Rotary drilling rig and position detection device and position detection method for power head of rotary drilling rig

Abstract

The invention discloses a rotary drilling rig and a power head position detection device and method thereof, the power head position detection device comprises an oil cylinder arranged on one side of a mast, a rack, a spring connected to the rack, a guide rod connected to the spring, a contour wheel hinged to the rack, and an encoder arranged on one side of the rack, an anti-skid belt is arranged on one side of the mast, the profiling wheel abuts against the anti-skid belt, and the rack comprises a sleeve, a connecting plate connected to the periphery of the sleeve, a bent plate, a transition plate arranged between the connecting plate and the bent plate, a mounting shaft arranged on the transition plate, two lug plates which are arranged on the bent plate and correspond to each other, and supporting plates arranged on the outer sides of the lug plates. The profiling wheel is hinged between the two lug plates, the encoder is fixed to the outer side of the supporting plate, and the encoder is connected with a conversion module; through contact rotation of the contour wheel and the mast and in combination with a data collection function of the encoder, accurate detection of the position of the power head is realized, the detection efficiency is improved, and the maintenance difficulty is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection of the power head of a rotary drilling rig, and particularly relates to a rotary drilling rig, a power head position detection device and a position detection method thereof. Background Art

[0002] In the construction operation of a rotary drilling rig, finding the pressurizing platform is not only a key step in construction but also a major technical challenge faced by technicians. The traditional operation method mainly relies on the personal experience of the operator for judgment. This highly manual-experience-dependent approach often has great uncertainty and is extremely likely to lead to operation errors and safety accidents. To solve this problem, modern rotary drilling rig technology has introduced an auxiliary operating system, the goal of which is to achieve the visualization of the pressurizing platform through technical means, thereby providing a more intuitive and accurate reference for the operator. The core of this system lies in being able to collect the position parameters of the power head in real time and accurately. Among them, the cylinder stroke, as a key indicator, plays a crucial role in judging the position of the pressurizing platform.

[0003] In the prior art, there are three methods for realizing the position detection of the power head, namely the method of driving a rotary encoder by a sprocket chain, the method of a wire rope sensor, and the method of pasting labels on the mast and cooperating with a reader and a data processing module. However, for the method of driving a rotary encoder by a sprocket chain, although it can achieve position detection to a certain extent, its structure is relatively complex, increasing the manufacturing cost of the equipment. More importantly, in the harsh working environment of a rotary drilling rig, the long chain is prone to shaking. This shaking may not only damage the rotary encoder but also affect the measurement accuracy. In addition, the chain tension is also a difficult problem to solve. Too loose or too tight may have an adverse impact on the measurement results.

[0004] The method of the wire rope sensor has the problem of poor reliability. Since the working environment of a rotary drilling rig is usually very harsh, including a large amount of pollutants such as oil stains and mud, these pollutants are very likely to damage the wire rope, resulting in its breakage or failure. Once the wire rope sensor fails, it will directly affect the visualization effect of the pressurizing platform, thereby having an adverse impact on the construction operation. Another method of pasting labels on the mast and cooperating with a reader and a data processing module, although it avoids the complexity of the mechanical structure to a certain extent, has high environmental requirements. The mast is often attached with pollutants such as oil stains and mud, which are very likely to block or contaminate the labels, thereby affecting the recognition ability of the reader. Once the recognition ability decreases, it will directly affect the accuracy and reliability of the position detection. In summary, there is an urgent need for a rotary drilling rig, a power head position detection device and a position detection method thereof. Summary of the Invention

[0005] To solve some or all of the technical problems existing in the above-mentioned prior art, the present invention provides a rotary drilling rig and its power head position detection device and position detection method.

