Power signal transmission device and iron drill

Abstract

This invention discloses a power signal transmission device and a drill bit. The power signal transmission device includes a transmitting unit, a conversion unit, a control unit, and a clamping unit. The transmitting unit is electrically connected to a circular track. The conversion unit is located inside the circular track, with a gap between the conversion unit and the track. The conversion unit converts a changing magnetic field into a high-frequency current. The control unit is electrically connected to the conversion unit, and the clamping unit is electrically connected to the control unit. The control unit receives and rectifies the high-frequency current converted by the conversion unit and controls the clamping unit to clamp or release the drill bit. Through the non-contact conversion unit and the circular track, the high-frequency oscillating current emitted by the transmitting unit is converted from electromagnetism to electromagnetism, and then received and rectified by the control unit to control the clamping unit to clamp or release the drill bit. This improves the success rate and efficiency of one-time threading and unthreading, and also enables the clamping unit to actively reset, preventing the drill bit from getting stuck.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and in particular to a power signal transmission device and an iron drill. Background Technology

[0002] The iron drill bit is an automated tool for attaching and detaching drill bits and drill collars, replacing traditional hydraulic tongs and B-type tongs. The iron drill bit consists of a punching tong and a rotating tong. During attaching, the lower jaw of the punching tong clamps the lower drill bit, while the rotating tong clamps the upper drill bit. The rotating tong then performs the coupling. After coupling, the upper jaw of the punching tong clamps the upper drill bit and rotates it slightly around the center of the lower drill bit, ultimately achieving a tight coupling. The detaching process is the reverse of the above steps.

[0003] There are two types of existing iron drill tongs. One type is a non-continuously rotating rotary tong, which requires repeated punching and tightening operations, resulting in long uncoupling times, low work efficiency, and a low success rate for one-time uncoupling. The other type is a continuously rotating rotary tong, but the clamping unit cannot automatically reset after clamping the drill bit, making it very easy for the drill to get stuck.

[0004] Therefore, it is necessary to provide a new power signal transmission device and a new iron drill to solve the above-mentioned technical problems. Summary of the Invention

[0005] The main objective of this invention is to provide a power signal transmission device and a steel drill, which aims to solve the problems of low working efficiency and the inability of the clamping unit to automatically reset in the prior art.

[0006] To achieve the above objectives, the present invention provides a power signal transmission device, comprising:

[0007] Circular track;

[0008] The transmitting unit is electrically connected to the circular track;

[0009] A conversion unit is disposed inside the annular track, and there is a gap between the conversion unit and the annular track. The conversion unit can convert the changing magnetic field into a high-frequency current.

[0010] The control unit and the clamping unit are electrically connected. The control unit is electrically connected to the conversion unit, and the clamping unit is electrically connected to the control unit. The control unit can receive and rectify the high-frequency current converted by the conversion unit to control the clamping unit to clamp or release the drill bit.

[0011] In one embodiment, the conversion unit includes a control box and a pickup block, the pickup block being electrically connected to the control box, the pickup block being disposed on the inner side of the circular track, and the pickup block having the gap between it and the circular track.

[0012] In one embodiment, the annular track has an open section and a closed section, the size of which is larger than the diameter of the rotating main clamp.

[0013] In one embodiment, the number of pickup blocks is at least two, and at least one of the pickup blocks is located inside the closed segment.

[0014] In one embodiment, the annular track includes two annular guide rods, which are spaced apart. Each pickup block has a limiting groove corresponding to the position of the annular guide rod, and the annular guide rod passes through the limiting groove.

[0015] In one embodiment, the control unit is internally equipped with a communication module and an energy storage element.

[0016] In one embodiment, the clamping unit includes a hydraulic pump and a clamping cylinder, and the control unit is electrically connected to the hydraulic pump; the clamping cylinder includes a cylinder body and a clamping rod, the clamping cylinder is connected to the hydraulic pump through an oil supply pipe, the clamping rod is telescopically disposed in the cylinder body, and the clamping rod can abut against the outer circumferential surface of the drill bit.

