Drill pipe auxiliary connection device

Abstract

The utility model provides a kind of drill pipe auxiliary connecting device, the drill pipe auxiliary connecting device includes first connecting seat, second connecting seat and connecting piece, connecting piece is connected between first connecting seat and second connecting seat, connecting piece is bendable;First connecting seat is used to connect with driving drill pipe, and second connecting seat is used to connect with lengthened drill pipe;Drill pipe auxiliary connecting device has first state and second state;When drill pipe auxiliary connecting device is in first state, first connecting seat is separated from second connecting seat, and first connecting seat is connected with second connecting seat by connecting piece;When drill pipe auxiliary connecting device is in second state, first connecting seat is directly connected with second connecting seat.The drill pipe auxiliary connecting device is not only convenient to use, simple structure, lower cost, but also not limited by construction site, and has good versatility.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a drill pipe auxiliary connection device. Background Technology

[0002] Rotary drilling rigs are a common type of construction machinery. During the drilling process, once the borehole reaches a certain depth, a new extension drill rod (usually a long auger drill rod) needs to be connected to the active drill rod.

[0003] Currently, when connecting extended drill pipes to active drill pipes, cranes and aerial work platforms are typically used to lift and straighten the extended drill pipes before connecting them to the active drill pipes and securing them with pins. This method requires large auxiliary lifting equipment, which is not only costly but also limits the available construction scenarios. Utility Model Content

[0004] The purpose of this utility model is to provide a drill pipe auxiliary connection device that is not only easy to use, simple in structure, and low in cost, but also not limited by the construction site and has good versatility.

[0005] This utility model provides a drill pipe auxiliary connection device, including a first connecting seat, a second connecting seat, and a connecting member. The connecting member is connected between the first connecting seat and the second connecting seat, and the connecting member is flexible. The first connecting seat is used to connect with an active drill pipe, and the second connecting seat is used to connect with an extended drill pipe. The drill pipe auxiliary connection device has a first state and a second state. When the drill pipe auxiliary connection device is in the first state, the first connecting seat and the second connecting seat are separated, and the first connecting seat and the second connecting seat are connected by the connecting member; when the drill pipe auxiliary connection device is in the second state, the first connecting seat and the second connecting seat are directly connected.

[0006] Furthermore, the first connecting seat and / or the second connecting seat are cylindrical structures; when the drill pipe auxiliary connecting device is in the second state, the first connecting seat and the second connecting seat are sleeved together.

[0007] Furthermore, the first connecting seat includes a first cylinder and a second cylinder connected to each other, and the second connecting seat includes a third cylinder and a fourth cylinder connected to each other. The first cylinder is used to connect with the active drill pipe, and the fourth cylinder is used to connect with the extended drill pipe. When the drill pipe auxiliary connecting device is in the second state, the second cylinder is sleeved with the third cylinder.

[0008] Furthermore, the two ends of the connector are respectively connected to the inner wall of the first connector and the inner wall of the second connector; when the drill pipe auxiliary connection device is in the second state, the connector is housed in the first connector and / or the second connector.

[0009] Furthermore, the first connecting seat is provided with a first limiting structure, so that when the first connecting seat is sleeved with the second connecting seat, the end of the second connecting seat can abut against the first limiting structure; And / or, the second connecting seat is provided with a second limiting structure, so that when the first connecting seat is sleeved with the second connecting seat, the end of the first connecting seat can abut against the second limiting structure.

[0010] Furthermore, one of the first connecting seat and the second connecting seat is provided with a connecting groove, and the other is provided with a limiting pin; the connecting groove has an opening, which is used for the limiting pin to enter into the connecting groove or to disengage from the connecting groove; when the drill rod auxiliary connecting device is in the second state, the limiting pin is screwed into the connecting groove under the rotational action of the active drill rod.

[0011] Furthermore, the connecting groove includes a transition groove and a retaining groove. The retaining groove is located on one side of the groove opening along the circumferential direction of the first connecting seat. One end of the transition groove communicates with the groove opening, and the other end of the transition groove communicates with the retaining groove. When the drill pipe auxiliary connecting device is in the second state, the limiting pin is located in the retaining groove.

[0012] Furthermore, a hoisting structure is provided on the outer wall of the second connecting seat.

