A drill pipe stable conveying device for a reverse circulation drilling machine

Abstract

The utility model discloses a kind of drill pipe steady conveying devices for reverse-well drilling machine, it is related to reverse-well drilling machine supporting equipment technical field.The drill pipe steady conveying device for reverse-well drilling machine, including frame column and guide assembly, four frame columns are in rectangular array, bottom is connected foundation through flange, top and side rear part are connected crossbeam respectively to form rigid frame, transmission bracket is equipped on upper crossbeam, servo motor is connected precise harmonic gear on it, harmonic gear is fixed through U type ear plate and is connected ball screw, ball screw is positioned by bearing seat at both ends, middle nut seat plate is connected drill pipe sleeve, frame column is equipped with L type support to install absolute grating ruler, laser displacement sensor is installed on lower support crossbeam, the drill pipe steady conveying device for reverse-well drilling machine, through rigid frame, accurate transmission and double detection, realize drill pipe stable lifting and accurate positioning, improve drilling quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of supporting equipment for raise boring machines, and in particular to a drill pipe stabilizing and conveying device for raise boring machines. Background Technology

[0002] Raise-the-well drilling rigs are specialized equipment used for drilling vertical and inclined shafts. Their core operation relies on the stable delivery and precise positioning of the drill rod. The drill rod needs to be raised and lowered smoothly in the vertical direction to control the drilling depth, while maintaining its own rotational stability to ensure drilling accuracy. With the increasing demands for construction efficiency and operational safety in mining, tunneling and other projects, the performance of the drill rod delivery device has become one of the key factors restricting the quality of raise-the-well drilling rig operations. The guidance and detection systems suffer from poor coordination and insufficient adaptability. Existing devices often use a single sliding guide sleeve as the guiding structure, which can only provide coarse constraint on the drill rod in one direction. Furthermore, the friction between the guide sleeve and the drill rod is sliding friction, and the coefficient of friction can reach over 0.3 when the drill rod is rotating. This can easily cause wear on the drill rod surface and generate significant resistance, affecting rotational stability. At the same time, the detection systems are often equipped with only a single position sensor, which can only monitor the height of the drill rod and cannot capture the radial offset of the drill rod in real time. Manual adjustment is often required only after the offset has accumulated to a significant degree, resulting in low work efficiency and difficulty in guaranteeing correction accuracy. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a drill pipe stabilization and delivery device for a raise boring machine that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a drill pipe stabilizing and conveying device for a raise boring machine, comprising four frame columns and a guide assembly, wherein the four frame columns are arranged in a rectangular array and a top crossbeam is fixedly connected to the top of the four frame columns; Upper support beams are fixedly connected to the middle of the left and right sides of the frame column, and lower support beams are fixedly connected to the bottom of the left and right sides of the frame column. The guide components are located in the middle and lower part of the frame columns; The guide assembly includes four guide wheel mounting seats and four radial guide wheels. The four guide wheel mounting seats are fixedly connected to the upper support beam and the lower support beam on both sides of the frame column, respectively. The radial guide wheels are rotatably connected to the guide wheel mounting seats.

[0005] Preferably, the bottom of each frame column is fixedly connected to a flange.

[0006] Preferably, the rear side of the frame column is fixedly connected with an upper crossbeam, a middle crossbeam and a lower crossbeam from top to bottom; A transmission bracket is fixedly connected to the upper crossbeam, a servo motor is fixedly connected to the top of the transmission bracket, and a precision harmonic gear is fixedly connected to the output end of the servo motor.

[0007] Preferably, a U-shaped lug is fixedly connected to the precision harmonic gear, and the U-shaped lug is fixedly connected to the bottom of the transmission bracket; A ball screw is fixedly connected to the bottom output end of the precision harmonic gear. An upper bearing seat is rotatably connected above the ball screw. A nut seat plate is rotatably connected to the middle of the ball screw. A lower bearing seat is rotatably connected to the bottom of the ball screw.

[0008] Preferably, the upper bearing seat is fixedly connected to the middle crossbeam, and the lower bearing seat is fixedly connected to the lower crossbeam; A drill rod sleeve is fixedly connected to the bottom of the nut seat plate, and a drill bit is installed at the bottom of the drill rod sleeve.

