Automatic rod changing device for mining directional drilling rig

Abstract

The present invention relates to the field of drill rod replacement, and in particular to an automatic rod replacement device for a mining directional drill. It includes a base, a slide rail is installed on the base, a drill bit driving mechanism and a drill rod clamping mechanism are installed on the slide rail, and also includes a sliding rod, the left and right sides of the base are fixed with sliding rods, and the sliding rod is symmetrically slidably connected with a sliding bracket, and a first spring is connected between the front and rear sliding brackets. The present invention adjusts the position of the limit frame by a screw rod, and then adjusts the position of the sliding bracket, so that the clamping unit can adapt to drill rods of different lengths. When the drill bit driving mechanism moves, it will push the sliding bracket, so that the suspended part of the drill rod during operation becomes shorter, which improves the stability and working accuracy of the drill rod during operation, avoids the situation of eccentric drilling, and improves the service life of the drill rod. The clamping unit can adjust the position of the drill rod in real time along the front and rear directions through the squeezing of the drill rod by the drill bit driving mechanism, prevents the drill rod from being damaged and deformed, and improves the service life of the drill rod.

Description

Technical Field

[0001] The invention relates to the field of drilling rig rod changing, and in particular to an automatic rod changing device for a mining directional drilling rig. Background Art

[0002] A mining directional drill is a device used to drill long and thin holes. It is often used to obtain geological minerals during geological exploration. When operating a mining directional drill, multiple drill rods are often required to be connected for gradual drilling. Mining directional drills are often used in mine caves or harsh environments with a lot of flying dust. Therefore, each unit on the mining directional drill has good dustproof effect or environmental adaptability. The existing automatic rod changing device often has a rotatable placement frame installed on the side, and a manipulator that can grab the drill rod.

[0003] In actual use, when the drill rod is installed through a thread, the driving part is often not aligned with the thread, resulting in friction and extrusion between the drill rod and the driving part during installation, causing the device to vibrate, seriously affecting the installation stability of the device. In addition, the friction of the drill rod will expose the surface and make it susceptible to oxidation corrosion. After the drill rod is installed, the manipulator will detach from the drill rod, causing the suspended part of the drill rod to be too long during subsequent operations, which can easily cause the drill rod to be affected by vibration when rotating, causing the suspended part to bend, thereby causing the drilling direction to shift. The existing automatic rod changing device can only use drill rods of fixed specifications, and drill rods of other specifications cannot be installed and placed, resulting in poor applicability of the device. Summary of the invention

[0004] In order to overcome the disadvantages that only drill rods of the same length can be used when changing rods and that vibration of the drill rods during operation causes eccentric drilling, the purpose of the present invention is to provide an automatic rod changing device for mining directional drills that can adapt to different lengths.

[0005] The technical implementation scheme of the present invention is: an automatic rod changing device for a mining directional drilling rig, comprising a base, a slide rail is installed on the base, a drill bit driving mechanism and a drill rod clamping mechanism are installed on the slide rail, and also comprises a sliding rod, the sliding rods are fixedly connected to the left and right sides of the base, and the sliding rods are symmetrically slidably connected with a sliding bracket, a first spring is connected between the front and rear sliding brackets, a second spring is connected between the sliding bracket close to the drill rod clamping mechanism and the base, and a cross plate is fixedly connected between the left and right sliding brackets, an adjusting bracket is fixedly connected to the bottom of the sliding bracket at the front left side, a first motor is installed at the front side of the adjusting bracket, an output shaft of the first motor passes through the adjusting bracket and is fixedly connected to a screw rod, one end of the screw rod is threadedly connected to a limiting bracket, one side of the limiting bracket is slidably connected to the base, a blocking block is arranged at the rear end of the top of the limiting bracket, the blocking block contacts the sliding bracket at the rear end of the left side, a clamping unit is installed on the sliding bracket, a rod storage unit is arranged above the clamping unit, the rod storage unit is connected to the base, and a control unit is installed in the sliding bracket.

[0006] Preferably, the clamping unit includes a first support frame, which is fixedly connected to the sliding frame, and second motors are installed on the two first support frames close to the drill rod clamping mechanism. A Hawken connecting rod group is installed on the inner wall of the first support frame, and the output shaft of the second motor is connected to the adjacent Hawken connecting rod group. A flexible rotating rod is installed between the front and rear Hawken connecting rod groups.

[0007] Preferably, the clamping unit also includes a balancing link and a horizontal plate, four balancing links are rotatably connected in a mirror-image distribution on the sliding bracket, two adjacent balancing links are rotatably connected with a T-shaped frame, a horizontal plate is installed on the Hawken link group, and both T-shaped frames are slidably connected to the horizontal plate.