[0013] Furthermore, the connector is a metal rope or a metal chain.

[0014] Furthermore, the drill pipe auxiliary connection device also includes a support, the support including a receiving cylinder and a leg connected to the receiving cylinder; the first connecting seat and / or the second connecting seat are cylindrical structures; the drill pipe auxiliary connection device also has a receiving state; When the drill pipe auxiliary connection device is in the receiving state, the first connecting seat is sleeved with the second connecting seat, and the second connecting seat is sleeved with the receiving cylinder.

[0015] The drill rod auxiliary connection device provided by this utility model, by setting a first connecting seat, a second connecting seat, and a connecting member, connects the first and second connecting seats through the connecting member. Since the first and second connecting seats are detachable and the connecting member is flexible, it facilitates the connection of the active drill rod and the extended drill rod. This drill rod auxiliary connection device can cooperate with the components of the rotary drilling rig itself to achieve the connection of the active drill rod and the extended drill rod. It is not only simple to operate and convenient to use, but also has a simple structure and low cost. Furthermore, it requires little installation space, is almost unrestricted by the construction site, and is not limited by the size of the extended drill rod, thus exhibiting good versatility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the drill pipe auxiliary connection device in an embodiment of this utility model.

[0017] Figure 2 for Figure 1 The main view.

[0018] Figure 3 for Figure 1 A cross-sectional schematic diagram.

[0019] Figure 4 This is a schematic diagram of the structure of the first connecting seat in an embodiment of this utility model.

[0020] Figure 5 for Figure 4 The main view.

[0021] Figure 6 This is a schematic diagram of the structure of the second connecting seat in an embodiment of this utility model.

[0022] Figure 7 for Figure 6 The main view.

[0023] Figures 8 to 13 This is a schematic diagram illustrating the connection process between the active drill rod and the extended drill rod in an embodiment of this utility model. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0027] like Figures 1 to 13 As shown, this utility model embodiment provides a drill rod auxiliary connection device for drilling equipment, specifically for rotary drilling rigs. The drill rod auxiliary connection device includes a first connecting seat 1, a second connecting seat 2, and a connecting member 3. The connecting member 3 is connected between the first connecting seat 1 and the second connecting seat 2, and the connecting member 3 is flexible. The first connecting seat 1 and the second connecting seat 2 are detachably connected, meaning they can be disassembled or directly contacted and connected. The first connecting seat 1 is used to connect to the active drill rod 5, and the second connecting seat 2 is used to connect to the extended drill rod 6; the drill rod auxiliary connection device has a first state and a second state.

[0028] like Figures 10 to 12 As shown, when the drill pipe auxiliary connection device is in the first state, the first connecting seat 1 and the second connecting seat 2 are separated, and the first connecting seat 1 and the second connecting seat 2 are connected by the connecting member 3; Figure 13 As shown, when the drill pipe auxiliary connection device is in the second state, the first connecting seat 1 is located above the second connecting seat 2, and the first connecting seat 1 and the second connecting seat 2 are directly connected (in this embodiment, the first connecting seat 1 and the second connecting seat 2 are directly connected under the downward movement and rotation of the active drill pipe 5, that is, the downward movement and rotation of the active drill pipe 5 drives the first connecting seat 1 to move downward and rotate, so that the first connecting seat 1 and the second connecting seat 2 are screwed and fixed. Of course, in other embodiments, the first connecting seat 1 and the second connecting seat 2 can also be directly connected in other ways), and the first connecting seat 1 and the second connecting seat 2 are in the drilling rotation direction S1 of the active drill pipe 5 (the drilling rotation direction S1 is referenced). Figure 4 and Figure 5 With the upper phase fixed, the active drill rod 5 can rotate together with the first connecting seat 1, the second connecting seat 2 and the extended drill rod 6 when it rotates.

[0029] The drill rod auxiliary connection device provided in this embodiment of the utility model, by setting a first connecting seat 1, a second connecting seat 2, and a connecting member 3, connects the first connecting seat 1 and the second connecting seat 2 through the connecting member 3. Since the first connecting seat 1 and the second connecting seat 2 are detachable and separable, and the connecting member 3 is flexible, it is possible to easily connect the active drill rod 5 and the extended drill rod 6. This drill rod auxiliary connection device can cooperate with the components of the rotary drilling rig itself to achieve the connection between the active drill rod 5 and the extended drill rod 6. It is not only simple to operate and convenient to use, but also has a simple structure and low cost. At the same time, it requires little installation space and is almost not limited by the construction site, nor is it limited by the size of the extended drill rod 6, thus having good versatility.

