A rock drill jumbo slagging system and a control method thereof

Abstract

This invention discloses a cuttings removal system and its control method for a rock drilling rig. The system includes a drill rod and a cuttings removal mechanism mounted on the drill rod. The cuttings removal mechanism includes an upper support, a lower support, and a cuttings removal section. The cuttings removal section is located between the upper and lower support. The lower support includes a lower plate, a lower guide wall, a lower guide plate, a lower connecting pipe, and an A-type guide port. The lower guide wall surrounds the lower plate and has the A-type guide port. The lower guide plate is mounted on the lower plate and is inclined downwards towards the A-type guide port. The lower connecting pipe passes through the lower plate and the lower guide plate. The cuttings removal section includes two sets of large-diameter semi-clamps and two sets of small-diameter semi-clamps mounted on the lower guide wall. This invention can prevent suspended liquid discharged during drilling from entering the propeller, avoiding various types of damage. At the same time, it can orderly discharge the suspended liquid from the main unit, preventing contamination of the propeller and drill arm.

Description

Technical Field

[0001] This invention relates to a rock drilling rig slag removal system and its control method, belonging to the field of rock drilling construction technology. Background Technology

[0002] As surface mineral resources become increasingly depleted, underground mining is gradually increasing. Factors such as the continuous decrease in the working-age population and changes in young people's career choices have promoted the use of underground rock drilling equipment. Rock drilling rigs are the main type of equipment among these, primarily used for drilling operations.

[0003] Rock drilling rigs can drill holes in various directions, with at least half of the holes drilled upwards, including directly above and at an angle. Hydraulic rock drills are generally used for drilling operations. The impact energy of the hydraulic rock drill is transmitted to the rock strata through the stern, drill rod, and drill bit, breaking the rock into cuttings. Simultaneously, high-pressure water is introduced into the bottom of the hole through the stern, drill rod, and drill bit via a water system. The high-pressure water carries the cuttings to form a suspension, which is discharged outside the hole through an annular channel between the hole wall and the drill rod. Due to inertia, the suspension flows downwards along the drill rod towards the propeller, and finally, the rock cuttings accumulate at the stern, propeller cylinder, and rock drill mounting block at the end of the rock drill. Rock cuttings accumulating at the drill bit shank enter the rock drill as it extends and retracts, causing rapid wear on the copper guide sleeve and water seal. If not addressed promptly, this can even damage critical components such as the impact piston, resulting in significant losses. Rock cuttings accumulating in the hydraulic cylinder cause wear on the piston rod plating and seals, eventually leading to oil leaks and pressure drops. Rock cuttings accumulating on the mounting block slider cause rapid slider wear, increasing replacement frequency and causing increased rock drill bounce during propulsion, increased drill bit overturning torque, and uneven wear on the copper sleeve, significantly increasing maintenance intensity and component replacement costs. To address these issues, the industry's generally accepted practices include... Figure 1 As shown, a perforated fabric-reinforced rubber or perforated steel plate is installed at the top frame of the thruster. This practice has the following problems:

[0004] First, in the process of using perforated steel plates, the diameter of the hole in the steel plate is larger than the diameter of the upset section of the drill rod, and the diameter of the upset section of the drill rod is larger than the diameter of the standard section of the drill rod. The gap between the diameter of the hole in the perforated steel plate and the standard section of the drill rod is relatively large, and during the drilling process, a large amount of suspended liquid still enters the propeller through this gap.

[0005] Secondly, in the perforated rubber reinforcement method, the diameter of the perforated rubber reinforcement is slightly larger than the diameter of the standard section of the drill rod. Due to the certain extensibility of the rubber reinforcement, when the upsetting section of the drill rod passes through, the perforated rubber reinforcement is squeezed to tightly wrap the upsetting section of the drill rod. This allows the entire drill rod to pass through the perforated rubber reinforcement hole during the drilling process, and the drill rod and the perforated rubber reinforcement hole maintain a small gap, which can prevent the suspension from entering the propeller. However, the perforated rubber reinforcement is relatively fixed to the top frame of the propeller. During the drilling process, due to the impact of the rock drill, the drill rod will inevitably experience small-amplitude periodic oscillations. This causes the high-speed rotating drill rod to rub against the perforated rubber reinforcement hole at high frequency, which in turn causes the diameter of the perforated rubber reinforcement hole to increase rapidly. The gap between the hole and the drill rod increases accordingly, and the suspension enters the propeller through this gap.

