Mast sag adjustment device for small rotary drilling rigs

Abstract

This utility model discloses a mast vertical adjustment device for a small rotary drilling rig, comprising a level bubble monitoring unit installed on the drill rod of the rotary drilling rig; a visual recognition unit for capturing level bubble images; and an image processing system and data processing unit for real-time image analysis and calculation of drill rod verticality deviation. The calculated deviation data can be output through a display unit for manual reference and correction, or transmitted to an automatic adjustment execution unit for real-time automatic correction of the drill rod posture. This utility model aims to solve the technical problems of low efficiency, insufficient accuracy, and inability to monitor in real time using traditional monitoring methods. Through automated monitoring and real-time feedback adjustment, this system can significantly improve the accuracy and efficiency of drilling construction, avoiding the scrapping of pile foundations and economic losses caused by discovering quality problems only after drilling is completed.

Description

Technical Field

[0001] This utility model belongs to the field of building construction and bridge construction, and in particular relates to a mast vertical adjustment device for a small rotary drilling rig. Background Technology

[0002] Pile foundations are a primary foundation type in modern building and bridge structures, and drilling operations are mostly carried out using rotary drilling rigs. During the construction of bored piles, precise control of verticality is crucial for ensuring project quality and efficiency, and it is also a decisive factor in evaluating the quality of the borehole.

[0003] Existing methods for monitoring verticality typically rely on a combination of mast tilt monitoring and manual monitoring with a total station. This approach requires manual operation of the total station during drilling to check the verticality of the drill rod, making real-time monitoring impossible and resulting in low efficiency. Furthermore, measurements of hole quality, depth, and verticality are often only taken after drilling is complete. If verticality is found to be non-compliant with engineering specifications, the pile foundation must be abandoned, causing significant economic losses and slowing down overall construction efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a mast vertical adjustment device for a small rotary drilling rig, in order to solve the technical problems of existing rotary drilling rig verticality monitoring methods, such as the inability to monitor in real time, low efficiency, insufficient accuracy, and the fact that problems can only be discovered after drilling, leading to economic losses and project delays.

[0005] To achieve the above objectives, this utility model provides a mast sag adjustment device for a small rotary drilling rig, the structure of which includes:

[0006] A leveling bubble monitoring unit is installed on the drill rod of a rotary drilling rig;

[0007] A visual recognition unit, installed on a rotary drilling rig, clearly and continuously captures images from the level bubble monitoring unit;

[0008] An image processing system electrically connected to the visual recognition unit, wherein the image processing system analyzes the images captured by the visual recognition unit in real time;

[0009] The data processing unit receives data from the image processing system, uses image processing algorithms to identify and locate the center position of the level bubble, and calculates the actual verticality deviation angle of the drill rod.

[0010] The display unit is located in the cab of the rotary drilling rig and is electrically connected to the data processing unit. The display unit displays the monitored verticality deviation data in real time.

[0011] In one embodiment, an automatic adjustment execution unit is further included, which is electrically connected to the data processing unit and connected to the control system of the rotary drilling rig.

[0012] In one embodiment, the visual recognition unit includes at least one high-definition camera.

[0013] In one embodiment, a plurality of leveling bubble monitoring units are included, each of which is arranged at a different height position on the drill pipe.

[0014] In one embodiment, the leveling bubble monitoring unit includes a circular leveling bubble or a tubular leveling bubble.

[0015] In one embodiment, the leveling bubble monitoring unit is mounted on the drill rod using bolts or a retaining ring.

[0016] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:

[0017] This utility model provides a mast verticality adjustment device for a small rotary drilling rig. By using visual recognition technology to capture and analyze the position of the level bubble in real time, it can continuously, automatically, and accurately monitor the verticality of the drill rod, overcoming the shortcomings of traditional methods that cannot monitor in real time. Furthermore, it achieves a shift from "passive detection" to "active monitoring," allowing operators or automated systems to quickly adjust based on real-time data, avoiding rework caused by verticality issues and significantly improving construction efficiency. In addition, because deviations can be detected and corrected promptly during drilling, it avoids situations where quality problems are discovered after hole formation, leading to the scrapping of pile foundations and effectively reducing economic losses. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the mast vertical adjustment device for a small rotary drilling rig provided in an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the monitoring system and drill pipe provided in the embodiments of this utility model;

[0021] Figure 3 This is a partial schematic diagram of a level bubble provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the leveling bubble monitoring unit provided in this embodiment of the utility model;

[0023] Figure 5 A flowchart of the visual recognition unit processing provided in this embodiment of the utility model;

[0024] Figure 6 A flowchart of the image processing system provided in this embodiment of the present utility model.

[0025] The labels for the various figures are as follows:

[0026] 1. Drill rod; 2. Level bubble unit; 3. Vision recognition unit; 4. Image processing system; 5. Data processing unit; 6. Automatic adjustment execution unit; 7. Bolt; 8. Fixing ring; 9. Drill hole; 10. Drill bit; 11. Display unit. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Please see Figures 1 to 6 This application provides a mast vertical adjustment device for a small rotary drilling rig, comprising a level bubble monitoring unit, a vision recognition unit 3, an image processing system 4, a data processing unit 5, and a display unit 11. The level bubble monitoring unit is installed on the drill rod 1 of the rotary drilling rig; the vision recognition unit 3 is installed on the rotary drilling rig and clearly and continuously captures images from the level bubble monitoring unit; the image processing system 4 is electrically connected to the vision recognition unit 3 and analyzes the images captured by the vision recognition unit 3 in real time; the data processing unit 5 receives data from the image processing system 4, uses image processing algorithms to identify and locate the center position of the level bubble, and calculates the actual vertical deviation angle of the drill rod 1; the display unit 11 is located in the cab of the rotary drilling rig and is electrically connected to the data processing unit 5, displaying the monitored vertical deviation data in real time.