[0006] On the one hand, the present invention provides a power head position detection device for a rotary drilling rig. The power head position detection device is arranged between the power head and the mast and is hinged to the power head. The power head position detection device includes an oil cylinder arranged on one side of the mast, a frame, a spring connected to the frame, a guide rod connected to the spring, a profiling wheel hinged to the frame, and an encoder arranged on one side of the frame. Among them:

[0007] The oil cylinder is connected between the mast and the power head. An anti-slip belt is arranged on one side of the mast, and the profiling wheel abuts against the anti-slip belt;

[0008] The frame includes a sleeve, a connecting plate connected to the outer periphery of the sleeve, a bending plate, a transition plate arranged between the connecting plate and the bending plate, a mounting shaft arranged on the transition plate, two corresponding ear plates arranged on the bending plate, and a support plate arranged outside the ear plates;

[0009] The profiling wheel is hinged between the two ear plates through a first hinge shaft. The encoder is fixed to the outside of the support plate through a fastener. The encoder is connected to the first hinge shaft through a coupling, and the encoder is connected with a conversion module;

[0010] The guide rod includes a fixed section, a threaded section, and a shoulder arranged between the fixed section and the threaded section. One end of the spring is sleeved on the outer periphery of the mounting shaft, and the other end is sleeved on the outer periphery of the threaded section. The fixed section and the sleeve are both hinged to the top of the power head.

[0011] Further, in the above-mentioned power head position detection device for a rotary drilling rig, two corresponding mounting plates are arranged at the top of the power head. The second hinge shaft is arranged between the two mounting plates and is sleeved in the sleeve. The sleeve is hinged to the mounting plate through the second hinge shaft.

[0012] Further, in the above-mentioned power head position detection device for a rotary drilling rig, a mounting seat is arranged at the top of the power head. The fixed section is hinged to the mounting seat through the third hinge shaft.

[0013] Further, in the above-mentioned power head position detection device for a rotary drilling rig, a first through hole is opened on the ear plate. The first hinge shaft is arranged in the first through hole, and a bearing is arranged between the first hinge shaft and the first through hole.

[0014] Further, in the above power head position detection device for a rotary drilling rig, a second through hole is formed in the support plate, an output shaft of the encoder is disposed in the second through hole, and the output shaft is connected to the coupling.

[0015] As a specific embodiment, in the above power head position detection device for a rotary drilling rig, the oil cylinder includes a cylinder barrel fixed to the upper part of one side of the mast and a push rod sleeved in the cylinder barrel, and a free end of the push rod is connected to the top of the power head.

[0016] As a specific embodiment, in the above power head position detection device for a rotary drilling rig, an adjusting nut is arranged between the spring and the shaft shoulder, and the adjusting nut is threadedly connected to the outer periphery of the threaded section.

[0017] As a specific embodiment, in the above power head position detection device for a rotary drilling rig, an anti-slip ring is sleeved on the outer periphery of the profiling wheel.

[0018] The power head position detection method for a rotary drilling rig provided by the present invention includes:

[0019] Step 1: By controlling the telescopic oil cylinder to expand and contract, thereby controlling the power head to move up and down along the mast. During the up and down movement of the power head, the profiling wheel rotates due to contact with the mast.

[0020] Step 2: As the profiling wheel rotates, the encoder connected to the profiling wheel through the coupling also rotates synchronously and collects data. Then, the encoder synchronously transmits these data to the conversion module, and the conversion module measures the specific position information of the power head according to the data.

[0021] On the other hand, the present invention also provides a rotary drilling rig, and the rotary drilling rig includes the above power head position detection device.

[0022] The rotary drilling rig and its power head position detection device and position detection method of the present invention have the following advantages and positive effects:

[0023] (1) Through the contact rotation of the profiling wheel and the mast, combined with the data collection function of the encoder, the present invention realizes the accurate detection of the power head position, improves the detection efficiency, reduces the maintenance difficulty. By setting components such as a frame, a spring, and a guide rod in the device, it plays a good role in support, buffering, and guiding, ensuring the stability and reliability during the movement of the power head;

[0024] (2) In the present invention, the encoder rotates synchronously with the profiling wheel, can accurately collect data on the rotation angle, and transmit this data to the conversion module in real time. The conversion module processes and analyzes this data according to a preset algorithm and model to obtain the specific position information of the power head. This process not only has high measurement accuracy but is also not affected by the construction environment, showing good reliability and practicality.