[0009] Preferably, an L-shaped aluminum bracket is fixedly connected to the left side of the front of the frame column, and an absolute grating ruler is fixedly connected to the L-shaped aluminum bracket.

[0010] Preferably, a laser displacement sensor is fixedly connected to the lower support beam, and the output end of the laser displacement sensor is positioned directly opposite the outer circular surface of the drill pipe sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The drill pipe stabilizing and conveying device used in this raise boring machine has four radial guide wheels that constrain the drill pipe sleeve. The built-in bearing structure reduces friction. The absolute grating ruler and laser displacement sensor form a dual detection closed loop, which can capture position and radial offset in real time and correct deviation in time, so as to keep the drill pipe stable under complex working conditions and reduce the failure rate of operation.

[0012] 2. The drill pipe stabilizing and conveying device used in this raise boring machine adopts a servo motor-precision harmonic gear-ball screw transmission link, combined with specific high-precision components, to eliminate transmission backlash, achieve high-precision control of drill pipe lifting speed, improve power transmission efficiency, reduce power loss and meet the requirements of high-precision operation.

[0013] 3. The drill pipe stabilizing and conveying device used in this raise boring machine adopts a four-frame column rectangular array and a multi-beam collaborative support structure. The bottom of the frame columns is rigidly fixed to the foundation through flanges to form a three-dimensional load-bearing system, so that the total load is evenly distributed. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a drill pipe stabilizing and conveying device for a raise boring machine according to the present invention; Figure 2This is a right-side top view schematic diagram of a drill pipe stabilizing and conveying device for a raise boring machine according to the present invention; Figure 3 This is a schematic diagram (left) of a drill pipe stabilizing and conveying device for a raise boring machine according to the present invention; Figure 4 This is a schematic diagram of a drill pipe stabilizing and conveying device for a raise boring machine according to the present invention.

[0015] Reference numerals: 1. Frame column; 2. Flange; 3. Top crossbeam; 4. Upper support crossbeam; 5. Lower support crossbeam; 6. Servo motor; 7. Transmission support; 8. Precision harmonic gear; 9. Ball screw; 10. Upper bearing seat; 11. Nut seat plate; 12. Lower bearing seat; 13. Upper crossbeam; 14. Middle crossbeam; 15. Lower crossbeam; 16. L-shaped aluminum bracket; 17. Absolute grating ruler; 18. Laser displacement sensor; 19. Guide wheel mounting seat; 20. Radial guide wheel; 21. Drill pipe sleeve; 22. Drill bit; 23. U-shaped ear plate. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0018] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Please see Figure 1-4This utility model provides a technical solution: a drill pipe stabilizing and conveying device for a raise boring machine, comprising four frame columns 1 and a guide assembly. The four frame columns 1 are arranged in a rectangular array. A top crossbeam 3 is fixedly connected to the top of the four frame columns 1. An upper support crossbeam 4 is fixedly connected to the middle of the left and right sides of the frame columns 1. A lower support crossbeam 5 is fixedly connected to the bottom of the left and right sides of the frame columns 1. The guide assembly is located in the middle and lower part of the frame columns 1. The guide assembly includes four guide wheel mounting seats 19 and four radial guide wheels 20. The four guide wheel mounting seats 19 are fixedly connected to the upper support beam 4 and the lower support beam 5 on both sides of the frame column 1, respectively. The radial guide wheels 20 are rotatably connected to the guide wheel mounting seats 19. Flanges 2 are fixedly connected to the bottom of each frame column 1. From top to bottom, upper crossbeam 13, middle crossbeam 14 and lower crossbeam 15 are fixedly connected to the rear side of frame column 1. A transmission bracket 7 is fixedly connected to the upper crossbeam 13. A servo motor 6 is fixedly connected to the top of the transmission bracket 7. The servo motor 6 is a Panasonic MSME5AZG1U, which provides the core power and receives commands from the control system to achieve precise adjustment of speed and direction. It provides a stable and controllable power source for drill pipe lifting and lowering and is the starting point of the entire power transmission chain. A precision harmonic gear 8 is fixedly connected to the output end of the servo motor 6. The precision harmonic gear 8 is a Harmonic Drive CSF-17-100-2UH, which receives the power output from the servo motor and converts high-speed rotational motion into low-speed, high-torque output. While amplifying the power, it eliminates transmission gaps and ensures no slippage during power transmission, laying the foundation for the precise conversion of subsequent motion. A U-shaped lug 23 is fixedly connected to the precision harmonic gear 8. The U-shaped lug 23 is fixedly connected to the bottom of the transmission bracket 7. A ball screw 9 is fixedly connected to the bottom output end of the precision harmonic gear 8. The ball screw 9 is model THKBK2520-2000L, which converts the rotational motion transmitted by the precision harmonic gear 8 into linear motion. The upper bearing seat 10 is rotatably connected to the top of the ball screw 9, the nut seat plate 11 is rotatably connected to the middle part, and the lower bearing seat 12 is rotatably connected to the bottom. The upper bearing seat 10 is fixedly connected to the middle crossbeam 14, the lower bearing seat 12 is fixedly connected to the lower crossbeam 15, and the bottom of the nut seat plate 11 is fixedly connected to the drill rod sleeve 21, and the bottom of the drill rod sleeve 21 is provided with a drill bit 22. An L-shaped aluminum bracket 16 is fixedly connected to the front left side of the frame column 1. An absolute grating ruler 17 is fixedly connected to the L-shaped aluminum bracket 16. The absolute grating ruler 17 is a Heidenhain LC493F-2048 model, which collects the absolute position data of the sleeve in real time, transmits the data to the control system, and compares it with the preset position. A laser displacement sensor 18 is fixedly connected to the lower support beam 5. The output end of the laser displacement sensor 18 is directly opposite the drill pipe sleeve 21. The laser displacement sensor 18 is a Keyence IL-1000 model. It detects the change in distance between the sleeve and the sensor in real time and calculates the radial offset of the sleeve.