[0006] Third, when the suspension flows onto the perforated steel plate or the perforated cloth-reinforced rubber, it will flow irregularly in all directions, causing contamination of the thruster and drill arm. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rock drilling rig slag removal system and its control method. This system can prevent the suspended liquid discharged during the drilling process from entering the thruster and avoid various types of damage; at the same time, it can orderly discharge the suspended liquid from the main unit to prevent contamination of the thruster and drill arm.

[0008] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0009] In a first aspect, the present invention provides a rock drilling rig slag removal system, including a drill rod and a slag removal mechanism disposed on the drill rod. The slag removal mechanism includes an upper support portion, a lower support portion, and a slag removal portion, wherein the slag removal portion is disposed between the upper support portion and the lower support portion.

[0010] The lower support includes a lower plate, a lower guide wall, a lower guide plate, a lower connecting pipe, and an A-type guide port. The lower guide wall is arranged around the lower plate, and the A-type guide port is opened on the lower guide wall. The lower guide plate is arranged on the lower plate, and the lower guide plate is inclined downward towards the A-type guide port. The lower connecting pipe passes through the lower plate and the lower guide plate.

[0011] The structure of the upper support part is the same as that of the lower support part. The upper support part includes an upper flat plate, an upper guide wall, an upper guide plate, an upper connecting pipe, and a B guide port.

[0012] The slag discharge section includes two sets of large-diameter semi-clamps and two sets of small-diameter semi-clamps arranged on the lower guide wall. The two sets of large-diameter semi-clamps are combined with each other to form a ring, and the two sets of small-diameter semi-clamps are combined with each other to form a ring.

[0013] The drill pipe passes sequentially through the upper connecting pipe, the large-diameter half-clamp, the small-diameter half-clamp, and the lower connecting pipe.

[0014] Furthermore, the slag discharge section also includes two sets of supporting vertical plates, multiple sets of guide support rods, two sets of hydraulic cylinders, and two sets of connecting plates. The two sets of supporting vertical plates are symmetrically arranged on the lower guide wall. The two sets of hydraulic cylinders are respectively installed on the supporting vertical plates on both sides, and the output ends of the two sets of hydraulic cylinders are arranged in opposite directions. The output ends of both sets of hydraulic cylinders pass through the supporting vertical plates and are connected to the connecting plates. The large-diameter half-clamps and small-diameter half-clamps are installed on both sets of connecting plates. The two ends of the multiple sets of guide support rods are respectively fixed to the supporting vertical plates on both sides, and the multiple sets of guide support rods pass through the large-diameter half-clamps and small-diameter half-clamps respectively, so that the large-diameter half-clamps and small-diameter half-clamps slide on the guide support rods.

[0015] Furthermore, the slag discharge section also includes multiple sets of return springs, which are respectively installed between the support plate and the large-diameter half-clamp, and between the support plate and the small-diameter half-clamp. The multiple sets of return springs are respectively sleeved on the guide support rod, and the multiple sets of return springs apply an inward preload to the large-diameter half-clamp and the small-diameter half-clamp respectively.

[0016] Furthermore, the large-diameter semi-clamp includes a semi-clamp body and a semi-clamp connecting rod connected to each other. The end of the semi-clamp connecting rod away from the semi-clamp body is connected to the connecting plate. The semi-clamp body includes a semi-clamp body guide hole, a semi-clamp body upper arc surface, a semi-clamp body lower arc surface, and a semi-clamp body clamping rod arc. The guide support rod passes through the semi-clamp body guide hole. The semi-clamp body upper arc surface and the semi-clamp body lower arc surface are located on the upper end face and lower end face of the semi-clamp body, respectively. The semi-clamp body clamping rod arc is formed on the inner side of the semi-clamp body and fits against the drill rod.

[0017] Furthermore, the structure of the small-diameter half-card is the same as that of the large-diameter half-card, and the diameter of the small-diameter half-card is smaller than that of the large-diameter half-card.

