Mining intelligent positioning rock drilling tool and using method thereof

Abstract

The invention relates to the field of drilling equipment, in particular to a mining intelligent positioning rock drill tool and a using method thereof.The mining intelligent positioning rock drill tool comprises a rock drill head, a bit shank sleeve and a drill rod, the bit shank sleeve is rotationally limited in the rock drill head, and a drill rod spline is arranged in the bit shank sleeve in a penetrating mode and penetrates out of the rock drill head in a sliding mode; a limiting piece used for guiding and positioning the drill rod is arranged between the rock drill head and the drill rod in a matched mode. By means of the abutting arc plates evenly distributed relative to the circumferential direction of the drill rod in the rock drill head, circumferential even multi-point extrusion force can be applied to the drill rod in the process that the drill rod is driven to rotate in the axial direction along the bit shank sleeve, and therefore multiple radial restraining effects on the drill rod are formed; radial shaking generated in the operation process of the drill rod is effectively buffered and absorbed, the drill rod and the bit shank sleeve are driven to always keep central axis correspondence, and the accurate positioning effect between the drill rod and the bit shank sleeve is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drilling equipment, in particular to a mine intelligent positioning rock drill and a use method thereof. BACKGROUND

[0002] The rock drill is a tool used for direct mining of stone, which drills blast holes on the rock layer to place explosives to blast the rock, thereby completing the mining of stone or other stone engineering. In addition, the rock drill can also be used as a breaker to break hard layers such as concrete. The positioning accuracy of the traditional rock drill in mining operation often depends on the experience of the operator, and lacks effective guiding and calibration mechanism, which leads to the difficulty in precise control of the position and angle of the blast hole during drilling, thereby affecting the subsequent blasting efficiency and the quality of ore mining, and increasing the operation risk due to positioning deviation.

[0003] With the progress of science and technology, the technical personnel in the related field have also optimized the technical means for positioning the rock drill. In order to make a more accurate comparison, a drill rod buffering positioning device of a hydraulic rock drill is disclosed in Chinese Patent No. CN220522565U, which includes a rock drill, a drill rod, a control valve, a connecting plate, an extension plate, a threaded rod, and a contact plate. When in use, the connecting plate, the threaded rod, the knob, the nut, and the contact plate provided in the device can guide and position the device during rock drilling, thereby reducing the positional deviation of the device during rock drilling.

[0004] However, when the above-mentioned existing technology is used for drilling operation, the following problems still exist: The device needs to drive the threaded rod to rotate to drive the contact plate to slide axially until the contact plate is tightly attached to the rock wall in the initial stage of rock drilling to guide and position the device, and then the spring and damping column between the upper plate and the lower plate buffer the shaking of the drill rod during drilling to guide and position the device during rock drilling, which reduces the positional deviation of the device during rock drilling. In actual use, since the hydraulic rock drill usually needs an internal impact piston to reciprocate and impact the drill tail, part of the energy will be bounced back by the rock, driving the drill rod to move in the opposite direction of impact, forming reverse sliding. In this process, the drill rod and drill bit are continuously or intermittently driven by the hydraulic motor to rotate. The intense friction and impact of the drill bit when it contacts with the hard rock and the centrifugal effect of its own rotation will further intensify the vibration of the drill rod as a whole, causing the drill rod to produce axial reciprocating sliding in the drill tail sleeve while accompanied by slight radial shaking. The drill rod cannot always maintain the designed central axis, resulting in positioning problems such as hole deviation and hole axis inclination during drilling. The device above can only be used to buffer the axial reaction force caused by impact, which is insufficient to overcome the radial shaking caused by the overall vibration trend of the drill rod, resulting in misalignment between the drill rod and the drill tail sleeve.

[0005] Therefore, in the above-mentioned view, there is still room for optimization in the existing technology for positioning the rock drill during drilling. SUMMARY

[0006] In order to solve the above problems, the present application provides a mine intelligent positioning rock drill, which comprises a rock drill head, a drill tail sleeve and a drill rod. The drill tail sleeve is rotationally limited in the rock drill head, the drill rod is spline-connected in the drill tail sleeve and slides out of the rock drill head, and a limiting piece for guiding and positioning the drill rod is arranged between the rock drill head and the drill rod. The limiting piece comprises: A rotating sleeve rotationally limited in the rock drill head and coaxially sleeved on the outer edge of the drill rod.

[0007] A plurality of abutting arc plates are slidably limited on the rotating sleeve and axially correspond to the drill rod. The plurality of abutting arc plates are uniformly distributed circumferentially on the rotating sleeve.

