Rapid slag discharging device of rotary drilling rig

Abstract

The invention relates to the technical field of rotary drilling rigs, and discloses a rotary drilling rig quick slag discharging device which comprises a power head, a drilling barrel is arranged on the lower side of the power head, an insertion shaft is inserted into the power head, the bottom end of the insertion shaft is coaxially connected with the top of the drilling barrel, and the outer side of the top of the drilling barrel is connected with a mounting cover; a main round hole is circumferentially formed in the top of the drill cylinder, a main push rod is inserted in the main round hole, and the top end of the main push rod is connected with a pressure plate; grooves are formed in the corresponding positions of the two sides in the power head, the two ends of the first spring are connected with the pressing disc and the top of the drilling barrel respectively, and the top end of the inserting shaft is coaxially connected with the flange. When the device discharges slag, the drill barrel is longitudinally lifted to the position below the power head, the pressing disc extrudes the spring, the main push rod penetrates through the main round hole to make contact with rock, continuous pushing force enables the rock to be separated from the drill barrel, quick slag discharging is achieved, construction efficiency is improved, waiting time is shortened, noise is lowered, and the device is suitable for urban construction areas.

Description

Technical Field

[0001] This invention relates to the field of rotary drilling rig technology, specifically to a rapid slag unloading device for rotary drilling rigs. Background Technology

[0002] In the field of civil engineering, rotary drilling rigs have become indispensable drilling equipment in projects such as bridge pile foundations and deep foundation pit retaining structures due to their high efficiency and precision. Their core working principle involves a cylindrical drill bit (drill bucket) with a valve at the bottom rotating to break up rock and soil. The broken soil is then loaded into the drill bucket and lifted out of the hole for discharge, and this cycle continues until the designed depth is reached.

[0003] In soft soil construction, rotary drilling rigs typically unload excavated soil by opening and closing a folding plate at the bottom of the drill barrel, utilizing the soil's own weight. This method is relatively quick in soft soil layers. However, in hard rock formations, where the drill barrel is filled with hard rock and the friction between the rock and the drill bit is significant, the rock cannot be detached from the drill barrel by its own weight alone. In such cases, rotary drilling rig operators often use a bucket-swinging method for unloading. However, this method generates considerable noise and takes a long time, which can easily lead to complaints in urban construction. Furthermore, frequent bucket-swinging causes significant damage to the machinery, requiring frequent maintenance and severely impacting the normal progress of the project. This method does not meet the operational requirements of rotary drilling rigs. Therefore, a rapid excavation unloading device for rotary drilling rigs is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rapid slag unloading device for rotary drilling rigs, which solves the technical problems of high noise and long unloading time during the slag unloading process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid slag unloading device for rotary drilling rigs, comprising: A power head is provided, with a drill barrel installed on its lower side. A shaft is inserted inside the power head, and the bottom end of the shaft is coaxially connected to the top of the drill barrel at a corresponding position. A mounting cover is connected to the outer side of the top of the drill barrel. The main circular hole is circumferentially opened at the top of the drill barrel. A main push rod is inserted into the inside of the main circular hole. A pressure plate is connected to the top of the main push rod. A first spring is sleeved on the outside of the main push rod at the position between the pressure plate and the top of the drill barrel. The protruding strips are installed on both sides of the outer side of the insert shaft. The inner sides of the power head are provided with grooves corresponding to the protruding strips. The upper and lower ends of the first spring are respectively connected to the top of the pressure plate and the top of the drill barrel. The top end of the insert shaft is coaxially connected to a flange.

[0006] Preferably, the number of main circular holes is set to at least 3 sets, the bottom end of each main push rod is chamfered, the insert shaft penetrates the interior of the pressure plate, the height of the main push rod is greater than the height of the mounting cover, the main circular holes are set to at least three sets and the bottom end of the main push rod is chamfered, and the design of the insert shaft penetrating the pressure plate can discharge slag from multiple angles efficiently, avoid jamming and improve the smoothness of slag discharge.

