A drilling device for mining that can detect flaws in high-speed moving drill rods

Abstract

The present invention discloses a drilling device for mining that can detect flaws in high-speed moving drill rods. The device relates to the field of mining technology and includes a drilling unit mounted on a body, a flaw detection unit, a linear motion unit, a first reversing switch, a second reversing switch, and an industrial control computer. The drilling device utilizes a rotating ultrasonic flaw detection head to perform flaw detection on the high-speed rotating drill rod, enabling repeated reciprocating flaw detection of the exposed drill rod. This facilitates timely detection of cracks in the drill rod and avoids missed detections along the detection path.

Description

Technical Field

[0001] The invention relates to the technical field of mining, in particular to a drilling device used in mining and capable of detecting flaws in a high-speed moving drill rod. Background Art

[0002] Before mining operations begin, explosives are often used to break up the ore, making it easier to collect it. To improve the blasting effect, holes are typically drilled at the mining location before blasting, and then blasted inside. However, mines are often complex, and for mines where large drilling machines are inaccessible, small drilling devices are often used.

[0003] Existing drill rods are prone to metal fatigue and metal cracks after long-term use. The generation of metal cracks can easily lead to subsequent drill rod breakage. Sudden breakage of the drill rod can easily cause safety accidents. Generally, an ultrasonic flaw detection head is installed on the body of the drilling device (which is electrically connected to the display to display cracks) to detect the rotating drill bit, and a lifting device is used to drive the ultrasonic flaw detection head to move up and down slowly to achieve the flaw detection operation. This type of operation is only suitable for flaw detection when the drill rod is rotating at a low speed. It cannot be used to detect the flaws of the drill rod that is rotating at a high speed in the working state. The reason is that the scanning speed of the existing ultrasonic flaw detection head is generally the highest compared to the stationary flaw detection part. The speed is controlled at about 9m / min (because when the scanning speed of the ultrasonic flaw detection head is too fast, it is easy to cause missed detection on its moving detection path), and the high-speed rotating drill rod (the diameter of the drill rod is generally greater than 3cm) rotates hundreds of times per minute. Multiplying the number of revolutions per minute by the circumference of the drill rod can obtain that the movement length of a point on the drill rod per minute is much greater than 9m, which makes it impossible for the ultrasonic flaw detection head to perform flaw detection operations on the high-speed rotating drill rod during operation, and it is impossible to detect the existence of cracks in time and stop the operation of the drill rod to avoid unnecessary safety accidents. Therefore, the present application provides a mining drilling device that can perform flaw detection on high-speed moving drill rods to meet the needs. Summary of the Invention

[0004] The purpose of this application is to provide a drilling device for mining that can detect high-speed moving drill rods. This drilling device can use a rotating ultrasonic flaw detection head to perform flaw detection operations on high-speed rotating drill rods, and realize repeated back and forth flaw detection operations on exposed drill rods, which is beneficial for personnel to promptly discover cracks on the drill rods and avoid the occurrence of missed detections on their moving detection path.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a drilling device for mining that can detect flaws in high-speed moving drill rods, comprising a drilling unit mounted on a body, a flaw detection unit, a linear motion unit, a first reversing switch, a second reversing switch, and an industrial computer;

[0006] Flaw detection unit: can rotate at high speed around the periphery of the drill pipe and detect flaws on the drill pipe;

[0007] Linear motion unit: can drive the flaw detection unit to perform linear motion;

[0008] First reversing switch: when the first reversing switch is in contact with the machine body, it is used to control the linear motion unit to drive the flaw detection unit to move linearly upward;

[0009] Second reversing switch: when the second reversing switch is in contact with the drilling unit, it is used to control the linear motion unit to drive the flaw detection unit to move linearly downward;

[0010] Industrial computer: used to control various components to work in an orderly manner.

