Intelligent joint cutting drilling machine with multidirectional adjusting mechanism

Abstract

The invention discloses an intelligent joint-cutting drilling machine with a multidirectional adjusting mechanism, relates to the technical field of mining drilling machine equipment, and aims to solve the problem of poor hole-forming and joint-cutting quality caused by radial run-out of a main shaft due to thermal deformation and vibration of a cutting end. A thermal deformation prediction mechanism is mainly applied to the mining drilling machine, and active rotation compensation adjustment of a main shaft in the radial direction is carried out based on temperature change data and main shaft deformation data, so that the problem of radial run-out of the main shaft caused by thermal deformation and vibration of a cutting end is solved; due to the auxiliary design of the reinforcing structure of the compensation points shaped like the Chinese character'mi ', the firm correction effect can be effectively and evenly provided, and the follow-up drilling and joint cutting precision is prevented from being affected; according to the drilling and joint-cutting machine, the drilling and joint-cutting actions with different radiuses can be realized within a set range, and angle deflection can be performed on the basis, so that the position of the drilling tool assembly at the tail end is driven to be adjusted to meet the construction requirements in a coal seam roof or a rock stratum in a roadway, and accurate drilling and joint-cutting actions are performed.

Description

Technical Field

[0001] This invention relates to the field of coal mine drilling equipment technology, specifically to an intelligent slotting drill with a multi-directional adjustment mechanism. Background Technology

[0002] Slotting drills are mainly used in coal mines and concrete pavements. Their core principle is to achieve slotting operations by power-driven diamond saw blades or hydraulic devices. In the 110 method of coal mining, slotting construction machinery is used to precisely drill pre-splitting holes / slits in the coal seam roof or rock strata, enabling directional roof collapse and pillarless mining. The key to the roof-cutting, pressure-relieving, and goaf-retaining roadway technology lies in pre-splitting blasting technology, which requires the construction of a large number of blasting holes. Therefore, the drilling quality directly affects the construction progress and slotting quality of the pre-splitting blasting technology, and consequently, the coal mining progress.

[0003] In the implementation process of pre-splitting blasting technology, after determining geological assessment conditions such as coal seam thickness, roof rock strength, and fracture development, the blasting location is determined through borehole sampling and pressure monitoring. After blasting location, a pre-splitting line is formed, and slit cutting is carried out along this line. However, due to different geological assessment conditions, changes in the slit direction and slit inclination angle cause changes in the form and position of the drill bit spindle. During the changes, the spindle is prone to radial runout due to thermal deformation and vibration at the cutting end, thus affecting the hole formation and slit cutting quality. To address this, this application proposes a solution: a thermal deformation prediction mechanism, based on temperature change data and spindle deformation data, to perform multi-directional adjustment compensation, thereby improving drilling accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent slotting drill with a multi-directional adjustment mechanism to solve the problems mentioned above.

[0005] The objective of this invention can be achieved through the following technical solution: an intelligent slotting drill with a multi-directional adjustment mechanism, comprising a drill assembly for performing drilling or slotting actions, the drill assembly comprising a drill rod and a drill bit, wherein a deformation compensation assembly for radial runout correction is mounted on the outside of the drill rod, the deformation compensation assembly comprising one or more pairs of compensation collars disposed outside the drill rod, and an electric sleeve and a piezoelectric ceramic column embedded in the compensation collars, wherein a push block is connected to the radial expansion and contraction end of the piezoelectric ceramic column, and the piezoelectric ceramic column compensates for the radial runout of the drill rod by contacting the drill assembly through the push block after radial expansion and contraction.

[0006] Further configuration includes: a vehicle body, a carriage panel, and a multi-directional rotation mechanism mounted on the carriage panel for repositioning the drill assembly.

[0007] Further configured as follows: the multi-directional rotation mechanism includes a horizontal rotating disk, a rotating column, a longitudinal deflection column, a telescopic frame, and a translation frame. The rotating column is disposed on the horizontal rotating disk, and the rotating column and the longitudinal deflection column are rotatably connected and have a cylinder mounted on their bottoms.