[0021] Working principle: The four frame columns 1 are arranged in a rectangular array. The bottom is rigidly fixed to the concrete foundation through the flange 2, and the top is connected by the top crossbeam 3 to form a whole, forming a four-column-one-top foundation bearing structure, which can bear the total load of the drill rod, drill bit 22 and clamping components. The upper support crossbeam 4 and lower support crossbeam 5 on the left and right sides of the frame columns 1, and the upper crossbeam 13, middle crossbeam 14 and lower crossbeam 15 on the rear side further strengthen the rigidity of the frame, ensuring that the device does not have obvious deformation during power transmission and drill rod lifting. The upper crossbeam 13 provides fixed support for the transmission bracket 7. The middle crossbeam 14 and the lower crossbeam 15 fix the upper bearing seat 10 and the lower bearing seat 12 respectively, ensuring that the installation axis of the ball screw 9 coincides with the center line of the drill pipe conveying. The upper bracket crossbeam 4 and the lower bracket crossbeam 5 serve as fixed carriers for the guide wheel mounting seat 19, providing a stable installation reference for the radial guide wheel 20, and structurally ensuring the relative position accuracy of each functional component. The servo motor 6 can achieve precise adjustment of speed and direction according to the control system instructions, providing a basis for the control of drill pipe lifting speed; The precision harmonic gear 8 is fixed to the bottom of the transmission bracket 7 by the U-shaped ear plate 23, forming a stable installation support. Its core function is to convert the high-speed rotation of the servo motor 6 into low-speed high-torque output. Through a gear ratio of about 100:1, the output torque of the motor is amplified to meet the power requirements for drill pipe lifting. At the same time, its extremely small meshing clearance can ensure that the power transmission is free from slippage, laying the foundation for the precise conversion of subsequent motion. The upper end of the ball screw 9 is fixed to the middle cross beam 14 through the upper bearing seat 10, and the lower end is fixed to the lower cross beam 15 through the lower bearing seat 12. The positioning of both ends ensures that the screw axis is vertical and fixed, and it can only rotate around its own axis and cannot produce axial movement. Its upper end is rigidly connected to the bottom output end of the precision harmonic gear 8, and directly receives the rotational power after reduction and torque amplification. The nut seat plate 11 and the ball screw 9 are engaged by a threaded pair. When the screw rotates, the force of the thread teeth pushes the nut seat plate 11 to move linearly along the screw axis. When the screw rotates forward, the nut seat plate 11 descends, driving the drill pipe to feed downhole. When the screw rotates in reverse, the nut seat plate 11 rises, driving the drill pipe to lift, thus realizing the backlash-free conversion between rotary motion and linear motion. The bottom of the nut seat plate 11 is rigidly fixed to the drill rod sleeve 21. The drill rod sleeve 21 is used to clamp the drill rod inside and the bottom is connected to the drill bit 22. Finally, the nut seat plate 11-drill rod sleeve 21-drill rod-drill bit 22 are integrated and linked, and the linear motion is accurately transmitted to the working load. Four guide wheel mounting seats 19 are fixed to the upper support beam 4 and lower support beam 5 on both sides of the frame column 1, forming a double-group, left-right symmetrical layout. Each group of guide wheel mounting seats 19 is rotatably connected to a radial guide wheel 20. The four radial guide wheels 20 are distributed in a ring around the outer circumference of the drill pipe sleeve 21, maintaining a 0.2-0.3mm fit clearance with the outer circular surface of the drill pipe sleeve 21. When the drill pipe sleeve 21 moves up and down with the nut seat plate 11, the radial guide wheel 20 restricts its displacement in the horizontal direction by making contact with the outer circular surface of the sleeve. When the sleeve has a radial offset tendency due to power transmission deviation or uneven load, the radial guide wheel 20 on the corresponding side will generate a reverse constraint force to prevent the offset from expanding and ensure that the drill pipe sleeve 21 and the internal drill pipe always move along the vertical trajectory. The radial guide wheel 20 adopts a rotating structure with built-in bearings. When the drill pipe rotates internally due to drilling requirements, the radial guide wheel 20 only maintains its contact constraint with the sleeve and does not rotate with the drill pipe, thus avoiding interference resistance and achieving the dual requirements of internal rotation and external stable guidance of the drill pipe. The absolute grating ruler 17 and the laser displacement sensor 18 form a dual detection system to collect the drill rod lifting position and radial offset data in real time, provide feedback signals to the control system, realize closed-loop control of detection-adjustment-correction, and ensure delivery accuracy. The main body of the grating ruler is arranged along the entire length of the drill rod's lifting stroke. The reading head collects the absolute position data of the lifting components in real time at a sampling frequency of 1000Hz, with a resolution of 0.001mm, accurately reflecting the current height of the drill rod. After the data is transmitted to the control system, it is compared with the preset lifting target position. If there is a deviation, the control system immediately adjusts the speed and direction of the servo motor 6 and corrects the lifting position through the power transmission link to ensure the positioning error when the drill rod reaches the target height. The laser displacement sensor 18 is fixed on the lower support beam 5, and its laser output end is facing the lower outer circle of the drill pipe sleeve 21. Its core function is to detect the radial offset of the sleeve in real time. The sensor collects distance data between the sleeve and the laser emission point with a detection accuracy of ±0.01mm. When the sleeve deviates radially, the distance data will change, and the system calculates the deviation amplitude based on the amount of data change. If the offset exceeds the threshold of 0.3mm, the control system can correct it in two ways: first, by fine-tuning the output power of the servo motor 6 to balance the force on the lead screw; second, by correcting the guide wheel clearance through the auxiliary adjustment mechanism to ensure that the sleeve returns to the vertical trajectory and avoids the accumulation of offset leading to positioning errors.