[0007] Preferably, a motor is installed on the outer side of the mounting cover, and a gear is coaxially connected to the outer end of the rotor of the motor. An assembly ring is inserted into the middle of the inner wall of the mounting cover, and a secondary push rod is inserted circumferentially inside the assembly ring. The motor is installed on the side of the mounting cover, and the gear drives the secondary push rod inside the assembly ring to provide additional power for slag unloading, enhance the slag unloading capacity, and adapt to different working conditions.

[0008] Preferably, the top of the drill barrel and the position corresponding to the auxiliary push rod are both provided with auxiliary circular holes. The bottom end of the auxiliary push rod passes through the interior of the auxiliary circular hole, and the top end of the auxiliary push rod is equipped with a ball head. The auxiliary circular hole in the drill barrel and the auxiliary push rod passing through and having a ball head at the top end make the auxiliary push rod move more flexibly, reduce friction, and can better penetrate into the slag and improve the slag unloading effect.

[0009] Preferably, a disc is fitted around the outside of the auxiliary push rod at the position below the assembly ring, and a second spring is fitted around the outside of the auxiliary push rod at the position below the disc. The upper and lower ends of the second spring are respectively connected to the corresponding positions of the top of the disc and the top of the drill barrel. The disc and the second spring are fitted on the auxiliary push rod, and the spring force is used to assist in slag discharge, which can buffer vibration, stabilize the auxiliary push rod, and improve the stability and reliability of slag discharge.

[0010] Preferably, the upper inner wall of the mounting cover is provided with a slot, and a transmission ring is inserted into the slot. A toothed ring is connected to the upper surface of the transmission ring, and the toothed ring meshes with a gear. The transmission ring is inserted into the slot inside the mounting cover. Through the meshing of the toothed ring and the gear, power can be transmitted accurately, making the transmission smooth and ensuring that all components of the slag unloading device work together efficiently.

[0011] Preferably, the lower surface of the transmission ring is circumferentially provided with protrusions, and the number of protrusions is at least three sets. The bottom of each protrusion is a spherical structure. The groove and the transmission ring are filled with lubricant. The multiple sets of spherical protrusions on the lower surface of the transmission ring and the lubricant filling can reduce friction with the groove, reduce wear, extend the service life of the component, and ensure smooth and unobstructed transmission.

[0012] Preferably, an annular reinforcing rib is installed on the top outer side of the drill barrel below the mounting cover. The annular reinforcing rib has an L-shaped cross-section. The horizontal part of the annular reinforcing rib is welded and fixed to the outer wall of the drill barrel, and the vertical part of the annular reinforcing rib extends outward. The L-shaped annular reinforcing rib on the outer side of the drill barrel, with the horizontal part welded to the vertical part extending outward, enhances the overall strength of the drill barrel, enabling it to withstand greater external forces and ensuring structural stability during slag unloading.

[0013] Preferably, both the main circular hole and the auxiliary circular hole are provided with guide openings at their upper and lower ends. The guide openings are all flared, with a cone angle of at least 120 degrees. The inner wall of the guide opening is polished with a transition surface. The flared guide openings at the upper and lower ends of the main and auxiliary circular holes and the transition surface on the inner wall can guide the push rod to enter and exit smoothly, avoid collision damage, and improve the durability of the device.

[0014] Preferably, the diameters of the main circular hole and the secondary circular hole are both larger than the diameters of the main push rod and the secondary push rod, and the bottom end of the secondary push rod is provided with a tapered head.

