Active soil cleaner and long auger machine

Abstract

The application provides an active soil cleaner and a long spiral drilling machine, which comprises a casing capable of being sleeved on the outer periphery of a drill rod to guide the drill rod; a bearing driving assembly connected with a mast and the casing and capable of driving the casing to rotate around the axis of the drill rod; wherein a side wall of the casing is provided with a soil discharge opening and is connected with a soil scraping plate, and at least part of the soil discharge opening is located on the side of the soil scraping plate facing the soil; the soil scraping plate can be limited in the casing to clean the soil on the blades of the drill rod by rotating the soil scraping plate with the casing. In this way, the soil scraping plate and the casing are integrated into an integrated structure, which can greatly save the occupied space of the structure, and when the drill rod is replaced according to different sizes, the replacement of the soil scraping plate and the casing can be realized by one-step disassembly, which saves time and effort and is convenient and fast.

Description

Technical Field

[0001] This application relates to the field of piling machinery technology, specifically to an active soil cleaner and a long spiral drilling rig. Background Technology

[0002] In CFA (Continuous Augmentation and Fracturing) rotary drilling rig construction, a long auger drill rod is used. The auger drill rod consists of auger blades welded to a concrete pipe (core rod). Drilling is achieved through an auger drill bit with cutting teeth. The drill cuttings and soil are transported to the surface via the auger blades. However, the drill cuttings adhering to the auger drill rod require manual cleaning, which is labor-intensive, time-consuming, and poses numerous safety risks. Furthermore, the frequent forward and reverse rotation of the power head to eject soil causes significant environmental pollution and can easily lead to poor pile hole quality.

[0003] Currently, a cleaning device is generally configured when the auger blades carry the drill bit out of the borehole. The existing cleaning device has a casing and a scraper. Since the casing and scraper are only suitable for one type of drill rod, the disassembly and assembly of the casing and scraper are cumbersome, time-consuming and labor-intensive when changing to auger drill rods of different diameters. Summary of the Invention

[0004] In view of this, this application provides an active soil cleaner and a long auger drilling rig, which facilitates the replacement of scraper blades and casings, saving time and effort.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An active soil clearing device, comprising:

[0007] A casing can be fitted around the outer periphery of the drill pipe to guide the drill pipe;

[0008] A drive assembly is provided, connected to the mast and the casing, and capable of driving the casing to rotate about the axis of the drill pipe;

[0009] The casing has a soil discharge port on its side wall and is connected to a scraper blade. At least part of the soil discharge port is located on the facing side of the scraper blade. The scraper blade can be confined inside the casing so that the drill soil on the drill rod blade can be cleaned by the scraper blade rotating with the casing.

[0010] Optionally, the bearer drive component includes:

[0011] The first load-bearing component is connected to the mast and can be sleeved on the outside of the drill pipe;

[0012] The second support member is connected to the casing and can be sleeved on the outside of the drill pipe;

[0013] A slewing bearing, connected to the first and second load-bearing members;

[0014] A driving component is disposed on the first carrier and is connected to the slewing bearing to drive the second carrier to rotate relative to the first carrier.

[0015] Optionally, an annular cavity is formed between the first carrier and the second carrier, which is isolated from the drill pipe, and the slewing bearing is disposed within the annular cavity.

[0016] Optionally, the lower end face of the first support member is provided with an annular groove, which together with the upper end face of the second support member forms the annular inner cavity.

[0017] Optionally, the upper end face of the second support member is provided with an annular plate, which contacts the side wall of the annular groove near the drill rod.

[0018] Optionally, the sidewalls of the first and / or second support members are provided with observation windows.

[0019] Optionally, the driving component is configured as a low-speed, high-torque hydraulic motor, and the output end of the low-speed, high-torque hydraulic motor is provided with a gear that meshes with the slewing bearing.

[0020] Optionally, the load-bearing drive assembly is connected to the mast via a sliding frame that can slide along the length of the mast.

[0021] Optionally, a wear-resistant plate is provided on the sliding frame, and the sliding frame is slidably connected to the mast through the wear-resistant plate.