[0022] Structural Description: Frame column 1: As the core load-bearing component of the device, the four frame columns 1 are distributed in a rectangular array. The bottom is fixed to the flange 2, the top is connected to the top crossbeam 3, and the left, right and rear sides are fixed to the corresponding crossbeams respectively, forming a three-dimensional rigid load-bearing system. This provides a stable installation foundation for all components of the device, and can evenly distribute the total load of the drill pipe and related components, avoiding excessive stress on a single column that could lead to deformation, and ensuring the structural stability of the device during power transmission and drill pipe lifting. Flange 2: Fixedly connected to the bottom of the frame column 1, used to achieve a rigid connection between the frame column 1 and the concrete foundation. Through the transition connection of flange 2, the contact area between the frame column 1 and the foundation can be effectively increased, and the load borne by the column can be smoothly transferred to the foundation. This prevents the device from shaking or displacing due to concentrated force during operation, and further enhances the overall installation stability of the device. Top beam 3: Fixedly connected to the top of the four frame columns 1, connecting the dispersed columns into a whole, making the frame columns 1 form a four-column-one-top foundation structure, eliminating the risk of independent stress on a single column, significantly improving the overall rigidity and deformation resistance of the frame, and providing a stable support carrier for the installation of the upper components of the device. Upper support beam 4: Fixedly connected to the middle of the left and right sides of the frame column 1, serving as the mounting carrier for the guide wheel mounting seat 19. It is positioned in the middle of the frame and can correspond vertically with the lower support beam 5 below, providing a symmetrical mounting reference for the radial guide wheel 20. This ensures that the guide wheel exerts a balanced constraint on the drill pipe sleeve 21, preventing biased force during drill pipe lifting and lowering. The lower support beam 5 is fixedly connected to the bottom of the left and right sides of the frame column 1, corresponding vertically to the upper support beam 4. It is used to install the guide wheel mounting seat 19 and the laser displacement sensor 18. The symmetrical layout, together with the upper support beam 4, forms a double radial constraint on the guide assembly, which improves the trajectory control effect on the drill sleeve 21. At the same time, it provides an installation position for the laser displacement sensor 18 close to the drill sleeve 21 to ensure the accuracy of displacement detection. Servo motor 6: Fixedly connected to the top of the transmission bracket 7, with its output end connected to the precision harmonic gear 8. As the core power source of the device, its installation position is higher than the transmission components, which facilitates the vertical transmission of power. At the same time, it can receive control system commands to accurately adjust the speed and direction, providing stable and controllable power for drill rod lifting and lowering, and ensuring that the drill rod lifting and lowering speed meets the operation requirements. Transmission bracket 7: It is fixedly connected to the upper crossbeam 13, with the servo motor 6 installed at the top and the precision harmonic gear 8 fixed at the bottom through the U-shaped ear plate 23. This bracket provides a coaxial mounting reference for the servo motor 6 and the precision harmonic gear 8, ensuring that the axes of the two are aligned during power transmission, avoiding eccentric loss during power transmission, and making the transmission components form an independent integrated unit, which is convenient for installation and maintenance. Precision harmonic gear 8: Connected to the output end of servo motor 6, with the bottom output end fixed to ball screw 9, and fixed to the bottom of transmission bracket 7 by U-shaped ear plate 23. It converts the high-speed rotation of servo motor 6 into low-speed, high-torque output. While amplifying the power to meet the drilling rod lifting requirements, it can eliminate