[0011] Preferably, the drilling unit includes a lifting screw rotatably arranged between a top plate and a bottom plate with movable casters, and the upper end of the lifting screw is connected to the output shaft of a lifting motor installed on the top plate, a lifting nut is threadedly sleeved on the lifting screw, and the lifting nut is fixedly embedded in a mounting plate on the upper end of which the drilling motor is fixed, the mounting plate is slidably connected to a plurality of limit columns circumferentially arranged between the top plate and the bottom plate through a plurality of lifting slide bars, the output shaft of the drilling motor is connected to the drill rod, and a through hole for the drill rod to pass through is opened at the center of the bottom plate;

[0012] The flaw detection unit includes a mounting ring that is sleeved on the outer periphery of the drill pipe and has a mounting cavity, and the inner cavity of the mounting ring is rotatably provided with a transmission gear and a gear ring that is meshed with the transmission gear. An ultrasonic flaw detection head is provided on the inner ring wall of the gear ring. The transmission gear is meshed with a drive gear that is fixedly provided on the output shaft of the rotating motor installed on the upper end of the mounting ring. A conductive slip ring is installed on the upper end of the mounting ring, and the rotating end and fixed end of the conductive slip ring are electrically connected to the ultrasonic flaw detection head and the industrial control machine respectively;

[0013] The linear motion unit includes a linear screw rotatably arranged between the top plate and the bottom plate, and a linear nut fixedly embedded in the mounting ring is provided on the linear screw thread sleeve, the upper end of the linear screw is fixedly connected to the output shaft of the linear motor installed on the upper end of the top plate, and a plurality of linear slides are provided on the outer wall of the mounting ring corresponding to the plurality of lifting slides, and the ends of the plurality of linear slides are respectively slidably arranged in the grooves provided on the corresponding limit columns;

[0014] The first reversing switch and the second reversing switch are respectively arranged at the upper and lower ends of one of the linear slide rods through a telescopic rod, a buffer spring is fixedly installed in the telescopic rod, and the upper and lower ends of the buffer spring are fixedly connected to the top and bottom of the inner cavity of the telescopic rod;

[0015] The drilling motor, the lifting motor, the rotating motor and the linear motor are all electrically connected to the industrial control computer.

[0016] Preferably, the upper and lower ends of the gear ring are circumferentially provided with a plurality of balls, and the plurality of balls located on the upper and lower sides of the mountain are respectively slidably arranged in annular grooves provided at the top and bottom of the inner cavity of the mounting ring.

[0017] Preferably, it also includes a first dust-proof unit, which includes a dust cover installed between the top plate and the bottom plate and a rotating shaft rotatably arranged at the bottom of the top plate, the dust cover is detachable and is provided with an air inlet with a filter, and first bevel gears are respectively installed at both ends of the rotating shaft, and the two first bevel gears are respectively meshed with the second bevel gear and the third bevel gear, the diameter of the second bevel gear is smaller than that of the third bevel gear, the second bevel gear and the third bevel gear are respectively fixedly mounted on the fan blade drive shaft and the lifting screw, and the fan blade drive shaft is rotatably arranged at the bottom of the top plate.

[0018] Preferably, it also includes a second dust-proof unit, which includes a plurality of atomizing nozzles and a plurality of water outlet pipes installed on the inner wall of the through-hole of the bottom plate and arranged in a circumferential manner, the atomizing nozzles and the water outlet pipes are arranged at intervals, and the atomizing nozzles and the water outlet pipes are both arranged obliquely downward, and the inner cavity of the bottom plate is provided with a water flow channel communicating with the atomizing nozzles and the water outlet pipes, and the water flow channel is communicated with the inner cavity of the water pipe installation provided on the outer wall of the bottom plate.

[0019] Preferably, the inner cavity of the base plate is provided with a first annular flow channel and a second annular flow channel which are communicated with the inner cavity of the installation water pipe, the first annular flow channel is communicated with the inner cavities of several water outlet pipes, and the second annular flow channel is communicated with the inner cavities of several atomizing nozzles.

[0020] Preferably, a plurality of ultrasonic flaw detection heads are provided, which can perform flaw detection operations on the drill rods at the same height at one time.