[0022] Optionally, the protective sleeve is connected to the load-bearing drive assembly via a quick-release structure.

[0023] Optionally, the quick-release structure includes:

[0024] The first quick-release hole and the second quick-release hole are respectively provided on the bearing drive assembly and the casing, and their extension directions are both perpendicular to the axis of the drill rod, and multiple sets are provided around the circumference of the drill rod.

[0025] The quick-release pin can pass through and connect to the first quick-release hole and the second quick-release hole.

[0026] Optionally, the scraper blade is rotatably connected to the casing, and a limiting structure is provided between the scraper blade and the casing. When the limiting structure is in the first state, the scraper blade is located inside the casing to clean the drill bit on the blade. When the limiting structure is in the second state, the scraper blade is located outside the casing to avoid the drill rod.

[0027] Optionally, the limiting structure includes:

[0028] The first insertion hole and a plurality of second insertion holes are respectively provided on the scraper blade and the casing, and the extension direction is parallel to the rotation axis of the scraper blade relative to the casing.

[0029] A pin is capable of passing through and connecting to the first insertion hole and one of the second insertion holes to confine the scraper blade inside the casing; and is also capable of passing through and connecting to the first insertion hole and the other of the second insertion holes to confine the scraper blade outside the casing.

[0030] Optionally, the scraper blade has a first plate portion and a second plate portion, the first plate portion and the second plate portion are respectively located in two adjacent scraping areas, the scraping area being the area between two adjacent blades; and an avoidance hole is provided between the first plate portion and the second plate portion for the blades to pass through.

[0031] Optionally, the scraper blade is provided with multiple soil-dividing components on its front side.

[0032] Optionally, the soil divider is plate-shaped, with at least a portion of it resting on a first plane that gradually descends along a direction away from the axis of the drill rod, so that the soil divider can guide the drill bit soil outside the casing.

[0033] Optionally, the back of the scraper blade is provided with a wire brush and / or a roller, the wire brush being close to the axis of the drill rod relative to the scraper blade, and the roller being close to the upper surface of the blade relative to the scraper blade.

[0034] A long spiral drilling rig includes an active soil cleaner, wherein the active soil cleaner is any of the active soil cleaners described above.

[0035] The active soil cleaner and long spiral drilling rig provided in this application have a soil discharge port on the side wall of the casing, and a scraper is connected to the soil discharge port. By extending the scraper between two adjacent blades of the drill rod, the drill soil on the drill rod blades is cleaned. At the same time, the drill soil scraped off by the scraper is discharged through the soil discharge port, thus completing the cleaning of the drill rod blades. In this way, the scraper is integrated into the casing, and a soil discharge port is provided on the casing to allow the drill soil scraped off by the scraper to be discharged through the soil discharge port, which greatly saves the structural volume of the scraper and casing. At the same time, the scraper and casing form an integral component. When it is necessary to replace them according to different drill rod sizes, the replacement of the scraper and casing can be achieved in one step of disassembly and assembly, which saves time and effort and is convenient and quick. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 These are schematic diagrams illustrating the installation of an active soil cleaner in some embodiments;

[0038] Figure 2 Structural diagrams of the sliding frame shown in some embodiments;

[0039] Figure 3 A structural diagram of the first carrier shown in some embodiments;

[0040] Figure 4 Structural diagram of the second carrier shown in some embodiments;

[0041] Figure 5 This is a schematic diagram illustrating the structure of a scraper blade located inside a casing, as shown in some embodiments.

[0042] Figure 6 This is a schematic diagram illustrating a structure where the scraper blade is located outside the casing, as shown in some embodiments.

[0043] Figure 7 A frontal structural diagram of a scraper blade is shown in some embodiments;

[0044] Figure 8 This is a structural diagram of the back of a scraper blade shown in some embodiments.

