A rotary drilling device and a rotary drilling bored pile construction process thereof

Abstract

The present application relates to a rotary drilling device and a rotary drilling pile construction process thereof, and relates to the technical field of construction engineering, which includes a drill bucket, a drill bit, a cleaning assembly and a first driving assembly; one end of the drill bucket is provided with a plurality of first tooth grooves along its own circumferential direction, and a first sawtooth is formed between two adjacent first tooth grooves; the cleaning assembly is located in the drill bucket, and the cleaning assembly includes a cleaning rod, and the inner wall of the drill bucket is provided with a receiving groove along the depth direction of the drill bucket, and the cleaning rod is located in the receiving groove, and the cleaning rod is connected to the drill bucket in a sliding manner along the radial direction of the drill bucket, and the cleaning rod is connected to the drill bucket in a rotational axis parallel to the depth direction of the drill bucket; the first driving assembly is connected to the cleaning rod, and is used to drive the cleaning rod to slide in the radial direction of the drill bucket. The present application has the effect of being able to scrape away the accumulated soil in the drill bucket when the drilling is completed.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a rotary drilling equipment and a rotary drilling cast-in-place pile construction process. Background Technology

[0002] With the accelerating pace of urbanization and the increasing number of high-rise buildings, the demand for deep foundation engineering in infrastructure construction is constantly growing. Currently, rotary drilling technology is widely used in deep foundation treatment, especially in pile foundation construction on soft soil foundations, due to its advantages such as high efficiency and stable quality. However, traditional rotary drilling equipment still faces many limitations and challenges under complex geological conditions.

[0003] Under relevant technologies, existing rotary drilling equipment typically uses a drill bucket with an opening to complete drilling operations. The drill bucket consists of a bucket body and a gate, with an opening at the bottom of the bucket body and a gate for closing this opening. During drilling, the drill bucket follows the rotation of the drill rod into the soil and collects the soil inside the bucket body. Once the drill bucket is fully loaded, it is pulled out of the borehole, at which point the gate opens, allowing the soil to fall out under its own weight. In addition, there are other design methods, such as using corrugated inner walls or installing reinforcing ribs in the gate, to attempt to improve the problems of traditional drill buckets, but these designs mainly focus on improving the strength of the gate or optimizing the shape of the drill bucket.

[0004] Regarding the aforementioned technologies, highly viscous soil tends to adhere to the inner wall of the drill bit, making it difficult to detach and severely impacting the unloading efficiency. This phenomenon has become one of the key factors restricting further performance improvements in existing rotary drilling equipment. Summary of the Invention

[0005] In order to scrape away the soil accumulated in the drill bucket when drilling is completed, this application provides a rotary drilling equipment and a rotary drilling cast-in-place pile construction process.

[0006] Firstly, the rotary drilling equipment provided in this application adopts the following technical solution:

[0007] A rotary drilling device, characterized in that it includes a drill bucket, a drill bit, a cleaning assembly, and a first drive assembly;

[0008] The drill bit has multiple first tooth grooves at one end along its circumferential direction, and a first serration is formed between two adjacent first tooth grooves.

[0009] The cleaning assembly is located inside the drill bucket. The cleaning assembly includes a cleaning rod. The inner wall of the drill bucket has a receiving groove along the depth direction of the drill bucket. The cleaning rod is located in the receiving groove. The cleaning rod is slidably connected to the drill bucket along the radial direction of the drill bucket. The cleaning rod is rotatably connected to the drill bucket. The cleaning rod is parallel to the depth direction of the drill bucket along the rotation axis of the drill bucket.

[0010] The first drive assembly is connected to the cleaning rod to drive the cleaning rod to slide in the radial direction of the drill bit.

[0011] By adopting the above technical solution, this application sets up a cleaning rod and a drill bit. The drill bit drills into the foundation. When the drill bit has drilled into the foundation to a certain depth, the soil will be further drilled into the drill bit. When the drill bit is full of soil, the soil is poured out of the drill bit under its own weight. However, some soil will still adhere to the inner wall of the drill bit. The cleaning rod rotates along the depth direction of the drill bit to clean the soil adhering to the inner wall of the drill bit. When the cleaning rod is not needed, the cleaning rod is located in the receiving groove, so as not to affect the drill bit's drilling into the foundation, and also to reduce the amount of soil accumulating in the drill bit during drilling, which would squeeze the cleaning rod and cause damage to the cleaning rod.

[0012] Optionally, the first drive assembly includes a first rotating shaft, a first bevel gear, a second bevel gear, and a rotating rod;

[0013] The first rotating shaft is parallel to the depth direction of the drill bit, and the first rotating shaft is rotatably connected to the drill bit;

[0014] The first bevel gear is coaxially sleeved on the first rotating shaft, and the second bevel gear is rotatably connected to the drill bit. The second bevel gear is parallel to the radial direction of the drill bit along the rotation axis of the drill bit.

