Auxiliary tool for freeing a drill pipe

Abstract

This utility model relates to the field of construction equipment technology, and more specifically to an auxiliary tool for untangling drill rods, comprising: an impactor, one end of which has an impact drill bit that reciprocates to generate an outward impact; and a drill rig connector that rotates synchronously with the impactor at the other end; a drill rod connector, one end of which has a drill bit mating hole, and the other end of which has a drill rod mating portion that is detachably threaded to a threaded structure; a drill rig connector is provided at the end of the drill rig connector away from the impactor, which is configured to provide a detachable transmission connection to the drill rig's shaft, so that the shaft drives the drill rig connector to rotate; the end of the impact drill bit is inserted into the drill bit mating hole and can abut against the bottom wall, and the drill rod connector is configured to rotate synchronously with the impactor, so that when the drill rig connector drives the drill rod connector to rotate through the impactor, the drill rod mating portion can rotate and be threaded to the threaded structure.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and more specifically to a tool for freeing drill rods from getting stuck. Background Technology

[0002] During tunnel construction, procedures such as advance drilling and advance grouting are key means to ensure construction safety and project quality. They can explore the geological conditions ahead and reinforce unfavorable strata, providing important support for the smooth excavation of the tunnel. These procedures require drilling the drill rod into the strata for tens or even hundreds of meters under complex and variable harsh geological conditions (such as loose and fractured strata, water-rich strata, etc.).

[0003] As drilling depth increases, disturbances in the formation can lead to necking, collapse, and other special conditions, which can cause the drill pipe and drill bit to become trapped and stuck. At this point, significant static friction is generated between the drill pipe and the surrounding formation. Simply relying on the drilling rig to continuously rotate the drill pipe is often insufficient to overcome this friction and achieve the required axial movement. For example, when retracting the drill pipe, because it is stuck, simply rotating it with the drilling rig cannot effectively release the formation's constraint, making it difficult to free the drill pipe. This not only hinders the construction process but may also lead to other engineering risks due to prolonged stagnation, significantly reducing overall construction efficiency and increasing construction costs. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing an auxiliary tool to help drilling rigs more effectively free drill rods and improve overall construction efficiency.

[0005] The overall technical solution of this utility model is as follows:

[0006] This utility model addresses the problem of poor untangling effect and low construction efficiency when using existing drilling rigs to free stuck drill rods. Specifically:

[0007] During tunnel construction, drill rods are often connected to the shaft of drilling rigs. These drill rods are driven into the ground or mountain strata to facilitate subsequent construction. However, during actual drilling operations, the drill rods can easily become stuck in the soil, making them impossible to remove. Simply rotating the drill rod by the rig is insufficient to free the rig, hindering construction and reducing efficiency. Therefore, auxiliary tools are needed to enhance the rig's ability to free itself from stuck positions.

[0008] Based on this, the present invention provides an auxiliary tool suitable for untangling drill rods with threaded structures at the tail end, and for assisting drilling rigs in more effectively untangling the drill rods, thereby improving overall construction efficiency.

[0009] Specifically, the auxiliary tool for freeing the drill pipe in this utility model includes:

[0010] An impactor, having at one end a reciprocating drill bit that generates an outward impact; and at the other end a drill rig connector that rotates synchronously with the impactor.

[0011] The drill pipe connector has a drill bit mating hole at one end and a drill pipe mating part at the other end for detachable threaded connection with the threaded structure.

[0012] The drill rig connector is provided with a drill rig connection part at the end away from the impactor, which is configured to provide a detachable transmission connection to the drill rig's shaft so that the shaft drives the drill rig connector to rotate.

[0013] The end of the impact drill bit is inserted into the drill bit mating hole and abuts against the bottom wall, and the drill rod connector is configured to rotate synchronously with the impactor, so that:

[0014] When the drill rig connector drives the drill rod connector to rotate via the impactor, the drill rod mating part can rotate and be screwed into the threaded structure.

[0015] The above solution provides an auxiliary tool for freeing the drill rod, which is installed between the drill rig spindle and the locked drill rod and can transmit the rotational torque of the drill rig spindle to the locked drill rod. This auxiliary tool has an impactor that can provide an impact effect. Through the impact of the impactor, the drill rig spindle is connected to the locked drill rod through the auxiliary tool, and when the drill rig spindle drives the locked drill rod through the auxiliary tool, the impactor can simultaneously provide a continuous impact on the drill rod. This allows the drill rod to impact and drill through the soil or rock layer that has locked it, more effectively expanding the space in which the drill rod can move and enabling the drill rod to free itself more quickly, thereby improving the overall construction efficiency.