[0030] Specifically, when connecting the active drill pipe 5 and the extended drill pipe 6, first connect the active drill pipe 5 to the first connecting seat 1 (e.g., Figure 9 (As shown), then the first connecting seat 1 is lifted upward by the active drill rod 5, separating the first connecting seat 1 from the second connecting seat 2, and the first connecting seat 1 and the second connecting seat 2 are connected by the connecting piece 3 (as shown). Figure 10 As shown), the drill pipe auxiliary connection device is in the first state. Since the connector 3 is flexible, the second connecting seat 2 can be easily connected to the extended drill pipe 6 (as shown). Figure 11 As shown, before installation, the extended drill rod 6 is generally placed horizontally. Since the connector 3 is flexible, the posture of the second connecting seat 2 can be easily adjusted according to the placement direction of the extended drill rod 6, facilitating the connection between the second connecting seat 2 and the extended drill rod 6; that is, without lifting and straightening the extended drill rod 6 to a vertical position, the second connecting seat 2 can be connected to the extended drill rod 6. Then, the active drill rod 5 is used to lift the first connecting seat 1, the second connecting seat 2, and the extended drill rod 6 upwards, so that the extended drill rod 6 is in a vertical position (e.g., ...). Figure 12 As shown), the extended drill rod 6 is then placed in the borehole (i.e., the hole drilled by the drill rod) or the extended drill rod 6 is aligned and connected with other drill rods located in the borehole. Then, the downward movement and rotation of the active drill rod 5 drives the first connecting seat 1 to move downward and rotate, so that the first connecting seat 1 and the second connecting seat 2 are screwed together and fixed, that is, the drill rod auxiliary connection device is in the second state (as shown). Figure 13 As shown in the figure, this completes the connection between the active drill pipe 5 and the extended drill pipe 6.

[0031] Furthermore, such as Figures 1 to 7As shown, in this embodiment, the first connecting seat 1 and / or the second connecting seat 2 are hollow cylindrical structures. When the drill pipe auxiliary connecting device is in the second state, the first connecting seat 1 and the second connecting seat 2 are sleeved together. Specifically, in this embodiment, both the first connecting seat 1 and the second connecting seat 2 are cylindrical structures with openings at both the top and bottom ends. The inner diameter of the first connecting seat 1 is greater than or equal to the outer diameter of the second connecting seat 2. When the drill pipe auxiliary connecting device is in the second state, the lower end of the first connecting seat 1 is sleeved outside the upper end of the second connecting seat 2. Of course, in other embodiments, the inner diameter of the second connecting seat 2 may be greater than or equal to the outer diameter of the first connecting seat 1, and when the drill pipe auxiliary connecting device is in the second state, the upper end of the second connecting seat 2 may be sleeved outside the lower end of the first connecting seat 1. In other embodiments, one of the first connecting seat 1 and the second connecting seat 2 may also be a solid structure (for example, the second connecting seat 2 may be a solid cylindrical structure).

[0032] Furthermore, such as Figures 1 to 7 As shown, in this embodiment, the first connecting seat 1 includes a first cylindrical body 11 and a second cylindrical body 12 connected to each other. The first cylindrical body 11 is located above the second cylindrical body 12, and the first cylindrical body 11 and the second cylindrical body 12 are integrally connected. The second connecting seat 2 includes a third cylindrical body 21 and a fourth cylindrical body 22 connected to each other. The third cylindrical body 21 is located above the fourth cylindrical body 22, and the third cylindrical body 21 and the fourth cylindrical body 22 are integrally connected. The first cylindrical body 11 is used to connect to the active drill rod 5, and the fourth cylindrical body 22 is used to connect to the extended drill rod 6. When the drill rod auxiliary connecting device is in the second state, the second cylindrical body 12 and the third cylindrical body 21 are sleeved together.