[0015] The rotating rod is arranged parallel to the radial direction of the drill bit, the second bevel gear is sleeved on the rotating rod, the cleaning rod is directly or indirectly sleeved on the rotating rod, and the cleaning rod slides along the length of the rotating rod.

[0016] By adopting the above technical solution, by setting the first drive assembly, the first rotating shaft rotates along the depth direction of the drill bucket to drive the first bevel gear and the second bevel gear to rotate, which in turn drives the rotating rod to rotate along the radial direction of the drill bucket, thereby driving the cleaning rod to slide along the length direction of the rotating rod so that the cleaning rod slides out of the receiving groove, which facilitates the subsequent cleaning of the mud on the inner wall of the drill bucket.

[0017] Optionally, a limiting component is also included, the limiting component including a limiting block, the limiting block being fixedly sleeved on the rotating rod, the limiting block limiting the sliding of the cleaning rod along the length direction of the rotating rod.

[0018] By adopting the above technical solution, when cleaning the inner wall of the drill bucket, the cleaning rod needs to contact the inner wall of the drill bucket. To this end, the cleaning rod needs to slide along the radial direction of the drill bucket until it contacts the inner wall of the drill bucket. By setting a limiting block, the limiting block limits the sliding of the cleaning rod along the radial direction of the drill bucket so that the cleaning plate contacts the inner wall of the drill bucket.

[0019] Optionally, the limiting component further includes a first elastic element, the extension and retraction direction of the first elastic element being parallel to the length direction of the rotating rod, one end of the first elastic element being fixedly connected to the limiting block, and the other end being directly or indirectly connected to the cleaning rod.

[0020] By adopting the above technical solution, when the cleaning rod slides along the length of the rotating rod towards the side close to the limiting block, the first elastic element is compressed so that the sliding seat is limited by the limiting block and the first elastic element along the length of the rotating rod.

[0021] Optionally, the cleaning rod is connected to the rotating rod via a sliding seat, the sliding seat is sleeved on the rotating rod and the rotating rod slides along its length, the first elastic element is fixedly connected between the sliding seat and the limiting block, and the cleaning rod is slidably connected to the sliding seat along the radial direction of the drill bit.

[0022] By adopting the above technical solution, since the soil adhering to the inner wall of the drill bucket may have a certain thickness, when the cleaning rod comes into contact with soil of a certain thickness, in order not to affect the rotation of the cleaning rod along the depth direction of the drill bucket, the cleaning rod is connected to the rotating rod through a sliding seat, so that when the cleaning rod comes into contact with soil of a certain thickness, the cleaning rod can have space to slide along the radial direction of the drill bucket, so that the cleaning rod can still rotate smoothly along the depth direction of the drill bucket.

[0023] Optionally, a sliding assembly is provided between the sliding seat and the cleaning rod. The sliding assembly includes a first telescopic rod, the telescopic direction of which is parallel to the radial direction of the drill bit. The movable section of the first telescopic rod is fixedly connected to the cleaning rod, and the fixed section of the first telescopic rod is fixedly connected to the sliding seat. The ends of the fixed section and the movable section of the first telescopic rod that are close to each other are slidably connected.

[0024] By adopting the above technical solution, in order to drive the cleaning rod to slide along the sliding seat in the radial direction of the drill bucket, a first telescopic rod is set so that the cleaning rod has room to move in the radial direction of the drill bucket, so that the cleaning rod can rotate smoothly.

[0025] Optionally, the sliding assembly further includes a second elastic element, which is sleeved on the fixed section of the first telescopic rod and fixedly connected between the sliding seat and the movable section of the first telescopic rod. Under recoverable deformation, the second elastic element has a force that drives the cleaning rod to move away from the sliding seat.

[0026] By adopting the above technical solution, in order to ensure that the cleaning rod can always be in contact with the soil adhering to the inner wall of the drill bucket, even if the cleaning rod can be reset, by setting a second elastic element, if the cleaning rod comes into contact with soil of a certain thickness, under the action of the second elastic element and the first telescopic rod, the second elastic element is in a compressed state, and the cleaning rod slides towards the side closer to the sliding seat. When the cleaning rod passes through a thicker layer of soil, the second elastic element changes from the compressed state to the normal state, so as to ensure that the cleaning rod is always in contact with the soil adhering to the inner wall of the drill bucket to scrape off the soil.

[0027] Optionally, it may also include a second drive assembly for driving the cleaning rod to rotate, the second drive assembly including a first rotating cylinder, a second rotating cylinder, a first stop block and a second stop block;

[0028] The first rotating cylinder is parallel to the depth direction of the drill bit, the first rotating cylinder is connected to the drill bit through the first mounting base, the first rotating shaft is located inside the first rotating cylinder, and the first rotating cylinder is rotatably connected to the first rotating shaft.