[0018] Furthermore, the large-diameter half-clamp and the small-diameter half-clamp are respectively interference-fitted with the upsetting section and the standard section of the drill pipe.

[0019] Furthermore, the lower plate and the lower guide plate form an angle of 20° to 30°, and the upper plate and the upper guide plate form an angle of 20° to 30°.

[0020] Secondly, the present invention provides a control method applicable to the rock drilling rig slag removal system described in any of the preceding claims, the control method comprising:

[0021] During drilling, the control cylinder is in a fully retracted state, with the two large-diameter half-clamps and the two small-diameter half-clamps in contact with each other. This ensures that at least one set of the large-diameter or small-diameter half-clamps maintains good contact with the drill rod as it passes through the slag removal mechanism in the standard and upsetting sections. A portion of the suspended liquid flowing from the hole enters the upper support section and, under the action of the upper guide wall, upper guide plate, and upper connecting pipe, is discharged from the B guide port. The remaining suspended liquid enters the lower support section and, due to being blocked by the large-diameter or small-diameter half-clamps, flows down along them and is discharged from the A guide port under the action of the lower guide wall, lower guide plate, and lower connecting pipe.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0023] 1. During drilling, part of the suspended liquid flowing out of the hole enters the upper support section and is discharged from the B guide port under the action of the upper guide wall, upper guide plate, and upper connecting pipe; the other suspended liquid enters the lower support section and, due to being blocked by the large or small half of the clamping body, flows down along the upper arc surface of the large or small half of the clamping body and is discharged from the A guide port under the action of the lower guide wall, lower guide plate, and lower connecting pipe; the suspended liquid is guided and discharged in a concentrated manner, which will not damage the components inside the propeller and will also avoid contamination of the propeller and drill arm.

[0024] 2. During drilling, at the connection between the two drill rods, in the area where the upset section and the standard section connect, the diameters differ significantly. One set of large-diameter half-clamps on top and one set of small-diameter half-clamps on the bottom. This ensures that at least one set of the large half-clamps and the small half-clamps fits well with the drill rod, preventing the suspended liquid from entering the propeller and effectively avoiding damage to the components inside the propeller. It also prevents contamination of the propeller and the drill arm.

[0025] 3. During the drilling process, drill rod swaying is inevitable due to uneven geological conditions. The return spring can ensure that at least one of the large half-clamping rod arc and the small half-clamping rod arc is in good contact with the drill rod, preventing the suspended liquid from entering the propeller and effectively avoiding damage to the components inside the propeller, while also preventing contamination of the propeller and drill arm. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the application of the rock drilling rig slag removal system, which is currently known in the industry.

[0027] Figure 2 This is a schematic diagram illustrating the application of a rock drilling rig slag removal system according to the present invention;

[0028] Figure 3 This is a schematic diagram of a rock drilling rig slag removal system according to the present invention;

[0029] Figure 4This is a schematic diagram of the lower support in a rock drilling rig slag removal system according to the present invention;

[0030] Figure 5 This is a cross-sectional schematic diagram of the lower support in a rock drilling rig slag removal system according to the present invention;

[0031] Figure 6 This is a schematic diagram of the upper support in a rock drilling rig slag removal system according to the present invention;

[0032] Figure 7 This is a cross-sectional schematic diagram of the upper support in a rock drilling rig slag removal system according to the present invention;

[0033] Figure 8 This is a schematic diagram of the slag removal section in a rock drilling rig slag removal system of the present invention;

[0034] Figure 9 This is a schematic diagram of the large-diameter semi-clamp of the slag removal section in a rock drilling rig slag removal system of the present invention;

[0035] Figure 10 This is a schematic diagram of the small-diameter semi-clamp in the slag removal section of a rock drilling rig slag removal system according to the present invention;

[0036] Figure 11 This is a schematic diagram of the slag discharge section cylinder in a rock drilling rig slag discharge system of the present invention;

[0037] Figure 12 This is a schematic diagram of the slag discharge section connecting plate in a rock drilling rig slag discharge system according to the present invention;

[0038] Figure 13 This is a schematic diagram of the slag removal support plate in the slag removal system of a rock drilling rig according to the present invention;

[0039] Figure 14 A schematic diagram of the drill rod of a rock drilling rig;

[0040] Figure 15 This is a schematic diagram of the slag removal system of a rock drilling rig in the present invention, showing the slag removal system in the open state.