[0021] In summary, the technical effects and advantages of the present invention are as follows:

[0022] 1. The present invention has a reasonable structure. The drilling device can use a rotating ultrasonic flaw detection head to perform flaw detection on a high-speed rotating drill rod, and can realize repeated flaw detection operations on the exposed drill rod. This helps personnel to promptly discover cracks on the drill rod and avoids the occurrence of missed detections along its motion detection path.

[0023] 2. In the present invention, a plurality of ultrasonic flaw detection heads are provided for performing all-round flaw detection operations on drill rods at the same height at one time, thereby ensuring a more comprehensive and thorough flaw detection operation on the drill rods.

[0024] 3. The present invention also includes a first dustproof unit, which can prevent dust from entering the dust cover through the through hole when the drill rod is drilling, and avoid dust accumulation at the detection end of the ultrasonic flaw detection head or entering the interior of the ultrasonic flaw detection head to interfere with the flaw detection or cause a decrease in detection sensitivity.

[0025] 4. The present invention also includes a second dust prevention unit, which can quickly cool the drill rod, increase the humidity at the drill hole, and suppress dust. The atomizing nozzle is mainly used to reduce the dust raised.

[0026] 5. In the present invention, the first annular flow channel is communicated with the inner cavities of several water outlet pipes, and the second annular flow channel is communicated with the inner cavities of several atomizing nozzles, so as to avoid the atomizing nozzles and the water outlet pipes sharing the same flow channel, which may cause the water pressure in the atomizing nozzles to be too low and fail to form a good atomization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the partial split structure of the present invention;

[0030] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0031] Figure 4 For the present invention Figure 2 Schematic diagram of the split structure of the middle installation ring;

[0032] Figure 5 For the present invention Figure 4 A schematic structural diagram of the first embodiment of the middle gear ring;

[0033] Figure 6 For the present invention Figure 2 Schematic diagram of the local cross-section structure;

[0034] Figure 7 For the present invention Figure 4 Schematic diagram of the structure of the second embodiment of the middle gear ring.

[0035] Figure: 1. Base plate; 2. Industrial computer; 3. Drilling unit; 31. Lifting motor; 32. Lifting screw; 33. Drilling motor; 34. Lifting nut; 35. Mounting plate; 36. Limiting column; 37. Drill rod; 4. Linear motion unit; 41. Linear motor; 42. Linear nut; 43. Linear screw; 5. Flaw detection unit; 51. Mounting ring; 52. Transmission gear; 53. Gear ring; 54. Rotating motor; 55. Drive Gear; 56, conductive slip ring; 57, ultrasonic flaw detection head; 58, ball bearing; 59, annular slide; 510, linear slide; 6, top plate; 7, first reversing switch; 8, second reversing switch; 9, telescopic rod; 10, atomizing nozzle; 11, installation water pipe; 12, water outlet pipe; 13, third bevel gear; 14, rotating shaft; 15, first bevel gear; 16, second bevel gear; 17, fan blade drive shaft; 18, dust cover. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example: Reference Figure 1-4 The drilling device for mining that can detect flaws in high-speed moving drill rods shown in the figure includes a drilling unit 3 mounted on a body, a flaw detection unit 5, a linear motion unit 4, a first reversing switch 7, a second reversing switch 8, and an industrial computer 2;

[0038] Flaw detection unit 5: can rotate at high speed around the periphery of the drill rod 37 and detect flaws on the drill rod 37;

[0039] Linear motion unit 4: can drive the flaw detection unit 5 to perform linear motion;

[0040] First reversing switch 7: When the first reversing switch 7 contacts the machine body, it is used to control the linear motion unit 4 to drive the flaw detection unit 5 to move linearly upward;

[0041] Second reversing switch 8: When the second reversing switch 8 contacts the drilling unit 3, it is used to control the linear motion unit 4 to drive the flaw detection unit 5 to move linearly downward;

[0042] Industrial computer 2: used to control each component to work in an orderly manner.