[0045] In the diagram: 1. Drill rod; 2. Mast; 3. Sliding frame; 4. Drive component; 5. First bearing component; 6. Second bearing component; 7. Casing; 8. Slewing bearing; 9. Scraper; 10. Pin; 11. First insertion hole; 12. Second insertion hole; 31. Wear-resistant plate; 51. Annular groove; 61. Annular plate; 62. First quick-release hole; 71. Soil discharge port; 72. Second quick-release hole; 91. Soil separating component; 92. Wire brush; 93. Roller. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] like Figures 1-8As shown in the figure, this application embodiment provides an active soil cleaner, including a casing 7, a load-bearing drive assembly and a scraper blade 9.

[0048] The casing 7 is connected to the mast 2 via a load-bearing drive assembly. Under the load-bearing action of the load-bearing drive assembly, the casing 7 can be fitted onto and held on the outer periphery of the drill rod 1. The casing 7 has a guide hole for the drill rod 1 to pass through. The guide hole is adapted to the size of the drill rod 1 so that the casing 7 can guide the drill rod 1 through the guide hole when the drill rod 1 moves up and down, thereby keeping the drill rod 1 in the vertical direction.

[0049] The load-bearing drive assembly connects the mast 2 and the casing 7 respectively, so that the casing 7 is connected to the mast 2 through the load-bearing drive assembly. While maintaining the position of the casing 7 relative to the mast 2, it can also drive the casing 7 to rotate about the axis of the drill rod 1 (that is, rotate around the axis of the drill rod 1. At this time, the casing 7 is coaxial with the drill rod 1, which is equivalent to the casing 7 rotating around its own axis). Since the drill rod 1 has helical blades, the rotation speed of the casing 7 relative to the drill rod 1 can be matched with the lifting speed of the drill rod 1. So that when the drill rod 1 is lifting and passing through the casing 7, the rotation of the casing 7 matches the helix of the blades, so that the casing 7 can drive the scraper 9 to rotate around the blades to clean the drill soil on the blades.

[0050] The casing 7 has a soil discharge port 71 on its side wall, and a scraper 9 is connected to the side wall of the casing. By extending the scraper 9 between two adjacent blades of the drill rod 1, the drill soil on the blades of the drill rod 1 is cleaned. At least part of the soil discharge port is located on the facing side of the scraper 9 (in this design, the scraper 9 extends into the casing from one side of the soil discharge port, so that the entire soil discharge port is located on the facing side of the scraper 9), so that the drill soil scraped off by the scraper 9 will be discharged from the soil discharge port 71, thereby completing the cleaning of the blades of the drill rod 1. Specifically, the scraper 9 is connected to the side wall of the casing 7 and can extend into the casing 7 from the soil discharge port 71 and extend out of the casing 7 from the soil discharge port 71. Here, the scraper 9 can be hinged to the casing 7 or slidably connected to the casing 7. In this way, the scraper blade 9 is integrated on the casing 7, and a soil discharge port 71 is opened on the casing 7 so that the drill soil scraped off by the scraper blade 9 can be discharged through the soil discharge port 71. This greatly saves the structural volume of the scraper blade 9 and the casing 7. At the same time, the scraper blade 9 and the casing 7 form an integrated component. When it is necessary to replace them according to different drill rod 1 sizes, the scraper blade 9 and the casing 7 can be replaced in one step, which saves time and effort and is convenient and quick.

[0051] In actual use, the load-bearing drive assembly drives the casing 7 to rotate around the axis of the drill rod 1, causing the casing 7 to drive the scraper 9 to rotate relative to the drill rod 1. At this time, the scraper 9 extends into the casing 7 from the discharge port 71 and is confined within the casing 7, allowing the scraper 9 to extend between two adjacent blades. By rotating along the blade, the scraper 9 peels off the drill soil on the blade and discharges it from the discharge port 71, thereby cleaning the blades of the drill rod 1. Correspondingly, when the drill rod 1 descends and passes through the casing 7, the casing 7 guides the drill rod 1, and the scraper 9 does not need to clean the blades. In this case, the load-bearing drive assembly can stop driving the casing 7 to rotate, and the scraper 9 is confined outside the casing 7 to avoid the blades of the drill rod 1.

