Rotary drilling equipment and rotary drilling cast-in-situ bored pile construction process thereof

Abstract

The invention relates to rotary excavating drilling equipment and a rotary excavating cast-in-situ bored pile construction technology thereof, and relates to the technical field of building engineering construction, and the rotary excavating drilling equipment comprises a drilling bucket, a drill bit, a cleaning assembly and a first driving assembly; a plurality of first tooth grooves are formed in one end of the drilling bucket in the circumferential direction of the drilling bucket, and first sawteeth are formed between every two adjacent first tooth grooves. The cleaning assembly is located in the drilling bucket and comprises a cleaning rod, a containing groove is formed in the inner wall of the drilling bucket in the depth direction of the drilling bucket, the cleaning rod is located in the containing groove, the cleaning rod is slidably connected to the drilling bucket in the radial direction of the drilling bucket, the cleaning rod is rotationally connected to the drilling bucket, and the cleaning rod is parallel to the depth direction of the drilling bucket along the rotating axis of the drilling bucket; the first driving assembly is connected to the cleaning rod and used for driving the cleaning rod to slide in the radial direction of the drilling bucket. The drilling device has the effect of scraping soil gathered in the drilling bucket when drilling is completed.

Description

Technical Field

[0001] The present application relates to the technical field of building engineering construction, and in particular to a rotary drilling device and a rotary drilling cast-in-place pile construction process thereof. Background Art

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

[0003] Under the relevant technology, the existing rotary drilling equipment usually uses a drill bucket with an opening to complete the drilling operation. The drill bucket consists of a bucket body and a bucket door, wherein the bottom of the bucket body is provided with an opening and is equipped with a bucket door for closing the opening. When drilling, the drill bucket follows the rotation of the drill rod into the soil and collects the soil inside the bucket body. When the drill bucket is loaded, it will be pulled out of the pile hole. At this time, the bucket door is driven to open and the soil falls out by its own weight. In addition, there are many other design methods, such as using a corrugated inner wall or a bucket door equipped with reinforcing ribs to try to improve the problems of traditional drill buckets, but these designs mainly focus on improving the strength of the bucket door or optimizing the shape of the drill bucket.

[0004] In the above-mentioned related technologies, the sticky soil is easily adsorbed on the inner wall of the drill bucket, which makes it difficult for the soil to be detached, seriously affecting the effect of soil unloading. This phenomenon has become one of the key factors restricting the further improvement of the performance of existing rotary drilling equipment. Summary of the invention

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

[0006] In the first aspect, the present application provides a rotary drilling device, which adopts the following technical solution: A rotary drilling device, characterized in that it comprises 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 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. 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. The cleaning rod is slidably connected to the drill bucket along the radial direction of the drill bucket, and 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; The first driving assembly is connected to the cleaning rod to drive the cleaning rod to slide along the radial direction of the drilling bucket.

[0007] By adopting the above technical scheme, the present application sets a cleaning rod and a drill bucket, and the drill bucket is used to drill a hole in the foundation. After drilling into the foundation to a certain depth, the soil will further drill into the drill bucket. When the drill bucket is full of soil, the soil is poured out of the drill bucket under the action of its own weight, but some soil will still adhere to the inner wall of the drill bucket. The cleaning rod rotates along the depth direction of the drill bucket to clean the soil adhered to the inner wall of the drill bucket. When the cleaning rod is not needed, the cleaning rod is located in the accommodating groove, thereby not affecting the drill bit's drilling of the foundation, and also reducing the possibility of excessive soil accumulation in the drill bucket squeezing the cleaning rod and causing damage to the cleaning rod when the drill bucket is drilling.

[0008] Optionally, the first driving assembly includes a first rotating shaft, a first bevel gear, a second bevel gear and a rotating rod; The first rotating shaft is parallel to the depth direction of the drilling bucket, and the first rotating shaft is rotatably connected to the drilling bucket; The first bevel gear is coaxially sleeved on the first rotating shaft, the second bevel gear is rotationally connected to the drill bucket, and the second bevel gear is parallel to the radial direction of the drill bucket along the rotation axis of the drill bucket; The rotating rod is arranged parallel to the radial direction of the drill bucket, 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 rod length direction of the rotating rod.

[0009] By adopting the above technical solution, by setting up the first driving 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, and further drives the rotating rod to rotate along the radial direction of the drill bucket, thereby driving the cleaning rod to slide along the rod length direction of the rotating rod, so that the cleaning rod slides out of the accommodating groove, which is convenient for cleaning the soil on the inner wall of the drill bucket later.

[0010] Optionally, a limiting component is further included, wherein the limiting component includes a limiting block, and the limiting block is fixedly sleeved on the rotating rod, and the limiting block limits the sliding of the cleaning rod along the length direction of the rotating rod.