[0016] In some embodiments, a spline connection is formed between the impact drill bit and the inner wall of the drill bit mating hole, so that:

[0017] The impact drill bit can be inserted into the drill bit mating hole to drive the drill rod connector to rotate, and it can also be pulled out of the drill bit mating hole. The "spline connection" design ensures reliable torque transmission between the impact drill bit and the drill bit mating hole (ensuring the drill rod connector rotates synchronously with the impactor), while also allowing the impact drill bit to extend and retract axially (meeting the impact action requirements). Simultaneously, the spline structure facilitates the insertion and removal of the impact drill bit from the drill bit mating hole, balancing transmission reliability and ease of assembly and disassembly.

[0018] In some implementations, the drill pipe connector is equipped with an venting channel, one end of which communicates with the interior of the drill bit's mating hole, and the other end extends to the outer surface of the drill pipe connector and communicates with the external space of the drill pipe connector. By providing an venting channel, the interior of the drill bit's mating hole is connected to the external space of the drill pipe connector, allowing compressed air accumulated in the hole during the impact process to be discharged in a timely manner. This prevents excessive air pressure from hindering the extension and retraction of the impact drill bit, ensuring smooth impact action and improving the stability of the impact effect. Simultaneously, in schemes requiring water injection for construction, the venting channel also forms a channel for water to overflow and be discharged, preventing water accumulation from obstructing the impact.

[0019] Furthermore, in some embodiments, the vent channel includes:

[0020] The first vent section that connects to the inside of the drill bit's docking hole;

[0021] A second vent section that is connected to the first vent on the surface of the drill pipe connector;

[0022] The third vent section is connected to the second vent on the surface of the drill pipe connector;

[0023] The first and second vents are located on both sides of the drill pipe connector, and the second and third overflow vent sections are connected to the first overflow vent section. By setting the "first vent" and "second vent" (located on both sides of the drill pipe connector), and connecting them to the first overflow vent section through the second and third overflow vent sections respectively, a bidirectional exhaust channel is formed. Even if one vent is blocked, the other side can still exhaust normally, significantly improving the reliability of the overflow structure and ensuring the continuous and smooth operation of the impact drill bit.

[0024] In some implementations, the drill pipe detachment aid also includes a housing;

[0025] The housing has: mounting holes that are through at both ends;

[0026] The impactor, drill rig connector, and drill rod connector are all inserted into this mounting hole;

[0027] Furthermore, the drill rig connector of the drill rig connector extends outward from one end of the mounting hole, and the drill rod connector of the drill rod joint extends outward from the other end of the mounting hole. By adding an "outer shell" to house the impactor, various connecting structures, etc., within the mounting hole of the outer shell, external collisions and contaminants can be effectively isolated, internal components can be protected, wear or jamming at the connection points can be reduced, the service life of the equipment can be extended, and the stability of torque transmission and impact action can be guaranteed.

[0028] Furthermore, in some embodiments, the outer periphery of the drill pipe connector has an outwardly protruding drill pipe connector protrusion, and the inner wall of the mounting hole is formed with a first limiting portion located on the side of the drill pipe connector protrusion facing away from the impactor in the axial direction.

[0029] The drill rig connector has an outwardly protruding drill rig connector protrusion on its outer periphery. The inner wall of the mounting hole has a second limiting portion axially positioned on the side of the drill rig connector protrusion facing away from the impactor. By providing a "drill rod connector protrusion" on the outer periphery of the drill rod connector, a "first limiting portion" on the inner wall of the mounting hole (located on the side of the protrusion facing away from the impactor), and a "drill rig connector protrusion" on the outer periphery of the drill rod connector, and a "second limiting portion" on the inner wall of the mounting hole (located on the side of the protrusion facing away from the impactor), the axial sliding range of the impact working body can be limited, preventing excessive sliding that could lead to component detachment or collision, thus ensuring structural stability and safety.