[0029] The second rotating cylinder is parallel to the radial direction of the drill bit, and one end of the second rotating cylinder is fixedly connected to one end of the first rotating cylinder. The end of the second rotating cylinder connected to the first rotating cylinder is in communication. The rotating rod is located inside the second rotating cylinder. A through hole is opened on the side of the second rotating cylinder away from the first rotating cylinder to accommodate the passage of the first telescopic rod. The outer peripheral wall of the sliding seat is in contact with the inner peripheral wall of the second rotating cylinder.

[0030] The first stop block is fixedly connected to the first rotating shaft, and the second stop block is fixedly connected to the inner wall of the first rotating cylinder. When the first rotating shaft rotates, the second stop block contacts the first stop block, and the first rotating cylinder rotates along the drill bit.

[0031] By adopting the above technical solution, in order to drive the cleaning rod to rotate in the depth direction of the drill bucket, a second driving component is set up. When the first stop is in the initial position, the cleaning rod is located in the receiving groove. When the motor drives the first rotating shaft to rotate, it drives the first stop to rotate. At this time, the first stop has not yet contacted the second stop. The first rotating shaft drives the rotating rod to rotate in the radial direction of the drill bucket through the first bevel gear and the second bevel gear, which drives the first sliding seat to slide in the length direction of the rotating rod, thereby driving the cleaning rod to slide in the length direction of the rotating rod to the outside of the receiving groove, so that the cleaning rod contacts the inner wall of the drill bucket. The first stop continues to rotate until it abuts against the second stop, which drives the first rotating cylinder to rotate in the depth direction of the drill bucket, drives the second rotating cylinder to rotate in the depth direction of the drill bucket, thereby driving the cleaning rod to rotate in the depth direction of the drill bucket. The cleaning rod scrapes off the mud adhering to the inner wall of the drill bucket. At this time, since a limit block is set on the rotating rod, the cleaning rod will not continue to slide in the length direction of the rotating rod, ensuring that the cleaning rod is always in contact with the inner wall of the drill bucket.

[0032] Optionally, the cleaning rod has a plurality of second tooth grooves at one end near the inner wall of the drill bucket, and scraping teeth are formed between two adjacent second tooth grooves.

[0033] By adopting the above technical solution, since the inner wall of the drill bit may be covered with relatively hard soil, in order to prevent the cleaning rod from being unable to continue rotating after touching the relatively hard soil, a second tooth groove is opened on the cleaning rod so that the scraping teeth can scrape off and clean the soil adhering to the drill bit. The relatively hard soil may exist in the second tooth groove so as not to affect the rotation of the cleaning rod.

[0034] Secondly, this application also provides a rotary drilling and grouting pile construction process, characterized by the following steps:

[0035] S1: Drilling operation:

[0036] The rotary drilling rig drives the drill bucket to rotate, and the first saw teeth of the drill bucket drill holes in the foundation until the required height of the hole is formed;

[0037] S2: Raise the drill bit:

[0038] The rotary drilling rig moves the drill bit out of the borehole;

[0039] S3: Clean the drill bit:

[0040] The rotation of the first rotating shaft drives the first bevel gear and the second bevel gear to rotate, so as to move the cleaning rod out of the receiving groove. The first rotating shaft rotates until the first stop block contacts the second stop block, further driving the cleaning rod to rotate in the radial direction of the drill bucket, and the cleaning rod cleans the mud adhering to the inner wall of the drill bucket.

[0041] By adopting the above technical solution, when in use, the rotary drilling rig drives the drill bucket to drill a hole in the foundation. After drilling to the required depth, the drill bucket is removed from the hole. Soil will adhere to the inner wall of the drill bucket. The motor drives the first rotating shaft to rotate, which drives the sliding seat to slide along the length of the rotating rod through the first bevel gear and the second bevel gear. This further drives the cleaning rod to slide out of the receiving groove and into contact with the inner wall of the drill bucket. When the first rotating shaft continues to rotate, when the first stop block contacts the second stop block, it drives the first rotating cylinder to rotate. This further drives the second rotating cylinder and the cleaning rod to rotate, so that the cleaning rod can scrape and clean the soil on the inner wall of the drill bucket.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] This application uses a cleaning rod and a drill bit to drill into the foundation. When the drill bit has drilled to a certain depth, the soil will be further drilled into the drill bit. When the drill bit is full of soil, the soil will be poured out by its own weight. However, some soil will still adhere to the inner wall of the drill bit. The cleaning rod rotates along the depth direction of the drill bit to clean the soil adhering to the inner wall of the drill bit. When the cleaning rod is not needed, it is located in the receiving groove, so as not to affect the drill bit's drilling into the foundation, and also to reduce the damage to the cleaning rod caused by excessive soil accumulation in the drill bit during drilling.

[0044] This application, by setting a sliding component, allows the cleaning rod to have movable space between itself and the sliding seat in the radial direction of the drill bit, so that the cleaning rod can rotate smoothly when it comes into contact with soil of a certain thickness.