[0008] A driving end for driving the plurality of abutting arc plates to slide radially and abut on the drill rod.

[0009] Preferably, the driving end comprises a plurality of adjusting screws corresponding to the plurality of abutting arc plates, the plurality of adjusting screws are one-to-one connected with the abutting arc plates, and a rotating sleeve is threadedly sleeved on the adjusting screw and rotationally connected in the rock drill head.

[0010] Preferably, a driven gear is fixedly sleeved on the rotating sleeve, and a plurality of tooth rings are circumferentially arranged on the end of the rotating sleeve away from the drill tail sleeve and meshed with all the driven gears.

[0011] Preferably, the outer edge of the rotating sleeve is uniformly distributed with a plurality of tooth keys, the corresponding rotating sleeve and a plurality of tooth keys on the rock drill head are rotationally limited by a rotating gear, the rotating gear is engaged with the plurality of tooth keys, and the rotating gear is provided with a rotating shaft limiting the rotation of the rock drill head.

[0012] Preferably, the rotating shaft and the rotating gear are connected through an extension screw, and the extension screw is threadedly connected to the axis of the rotating gear and connected to the rotating shaft.

[0013] Preferably, the side of the pressing arc plate close to the drill rod is provided with a groove, and a sliding arc plate is slidably arranged in the groove, and the sliding arc plate is limited in the groove by a spring telescopic rod.

[0014] Preferably, the sliding arc plate is provided with a buffer block corresponding to the spring telescopic rod, and the end of the spring telescopic rod away from the sliding arc plate is connected to the buffer block.

[0015] Preferably, the buffer block extends on both sides of the spring telescopic rod connected to the drill rod in the axial direction.

[0016] In addition, the application also provides a use method of the intelligent positioning rock drill for mining, which comprises the following steps: S1: In the process of initially positioning and assembling the drill rod and the drill tail sleeve in the rock drill head, the driving end drives the plurality of pressing arc plates arranged on the rotating sleeve to guide the drill rod to keep the central axis aligned with the drill tail sleeve.

[0017] S2: In the drilling operation process, the driving end drives the plurality of pressing arc plates to exert radial constraint on the drill rod, so as to avoid the problem that the drill rod is easily deviated by the reaction force during the operation, and guide the drill rod to keep the central axis aligned with the drill tail sleeve at all times.

[0018] S3: The friction effect generated when the plurality of pressing arc plates arranged on the drill rod exert radial constraint on the drill rod is used to buffer the trend of the drill rod moving back by the reaction force of the rock stratum, and reduce the positional deviation of the drill rod during drilling.

[0019] In summary, the present application has at least one of the following beneficial technical effects: Firstly, the plurality of pressing arc plates arranged on the rock drill head and uniformly distributed in the circumferential direction of the drill rod can exert circumferential uniform multi-point extrusion force on the drill rod during the axial and rotational movement of the drill rod along the drill tail sleeve, thereby forming a plurality of radial constraint effects on the drill rod, effectively buffering and absorbing the radial shaking problem of the drill rod during the operation, and keeping the central axis of the drill rod aligned with the drill tail sleeve at all times, thereby achieving the precise positioning effect between the drill rod and the drill tail sleeve.

[0020] Secondly, the present application drives the spring telescopic rod to drive the sliding arc plate to keep the tendency of radial sliding of the drill rod when the drill rod impacts the rock stratum and is subjected to the reaction force wave to generate vibration, so that the sliding arc plate forms a continuous extrusion force on the drill rod, thereby increasing the dynamic friction force between the drill rod and the sliding arc plate. Part of the impact force when the drill rod axially slides will be transmitted to the sliding arc plate through the friction force, and the sliding arc plate and the spring telescopic rod will have a tendency to synchronously slide in the direction of the impact force. The elastic deformation of the spring telescopic rod will preliminarily buffer part of the impact energy and weaken the initial strength of the vibration. When the sliding arc plate and the spring telescopic rod slide with the drill rod, the buffer block will be extruded, and the buffer block will further absorb the remaining impact energy through its elastic deformation, thereby realizing secondary buffering of the impact energy and further reducing the vibration amplitude.