[0008] Preferably, the clamping unit also includes a telescopic plate, one end of the horizontal plate is sealed and slidably connected to the telescopic plate, a third spring is connected between the horizontal plate and the telescopic plate, one end of the telescopic plate is slidably connected to a clamp housing, and a rolling unit is installed in the clamp housing.

[0009] Preferably, the rolling unit includes a sleeve, which is fixed inside the clamp housing, and a sliding rod is slidably connected to the inner wall of the sleeve. The sliding rod passes through the clamp housing and is fixed to the telescopic plate, and the outer wall of the sliding rod is located between the telescopic plate and the clamp housing and is connected to a fourth spring.

[0010] Preferably, the rolling unit further comprises a V-shaped support frame, one end of the slide rod is fixedly connected to the V-shaped support frame, and two first rollers are rotatably connected to the V-shaped support frame.

[0011] Preferably, the rolling unit also includes an adjusting connecting rod and an L-shaped support frame, the adjusting connecting rods are rotatably connected on both sides of the outer wall of the sleeve, the L-shaped support frame is rotatably connected on both sides of the outer wall of the sliding rod, the L-shaped support frame is rotatably connected to the adjusting connecting rod, and the second roller is rotatably connected to the L-shaped support frame.

[0012] Preferably, the control unit includes a piston cylinder, a piston cylinder is fixedly connected in the sliding bracket, a U-shaped piston column is slidably connected in the piston cylinder, a wedge block is fixedly connected to one end of the U-shaped piston column, and a circular through hole is opened at the other end of the U-shaped piston column, and the circular through hole passes through the sliding bracket through a hose and connects to the telescopic plate.

[0013] Preferably, the rod storage unit includes a second support frame, a second support frame is fixedly connected to the base, a rod storage box is fixedly connected to one end of the second support frame, the first support frame is in sliding contact with the rod storage box, a convex plate is slidably connected inside the rod storage box, a fifth spring is connected between the rod storage box and the convex plate, and a corrugated plate is fixedly connected to the bottom of the rod storage box in a mirror distribution.

[0014] Preferably, it also includes a cleaning unit, which includes a positioning ring and a rotating ring. The positioning ring and the rotating ring are installed on the drill rod clamping mechanism. The positioning ring is coaxial with the rotating ring. A clockwork spring is connected between the positioning ring and the rotating ring. The rotating ring is connected to the sliding bracket on the left side of the front end through a steel rope. Spiral brushes are fixedly distributed circumferentially inside the rotating ring.

[0015] The present invention has the following advantages: 1. The present invention adjusts the position of the limit frame through a screw rod, and then adjusts the position of the sliding bracket, so that the clamping unit can adapt to drill rods of different lengths. When the drill bit driving mechanism moves, it will push the sliding bracket, so that the suspended part of the drill rod during operation becomes shorter, thereby improving the stability and working accuracy of the drill rod during operation, avoiding the situation of eccentric drilling, and increasing the service life of the drill rod. Moreover, the clamping unit can adjust the position of the drill rod in real time along the front and rear directions by squeezing the drill rod through the drill bit driving mechanism, thereby preventing the drill rod from being damaged and deformed, and increasing the service life of the drill rod.

[0016] 2. The present invention can adjust the position of the slide rod through the rolling unit to achieve contact between the drill rod and the first roller and the second roller, so that the rolling unit can limit the drill rod in different directions. When the first roller is just separated from the drill rod and the second roller is in contact with the drill rod for limiting position, the friction vibration of the drill rod during installation can be reduced, thereby improving the stability of the drill rod during installation and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the clamping unit of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the limiting frame of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the sliding bracket of the present invention;

[0021] Figure 5 A half-section schematic diagram of a sliding bracket of the present invention;

[0022] Figure 6 It is a partial cutaway schematic diagram of the telescopic plate of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the rolling unit of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the control unit of the present invention;

[0025] Fig. 9 It is a partial cutaway schematic diagram of the rod storage box of the present invention;

[0026] Fig.10 It is a partial cutaway schematic diagram of the positioning ring of the present invention.