[0017] In addition, embodiments of the present invention also provide a steel drill operator, comprising:

[0018] The main body of the iron drill;

[0019] A rotating main clamp, which is rotatably mounted on the main body of the iron drill;

[0020] As described above, in the power signal transmission device, the transmitter box and the annular track are disposed on the main body of the iron drill, and the conversion unit, the control unit and the clamping unit are disposed on the rotating main clamp.

[0021] In one embodiment, the number of clamping units is at least two, and each clamping unit is evenly spaced around the rotation axis of the rotating main clamp.

[0022] In one embodiment, the rotating main clamp has a receiving groove for accommodating the drill bit.

[0023] In this invention, the transmitting unit transmits a high-frequency oscillating current to the circular track, creating a changing magnetic field. The conversion unit, located inside the circular track but not in contact with it, converts the changing magnetic field into a high-frequency current. The control unit receives and rectifies this high-frequency current to control the clamping unit to clamp or release the drill bit. Specifically, the high-frequency oscillating current emitted by the transmitting unit undergoes an electro-magnetic-electro-electric conversion between the circular track and the conversion unit, and is ultimately received and rectified by the control unit to control the clamping unit to clamp or release the drill bit, thus achieving power transmission between the drill body and the rotating tongs. In related technologies, non-continuously rotating rotary tongs have low working efficiency because they need to repeatedly perform punching and clamping operations within a certain angle. Continuously rotating rotary tongs mainly use a jaw plate climbing mechanism to achieve passive reset of the clamping unit. This mechanism achieves the climbing and clamping of the drill bit by misaligning the jaw plate with the frame. The floating body provides resistance through an external brake band to achieve passive misalignment. The jaw plate is reset by releasing the brake band, allowing the jaw plate to be passively reset under the action of centrifugal force. However, because the jaw plate is passively clamped and reset, it is very easy for the drill bit to get stuck if it fails to reset. This power signal transmission device uses a non-contact conversion unit and a circular track to convert the high-frequency oscillating current emitted by the transmitting unit into an electromagnetic-electrical signal. The control unit then receives the signal and controls the clamping unit to clamp or release the drill bit. This allows the rotating tongs to rotate continuously, avoiding repeated snapping and clamping operations, thus improving the success rate and efficiency of one-time snapping and unscrewing. Furthermore, by transmitting the power signal to the control unit in a non-contact manner, the device drives the clamping unit to clamp or release the drill bit, enabling the clamping unit to actively reset and preventing the drill from getting stuck. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the power signal transmission device in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A;

[0027] Figure 3 This is a schematic diagram of the overall structure of the power signal transmission device (the circular track is another structural form) in an embodiment of the present invention;

[0028] Figure 4This is a schematic diagram of the overall structure of the iron drill in an embodiment of the present invention;

[0029] Figure 5 for Figure 4 A bottom view.

[0030] Explanation of icon numbers:

[0031]

[0032]

[0033] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0036] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0039] This invention proposes a power signal transmission device and a steel drill, aiming to solve the problems of low working efficiency and the inability of the clamping unit to automatically reset in the prior art.

[0040] like Figure 1 As shown, a power signal transmission device is used to realize the transmission of power signals between the drill body 600 and the rotating main clamp 700. The power signal transmission device includes a transmitting unit 100, a conversion unit 300, a control unit 400, and a clamping unit 500. The transmitting unit 100 is electrically connected to the annular track 200. The conversion unit 300 is disposed inside the annular track 200, and there is a gap between the conversion unit 300 and the annular track 200. The conversion unit 300 can convert a changing magnetic field into a high-frequency current. The control unit 400 is electrically connected to the conversion unit 300, and the clamping unit 500 is electrically connected to the control unit 400. The control unit 400 can receive and rectify the high-frequency current converted by the conversion unit 300 to control the clamping unit 500 to clamp or release the drill bit. In this embodiment, the transmitting unit 100 and the annular track 200 are mounted on the drill body 600, and the conversion unit 300, the control unit 400, and the clamping unit 500 are mounted on the rotating main clamp 700.