[0041] Figure 16 This is a schematic diagram A of the slag removal system of a rock drilling rig according to the present invention;

[0042] Figure 17 This is a schematic diagram (B) of the slag removal system of a rock drilling rig according to the present invention.

[0043] In the diagram: 1. Lower support; 11. Lower plate; 111. Mounting hole A; 12. Lower guide wall; 121. Threaded hole support block; 122. First mounting hole; 123. Bayonet; 124. A guide port; 13. Lower guide plate; 14. Lower connecting pipe; 2. Upper support; 21. Upper plate; 211. Smooth hole support plate; 212. B guide port; 22. Upper guide wall; 23. Upper guide plate; 24. Upper connecting pipe; 3. Slag discharge section; 31. Support plate; 32. Guide support rod; 33. Reset spring; 34. Small diameter half-clamp; 341. Small half-clamp body; 341a. Guide hole of small half-clamp body; 341b. Upper arc surface of small half-clamp body; 341c. Lower arc surface of small half-clamp body; 341d. Clamp rod arc of small half-clamp body; 342 342a. Small half-clamp connecting rod; 35. Threaded section; 36. Large diameter half-clamp; 37. Large half-clamp body; 38. Guide hole of large half-clamp body; 39. Upper arc surface of large half-clamp body; 30. Lower arc surface of large half-clamp body; 31. Arc of large half-clamp body clamping rod; 32. Large half-clamp connecting rod; 33. Threaded section; 34. Hydraulic cylinder; 35. Cylinder barrel; 36. Cylinder rod; 37. Nut; 38. Second mounting hole; 39. Flange; 30. Nut B; 31. Fixing screw C; 32. Connecting plate; 33. Third mounting hole; 34. Fourth mounting hole; 35. Fixing screw A; 36. Fixing screw B; 37. Fixing bolt A; 38. Nut A; 39. Drill rod; 30. Standard section; 31. Upsetting section; 30. Drill bit. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] Example 1

[0048] This invention discloses a rock drilling rig slag removal system, the application of which is as follows: Figure 2 As shown.

[0049] This invention provides a rock drilling rig slag removal system, such as... Figure 3 As shown, it includes a lower support part 1, an upper support part 2, a slag discharge part 3, A fixing screw 4, B fixing screw 5, A fixing bolt 6, and A nut 7; Figure 4 As shown, the lower support 1 includes a lower flat plate 11, a lower guide wall 12, a lower guide plate 13, and a lower connecting pipe 14; Figure 6 As shown, the upper support 2 includes an upper flat plate 21, an upper guide wall 22, an upper guide plate 23, and an upper connecting pipe 24; Figure 8 As shown, the slag discharge section 3 includes a support plate 31, a guide support rod 32, a reset spring 33, a large-diameter half-clamp 35, a small-diameter half-clamp 34, a hydraulic cylinder 36, a B nut 37, a C fixing screw 38, and a connecting plate 39.

[0050] like Figure 3 As shown, the entire slag discharge system is connected to the propeller via A fixing screw 4, the lower support part 1 is connected to the upper support part 2 via B fixing screw 5, and the lower support part 1 is connected to the slag discharge part 3 via A fixing bolt 6 and A nut 7.

[0051] like Figure 4 , Figure 5 As shown, the lower support 1 is welded together from a lower plate 11, a lower guide wall 12, a lower guide plate 13, and a lower connecting pipe 14; the lower plate 11 and the lower guide plate 13 form an angle of 20° to 30°; the upper end face of the lower guide wall 12 is provided with four threaded hole support blocks 121, and has a first mounting hole, a bayonet 123, and an A guide port 124. The A fixing screw passes through the four A mounting holes 111 provided on the lower plate.

[0052] like Figure 6 , Figure 7As shown, the upper support part 2 is welded together from an upper plate 21, an upper guide wall 22, an upper guide plate 23, and an upper connecting pipe 24; the upper plate 21 and the upper guide plate 23 form an angle of 20° to 30°; the upper guide wall has a B guide port 212; the upper plate 21 is provided with four light hole support plates 211, and B fixing bolts pass through the light hole support plates 211 and the threaded hole support block 121 to fix the lower support part 1 and the upper support part 2 relative to each other.