[0027] The markings of the components in the accompanying drawings are as follows: 1: base, 2: slide rail, 201: drill bit drive mechanism, 202: drill rod clamping mechanism, 3: sliding rod, 4: sliding bracket, 5: cross plate, 6: adjustment frame, 7: first motor, 8: screw rod, 9: limit frame, 10: first support frame, 11: second motor, 12: Hawken connecting rod group, 13: flexible rotating rod, 14: balance connecting rod, 15: T-shaped frame, 16: horizontal plate , 17: telescopic plate, 18: clamping claw housing, 19: sleeve, 20: sliding rod, 21: V-shaped support frame, 22: first roller, 23: adjusting connecting rod, 24: L-shaped support frame, 25: second roller, 29: second support frame, 26: piston cylinder, 27: U-shaped piston column, 28: wedge block, 30: rod storage box, 31: convex plate, 32: wave plate, 33: positioning ring, 34: rotating ring, 35: spiral brush. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0029] Embodiment 1: An automatic rod changing device for a mining directional drill, such as Figure 1-Figure 9 As shown, it includes a base 1, a slide rail 2 is installed on the base 1, a drill bit driving mechanism 201 and a drill rod clamping mechanism 202 are installed on the slide rail 2, and also includes a sliding rod 3. The left and right sides of the base 1 are fixedly connected with the sliding rod 3, and the sliding rod 3 is symmetrically slidably connected with a sliding bracket 4. A first spring is connected between the front and rear sliding brackets 4, and a second spring is connected between the sliding bracket 4 close to the drill rod clamping mechanism 202 and the base 1. The elastic coefficient of the first spring is smaller than that of the second spring. A cross plate 5 is fixedly connected between the left and right sliding brackets 4, and the cross plate 5 is used to keep the sliding brackets 4 on the left and right sides moving in the same direction. Step, an adjusting frame 6 is fixedly connected to the bottom of the sliding bracket 4 at the front left side, and a first motor 7 is installed on the front side of the adjusting bracket 6. The output shaft of the first motor 7 passes through the adjusting bracket 6 and is fixedly connected to a screw rod 8. One end of the screw rod 8 is threadedly connected to a limiting frame 9, and one side of the limiting frame 9 is slidably connected to the base 1. A blocking block is provided at the top of the limiting frame 9 at the rear end, and the blocking block contacts the sliding bracket 4 at the rear end of the left side, and is used to limit the sliding range of the sliding bracket 4 at the rear end. A clamping unit is installed on the sliding bracket 4, and a storage rod unit is provided above the clamping unit. The storage rod unit is connected to the base 1, and a control unit is installed in the sliding bracket 4.

[0030] The clamping unit includes a first support frame 10, which is fixedly connected to the sliding support 4. Second motors 11 are installed on the two first support frames 10 close to the drill rod clamping mechanism 202. A Hawken connecting rod group 12 is installed on the inner wall of the first support frame 10. The Hawken connecting rod group 12 consists of a driving rod, a driven rod and a track rod. The driving rod and the driven rod are symmetrically connected to the inner side of the first support frame 10. The driving rod is rotationally connected to one end of the track rod, and the driven rod is rotationally connected to the middle of the track rod. A support rod is fixed between two adjacent track rods. The length ratio of the driving rod, the driven rod and the track rod is 2:5:10, and the distance between the driving rod and the transition point to the driven rod is 1:2. The output shaft of the second motor 11 is fixedly connected to the driving rod of the adjacent Hawken connecting rod group 12, and a flexible rotating rod 13 is installed between the front and rear Hawken connecting rod groups 12. The flexible rotating rod 13 is used to transmit rotational torque.

[0031] The clamping unit also includes a balancing link 14 and a horizontal plate 16. Four balancing links 14 are rotatably connected to the sliding bracket 4 in a mirror-distributed manner. A T-shaped frame 15 is rotatably connected to two adjacent balancing links 14. The sliding bracket 4, the two balancing links 14, and the T-shaped frame 15 form a parallelogram structure. One end of the track rod of the Hawken link group 12 is rotatably connected to the horizontal plate 16. Horizontal slide grooves are provided on the front and rear sides of the horizontal plate 16. The two T-shaped frames 15 are slidably connected to the horizontal slide grooves of the horizontal plate 16.

[0032] The clamping unit also includes a telescopic plate 17, one end of the horizontal plate 16 is sealed and slidably connected to the telescopic plate 17, a gap is left between the horizontal plate 16 and the telescopic plate 17, the gap between the horizontal plate 16 and the telescopic plate 17 is filled with hydraulic oil, a third spring is connected between the horizontal plate 16 and the telescopic plate 17, one end of the telescopic plate 17 is slidably connected to a clamp housing 18, and a rolling unit is installed in the clamp housing 18.

[0033] The rolling unit includes a sleeve 19, which is fixed inside the clamp housing 18. A slide rod 20 is slidably connected to the inner wall of the sleeve 19. The slide rod 20 passes through the clamp housing 18 and is fixed to the telescopic plate 17. The outer wall of the slide rod 20 is located between the telescopic plate 17 and the clamp housing 18 and is connected to a fourth spring.

[0034] The rolling unit also includes a V-shaped support frame 21, and one end of each of the four sliding rods 20 is fixedly connected to the V-shaped support frame 21. Two first rollers 22 are rotatably connected to the V-shaped support frame 21. The first rollers 22 are used to limit the movement direction of the drill rod, and the surface of the first rollers 22 is relatively rough.