[0045] This application, by setting the linkage between the first drive component and the second drive component, enables the cleaning rod to slide out into the receiving groove first, and then rotate along the depth direction of the drill bucket. Moreover, it enables the cleaning rod to be reset when the drill bucket is not being cleaned. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the drill bucket structure of this application;

[0047] Figure 2 This is a schematic diagram of the structure of the cleaning component in this application;

[0048] Figure 3 This is a schematic diagram of the structure of the first driving component of this application;

[0049] Figure 4 This is a schematic diagram of the sliding component and the limiting component of this application;

[0050] Figure 5 This is a schematic diagram of the structure of the second driving component of this application;

[0051] Figure 6This is a schematic diagram of the cleaning rod in this application.

[0052] Explanation of reference numerals in the attached drawings: 1. Drill bucket; 11. First tooth groove; 12. First saw tooth; 13. Receiving groove; 2. Cleaning assembly; 21. Cleaning rod; 211. Water spray hole; 212. Second tooth groove; 213. Scraper tooth; 214. Water inlet pipe; 22. Sliding seat; 3. First drive assembly; 31. First rotating shaft; 32. First bevel gear; 33. Second bevel gear; 34. Rotating rod; 35. Motor; 4. Limiting assembly; 41. Limiting block; 42. First elastic element; 5. Sliding assembly; 51. First telescopic rod; 52. Second elastic element; 6. Second drive assembly; 61. First rotating cylinder; 611. Mounting ring; 62. Second rotating cylinder; 621. Perforation; 63. First stop block; 64. Second stop block; 65. First mounting seat; 66. Second mounting seat. Detailed Implementation

[0053] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0054] This application discloses a rotary drilling device. (Refer to...) Figure 1 and Figure 2 The rotary drilling equipment includes a drill bucket 1, a cleaning component 2, and a first drive component 3. One end of the drill bucket 1 is provided with a plurality of first tooth grooves 11 along its circumferential direction, and a first saw tooth 12 is formed between two adjacent first tooth grooves 11. The drill bucket 1 is rotatably mounted on the rotary drilling equipment so as to drill holes in the foundation by the saw tooth. The cleaning component 2 is located inside the drill bucket 1. The cleaning component 2 includes a cleaning rod 21. The inner wall of the drill bucket 1 is provided with a receiving groove 13 along the depth direction of the drill bucket 1. The cleaning rod 21 is located in the receiving groove 13. The cleaning rod 21 is slidably connected to the drill bucket 1 along the radial direction of the drill bucket 1. The cleaning rod 21 is rotatably connected to the drill bucket 1. The cleaning rod 21 is parallel to the depth direction of the drill bucket 1 along the rotation axis of the drill bucket 1. In this embodiment, the drill bucket 1 is cylindrical.

[0055] Reference Figure 1 and Figure 2 The drill bit 1 drills a hole into the foundation. After drilling to a certain depth, soil will be further drilled into the drill bit 1. When the drill bit 1 is full of soil, the soil will be poured out by its own weight. However, some soil will still adhere to the inner wall of the drill bit 1. By setting up a cleaning rod 21, when the cleaning rod 21 is not needed, it is located in the receiving groove 13, so as not to affect the drill bit's drilling into the foundation, and also to reduce the accumulation of too much soil in the drill bit 1 during drilling, which would squeeze the cleaning rod 21 and cause damage to it. When the cleaning rod 21 is needed, it is slid along the radial direction of the drill bit 1 to the outside of the receiving groove 13, and rotated along the depth direction of the hopper to scrape off the soil adhering to the inner wall of the drill bit 1.

[0056] Reference Figure 2 and Figure 3 The first drive assembly 3 is connected to the cleaning rod 21 to drive the cleaning rod 21 to slide along the radial direction of the drill bucket 1. The first drive assembly 3 includes a first rotating shaft 31, a first bevel gear 32, a second bevel gear 33, and a rotating rod 34. The first rotating shaft 31 is parallel to the depth direction of the drill bucket 1 and is rotatably connected to the drill bucket 1. The first bevel gear 32 is coaxially sleeved on the first rotating shaft 31, and the second bevel gear 33 is rotatably connected to the drill bucket 1. The second bevel gear 33 is parallel to the radial direction of the drill bucket 1 along the rotation axis of the drill bucket 1. The rotating rod 34 is set parallel to the radial direction of the drill bucket 1. The second bevel gear 33 is sleeved on the rotating rod 34. The cleaning rod 21 is directly or indirectly connected to the rotating rod 34 and slides along the length of the rotating rod 34. In this embodiment, the rotating rod 34 is a screw. The first rotating shaft 31 rotates along the depth direction of the drill bucket 1 to drive the first bevel gear 32 and the second bevel gear 33 to rotate, which in turn drives the rotating rod 34 to rotate along the radial direction of the drill bucket 1, thereby driving the cleaning rod 21 to slide along the length of the rotating rod 34 so that the cleaning rod 21 slides out of the receiving groove 13, which facilitates the subsequent cleaning of the soil on the inner wall of the drill bucket 1.