[0033] Specifically, in this embodiment, the inner diameter of the second cylinder 12 is greater than or equal to the outer diameter of the third cylinder 21; when the drill rod auxiliary connection device is in the second state, the second cylinder 12 is sleeved on the outside of the third cylinder 21. The first cylinder 11 is provided with a first pin hole 14 for connecting with the active drill rod 5, and the fourth cylinder 22 is provided with a second pin hole 24 for connecting with the extended drill rod 6. When the first connecting seat 1 is connected to the active drill rod 5, the lower end of the active drill rod 5 is inserted into the first cylinder 11, and the active drill rod 5 and the first cylinder 11 are connected by a pin (the pin hole on the active drill rod 5 is aligned with the first pin hole 14, and then the pin is inserted into the pin hole on the active drill rod 5 and the first pin hole 14); when the second connecting seat 2 is connected to the extended drill rod 6, the fourth cylinder 22 is inserted into the upper end of the extended drill rod 6, and the extended drill rod 6 and the fourth cylinder 22 are connected by a pin (the pin hole on the extended drill rod 6 is aligned with the second pin hole 24, and then the pin is inserted into the pin hole on the extended drill rod 6 and the second pin hole 24).

[0034] Furthermore, such as Figures 1 to 7As shown, in this embodiment, the first connecting seat 1 is provided with a first limiting structure 13, which is specifically a protrusion on the inner wall of the first connecting seat 1, located at the connection position of the first cylinder 11 and the second cylinder 12; the second connecting seat 2 is provided with a second limiting structure 23, which is specifically a protrusion on the outer wall of the second connecting seat 2, located at the connection position of the third cylinder 21 and the fourth cylinder 22. When the first connecting seat 1 and the second connecting seat 2 are sleeved, the end of the second connecting seat 2 can abut against the first limiting structure 13, and / or the end of the first connecting seat 1 can abut against the second limiting structure 23, thereby axially limiting the first connecting seat 1 and the second connecting seat 2 and facilitating the alignment and connection of the first connecting seat 1 and the second connecting seat 2. Meanwhile, when the first connecting seat 1 is connected to the active drill rod 5, the lower end of the active drill rod 5 can abut against the first limiting structure 13, thereby axially limiting the active drill rod 5 and the first connecting seat 1, and facilitating the alignment of the active drill rod 5 and the first connecting seat 1; when the second connecting seat 2 is connected to the extended drill rod 6, the upper end of the extended drill rod 6 can abut against the second limiting structure 23, thereby axially limiting the second connecting seat 2 and the extended drill rod 6, and facilitating the alignment and connection of the second connecting seat 2 and the extended drill rod 6.

[0035] Furthermore, such as Figures 1 to 7 As shown, in this embodiment, one of the first connecting seat 1 and the second connecting seat 2 is provided with a connecting groove 15, and the other is provided with a limiting pin 25. The connecting groove 15 has a slot 150, which is used for the limiting pin 25 to enter into or disengage from the connecting groove 15. When the drill rod auxiliary connecting device is in the second state, the limiting pin 25 is screwed into the connecting groove 15 under the rotational action of the active drill rod 5, thereby directly connecting the first connecting seat 1 and the second connecting seat 2, and fixing the first connecting seat 1 and the second connecting seat 2 in the drilling rotation direction S1 of the active drill rod 5.

[0036] Specifically, in this embodiment, the connecting groove 15 is located at the lower end of the first connecting seat 1, the groove opening 150 of the connecting groove 15 is located at the lower edge of the first connecting seat 1, and the limiting pin 25 is located on the outer wall of the second connecting seat 2. Of course, in other embodiments, when the upper end of the second connecting seat 2 is sleeved on the lower end of the first connecting seat 1, the connecting groove 15 can also be located at the upper end of the second connecting seat 2, and the limiting pin 25 can be located on the outer wall of the first connecting seat 1.

[0037] Furthermore, such as Figures 4 to 7As shown, in this embodiment, the connecting groove 15 includes a transition groove 151 and a retaining groove 152. The retaining groove 152 is located on one side of the groove opening 150 along the circumferential direction of the first connecting seat 1. One end of the transition groove 151 communicates with the groove opening 150, and the other end of the transition groove 151 communicates with the retaining groove 152. When the drill pipe auxiliary connecting device is in the second state, the limiting pin 25 is located in the retaining groove 152. With this configuration, when the first connecting seat 1 and the second connecting seat 2 are directly connected, the limiting pin 25 can be prevented from axially dislodging from the retaining groove 152 (that is, the limiting pin 25 is restricted within the retaining groove 152), thereby preventing the first connecting seat 1 and the second connecting seat 2 from axially loosening.