[0035] The rolling unit also includes an adjusting link 23 and an L-shaped support frame 24. The adjusting links 23 are rotatably connected to both sides of the outer wall of the sleeve 19, and the L-shaped support frames 24 are rotatably connected to both sides of the outer wall of the slide bar 20. The L-shaped support frame 24 is rotatably connected to the adjusting link 23. A second roller 25 is rotatably connected to the L-shaped support frame 24. The second roller 25 is used to limit the movement direction of the drill rod, and the surface of the second roller 25 is relatively rough.

[0036] The control unit includes a piston cylinder 26, the piston cylinder 26 is fixedly connected in the sliding bracket 4, a U-shaped piston column 27 is slidably connected in the piston cylinder 26, a wedge block 28 is fixedly connected to one end of the U-shaped piston column 27, and a circular through hole is opened at the other end of the U-shaped piston column 27, the circular through hole passes through the sliding bracket 4 and is connected to the telescopic plate 17 through a hose, and the wedge block 28 is used to adjust the position of the U-shaped piston column 27, thereby preventing the clamping unit from colliding with the drill rod clamping mechanism 202.

[0037] The rod storage unit includes a second support frame 29, which is fixedly connected to the base 1, and a rod storage box 30 is fixedly connected to one end of the second support frame 29. The middle part of the rod storage box 30 is a trapezoidal structure that is wide at the top and narrow at the bottom. The first support frame 10 is in sliding contact with the rod storage box 30, and a convex plate 31 is slidably connected inside the rod storage box 30. A fifth spring is connected between the rod storage box 30 and the convex plate 31, and a wave plate 32 is fixedly connected to the bottom of the rod storage box 30 in a mirror distribution, and the wave plate 32 is used to fix the drill rod.

[0038] In the initial state, the drill driving mechanism 201 is at the rear end of the slide rail 2, and the four clamping claw shells 18 are distributed in a rectangular shape below the rod storage box 30. There are several drill rods in the rod storage box 30 above the wave plate 32. Several drill rods squeeze the fifth spring through the convex plate 31, and one of the drill rods is clamped by the two wave plates 32; the staff first starts the first motor 7, and the output shaft of the first motor 7 rotates to drive the screw rod 8 to rotate synchronously. The screw rod 8 rotates to drive the limit frame 9 to slide forward on the base 1 through the thread, so that the limit frame 9 pushes the sliding bracket 4 at the rear end of the left side to slide forward through the blocking block, and the sliding bracket 4 at the rear end of the left side drives the sliding bracket 4 at the rear end of the right side to move synchronously through the rear end cross plate 5, and the two sliding brackets 4 at the rear end will squeeze the two first springs respectively when moving forward, so that the two first springs squeeze the two sliding brackets 4 at the front end to move forward respectively. Then, the two second springs are squeezed, wherein the two sliding brackets 4 at the front end keep moving synchronously through the horizontal plate 5 therebetween, and when the four sliding brackets 4 move, they all drive the Hawken connecting rod group 12 to move synchronously through the first support frame 10, and the Hawken connecting rod group 12 moves through the horizontal plate 16 to drive the telescopic plate 17 to move, and the telescopic plate 17 moves through the clamping claw housing 18 to drive the rolling unit to move synchronously. Since the elastic coefficient of the first spring is smaller than that of the second spring, the front sliding bracket 4 moves slower than the rear sliding bracket 4, thereby adjusting the spacing between the front and rear sliding brackets 4, and changing the front and rear distance between the front and rear rolling units. If a shorter drill rod needs to be grabbed, the distance between the front and rear rolling units is shortened, and if a longer drill rod needs to be grabbed, the distance between the front and rear rolling units is increased, thereby adapting to drill rods of different lengths.