[0043] As a preferred implementation in this embodiment, Figure 2 and Figure 3 As shown, the drilling unit 3 includes a lifting screw 32 rotatably arranged between the top plate 6 and the bottom plate 1 with movable casters, and the upper end of the lifting screw 32 is connected to the output shaft of the lifting motor 31 installed on the top plate 6, and a lifting nut 34 is threadedly sleeved on the lifting screw 32, and the lifting nut 34 is fixedly embedded in a mounting plate 35 on which the drilling motor 33 is fixed. The mounting plate 35 is slidably connected to a plurality of limit columns 36 circumferentially arranged between the top plate 6 and the bottom plate 1 through a plurality of lifting slide bars. The output shaft of the drilling motor 33 is connected to the drill rod 37, and a through hole for the drill rod 37 to pass through is opened at the center of the bottom plate 1. When drilling, the device can be moved to the drilling position point, and the drilling motor 33 and the lifting motor 31 are controlled to work, driving the drill rod 37 to rotate at high speed while using the lifting nut 34 to drive the drill rod 37 to move slowly downward, thereby realizing the drilling operation of the drill rod 37;

[0044] like Figure 2 、 Figure 4 and Figure 5As shown, the flaw detection unit 5 includes a mounting ring 51 that is sleeved on the outer periphery of the drill rod 37 and has a mounting cavity. The inner cavity of the mounting ring 51 is rotatably provided with a transmission gear 52 and a gear ring 53 that is meshed with the transmission gear 52. An ultrasonic flaw detection head 57 is provided on the inner ring wall of the gear ring 53. The transmission gear 52 is meshed with a drive gear 55 that is fixedly provided on the output shaft of a rotating motor 54 mounted on the upper end of the mounting ring 51. A conductive slip ring 56 is installed on the upper end of the mounting ring 51, and the rotating end and fixed end of the conductive slip ring 56 are electrically connected to the ultrasonic flaw detection head 57 and the industrial computer 2 respectively.The linear motion unit 4 includes a linear screw 43 rotatably arranged between the top plate 6 and the bottom plate 1, and a linear nut 42 is fixedly embedded in the mounting ring 51 on the threaded sleeve of the linear screw 43. The upper end of the linear screw 43 is fixedly connected to the output shaft of the linear motor 41 mounted on the upper end of the top plate 6. A plurality of linear slides 510 are arranged on the outer wall of the mounting ring 51 corresponding to the plurality of lifting slides, and the ends of the plurality of linear slides 510 are respectively slidably arranged in the grooves provided on the corresponding limit columns 36. The first reversing switch 7 and the second reversing switch 8 are respectively arranged at the upper and lower ends of one of the linear slides 510 through the telescopic rod 9. A buffer spring is fixedly installed in the telescopic rod 9, and the upper and lower ends of the buffer spring are aligned with the inner cavity of the telescopic rod 9. The top is fixedly connected to the bottom of the inner cavity, and the drilling motor 33, the lifting motor 31, the rotating motor 54 and the linear motor 41 are all electrically connected to the industrial computer 2. When drilling with the drilling unit 3, the linear motor 41 and the rotating motor 54 are controlled by the industrial computer 2 to work. The rotating motor 54 drives the gear ring 53 to rotate through the meshing connection between the gears, and the rotating gear ring 53 will drive the ultrasonic flaw detection head 57 to rotate at a high speed and the rotation direction is consistent with the rotation direction of the drill rod 37. Its rotation speed is less than the rotation speed of the drill rod 37. The movement displacement of the drill rod 37 and the ultrasonic flaw detection head 57 per minute is controlled by setting the speed parameters of the drilling motor 33 and the rotating motor 54 on the industrial computer 2. At the same time, the linear motor 41 drives the linear screw 43 to move, and drives the ultrasonic flaw detection head 57 to move downward through the linear nut 42. The movement speed V1 is greater than the downward movement speed V2 of the drill rod 37 driven by the lifting motor 31, and the high-speed rotating drill rod 37 can be inspected from top to bottom. When the first reversing switch 7 on the downward moving mounting ring 51 contacts the bottom plate 1, the industrial computer 2 will control the linear motor 41 to stop working and control the linear motor 41 to drive the linear screw 43 to rotate in the opposite direction, and the linear nut 42 drives the ultrasonic flaw detection head 57 to move upward at a speed of V3, V3=V1-V2. When the second reversing switch 8 set above contacts the bottom of the mounting plate 35, the industrial computer 2 will control the linear motor 41 to stop working and control the linear motor 41 to drive the linear screw 43 to rotate in the opposite direction. The linear motor 41 drives the linear screw 43 in forward rotation, and the linear nut 42 drives the ultrasonic flaw detection head 57 downward at a speed of V1. This repetitive motion allows the ultrasonic flaw detection head 57 to perform back-and-forth detection between the mounting plate 35 and the base plate 1, allowing flaw detection of exposed portions of the drill rod 37 being drilled. Detected cracks are displayed on the display of the industrial computer 2, facilitating timely detection of cracks in the drill rod 37 and preventing missed detections along the detection path. The downward and upward motion speeds of the ultrasonic flaw detection head 57 are V1 and V3, respectively, ensuring that the ultrasonic flaw detection head 57 covers the drill rod 37 at an equal distance per unit time, facilitating uniform flaw detection of the drill rod 37.