[0052] This design integrates the scraper blade 9 and the casing 7 into a single structure, which greatly saves the space occupied by the structure. Moreover, when replacing the scraper blade 9 and the casing 7 according to different drill rod sizes, the replacement can be achieved in one step of disassembly and assembly, saving time and effort and making it convenient and quick.

[0053] In this design, the load-bearing drive assembly includes a first load-bearing member 5, a second load-bearing member 6, a slewing bearing 8, and a drive member 4. The first load-bearing member 5 is connected to the mast 2 to support the entire load-bearing drive assembly. The second load-bearing member 6 is connected to the casing 7 to connect the casing 7 relative to the entire load-bearing drive assembly. The first load-bearing member 5 and the second load-bearing member 6 are connected via the slewing bearing 8, allowing them to rotate relative to each other. This, in turn, allows the casing 7 to rotate relative to the first load-bearing member 5 and the mast 2, facilitating rotation of the casing 7 relative to the drill pipe 1. Furthermore, both the first load-bearing member 5 and the second load-bearing member 6 can be fitted onto the outer circumference of the drill pipe 1, making the connection between the first load-bearing member 5 and the second load-bearing member 6 more stable. This also ensures that the second load-bearing member 6 has a better load-bearing connection effect in the circumferential direction of the casing 7, improving the reliability of the load-bearing capacity of the casing 7.

[0054] Specifically, the first bearing member 5, the second bearing member 6, and the slewing bearing 8 are all configured as annular structures. To accommodate drill pipes of different sizes 1, the inner diameters of the first bearing member 5, the second bearing member 6, and the slewing bearing 8 are all larger than the maximum outer diameter of each model of drill pipe 1, allowing for adaptation to various sizes of drill pipes without replacing the bearing drive assembly. Furthermore, the slewing bearing 8 has an inner ring and an outer ring capable of relative rotation. During connection, the inner and outer rings of the slewing bearing 8 are respectively connected to the first bearing member 5 and the second bearing member 6 to achieve relative rotation between them. The inner ring of the slewing bearing 8 can be connected to either the first bearing member 5 or the second bearing member 6; this is not limited to either connection.

[0055] The drive component 4 is used to output rotational power. It is connected to the slewing bearing 8 so that the rotational power output by the drive component 4 can drive the inner and outer rings of the slewing bearing 8 to rotate relative to each other, thereby causing the first bearing component 5 and the second bearing component 6 to rotate relative to each other. The drive component 4 is fixed on the first bearing component 5 and drives the second bearing component 6 to rotate relative to the first bearing component 5.

[0056] Specifically, the inner ring of the slewing bearing 8 is connected and fixed to the first bearing member 5 (for example, a connection method in which one ring of bolts is connected to one ring of through holes), the outer ring of the slewing bearing 8 is connected and fixed to the second bearing member 6 (for example, a connection method in which one ring of bolts is connected to one ring of through holes), and the driving member 4 is fixed on the first bearing member 5 and is connected to the outer ring of the slewing bearing 8 for transmission, so as to drive the second bearing member 6 to rotate relative to the first bearing member 5.

[0057] In some embodiments, an annular cavity is formed between the first support member 5 and the second support member 6. This annular cavity can be isolated from the drill rod 1 so that the annular cavity constitutes a closed space that can isolate the drill soil. The slewing bearing 8 is set in the annular cavity, which can prevent the drill soil on the blade from affecting the slewing bearing 8 during the blade cleaning process, and is conducive to improving the stability and safety of the slewing bearing 8.

[0058] In this design, the lower end face of the first bearing member 5 is close to the upper end face of the second bearing member 6. An annular groove 51 is provided on the lower end face of the first bearing member 5, which, together with the upper end face of the second bearing member 6, forms the aforementioned annular inner cavity. In this way, the slewing bearing 8 can be installed in the annular groove 51. Since the opening of the annular groove 51 faces downward, it can prevent the accumulation of debris (such as drill bit soil, dust, etc.) in the annular groove 51, which is beneficial to improving the protective performance of the slewing bearing 8.