[0039] Then, the two second motors 11 are started to drive the two clamping units. The actions performed by the two clamping units are mirror images of each other. At this time, taking the second motor 11 of the right clamping unit as an example, according to Figure 4 and Figure 5As shown, the output shaft of the second motor 11 rotates counterclockwise to drive the Hawken connecting rod group 12 to move, so that the Hawken connecting rod group 12 drives the horizontal plate 16 to move. It is worth noting that due to the special connecting rod ratio of the Hawken connecting rod group 12, the trajectory of the track rod of the Hawken connecting rod group 12 when it is moving, the motion trajectory of the end away from the drill rod is D-shaped, and the D-shaped trajectory is composed of an arc segment and a straight line segment. The straight line segment is perpendicular to the horizontal plate 16, and the two ends of the arc segment are connected to the two ends of the straight line segment and the position of the arc segment is far away from the drill rod. At this time, this end is not at the highest point of the motion trajectory; the horizontal plate 16 moves upward along the arc segment portion of the D-shaped trajectory and approaches the drill rod. After the horizontal plate 16 reaches the highest point of the D-shaped trajectory, that is, the arc segment and At the top connection of the straight section, the drill rod clamped by the two wave plates 32 is clamped by the second rollers 25 on the left and right sides, and then the horizontal plate 16 slides downward along the straight section of the D-shaped track, and through the clamping of the second rollers 25, drives the drill rod to slide downward, so that the drill rod is released from the clamping of the two wave plates 32. In the process of the horizontal plate 16 moving upward along the arc section of the D-shaped track, the Hawken connecting rod group 12 at the front end drives the Hawken connecting rod group 12 at the rear end to move synchronously through the flexible rotating rod 13, so that the two horizontal plates 16 at the front and rear ends keep moving synchronously. At the same time, the movement of the horizontal plate 16 drives the T-shaped frame 15 to move through the horizontal slide groove, and the movement of the T-shaped frame 15 will affect the horizontal The balance link 14 rotates, and since the sliding bracket 4, the balance link 14 and the T-shaped frame 15 form a parallelogram structure, the horizontal plate 16 always maintains a horizontal state. In the process of the horizontal plate 16 approaching the drill rod, the horizontal plate 16 moves and pushes the telescopic plate 17 to move synchronously through the third spring, and drives the slide bar 20 to move. The slide bar 20 drives the two first rollers 22 to move close to the drill rod through the V-shaped support frame 21. At this time, the two L-shaped support frames 24 are driven by the slide bar 20 to move synchronously, so that the two second rollers 25 move along the surface of the drill rod and respectively drive the two L-shaped support frames 24 to rotate. The two L-shaped support frames 24 rotate and drive the sleeve 19 away from the first rollers through the two adjusting links 23. The second roller 25 is used to move the jaw housing 18 away from the drill rod and squeeze the fourth spring. At this time, the main pressure on the drill rod is transferred from the second roller 25 to the first roller 22, making it easier for the drill rod to rotate axially. During the downward movement of the horizontal plate 16 along the straight section of the D-shaped track, the horizontal plate 16 drives the jaw housing 18 to move synchronously through the telescopic plate 17. The four jaw housings 18 on the left and right sides move synchronously through the four rolling units, so that the drill rod is disengaged from the clamping of the two wave plates 32. At the same time, the fifth spring continues to squeeze the drill rod downward through the convex plate 31, so that the drill rod at the bottom of the rod storage box 30 is squeezed into between the two wave plates 32, completing the replenishment of the drill rod.When the rolling unit is at the bottom of the D-shaped track, that is, the connection between the arc segment and the bottom end of the straight segment, the second motor 11 continues to rotate counterclockwise, so that the Hawken connecting rod group 12 drives the horizontal plate 16 to move along the arc segment of the D-shaped track away from the drill rod, and at the same time, the telescopic plate 17 is driven to move synchronously, so that the slide bar 20 moves in the direction away from the drill rod, and then the fourth spring is released to push the clamping jaw housing 18 close to the drill rod. The movement of the clamping jaw housing 18 causes the sleeve 19 to control the rotation of the L-shaped support frame 24 through the adjusting connecting rod 23. The rotation of the L-shaped support frame 24 drives the second roller 25 to rotate synchronously until the first roller 22 just breaks away from the drill rod. At this time, the second roller 25 contacts the outer wall of the drill rod, making it easier for the drill rod to move axially. Then The second motor 11 is stopped to complete the installation position positioning of the drill rod, and the drill rod waits for the drill bit driving mechanism 201 to work to execute the action of connecting the drill rod (the drill bit driving mechanism 201 is a prior art, so the internal working principle of the drill bit driving mechanism 201 is not described in detail); the drill bit driving mechanism 201 moves forward so that its installation position contacts the drill rod. If the movement distance of the drill bit driving mechanism 201 is too long, it will push the drill rod forward, and at the same time the second roller 25 rolls to prevent the drill rod and the drill bit driving mechanism 201 from being squeezed and damaged; when the drill bit driving mechanism 201 contacts the drill rod, its installation position cooperates with the thread of the drill rod. At this time, the staff adjusts the drill bit driving mechanism 201 so that the installation position of the drill bit driving mechanism 201 The drill bit driving mechanism 201 rotates and moves forward slowly, so that the drill bit driving mechanism 201 and the drill rod are threadedly installed. If the threads of the drill bit driving mechanism 201 and the drill rod are not aligned, the drill rod will be further pushed until the drill rod installation part of the drill bit driving mechanism 201 is screwed into the drill rod. When the drill bit driving mechanism 201 and the drill rod are installed, the installation part of the drill bit driving mechanism 201 rotates to drive the drill rod to rotate. The rotation axis of the contact surface of the second roller 25 and the rotation axis of the drill rod are not in the same direction, so that the drill rod rubs against the second roller 25 when rotating. When the second roller 25 is rubbed, it will vibrate rapidly under the support of the L-shaped support frame 24. The vibration is transmitted to the adjusting connecting rod 23 through the L-shaped support frame 24 and is transmitted to the adjusting connecting rod 23 through the sleeve 19. The friction between the first roller 22 and the second roller 25 is transmitted to the clamp housing 18 and finally absorbed by the fourth spring, thereby avoiding thread fatigue caused by excessive rotation angle during drill rod installation, prolonging the service life of the drill rod, reducing the time of drill rod installation, and improving the installation efficiency of the drill rod; at the same time, the second roller 25 will be separated from the drill rod during vibration. When the second roller 25 is separated from the drill rod, the first roller 22 will be driven to approach the drill rod through the slide bar 20. Since the first roller 22 has just been separated from the drill rod when it stops moving, the first roller 22 will contact the drill rod at the moment when the second roller 25 is separated from the drill rod. The first roller 22 and the second roller 25 continue to contact the drill rod alternately through vibration, which can reduce the friction vibration of the drill rod during installation and improve the stability of the drill rod during installation.