[0041] In an embodiment of the invention, the transmitting unit 100 can transmit a high-frequency oscillating current to the annular track 200 to form a changing magnetic field at the annular track 200; the conversion unit 300 is disposed inside the annular track 200 and does not contact the annular track 200, and can convert the changing magnetic field into a high-frequency current; the control unit 400 can receive and rectify the high-frequency current converted by the conversion unit 300 to control the clamping unit 500 to clamp or release the drill bit. Specifically, the high-frequency oscillating current emitted by the transmitting unit 100 can undergo an electro-magnetic-electro-electric conversion between the annular track 200 and the conversion unit 300, and is finally received and rectified by the control unit 400 to control the clamping unit 500 to clamp or release the drill bit, thereby realizing the power transmission between the iron drill body 600 and the rotating main tong 700. In related technologies, the non-continuously rotating rotary tong 700 has low work efficiency because it needs to repeatedly perform punching and clamping operations within a certain angle (mainly due to the stroke limitation of the punching cylinder, the angle of punching and clamping is generally no more than 60°). The continuously rotating rotary tong 700 mainly uses a jaw plate climbing mechanism to achieve the passive reset of the clamping unit 500. It achieves the climbing and clamping of the drill bit by the angular misalignment between the jaw plate and the frame. The floating body achieves passive misalignment by providing resistance through an external brake band. The jaw plate is reset by releasing the brake band to allow the jaw plate to be passively reset under the action of rotational centrifugal force. However, since the jaw plate is passively clamped and reset, it is very easy to cause the drill bit to get stuck due to failure to reset. The power signal transmission device, through a non-contact conversion unit 300 and a circular track 200, converts the high-frequency oscillating current emitted by the transmitting unit 100 into an electromagnetic-electrical signal, which is then received by the control unit 400 and used to control the clamping unit 500 to clamp or release the drill bit. This allows the rotating main tong 700 to rotate continuously, avoiding repeated snapping and clamping operations, thus improving the success rate and efficiency of one-time snapping and unscrewing. On the other hand, by transmitting the power signal to the control unit 400 in a non-contact manner, the clamping unit 500 can be driven to clamp or release the drill bit, enabling the clamping unit 500 to actively reset and preventing the drill from getting stuck.

[0042] In addition, the power signal transmission device transmits power signals in a contactless manner, effectively preventing cables from getting tangled and crossed during the work of the drill operator. It should be noted that the process of the conversion unit 300 converting the changing magnetic field into high-frequency current is existing technology. For details, please refer to the conversion process between the changing magnetic field and high-frequency current in the dynamic wireless power supply system.

[0043] like Figure 1As shown, the conversion unit 300 includes a control box 310 and a pickup block 320. The pickup block 320 is electrically connected to the control box 310. The pickup block 320 is disposed on the inner side of the annular track 200, and there is a gap between the pickup block 320 and the annular track 200. Both the control box 310 and the pickup block 320 are mounted on the rotating main clamp 700, with the control box 310 mounted at the center of the annular track 200. The pickup block 320 is used to convert the changing magnetic field into a high-frequency current, and the control box 310 is used to rectify the current converted by the pickup block 320 and output it to the control unit 400.

[0044] like Figure 1 and Figure 4 As shown, the annular track 200 has an open section 210 and a closed section 220, and the size of the open section 210 is larger than the diameter of the rotating main clamp 700. The annular track 200 has an opening, and the opening of the annular track 200 is an opening section 210. In this embodiment, the rotating main tong 700 has a receiving groove 710 for accommodating the drill bit. The drill bit can be installed at the bottom of the receiving groove 710 and clamped by the clamping unit 500 installed on the rotating main tong 700 so as to rotate with the rotating main tong 700. By opening the annular track 200, the drill bit can pass through the opening and be placed in the receiving groove 710, which simplifies the installation process of the drill bit. The specific installation process of the drill bit is as follows: First, rotate the rotating main tong 700 so that the opening of the receiving groove 710 of the rotating main tong 700 is aligned with the opening of the annular track 200. Then, pass the drill bit through the opening of the annular track 200 and the opening of the rotating main tong 700 and place it at the bottom of the receiving groove 710. Finally, the clamping unit 500 clamps the drill bit.