[0038] Specifically, in this embodiment, the slot 152 is located on one side of the slot 150 along the first direction S2, which is opposite to the drilling rotation direction S1. The slot 152 extends axially along the first connecting seat 1; the transition groove 151 has an L-shaped structure and includes a vertical groove and a horizontal groove (not labeled in the figure) that are connected to each other. The vertical groove extends axially along the first connecting seat 1, and the horizontal groove extends circumferentially along the first connecting seat 1. The vertical groove communicates with the slot 150, and the horizontal groove communicates with the slot 152. When the first connecting seat 1 and the second connecting seat 2 are connected, the first connecting seat 1, under the rotational drive of the active drill rod 5, causes the limiting pin 25 to sequentially enter the slot 152 through the slot 150 and the transition groove 151. Of course, in other embodiments, the transition groove 151 can also have other shapes and structures, such as an inclined groove.

[0039] Furthermore, such as Figures 1 to 7 As shown, in this embodiment, there are multiple connecting grooves 15 and multiple limiting pins 25. Multiple connecting grooves 15 are arranged at intervals along the circumference of the first connecting seat 1, and multiple limiting pins 25 are arranged at intervals along the circumference of the second connecting seat 2. When the drill pipe auxiliary connection device is in the second state, each limiting pin 25 is located in the corresponding connecting groove 15 to improve the connection stability of the first connecting seat 1 and the second connecting seat 2.

[0040] Furthermore, such as Figures 1 to 5 As shown, in this embodiment, a reinforcing rib 16 is provided on the outer wall of the first connecting seat 1 at the position corresponding to the connecting groove 15. The reinforcing rib 16 has a circular structure and can be fixed to the outer wall of the first connecting seat 1 by welding. The reinforcing rib 16 can strengthen the first connecting seat 1 to compensate for the structural strength loss caused by the connection groove 15 (it should be noted that since the inner diameter of the reinforcing rib 16 is greater than or equal to the outer circumference of the limiting pin 25, the reinforcing rib 16 will not interfere with the limiting pin 25 entering the connecting groove 15).

[0041] Furthermore, in this embodiment, the connector 3 is a metal rope, specifically a steel wire rope. Of course, in other embodiments, the connector 3 can also be other flexible structures / materials such as a metal chain; specifically, the connector 3 can be an iron chain, a stainless steel chain, etc. The two ends of the connector 3 are respectively connected to the inner walls of the first connecting seat 1 and the second connecting seat 2; when the drill pipe auxiliary connecting device is in the second state, the connector 3 is housed within the first connecting seat 1 and / or the second connecting seat 2.

[0042] Specifically, in this embodiment, the two ends of the connector 3 are connected to the inner walls of the first connecting seat 1 and the second connecting seat 2 respectively via pins (of course, in other embodiments, it can also be fixed in other ways). When the drill rod auxiliary connection device is in the first state, the connector 3 extends outside the first connecting seat 1 and the second connecting seat 2, so that the first connecting seat 1 and the second connecting seat 2 can be separated, thereby allowing the second connecting seat 2 to adjust its posture arbitrarily relative to the first connecting seat 1, so as to facilitate the connection between the second connecting seat 2 and the extended drill rod 6; when the drill rod auxiliary connection device is in the second state, the connector 3 is completely housed in the first connecting seat 1 and / or the second connecting seat 2, so as to avoid the connector 3 being exposed and affecting the normal drilling operation of the drill rod. In this embodiment, the second connecting seat 2 is provided with a connecting plate 27, and the connecting plate 27 is provided with a through hole 271 for the connector 3 to pass through. The through hole 271 is located at the center of the connecting plate 27, so that the connector 3 can freely extend and retract relative to the second connecting seat 2; of course, in other embodiments, the connecting plate 27 may not be provided in the second connecting seat 2.