[0040] After the drill rod and the drill driving mechanism 201 are installed, the staff adjusts the drill driving mechanism 201 to make it move forward only. If the drill rod is not clamped in the drill rod clamping mechanism 202, the drill rod will move through the drill rod clamping mechanism 202. In this process, when the drill driving mechanism 201 continues to move forward, it will squeeze the sliding brackets 4 on the left and right sides of the rear end, so that the sliding brackets 4 on the left and right sides of the rear end move to squeeze the first spring and push the sliding bracket 4 at the front end to move. The sliding bracket 4 at the front end moves to squeeze the second spring. Since the elastic coefficient of the first spring is smaller than that of the second spring, the two front ends The sliding bracket 4 moves slowly to support the drill rod to avoid the suspended part of the drill rod being too long, which may easily cause the drill rod to be affected by vibration when rotating, causing the suspended part to bend, thereby causing the drilling direction to shift; if the drill rod is clamped in the drill rod clamping mechanism 202, the above-mentioned action of moving the drill bit drive mechanism 201 forward is repeated. When the drill rod between the four sliding brackets 4 contacts the drill rod in the drill rod clamping mechanism 202, the above-mentioned action of rotating the installation part of the drill bit drive mechanism 201 is repeated, so that the installation part of the drill bit drive mechanism 201 is rotated forward, and the two drill rods are connected by threads to complete the installation of the two drill rods.

[0041] The sliding bracket 4 at the front end moves forward and drives the wedge block 28 to move synchronously, so that the wedge block 28 contacts the drill rod clamping mechanism 202, and the wedge block 28 is squeezed by the drill rod clamping mechanism 202. The wedge block 28 slides and drives the U-shaped piston column 27 to slide away from the drill rod clamping mechanism 202. When the U-shaped piston column 27 slides, the internal volume of the piston cylinder 26 increases, so that the piston cylinder 26 absorbs hydraulic oil to the hose through the circular through hole of the U-shaped piston column 27, and the hose absorbs the hydraulic oil through the gap between the horizontal plate 16 and the telescopic plate 17, so that the telescopic plate 17 moves. At the same time, the third spring is compressed, and the telescopic plate 17 moves through the rolling unit to shorten the distance between the clamp housing 18 and the horizontal plate 16, and the rolling unit is separated from the drill rod, thereby preventing the clamp housing 18 and the rolling unit from colliding with the drill rod clamping mechanism 202 and causing damage.

[0042] If it is necessary to add a drill rod, the staff will start the drill rod clamping mechanism 202 to clamp the drill rod, and start the drill bit driving mechanism 201 to make it disengage from the drill rod and slide backward, so that the drill bit driving mechanism 201 releases the sliding bracket 4, and the second spring reset pushes the front sliding bracket 4 to slide, and at the same time, the first spring reset pushes the rear sliding bracket 4 to slide along the sliding rod 3 until the rear sliding bracket 4 contacts the blocking block on the top of the limit frame 9 to complete the reset. In this process, the wedge block 28 disengages from the drill rod clamping mechanism 202, so that the third spring releases and pushes the telescopic plate 17. At this time, the gap between the horizontal plate 16 and the telescopic plate 17 becomes larger, thereby absorbing hydraulic oil to the hose. The hose absorbs hydraulic oil to the piston cylinder 26 through the U-shaped piston column 27. When the piston cylinder 26 absorbs the hydraulic oil and is extracted, it will control the U-shaped piston column 27 to move, and the U-shaped piston column 27 drives the wedge block 28 to move and reset; after the sliding bracket 4 is reset, according to Figure 4 and Figure 5 As shown, the staff starts the second motor 11, and the output shaft of the second motor 11 rotates counterclockwise, so that the Hawken connecting rod group 12 drives the horizontal plate 16 to move upward along the arc segment of the D-shaped trajectory to complete the reset. The horizontal plate 16 moves through the telescopic plate 17 to drive the jaw housing 18 to move, so that the jaw housing 18 drives the rolling unit to reset, which is convenient for the subsequent addition of new drill rods.