[0059] Of course, in other solutions, the lower end face of the first bearing member 5 and the upper end face of the second bearing member 6 may both be provided with the above-mentioned annular groove, or the upper end face of the second bearing member 6 may be provided with the above-mentioned annular groove, so as to form protection for the slewing bearing 8.

[0060] Furthermore, an annular plate 61 is provided on the upper end face of the second support member 6. The annular plate 61 contacts the side wall of the annular groove 51 near the drill rod 1. The side walls of the annular groove 51 are all annular and are divided into large side walls and small side walls according to their diameters. The small side walls are closer to the axis of the second support member 6 (i.e., the axis of the drill rod 1) relative to the large side walls. Here, the size of the annular plate 61 is adapted to the size of the small side wall of the annular groove 51 so that the annular plate 61 contacts the small side wall, thereby forming a partition between the annular plate 61 and the small side wall to prevent the drill soil from entering the annular cavity. Specifically, the annular plate 61 can be located inside the annular groove 51, outside the annular groove 51, or on the end face of the small side wall.

[0061] The sidewalls of the first bearing member 5 and / or the second bearing member 6 are provided with observation windows. Through the observation windows, the soil removal status of the drill rod 1 can be observed through the first bearing member 5 and / or the second bearing member 6. By observing the soil blockage after the blades are cleaned, it is easy to judge the pollution protection status of the inner wall of the slewing bearing 8.

[0062] Specifically, since the first support member 5 is provided with an annular groove 51, opening an observation window would affect the formed annular inner cavity. Therefore, this solution only opens an observation window on the second support member 6. The observation window can be made of transparent material or can be made of through hole. Here, the observation window is preferably a plurality of waist-shaped holes arranged along the circumference, which can not only have the function of observation, but also allow the soil to be discharged.

[0063] The drive component 4 is configured as a low-speed, high-torque hydraulic motor. A gear is installed at the output end of the low-speed, high-torque hydraulic motor, which meshes with the slewing bearing 8 (specifically, the gear directly meshes with the outer ring of the slewing bearing 8) to achieve the transmission connection between the drive component 4 and the slewing bearing 8. A hydraulic motor, conventionally speaking, refers to an energy conversion device that outputs rotary motion, converting the hydraulic energy provided by a hydraulic pump into mechanical energy. A low-speed, high-torque hydraulic motor refers to a hydraulic motor with a relatively low speed but a relatively high output torque. Low-speed, high-torque hydraulic motors are relative to high-speed motors. Generally speaking, motors with a rated speed below 500 r / min are considered low-speed motors. In this design, the low-speed, high-torque hydraulic motor has a rated output torque of 700-800 N·m and a rated output speed of 70-110 r / min. It can directly mesh with the slewing bearing 8 via gears. In contrast, existing technologies require a high-speed motor with equivalent power, which might need to reach 1800 r / min. This necessitates adding a reducer to connect with the high-speed motor, thereby reducing the speed and increasing the torque to meet design requirements. Therefore, this design, by using a low-speed, high-torque hydraulic motor directly connected to the slewing bearing 8 via gears, reduces the need for a reducer, simplifying the structure and saving costs.

[0064] Of course, drive component 4 can also be set as a low-speed motor.

[0065] In some embodiments, the load-bearing drive assembly is connected to the mast 2 via a sliding frame 3, and the sliding frame 3 can slide along the length of the mast 2, so that the load-bearing drive assembly can drive the casing 7 and the scraper blade 9 to move along the mast 2. In this way, during the soil cleaning process, when the resistance formed by the drilling soil on the blades on the scraper blade 9 is large, the rotation speed of the scraper blade 9 along the blades cannot reach the standard for lifting the drill rod 1 and gets stuck. That is, at the same time, the angle of rotation of the scraper blade 9 relative to the drill rod 1 is smaller than the angle of spiral rotation of the blades when the drill rod 1 is lifted. At this time, under the action of the sliding frame 3, the drill rod 1 can drive the scraper blade 9 and the casing 7 to be lifted. After passing through the area with large drilling resistance, the scraper blade 9 and the casing 7 descend back to their original positions. The up and down sliding of the sliding frame 3 provides a flexible transition for the scraping of soil by the scraper blade 9, avoiding hard contact between the scraper blade 9 and the blades and damage to the drill rod 1.