[0030] Furthermore, in some embodiments, the impactor, drill rig connector, and drill rod connector are connected to form an impact working body;

[0031] A space is provided between the first and second limiting parts to allow the impact working body to slide axially when the impact drill bit extends. Clearly defining "a space is provided between the first and second limiting parts to allow the impact working body to slide axially" ensures that the impact working body has sufficient sliding allowance when the impact drill bit extends, avoiding obstruction by the limiting parts and guaranteeing the integrity and effectiveness of the impact action.

[0032] In some embodiments, the housing includes:

[0033] A first housing having a first mounting groove;

[0034] A second housing having a second mounting slot;

[0035] The first and second housings are connected to form an outer shell, and when the first and second housings are connected, the first and second mounting slots mate to form a mounting hole. The outer shell is divided into a "first housing" (with a first mounting slot) and a "second housing" (with a second mounting slot), which, when connected, form a mounting hole. The split design facilitates the positioning and installation of the impactor, drill connector, and drill rod connector within the outer shell during assembly.

[0036] Furthermore, in some embodiments, the connection structure between the first housing and the second housing is detachable. This detachable connection structure (such as a bolted connection) allows for easy separation of the first and second housings, facilitating the opening of the outer casing for inspection or replacement of internal components, significantly improving the ease of maintenance and service life of the equipment.

[0037] In some implementations, the drill pipe detachment aid also includes a housing;

[0038] The housing has: mounting holes that are through at both ends;

[0039] The impactor, drill rig connector, and drill rod connector are all inserted into this mounting hole;

[0040] Furthermore, the drill connection part of the drill rig connector extends outward from one end of the mounting hole, and the drill rod mating part of the drill rod connector extends outward from the other end of the mounting hole;

[0041] There is a spaced portion between the outer casing and the drill rod connector, forming an outflow channel. One end of this outflow channel is connected to an venting channel, and the other end is connected to the external space of the outer casing. While providing protection as described above with the outer casing, the outflow channel between the outer casing and the drill rod connector ensures that gas discharged from the venting channel can smoothly exit the outer casing, preventing pressure buildup inside the casing, ensuring smooth extension and retraction of the impact drill bit, and maintaining stable impact performance.

[0042] The main beneficial effects of the above technical solution are as follows:

[0043] By incorporating an impactor, drill rig connector, and drill rod connector, an auxiliary tool for untangling stuck drill rods is created. When this tool is used to assist the drill rig in untangling stuck drill rods, a detachable transmission connection can be established between the drill rig shaft and the stuck drill rod with a threaded tail end, ensuring reliable transmission of torque. Simultaneously, the impactor's impact bit can continuously impact the drill rod connector, transmitting this impact to the stuck drill rod. This assists the drill rod in impacting and drilling through the soil or rock layers that are stuck, effectively expanding the drill rod's movement space. This allows the drill rod to untangle itself more quickly and effectively, thereby improving overall construction efficiency. Attached Figure Description

[0044] The present invention will be further described below with reference to the accompanying drawings:

[0045] Figure 1 This is a schematic diagram of the auxiliary tool structure.

[0046] Figure 2 This is a cross-sectional view of the overall structure of the auxiliary tool.

[0047] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0048] Figure 4 for Figure 2 Enlarged schematic diagram of part B.

[0049] Figure 5This is a schematic diagram of the overall structure and installation of the auxiliary tool.

[0050] Figure 6 Action illustrations for using assistive tools Figure 1 .

[0051] Figure 7 Action illustrations for using assistive tools Figure 2 .

[0052] Figure 8 Action illustrations for using assistive tools Figure 3 .

[0053] Figure 9 Action illustrations for using assistive tools Figure 4 . Detailed Implementation

[0054] The present invention will be illustrated with specific examples below: Example:

[0055] Auxiliary tools for freeing drill pipes, as attached. Figure 1 To be continued Figure 5 As shown, this is used to assist the drilling rig in freeing the drill rod 2, which has a threaded structure at its tail end, for example, by attaching... Figure 6 As shown, the tail end of drill rod 2 has an outward-facing threaded hole 2.1 with internal threads, and the threaded hole 2.1 forms the aforementioned threaded structure. When drill rod 2 is drilling, the tail end of drill rod 2 is connected to the shaft of the drilling rig to drive the head of drill rod 2 into the mountain or stratum, while the tail end of drill rod 2 remains outside the mountain or stratum.