[0053] like Figure 8 As shown, in the slag discharge section 3, the guide support rod 32 passes through the support plate 31, the return spring 33, the large-diameter half-clamp 35, and the small-diameter half-clamp 34, and is fixed relative to the support plate 31 and the guide support rod 32 with the help of the B nut 37; Figure 9 As shown, the large-diameter semi-clamp 35 consists of a large semi-clamp body 351 and a large semi-clamp connecting rod 352. The large semi-clamp body 351 includes a large semi-clamp body guide hole 351a, a large semi-clamp body upper arc surface 351b, a large semi-clamp body lower arc surface 351c, and a large semi-clamp body clamping rod arc 351d; the end of the large semi-clamp connecting rod 352 has a threaded section 352a; as shown... Figure 10 As shown, the small-diameter semi-clamp 34 is composed of a small semi-clamp body 341 and a small semi-clamp connecting rod 342. The small semi-clamp body 341 includes a small semi-clamp body guide hole 341a, a small semi-clamp body upper arc surface 341b, a small semi-clamp body lower arc surface 341c, and a small semi-clamp body clamping rod arc 341d; the end of the small semi-clamp connecting rod 342 has a threaded section 342a; as shown Figure 11 As shown, the hydraulic cylinder 36 consists of a cylinder barrel 361, a cylinder rod 362, and a nut 363. The cylinder barrel 361 has a second mounting hole and a flange 365, and the cylinder rod 362 has threads at its end; Figure 12 As shown, the connecting plate 39 has a third mounting hole and a fourth mounting hole; Figure 8 , Figure 13 As shown, the hydraulic cylinder 36 passes through the light hole 314 of the support plate 31, and the C fixing screw 38 passes through the second mounting hole and is screwed into the threaded hole 315 on the support plate 31 to fix the hydraulic cylinder 36 and the support plate 31 relative to each other. The cylinder rod 362 passes through the fourth mounting hole on the connecting plate 39 and is fixed relative to each other with the B nut 37. The large half-clamp connecting rod 352 on the large diameter half-clamp 35 and the small half-clamp connecting rod 342 on the small diameter half-clamp 34 pass through the fourth mounting hole on the connecting plate 39 respectively and are fixed relative to each other with the B nut 37.

[0054] Example 2

[0055] This embodiment also provides a control method for the rock drilling rig slag removal system as described in any one of Embodiments 1, including:

[0056] like Figures 15-17As shown, the slag discharge system includes two states: guided and open, achieved through the cooperation of hydraulic cylinder 36 and return spring 33. When hydraulic cylinder 36 extends, the cylinder rod 362 moves the connecting plate 39, which in turn pushes nut B 37, causing the large-diameter half-clamp 35 and the small-diameter half-clamp 34 to move. When hydraulic cylinder 36 retracts, the cylinder rod 362 moves the connecting plate 39, and under the action of return spring 33, the large-diameter half-clamp 35 and the small-diameter half-clamp 34 move towards the center of the slag discharge system. When hydraulic cylinder 36 is fully retracted, if the large-diameter half-clamp 35 and the small-diameter half-clamp 34 are subjected to an outward thrust, they will overcome the spring force of the return spring and move along the guide support rod 32 away from the center of the slag discharge system.

[0057] like Figure 2 , Figure 3 , Figure 8 , Figure 14 , Figure 16 , Figure 17 As shown, during drilling, the control cylinder 36 is in a fully retracted state. Under the action of the return spring 33, the two large-diameter half-clamps 35 are in contact with each other, and the two small-diameter half-clamps 34 are in contact with each other. During the process of passing through the slag removal system in the standard section 81 and the upsetting section 82, at least one of the large half-clamp body rod arcs 351d and the small half-clamp body rod arcs 341d can be well contacted with the drill rod; a portion of the suspension flowing out of the hole The liquid enters the upper support section 2 and is discharged from the B guide port 212 under the action of the upper guide wall 22, the upper guide plate 23, and the upper connecting pipe 24. Other suspensions enter the lower support section 1 and are blocked by the large half-clamp 351 or the small half-clamp 341. They flow down along the upper arc surface 351b of the large half-clamp 351 or the upper arc surface 341b of the small half-clamp and are discharged from the A guide port 124 under the action of the lower guide wall 12, the lower guide plate 13, and the lower connecting pipe 14.