[0066] It should be noted that in order to keep the sliding frame 3 on the mast 2, a stop is provided on the mast 2 to block the falling of the sliding frame 3, so as to keep the sliding frame 3 in the lowest sliding position, while supporting the load-bearing drive assembly, the protective casing 7 and the scraper 9.

[0067] The sliding frame 3 is provided with a wear-resistant plate 31, and the sliding frame 3 is slidably connected to the mast 2 through the wear-resistant plate 31. Specifically, the wear-resistant plate 31 is made of nylon, which helps to reduce the wear of the sliding frame 3 when it slides up and down along the mast 2.

[0068] like Figure 2 As shown, the sliding frame 3 has a guide groove, which cooperates with the guide rail on the mast 2 to allow the sliding frame 3 to slide relative to the mast 2. The wear-resistant plate 31 is provided on the inner wall of the guide groove and contacts the guide rail on the mast 2. In addition, lifting lugs are provided on the side of the sliding frame 3 for overall lifting, that is, to enable the active soil cleaner to slide up and down on the mast 2.

[0069] The casing 7 and the load-bearing drive assembly are connected by a quick-release structure to enable the casing 7 and the scraper blade 9 to be quickly disassembled and assembled relative to the load-bearing drive assembly. This allows for the quick replacement of the casing 7 and the scraper blade 9 according to the size of the drill rod 1, thereby improving work efficiency.

[0070] The quick-release structure includes a first quick-release hole 62, a second quick-release hole 72, and a quick-release pin. The first quick-release hole 62 and the second quick-release hole 72 are respectively located on the load-bearing drive assembly and the casing 7. The extension directions of both the first quick-release hole 62 and the second quick-release hole 72 are perpendicular to the axis of the drill rod 1. Thus, by simultaneously connecting the first quick-release hole 62 and the second quick-release hole 72 through the quick-release pin, a quick connection can be formed between the first quick-release hole 62 and the second quick-release hole 72, thereby achieving a quick connection between the load-bearing drive assembly and the casing 7. Since the force direction of the first quick-release hole 62 and the second quick-release hole 72 is vertical (the direction of the axis of the drill rod 1), the horizontal connection through the quick-release pin provides good structural stability. Furthermore, multiple sets of the first quick-release hole 62 and the second quick-release hole 72 are arranged around the circumference of the drill rod 1, forming multiple connection points in the circumference of the casing 7 and the load-bearing drive assembly, further improving the connection quality.

[0071] like Figure 3 , 4 As shown, the first quick-release hole 62 is provided through the side wall of the load-bearing drive assembly (specifically, the side wall of the second load-bearing member 6). An ear plate is provided on the upper end face of the casing 7, and the second quick-release hole 72 is provided on the ear plate. The positions of the first quick-release hole 62 and the second quick-release hole 72 are aligned to allow the quick-release pin to quickly pass through and connect. Of course, the quick-release structure can also be replaced by bolts passing through both.

[0072] Based on the specific solutions of the above embodiments, the quick-release structure can also be configured between the sliding frame 3 and the load-bearing drive assembly (first load-bearing member 5), thereby improving the overall assembly and disassembly efficiency. For example, an ear plate can be provided on the upper end surface of the first load-bearing member 5 to connect with the sliding frame 3 via the quick-release structure.

[0073] The scraper blade 9 is rotatably connected to the casing 7. By rotating the scraper blade 9 relative to the casing 7, it can extend into and out of the casing 7. Furthermore, a limiting structure is provided between the scraper blade 9 and the casing 7. By limiting the rotation between the scraper blade 9 and the casing 7, the scraper blade 9 is confined to either inside or outside the casing 7, facilitating switching of its operating mode and preventing it from interfering with the operation of the drill rod 1. Specifically, the limiting structure has two states: in the first state, the scraper blade is located inside the casing to clean the drill bit soil from the blades; in the second state, the scraper blade is located outside the casing to avoid obstructing the drill rod.