transmission gaps, ensure that the power transmission is free from slippage, and provide a guarantee for the precise conversion of subsequent movements. Ball screw 9: The upper end is fixed to the precision harmonic gear 8, the upper part is connected to the middle cross beam 14 through the upper bearing seat 10, the middle part is engaged with the nut seat plate 11, and the bottom part is connected to the lower cross beam 15 through the lower bearing seat 12. As the core component for motion conversion, the bearing seats at both ends of the screw ensure that the axis is vertically fixed and can only rotate around itself. Through the threaded pair with the nut seat plate 11, the rotational motion is precisely converted into linear motion, so as to realize the smooth lifting and lowering of the drill rod. Upper bearing seat 10: It is fixedly connected to the middle cross beam 14 and rotatably connected to the upper part of the ball screw 9. Its function is to position and constrain the upper end of the ball screw 9, restrict the axial movement of the screw, and only allow the screw to rotate around its own axis, ensuring that the installation axis of the ball screw 9 coincides with the center line of the drill pipe conveying, and providing support for the stable rotation and precise motion conversion of the screw. Nut seat plate 11: It meshes with the middle of the ball screw 9 and is fixedly connected to the drill pipe sleeve 21 at the bottom. As an intermediate carrier for power transmission, it receives rotational power through meshing with the ball screw 9 and converts it into its own linear motion, thereby driving the drill pipe sleeve 21 and the internal drill pipe to rise and fall synchronously, realizing the transmission of power from the transmission system to the working load. Lower bearing seat 12: It is fixedly connected to the lower crossbeam 15 and rotatably connected to the bottom of the ball screw 9. It cooperates with the upper bearing seat 10 to position the lower end of the ball screw 9, forming a support structure with fixed ends. This further ensures the vertical stability of the screw axis, prevents the screw from shaking during rotation, and ensures the accuracy of motion conversion. Upper crossbeam 13: Fixedly connected to the upper part of the rear side of the frame column 1, used to install the transmission bracket 7. It is set at the upper part of the rear side of the frame, which can provide the transmission system with an installation point close to the center of the device, making the power transmission path shorter and more direct, while enhancing the structural rigidity of the rear side of the frame, and working with other crossbeams to improve the overall load-bearing capacity. Middle crossbeam 14: Fixedly connected to the middle of the rear side of the frame column 1, used to install the upper bearing seat 10. Its position matches the height of the upper end of the ball screw 9, providing a precise installation reference for the upper bearing seat 10, ensuring the axial positioning accuracy of the ball screw 9, and at the same time serving as the middle support of the rear side of the frame, further optimizing the stress distribution of the frame. Lower crossbeam 15: Fixedly connected to the lower part of the rear side of the frame column 1, used to install the lower bearing seat 12, corresponding to the middle crossbeam 14, providing a stable installation foundation for the lower bearing seat 12, and working with the upper bearing seat 10 to complete the positioning of the two ends of the ball screw 9, while strengthening the structural stability of the lower part of the frame and improving the load-bearing capacity of the device for the bottom load. L-shaped aluminum bracket 16: Fixedly connected to the left front of the frame column 1, used to install the absolute grating ruler 17. Its L-shaped structure can adapt to the side and front space of the frame column 1, so that the installation position of the absolute grating ruler 17 corresponds to the lifting trajectory of the drill pipe sleeve 21, ensuring that the grating ruler reading head can move synchronously with the drill pipe sleeve 21, and realize accurate acquisition of position data. Absolute grating ruler 17: Fixed on L-shaped aluminum bracket 16, the reading head is linked with the drill pipe sleeve 