[0021] Thirdly, the present application drives the spring telescopic rod to drive the sliding arc plate to keep the tendency of radial sliding of the drill rod when the drill rod impacts the rock stratum and is subjected to the reaction force wave to generate vibration, so that the sliding arc plate forms a continuous extrusion force on the drill rod, thereby increasing the dynamic friction force between the drill rod and the sliding arc plate. Part of the impact force when the drill rod axially slides will be transmitted to the sliding arc plate through the friction force, and the sliding arc plate and the spring telescopic rod will have a tendency to synchronously slide in the direction of the impact force. The elastic deformation of the spring telescopic rod will preliminarily buffer part of the impact energy and weaken the initial strength of the vibration. When the sliding arc plate and the spring telescopic rod slide with the drill rod, the buffer block will be extruded, and the buffer block will further absorb the remaining impact energy through its elastic deformation, thereby realizing secondary buffering of the impact energy and further reducing the vibration amplitude. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in combination with the drawings and examples.

[0023] Figure 1 is a structural schematic diagram of the present application.

[0024] Figure 2 is a structural schematic diagram of the present application.

[0025] Figure 3 is a structural schematic diagram of the present application.

[0026] Figure 4 is a structural schematic diagram of the present application. Figure 3 is an enlarged view of A in the present application.

[0027] Figure 5 is a structural schematic diagram of the present application.

[0028] Figure 6 is an enlarged view of B in the present application. Figure 5

[0029] is a structural schematic diagram of the present application. Figure 7

[0030] Figure 8 ​is a structural schematic diagram of the extension screw of the present application.

[0031] In the figure, 1, rock drill head; 10, drill bit sleeve; 11, drill rod; 2, limiting piece; 20, rotating sleeve; 21, pressing arc plate; 22, driving end; 220, adjusting screw; 221, rotating sleeve; 222, driven gear; 223, gear ring; 224, gear key; 225, rotating gear; 226, rotating shaft; 23, extension screw; 24, sliding arc plate; 240, spring telescopic rod; 25, buffer block; 26, spline sleeve; 260, floating spring. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying Figure 1 to the accompanying Figure 8 The embodiments of the present application are described in detail.

[0033] The embodiments of the present application disclose a mine intelligent positioning rock drill and a method. The present application effectively buffers the radial shaking and axial movement problems of the drill rod in the drilling operation process through the cooperation of the several pressing arc plates arranged between the drill bit sleeve and the drill rod to guide and constrain the drill rod, and realizes the accurate positioning effect between the drill rod and the drill bit sleeve in the drilling process.

[0034] Embodiment one: refer to Figure 1 and Figure 2 A mine intelligent positioning rock drill, comprising a rock drill head 1, a drill bit sleeve 10 and a drill rod 11, the drill bit sleeve 10 is rotationally limited in the rock drill head 1, the drill rod 11 is spline-connected in the drill bit sleeve 10 and slides out of the rock drill head 1, and the rock drill head 1 and the drill rod 11 are matched with a limiting piece 2 for guiding and positioning the drill rod 11. In use, the limiting piece 2 guides and limits the section of the drill rod 11 in the rock drill head 1, reduces the vibration influence of the reaction force wave generated by the impact on the rock on the drill rod 11, and drives the drill rod 11 and the drill bit sleeve 10 to always keep the center axis aligned, thereby avoiding the positioning problems of hole position deviation and hole axis inclination.

[0035] It should be noted that the rock drill head 1 is a conventional mine hydraulic rock drill head 1, which is internally provided with a hydraulic impact piston to provide the impact force required for the overall drilling of the drill rod 11 and the front end drill bit, and is also internally provided with a hydraulic motor to drive the drill bit sleeve 10, the drill rod 11 and the drill bit to rotate while impacting. It is connected to the oil cavity for driving the impact piston stroke and return through the existing electric control unit assembly, and the opening size and reversing time of the servo valve are intelligently controlled through the electric signal output by the electric control unit. The output torque of the hydraulic motor is also intelligently controlled through the electric control signal. For example, when drilling a deep hole, the system increases the displacement to increase the torque to avoid motor overload; when drilling a shallow hole, the displacement is reduced to increase the speed. They are all conventional prior art means, and will not be described in detail here.

[0036] Referring to Figure 2 and Figure 3 , that is, the limiting piece 2 for guiding and positioning the drill rod 11; specifically, the limiting piece 2 comprises: The rotating limiting piece 20 is coaxially sleeved on the outer edge of the drill rod 11 in the rock drill head 1.

[0037] The plurality of sliding limiting arc plates 21 are arranged on the rotating sleeve 20 and axially correspond to the drill rod 11.

[0038] And the driving end 22 for driving the plurality of sliding limiting arc plates 21 to radially slide and abut against the drill rod 11.