[0074] like Figure 5 , 6As shown, the limiting structure includes a first insertion hole 11, a second insertion hole 12, and a pin 10. The second insertion hole 12 is provided in multiple ways, and each of them can cooperate with the first insertion hole 11 (that is, the first insertion hole 11 and the second insertion hole 12 are both spaced apart from the axis of rotation of the scraper blade 9 relative to the casing 7, and the spacing is equal). The first insertion hole 11 and the multiple second insertion holes 12 are respectively provided on the scraper blade 9 and the casing 7, and the extending direction of the first insertion hole 11 and the multiple second insertion holes 12 is parallel to the axis of rotation of the scraper blade 9 relative to the casing 7. Thus, when the pin 10 is connected through the first insertion hole 11 and one of the second insertion holes 12, the first insertion hole 11 and the second insertion hole 12 are blocked by the pin 10 and cannot move relative to each other, thereby confining the scraper blade 9 inside the casing 7. When the pin 10 is connected through the first insertion hole 11 and the other second insertion hole 12, the first insertion hole 11 and the second insertion hole 12 are blocked by the pin 10 and cannot move relative to each other, thereby confining the scraper blade 9 outside the casing 7. The limiting of the scraper blade 9 can be achieved by inserting the pin 10. The connection is simple, stable and reliable, and the operation is time-saving and labor-saving.

[0075] Specifically, there are contact end plates between the scraper blade 9 and the casing 7, and the first insertion hole 11 and the second insertion hole 12 are respectively provided on the end plate of the scraper blade 9 and the end plate of the casing 7.

[0076] In some preferred embodiments, the scraper blade 9 is provided with a first plate section, a second plate section, and a clearance hole. Both the first and second plate sections are used to extend into the scraping area between two adjacent blades and clean the soil in that area. Furthermore, the first and second plate sections are located in adjacent scraping areas, allowing simultaneous cleaning of both pitches of the blades, which improves cleaning efficiency and quality. The clearance hole allows the blades to pass through. The first and second plate sections are located on the upper and lower sides of the clearance hole, respectively, so that while the scraper blade 9 scrapes soil through the first and second plate sections, it can also pass through the clearance hole to avoid damaging the blades.

[0077] like Figure 7 As shown, the scraper blade 9 has multiple soil separating components 91 on its front side. Specifically, the cross-section of the soil separating component 91 gradually decreases in the direction away from the scraper blade 9 so that the soil separating component 91 has a pointed tip. During operation, the soil on the blade is first peeled and broken off by the pointed tip, and then scraped off by the scraper blade 9. This is beneficial for cleaning hard soil and further improves the scraping effect.

[0078] The scraper 9 is plate-shaped, for example, the scraper is a triangular plate. At least some of the surfaces of the multiple soil dividers 91 are on the same plane (i.e., the first plane), which gradually descends in a direction away from the axis of the drill rod 1, so that the soil dividers 91 can guide the broken drill soil to the outside of the casing 7, which is conducive to the discharge of drill soil.

[0079] Of course, at least some of the surfaces of the multiple soil-dividing components 91 are on the same plane (i.e., the second plane), which is close to and parallel to the upper or lower surface of the blade, so as to facilitate the cleaning of the soil-dividing components close to the blade and improve the cleaning effect.

[0080] like Figure 8 As shown, a wire brush 92 is provided on the back of the scraper 9. The brush head of the wire brush 92 protrudes from the scraper 9 and is close to the axis of the drill rod 1 relative to the scraper 9. Since the scraper 9 is made of rigid material, it cannot get too close to the core rod of the drill rod 1 to prevent damage to the core rod. This solution uses a flexible wire brush 92 close to the core rod to flexibly clean the drill soil near the core rod, thereby improving the cleaning quality.