21 to collect the absolute position data of the drill pipe sleeve 21 in real time and transmit it to the control system for comparison with the preset position, providing a basis for the control system to adjust the servo motor 6, ensuring the positioning accuracy of drill pipe lifting and avoiding lifting position deviation; Laser displacement sensor 18: It is fixedly connected to the crossbeam 5 of the lower support, and its output end is directly facing the drill pipe sleeve 21. This allows the sensor to detect the radial displacement of the drill pipe sleeve 21 at close range, capture the sleeve's offset changes in real time, and feed the data back to the control system so that the system can take corrective measures in a timely manner to prevent the cumulative offset from causing the drill pipe conveying trajectory to deviate. Guide wheel mounting base 19: There are four in total, which are fixed on the upper support beam 4 and the lower support beam 5 respectively. They are used to install radial guide wheels 20. They are distributed along the outer periphery of the drill pipe sleeve 21 and can provide a ring-shaped constraint mounting base for the radial guide wheels 20, ensuring that the guide wheels are precisely fitted with the outer circular surface of the drill pipe sleeve 21. At the same time, they provide stable support for the guide wheels through their own structure. Radial guide wheel 20: Rotatably connected to the guide wheel mounting seat 19, it fits against the outer circular surface of the drill pipe sleeve 21. Its built-in bearing rotation structure restricts the radial displacement of the drill pipe sleeve 21 without interfering with the internal rotation of the drill pipe. It can ensure that the drill pipe rises and falls along the vertical trajectory and avoid interference resistance, thus achieving the dual effect of stable guidance and rotational adaptation. Drill pipe sleeve 21: It is fixedly connected to the bottom of the nut seat plate 11, and the drill bit 22 is set at the bottom. The inside is used to clamp the drill pipe and serves as the direct mounting carrier for the drill pipe. It can move up and down with the nut seat plate 11 by fixing it to the drill pipe, while providing a stable clamping for the drill pipe. This ensures that the drill pipe and the drill bit 22 form an integrated working unit and accurately transmit linear motion to the drilling end. Drill bit 22: Located at the bottom of drill pipe sleeve 21, it is linked with the drill pipe inside the drill pipe sleeve 21. As a direct drilling operation component, it realizes the drilling action through the rotation of the drill pipe and the raising and lowering of the sleeve. The stable movement of the drill pipe sleeve 21 can ensure the accuracy of the drilling trajectory of the drill bit 22 and improve the quality of drilling operation. U-shaped ear plate 23: It is fixedly connected to the precision harmonic gear 8 and also fixed to the bottom of the transmission bracket 7. Its U-shaped structure can adapt to the shape of the precision harmonic gear 8, and stably fix the harmonic gear on the transmission bracket 7, providing additional support and fixation for the harmonic gear, preventing it from shaking during power transmission, and ensuring the stability of power transmission.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A drill pipe stabilizing and conveying device for a raise boring machine, comprising four frame columns (1) and a guide assembly, characterized in that: The four frame columns (1) are arranged in a rectangular array, and the top of the four frame columns (1) is fixedly connected to the top beam (3). The upper support beam (4) is fixedly connected to the middle of the left and right sides of the frame column (1), and the lower support beam (5) is fixedly connected to the bottom of the left and right sides of the frame column (1). The guide components are set in the middle and lower part of the frame column (1); The guide assembly includes four guide wheel mounting seats (19) and four radial guide wheels (20). The four guide wheel mounting seats (19) are fixedly connected to the upper support beam (4) and the lower support beam (5) on both sides of the frame column (1), respectively. The radial guide wheels (20) are rotatably connected to the guide wheel mounting seats (19).