[0015] Compared with the prior art, the present invention provides a rapid slag unloading device for rotary drilling rigs, which has the following beneficial effects: This rotary drilling rig's rapid slag unloading device, through the addition of a main push rod, allows the drill barrel to be lifted longitudinally during slag unloading. When it is lifted below the power head, the pressure plate compresses the spring, causing the main push rod to pass through the pre-drilled main hole at the top of the drill barrel and contact the rock. The continuous thrust of the main push rod gradually detaches the rock from the drill barrel, achieving rapid slag unloading. This improves overall construction efficiency, effectively reduces the waiting time of the equipment during the slag unloading process, avoids violent collisions, effectively reduces construction noise, creates a more comfortable working environment for construction personnel, and reduces interference with the lives of surrounding residents. It is especially suitable for urban construction areas with high noise control requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic cross-sectional view of the power head structure of the present invention; Figure 3 This is a schematic diagram of the mounting cover structure of the present invention; Figure 4 This is a schematic diagram of the top structure of the drill barrel of the present invention; Figure 5 This is a schematic cross-sectional view of the mounting cover structure of the present invention; Figure 6 This is a schematic diagram of the assembly ring structure of the present invention; Figure 7 This is a bottom view of a partial structure of the assembly ring of the present invention; Figure 8 This is an exploded view of the toothed ring structure of the present invention.

[0017] In the diagram: 1. Power head; 2. Drill barrel; 3. Insert shaft; 4. Mounting cover; 5. Main circular hole; 6. Secondary circular hole; 7. Main push rod; 8. Pressure plate; 9. First spring; 10. Motor; 11. Gear; 12. Assembly ring; 13. Secondary push rod; 14. Ball head; 15. Second spring; 16. Disc; 17. Slot; 18. Transmission ring; 19. Protrusion; 20. Gear ring; 21. Protrusion; 22. Flange. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a rapid slag unloading device for a rotary drilling rig, comprising a power head 1, a drill barrel 2, a shaft insert 3, a mounting cover 4, a main circular hole 5, a secondary circular hole 6, a main push rod 7, a pressure plate 8, a first spring 9, a motor 10, a gear 11, an assembly ring 12, a secondary push rod 13, a ball head 14, a second spring 15, a disc 16, a groove 17, a transmission ring 18, a protrusion 19, a gear ring 20, a protruding strip 21, and a flange 22. Please see Figure 1 The drill barrel 2 is installed on the lower side of the power head 1. Please refer to [link / reference]. Figure 2 The power head 1 has an insert shaft 3 inserted inside. The bottom end of the insert shaft 3 is coaxially connected to the corresponding position on the top of the drill barrel 2. Please refer to [link / reference]. Figure 1 A mounting cover 4 is connected to the top outer side of the drill barrel 2; Please see Figure 4 The main circular hole 5 is circumferentially opened at the top of the drill barrel 2. The main push rod 7 is inserted inside the main circular hole 5. The top of the main push rod 7 is connected to the pressure plate 8. The first spring 9 is sleeved on the outside of the main push rod 7 at the position between the pressure plate 8 and the top of the drill barrel 2. Please see Figure 2 The protrusion 21 is installed on both sides of the outside of the insert shaft 3. The inside of the power head 1 has grooves at the corresponding positions of the protrusion 21. The upper and lower ends of the first spring 9 are respectively connected to the pressure plate 8 and the top of the drill barrel 2. The top of the insert shaft 3 is coaxially connected to the flange 22. By adding the main push rod 7, the drill barrel 2 can be lifted longitudinally during slag unloading. When it is lifted below the power head 1, the pressure plate 8 will squeeze the first spring 9, causing the main push rod 7 to pass through the pre-reserved main circular hole 5 at the top of the drill barrel 2 and contact the rock. Thus, the continuous thrust of the main push rod 7 can gradually detach the rock from the drill barrel 2, achieving rapid slag unloading, improving overall construction efficiency, effectively reducing the waiting time of the equipment in the slag unloading stage, avoiding violent collisions, effectively reducing construction noise, creating a more comfortable working environment for construction personnel, and reducing interference with the lives of surrounding residents. It is especially suitable for urban construction areas with high noise control requirements. Please see Figure 4 The number of main circular holes 5 is set to at least 3 sets. The bottom end of each main push rod 7 is chamfered. The insert shaft 3 penetrates the interior of the pressure plate 8. The height of the main push rod 7 is greater than the height of the mounting cover 4. Please refer to [link / reference]. Figure 3 A motor 10 is mounted on the outer side of the mounting cover 4. A gear 11 is coaxially connected to the outer end of the rotor of the motor 10. Please refer to [link / reference]. Figure 5 An assembly ring 12 is inserted into the center of the inner wall of the mounting cover 4. A secondary push rod 13 is inserted circumferentially inside the assembly ring 12. A secondary circular hole 6 is opened at the top of the drill barrel 2 at a position corresponding to the secondary push rod 13. The bottom end of the secondary push rod 13 passes through the interior of the secondary circular hole 6. Please refer to [link / reference]. Figure 6 and Figure 7 The top of the auxiliary pusher 13 is equipped with a ball head 14; A disc 16 is fitted around the outside of the auxiliary push rod 13, located below the assembly ring 12. A second spring 15 is fitted around the outside of the auxiliary push rod 13, located below the disc 16. The upper and lower ends of the second spring 15 are connected to the disc 16 and the corresponding positions on the top of the drill barrel 2, respectively. Please refer to [link / reference]. Figure 8 The upper side of the inner wall of the mounting cover 4 is provided with a slot 17, and a transmission ring 18 is inserted inside the slot 17. A toothed ring 20 is connected to the upper surface of the transmission ring 18, and the toothed ring 20 meshes with the gear 11. The lower surface of the transmission ring 18 is circumferentially provided with protrusions 19. The number of protrusions 19 is set to at least 3 sets. The bottom of each protrusion 19 is spherical. Lubricant is filled between the slot 17 and the transmission ring 18. The rotation of the gear 11 driven by the motor 10 can drive the rotation of the transmission ring 18 and the protrusions 19 through the toothed ring 20, so as to push the ball head 14 and the auxiliary push rod 13 to move up and down reciprocally. This allows for rapid pushing of the edge of the rock inside the drill barrel 2, preventing it from being too tightly stuck and improving the speed of slag unloading. An annular reinforcing rib is installed on the top outer side of the drill barrel 2 below the mounting cover 4. The cross-section of the annular reinforcing rib is L-shaped. The horizontal part of the annular reinforcing rib is welded and fixed to the outer wall of the drill barrel 2, and the vertical part of the annular reinforcing rib extends outward. Guide ports are provided at the upper and lower ends of the main circular hole 5 and the secondary circular hole 6. The guide ports are all set in a trumpet shape, and the cone angle of the guide ports is at least 120 degrees. The inner wall of the guide ports is ground with a transition surface. The diameter of the main circular hole 5 and the secondary circular hole 6 is larger than the diameter of the main push rod 7 and the secondary push rod 13. The bottom end of the secondary push rod 13 is provided with a conical head.