[0056] The drill pipe detachment auxiliary tool 1 includes an impactor 1.1 commonly used in drilling projects for impact action. The impactor 1.1 is a pneumatic or hydraulic impactor. By supplying gas or liquid to the impactor 1.1, the impact drill bit 1.12 at the end of the impactor 1.1 is driven to reciprocate to generate an outward impact.

[0057] The auxiliary tool 1 for freeing the drill pipe also includes a drill rig connector 1.2 and a drill pipe connector 1.3 connected to the impactor 1.1.

[0058] Among them, as attached Figure 1 and attached Figure 2 As shown, the left end of the impactor 1.1 has an impact drill bit 1.12, and the right end of the impactor 1.1 is fixed to a drill connector 1.2 by, for example, a screw, so that the impactor 1.1 is oriented along its axis (see attached diagram). Figure 2When the drill rig connector 1.2 rotates around its axis (the dotted line in the middle), it synchronously drives the drill rig connector 1.2 to rotate around its axis as well. The drill rig connector 1.2 has a drill rig connection part 1.21 at the end away from the impactor 1.1. The drill rig connection part 1.21 is configured to provide a detachable transmission connection for the drill rig's shaft, so that the shaft drives the drill rig connector 1.2 to rotate.

[0059] For example, the drill rig's spindle has a threaded hole, and the drill rig connection part 1.21 includes: a drill rig connection shaft adapted to be inserted into the threaded hole, and a drill rig connection thread extending helically on the drill rig connection shaft and screwed into the internal thread of the threaded hole. In this case, by aligning the drill rig connection part 1.21 with the threaded hole on the drill rig and turning the drill rig connection head 1.2 in either the forward or reverse direction, the drill rig connection head 1.2 can be detachably connected to or removed from the drill rig's spindle. The thread direction of the drill rig connection thread is preferably set to match the rotation direction of the drill rig's spindle during operation, so that when the drill rig's spindle rotates, it drives the drill rig connection head 1.2 to rotate synchronously, thereby further tightening the thread rather than disengaging it.

[0060] As attached Figure 1 To be continued Figure 3 As shown, the drill pipe connector 1.3 is located at the left end of the impactor 1.1. The right end of the drill pipe connector 1.3 has a drill bit mating hole 1.31, and the left end has a drill pipe mating portion 1.32 for detachable threaded connection with a threaded structure. The drill pipe mating portion 1.32 includes a drill pipe insertion portion adapted to be inserted into the threaded hole 2.1. The outer periphery of the drill pipe insertion portion has an external thread extending threadedly and engaging with the internal thread of the threaded hole 2.1. By aligning the drill pipe mating portion 1.32 with the threaded hole 2.1 and rotating the drill pipe connector 1.3 in either the forward or reverse direction, the drill pipe connector 1.3 can be connected to or disconnected from the locked drill pipe 2.

[0061] The left end of the impact drill bit 1.12 is inserted into the drill bit mating hole 1.31 and abuts against the bottom wall 1.311. That is, the depth of the drill bit mating hole 1.31 is not greater than the axial length of the impact drill bit 1.12 that can be inserted into the drill bit mating hole 1.31, so that the impact drill bit 1.12 can abut against the bottom wall 1.311 and impact the drill rod connector 1.3 during the extension and retraction process.

[0062] Furthermore, the drill pipe connector 1.3 is configured to rotate synchronously with the impactor 1.1. That is, the impactor 1.1 rotates around its axis (attached). Figure 2 When the drill rod 1.2 rotates around its axis (the dotted line in the middle), it simultaneously drives the drill rod connector 1.3 to rotate around its axis. This ensures that when the drill rod connector 1.2 rotates through the impactor 1.1, the drill rod mating part 1.32 can rotate to be screwed into the threaded structure (screwed into the threaded hole 2.1).

[0063] The thread direction on the drill rod connecting part 1.32 is preferably set to match the rotation direction of the drill shaft during operation, so that when the drill shaft rotates, the drill rod connecting head 1.3 is driven to rotate into the threaded hole 2.1 through the drill connecting head 1.2 and the impactor 1.1, thereby further tightening the thread for fixation, rather than separation.

[0064] The impact drill bit 1.12 can be connected to the inner wall of the drill bit mating hole 1.31 by a spline, so that the impact drill bit 1.12 can be inserted into the drill bit mating hole 1.31 to drive the drill rod connector 1.3 to rotate, and can also be pulled out from the drill bit mating hole 1.31.