[0045] It should be noted that: 1. The detection end of the ultrasonic flaw detection head 57 is set close to the outer wall of the drill rod 37, which is conducive to improving the detection accuracy; 2. According to the formula λ=c / f, the higher the frequency, the shorter the wavelength. In order to detect the smallest defects as much as possible, a higher frequency ultrasonic wave should be selected. However, too high a frequency increases grain boundary reflection and places too high requirements on the detection surface, resulting in excessive grass-like clutter during early detection, making it difficult to distinguish between split ripples. After many experiments, it has been shown that the transmission frequency of the ultrasonic flaw detection head should be controlled within 2.5-4.5MHz. 3. During the inspection, it is necessary to ensure that the movement path length of the drill rod 37 and the ultrasonic flaw detection head 57 per minute is less than 9m to avoid missed detections; 4. V1, V2 and V3 are all set through the industrial computer 2.

[0046] As a preferred implementation in this embodiment, Figure 4 As shown, the upper and lower ends of the gear ring 53 are circumferentially provided with a plurality of balls 58, and the plurality of balls 58 located on the upper and lower sides of the mountain are respectively slidably provided in annular grooves 59 provided at the top and bottom of the inner cavity of the mounting ring 51. The balls 58 are used to make the gear ring 53 and the mounting ring 51 rotationally connected, so as to avoid the friction between the gear ring 53 and the mounting ring 51 under high-speed rotation and cause high temperature, so as to avoid the high temperature reducing the service life of the gear ring 53 and the mounting ring 51.

[0047] As a preferred implementation in this embodiment, Figure 6As shown, it also includes a first dustproof unit, which includes a dustproof cover 18 installed between the top plate 6 and the bottom plate 1 and a rotating shaft 14 rotatably set at the bottom of the top plate 6. The dustproof cover 18 is detachable and is provided with an air inlet with a filter screen. First bevel gears 15 are respectively installed at both ends of the rotating shaft 14, and the two first bevel gears 15 are respectively engaged with the second bevel gear 16 and the third bevel gear 13. The diameter of the second bevel gear 16 is smaller than that of the third bevel gear 13. The second bevel gear 16 and the third bevel gear 13 are respectively fixedly sleeved on the fan blade drive shaft 17 and the lifting screw 32. The fan blade drive shaft 17 is rotatably set at the bottom of the top plate 6. When the lifting screw 32 rotates, the third bevel gear 1 on it is rotated. The meshing connection with the first bevel gear 15 drives the rotating shaft 14 to rotate, and the rotating shaft 14 drives the second bevel gear 16 through the other first bevel gear 15 thereon to move rapidly (because the diameter of the second bevel gear 16 is smaller than that of the third bevel gear 13, the large gear can drive the small gear to rotate rapidly), causing the fan drive shaft 17 to rotate rapidly, allowing external air to enter the dust cover 18 through the air inlet with a filter and be discharged through the through hole provided at the axis of the base plate 1, forming a circulation. This can prevent dust from entering the dust cover 18 through the through hole when the drill rod is drilling, and prevent dust from accumulating at the detection end of the ultrasonic flaw detection head 57 or entering the ultrasonic flaw detection head 57, interfering with flaw detection or causing a decrease in detection sensitivity.

