An impact barrel drill and a rotary drilling rig comprising the same

Abstract

The application discloses an impact cylinder drill and a rotary drilling rig comprising the same, and belongs to the technical field of engineering machinery, which comprises a connecting side, a cylinder, a cutting part arranged at the first end of the cylinder, a middle shaft group arranged between the connecting side and the cylinder and used for connecting the second end of the cylinder and the connecting side, a top plate cover arranged at the upper end of the cylinder and sleeved outside the middle shaft group, a stop mechanism abutting against a hole wall and matched with the top plate cover to ensure that the top plate cover cannot rotate with the cylinder, and an impact mechanism arranged in the top plate cover and matched with the cylinder to enable the rotating cylinder to generate periodic up-down vibration impact force. The stop mechanism and the impact mechanism are arranged to enable the cylinder to generate periodic vibration impact force in the rotating process, an impact drilling type cylinder drill is formed, and the drilling and hole forming efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to an impact drill and a rotary drilling rig containing the same. Background Technology

[0002] When rotary drilling rigs are drilling, they often encounter hard rock, especially in pebble strata or areas with many underground obstacles. In order to improve drilling ability and reduce drill bit wear, several cutting teeth or roller cone teeth are provided on the drill bit. Since the diameter of the drill barrel is 1-2m, the drilling speed is slow when encountering rocks with high saturated uniaxial compressive strength. It often takes 2-3 hours to drill 1m, and the cutting tools wear out quickly. Sometimes it is even difficult to drill, resulting in low drilling efficiency and high construction costs. Summary of the Invention

[0003] To solve the above problems, the present invention adopts the following technical solution:

[0004] An impact drill bit, comprising:

[0005] Connector;

[0006] A cylindrical body, wherein a cutting section is provided at the first end of the cylindrical body;

[0007] A central shaft assembly located between the connecting element and the cylinder, the central shaft assembly being used for the connection between the second end of the cylinder and the connecting element;

[0008] A top cover, which is located at the upper end of the cylinder and is fitted onto the outside of the central shaft assembly;

[0009] A stop mechanism is provided, which abuts against the hole wall and cooperates with the top plate cover to ensure that the top plate cover does not rotate with the cylinder.

[0010] An impact mechanism is located inside the top cover and cooperates with the cylinder to enable the rotating cylinder to generate periodic up-and-down vibration impact force.

[0011] Furthermore, the impact mechanism includes a movable gear plate, multiple spring columns, and multiple impact springs;

[0012] The movable gear plate is located inside the top cover and is slidably sleeved on the outside of the central shaft assembly; wherein, the first end of the movable gear plate is provided with a plurality of first teeth, and the second end of the cylinder is provided with a plurality of second teeth corresponding to the first teeth, the first teeth and the second teeth cooperating to cause the rotating cylinder to produce periodic up and down vibration;

[0013] Multiple spring posts are evenly arranged around the circumference of the movable gear plate. The first end of the spring post is fixedly connected to the second end of the movable gear plate. The second end of the spring post extends to the outside of the top plate cover and is fixed to the top plate cover by a spring pressure plate.

[0014] Multiple impact springs are arranged in a one-to-one correspondence with multiple spring posts. The impact springs are sleeved on the outside of the spring posts, and the two ends of the impact springs abut against the second end surface of the movable gear plate and the inner surface of the top cover, respectively. The impact springs are used to provide the impact force for the rotating cylinder to vibrate up and down.

[0015] Furthermore, the mating surfaces of the first tooth and the second tooth are both inclined surfaces, wherein the included angles of inclination of the mating inclined surfaces of the first tooth and the second tooth are complementary.

[0016] Furthermore, the number of the first tooth and the second tooth is 50, and they are arranged evenly and closely adjacent to each other along the circumference of the movable gear plate and the cylinder.

[0017] Furthermore, the number of spring posts is four, and the four spring posts are evenly arranged around the circumference of the movable gear plate.