[0081] The back of the scraper blade 9 is provided with a roller 93, which can roll along the upper surface of the blade. The roller 93 is close to the upper surface of the blade relative to the scraper blade 9. In this way, when the lifting speed of the drill rod 1 is too fast relative to the rotation speed of the casing 7 and the scraper blade 9, the roller 93 can rest on the blade to avoid damage caused by hard contact between the scraper blades 9 and the blade. At the same time, the roller 93 can also drive the scraper blade 9 to move along the blade, improving the smoothness of the rotation of the scraper blade 9 and the scraping of soil.

[0082] It should be noted that the facing side of the scraper blade 9 is the surface that contacts the drill soil when the scraper blade 9 rotates relative to the drill rod 1, such as... Figure 7 The surface shown. The back of the scraper 9 is the opposite side of the facing side, as shown. Figure 8 The face shown.

[0083] This application provides a long spiral drilling rig, including an active soil cleaner, which is the active soil cleaner described in the above embodiment. This configuration integrates the scraper blade 9 and the casing 7 into a single structure, significantly saving structural space. Furthermore, when replacing drill rods 1 according to different sizes, the scraper blade 9 and casing 7 can be replaced in a single disassembly and assembly step, saving time and effort, and providing convenience and speed.

[0084] In addition, for other beneficial effects brought about by this long auger drilling rig, please refer to the above description of the active soil cleaner, which will not be repeated here.

[0085] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0086] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0087] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0088] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0089] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0090] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An active soil cleaning device, characterized in that, include: A casing can be fitted around the outer periphery of the drill pipe to guide the drill pipe; A load-bearing drive assembly includes a first load-bearing member, a second load-bearing member, a slewing bearing, and a drive member. The first load-bearing member is connected to the mast and can be fitted over the drill pipe. The second load-bearing member is connected to the casing via a quick-release structure and can be fitted over the drill pipe. The slewing bearing is connected to the first load-bearing member and the second load-bearing member. The drive member is disposed on the first load-bearing member and is pulsatorically connected to the slewing bearing to drive the second load-bearing member to rotate relative to the first load-bearing member. An annular cavity is formed between the first load-bearing member and the second load-bearing member, which is isolated from the drill pipe. The slewing bearing is disposed within the annular cavity. An annular groove is provided on the lower end face of the first load-bearing member, and it forms the annular cavity with the upper end face of the second load-bearing member. An annular plate is provided on the upper end face of the second load-bearing member, and the annular plate contacts the side wall of the annular groove near the drill pipe. The casing has a soil discharge port on its side wall and is connected to a scraper blade. At least part of the soil discharge port is located on the facing side of the scraper blade. The scraper blade can be confined inside the casing so that the drill soil on the drill rod blade can be cleaned by the scraper blade rotating with the casing.

2. The active soil cleaner according to claim 1, characterized in that, The sidewalls of the first support member and / or the second support member are provided with observation windows.

3. The active soil cleaner according to claim 1, characterized in that, The driving component is a low-speed, high-torque hydraulic motor, and the output end of the low-speed, high-torque hydraulic motor is provided with a gear that meshes with the slewing bearing.

4. The active soil cleaner according to claim 1, characterized in that, The scraper blade is rotatably connected to the casing, and a limiting structure is provided between the scraper blade and the casing. When the limiting structure is in the first state, the scraper blade is located inside the casing to clean the drill bit on the blade. When the limiting structure is in the second state, the scraper blade is located outside the casing to avoid the drill rod.

5. The active soil cleaner according to any one of claims 1-4, characterized in that, The scraper blade has multiple soil-dividing components on its front side.

6. The active soil cleaner according to claim 5, characterized in that, The back of the scraper is provided with a wire brush and / or a roller, the wire brush being close to the axis of the drill rod relative to the scraper, and the roller being close to the upper surface of the blade relative to the scraper.

7. A long spiral drilling rig, comprising an active soil cleaner, characterized in that, The active soil cleaner is the active soil cleaner as described in any one of claims 1-6.

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