[0048] It should be noted that when the diameter of the first bevel gear 15 is less than the diameter of the second bevel gear 16 and less than the diameter of the third bevel gear 13, the rotation speed of the fan drive shaft 17 will be further accelerated, which can generate more wind force and further improve the dust prevention effect.

[0049] As a preferred implementation in this embodiment, Figure 2 As shown, it also includes a second dustproof unit, which includes a plurality of atomizing nozzles 10 and a plurality of water outlet pipes 12 installed on the inner wall of the through hole of the bottom plate 1 and arranged in a circumferential manner. The atomizing nozzles 10 and the water outlet pipes 12 are arranged at intervals, and the atomizing nozzles 10 and the water outlet pipes 12 are arranged obliquely downward. The inner cavity of the bottom plate 1 is provided with a water flow channel communicating with the atomizing nozzles 10 and the water outlet pipes 12, and the water flow channel is connected to the inner cavity of the installation water pipe 11 provided on the outer wall of the bottom plate 1. When drilling, the installation water pipe 11 can be connected to the external water source through the pump body. When drilling, the pump body is controlled to inject water into the water flow channel, and the water is sprayed out from the atomizing nozzle 10 and the water outlet pipe 12. The water outlet pipe 12 is mainly used to cool the drill rod 37. It has a good cooling effect and can quickly cool the drill rod 37. At the same time, it increases the humidity at the drilling site and suppresses dust. The atomizing nozzle 10 is mainly used to reduce the dust that is raised.

[0050] It is important to note that the spray area of ​​the atomizing nozzle 10 is set downward, which can effectively reduce dust while preventing water from being sprayed onto the ultrasonic flaw detection head 57 and the drill rod 37 to interfere with the flaw detection of the ultrasonic flaw detection head 57. At the same time, the downward airflow generated by the first dustproof unit can further prevent the mist from being sprayed into the dust cover 18 to interfere with the flaw detection.

[0051] In this embodiment, not shown in the figure, the inner cavity of the base plate 1 is provided with a first annular flow channel and a second annular flow channel which are communicated with the inner cavity of the installation water pipe 11. The first annular flow channel is communicated with the inner cavities of several water outlet pipes 12, and the second annular flow channel is communicated with the inner cavities of several atomizing nozzles 10. In order to ensure that there is sufficient water pressure to make the water temperature sprayed in the atomizing nozzle 10, two annular flow channels are designed. The water entering the installation water pipe 11 is divided into two parts, one part enters the first annular flow channel, and the other part enters the second annular flow channel, so as to avoid the atomizing nozzle 10 and the water outlet pipe 12 sharing the same flow channel, which causes the water pressure in the atomizing nozzle 10 to be too low and cannot form a good atomization effect.

[0052] As a preferred implementation in this embodiment, Figure 7 As shown, a plurality of ultrasonic flaw detection heads 57 are provided, which can perform all-round flaw detection operations on the drill rods 37 at the same height at one time, thereby ensuring a more comprehensive and thorough flaw detection operation on the drill rods 37 .

[0053] It is important to note that the plurality of ultrasonic flaw detection heads 57 are all electrically connected to the industrial computer 2 .