[0057] Reference Figure 3 In order to drive the first rotating shaft 31 to rotate, the first drive assembly 3 also includes a motor 35. The housing of the motor 35 is fixedly connected to the inner top wall of the drill bucket 1, and the output shaft of the motor 35 is coaxially fixedly connected to the first rotating shaft 31.

[0058] Reference Figure 4 When cleaning the inner wall of the drill bucket 1, the cleaning rod 21 needs to contact the inner wall of the drill bucket 1. Therefore, the cleaning rod 21 needs to slide along the radial direction of the drill bucket 1 until it contacts the inner wall of the drill bucket 1. For this purpose, the rotary drilling equipment also includes a limiting component 4, which includes a limiting block 41. The limiting block 41 is fixedly sleeved on the rotating rod 34. The limiting block 41 is located on the rotating rod 34 at a position without threads. The limiting block 41 limits the sliding of the cleaning rod 21 along the length of the rotating rod 34. When the rotating rod 34 rotates and drives the cleaning rod 21 to slide along the length of the rotating rod 34, the cleaning rod 21 will no longer slide along the length of the rotating rod 34 when it contacts the limiting block 41. At this time, one side of the cleaning rod 21 is in contact with the inner wall of the drill bucket 1.

[0059] Reference Figure 3 and Figure 4Since the soil adhering to the inner wall of the drill bucket 1 may have a certain thickness, when the cleaning rod 21 comes into contact with soil of a certain thickness, in order not to affect the rotation of the cleaning rod 21 along the depth direction of the drill bucket 1, the cleaning rod 21 is connected to the rotating rod 34 through the sliding seat 22. The sliding seat 22 is sleeved on the rotating rod 34 and slides along the length of the rotating rod 34. The sliding seat 22 is located on the side of the limiting block 41 close to the cleaning rod 21. The cleaning rod 21 is slidably connected to the sliding seat 22 along the radial direction of the drill bucket 1. So that when the cleaning rod 21 comes into contact with soil of a certain thickness, the cleaning rod 21 can have space to slide along the radial direction of the drill bucket 1, so that the cleaning rod 21 can still rotate smoothly along the depth direction of the drill bucket 1.

[0060] Reference Figure 4 In order to limit the sliding of the sliding seat 22 along the length of the rotating rod 34, the limiting component 4 also includes a first elastic element 42. The extension and retraction direction of the first elastic element 42 is parallel to the radial direction of the drill bit 1. The first elastic element 42 is fixedly connected between the sliding seat 22 and the limiting block 41. In this embodiment, the first elastic element 42 is a compression spring. When the sliding seat 22 slides along the length of the rotating rod 34 toward the side closer to the limiting block 41, the first elastic element 42 is compressed so that the sliding of the sliding seat 22 along the length of the rotating rod 34 is limited by the limiting block 41 and the first elastic element 42.

[0061] Reference Figure 4 In order to drive the cleaning rod 21 to slide along the sliding seat 22 in the radial direction of the drill bucket 1, a sliding assembly 5 is provided between the sliding seat 22 and the cleaning rod 21. The sliding assembly 5 includes a first telescopic rod 51. The telescopic direction of the first telescopic rod 51 is parallel to the radial direction of the drill bucket 1. The movable section of the first telescopic rod 51 is fixedly connected to the cleaning rod 21, and the fixed section of the first telescopic rod 51 is fixedly connected to the sliding seat 22. The ends of the fixed section and the movable section of the first telescopic rod are slidably connected so that the distance between the sliding seat 22 and the cleaning rod 21 can be adjusted by setting the first telescopic rod 51, and the first telescopic rod 51 can support the cleaning rod 21.

[0062] Reference Figure 4To ensure that the cleaning rod 21 is always in contact with the soil adhering to the inner wall of the drill bucket 1, the sliding assembly 5 also includes a second elastic element 52. The second elastic element 52 is sleeved on the movable section of the first telescopic rod 51 and is fixedly connected between the sliding seat 22 and the fixed section of the first telescopic rod 51. Under recoverable deformation, the second elastic element 52 has a force that drives the cleaning rod 21 to move away from the sliding seat 22. In this embodiment, the second elastic element 52 is a compression spring. When the cleaning rod 21 rotates along the depth direction of the drill bucket 1, if the cleaning rod 21 comes into contact with soil of a certain thickness, under the action of the second elastic element 52 and the first telescopic rod 51, the second elastic element 52 is in a compressed state, and the cleaning rod 21 slides towards the side closer to the sliding seat 22. When the cleaning rod 21 passes through a thicker layer of soil, the second elastic element 52 changes from a compressed state to a normal state to ensure that the cleaning rod 21 is always in contact with the soil adhering to the inner wall of the drill bucket 1 to scrape off the soil.