[0045] like Figure 1 As shown, there are at least two pickup blocks 320, and at least one pickup block 320 is located inside the closed section 220. The presence of at least one pickup block 320 inside the closed section 220 ensures that there is always an electro-magnetic-electric conversion between the annular track 200 and the conversion unit 300, thus ensuring that there is always a power signal transmission between the drill body 600 and the rotating main clamp 700. If all pickup blocks 320 are rotated to the opening of the annular track 200, none of them can convert the changing magnetic field into a high-frequency current. This would cause the power signal transmission between the transmitting unit 100 and the control unit 400 to be disconnected, and consequently, the power signal transmission between the drill body 600 and the rotating main clamp 700 would also be disconnected. In this embodiment, there are two pickup blocks 320, and the two pickup blocks 320 are symmetrically arranged. Alternatively, the number of pickup blocks 320 can be three, four, or other values.

[0046] like Figure 1As shown, the annular track 200 includes two annular guide rods 230, which are spaced apart. Each pickup block 320 has a limiting groove 321 corresponding to a position on one of the annular guide rods 230, and the annular guide rods 230 pass through the limiting grooves 321. The annular track 200 is integrally bent, and by inserting the annular guide rods 230 of the annular track 200 into the limiting grooves 321 of the pickup block 320, it can prevent the pickup block 320 from detaching from the annular track 200 when moving along it. In this embodiment, the annular track 200 can be designed in two structural forms, such as... Figure 1 As shown, one type has two annular guide rails distributed vertically, such as... Figure 3 As shown, another type is two annular guide rails distributed inside and outside. Both of the above structural forms of the annular track 200 can prevent the picking block 320 from leaving the annular track 200 when it moves along the annular track 200.

[0047] The control unit 400 internally houses a communication module and an energy storage element. The communication module communicates with the external control cabinet of the drill bit 600, receiving and executing commands from the drill bit 600, and transmitting status parameters. The energy storage element is a backup battery, which maintains the normal operation of the control unit 400 and also serves as an emergency energy unit, providing emergency power for equipment inspection and communication in the event of a malfunction in the rotating main clamp 700. It should be noted that all electronic components in this embodiment are designed for explosion-proof installation or housed in explosion-proof cabinets to meet the working environment requirements of the drill bit 600. The control unit 400 transmits power and control detection signals to the clamping unit 500, enabling the clamping unit 500 to clamp and release the drill bit, while simultaneously controlling and detecting the clamping force and the clamping / releasing status.

[0048] like Figure 1 As shown, the clamping unit 500 includes a hydraulic pump 510 and a clamping cylinder 520. The control unit 400 is electrically connected to the hydraulic pump 510. The clamping cylinder 520 includes a cylinder body 521 and a clamping rod 522. The clamping cylinder 520 is connected to the hydraulic pump 510 through an oil supply pipe. The clamping rod 522 is telescopically mounted on the cylinder body 521 and can abut against the outer circumferential surface of the drill bit. The control unit 400 is used to control the hydraulic pump 510 to provide hydraulic energy to the clamping cylinder 520, thereby driving the clamping cylinder 520 to clamp or release the drill bit. The clamping cylinder 520 is a telescopic cylinder, which clamps the drill bit through the telescopic movement of the clamping rod 522. In related technologies, rotary pliers drive the drill bit body to rotate through friction, which can easily damage the drill bit body. However, the clamping unit 500 clamps the drill bit by having the clamping rod 522 abut against the outer circumferential surface of the drill bit, which can reduce damage to the drill bit.

[0049] It should be noted that, in addition to using hydraulic drive to clamp the drill bit, the clamping unit 500 can also use other drive methods such as electric cylinders to clamp the drill bit.

[0050] In addition, the present invention also provides a drill maker, such as Figure 4 As shown, the iron drill includes an iron drill body 600, a rotating main clamp 700, and a power signal transmission device as described above. The rotating main clamp 700 is rotatably mounted on the iron drill body 600. The transmitter box and the annular track 200 are mounted on the iron drill body 600, and the conversion unit 300, the control unit 400, and the clamping unit 500 are mounted on the rotating main clamp 700.