[0008] The configuration is further defined as follows: the plurality of energizing sleeves on each pair of compensation collars are staggered, and the inner end of the push block is arranged in an arc shape in the vertical direction, the arc shape being in contact with the outer surface of the drill rod.

[0009] A further configuration is provided: a connecting rod is installed between two adjacent compensation collars, and a bushing for axial positioning of the drill pipe is installed on the top compensation collar.

[0010] The shaft sleeve is further configured such that a shaft limiting ring is installed inside the shaft sleeve, and fixed circular rings connected to the shaft sleeve are installed at both the upper and lower ends of the shaft limiting ring. The drill rod is rotatably connected to the shaft limiting ring.

[0011] The configuration is further defined as follows: a hydraulic cylinder is embedded in the longitudinal deflection column, the hydraulic cylinder is connected to the telescopic frame, and a translation block is installed at the front end of the telescopic frame.

[0012] The further configuration is as follows: the translation frame is sleeved outside the translation block and a guide column is installed on the front side, and a sliding seat for vertical movement of the drill assembly is slidably sleeved on the outside of the guide column.

[0013] The further configuration is as follows: a motor is installed on the upper front side of the sliding seat, and the output end of the motor is connected to the drill rod and controls the rotation of the drill rod to perform drilling or slitting actions.

[0014] The further configuration is as follows: a second motor is installed inside the translation block, and the output end of the second motor is connected to the guide column and controls the drill assembly to perform vertical turning action.

[0015] The present invention has the following beneficial effects:

[0016] 1. This invention addresses the problem of poor hole and kerf quality caused by radial runout of the spindle due to thermal deformation and cutting end vibration. By applying a thermal deformation prediction mechanism to mining drilling rigs, active radial rotation compensation adjustment of the spindle is performed based on temperature change data and spindle deformation data. This eliminates the radial runout problem caused by thermal deformation and cutting end vibration. Furthermore, the auxiliary design of the "rice"-shaped "compensation point" reinforcement structure effectively and uniformly provides a reliable correction effect, preventing any impact on the accuracy of subsequent drilling and kerf cutting.

[0017] 2. Furthermore, it can achieve drilling and slitting actions of different radii within a set range, and can also deflect the angle based on the above, thereby driving the adjustment of the position of the end drill assembly to meet the construction needs of the coal seam roof or rock strata in the roadway, and to carry out precise drilling and slitting actions. Attached Figure Description

[0018] 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 these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a bottom view of the structure of the present invention;

[0021] Figure 3 This is an installation structure diagram of the drill assembly of the present invention;

[0022] Figure 4 This is a structural diagram of the deformation compensation component of the present invention;

[0023] Figure 5 This is a top view of the deformation compensation component of the present invention;

[0024] Figure 6 This is a top sectional view of the deformation compensation component of the present invention;

[0025] Figure 7 This is a side sectional view of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged view of point A in the image.

[0027] In the diagram: 1. Vehicle body; 2. Cargo box; 3. Horizontal rotating disk; 4. Rotating column; 5. Longitudinal deflection column; 6. Telescopic frame; 7. Translation frame; 8. Guide column; 9. Guide rod; 10. Sliding seat; 11. Motor 1; 12. Bushing; 13. Compensating collar; 14. Connecting rod; 15. Drill rod; 16. Drill bit; 17. Cylinder; 18. Guide hole; 19. Applying sleeve; 20. Piezoelectric ceramic column; 21. Push block; 22. Translation block; 23. Motor 2; 24. Hydraulic cylinder; 25. Shaft limiting ring; 26. Fixed circle ring. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all 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.

