface of the conical part of the drill bit is gradually cut and embedded into the inner hole wall of the broken threaded pipe by knocking the tail part of the drill bit, the cutting edge is fully contacted with the inner hole of the broken threaded pipe, and the friction force between the cutting edge on the surface of the conical part of the drill bit and the inner hole wall of the broken threaded pipe is increased; then the drill bit is driven by the handle to rotate along the direction of screwing the broken threaded pipe out of the main part, so that the broken threaded pipe is gradually screwed out of the main part. Furthermore, the pipe taking tool is opposite to the thread turning direction of the broken threaded pipe by arranging the cutting edge, so that the cutting edge is gradually screwed into the broken threaded pipe or has a tendency of screwing into the broken threaded pipe in the process that the broken threaded pipe is screwed out of the main part by the handle, the cutting edge on the surface of the conical part of the drill bit is further cut and embedded into the inner hole wall of the broken threaded pipe, the friction force between the cutting edge on the surface of the conical part of the drill bit and the inner hole wall of the broken threaded pipe is further increased, the drill bit is prevented from loosening and falling off before the broken threaded pipe is not taken out, the broken threaded pipe can be smoothly screwed out of the main part, and the main part cannot be damaged.
Example two
A specific embodiment is given below in conjunction with the first embodiment and the practical application, so as to describe the technical solution of the pipe taking tool shown in fig. 1 in more detail.
As shown in fig. 1, the present embodiment provides a pipe removing tool for removing a broken threaded pipe from a main body, the pipe removing tool including a drill 10 and a handle 20 for rotating the drill 10; the head of the drill 10 is provided with a conical part 11, the conical part 11 can partially extend into the interior of the broken threaded pipe 30, a spiral cutting edge 111 is arranged on the conical surface of the conical part 11, and the thread direction of the cutting edge 111 is opposite to that of the broken threaded pipe 30; the handle 20 is connected to the tail of the drill 10, and the handle 20 can drive the drill 10 to rotate around its axis, so that the cutting edge 111 can cut corresponding lines on the inner wall of the broken threaded pipe 30.
The tail of the drill 10 is detachably connected with the handle 20, the specific connection mode is as shown in fig. 2A, the tail of the drill 10 is provided with a positioning column 12 protruding along the axial direction of the drill 10, and the cross section of the positioning column 12 is in a shape of a quadrangle; the first end of the handle 20 is provided with a regular quadrilateral positioning groove 21 matched with the positioning column 12 in shape, the positioning groove 21 is a through hole vertical to the extending direction of the handle 20, the second end of the handle 20 is a handheld end 22, and the handheld end 22 is polished to prevent hands from being injured; the positioning groove 21 of the handle 20 can be sleeved on the positioning column 12, and the holding end 22 of the holding handle 20 is held to rotate the handle 20, so that the drill 10 can be driven to rotate through the matching surface of the positioning groove 21 and the positioning column 12.
A spiral cutting edge 111 provided on the tapered surface of the tapered portion 11 of the drill 10 is recessed in a groove-like manner in the tapered surface of the tapered portion 11 (see fig. 1 and 5); the cross-sectional shape of the cutting edge 111 on the tapered surface is an isosceles trapezoid, and the angle of two base angles 111a of the isosceles trapezoid is 45 degrees.
The drill bit 10 is a steelwork formed from T10A alloy tool steel.