[0018] Furthermore, the stopping mechanism includes multiple stop blades, multiple support rods, and multiple pressure springs, with each of the multiple stop blades, support rods, and pressure springs arranged in a one-to-one correspondence. A first support seat and a second support seat are provided corresponding to each support rod, and the first and second support seats are fixedly connected to the second end surface of the movable gear plate. The support rod is slidably mounted on the first and second support seats. The first end of the support rod is fixedly connected to the stop blade. A pressure plate is fixedly mounted on the portion of the support rod located between the first and second support seats, with the pressure plate located on the side closer to the first support seat. The pressure spring is located between the pressure plate and the second support seat and is sleeved on the outside of the support rod. The stop blade passes through the top plate cover and abuts against the hole wall.

[0019] Furthermore, the number of the stop knife, the support rod, and the pressure spring are all four, and they are evenly arranged along the circumference of the top plate cover.

[0020] Furthermore, the cutting portion of the cylinder consists of multiple alloy cutting teeth that are uniformly arranged along the circumference of the cylinder and fixedly installed on the cylinder.

[0021] A rotary drilling rig, comprising the impact drill as described in any of the preceding claims.

[0022] Beneficial effects:

[0023] The present invention provides an impact drill barrel, which, by setting a stop mechanism and an impact mechanism, enables the barrel to generate periodic vibration impact force during rotation, thus forming an impact drill barrel and improving drilling efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is another perspective on the overall structure of the present invention;

[0026] Figure 3 This is a front view of the overall structure of the present invention;

[0027] Figure 4 for Figure 3 Sectional view of AA;

[0028] Figure 5 This is a schematic diagram of the overall structure of the present invention (excluding the top cover);

[0029] Figure 6 A front view of the overall structure of the present invention (excluding the top cover);

[0030] Figure 7 for Figure 6 BB section view;

[0031] Figure 8 This is a schematic diagram of the overall structure of the present invention (excluding the cylindrical body);

[0032] Figure 9 This is another perspective on the overall structure of the present invention (excluding the cylindrical body);

[0033] Figure 10 This is a front view of the overall structure of the present invention (excluding the cylinder);

[0034] Figure 11 for Figure 10 CC section view;

[0035] Figure 12 This is a structural schematic diagram of the top cover;

[0036] Figure 13 Another perspective of the roof cover;

[0037] Figure 14 This is a schematic diagram of the cylinder structure;

[0038] The components are as follows: 1. Cylinder body; 2. Top cover; 3. Stop knife; 4. Connecting square; 5. Spring column; 6. Spring pressure plate; 7. Stop port; 8. Mounting seat; 9. Second tooth; 10. Movable gear plate; 11. Support rod; 12. Pressure spring; 13. Impact spring; 14. First tooth; 15. First support seat; 16. Second support seat; 17. Pressure plate. Detailed Implementation

[0039] Example 1

[0040] refer to Figure 1-3 An impact drill bit, comprising:

[0041] Connector 4;

[0042] Cylinder 1, with a cutting section provided at the first end of cylinder 1;

[0043] A central shaft assembly is located between the connecting unit 4 and the cylinder 1. The central shaft assembly is used for the connection between the second end of the cylinder 1 and the connecting unit 4.

[0044] Top cover 2, located at the upper end of cylinder 1, and sleeved on the outside of the central shaft assembly;

[0045] The stop mechanism abuts against the bore wall and cooperates with the top cover 2 to ensure that the top cover 2 does not rotate with the cylinder 1.

[0046] The impact mechanism is located inside the top cover 2. The impact mechanism works in conjunction with the cylinder 1 to enable the rotating cylinder 1 to generate periodic up-and-down vibration impact force.

[0047] This embodiment enables the cylinder to generate periodic vibration and impact forces during rotation by setting a stop mechanism and an impact mechanism.

[0048] Example 2

[0049] refer to Figure 3-14 This embodiment further refines the stop mechanism and impact mechanism based on embodiment 1.

[0050] In this embodiment, the impact mechanism includes a movable gear plate 10, a plurality of spring pins 5, and a plurality of impact springs 13.

[0051] The movable gear plate 10 is located inside the top cover 2 and is slidably sleeved on the outside of the central shaft assembly; wherein, the first end of the movable gear plate 10 is provided with a plurality of first teeth 14, and the second end of the cylinder 1 is provided with a plurality of second teeth 9 corresponding to the first teeth 14. The first teeth 14 and the second teeth 9 cooperate to make the rotating cylinder 1 generate periodic up and down vibration.