[0020] This solution, through the addition of a main push rod 7, allows the drill barrel 2 to be lifted longitudinally during slag unloading. When it is lifted below the power head 1, the pressure plate 8 squeezes the first spring 9, causing the main push rod 7 to pass through the pre-drilled main circular hole 5 at the top of the drill barrel 2 and contact the rock. Thus, the continuous thrust of the main push rod 7 gradually detaches the rock from the drill barrel 2, achieving rapid slag unloading, improving overall construction efficiency, effectively reducing the waiting time of the equipment during the slag unloading process, avoiding violent collisions, effectively reducing construction noise, creating a more comfortable working environment for construction personnel, and reducing interference with the lives of surrounding residents. It is especially suitable for urban construction areas with high noise control requirements.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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. A rapid slag unloading device for a rotary drilling rig, characterized in that, include: A power head (1) is provided with a drill barrel (2) on its lower side. A shaft (3) is inserted inside the power head (1). The bottom end of the shaft (3) is coaxially connected to the top of the drill barrel (2). A mounting cover (4) is connected to the outer side of the top of the drill barrel (2). The main circular hole (5) is circumferentially opened at the top of the drill barrel (2). The main circular hole (5) is filled with a main push rod (7). The top of the main push rod (7) is connected to a pressure plate (8). The outside of the main push rod (7) is fitted with a first spring (9) at the position between the pressure plate (8) and the top of the drill barrel (2). The protrusion (21) is installed on both sides of the outer side of the insert shaft (3). The inner sides of the power head (1) are provided with grooves corresponding to the protrusion (21). The upper and lower ends of the first spring (9) are respectively connected to the pressure plate (8) and the top of the drill barrel (2). The top end of the insert shaft (3) is coaxially connected with a flange (22).