[0051] Since the iron drill includes the power signal transmission device as described above, the iron drill possesses all the beneficial effects of the aforementioned power signal transmission device, which will not be elaborated here.

[0052] like Figure 5 As shown, there are at least two clamping units 500, and each clamping unit 500 is evenly spaced around the rotation axis of the rotating main clamp 700. The multiple clamping units 500, evenly spaced around the rotation axis of the rotating main clamp 700, clamp the drill bit, ensuring the stability of the drill bit's position after clamping and adapting to various different drill bits, thus expanding the driller's applicability. In this embodiment, there are three clamping units 500, and the three clamping units 500 are evenly spaced around the rotation axis of the rotating main clamp 700.

[0053] like Figure 4 As shown, the rotary tong 700 has a receiving groove 710 for accommodating the drill bit. The drill bit can be installed at the bottom of the receiving groove 710 and clamped by the clamping unit 500 installed on the rotary tong 700, so as to rotate with the rotary tong 700; by providing a receiving groove 710 on the rotary tong 700, the drill bit can pass through the opening of the receiving groove 710 and be placed in the receiving groove 710, which simplifies the installation process of the drill bit.

[0054] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A power signal transmission device for implementing power signal transmission between an iron roughneck body (600) and a rotating master tong (700), characterized in that, include: Circular track (200); A transmitting unit (100) is electrically connected to the circular track (200); A conversion unit (300) is disposed inside the annular track (200), and there is a gap between the conversion unit (300) and the annular track (200). The conversion unit (300) can convert the changing magnetic field into a high-frequency current. The control unit (400) and the clamping unit (500) are electrically connected. The control unit (400) is electrically connected to the conversion unit (300), and the clamping unit (500) is electrically connected to the control unit (400). The control unit (400) can receive and rectify the high-frequency current converted by the conversion unit (300) to control the clamping unit (500) to clamp or release the drill bit.

2. The power signal transmission device as described in claim 1, characterized in that, The conversion unit (300) includes a control box (310) and a pickup block (320). The pickup block (320) is electrically connected to the control box (310). The pickup block (320) is disposed on the inner side of the circular track (200), and there is a gap between the pickup block (320) and the circular track (200).

3. The power signal transmission device as described in claim 2, characterized in that, The annular track (200) has an open section (210) and a closed section (220), the size of which is larger than the diameter of the rotating main clamp (700).

4. The power signal transmission device as described in claim 3, characterized in that, The number of the pickup blocks (320) is at least two, and at least one of the pickup blocks (320) is located inside the closed segment (220).

5. A power signal transmission device as described in claim 2, characterized in that, The annular track (200) includes two annular guide rods (230), which are spaced apart. Each pickup block (320) has a limiting groove (321) corresponding to the position of the annular guide rod (230), and the annular guide rod (230) passes through the limiting groove (321).

6. The power signal transmission device as described in claim 1, characterized in that, The control unit (400) is internally equipped with a communication module and an energy storage element.

7. A power signal transmission device as described in any one of claims 1-6, characterized in that, The clamping unit (500) includes a hydraulic pump (510) and a clamping cylinder (520). The control unit (400) is electrically connected to the hydraulic pump (510). The clamping cylinder (520) includes a cylinder body (521) and a clamping rod (522). The clamping cylinder (520) is connected to the hydraulic pump (510) through an oil supply pipe. The clamping rod (522) is telescopically disposed on the cylinder body (521) and can abut against the outer circumferential surface of the drill bit.

8. A type of iron drill, characterized in that, include: Iron drill body (600); Rotary main clamp (700), which is rotatably mounted on the iron drill body (600); The power signal transmission device as described in any one of claims 1-7, wherein the transmitting unit (100) and the annular track (200) are disposed on the iron drill body (600), and the conversion unit (300), the control unit (400) and the clamping unit (500) are disposed on the rotating main clamp (700).

9. The iron drill as described in claim 8, characterized in that, The number of clamping units (500) is at least two, and each clamping unit (500) is evenly spaced around the rotation axis of the rotating main clamp (700).

10. The iron drill as described in claim 8, characterized in that, The rotary main tong (700) has a receiving slot (710) for accommodating the drill bit.

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