[0052] Multiple spring columns 5 are evenly arranged around the movable gear plate 10. The first end of the spring column 5 is fixedly connected to the second end of the movable gear plate 10. The second end of the spring column 5 extends to the outside of the top plate cover 2 and is fixed to the top plate cover 2 by the spring pressure plate 6.

[0053] Multiple impact springs 13 are arranged in a one-to-one correspondence with multiple spring posts 5. The impact springs 13 are sleeved on the outside of the spring posts 5, and the two ends of the impact springs 13 abut against the second end surface of the movable gear plate 10 and the inner surface of the top cover 2, respectively. The impact springs 13 are used to provide the impact force for the rotating cylinder 1 to vibrate up and down.

[0054] In this embodiment, the mating surfaces of the first tooth 14 and the second tooth 9 are both inclined surfaces, wherein the angles of inclination of the mating inclined surface of the first tooth 14 and the mating inclined surface of the second tooth 9 are complementary.

[0055] Among them, the inclination direction of the mating inclined surface of the first tooth 14 is related to the rotation direction of the cylinder. In the rotation direction of the cylinder, the bottom end of the first tooth 14 transitions to the upper end; the inclination direction of the mating inclined surface of the second tooth 9 is opposite to that of the first tooth 14.

[0056] In this embodiment, there are 50 first teeth 14 and 50 second teeth 9, which are evenly and closely arranged adjacent to each other along the circumference of the movable gear plate 10 and the cylinder 1.

[0057] In this embodiment, there are four spring posts 5, which are evenly arranged around the movable gear plate 10.

[0058] Each pressure spring 12 can provide a maximum impact force of 500 kg, and four pressure springs 12 can achieve an impact force of 2 tons.

[0059] In this embodiment, the cylinder 1 rotates at 15 rpm per minute. With each rotation, the first tooth 14 and the second tooth 9 work together to achieve up-and-down vibration 50 times. At the same time, all 50 teeth rotate and wear simultaneously, which can extend the service life of the first tooth 14 and the second tooth 9.

[0060] In this embodiment, the stopping mechanism includes multiple stop blades 3, multiple support rods 11, and multiple pressure springs 12, which are arranged in a one-to-one correspondence. A first support seat 15 and a second support seat 16 are provided corresponding to the support rods 11, and the first support seat 15 and the second support seat 16 are fixedly connected to the second end surface of the movable gear plate 10. The support rods 11 are slidably mounted on the first support seats 15 and the second support seats 16. The first end of the support rod 11 is fixedly connected to the stop blades 3. A pressure plate 17 is fixedly provided on the part of the support rod 11 located between the first support seats 15 and the second support seats 16. The pressure plate 17 is located on the side closer to the first support seat 15. The pressure springs 12 are located between the pressure plate 17 and the second support seats 16 and are sleeved on the outside of the support rod 11. The stop blades 3 pass through the top cover 2 and abut against the hole wall.

[0061] In this embodiment, there are four stop blades 3, four support rods 11, and four pressure springs 12, which are evenly arranged around the top cover 2.

[0062] In this embodiment, the top cover 2 is provided with 4 stop holes 7, and the stop knife 3 passes through the stop holes 7 and abuts against the hole wall.

[0063] In this embodiment, the stop knife 3 has an arc-shaped structure, which can achieve radial limiting of the top plate cover 2.

[0064] The impact drill provided in this embodiment, through the cooperation of the first and second teeth, enables the cylinder to generate periodic up-and-down vibrations during rotation; the four pressure springs 12 provide the impact force for the rotating cylinder to generate up-and-down vibrations, forming an impact drill-type drill, which improves drilling efficiency.

[0065] Example 3

[0066] To further improve the efficiency of rotary drilling, this embodiment makes further modifications based on embodiment 2.

[0067] In this embodiment, the cutting part of the cylinder 1 consists of multiple alloy cutting teeth that are uniformly arranged around the circumference of the cylinder 1 and fixedly installed on the cylinder 1.