[0065] Specifically, the impact drill bit 1.12 has a cylindrical portion adapted to be inserted into the drill bit mating hole 1.31. The outer periphery of the cylindrical portion has outwardly protruding spline teeth, and a plurality of spline teeth are spaced apart in the circumferential direction of the cylindrical portion. The inner wall of the drill bit mating hole 1.31 is provided with a spline groove to match each spline tooth. When the cylindrical portion of the impact drill bit 1.12 is inserted into the drill bit mating hole 1.31, one spline tooth is inserted into each spline groove, so that a spline connection is formed between the impact drill bit 1.12 and the inner wall of the drill bit mating hole 1.31.

[0066] As attached Figure 3 As shown, the drill pipe connector 1.3 has a hollow vent 1.33. One end of the vent 1.33 extends to the bottom wall 1.311 of the drill bit docking hole 1.31 and communicates with the interior of the drill bit docking hole 1.31. The other end extends to the outer surface of the drill pipe connector 1.3 and communicates with the external space of the drill pipe connector 1.3. When the impact drill bit 1.12 extends or retracts in the drill bit docking hole 1.31, the air in the drill bit docking hole 1.31 overflows outward from the vent 1.33 under the impact compression.

[0067] As attached Figure 3 As shown, the venting channel 1.33 includes: a first venting section 1.331 that communicates with the interior of the drill bit docking hole 1.31; a second venting section 1.332 that communicates with the first vent 1.34 on the surface of the drill rod connector 1.3; and a third venting section 1.333 that communicates with the second vent 1.35 on the surface of the drill rod connector 1.3.

[0068] The first vent 1.34 and the second vent 1.35 are respectively located on both sides of the drill pipe connector 1.3, and the second overflow section 1.332 and the third overflow section 1.333 are both connected to the first overflow section 1.331.

[0069] Among them, as attached Figure 2As shown, the auxiliary tool 1 for freeing the drill pipe also includes a housing 1.4.

[0070] The outer casing 1.4 contains a cavity with through mounting holes 1.41 at both ends. The impactor 1.1 is housed within these mounting holes 1.41, as are the connection structures between the impactor 1.1 and the drill pipe connector 1.3, and between the impactor 1.1 and the drill rig connector 1.2. The drill rig connection portion 1.21 of the drill rig connector 1.2 extends outward from one end of the mounting hole 1.41, and the drill pipe mating portion 1.32 of the drill pipe connector 1.3 extends outward from the other end of the mounting hole 1.41. This allows the impactor 1.1, drill rig connector 1.2, and drill pipe connector 1.3 to extend along their axis within the outer casing 1.4 (see attached diagram). Figure 2 Move in the direction of the extension of the dashed line.

[0071] As attached Figure 2 As shown, the outer periphery of the drill pipe connector 1.3 has an outwardly protruding drill pipe connector protrusion 1.36, and the inner wall of the mounting hole 1.41 is formed with a first limiting part 1.42 on the side of the drill pipe connector protrusion 1.36 facing away from the impactor 1.1 in the axial direction.

[0072] As attached Figure 3 As shown, the outer periphery of the drill rig connector 1.2 has an outwardly protruding drill rig connector protrusion 1.22, and the inner wall of the mounting hole 1.41 is formed with a second limiting part 1.43 on the side of the drill rig connector protrusion 1.22 facing away from the impactor 1.1 in the axial direction.

[0073] The drill pipe connector protrusion 1.36 can be an annular protrusion surrounding the drill pipe connector 1.3. The outer ring of the annular protrusion can be adapted to the hole wall of the mounting hole 1.41 to provide support for the drill pipe connector 1.3.

[0074] Similarly, the drill rig connector protrusion 1.22 can also be an annular protrusion surrounding the drill rig connector 1.2. The outer ring of the annular protrusion can be adapted to fit and connect with the wall of the mounting hole 1.41 to provide support for the drill rig connector 1.2.

[0075] The gap between the first limiting part 1.42 and the second limiting part 1.43 is greater than the gap between the left side of the drill rod connector protrusion 1.36 and the right side of the drill rig connector protrusion 1.22 when the impact drill bit 1.12 is extended, so that there is space between the first limiting part 1.42 and the second limiting part 1.43 for the impact working body (the impactor 1.1, the drill rig connector 1.2 and the drill rod connector 1.3 are connected to form the impact working body) to slide axially when the impact drill bit 1.12 is extended.