[0039] In use, the plurality of sliding limiting arc plates 21 are synchronously driven to slide along the radial direction of the rotating sleeve 20 by the driving end 22, so that the plurality of sliding limiting arc plates 21 abut against the drill rod 11 on the side close to the middle part of the drill rod 11, forming a multi-point uniform clamping effect. When the drill rod 11 is axially fed or circumferentially rotated under the driving of the drill tail sleeve 10, the rotating sleeve 20 and the plurality of low-pressure rods remain relatively stationary with the rock drill head 1, and apply stable radial restraint forces to the drill rod 11 from different directions, further offsetting the radial shaking of the drill rod 11 during the impact process, and ensuring that the drill rod 11 always performs drilling operation along the set central axis trajectory, thereby improving the stability of the positioning accuracy.

[0040] Referring to Figures 3 to 6 , that is, the driving end 22 for driving the plurality of sliding limiting arc plates 21 to radially slide and abut against the drill rod 11; specifically, the driving end 22 comprises a plurality of adjusting screws 220 corresponding to the plurality of sliding limiting arc plates 21, the plurality of adjusting screws 220 are connected to the sliding limiting arc plates 21 one by one, a rotating sleeve 221 is threadedly sleeved on the adjusting screw 220 and rotatably arranged on the rock drill head 1, and the adjusting screw 220 is slidably arranged on the rock drill head 1, specifically, the adjusting screw 220 is provided with a limiting block on the rotating sleeve 20, the limiting block is slidably arranged on the rock drill head 1, and a plurality of sliding grooves are formed on the rock drill head 1 corresponding to the plurality of adjusting screws 220 and the limiting block. In use, the rotating sleeve 221 is driven to rotate, the adjusting screw 220 is axially slid along the rotating sleeve 221 through the thread cooperation between the rotating sleeve 221 and the adjusting screw 220 connected thereto, the limiting block is slid in the sliding groove synchronously driven by the adjusting screw 220, the adjusting screw 220 is slid to drive the sliding limiting arc plate 21 connected thereto to radially slide relative to the drill rod 11, so as to drive the sliding limiting arc plate 21 to abut against the drill rod 11.

[0041] Further, referring to Figures 4 to 6To ensure that the sliding steps of the adjusting screws 220 and the abutting arc plates 21 are consistent, a driven gear 222 is fixedly sleeved on the rotating sleeve 221, and a plurality of tooth rings 223 that are engaged with all the driven gears 222 are arranged on the end of the rotating sleeve 20 away from the drill bit sleeve 10. In use, the rotating sleeve 20 and the tooth rings 223 arranged thereon are driven to rotate, and through the engagement between the tooth rings 223 and the driven gears 222, all the driven gears 222 are synchronously driven to rotate, the driven gears 222 drive the rotating sleeve 221 to rotate, thereby driving all the adjusting screws 220 to synchronously slide and adjust, and further driving the corresponding abutting arc plates 21 to move towards or away from the middle drill rod 11 at the same step, so as to ensure that the radial constraint force received by the drill rod 11 in the circumferential direction is always uniformly distributed, further enhancing the stable support effect on the drill rod 11, and making the control of the central axis trajectory in the drilling process more accurate and reliable.

[0042] It should be noted that, in the rock drill, the drill rod 11 needs to slide axially relative to the drill bit sleeve 10 while being driven to rotate by the drill bit sleeve 10, so in the conventional arrangement, the drill rod 11 and the drill bit sleeve 10 are generally fixed in the circumferential direction and axially slidably connected through a spline structure, that is, the drill rod 11 is spline-connected in the drill bit sleeve 10. In this way, a gap is usually left between the drill bit sleeve 10 and the drill rod 11 to facilitate the insertion of the drill rod 11 into the drill bit sleeve 10, which may cause a certain radial swing of the drill rod 11 during the rotation of the drill rod 11 and the drill bit. This swing will gradually increase with the increase of the drilling depth and the extension of the drill rod 11, which not only affects the drilling efficiency and the accuracy of the hole forming, but also may exacerbate the wear between the drill rod 11 and the drill bit sleeve 10, reducing the service life of the machine.

[0043] Therefore, through the radial abutment of the plurality of abutting arc plates 21 arranged on the rotating sleeve 20, the radial constraint between the tail of the drill rod 11 and the drill bit sleeve 10 can be applied, and the radial displacement of the drill rod 11 during rotation can be effectively inhibited by self-centering and limiting the drill rod 11 inserted into the drill bit sleeve 10, so that the central axis of the drill rod 11 and the drill bit sleeve 10 can be kept in correspondence at all times, thereby improving the overall stability and reliability of the rock drilling operation.