[0063] Reference Figure 5 In order to drive the cleaning rod 21 to rotate in the depth direction of the drill bucket 1, the rotary drilling equipment also includes a second drive assembly 6 for driving the cleaning rod 21 to rotate. The second drive assembly 6 includes a first rotating cylinder 61, a second rotating cylinder 62, a first stop block 63, and a second stop block 64. The first rotating cylinder 61 is parallel to the depth direction of the drill bucket 1. The first rotating cylinder 61 is sleeved on the first rotating shaft 31 and rotatably connected to the first rotating shaft 31. The first rotating cylinder 61 is connected to the inner wall of the drill bucket 1 through a first mounting seat 65. Specifically, the first mounting seat 65 is fixedly connected to the inner wall of the drill bucket 1. The first rotating cylinder 61 passes through the first mounting seat 65. The first rotating cylinder 61 is sleeved with a mounting ring 611. The mounting ring 611 is located on the top of the first mounting seat 65. The first rotating shaft 31 is connected to the first rotating cylinder 61 through a second mounting seat 66.

[0064] Reference Figure 5 The second rotating cylinder 62 is parallel to the radial direction of the drill bucket 1, and one end of the second rotating cylinder 62 is fixedly connected to the end of the first rotating cylinder 61 away from the top wall of the drill bucket 1. The side of the second rotating cylinder 62 away from the first rotating cylinder 61 is provided with a through hole 621 to accommodate the passage of the first telescopic rod 51. When the second elastic element 52 and the first elastic element 42 are both in the normal state, there is a space between the end of the second rotating cylinder 62 near the inner wall of the drill bucket 1 and the inner side wall of the drill bucket 1. The end of the second rotating cylinder 62 connected to the first rotating cylinder 61 is connected. The rotating rod 34 is located inside the second rotating cylinder 62, and the outer peripheral wall of the limiting block 41 is in contact with the inner peripheral wall of the second rotating cylinder 62. The outer peripheral wall of the sliding seat 22 is in contact with the inner peripheral wall of the second rotating cylinder 62. A first stop block 63 is fixedly connected to the first rotating shaft 31, and a second stop block 64 is fixedly connected to the inner wall of the first rotating cylinder 61. When the first rotating shaft 31 rotates, the first stop block 63 and the second stop block 64 abut against each other.

[0065] Reference Figure 5 When the first stop 63 is in its initial position, the cleaning rod 21 is located in the receiving groove 13. When the motor 35 drives the first rotating shaft 31 to rotate, it drives the first stop 63 to rotate. At this time, the first stop 63 has not yet contacted the second stop 64. The first rotating shaft 31 drives the rotating rod 34 to rotate in the radial direction of the drill bucket 1 through the first bevel gear 32 and the second bevel gear 33. This drives the first sliding seat 22 to slide along the length of the rotating rod 34, thereby driving the cleaning rod 21 to slide along the length of the rotating rod 34 to the outside of the receiving groove 13, so that the cleaning rod 21 is in contact with the drill bucket 1. When the inner wall of the bucket 1 comes into contact, the first stop block 63 continues to rotate until it abuts against the second stop block 64, which drives the first rotating cylinder 61 to rotate along the depth direction of the bucket 1 and the second rotating cylinder 62 to rotate along the depth direction of the bucket 1, thereby driving the cleaning rod 21 to rotate along the depth direction of the bucket 1. The cleaning rod 21 scrapes off the mud adhering to the inner wall of the bucket 1. At this time, since the rotating rod 34 is equipped with a limit block 41, the cleaning rod 21 will not continue to slide along the length direction of the rotating rod 34, so as to ensure that the cleaning rod 21 is always in contact with the inner wall of the bucket 1.

[0066] Reference Figure 5 When cleaning the inside of the drill bucket 1 is not required, or when drilling is required, the cleaning rod 21 needs to be reset to the receiving groove 13. The motor 35 drives the first rotating shaft 31 to rotate in the opposite direction, and the first stop 63 separates from the second stop 64. The first rotating cylinder 61 and the second rotating cylinder 62 will not rotate along the depth direction of the drill bucket 1, that is, the cleaning rod 21 will not continue to rotate. When the first stop 63 rotates back to the initial position, it drives the first bevel gear 32 and the second bevel gear 33 to rotate. Furthermore, through the rotating rod 34, it drives the sliding seat 22 to slide along the length of the rotating rod 34, so as to drive the cleaning rod 21 to move into the receiving groove 13, so as not to affect the subsequent drilling operation.

[0067] Reference Figure 5 and Figure 6 In order to improve the cleaning effect of the cleaning rod 21 on the inner wall of the drill bucket 1, the thickness of the cleaning rod 21 gradually decreases towards the end away from the second rotating cylinder 62, so that the side of the cleaning rod 21 away from the second rotating cylinder 62 is as close as possible to the inner wall of the drill bucket 1, thereby achieving a better scraping and cleaning effect.