[0076] For the casing 1.4, see attached Figure 5 As shown, the outer shell 1.4 in this embodiment includes: a first housing 1.4a having a first mounting groove 1.4a1; and a second housing 1.4b having a second mounting groove 1.4b1.

[0077] The first housing 1.4a and the second housing 1.4b are connected to form the outer shell 1.4, and when the first housing 1.4a and the second housing 1.4b are connected, the first mounting groove 1.4a1 and the second mounting groove 1.4b1 mate to form the mounting hole 1.41.

[0078] The connection structure between the first housing 1.4a and the second housing 1.4b is preferably detachable, for example, by using a commonly used detachable snap-fit ​​structure or a screw connection structure to connect the first housing 1.4a and the second housing 1.4b.

[0079] In this embodiment, a first threaded hole is provided on the first housing 1.4a, and a second threaded hole is provided on the second housing 1.4b that aligns with the first threaded hole. By passing the threaded end of the bolt through the first threaded hole, inserting it into the second threaded hole, and screwing it onto the second housing 1.4b, the first housing 1.4a and the second housing 1.4b are detachably connected by a bolt connection structure to form an outer shell 1.4.

[0080] When the casing 1.4 is provided, as shown in the attached... Figure 3 As shown, there is a spaced portion between the outer shell 1.4 and the drill pipe connector 1.3, which forms an outflow channel 1.5. One end of the outflow channel 1.5 is connected to the overflow channel 1.33, and the other end is connected to the external space of the outer shell 1.4.

[0081] When using auxiliary tools for drill pipe detachment:

[0082] First, rotate the drill rod mating part 1.32 clockwise to screw it into the threaded hole 2.1 of the drill rod 2, completing the positioning connection between the tail end of the drill rod 2 and the drill rod connector 1.3. (See attached...) Figure 6 To be continued Figure 7 As shown.

[0083] Then connect the drill connection part 1.21 of the drill connector 1.2 to the drill shaft (e.g., the threaded connection mentioned above).

[0084] The drill rig's shaft is driven to rotate forward, while air / hydraulic fluid is supplied to the impactor 1.1. This causes the impact drill bit 1.12 of the impactor 1.1 to impact the drill pipe connector 1.3, which in turn impacts the drill pipe 2. Simultaneously, the drill rig is driven to advance towards the drill pipe 2, with the first limiting part 1.42 abutting against the drill pipe connector protrusion 1.36. Observe whether the drill pipe unblocking auxiliary tool 1 and the drill pipe 2 move.

[0085] If movement occurs, it is determined that drill rod 2 can be moved to escape the trap, and the drilling rig is then driven to move away from drill rod 2 to pull it out, as shown in the attached diagram. Figure 9 As shown, the second limiting part 1.43 abuts against the drill rig connector protrusion 1.22.

[0086] If drill rod 2 becomes stuck during the extraction process, repeat the above steps until drill rod 2 is successfully extracted. After drill rod 2 is extracted, it can be disassembled using auxiliary tool 1 to free it from its obstruction.

[0087] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present utility model, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model according to the specific circumstances.

[0088] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An auxiliary tool (1) for untangling drill rods, used to assist the drilling rig in untangling drill rods (2) with threaded ends, characterized in that, The auxiliary tool (1) for freeing the drill pipe includes: The impactor (1.1) has an impact drill bit (1.12) that reciprocates to generate an outward impact at one end; and a drill rig connector (1.2) that rotates synchronously with the impactor (1.1) at the other end. The drill pipe connector (1.3) has a drill bit mating hole (1.31) at one end and a drill pipe mating part (1.32) at the other end that is detachably threaded to the threaded structure. The drill rig connector (1.2) has a drill rig connection part (1.21) at one end away from the impactor (1.1), which is configured to provide a detachable transmission connection for the drill shaft so that the shaft drives the drill rig connector (1.2) to rotate. The end of the impact drill bit (1.12) is inserted into the drill bit mating hole (1.31) and abuts against the bottom wall (1.311), and the drill rod connector (1.3) is configured to rotate synchronously with the impactor (1.1) to: When the drill rig connector (1.2) drives the drill rod connector (1.3) to rotate through the impactor (1.1), the drill rod mating part (1.32) can rotate to be screwed into the threaded structure.