[0029] Example 1

[0030] To address the problem of poor hole and kerf quality caused by radial runout of the spindle due to thermal deformation and vibration at the cutting end, the following technical solution is proposed:

[0031] Reference Figure 1 - Figure 8 As shown, the intelligent slotting drill with a multi-directional adjustment mechanism in this embodiment includes a drill assembly for performing drilling or slotting operations. The drill assembly includes a drill rod 15 and a drill bit 16. A deformation compensation assembly for radial runout correction is installed outside the drill rod 15. The deformation compensation assembly includes one or more pairs of compensation collars 13 disposed outside the drill rod 15, as well as an electric sleeve 19 and a piezoelectric ceramic column 20 embedded in the compensation collars 13. The radial expansion and contraction end of the piezoelectric ceramic column 20 is connected to a push block 21. After radial expansion and contraction, the piezoelectric ceramic column 20 contacts the drill assembly through the push block 21 to compensate for the radial runout of the drill rod 15.

[0032] When the drilling rig is drilling or cutting, it uses multi-directional adjustment to achieve multi-position switching and combines the spindle compensation mechanism to achieve precise drilling and cutting. Specifically, the piezoelectric ceramic column 20 has a unique electric expansion and contraction mechanism to quickly correct the radial runout problem that occurs during the high-speed rotation of the spindle, thereby preventing the drilling or cutting from failing to meet the requirements.

[0033] The multiple electric sleeves 19 on each pair of compensation collars 13 are staggered, and the inner end of the push block 21 is set in an arc shape in the vertical direction. The arc shape fits against the outer surface of the drill rod 15. A connecting rod 14 is installed between two adjacent compensation collars 13. The purpose of the staggered arrangement is to ensure that the piezoelectric ceramic columns 20 in the compensation collars 13 are evenly distributed and cross-correspond to the outside of the drill rod 15. When the drill rod 15 undergoes thermal deformation, the compensation adjustment in the corresponding direction is made according to the specific situation of thermal deformation, thereby reducing the probability of radial runout of the drill rod 15 and further ensuring accurate construction during drilling and cutting operations.

[0034] Reference Figure 7 and Figure 8As shown, a bushing 12 for axial limiting of drill rod 15 is installed on the compensation collar 13 at the top. An axial limiting ring 25 is installed inside the bushing 12. Fixed circle rings 26 connected to the bushing 12 are installed at both the upper and lower ends of the axial limiting ring 25. Drill rod 15 is rotatably connected to the axial limiting ring 25. The addition of the structure of the axial limiting ring 25 and fixed circle ring 26 in the bushing 12 completes the absolute axial limiting of drill rod 15 during operation, thereby avoiding axial deformation of the main shaft.

[0035] The compensation collar 13 is embedded with a ring of uniformly distributed temperature sensors and contact sensors, both of which are communicatively connected to a controller. The temperature sensors are used to monitor the temperature data and deformation of the drill rod 15 in real time. During the operation of the drilling rig, the temperature sensors acquire the initial temperature data and the current temperature data and calculate the temperature difference. They also classify and compare the various temperature differences on the same horizontal plane and obtain the maximum value. The part of the drill rod 15 corresponding to the location of the temperature sensor with the maximum value undergoes thermal deformation (measured by the contact sensor). That is, the drill rod 15 at this location experiences radial runout during the operation of the drilling rig. An electrical signal is then sent to the energized sleeve 19, which is 180° away from this location. The energized sleeve 19 is energized, causing the piezoelectric ceramic column 20 to expand, thereby compensating for the radial runout of the drill rod 15 in the reverse direction.

[0036] The basic operating principle of this invention is as follows: by applying the thermal deformation prediction mechanism to mining drilling rigs, the main shaft is actively rotated and adjusted radially based on temperature change data and main shaft deformation data, thereby eliminating the radial runout problem caused by thermal deformation and cutting end vibration of the main shaft. Furthermore, the auxiliary design of the "rice" shaped "compensation point" reinforcement structure can effectively and uniformly provide a reliable correction effect, preventing it from affecting the accuracy of subsequent drilling and cutting.