2. The drill pipe stabilizing and conveying device for a raise boring machine according to claim 1, characterized in that: The bottom of each frame column (1) is fixedly connected to a flange (2).

3. The drill pipe stabilizing and conveying device for a raise boring machine according to claim 1, characterized in that: The frame column (1) is fixedly connected from top to bottom to the upper crossbeam (13), the middle crossbeam (14) and the lower crossbeam (15) on the rear side. A transmission bracket (7) is fixedly connected to the upper crossbeam (13), a servo motor (6) is fixedly connected to the top of the transmission bracket (7), and a precision harmonic gear (8) is fixedly connected to the output end of the servo motor (6).

4. The drill pipe stabilizing and conveying device for a raise boring machine according to claim 3, characterized in that: The precision harmonic gear (8) is fixedly connected to a U-shaped lug (23), which is fixedly connected to the bottom of the transmission bracket (7); A ball screw (9) is fixedly connected to the bottom output end of the precision harmonic gear (8), an upper bearing seat (10) is rotatably connected above the ball screw (9), a nut seat plate (11) is rotatably connected in the middle of the ball screw (9), and a lower bearing seat (12) is rotatably connected to the bottom of the ball screw (9).

5. A drill pipe stabilizing and conveying device for a raise boring machine according to claim 4, characterized in that: The upper bearing seat (10) is fixedly connected to the middle crossbeam (14), and the lower bearing seat (12) is fixedly connected to the lower crossbeam (15); A drill rod sleeve (21) is fixedly connected to the bottom of the nut seat plate (11), and a drill bit (22) is provided at the bottom of the drill rod sleeve (21).

6. The drill pipe stabilizing and conveying device for a raise boring machine according to claim 1, characterized in that: An L-shaped aluminum bracket (16) is fixedly connected to the left front of the frame column (1), and an absolute grating ruler (17) is fixedly connected to the L-shaped aluminum bracket (16).

7. A drill pipe stabilizing and conveying device for a raise boring machine according to claim 2, characterized in that: A laser displacement sensor (18) is fixedly connected to the lower support beam (5), and the output end of the laser displacement sensor (18) is set directly opposite the outer surface of the drill pipe sleeve (21).

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