[0044] Reference Figures 4 to 6As shown, in order to drive the rotating sleeve 20 to rotate, thereby driving several adjusting screws 220 and the pressure arc plate 21 to slide and radially constrain the drill rod 11, several teeth 224 are evenly distributed around the outer edge of the rotating sleeve 20. A rotating gear 225 is provided on the rock drill head 1 to limit the rotation of the rotating sleeve 20 and the teeth 224. The rotating gear 225 meshes with the teeth 224 to drive the rotating sleeve 20 to rotate around the drill rod 11. A rotating shaft 226 connected to the output shaft of the hydraulic motor is provided in the middle of the rotating gear 225. The rotating shaft 226 is rotatably mounted on the rock drill head 1.

[0045] In use, the hydraulic motor rotates to drive the drill tail sleeve 10 to rotate, and at the same time drives the rotating shaft 226 and the rotating gear 225 to rotate. The rotating gear 225 drives the rotating sleeve 20 to rotate, thereby driving all the rotating sleeves 221 and the driven gear 222 to rotate. This causes several adjusting screws 220 to slide and drive the connected pressure arc plate 21 to abut against the drill rod 11, forming a self-centering limit and radial constraint effect on the drill rod 11.

[0046] Furthermore, referring to Figure 7 and Figure 8 As shown, since the drill rod 11 also needs to slide axially along the drill tail sleeve 10 during rotation, in order to avoid the continuous rotation of the rotating sleeve 20 causing excessive sliding of several adjusting screws 220 and the pressure arc plate 21, resulting in excessive pressure force between the pressure arc plate 21 and the drill rod 11, causing the drill rod 11 to jam and affecting normal drilling, the rotating shaft 226 and the rotating gear 225 are connected by an extension screw 23. The extension screw 23 is threaded through the axis of the rotating gear 225 and connected to the limiting position of the rotating shaft 226.

[0047] In the initial stage, since several pressure arc plates 21 have not yet contacted the central drill rod 11, and the rotating gear 225 is engaged with several key teeth 224 on the rotating sleeve 20, and the rotation of the rotating sleeve 20 is limited on the rock drill head 1, that is, the rotating gear 225 is not circumferentially limited at the beginning. When the rotating shaft 226 and the extension screw 23 are driven to rotate, the threads on the extension screw 23 will generate circumferential friction and axial thrust, which will drive the rotating gear 225 to rotate first, driving the rotating sleeve 20 to rotate as a whole, thereby driving several adjusting screws 220 and pressure arc plates 21 to slide.

[0048] When the pressure plate 21 abuts against the middle drill rod 11, the adjusting screw 220 is limited and cannot move further down. The rotating sleeve 221, driven gear 222, and rotating sleeve 20 are subjected to the combined reaction force of the adjusting screw 220 and the pressure plate 21 abutting against the drill rod 11, which restricts the rotation of the rotating sleeve 20 and the rotating gear 225. At this time, the rotating shaft 226 and the extension screw 23 continue to be driven to rotate. Due to the rotation constraint of the rotating sleeve 20, the rotating gear 225 will slide along the meshing teeth 224 on the extension screw 23 and the rotating sleeve 20 through the thread until the rotating gear 225 disengages from the teeth 224 on the rotating sleeve 20. Then the rotating gear 225 will no longer slide along the rotating shaft 226, but will only rotate with the rotating shaft 226.

[0049] When the rotating gear 225 is completely disengaged from the key 224, its circumferential limit is released. At this time, the rotation of the rotating shaft 226 is mainly transmitted through the extension screw 23 to drive the rotating shaft 226, the extension screw 23 and the rotating gear 225 to rotate synchronously. The rotating sleeve 20, the adjusting screw 220 and the pressing arc plate 21 remain relatively stationary while holding the drill rod 11, which avoids the problem of abnormal clamping force caused by excessive slippage of the adjusting screw 220 and the pressing arc plate 21. This ensures the stable clamping constraint of the drill rod 11 during the drilling process and effectively prevents jamming.

[0050] Reference Figure 7 As shown, the pressure arc plate 21 has a groove on the side near the drill rod 11, and a sliding arc plate 24 is slidably fitted in the groove. The sliding arc plate 24 is limited to the groove by the spring telescopic rod 240.