[0043] When the drill rod is working, the drill driving mechanism 201 drives the drill rod to rotate and drill a hole. When the drill rod is drilling, the drill driving mechanism 201 continues to move forward. When the drill rod completes its work, it is necessary to recycle the drill rod. At this time, the drill rod connected to the drill driving mechanism 201 is initially located inside the drill rod clamping mechanism 202. Initially, the drill rod inside the drill rod clamping mechanism 202 is located in the borehole. The staff starts the drill driving mechanism 201 to drive the drill rod to slide backward, so that the sliding bracket 4 repeats the above-mentioned reset action under the action of the first spring and the second spring, and then starts the second motor 11. Figure 4 and Figure 5As shown, the staff starts the second motor 11, the output shaft of the second motor 11 rotates counterclockwise, and the clamping unit repeats the action of the first roller 22 approaching the drill rod, so that the first roller 22 limits the axial position of the drill rod; when the drill rod in the borehole slides into the drill rod clamping mechanism 202, the drill rod clamping mechanism 202 is started to clamp the drill rod inside, and the staff drives the installation part of the drill bit driving mechanism 201 to rotate to separate the two drill rods, and then the staff starts the second motor 11 again to make the second motor 11 on the right side rotate counterclockwise and the second motor 11 on the left side rotate clockwise, so that the clamping unit repeats the action of the second roller 25 clamping the drill rod, and the staff starts the drill bit driving mechanism 201 to make the installation part of the drill bit driving mechanism 201 rotate. The drill rod 16 is detached from the drill rod by sliding and adjusting the output shaft of the second motor 11 to rotate in the opposite direction, so that the four Hawken connecting rod groups 12 all drive the horizontal plate 16 to slide upward along the straight section, and the horizontal plate 16 slides upward and drives the clamping claw housing 18 to move upward through the telescopic plate 17, thereby driving the rolling unit to clamp the drill rod and reset it. The drill rod clamped by the rolling unit squeezes the other drill rods clamped by the wave plate 32 and makes it enter the rod storage box 30, so that the convex plate 31 moves upward and squeezes the fifth spring. After the drill rod enters the rod storage box 30, since the rod storage box 30 is a structure with a wide top and a narrow bottom, the drill rod will move laterally when it is loaded, thereby effectively reducing space waste and making the center of gravity of the entire device more biased to the center, preventing the center of gravity from shifting to the left and right sides to aggravate parts fatigue and improve the stability of the device.

[0044] Embodiment 2: Based on embodiment 1, Fig.10 As shown, it also includes a cleaning unit, which includes a positioning ring 33 and a rotating ring 34. The positioning ring 33 and the rotating ring 34 are installed on the drill rod clamping mechanism 202. The positioning ring 33 is fixedly connected to the outer shell of the drill rod clamping mechanism 202, and the rotating ring 34 is rotatably connected to the outer shell of the drill rod clamping mechanism 202. The positioning ring 33 is coaxial with the rotating ring 34, and a clockwork spring is connected between the positioning ring 33 and the rotating ring 34. The rotating ring 34 passes through the positioning ring 33 through a steel rope and is connected to the sliding bracket 4 on the left side of the front end. Spiral brushes 35 are fixedly connected to the rotating ring 34 in the circumferential direction.