[0032] In one embodiment, the system further includes an automatic adjustment execution unit 6, which is electrically connected to the data processing unit 5 and connected to the control system of the rotary drilling rig. The adjustment execution unit can be a hydraulic system, an electric motor, or other suitable drive device.

[0033] In one embodiment, the visual recognition unit 3 includes at least one high-definition camera. The visual recognition unit 3 captures images of the real world using the high-definition camera or other image sensors. These images can be static (such as photographs) or dynamic (such as video streams).

[0034] In one embodiment, multiple leveling bubble monitoring units are included, each positioned at a different height on the drill rod 1. Each leveling bubble monitoring unit is equipped with an independent visual recognition unit 3. Images of each leveling bubble monitoring unit are captured by the visual recognition unit 3 at each location. After processing by the image processing system 4 and the data processing unit 5, the deviation angle of the drill rod 1 at each leveling bubble monitoring unit's height position can be obtained. Furthermore, the deviation angles returned from multiple monitoring systems are averaged to provide a more accurate verticality monitoring result.

[0035] In one embodiment, the level bubble monitoring unit includes a circular level bubble or a tubular level bubble. Alternatively, it may be other level bubbles with different shapes.

[0036] In one embodiment, the leveling bubble monitoring unit is mounted on the drill rod 1 using bolts 7 or retaining rings 8.

[0037] The implementation steps of the mast vertical adjustment device for the small rotary drilling rig in this embodiment are as follows:

[0038] Step 1: System Installation and Calibration

[0039] After the rotary drilling rig arrives on site and completes initial leveling, the monitoring system is installed. Depending on the drilling depth requirements, circular leveling bubble monitoring units are installed at one or more locations on the drill rod 1 (e.g., upper, middle, and lower) using bolts 7 or retaining rings 8. During installation, it must be ensured that the monitoring unit (2) remains perpendicular to the drill rod 1. Subsequently, at least one high-definition camera is installed as a visual recognition unit 3 at different angles of the rotary drilling rig to ensure it can clearly capture images of the leveling bubble. To ensure measurement accuracy, the visual recognition unit 3 needs to be calibrated to minimize geometric distortion, and lighting and automatic spray cleaning devices can be provided if necessary to address issues of light variations and mud contamination.

[0040] Step 2: Image Acquisition and Processing

[0041] After drilling begins (9), the vision recognition unit 3 continuously acquires images of the circular level bubble at a sufficiently high frequency and transmits the image data to the image processing system 4 in real time. The image processing system 4 preprocesses the received images, including noise reduction, contrast enhancement, and color correction, to improve image quality. Then, image segmentation technology is used to accurately separate the outline of the level bubble from the background image.

[0042] Step 3: Data Analysis and Deviation Calculation

[0043] Data processing unit 5 receives information from image processing system 4. This unit utilizes advanced algorithms such as Hough Transform or edge detection to accurately identify and locate the center position of the level bubble. For example... Figure 3 As shown, by comparing the offset between the bubble center and the level center, the tilt angle of the current drill rod 1 in the X and Y directions, i.e., the verticality deviation value, can be calculated. The calculation principle can be P=k•n, where P is the tilt angle, k is the graduation value of the circular level, and n is the scale number corresponding to the bubble offset.

[0044] Four steps: Deviation correction

[0045] The data processing unit 5 displays the calculated deviation value on the display unit 11 in real time. The operator can manually control the drilling rig based on the displayed data to correct the perpendicularity of the drill rod 1 and the drill bit 10. Alternatively, in a more advanced automation scheme, the signal from the data processing unit 5 is directly input to the automatic adjustment execution unit 6. This unit, through connection to the hydraulic or electrical control system of the drilling rig, automatically drives the corresponding components to adjust the attitude of the drill rod 1, achieving closed-loop control until the perpendicularity deviation is corrected.

[0046] Through the above steps, this utility model can monitor and adjust the verticality of the drill rod 1 in real time and accurately throughout the entire process of drilling 9 with a rotary drilling rig, thereby ensuring the quality of the hole and improving work efficiency.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mast sag adjustment device for a small rotary drilling rig, characterized in that, The mast sag adjustment device of the small rotary drilling rig includes: A leveling bubble monitoring unit is installed on the drill rod of a rotary drilling rig; A visual recognition unit, installed on a rotary drilling rig, clearly and continuously captures images from the level bubble monitoring unit; An image processing system electrically connected to the visual recognition unit, wherein the image processing system analyzes the images captured by the visual recognition unit in real time; The data processing unit receives data from the image processing system, uses image processing algorithms to identify and locate the center position of the level bubble, and calculates the actual verticality deviation angle of the drill rod. The display unit is located in the cab of the rotary drilling rig and is electrically connected to the data processing unit. The display unit displays the monitored verticality deviation data in real time.

2. The mast sag adjustment device for a small rotary drilling rig according to claim 1, characterized in that: It also includes an automatic adjustment execution unit, which is electrically connected to the data processing unit and connected to the control system of the rotary drilling rig.

3. The mast sag adjustment device for a small rotary drilling rig according to claim 1, characterized in that: The visual recognition unit includes at least one high-definition camera.

4. The mast sag adjustment device for a small rotary drilling rig according to claim 1, characterized in that: It includes multiple leveling bubble monitoring units, each of which is arranged at different height positions on the drill rod.

5. The mast sag adjustment device for a small rotary drilling rig according to claim 1, characterized in that: The leveling bubble monitoring unit includes a circular leveling bubble or a tubular leveling bubble.

6. The mast sag adjustment device for a small rotary drilling rig according to claim 1, characterized in that: The leveling bubble monitoring unit is installed on the drill rod using bolts or a retaining ring.

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