[0025] (3) The structure of the present invention is simple and convenient for disassembly and assembly. In practical applications, the detection device can be appropriately adjusted and optimized according to the specific model of the rotary drilling rig and the construction environment. For example, appropriate profiling wheels and anti-slip belts can be selected according to the shape and size of the mast, and parameters such as the thrust and stroke of the oil cylinder can be adjusted synchronously, showing good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0027] Figure 1 is a schematic structural diagram of the power head position detection device for a rotary drilling rig according to the present invention;

[0028] Figure 2 is a schematic structural diagram of the frame in the power head position detection device for a rotary drilling rig according to the present invention;

[0029] Figure 3 is a schematic structural diagram of the guide rod in the power head position detection device for a rotary drilling rig according to the present invention;

[0030] Figure 4 is a schematic diagram of the power head rising state of the power head position detection device for a rotary drilling rig according to the present invention;

[0031] Figure 5 is a schematic diagram of the power head descending state of the power head position detection device for a rotary drilling rig according to the present invention;

[0032] Figure 6 is Figure 5 a partial enlarged view of I in.

[0033] Description of the reference numerals:

[0034] 1 - Power head, 11 - Mounting base, 12 - Mounting plate, 2 - Power head position detection device, 21 - Encoder, 22 - Frame, 221 - Sleeve, 222 - Mounting shaft, 223 - Bent plate, 224 - Ear plate, 225 - Transition plate, 226 - Support plate, 227 - Connecting plate, 23 - Spring, 24 - Guide rod, 241 - Fixed section, 242 - Shoulder, 243 - Threaded section, 25 - Third hinge shaft, 26 - Adjusting nut, 27 - Second hinge shaft, 28 - First hinge shaft, 29 - Bearing, 210 - Profiling wheel, 211 - Coupling, 212 - Fastener, 3 - Oil cylinder, 4 - Mast, 5 - Anti - slip belt. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than 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 making creative efforts shall fall within the scope of protection of the present invention.

[0036] As Figures 1 to 6 shown, the present invention provides a rotary drilling rig and its power head position detection device and position detection method.

[0037] On the one hand, the present invention discloses a power head position detection device for a rotary drilling rig. The power head position detection device 2 is arranged between the power head 1 and the mast 4 and is hinged to the power head 1. The power head position detection device 2 includes an oil cylinder 3 arranged on one side of the mast 4, a frame 22, a spring 23 connected to the frame 22, a guide rod 24 connected to the spring 23, a profiling wheel 210 hinged to the frame 22, and an encoder 21 arranged on one side of the frame 22. Among them, the oil cylinder 3 is connected between the mast 4 and the power head 1. An anti-slip belt 5 is arranged on one side of the mast 4. The profiling wheel 210 abuts against the anti-slip belt 5. The material of the anti-slip belt 5 can be an anti-slip material such as rubber. With such an arrangement, the friction between the profiling wheel 210 and the anti-slip belt 5 can be increased, and the profiling wheel 210 can be prevented from slipping during rotation. The frame 22 includes a sleeve 221, a connecting plate 227 connected to the outer periphery of the sleeve 221, a bending plate 223, a transition plate 225 arranged between the connecting plate 227 and the bending plate 223, a mounting shaft 222 arranged on the transition plate 225, two ear plates 224 arranged on the bending plate 223 and corresponding to each other, and a support plate 226 arranged outside the ear plates 224. The profiling wheel 210 is hinged between the two ear plates 224 through a first hinge shaft 28. The encoder 21 is fixed to the outside of the support plate 226 through a fastener 212. The encoder 21 is connected to the first hinge shaft 28 through a coupling 211. The encoder 21 is connected to a conversion module (not shown in the figure). The conversion module is used to measure the specific position information of the power head 1 according to the data collected by the encoder 21. The guide rod 24 includes a fixed section 241, a threaded section 243, and a shoulder 242 arranged between the fixed section 241 and the threaded section 243. One end of the spring 23 is sleeved on the outer periphery of the mounting shaft 222, and the other end is sleeved on the outer periphery of the threaded section 243. By arranging the spring 23, the contact pressure between the profiling wheel 210 and the anti-slip belt 5 is provided. The fixed section 241 and the sleeve 221 are both hinged to the top end of the power head 1.

[0038] Further, in the power head position detection device for a rotary drilling rig of the present invention, two corresponding mounting plates 12 are arranged at the top end of the power head 1. A second hinge shaft 27 is arranged between the two mounting plates 12 and is sleeved in the sleeve 221. The sleeve 221 is hinged to the mounting plate 12 through the second hinge shaft 27. This structure enables the frame 22 to swing at a certain angle.

[0039] Further, in the power head position detection device for a rotary drilling rig of the present invention, a mounting seat 11 is arranged at the top end of the power head 1. The fixed section 241 is hinged to the mounting seat 11 through a third hinge shaft 25. This structure enables the guide rod 24 to swing at a certain angle.