[0037] Example 2

[0038] Regarding how to achieve the multi-directional rotation mechanism of a slotting drill, this embodiment provides the following technical solution;

[0039] Reference Figures 1-3 and Figure 7 As shown, the vehicle includes a car body 1, a car body 2, and a multi-directional rotating mechanism for repositioning the drill assembly mounted on the car body 2. The multi-directional rotating mechanism includes a horizontal rotating disk 3, a rotating column 4, a longitudinal deflecting column 5, a telescopic frame 6, and a translation frame 7. The rotating column 4 is mounted on the horizontal rotating disk 3. The rotating column 4 and the longitudinal deflecting column 5 are rotatably connected and have a cylinder 17 mounted at their bottom. The car body 1 is a mine car with tracked wheels for movement, which can perform forward, backward, and turning actions in the roadway.

[0040] The multi-directional rotation mechanism is partially achieved by the horizontal rotating disk 3, the rotating column 4, the telescopic frame 6, and the translation frame 7. The horizontal rotating disk 3 drives the entire drill assembly to rotate horizontally through the rotating column 4, while the telescopic frame 6 drives the drill assembly to telescopic in the horizontal direction. The combination of the two enables drilling and cutting of different radii within a set range.

[0041] Reference Figure 7 As shown, a hydraulic cylinder 24 is embedded in the longitudinal deflection column 5. The hydraulic cylinder 24 is connected to the telescopic frame 6. A translation block 22 is installed at the front end of the telescopic frame 6. The translation frame 7 is sleeved outside the translation block 22 and a guide column 8 is installed on the front side. A sliding seat 10 for vertical movement of the drill assembly is slidably sleeved on the outside of the guide column 8. A second motor 23 is installed inside the translation block 22. The output end of the second motor 23 is connected to the guide column 8 and controls the drill assembly to perform vertical turning action.

[0042] The complete action includes: the translation block 22 moves in the translation frame 7 to drive the guide column 8 to make horizontal displacement, and the motor 23 in the translation block 22 can drive the guide column 8 to make angular deflection. Along with the horizontal displacement, it can also realize rotation in the vertical plane, and finally achieve a multi-directional adjustment mechanism, thereby realizing intelligent adjustment function in the pre-splitting blasting technology construction process.

[0043] This drilling rig can not only perform drilling and slitting operations of different radii within a set range, but also deflect angles based on the above, thereby driving the drill bit 16 in the end tool assembly to meet the construction needs of the coal seam roof or rock strata in the roadway, and perform precise drilling and slitting operations.

[0044] A motor 11 is installed on the upper front side of the sliding seat 10. The output end of the motor 11 is connected to the drill rod 15 and controls the rotation of the drill rod 15 to perform drilling or cutting actions. The motor 11 controls the drill rod 15 and the drill bit 16 to perform drilling and cutting actions.

[0045] Example 3

[0046] Reference Figures 1-8 As shown, this embodiment combines the technical content of Embodiment 1 and Embodiment 2, and the construction method applied to pre-splitting blasting technology includes the following steps:

[0047] Step 1: Construction of blasting holes. The entire drilling rig is moved to the corresponding position, and motor 11 is started to control the drill rod 15 and drill bit 16 to perform drilling or cutting operations.

[0048] Step 2: Multi-directional adjustment action. The horizontal rotating disk 3 drives the entire drill assembly to rotate horizontally through the rotating column 4, while the telescopic frame 6 drives the drill assembly to telescopic in the horizontal direction. Then, the translation block 22 moves in the translation frame 7 to drive the guide column 8 to perform horizontal lateral displacement. Furthermore, the motor 23 in the translation block 22 can drive the guide column 8 to deflect at an angle. Along with the horizontal lateral displacement, it can also achieve rotation in the vertical plane, which together constitutes the multi-directional adjustment of the drill, so that the drill bit 16 is in the position to be constructed.

[0049] Step 3: Spindle deformation compensation. The unique electric expansion and contraction of the piezoelectric ceramic column 20 quickly corrects the radial runout problem that occurs during the high-speed rotation of the spindle. When the drill rod 15 undergoes thermal deformation, compensation adjustment is made in the corresponding direction according to the specific situation of thermal deformation, reducing the probability of radial runout of the drill rod 15 and ensuring accurate construction during drilling and slitting operations.