[0068] Reference Figure 6In addition, since the inner wall of the drill bucket 1 may be covered with relatively hard soil, in order to prevent the cleaning rod 21 from being unable to continue rotating after touching the hard soil, the end of the cleaning rod 21 near the inner wall of the drill bucket 1 is provided with multiple second tooth grooves 212 at intervals. A scraping tooth 213 is formed between two adjacent second tooth grooves 212 so as to scrape and clean the soil adhering to the drill bucket 1. The cleaning rod 21 has a water spray hole 211 on the groove wall of the second tooth groove 212. A water inlet pipe 214 is connected to one side of the cleaning rod 21. Water enters through the water inlet pipe 214 and is sprayed onto the inner wall of the drill bucket 1 through the water spray hole 211 to increase the wetness of the soil and make it easier for the cleaning rod 21 to scrape the soil.

[0069] The implementation principle of a rotary drilling equipment according to an embodiment of this application is as follows: When in use, the rotary drilling equipment drives the drill bucket 1 to drill a hole in the foundation. After drilling to the required depth, the drill bucket 1 moves out of the hole. Soil will adhere to the inner wall of the drill bucket 1. The motor 35 drives the first rotating shaft 31 to rotate. Through the first bevel gear 32 and the second bevel gear 33, the sliding seat 22 is driven to slide along the length of the rotating rod 34. This further drives the cleaning rod 21 to slide out of the receiving groove 13 and fit against the inner wall of the drill bucket 1. When the first rotating shaft 31 continues to rotate, when the first stop 63 contacts the second stop 64, the first rotating cylinder 61 is driven to rotate. This further drives the second rotating cylinder 62 and the cleaning rod 21 to rotate, so that the cleaning rod 21 can scrape and clean the soil on the inner wall of the drill bucket 1. The cleaning rod 21 is provided with multiple water spray holes 211. Water is sprayed from the water spray holes 211 to increase the wetness of the soil, making it easier for the cleaning rod 21 to scrape the soil.

[0070] The cleaning rod 21 needs to be reset into the receiving groove 13. The motor 35 drives the first rotating shaft 31 to rotate in the opposite direction. The first stop 63 and the second stop 64 separate. The first rotating cylinder 61 and the second rotating cylinder 62 will not rotate along the depth direction of the drill bucket 1. That is, the cleaning rod 21 will not continue to rotate. When the first stop 63 rotates in the opposite direction to the initial position, it drives the first bevel gear 32 and the second bevel gear 33 to rotate. Furthermore, through the rotating rod 34, it drives the sliding seat 22 to slide along the length direction of the rotating rod 34, so as to drive the cleaning rod 21 to move into the receiving groove 13.

[0071] This application also discloses a rotary drilling and grouting pile construction process, including the following steps:

[0072] S1: Drilling operation:

[0073] The rotary drilling rig drives the drill bucket 1 to rotate, and the first saw tooth 12 of the drill bucket 1 drills a hole in the foundation until the required height of the hole is formed.

[0074] S2: Lifting drill bit 1:

[0075] The rotary drilling rig moves the drill bit out of the borehole;

[0076] S3: Cleaning Drill Bucket 1:

[0077] The rotation of the first rotating shaft 31 drives the first bevel gear 32 and the second bevel gear 33 to rotate, so as to move the cleaning rod 21 out of the receiving groove 13. The first rotating shaft 31 rotates until the first stop 63 contacts the second stop 64, which further drives the cleaning rod 21 to rotate along the depth direction of the drill bucket 1, and the cleaning rod 21 cleans the mud adhering to the inner wall of the drill bucket 1.