[0043] Furthermore, in this embodiment, a lifting structure 26 is provided on the outer wall of the second connecting seat 2. The lifting structure 26 is used for lifting equipment to lift the second connecting seat 2 to the vicinity of the extended drill rod 6 (the second connecting seat 2 is relatively heavy), so as to facilitate the connection between the second connecting seat 2 and the extended drill rod 6. The lifting equipment can be the auxiliary winch of the rotary drilling rig itself, etc.

[0044] Specifically, in this embodiment, the lifting structure 26 includes a lifting ring 261 and a plurality of connecting rods 262. The lifting ring 261 is a circular ring structure, and the lifting ring 261 is arranged at intervals around the periphery of the second connecting seat 2. The lifting ring 261 is connected to the outer wall of the second connecting seat 2 through the plurality of connecting rods 262. The lifting ring 261 is used for lifting by lifting equipment. Of course, in other embodiments, the lifting structure 26 can also be of other structural forms.

[0045] Furthermore, such as Figures 1 to 3As shown, in this embodiment, the drill pipe auxiliary connection device further includes a support 4, which includes a receiving cylinder 41 and support legs 42 connected to the receiving cylinder 41. The receiving cylinder 41 is a cylindrical structure with openings at both the top and bottom ends. The receiving cylinder 41 is used to fit into the second connecting seat 2, and the support legs 42 are used to support the bottom surface. In this embodiment, the support legs 42 are fixed to the outer wall of the receiving cylinder 41 by bolts; of course, the support legs 42 and the receiving cylinder 41 can also be fixed by welding or other methods. In this embodiment, there are multiple support legs 42 (three are shown in this embodiment), and the multiple support legs 42 are spaced apart to better provide support. The drill pipe auxiliary connection device also has a receiving state; when the drill pipe auxiliary connection device is in the receiving state, the first connecting seat 1 is located above the second connecting seat 2 and the first connecting seat 1 and the second connecting seat 2 are fitted together vertically, and the second connecting seat 2 is located above the receiving cylinder 41 and the second connecting seat 2 is fitted together vertically (specifically, the receiving cylinder 41 is fitted onto the outside of the fourth cylinder 22 of the second connecting seat 2).

[0046] Specifically, by providing a support 4, the support 4 can support the first connecting seat 1 and the second connecting seat 2. On the one hand, when connecting the active drill rod 5 to the first connecting seat 1, the first connecting seat 1 can be in a vertical state, making it easier for the active drill rod 5 to align with the first connecting seat 1. On the other hand, when the drill rod auxiliary connecting device is not in use, the support 4 can facilitate the storage of the first connecting seat 1 and the second connecting seat 2. At the same time, the receiving cylinder 41 is provided with a third pin hole 43. When the drill rod auxiliary connecting device is not in use, the second pin hole 24 on the second connecting seat 2 can be fixed to the third pin hole 43 on the receiving cylinder 41 by a pin. Meanwhile, the first connecting seat 1 and the second connecting seat 2 are limited by the connecting groove 15 and the limiting pin 25 to prevent the first connecting seat 1, the second connecting seat 2 and the support 4 from separating during transportation.

[0047] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, a third limiting structure 411 is provided on the inner wall of the receiving cylinder 41, specifically a stepped portion. When the second connecting seat 2 is sleeved with the receiving cylinder 41, the lower end of the second connecting seat 2 abuts against the third limiting structure 411, and / or the upper end of the receiving cylinder 41 abuts against the second limiting structure 23, thereby axially limiting the second connecting seat 2 and the receiving cylinder 41.

[0048] like Figures 8 to 13As shown, this embodiment of the invention also provides a drilling device, specifically a rotary drilling rig, including the aforementioned drill rod auxiliary connection device. The drilling device further includes a mast 7, a power head 8 mounted on the mast 7, an active drill rod 5 connected to the power head 8, and an extended drill rod 6. The power head 8 can move up and down relative to the mast 7 and is used to drive the active drill rod 5 to rotate. The extended drill rod 6 is generally a long spiral drill rod. For the specific structure of the drilling device, please refer to the prior art, which will not be elaborated here.