The pipe taking tool of the embodiment is used for taking off a broken threaded pipe from a main body, and comprises a drill bit 10 and a handle 20 for rotating the drill bit 10; the head of the drill 10 is provided with a conical part 11, the conical part 11 can partially extend into the interior of the broken threaded pipe 30, a spiral cutting edge 111 is arranged on the conical surface of the conical part 11, and the thread direction of the cutting edge 111 is opposite to that of the broken threaded pipe 30; the handle 20 is connected to the tail of the drill 10, and the handle 20 can drive the drill 10 to rotate around its axis, so that the cutting edge 111 can cut corresponding lines on the inner wall of the broken threaded pipe 30. When the pipe taking tool is used, the conical part of the drill bit extends into an inner hole of a broken threaded pipe, the cutting edge on the surface of the conical part of the drill bit is used for cutting the inner hole wall of the broken threaded pipe gradually by knocking the tail part of the drill bit, so that the inner hole wall of the broken threaded pipe is deformed and embedded into the groove-shaped cutting edge on the surface of the conical part of the drill bit, the drill bit is fully contacted with the inner hole of the broken threaded pipe, and the friction force between the cutting edge on the surface of the conical part of the drill bit and the inner hole wall of the broken; then the drill bit is driven by the handle to rotate along the direction of screwing the broken threaded pipe out of the main part, so that the broken threaded pipe is gradually screwed out of the main part. Furthermore, the pipe taking tool is opposite to the thread turning direction of the broken threaded pipe by arranging the cutting edge, so that the cutting edge is gradually screwed into the broken threaded pipe or has a tendency of screwing into the broken threaded pipe in the process that the broken threaded pipe is screwed out of the main part by the handle, the cutting edge on the surface of the conical part of the drill bit is further cut and embedded into the inner hole wall of the broken threaded pipe, the friction force between the cutting edge on the surface of the conical part of the drill bit and the inner hole wall of the broken threaded pipe is further increased, the drill bit is prevented from loosening and falling off before the broken threaded pipe is not taken out, the broken threaded pipe can be smoothly screwed out of the main part, and the main part cannot be damaged. The drill bit is made of T10A alloy tool steel, and the hardness of the T10A alloy tool steel is greater than that of the material of a common broken threaded pipe, so that on one hand, the success rate of taking out the broken threaded pipe by the drill bit is guaranteed, on the other hand, the broken threaded pipe cannot wear the drill bit, and the cost is saved.
EXAMPLE III
In the following, a specific embodiment is given to explain the technical solution of the pipe-taking tool shown in fig. 4 in more detail by combining the first embodiment with the practical application.
Referring to fig. 1 and 4, the present embodiment provides a pipe removing tool for removing a broken threaded pipe from a body, the pipe removing tool including a drill 10 and a handle 20 for rotating the drill 10; the head of the drill 10 is provided with a conical part 11, the conical part 11 can partially extend into the interior of the broken threaded pipe 30, a spiral cutting edge 111 is arranged on the conical surface of the conical part 11, and the thread direction of the cutting edge 111 is opposite to that of the broken threaded pipe 30; the handle 20 is connected to the tail of the drill 10, and the handle 20 can drive the drill 10 to rotate around its axis, so that the cutting edge 111 can cut corresponding lines on the inner wall of the broken threaded pipe 30.
The tail of the drill 10 is detachably connected with the handle 20, the specific connection mode is as shown in fig. 2B, the tail of the drill 10 is provided with a positioning column 12 protruding along the axial direction of the drill 10, and the cross section of the positioning column 12 is in a regular hexagon shape; the handle 20 is an adjustable wrench, and adjustable wrenches with different lengths can be selected according to requirements; the opening at the head of the adjustable wrench is clamped on the positioning column 12, the handle of the adjustable wrench is held by hand to rotate the adjustable wrench, and the drill bit 10 can be driven to rotate through the matching surface between the opening at the head of the adjustable wrench and the positioning column 12.
The spiral cutting edge 111 provided on the tapered surface of the tapered portion 11 of the drill 10 is protruded outside the tapered surface of the tapered portion 11 (as shown in fig. 4 and 6); the cross-sectional shape of the cutting edge 111 on the tapered surface is an isosceles trapezoid, and the angle of two base angles 111a of the isosceles trapezoid is 45 degrees.
The drill bit 10 is a steelwork formed from T10A alloy tool steel.