[0054] The working principle of the utility model is as follows: when drilling with the drilling unit 3, the linear motor 41 and the rotary motor 54 are controlled by the industrial computer 2 to work. The rotary motor 54 drives the gear ring 53 to rotate through the meshing connection between the gears, and the rotating gear ring 53 will drive the ultrasonic flaw detection head 57 to rotate at high speed and the rotation direction is consistent with the rotation direction of the drill rod 37. Its rotation speed is lower than the rotation speed of the drill rod 37. The speed parameters of the drilling motor 33 and the rotary motor 54 are set on the industrial computer 2 to control the movement displacement of the drill rod 37 and the ultrasonic flaw detection head 57 per minute. At the same time, the linear motor 41 is used to drive the linear screw 43 to move, and the linear nut 42 is used to drive the ultrasonic flaw detection head 57 to move downward. The movement speed V1 is greater than the downward movement speed V2 of the drill rod 37 driven by the lifting motor 31, so that the high-speed rotating drill rod 37 can be inspected from top to bottom. When the first reversing switch 7 on the downward moving mounting ring 51 contacts the base plate 1, the industrial computer 2 will control the linear motor 41 to stop working and control the linear screw 43 to move downward. The linear motor 41 drives the linear screw 43 to rotate in the opposite direction, and the linear nut 42 drives the ultrasonic flaw detection head 57 to move upward at a speed of V3, V3=V1-V2. When the second reversing switch 8 set above contacts the bottom of the mounting plate 35, the industrial computer 2 will control the linear motor 41 to stop working and control the linear motor 41 to drive the linear screw 43 to rotate forward, and the linear nut 42 drives the ultrasonic flaw detection head 57 to move downward at a speed of V1. This is repeated, so that the ultrasonic flaw detection head 57 can be moved between the mounting plate 35 and the bottom. The ultrasonic flaw detection head 57 moves back and forth between the plates 1 to detect the exposed parts of the drill rod 37 being drilled. The cracks detected are displayed on the display of the industrial computer 2, which is beneficial for personnel to find cracks on the drill rod in time and avoid missed detection on its motion detection path. The downward and upward movement speeds of the ultrasonic flaw detection head 57 are V1 and V3 respectively, which can ensure that the ultrasonic flaw detection head 57 moves the drill rod 37 at an equal distance per unit time, which is beneficial for uniform speed flaw detection of the drill rod 37.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drilling device for mining that can detect flaws in high-speed moving drill rods, comprising a drilling unit (3) mounted on a body, characterized in that: It also includes a flaw detection unit (5), a linear motion unit (4), a first reversing switch (7), a second reversing switch (8), and an industrial computer (2); A flaw detection unit (5) is capable of rotating at high speed around the periphery of the drill rod (37) and performing flaw detection on the drill rod (37); Linear motion unit (4): capable of driving the flaw detection unit (5) to perform linear motion; A first reversing switch (7): when the first reversing switch (7) is in contact with the machine body, it is used to control the linear motion unit (4) to drive the flaw detection unit (5) to move linearly upward; A second reversing switch (8): when the second reversing switch (8) is in contact with the drilling unit (3), it is used to control the linear motion unit (4) to drive the flaw detection unit (5) to move linearly downward; Industrial computer (2): used to control the orderly operation of various components; The drilling unit (3) includes a lifting screw (32) rotatably arranged between a top plate (6) and a bottom plate (1) with movable casters, and the upper end of the lifting screw (32) is connected to the output shaft of a lifting motor (31) installed on the top plate (6), a lifting nut (34) is threadedly sleeved on the lifting screw (32), and the lifting nut (34) is fixedly embedded in a mounting plate (35) on the upper end of which the drilling motor (33) is fixed, and the mounting plate (35) is slidably connected to a plurality of limit columns (36) circumferentially arranged between the top plate (6) and the bottom plate (1) through a plurality of lifting slide bars, the output shaft of the drilling motor (33) is connected to the drill rod (37), and a through hole for the drill rod (37) to pass through is opened at the center of the bottom plate (1); The flaw detection unit (5) includes a mounting ring (51) which is sleeved on the outer periphery of the drill rod (37) and has a mounting cavity, and the inner cavity of the mounting ring (51) is rotatably provided with a transmission gear (52) and a gear ring (53) meshingly connected with the transmission gear (52), an ultrasonic flaw detection head (57) is provided on the inner ring wall of the gear ring (53), the transmission gear (52) is meshingly connected with a driving gear (55) fixedly provided on the output shaft of a rotating motor (54) mounted on the upper end of the mounting ring (51), a conductive slip ring (56) is installed on the upper end of the mounting ring (51), and the rotating end and the fixed end of the conductive slip ring (56) are electrically connected to the ultrasonic flaw detection head (57) and the industrial control computer (2) respectively; The linear motion unit (4) includes a linear screw (43) rotatably arranged between the top plate (6) and the bottom plate (1), and a linear nut (42) fixedly embedded in the mounting ring (51) is threadedly sleeved on the linear screw (43), and the upper end of the linear screw (43) is fixedly connected to the output shaft of the linear motor (41) mounted on the upper end of the top plate (6), and a plurality of linear slides (510) are arranged on the outer wall of the mounting ring (51) corresponding to the plurality of lifting slides, and the ends of the plurality of linear slides (510) are respectively slidably arranged in the grooves provided on the corresponding limiting columns (36); The first reversing switch (7) and the second reversing switch (8) are respectively arranged at the upper and lower ends of one of the linear slide bars (510) through a telescopic rod (9); a buffer spring is fixedly installed in the telescopic rod (9), and the upper and lower ends of the buffer spring are fixedly connected to the top and bottom of the inner cavity of the telescopic rod (9); The drilling motor (33), the lifting motor (31), the rotating motor (54) and the linear motor (41) are all electrically connected to the industrial computer (2).