[0050] In summary, this invention primarily applies a thermal deformation prediction mechanism to mining drilling rigs. Based on temperature change data and spindle deformation data, it performs active radial rotation compensation adjustment of the spindle, thereby eliminating radial runout caused by thermal deformation and vibration at the cutting end. Furthermore, the auxiliary design of the "rice"-shaped "compensation point" reinforcement structure effectively and uniformly provides a reliable correction effect, preventing any impact on subsequent drilling and slitting accuracy. It can also achieve drilling and slitting actions of different radii within a set range, and can also perform angular deflection based on the above, thereby adjusting the position of the drill bit assembly at the end to meet the construction needs of the coal seam roof or rock strata in the roadway, enabling precise drilling and slitting operations.

[0051] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. An intelligent slotting drill with a multi-directional adjustment mechanism, comprising a drill assembly for performing drilling or slotting actions, the drill assembly including a drill rod (15) and a drill bit (16), wherein a deformation compensation component for radial runout correction is externally mounted on the drill rod (15), characterized in that, The deformation compensation assembly includes one or more pairs of compensation collars (13) disposed outside the drill pipe (15), an electric sleeve (19) and a piezoelectric ceramic column (20) embedded in the compensation collars (13). The radial expansion and contraction end of the piezoelectric ceramic column (20) is connected to a push block (21). After radial expansion and contraction, the piezoelectric ceramic column (20) contacts the drill assembly through the push block (21) to compensate for the radial runout of the drill pipe (15).

2. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 1, characterized in that, It also includes a vehicle body (1), a carriage panel (2), and a multi-directional rotating mechanism mounted on the carriage panel (2) for repositioning the drill assembly.

3. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 2, characterized in that, The multi-directional rotation mechanism includes a horizontal rotating disk (3), a rotating column (4), a longitudinal deflection column (5), a telescopic frame (6), and a translation frame (7). The rotating column (4) is mounted on the horizontal rotating disk (3). The rotating column (4) and the longitudinal deflection column (5) are rotatably connected and have a cylinder (17) mounted at their bottoms.

4. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 1, characterized in that, The plurality of power-applying sleeves (19) on each pair of compensation collars (13) are staggered, and the inner end of the push block (21) is arranged in an arc shape in the vertical direction, the arc shape being in contact with the outer surface of the drill rod (15).

5. The intelligent slit drilling rig with a multi-directional adjustment mechanism according to claim 4, characterized in that, A connecting rod (14) is installed between two adjacent compensation collars (13), and a bushing (12) for axial positioning of the drill pipe (15) is installed on the top compensation collar (13).

6. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 5, characterized in that, The bushing (12) is fitted with a shaft limiting ring (25), and both the upper and lower ends of the shaft limiting ring (25) are fitted with fixed circle rings (26) connected to the bushing (12). The drill rod (15) is rotatably connected to the shaft limiting ring (25).

7. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 3, characterized in that, The longitudinal deflection column (5) is embedded with a hydraulic cylinder (24), which is connected to the telescopic frame (6). The front end of the telescopic frame (6) is equipped with a translation block (22).

8. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 7, characterized in that, The translation frame (7) is sleeved outside the translation block (22) and a guide column (8) is installed on the front side. The guide column (8) is slidably sleeved with a sliding seat (10) for vertical movement of the drill assembly.

9. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 8, characterized in that, A motor (11) is installed on the upper front side of the sliding seat (10). The output end of the motor (11) is connected to the drill rod (15) and controls the drill rod (15) to rotate to perform drilling or cutting operations.

10. The intelligent slotting drill with a multi-directional adjustment mechanism according to claim 7, characterized in that, The translation block (22) is equipped with a second motor (23), the output end of which is connected to the guide column (8) and controls the drill assembly to perform vertical turning action.

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