The pipe taking tool of the embodiment is used for taking off a broken threaded pipe from a main body, and comprises a drill bit 10 and a handle 20 for rotating the drill bit 10; the head of the drill 10 is provided with a conical part 11, the conical part 11 can partially extend into the interior of the broken threaded pipe 30, a spiral cutting edge 111 is arranged on the conical surface of the conical part 11, and the thread direction of the cutting edge 111 is opposite to that of the broken threaded pipe 30; the handle 20 is connected to the tail of the drill 10, and the handle 20 can drive the drill 10 to rotate around its axis, so that the cutting edge 111 can cut corresponding lines on the inner wall of the broken threaded pipe 30. When the pipe taking tool is used, the conical part of the drill bit extends into an inner hole of the broken threaded pipe, the cutting edge on the surface of the conical part of the drill bit is gradually cut and embedded into the inner hole wall of the broken threaded pipe by knocking the tail part of the drill bit, the cutting edge is fully contacted with the inner hole of the broken threaded pipe, and the friction force between the cutting edge on the surface of the conical part of the drill bit and the inner hole wall of the broken threaded pipe is increased; then the drill bit is driven by the adjustable wrench to rotate along the direction of screwing the broken threaded pipe out of the main part, so that the broken threaded pipe is gradually screwed out of the main part. Furthermore, the pipe taking tool is opposite to the thread turning direction of the broken threaded pipe by arranging the cutting edge, so that the cutting edge is gradually screwed into the broken threaded pipe or has a tendency of screwing into the broken threaded pipe in the process that the broken threaded pipe is screwed out of the main part by the handle, the cutting edge on the surface of the conical part of the drill bit is further cut and embedded into the inner hole wall of the broken threaded pipe, the friction force between the cutting edge on the surface of the conical part of the drill bit and the inner hole wall of the broken threaded pipe is further increased, the drill bit is prevented from loosening and falling off before the broken threaded pipe is not taken out, the broken threaded pipe can be smoothly screwed out of the main part, and the main part cannot be damaged. The drill bit is made of T10A alloy tool steel, and the hardness of the T10A alloy tool steel is greater than that of the material of a common broken threaded pipe, so that on one hand, the success rate of taking out the broken threaded pipe by the drill bit is guaranteed, on the other hand, the broken threaded pipe cannot wear the drill bit, and the cost is saved. In addition, the cross section of the positioning column at the tail part of the drill bit is in a regular hexagon shape, so that the positioning column can be matched with various existing tools to be used as handles under the condition that the handles are not available.
In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A pipe removal tool for removing a broken threaded pipe from a body, the pipe removal tool comprising a drill bit and a handle for rotating the drill bit;
the head of the drill bit is provided with a conical part, the conical part can partially extend into the broken threaded pipe, a spiral cutting edge is arranged on the conical surface of the conical part, and the cutting edge is opposite to the thread direction of the broken threaded pipe;
the handle is connected with the tail of the drill bit, and the handle can drive the drill bit to rotate around the axis of the drill bit, so that the cutting edge cuts corresponding lines on the inner wall of the broken threaded pipe.
2. The tool of claim 1, wherein the cutting edge is recessed within the cone or protruding outside of the cone.
3. The tool of claim 2, wherein the tail of the drill bit is removably connected to the handle.
4. The tool of claim 3, wherein the tail of the drill bit has a positioning post projecting axially along the drill bit, the positioning post having a non-circular cross-section; the first end of the handle is provided with a positioning groove matched with the positioning column in shape, and the second end of the handle is a handheld end.
5. The tool of claim 4, wherein the cross-section of the locating post is polygonal.
6. The tool of any one of claims 1-5, wherein the maximum outer diameter of the tapered portion is greater than the inner diameter of the fractured threaded tubular.
7. The tool of any one of claims 1-5, wherein the cutting edge on the tapered surface has a cross-sectional shape that is an isosceles trapezoid.
8. The tool of claim 7, wherein the base angle of the isosceles trapezoid is between 40-50 degrees.
9. The tool of any one of claims 1-5, wherein the hardness of the material of the drill bit is greater than the hardness of the material of the fractured threaded tubular.
10. The tool of claim 9, wherein the drill bit is a steelwork formed of an alloy tool steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797390.4U CN211439823U (en) | 2019-10-24 | 2019-10-24 | Pipe taking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797390.4U CN211439823U (en) | 2019-10-24 | 2019-10-24 | Pipe taking tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211439823U true CN211439823U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921797390.4U Active CN211439823U (en) | 2019-10-24 | 2019-10-24 | Pipe taking tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112706123A (en) * | 2019-10-24 | 2021-04-27 | 中国石油天然气股份有限公司 | Pipe taking tool |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112706123A (en) * | 2019-10-24 | 2021-04-27 | 中国石油天然气股份有限公司 | Pipe taking tool |
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