[0040] Further, in the power head position detection device for a rotary drilling rig according to the present invention, a first through hole is provided on the ear plate 224, the first hinge shaft 28 is disposed in the first through hole, and a bearing 29 is provided between the first hinge shaft 28 and the first through hole. With such a setting, the frictional resistance during the rotation of the profiling wheel 210 can be reduced, the smoothness of the rotation of the profiling wheel 210 is improved, and further the detection accuracy of the encoder 21 is improved.

[0041] Further, in the power head position detection device for a rotary drilling rig according to the present invention, a second through hole is provided on the support plate 226, the output shaft of the encoder 21 is disposed in the second through hole, and the output shaft is connected to the coupling 211. With such a setting, during the rotation of the profiling wheel 210, the coupling 211 can be driven to rotate synchronously, and further the encoder 21 is driven to rotate synchronously, ensuring the synchronous rotation between the encoder 21 and the profiling wheel 210, and collecting accurate data for transmission to the conversion module.

[0042] As a specific implementation manner, in the power head position detection device for a rotary drilling rig according to the present invention, the oil cylinder 3 includes a cylinder barrel fixed to the upper part of one side of the mast 4 and a push rod sleeved in the cylinder barrel. The free end of the push rod is connected to the top of the power head 1. During use, as the push rod axially displaces in the cylinder barrel, the power head 1 is driven to axially displace relative to the oil cylinder 3.

[0043] As a specific implementation manner, in the power head position detection device for a rotary drilling rig according to the present invention, an adjusting nut 26 is provided between the spring 23 and the shaft shoulder 242, and the adjusting nut 26 is threadedly connected to the outer periphery of the threaded section 243. With such a setting, by rotating the adjusting nut 26, the compression amount of the spring 23 can be changed, the pre-tightening force of the spring 23 can be conveniently adjusted, and further the contact pressure between the profiling wheel 210 and the anti-slip belt 5 can be adjusted to ensure the effective contact between the profiling wheel 210 and the anti-slip belt 5.

[0044] As a specific implementation manner, in the power head position detection device for a rotary drilling rig according to the present invention, an anti-slip ring is sleeved on the outer periphery of the profiling wheel 210, and the material of the anti-slip ring can be an anti-slip material such as rubber. With such a setting, the frictional force between the profiling wheel 210 and the anti-slip belt 5 can be increased, and the profiling wheel 210 can be prevented from slipping during rotation.

[0045] The power head position detection method for a rotary drilling rig according to the present invention is implemented by using the above-mentioned power head position detection device 2, and specifically includes the following steps:

[0046] Step 1: By controlling the telescopic oil cylinder 3 to expand and contract, the power head 1 is controlled to move up and down along the mast 4. During the up and down movement of the power head 1, the profiling wheel 210 rotates due to the contact with the mast 4;

[0047] Step 2: As the profiling wheel 210 rotates, the encoder 21 connected to the profiling wheel 210 through the coupling 211 also rotates synchronously and collects data. Then, the encoder 21 synchronously transmits this data to the conversion module, and the conversion module measures the specific position information of the power head 1 based on the data. This information can be used to assist the visualization function of the pressure platform of the operating system, helping the operator quickly and accurately locate the pressure platform.

[0048] On the other hand, the present invention also provides a rotary drilling rig, and the rotary drilling rig includes the above-mentioned power head position detection device 2.

[0049] In summary, compared with the prior art, the rotary drilling rig and its power head position detection device and position detection method of the present invention have the following advantages and positive effects:

[0050] (1) Through the contact rotation of the profiling wheel 210 and the mast 4, combined with the data collection function of the encoder 21, the present invention realizes the precise detection of the position of the power head 1, improves the detection efficiency, and reduces the maintenance difficulty. By setting components such as the frame 22, the spring 23, and the guide rod 24 in this device, it plays a good role in support, buffering, and guiding, ensuring the stability and reliability during the movement of the power head 1;

[0051] (2) In the present invention, the encoder 21 rotates synchronously with the rotation of the profiling wheel 210, can accurately collect the data of the rotation angle, and transmits this data to the conversion module in real time. The conversion module processes and analyzes this data according to the preset algorithm and model, thereby obtaining the specific position information of the power head 1. This process not only has high measurement accuracy but is also not affected by the construction environment, showing good reliability and practicability;

[0052] (3) The structure of the present invention is simple and convenient for disassembly and assembly. In practical applications, the detection device can be appropriately adjusted and optimized according to the specific model of the rotary drilling rig and the construction environment. For example, a suitable profiling wheel 210 and anti-slip belt 5 can be selected according to the shape and size of the mast 4, and parameters such as the thrust and stroke of the oil cylinder 3 can be adjusted synchronously, having good adaptability.