[0078] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rotary drilling device, characterized in that: It comprises a drill bucket (1), a drill bit, a cleaning assembly (2) and a first driving assembly (3); One end of the drill bucket (1) is provided with a plurality of first tooth grooves (11) along its circumferential direction, and a first sawtooth (12) is formed between two adjacent first tooth grooves (11); The cleaning assembly (2) is located in the drilling bucket (1), and the cleaning assembly (2) comprises a cleaning rod (21). The inner wall of the drilling bucket (1) is provided with a receiving groove (13) along the depth direction of the drilling bucket (1). The cleaning rod (21) is located in the receiving groove (13). The cleaning rod (21) is slidably connected to the drilling bucket (1) along the radial direction of the drilling bucket (1). The cleaning rod (21) is rotatably connected to the drilling bucket (1). The cleaning rod (21) is parallel to the depth direction of the drilling bucket (1) along the rotation axis of the drilling bucket (1); The first driving assembly (3) is connected to the cleaning rod (21) so as to drive the cleaning rod (21) to slide along the radial direction of the drilling bucket (1); The first driving assembly (3) comprises a first rotating shaft (31), a first bevel gear (32), a second bevel gear (33) and a rotating rod (34); The first rotating shaft (31) is parallel to the depth direction of the drilling bucket (1), and the first rotating shaft (31) is rotatably connected to the drilling bucket (1); The first bevel gear (32) is coaxially sleeved on the first rotating shaft (31), the second bevel gear (33) is rotationally connected to the drilling bucket (1), and the rotation axis of the second bevel gear (33) is parallel to the radial direction of the drilling bucket (1); The rotating rod (34) is arranged parallel to the radial direction of the drill bucket (1); the second bevel gear (33) is sleeved on the rotating rod (34); the cleaning rod (21) is directly or indirectly sleeved on the rotating rod (34); and the cleaning rod (21) slides along the length direction of the rotating rod (34); The cleaning rod (21) is connected to the rotating rod (34) via a sliding seat (22); the sliding seat (22) is sleeved on the rotating rod (34) and slides along the length direction of the rotating rod (34); A sliding assembly (5) is provided between the sliding seat (22) and the cleaning rod (21), and the sliding assembly (5) comprises a first telescopic rod (51), the telescopic direction of the first telescopic rod (51) is parallel to the radial direction of the drilling bucket (1), the movable section of the first telescopic rod (51) is fixedly connected to the cleaning rod (21), the fixed section of the first telescopic rod (51) is fixedly connected to the sliding seat (22), and the fixed section and the movable section of the first telescopic rod (51) are slidably connected at one end thereof; It also includes a second driving assembly (6) for driving the cleaning rod (21) to rotate, wherein the second driving assembly (6) includes a first rotating cylinder (61), a second rotating cylinder (62), a first stopper (63) and a second stopper (64); The first rotating cylinder (61) is parallel to the depth direction of the drilling bucket (1), the first rotating cylinder (61) is connected to the drilling bucket (1) via a first mounting seat (65), the first rotating shaft (31) is located in the first rotating cylinder (61), and the first rotating cylinder (61) is rotatably connected to the first rotating shaft (31); The second rotating cylinder (62) is parallel to the radial direction of the drilling bucket (1), and one end of the second rotating cylinder (62) is fixedly connected to one end of the first rotating cylinder (61), and the second rotating cylinder (62) is communicated with one end connected to the first rotating cylinder (61), the rotating rod (34) is located in the second rotating cylinder (62), and a through hole (621) for accommodating the first telescopic rod (51) to pass through is opened on the side of the second rotating cylinder (62) away from the first rotating cylinder (61), and the outer peripheral wall of the sliding seat (22) is in contact with the inner peripheral wall of the second rotating cylinder (62); The first stopper (63) is fixedly connected to the first rotating shaft (31), and the second stopper (64) is fixedly connected to the inner wall of the first rotating cylinder (61); when the first rotating shaft (31) rotates, the second stopper (64) contacts the first stopper (63), and the first rotating cylinder (61) rotates along the drilling bucket (1).

2. The rotary drilling equipment according to claim 1, characterized in that: It also comprises a limiting assembly (4), the limiting assembly (4) comprising a limiting block (41), the limiting block (41) being fixedly sleeved on the rotating rod (34), the limiting block (41) limiting the sliding of the cleaning rod (21) along the length direction of the rotating rod (34).

3. The rotary drilling equipment according to claim 2, characterized in that: The limiting assembly (4) further comprises a first elastic member (42), the extension direction of the first elastic member (42) being parallel to the length direction of the rotating rod (34), one end of the first elastic member (42) being fixedly connected to the limiting block (41), and the other end being directly or indirectly connected to the cleaning rod (21).

4. The rotary drilling equipment according to claim 3, characterized in that: The first elastic member (42) is fixedly connected between the sliding seat (22) and the limiting block (41), and the cleaning rod (21) is slidably connected to the sliding seat (22) along the radial direction of the drilling bucket (1).

5. The rotary drilling equipment according to claim 1, characterized in that: The sliding assembly (5) further comprises a second elastic member (52), the second elastic member (52) being sleeved on the fixed section of the first telescopic rod (51), the second elastic member (52) being fixedly connected between the sliding seat (22) and the movable section of the first telescopic rod (51), and the second elastic member (52) having a force to drive the cleaning rod (21) to move toward a side away from the sliding seat (22) under a recoverable deformation.

6. The rotary drilling equipment according to claim 1, characterized in that: A plurality of second tooth grooves (212) are formed at one end of the cleaning rod (21) close to the inner wall of the drilling bucket (1), and scraping teeth (213) are formed between two adjacent second tooth grooves (212).

7. A rotary bored pile construction process, according to a rotary drilling equipment according to any one of claims 1 to 6, characterized in that: The steps include: S1: Drilling construction: The rotary drilling rig equipment drives the drill bucket (1) to rotate, and the first saw teeth (12) of the drill bucket (1) drill a hole in the foundation until a hole of a desired height is formed; S2: Raise the drilling bucket (1): The rotary drilling rig equipment drives the drill bit to move out of the borehole; S3: Cleaning the drill bucket (1): The first rotating shaft (31) rotates to drive the first bevel gear (32) and the second bevel gear (33) to rotate, so as to move the cleaning rod (21) out of the accommodating groove (13); the first rotating shaft (31) rotates until the first stopper (63) contacts the second stopper (64), further driving the cleaning rod (21) to rotate along the radial direction of the drilling bucket (1), so that the cleaning rod (21) cleans the dirt adhered to the inner wall of the drilling bucket (1).

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