[0049] This utility model embodiment also provides a drill pipe connection method based on the above-mentioned drill pipe auxiliary connection device, the drill pipe connection method including: Connect the active drill rod 5 to the first connecting seat 1, and control the active drill rod 5 to lift the first connecting seat 1 upward, so that the first connecting seat 1 is separated from the second connecting seat 2. The first connecting seat 1 and the second connecting seat 2 are connected by the connecting piece 3, and at the same time, the second connecting seat 2 is separated from the support 4 (in the initial state, the second connecting seat 2 is sleeved on the receiving cylinder 41 of the support 4). Connect the second connecting seat 2 to the first extended drill rod, and control the active drill rod 5 to lift the first connecting seat 1, the second connecting seat 2 and the first extended drill rod upward, so that the first extended drill rod is in a vertical state. Control the active drill rod 5 to place the first extended drill rod in the borehole (when there are no other drill rods in the borehole); or control the active drill rod 5 to align the first extended drill rod with the second extended drill rod located in the borehole, and then connect the first extended drill rod with the second extended drill rod (when there are other drill rods in the borehole). The active drill rod 5 is controlled to perform drilling action. Under the downward movement and rotation of the active drill rod 5, the first connecting seat 1 and the second connecting seat 2 are directly connected (i.e., sleeved), so that the first connecting seat 1 and the second connecting seat 2 are fixed in the drilling rotation direction S1 of the active drill rod 5.

[0050] The following details the usage steps of this drill pipe auxiliary connection device: 1. When connecting the active drill pipe 5 and the extended drill pipe 6, if... Figure 8 As shown, the drill pipe auxiliary connection device is placed on the ground, and the active drill pipe 5 is controlled to align with the drill pipe auxiliary connection device placed on the ground.

[0051] like Figure 9 As shown, the lower end of the active drill rod 5 is inserted into the first connecting seat 1, and the active drill rod 5 and the first connecting seat 1 are fixed by a pin.

[0052] like Figure 10As shown, the active drill rod 5 is controlled to move upward, which in turn drives the first connecting seat 1 to lift upward, so that the first connecting seat 1 and the second connecting seat 2 are separated, and the connecting piece 3 extends. The first connecting seat 1 and the second connecting seat 2 are connected by the connecting piece 3. The active drill rod 5 is controlled to continue to move upward, and the first connecting seat 1 drives the second connecting seat 2 to lift upward through the connecting piece 3, so that the second connecting seat 2 is separated from the support 4.

[0053] like Figure 11 As shown, the second connecting seat 2 is placed near the extended drill rod 6 by the rotation and travel of the rotary drilling rig itself. Then, the lifting structure 26 on the second connecting seat 2 is hooked by the auxiliary winch hook of the rotary drilling rig, so that the second connecting seat 2 is aligned with the top of the extended drill rod 6. Then, the second connecting seat 2 and the extended drill rod 6 are fixed by a pin. After fixing, the auxiliary winch hook is removed.

[0054] like Figure 12 As shown, the active drill rod 5 is controlled to move upward, lifting the first connecting seat 1, the second connecting seat 2, and the extended drill rod 6 upward, making the extended drill rod 6 vertical. Then, the extended drill rod 6 is moved to the drilling position. When there are no other drill rods in the hole, the active drill rod 5 is controlled to move downward, causing the extended drill rod 6 to fall into the hole. When there are other drill rods in the hole, the active drill rod 5 is controlled to align the extended drill rod 6 with the other drill rods in the hole, and then connect the extended drill rod 6 to the other drill rods.

[0055] like Figure 13 As shown, the active drill rod 5 is controlled to perform drilling action. The downward movement and rotation of the active drill rod 5 drive the first connecting seat 1 to move downward and rotate, so that the first connecting seat 1 and the second connecting seat 2 are screwed together and fixed, thus completing the connection between the active drill rod 5 and the extended drill rod 6. At this time, when the active drill rod 5 rotates, it can drive the first connecting seat 1, the second connecting seat 2 and the extended drill rod 6 to rotate together.