[0053] It should be noted that, in this article, unless otherwise clearly stipulated and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. In addition, in this article, "front", "rear", "left", "right", "up" and "down" are all referenced to the placement state shown in the drawings.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power head position detection device for a rotary drilling rig, the power head position detection device is arranged between the power head and the mast and is hinged to the power head, and is characterized in that, The power head position detection device includes an oil cylinder, a frame, a spring connected to the frame, a guide rod connected to the spring, a profiling wheel hinged to the frame, and an encoder disposed on one side of the frame, where: The oil cylinder is connected between the mast and the power head, an anti-slip belt is provided on one side of the mast, and the profiling wheel abuts against the anti-slip belt; The frame includes a sleeve, a connecting plate connected to the outer periphery of the sleeve, a bending plate, a transition plate disposed between the connecting plate and the bending plate, a mounting shaft disposed on the transition plate, two corresponding ear plates disposed on the bending plate, and a support plate disposed outside the ear plates; The profiling wheel is hinged between the two ear plates through a first hinge shaft, the encoder is fixed to the outside of the support plate through a fastener, the encoder is connected to the first hinge shaft through a coupling, and the encoder is connected with a conversion module; The guide rod includes a fixed section, a threaded section, and a shoulder disposed between the fixed section and the threaded section. One end of the spring is sleeved on the outer periphery of the mounting shaft, and the other end is sleeved on the outer periphery of the threaded section. The fixed section and the sleeve are both hinged to the top of the power head.

2. The power head position detection device for a rotary drilling rig according to claim 1, wherein Two corresponding mounting plates are provided at the top of the power head. The second hinge shaft is disposed between the two mounting plates and sleeved in the sleeve, and the sleeve is hinged to the mounting plate through the second hinge shaft.

3. The power head position detection device for a rotary drilling rig according to claim 1, wherein A mounting seat is provided at the top of the power head, and the fixed section is hinged to the mounting seat through the third hinge shaft.

4. The position detection device for the power head of a rotary drilling rig according to claim 1, characterized in that, A first through hole is formed in the ear plate, the first hinge shaft is disposed in the first through hole, and a bearing is disposed between the first hinge shaft and the first through hole.

5. The power head position detection device for a rotary drilling rig according to claim 1, characterized in that, A second through hole is formed in the support plate, the output shaft of the encoder is disposed in the second through hole, and the output shaft is connected to the coupling.

6. The power head position detection device for a rotary drilling rig according to claim 1, characterized in that, The oil cylinder includes a cylinder barrel fixed to the upper part of one side of the mast and a push rod sleeved in the cylinder barrel. The free end of the push rod is connected to the top of the power head.

7. The position detection device for the power head of a rotary drilling rig according to claim 1, characterized in that, An adjusting nut is disposed between the spring and the shoulder, and the adjusting nut is threadedly connected to the outer periphery of the threaded section.

8. The position detection device for the power head of a rotary drilling rig according to claim 1, characterized in that, An anti-slip ring is sleeved on the outer periphery of the profiling wheel.

9. A method for detecting the position of a power head of a rotary drilling rig, the power head position detection method is implemented by using the power head position detection device according to any one of claims 1 to 8, and includes: Step 1: By controlling the telescopic oil cylinder to expand and contract, and then controlling the power head to move up and down along the mast. During the up and down movement of the power head, the profiling wheel rotates due to contact with the mast; Step 2: As the profiling wheel rotates, the encoder connected to the profiling wheel through the coupling also rotates synchronously and collects data. Then, the encoder synchronously transmits these data to the conversion module, and the conversion module measures the specific position information of the power head according to the data.

10. A rotary drilling rig, characterized in that, The rotary drilling rig includes the power head position detection device according to any one of claims 1-8.

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