2. The drilling device for mining that can detect flaws in high-speed moving drill rods according to claim 1, characterized in that: The upper and lower ends of the gear ring (53) are both circumferentially provided with a plurality of balls (58), and the plurality of balls (58) located on the upper and lower sides of the gear ring are slidably provided in annular grooves (59) provided on the top and bottom of the inner cavity of the mounting ring (51).

3. The drilling device for mining that can detect flaws in high-speed moving drill rods according to claim 1, characterized in that: The utility model also includes a first dustproof unit, which includes a dustproof cover (18) installed between the top plate (6) and the bottom plate (1) and a rotating shaft (14) rotatably arranged at the bottom of the top plate (6). The dustproof cover (18) is detachable and is provided with an air inlet with a filter screen. First bevel gears (15) are respectively installed at both ends of the rotating shaft (14), and the two first bevel gears (15) are respectively engaged with the second bevel gear (16) and the third bevel gear (13). The diameter of the second bevel gear (16) is smaller than that of the third bevel gear (13). The second bevel gear (16) and the third bevel gear (13) are respectively fixedly sleeved on the fan blade drive shaft (17) and the lifting screw (32). The fan blade drive shaft (17) is rotatably arranged at the bottom of the top plate (6).

4. The drilling device for mining that can detect flaws in high-speed moving drill rods according to claim 1, characterized in that: The invention also includes a second dustproof unit, which includes a plurality of atomizing nozzles (10) and a plurality of water outlet pipes (12) installed on the inner wall of the through hole of the bottom plate (1) and arranged in a circumferential manner, wherein the atomizing nozzles (10) and the water outlet pipes (12) are arranged at intervals, and the atomizing nozzles (10) and the water outlet pipes (12) are both arranged obliquely downward, and the inner cavity of the bottom plate (1) is provided with a water flow channel communicating with the atomizing nozzles (10) and the water outlet pipes (12), and the water flow channel is communicated with the inner cavity of the installation water pipe (11) provided on the outer wall of the bottom plate (1).

5. The drilling device for mining that can detect flaws in high-speed moving drill rods according to claim 4, characterized in that: The inner cavity of the bottom plate (1) is provided with a first annular flow channel and a second annular flow channel which are in communication with the inner cavity of the installation water pipe (11); the first annular flow channel is in communication with the inner cavities of several water outlet pipes (12); and the second annular flow channel is in communication with the inner cavities of several atomizing nozzles (10).

6. The drilling device for mining that can detect flaws in high-speed moving drill rods according to claim 1, characterized in that: A plurality of ultrasonic flaw detection heads (57) are provided, and can perform all-round flaw detection operations on the drill rods (37) at the same height at one time.

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