2. The auxiliary tool for freeing drill pipes according to claim 1, characterized in that: A spline connection is formed between the impact drill bit (1.12) and the inner wall of the drill bit mating hole (1.31) to enable: The impact drill bit (1.12) is inserted directly into the drill bit mating hole (1.31) to drive the drill rod connector (1.3) to rotate.

3. The auxiliary tool for freeing drill pipes according to claim 2, characterized in that: The drill pipe connector (1.3) is provided with an venting channel (1.33), one end of which is connected to the inside of the drill bit docking hole (1.31), and the other end extends to the outer surface of the drill pipe connector (1.3) and is connected to the external space of the drill pipe connector (1.3).

4. The auxiliary tool for freeing drill pipes according to claim 3, characterized in that: The overflow channel (1.33) includes: The first vent section (1.331) is connected to the inside of the drill bit docking hole (1.31). A second vent section (1.332) is connected to the first vent (1.34) on the surface of the drill pipe connector (1.3). A third vent section (1.333) is connected to the second vent (1.35) on the surface of the drill pipe connector (1.3). The first vent (1.34) and the second vent (1.35) are respectively located on both sides of the drill rod connector (1.3), and the second overflow hole section (1.332) and the third overflow hole section (1.333) are both connected to the first overflow hole section (1.331).

5. The auxiliary tool for untangling drill pipes according to any one of claims 1 to 4, characterized in that: The auxiliary tool (1) for getting the drill pipe out of trouble also includes a housing (1.4). The outer casing (1.4) has: mounting holes (1.41) that are through at both ends. The impactor (1.1), the drill rig connector (1.2), and the drill rod connector (1.3) are all inserted into the mounting hole (1.41); Furthermore, the drill connection part (1.21) of the drill connector (1.2) extends outward from one end of the mounting hole (1.41), and the drill rod mating part (1.32) of the drill rod connector (1.3) extends outward from the other end of the mounting hole (1.41).

6. The auxiliary tool for freeing drill pipes according to claim 5, characterized in that: The outer periphery of the drill pipe connector (1.3) has an outwardly protruding drill pipe connector protrusion (1.36), and the inner wall of the mounting hole (1.41) is formed with a first limiting part (1.42) on the side of the drill pipe connector protrusion (1.36) facing away from the impactor (1.1) in the axial direction. The outer periphery of the drill connector (1.2) has an outwardly protruding drill connector protrusion (1.22), and the inner wall of the mounting hole (1.41) is formed with a second limiting part (1.43) on the side of the drill connector protrusion (1.22) facing away from the impactor (1.1) in the axial direction.

7. The auxiliary tool for freeing drill pipes according to claim 6, characterized in that: The impactor (1.1), the drill rig connector (1.2), and the drill rod connector (1.3) are connected to form an impact working body; A space is provided between the first limiting part (1.42) and the second limiting part (1.43) for the impact working body to slide axially when the impact drill bit (1.12) is extended.

8. The auxiliary tool for freeing drill pipes according to claim 5, characterized in that: The outer casing (1.4) includes: A first housing (1.4a) having a first mounting groove (1.4a1); A second housing (1.4b) having a second mounting groove (1.4b1); The first housing (1.4a) and the second housing (1.4b) are connected to form the outer shell (1.4), and when the first housing (1.4a) and the second housing (1.4b) are connected, the first mounting groove (1.4a1) and the second mounting groove (1.4b1) mate to jointly form the mounting hole (1.41).

9. The auxiliary tool for freeing drill pipes according to claim 8, characterized in that: The connection structure between the first housing (1.4a) and the second housing (1.4b) is detachable.

10. The auxiliary tool for freeing drill pipes according to claim 3, characterized in that: The auxiliary tool (1) for getting the drill pipe out of trouble also includes a housing (1.4). The outer casing (1.4) has: mounting holes (1.41) that are through at both ends. The impactor (1.1), the drill rig connector (1.2), and the drill rod connector (1.3) are all inserted into the mounting hole (1.41); Furthermore, the drill connecting part (1.21) of the drill connector (1.2) extends outward from one end of the mounting hole (1.41), and the drill rod mating part (1.32) of the drill rod connector (1.3) extends outward from the other end of the mounting hole (1.41); The outer shell (1.4) and the drill rod connector (1.3) have a spaced portion, which forms an outflow channel (1.5). One end of the outflow channel (1.5) is connected to the overflow channel (1.33), and the other end is connected to the external space of the outer shell (1.4).

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