[0051] Furthermore, referring to Figure 7 As shown, to avoid the influence of the axial reaction force wave of the rock strata on the positioning of the drill rod 11 during the impact process, a buffer block 25 is fixedly limited on the sliding arc plate 24 corresponding to the spring telescopic rod 240. The end of the spring telescopic rod 240 away from the connected sliding arc plate 24 is connected to the buffer block 25. The buffer block 25 extends on both sides of the buffer block 25 connected to the drill rod 11 axially. The buffer block 25 is preferably made of elastic material such as rubber. Initially, the sliding arc plate 24 protrudes radially from the pressing arc plate 21. That is, during the sliding process of the connecting pressing arc plate 21 and the sliding arc plate 24 approaching the middle of the drill rod 11, the sliding arc plate 24 will contact the drill rod 11 before the pressing arc plate 21.

[0052] When the adjusting screw 220 is driven to slide, the adjusting screw 220 drives the connected pressure arc plate 21, buffer block 25, spring telescopic rod 240, and sliding arc plate 24 to slide closer to the drill rod 11. After the sliding arc plate 24 contacts the drill rod 11, as the adjusting screw 220 continues to slide, the spring telescopic rod 240 is compressed. At the same time, the sliding arc plate 24 slides relative to the pressure arc plate 21, so that the pressure arc plate 21 gradually slides to be flush with the sliding arc plate 24 and together they abut against the drill rod 11. When the drill rod 11 is impacted by the rock layer and a reaction force wave is generated, because the spring telescopic rod 240 is compressed, it will always have a restoring elasticity, which drives the connected sliding arc plate 24 to continue to slide radially towards the drill rod 11. This drives the sliding arc plate 24 to form a squeezing force at the drill rod 11 and increase the sliding force. The friction between the sliding plate 24 and the surface of the drill rod 11 causes a portion of the impact force to be applied to the sliding plate 24 in the form of friction during the axial sliding of the drill rod 11. This friction also tends to drive the sliding plate 24 and the spring telescopic rod 240 to slide synchronously with the axial impact force direction of the drill rod 11, thereby compressing the buffer block 25 at the spring telescopic rod 240. The elastic deformation of the buffer block 25 buffers and absorbs the impact force wave. The elastic restoring characteristic of the spring telescopic rod 240 enhances the dynamic friction between the sliding plate 24 and the drill rod 11. Furthermore, the deformation of the buffer block 25 absorbs part of the axial impact energy, effectively reducing the vibration amplitude of the drill rod 11 during high-frequency impact operations, reducing overall fatigue damage to the equipment, and further improving the stability and safety of rock drilling operations.

[0053] As an optional implementation, the sliding arc plate 24 is provided with anti-slip texture on the side near the drill rod 11 to further improve the coefficient of friction when in contact with the drill rod 11. The sliding arc plate 24 is preferably made of a highly wear-resistant flexible material, so that the sliding arc plate 24 and the drill rod 11 maintain a good fit during contact, reducing wear caused by hard impact. It can also fill the small gap between the contact surface between itself and the drill rod 11 through its own micro-deformation, thereby maintaining a stable friction output and resistance at different impact frequencies.

[0054] Example 2: Refer to Figure 7 and Figure 8As shown, based on Embodiment 1, in order to further improve the positioning accuracy and stability of the drill rod 11 during drilling operations, the extension screw 23 is spaced apart from the rotating shaft 226, and a spline sleeve 26 is provided between the extension screw 23 and the rotating shaft 226 in a spline fit. Specifically, the section of the extension screw 23 near the rotating shaft 226 is set as a spline rod, the spline sleeve 26 is fixedly sleeved on the rotating shaft 226, and simultaneously slidably sleeved on the spline section of the extension screw 23. A floating spring 260 is provided between the opposite ends of the extension screw 23 and the rotating shaft 226, and the two ends of the floating spring 260 are respectively connected to the extension screw 23 and the rotating shaft 26 for limiting.

[0055] It should be noted that in this embodiment, when the adjusting screws 220 and the pressing arc plates 21 abut against the drill rod 11 to form a rotational constraint on the rotating gear 225, the thread between the extending screw 23 and the rotating gear 225 is configured to drive the rotating gear 225 to slide away from the drill tail sleeve 10. Furthermore, when the drill rod 11 is constrained by the pressing arc plates 21 and the sliding arc plates 24, the sliding arc plates 24 only need to be driven by the elastic clamping force of the spring telescopic rod 240 to protrude from the corresponding pressing arc plates 21. That is, during the normal constraint process, the pressing arc plates 21 are spaced apart from the drill rod 11.