[0056] 2. When removing the auxiliary connection device of the drill rod from the active drill rod 5, simply remove the extended drill rod 6 from the borehole, place the extended drill rod 6 in the designated position, remove the pin between the extended drill rod 6 and the second connecting seat 2, move the first connecting seat 1 and the second connecting seat 2 to the support 4 through the active drill rod 5, put the first connecting seat 1 and the second connecting seat 2 back on the support 4, and then remove the pin between the first connecting seat 1 and the active drill rod 5.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A drill pipe auxiliary connection device, characterized in that, It includes a first connecting seat (1), a second connecting seat (2), and a connector (3), wherein the connector (3) is connected between the first connecting seat (1) and the second connecting seat (2), and the connector (3) is flexible; the first connecting seat (1) is used to connect with the active drill rod (5), and the second connecting seat (2) is used to connect with the extended drill rod (6); the drill rod auxiliary connection device has a first state and a second state; When the drill pipe auxiliary connection device is in the first state, the first connecting seat (1) and the second connecting seat (2) are separated, and the first connecting seat (1) and the second connecting seat (2) are connected by the connecting member (3); when the drill pipe auxiliary connection device is in the second state, the first connecting seat (1) and the second connecting seat (2) are directly connected.

2. The drill pipe auxiliary connection device as described in claim 1, characterized in that, The first connecting seat (1) and / or the second connecting seat (2) are cylindrical structures; when the drill rod auxiliary connecting device is in the second state, the first connecting seat (1) and the second connecting seat (2) are sleeved together.

3. The drill pipe auxiliary connection device as described in claim 2, characterized in that, The first connecting seat (1) includes a first cylinder (11) and a second cylinder (12) connected to each other. The second connecting seat (2) includes a third cylinder (21) and a fourth cylinder (22) connected to each other. The first cylinder (11) is used to connect with the active drill rod (5), and the fourth cylinder (22) is used to connect with the extended drill rod (6). When the drill rod auxiliary connecting device is in the second state, the second cylinder (12) is sleeved with the third cylinder (21).

4. The drill pipe auxiliary connection device as described in claim 2, characterized in that, The two ends of the connector (3) are respectively connected to the inner wall of the first connecting seat (1) and the inner wall of the second connecting seat (2); when the drill rod auxiliary connection device is in the second state, the connector (3) is housed in the first connecting seat (1) and / or the second connecting seat (2).

5. The drill pipe auxiliary connection device as described in claim 2, characterized in that, The first connecting seat (1) is provided with a first limiting structure (13). When the first connecting seat (1) is sleeved with the second connecting seat (2), the end of the second connecting seat (2) can abut against the first limiting structure (13). And / or, the second connecting seat (2) is provided with a second limiting structure (23), when the first connecting seat (1) is sleeved with the second connecting seat (2), the end of the first connecting seat (1) can abut against the second limiting structure (23).

6. The drill pipe auxiliary connection device as described in claim 1, characterized in that, One of the first connecting seat (1) and the second connecting seat (2) is provided with a connecting groove (15), and the other is provided with a limiting pin (25); the connecting groove (15) has a slot (150), which is used for the limiting pin (25) to enter into the connecting groove (15) or to disengage from the connecting groove (15); When the drill pipe auxiliary connection device is in the second state, the limiting pin (25) is screwed into the connection groove (15) under the rotational drive of the active drill pipe (5).

7. The drill pipe auxiliary connection device as described in claim 6, characterized in that, The connecting groove (15) includes a transition groove (151) and a slot (152). The slot (152) is located on one side of the opening (150) along the circumferential direction of the first connecting seat (1). One end of the transition groove (151) is connected to the opening (150), and the other end of the transition groove (151) is connected to the slot (152). When the drill pipe auxiliary connecting device is in the second state, the limiting pin (25) is located in the slot (152).

8. The drill pipe auxiliary connection device as described in claim 1, characterized in that, The second connecting seat (2) has a hoisting structure (26) on its outer wall.

9. The drill pipe auxiliary connection device as described in claim 1, characterized in that, The connector (3) is a metal rope or a metal chain.

10. The drill pipe auxiliary connection device as described in any one of claims 1-9, characterized in that, The drill pipe auxiliary connection device further includes a support (4), the support (4) includes a receiving cylinder (41) and a support leg (42) connected to the receiving cylinder (41); the first connecting seat (1) and / or the second connecting seat (2) are cylindrical structures; the drill pipe auxiliary connection device also has a receiving state; When the drill pipe auxiliary connection device is in the receiving state, the first connecting seat (1) is sleeved with the second connecting seat (2), and the second connecting seat (2) is sleeved with the receiving cylinder (41).

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