[0058] like Figure 14 , Figure 15 As shown, when the drill bit needs to pass through the slag removal system or the upsetting section 82 of the drill rod needs to pass through the slag removal system during the process of unloading the drill rod 8, the control cylinder 36 is in the fully extended state, and the distance between the two large-diameter half-clamps 35 and the distance between the two small-diameter half-clamps 34 are at their maximum values, leaving enough space for the drill bit or the upsetting section of the drill rod to pass through.

[0059] The beneficial effects achieved by this invention are as follows:

[0060] 1. During the drilling process, such as Figure 2 , Figure 3 , Figure 8 , Figure 16 , Figure 17As shown, a portion of the suspended liquid flowing out of the hole enters the upper support section 2 and is discharged from the B guide port 212 under the action of the upper guide wall 22, the upper guide plate 23, and the upper connecting pipe 24; the other suspended liquid enters the lower support section 1 and, due to being blocked by the large half-clamp 351 or the small half-clamp 341, flows down along the upper arc surface 351b of the large half-clamp 351 or the upper arc surface 341b of the small half-clamp 341, and is discharged from the A guide port 124 under the action of the lower guide wall 12, the lower guide plate 13, and the lower connecting pipe 14; the suspended liquid is guided and discharged in a concentrated manner, which will not damage the components inside the thruster, and at the same time avoids contamination of the thruster and the drill arm.

[0061] 2. During the drilling process, if Figure 16 , Figure 17 As shown, at the connection point of the two drill pipes, the area where the upset section connects to the standard section has a relatively large diameter difference. With a set of large-diameter half-clamps 35 on top and a set of small-diameter half-clamps 34 on the bottom, it can ensure that at least one of the set of large half-clamps body rod arc 351d and the set of small half-clamps body rod arc 341d fits well with the drill pipe, preventing the suspended liquid from entering the propeller, effectively avoiding damage to the components inside the propeller, and at the same time avoiding contamination of the propeller and drill arm.

[0062] 3. During the drilling process, if Figure 16 , Figure 17 As shown, drill pipe swaying is inevitable due to uneven geological conditions. The reset spring 33 can ensure that at least one of the large half-clamping rod arc 351d and the small half-clamping rod arc 341d is in good contact with the drill pipe, preventing the suspended liquid from entering the thruster, effectively avoiding damage to the components inside the thruster, and at the same time avoiding contamination of the thruster and drill arm.

[0063] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A jumbo draw system, characterized in that, The system includes a drill pipe (8) and a slag removal mechanism mounted on the drill pipe (8). The slag removal mechanism includes an upper support (2), a lower support (1), and a slag removal part (3). The slag removal part (3) is located between the upper support (2) and the lower support (1). The lower support part (1) includes a lower plate (11), a lower guide wall (12), a lower guide plate (13), a lower connecting pipe (14), and an A guide port (124). The lower guide wall (12) is arranged around the lower plate (11), and the A guide port (124) is opened on the lower guide wall (12). The lower guide plate (13) is arranged on the lower plate (11), and the lower guide plate (13) is inclined downward towards the A guide port (124). The lower connecting pipe (14) passes through the lower plate (11) and the lower guide plate (13). The structure of the upper support part (2) is the same as that of the lower support part (1). The upper support part (2) includes an upper plate (21), an upper guide wall (22), an upper guide plate (23), an upper connecting pipe (24), and a B guide port (212). The slag discharge section (3) includes two sets of large-diameter semi-clamps (35) and two sets of small-diameter semi-clamps (34) arranged on the lower guide wall (12). The two sets of large-diameter semi-clamps (35) are combined into a ring shape, and the two sets of small-diameter semi-clamps (34) are combined into a ring shape. The drill pipe (8) passes through the upper connecting pipe (24), the large-diameter half-clamp (35), the small-diameter half-clamp (34) and the lower connecting pipe (14) in sequence.