[0056] In use, the hydraulic motor inside the rock drill head 1 drives the rotating shaft 226 to rotate. At the same time, the rotating shaft 226 also drives the extension screw 23 to rotate through the spline sleeve 26. After the rotating gear 225 slides along the extension screw 23 through the thread and disengages from the tooth key 224 on the rotating sleeve 20, the rotation of the rotating shaft 226 only drives the spline sleeve 26, the extension screw 23 and the rotating gear 225 to rotate synchronously. When the impact piston inside the rock drill head 1 impacts the drill rod 11, the drill rod 11 rotates along several pressure arc plates 21 and slides axially. After the impact hits the rock layer, the reaction force wave generated by the rock layer drives the drill rod 11 to slide in the opposite direction. Part of the reaction force wave acts on the sliding arc plate 24 that is elastically supported on its outer edge and is absorbed by the elastic deformation of the buffer block 25.

[0057] Another part acts on the extension screw 23 and the rotating gear 225, driving the extension screw 23 and the rotating gear 225 to slide along the spline sleeve 26 towards the direction of the drill bit sleeve 10, and driving the floating spring 260 to be compressed. The force compression deformation of the floating spring 260 absorbs and buffers part of the reaction wave. During the sliding process of the rotating gear 225 and the extension screw 23, the rotating gear 225 will be driven to move back and restore part of the meshing state with the corresponding tooth key 224 on the rotating sleeve 20. That is, the rotating gear 225 will move back and mesh with the tooth key 224 to drive the rotating sleeve 20 to continue to rotate. The rotation of the rotating sleeve 20 drives all the driven gears 222 to rotate and drives the adjusting screw 220 and the pressing arc plate 21 to further press against the drill bit 11, so that the friction effect between the sliding arc plate 24, the pressing arc plate 21 and the drill bit 11 increases, thereby limiting the tendency of part of the drill bit 11 to be driven back by the reaction force.

[0058] The return movement of the rotating gear 225 and the extension screw 23 will compress the floating spring 260. Driven by the elastic restoring force of the floating spring 260, the extension screw 23 and the rotating gear 225 will quickly slide away from the drill tail sleeve 10, causing the rotating gear 225 to quickly disengage from the rotating sleeve 20, thus avoiding affecting the subsequent impact piston's normal impact on the drill rod 11.

[0059] Example 3: Refer to Figure 7 As shown, based on Embodiment 1 and Embodiment 2, the extension screw 23 can be connected to the impact piston via a driven connecting rod (not shown in the figure), so that when the impact piston impacts the drill bit 11, it synchronously drives the extension screw 23 to move towards the rock layer. When the impact piston moves back, it also synchronously drives the extension screw 23 to move back, thereby driving the extension screw 23 and the rotating gear 225 to slide back and forth on the rock drill head 1 along with the impact piston. This drives the rotating gear 225 and the key 224 on the rotating sleeve 20 to be in a reciprocating state of meshing for a period of time and disengaging for a period of time. This causes the several pressing arc plates 21 and sliding arc plates 24 to elastically abut against the drill bit 11 when the impact piston impacts the drill bit 11, keeping it axially aligned with the drill tail sleeve 10. During the process of the impact piston moving back and the drill bit 11 moving back under the reaction force, the pressing arc plates 21 and sliding arc plates 24 are further driven to abut against the drill bit 11 to limit the tendency of the drill bit 11 to move back.

[0060] In addition, the present invention also provides a method for using a smart positioning rock drilling tool for mining, comprising the following steps: S1: During the initial positioning and assembly of the drill rod 11 and the drill tail sleeve 10 inside the rock drill head 1, the drive end 22 drives the rotating sleeve 20 to drive several pressure arc plates 21 arranged circumferentially to guide the drill rod 11 and the drill tail sleeve 10 to keep their central axes aligned.

[0061] S2: During the drilling operation, the driving end drives several pressure arc plates 21 to apply radial constraints relative to the drill rod 11, so as to avoid the problem that the drill rod 11 is easily driven to deviate by the reaction force during the operation, and at the same time guide the drill rod 11 to always keep the central axis aligned with the drill tail sleeve 10.