[0068] In this embodiment, the first end of the cylinder 1 is provided with 20 mounting seats 8, and the mounting seats 8 are used to fix and install alloy cutting teeth. A 10-15 ton hydraulic power head is driven and connected to the connecting unit 4. The 10-15 ton hydraulic power is distributed at the tips of the 20 alloy cutting teeth.

[0069] Example 4

[0070] A rotary drilling rig includes the impact drill provided in any one of embodiments 1 to 3.

[0071] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A percussion cylinder drill, characterized in that, The utility model relates to a cutting device, including: a connecting part; a barrel, the first end of the barrel is provided with a cutting part; a middle shaft group between the connecting part and the barrel, the middle shaft group is used for the connection between the second end of the barrel and the connecting part; a top cover, the top cover is located at the upper end of the barrel and is sleeved outside the middle shaft group; a stop mechanism, the stop mechanism abuts on the hole wall and cooperates with the top cover to ensure that the top cover cannot rotate with the barrel; an impact mechanism, the impact mechanism is located in the top cover and cooperates with the barrel to enable the rotating barrel to generate periodic up-down vibration impact force; the impact mechanism includes a movable gear plate, a plurality of spring columns and a plurality of impact springs; the movable gear plate is located in the top cover and is slidably sleeved outside the middle shaft group;Wherein, the first end of the movable gear plate is provided with a plurality of first teeth, the second end of the barrel is provided with a plurality of second teeth corresponding to the first teeth, the first teeth and the second teeth cooperate to make the rotating barrel generate periodic up-down vibration; a plurality of spring columns are uniformly arranged along the circumference of the movable gear plate, the first end of the spring column is fixedly connected with the second end of the movable gear plate, and the second end of the spring column extends to the outside of the top cover and fixes the top cover through the spring pressing plate; a plurality of impact springs are provided one by one with a plurality of spring columns, wherein the impact spring is sleeved outside the spring column, the two ends of the impact spring abut on the second end surface of the movable gear plate and the inner surface of the top cover respectively, and the impact spring is used to provide the rotating barrel with up-down vibration impact force; the stop mechanism includes a plurality of stop knives, a plurality of supporting rods and a plurality of pressure springs, and a plurality of stop knives, a plurality of supporting rods and a plurality of pressure springs are provided one by one;With the supporting rod, a first supporting seat and a second supporting seat are provided, and the first supporting seat and the second supporting seat are fixedly connected to the second end surface of the movable gear plate;The supporting rod is slidably installed on the first supporting seat and the second supporting seat;Wherein, the first end of the supporting rod is fixedly connected with the stop knife;The part of the supporting rod between the first supporting seat and the second supporting seat is provided with a pressure plate, the pressure plate is located on the side close to the first supporting seat, the pressure spring is located between the pressure plate and the second supporting seat and is sleeved outside the supporting rod;The stop knife passes through the top cover and abuts on the hole wall;The stop knife is arc-shaped structure, for realizing the radial location of the top cover; the top cover is provided with four stop ports, and the stop knife passes through the stop port and abuts on the hole wall.

2. The impact bit of claim 1 wherein, The cooperation surface of the first tooth and the second tooth is inclined surface, wherein the inclination angle of the cooperation inclined surface of the first tooth and the cooperation inclined surface of the second tooth is complementary.

3. The impact bit of claim 2 wherein, The number of the first tooth and the second tooth is 50, and they are uniformly and closely arranged along the circumference of the movable gear plate and the barrel.

4. The impact bit of claim 1 wherein, The number of the spring columns is 4, and the 4 spring columns are uniformly arranged along the circumference of the movable gear plate.

5. The impact bit of claim 1 wherein, The number of the stopper knives, the support rods and the pressure springs is 4, and the 4 stopper knives, the 4 support rods and the 4 pressure springs are uniformly arranged along the circumference of the top plate cover.

6. The impact bit of claim 1 wherein, The cutting parts of the barrel are a plurality of alloy cutting picks which are uniformly arranged along the circumference of the barrel and fixedly installed on the barrel.

7. A rotary drilling rig, characterized by The impact barrel drill comprises the impact barrel drill according to any one of claims 1 to 6.

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