2. The rock drilling rig slag removal system according to claim 1, characterized in that, The slag discharge section (3) also includes two sets of support plates (31), multiple sets of guide support rods (32), two sets of oil cylinders, and two sets of connecting plates (39). The two sets of support plates (31) are symmetrically arranged on the lower guide wall (12). The two sets of oil cylinders are respectively installed on the support plates (31) on both sides, and the output ends of the two sets of oil cylinders are arranged in opposite directions. The output ends of the two sets of oil cylinders pass through the support plates (31) and are connected to the connecting plates (39). The large-diameter half-clamps (35) and small-diameter half-clamps (34) are installed on the two sets of connecting plates (39). The two ends of the multiple sets of guide support rods (32) are respectively fixed on the support plates (31) on both sides, and the multiple sets of guide support rods (32) pass through the large-diameter half-clamps (35) and small-diameter half-clamps (34) respectively, so that the large-diameter half-clamps (35) and small-diameter half-clamps (34) slide on the guide support rods (32).

3. The rock drilling rig slag removal system according to claim 2, characterized in that, The slag discharge section (3) also includes multiple sets of return springs (33). The multiple sets of return springs (33) are respectively installed between the support plate (31) and the large diameter half-clamp (35), and between the support plate (31) and the small diameter half-clamp (34). The multiple sets of return springs (33) are respectively sleeved on the guide support rod (32), and the multiple sets of return springs (33) apply an inward preload force to the large diameter half-clamp (35) and the small diameter half-clamp (34).

4. The rock drilling rig slag removal system according to claim 2, characterized in that, The large-diameter half-clamp (35) includes a large half-clamp body (351) and a large half-clamp connecting rod (352) connected to each other. The end of the large half-clamp connecting rod (352) away from the large half-clamp body (351) is connected to the connecting plate (39). The large half-clamp body (351) includes a large half-clamp body guide hole (351a), a large half-clamp body upper arc surface (351b), a large half-clamp body lower arc surface (351c), and a large half-clamp body clamping rod arc (351d). The guide support rod (32) passes through the large half-clamp body guide hole (351a). The large half-clamp body upper arc surface (351b) and large half-clamp body lower arc surface (351c) are located on the upper end face and lower end face of the large half-clamp body (351), respectively. The large half-clamp body clamping rod arc (351d) is opened on the inner side of the large half-clamp body (351) and fits against the drill rod (8).

5. The rock drilling rig slag removal system according to claim 4, characterized in that, The structure of the small-diameter half-card (34) is the same as that of the large-diameter half-card (35), and the diameter of the small-diameter half-card (34) is smaller than that of the large-diameter half-card (35).

6. The rock drilling rig slag removal system according to claim 1, characterized in that, The large-diameter half-clamp (35) and the small-diameter half-clamp (34) are respectively interference-fitted with the upsetting section (82) and the standard section (81) of the drill pipe (8).

7. The rock drilling rig slag removal system according to claim 1, characterized in that, The lower plate (11) and the lower guide plate (13) form an angle of 20° to 30°, and the upper plate (21) and the upper guide plate (23) form an angle of 20° to 30°.

8. A control method, characterized in that, The control method applicable to the rock drilling rig slag removal system according to any one of claims 1-7 includes: During drilling, the control cylinder is in a fully retracted state, with the two large-diameter half-clamps (35) and the two small-diameter half-clamps (34) in contact with each other. During the process of the drill rod (8) passing through the slag discharge mechanism in the standard section (81) and upsetting section (82), at least one set of the large-diameter half-clamps (35) or small-diameter half-clamps (34) can be well contacted with the drill rod (8). Part of the suspension flowing out of the hole enters the upper support part (2) and flows through the upper guide wall. (22) Under the action of the upper guide plate (23) and the upper connecting pipe (24), it is discharged from the B guide port (212); other suspensions enter the lower support part (1), and are blocked by the large diameter half-clamp (35) or the small diameter half-clamp (34), and flow down along the large diameter half-clamp (35) or the small diameter half-clamp (34), and are discharged from the A guide port (124) under the action of the lower guide wall (12), the lower guide plate (13) and the lower connecting pipe (14).

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