2. The rapid slag unloading device for a rotary drilling rig according to claim 1, characterized in that: The number of main circular holes (5) is set to at least 3 sets, the bottom end of the main push rod (7) is provided with a chamfer, the insert shaft (3) penetrates the interior of the pressure plate (8), and the height of the main push rod (7) is greater than the height of the mounting cover (4).

3. The rapid slag unloading device for a rotary drilling rig according to claim 1, characterized in that: A motor (10) is installed on the outer side of the mounting cover (4). A gear (11) is coaxially connected to the outer end of the rotor of the motor (10). An assembly ring (12) is inserted into the middle of the inner wall of the mounting cover (4). A secondary push rod (13) is inserted circumferentially inside the assembly ring (12).

4. The rapid slag unloading device for a rotary drilling rig according to claim 3, characterized in that: The top of the drill barrel (2) and the position corresponding to the auxiliary push rod (13) are provided with auxiliary circular holes (6). The bottom end of the auxiliary push rod (13) passes through the interior of the auxiliary circular hole (6), and the top end of the auxiliary push rod (13) is equipped with a ball head (14).

5. A rapid slag unloading device for a rotary drilling rig according to claim 4, characterized in that: A disc (16) is fitted on the outside of the auxiliary push rod (13) at the position below the assembly ring (12). A second spring (15) is fitted on the outside of the auxiliary push rod (13) at the position below the disc (16). The upper and lower ends of the second spring (15) are respectively connected to the corresponding positions of the top of the disc (16) and the drill barrel (2).

6. The rapid slag unloading device for a rotary drilling rig according to claim 3, characterized in that: The upper side of the inner wall of the mounting cover (4) is provided with a slot (17), and a transmission ring (18) is inserted inside the slot (17). A toothed ring (20) is connected to the upper surface of the transmission ring (18), and the toothed ring (20) meshes with the gear (11).

7. A rapid slag unloading device for a rotary drilling rig according to claim 6, characterized in that: The lower surface of the transmission ring (18) is circumferentially provided with protrusions (19), the number of protrusions (19) is at least 3 sets, the bottom of the protrusions (19) are all spherical structures, and the groove (17) and the transmission ring (18) are filled with lubricant.

8. The rapid slag unloading device for a rotary drilling rig according to claim 1, characterized in that: The top outer side of the drill barrel (2) is provided with an annular reinforcing rib located below the mounting cover (4). The annular reinforcing rib has an L-shaped cross section. The horizontal part of the annular reinforcing rib is welded and fixed to the outer wall of the drill barrel (2), and the vertical part of the annular reinforcing rib extends outward.

9. A rapid slag unloading device for a rotary drilling rig according to claim 4, characterized in that: The main circular hole (5) and the secondary circular hole (6) are provided with guide openings at their upper and lower ends. The guide openings are all flared, with a cone angle of at least 120 degrees. The inner wall of the guide opening is polished with a transition surface.

10. A rapid slag unloading device for a rotary drilling rig according to claim 3, characterized in that: The diameters of the main circular hole (5) and the secondary circular hole (6) are both larger than the diameters of the main push rod (7) and the secondary push rod (13), and the bottom end of the secondary push rod (13) is provided with a tapered head.

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