[0062] S3: The friction effect generated when the drill rod 11 is radially constrained by several circumferentially pressed arc plates against the drill rod 11 is used to buffer the tendency of the drill rod 11 to move back due to the reaction force wave of the rock layer, and reduce the positional displacement of the drill rod 11 during the drilling process.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mine intelligent positioning rock drilling machine tool, comprising a rock drilling machine head (1), a drill bit sleeve (10) and a drill rod (11), characterized in that: The rotation limiting sleeve (10) is rotationally limited in the rock drill head (1), the drill rod (11) is provided with a spline and is slidably arranged in the drill rod sleeve (10) and is slidably arranged out of the rock drill head (1), the rock drill head (1) and the drill rod (11) are provided with a limiting member (2) for guiding and positioning the drill rod (11), the limiting member (2) comprises: The rotation sleeve (20) is rotationally limited in the rock drill head (1) and is coaxially arranged on the outer edge of the drill rod (11); A plurality of abutting arc plates (21) are slidably arranged on the rotation sleeve (20) and are axially corresponding to the drill rod (11), the plurality of abutting arc plates (21) are uniformly distributed on the rotation sleeve (20) in the circumferential direction; And the driving end (22) drives the plurality of abutting arc plates (21) to slide radially and abut on the drill rod (11).

2. The intelligent positioning rock drilling machine according to claim 1, characterized in that: The driving end (22) comprises a plurality of adjusting screws (220) corresponding to the plurality of abutting arc plates (21), the plurality of adjusting screws (220) are connected with the abutting arc plates (21) one by one, and the adjusting screw (220) is provided with a rotation sleeve (221) which is rotationally arranged on the rock drill head (1).

3. A mine intelligent positioning rock drilling machine tool according to claim 2, characterized in that: The rotation sleeve (221) is fixedly provided with a driven gear (222), and the end of the rotation sleeve (20) away from the drill rod sleeve (10) is provided with a plurality of tooth rings (223) which are in meshing engagement with all the driven gears (222).

4. The intelligent positioning rock drilling machine according to claim 1, characterized in that: The outer edge of the rotation sleeve (20) is uniformly provided with a plurality of tooth keys (224), the rock drill head (1) is rotationally limited by a rotation gear (225) corresponding to the rotation sleeve (20) and the plurality of tooth keys (224), the rotation gear (225) is in meshing engagement with the plurality of tooth keys (224), and the rotation gear (225) is provided with a rotation shaft (226) which is rotationally limited in the rock drill head (1) and is located in the middle of the rotation gear (225).

5. A mine intelligent positioning rock drilling machine tool according to claim 4, characterized in that: The rotation shaft (226) and the rotation gear (225) are connected by an extension screw (23), and the extension screw (23) is threadedly arranged on the axis of the middle of the rotation gear (225) and is connected with the rotation shaft (226).

6. The intelligent positioning rock drilling machine according to claim 1, characterized in that: The side of the abutting arc plate (21) close to the drill rod (11) is provided with a groove, and the sliding arc plate (24) is slidably arranged in the groove, and the sliding arc plate (24) is limited in the groove by the spring telescopic rod (240).

7. A mine intelligent positioning rock drilling machine tool according to claim 6, characterized in that: The sliding arc plate (24) is provided with a buffer block (25) corresponding to the spring telescopic rod (240), and the end of the spring telescopic rod (240) away from the connected sliding arc plate (24) is connected with the buffer block (25).

8. A mine intelligent positioning rock drilling machine tool according to claim 7, characterized in that: The buffer block (25) extends on both sides of the spring telescopic rod (240) which is axially connected to the drill rod (11).

9. A method of using a mine intelligent positioning rock drilling machine tool, using a mine intelligent positioning rock drilling machine tool according to any one of claims 1-8, characterized in that, The use method comprises the following steps: S1: in the process of initially positioning and assembling the drill rod (11) and the drill rod sleeve (10) in the rock drill head (1), the plurality of abutting arc plates (21) arranged in the circumferential direction of the rotation sleeve (20) are driven by the driving end (22) to guide the drill rod (11) to keep the central axis aligned with the drill rod sleeve (10); S2: In the process of drilling operation, by driving the end to drive a number of pressure arc plate (21) to exert radial constraint relative to the drill rod (11), to avoid the drill rod (11) in the process of operation, easy to be driven by the reaction force to occur deviation problem, at the same time, guide the drill rod (11) always keep the center axis alignment relative to the drill collar (10); S3: Still through the friction effect generated by the radial constraint of a number of circumferential pressure arc plate on the drill rod (11), to buffer the trend of the drill rod (11) to be moved by the rock reaction force wave, reduce the position deviation of the drill rod (11) in the drilling process.

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