[0045] When the sliding bracket 4 located at the left end of the front side moves, the clockwork spring will be deformed and drive the rotating ring 34 to rotate. When the sliding bracket 4 is close to the rotating ring 34, the clockwork spring is released to make the rotating ring 34 reel in the steel rope. Conversely, the sliding bracket 4 pulls the steel rope through the rotating ring 34 to control the contraction of the clockwork spring, and drives the spiral brush 35 to rotate and clean the drill pipe through the rotating ring 34. The rock debris on the surface of the drill pipe and the cooling water during drilling will be cleaned and dropped along the spiral direction of the spiral brush 35, so that the drill pipe is kept clean and dry, and the water stains on the surface of the drill pipe and the rock debris are prevented from forming an electrolyte solution, which causes the drill pipe to corrode and rust.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic rod changing device for a mining directional drill, comprising a base (1), a slide rail (2) mounted on the base (1), a drill driving mechanism (201) and a drill rod clamping mechanism (202) mounted on the slide rail (2), characterized in that: The base (1) also includes a sliding rod (3), the sliding rods (3) are fixedly connected to the left and right sides of the base (1), the sliding rods (3) are symmetrically slidably connected to the sliding brackets (4), a first spring is connected between the front and rear sliding brackets (4), a second spring is connected between the sliding bracket (4) close to the drill rod clamping mechanism (202) and the base (1), a cross plate (5) is fixedly connected between the left and right sliding brackets (4), an adjustment bracket (6) is fixedly connected to the bottom of the left front sliding bracket (4), and a first spring is installed on the front side of the adjustment bracket (6). a motor (7), wherein the output shaft of the first motor (7) passes through the adjustment frame (6) and is fixedly connected to a screw rod (8), one end of the screw rod (8) is threadedly connected to a limit frame (9), one side of the limit frame (9) is slidably connected to the base (1), a stop block is provided at the top of the limit frame (9) at the rear end, the stop block contacts the sliding bracket (4) at the left rear end, a clamping unit is installed on the sliding bracket (4), a rod storage unit is provided above the clamping unit, the rod storage unit is connected to the base (1), and a control unit is installed in the sliding bracket (4); The clamping unit comprises a first support frame (10), the first support frame (10) is fixedly connected to the sliding frame (4), the second motor (11) is installed on the two first support frames (10) close to the drill rod clamping mechanism (202), a Hawken connecting rod group (12) is installed on the inner wall of the first support frame (10), the output shaft of the second motor (11) is connected to the adjacent Hawken connecting rod group (12), and a flexible rotating rod (13) is installed between the front and rear Hawken connecting rod groups (12); The clamping unit also includes a balancing link (14) and a horizontal plate (16); four balancing links (14) are rotatably connected to the sliding bracket (4) in a mirror-image distribution; two adjacent balancing links (14) are rotatably connected to a T-shaped frame (15); a horizontal plate (16) is installed on the Hawken link group (12); and both T-shaped frames (15) are slidably connected to the horizontal plate (16); The clamping unit further comprises a telescopic plate (17), one end of the horizontal plate (16) is sealingly slidably connected to the telescopic plate (17), a third spring is connected between the horizontal plate (16) and the telescopic plate (17), one end of the telescopic plate (17) is slidably connected to a clamping claw housing (18), and a rolling unit is installed in the clamping claw housing (18); The rolling unit comprises a sleeve (19), the sleeve (19) is fixedly connected inside the clamping jaw housing (18), the inner wall of the sleeve (19) is slidably connected to a slide rod (20), the slide rod (20) passes through the clamping jaw housing (18) and is fixedly connected to the telescopic plate (17), and the outer wall of the slide rod (20) is located between the telescopic plate (17) and the clamping jaw housing (18) and is connected to a fourth spring; The rolling unit further comprises a V-shaped support frame (21), one end of the slide rod (20) is fixedly connected to the V-shaped support frame (21), and two first rollers (22) are rotatably connected to the V-shaped support frame (21); The rolling unit further comprises an adjusting connecting rod (23) and an L-shaped support frame (24); the adjusting connecting rod (23) is rotatably connected to both sides of the outer wall of the sleeve (19); the L-shaped support frame (24) is rotatably connected to both sides of the outer wall of the slide bar (20); the L-shaped support frame (24) is rotatably connected to the adjusting connecting rod (23); and a second roller (25) is rotatably connected to the L-shaped support frame (24).

2. The automatic rod changing device for a mining directional drill according to claim 1, characterized in that: The control unit comprises a piston cylinder (26), the piston cylinder (26) is fixedly connected in the sliding bracket (4), a U-shaped piston column (27) is slidably connected in the piston cylinder (26), a wedge-shaped block (28) is fixedly connected to one end of the U-shaped piston column (27), and a circular through hole is formed at the other end of the U-shaped piston column (27), and the circular through hole passes through the sliding bracket (4) through a hose and is connected to the telescopic plate (17).

3. The automatic rod changing device for a mining directional drill according to claim 1 is characterized in that: The rod storage unit comprises a second support frame (29), the second support frame (29) is fixedly connected to the base (1), a rod storage box (30) is fixedly connected to one end of the second support frame (29), the first support frame (10) is in sliding contact with the rod storage box (30), a convex plate (31) is slidably connected inside the rod storage box (30), a fifth spring is connected between the rod storage box (30) and the convex plate (31), and a corrugated plate (32) is fixedly connected to the bottom of the rod storage box (30) in a mirror-image distribution.

4. The automatic rod changing device for a mining directional drill according to claim 1 is characterized in that: The invention also comprises a cleaning unit, which comprises a positioning ring (33) and a rotating ring (34). The positioning ring (33) and the rotating ring (34) are mounted on the drill rod clamping mechanism (202). The positioning ring (33) and the rotating ring (34) are coaxial. A spring is connected between the positioning ring (33) and the rotating ring (34). The rotating ring (34) passes through the positioning ring (33) via a steel rope and is connected to a sliding bracket (4) on the left side of the front end. Spiral brushes (35) are fixedly connected to the rotating ring (34) in a circumferential direction.

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