[0011] 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 the cleaning rod contacts the inner wall of the drill bucket. By setting a limit block, the limit 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.

[0012] Optionally, the limiting assembly further includes a first elastic member, the extension direction of the first elastic member is parallel to the length direction of the rotating rod, one end of the first elastic member is fixedly connected to the limiting block, and the other end is directly or indirectly connected to the cleaning rod.

[0013] By adopting the above technical solution, when the cleaning rod slides along the length direction of the rotating rod toward the side close to the limit block, the first elastic member is compressed so that the limit block and the first elastic member limit the sliding of the sliding seat along the length direction of the rotating rod.

[0014] 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 in the length direction, the first elastic member is fixedly connected between the sliding seat and the limit block, and the cleaning rod is slidably connected to the sliding seat along the radial direction of the drill bucket.

[0015] By adopting the above technical solution, since the soil adhered to the inner wall of the drill bucket may have a certain thickness, when the cleaning rod comes into contact with the soil having 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 the soil having 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.

[0016] Optionally, a sliding assembly is provided between the sliding seat and the cleaning rod, and the sliding assembly includes a first telescopic rod, the telescopic direction of the first telescopic rod is parallel to the radial direction of the drilling bucket, the movable section of the first telescopic rod is fixedly connected to the cleaning rod, the fixed section of the first telescopic rod is fixedly connected to the sliding seat, and the ends of the fixed section and the movable section of the first telescopic section are slidably connected.

[0017] 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 provided so that the cleaning rod has space to move along the radial direction of the drill bucket, so that the cleaning rod can rotate smoothly.

[0018] Optionally, the sliding assembly also includes a second elastic member, which is sleeved on the fixed section of the first telescopic rod, and the second elastic member is fixedly connected between the sliding seat and the movable section of the first telescopic rod, and the second elastic member has a force to drive the cleaning rod to move away from the sliding seat under recoverable deformation.

[0019] By adopting the above technical scheme, in order to ensure that the cleaning rod can always be in contact with the soil adhered to the inner wall of the drill bucket, even if the cleaning rod can be reset, by providing a second elastic member, if the cleaning rod contacts soil with a certain thickness, under the action of the second elastic member and the first telescopic rod, the second elastic member is in a compressed state, and the cleaning rod slides toward the side close to the sliding seat. When the cleaning rod passes through thicker soil, the second elastic member changes from a compressed state to a normal state, so as to ensure that the cleaning rod is always in contact with the soil adhered to the inner wall of the drill bucket to scrape off the soil.

[0020] Optionally, it further comprises a second driving assembly for driving the cleaning rod to rotate, wherein the second driving assembly comprises a first rotating cylinder, a second rotating cylinder, a first stopper and a second stopper; The first rotating cylinder is parallel to the depth direction of the drilling bucket, the first rotating cylinder is connected to the drilling bucket through a first mounting seat, the first rotating shaft is located in the first rotating cylinder, and the first rotating cylinder is rotatably connected to the first rotating shaft; The second rotating cylinder is parallel to the radial direction of the drilling bucket, and one end of the second rotating cylinder is fixedly connected to one end of the first rotating cylinder, and the second rotating cylinder is communicated with one end connected to the first rotating cylinder, the rotating rod is located in the second rotating cylinder, and a through hole for accommodating the first telescopic rod to pass through is opened on a side of the second rotating cylinder away from the first rotating cylinder, and the outer peripheral wall of the sliding seat is in contact with the inner peripheral wall of the second rotating cylinder; The first stopper is fixedly connected to the first rotating shaft, and the second stopper is fixedly connected to the inner wall of the first rotating cylinder. When the first rotating shaft rotates, the second stopper contacts the first stopper, and the first rotating cylinder rotates along the drilling bucket.

[0021] By adopting the above technical scheme, in order to drive the cleaning rod to rotate in the depth direction of the drilling bucket, a second driving assembly is set, when the first stop is in the initial position, the cleaning rod is located in the accommodating groove, and when the motor drives the first rotating shaft to rotate, the first stop is driven to rotate. At this time, the first stop has not yet contacted the second stop, and the first rotating shaft drives the rotating rod to rotate in the radial direction of the drilling bucket through the first bevel gear and the second bevel gear, driving the first sliding seat to slide along the length direction of the rotating rod, thereby driving the cleaning rod to slide along the length direction of the rotating rod to the outside of the accommodating groove, so that the cleaning rod contacts the inner wall of the drilling bucket, and the first stop continues to rotate. When it rotates to abut against the second stop, it drives the first rotating cylinder to rotate in the depth direction of the drilling bucket, drives the second rotating cylinder to rotate in the depth direction of the drilling bucket, thereby driving the cleaning rod to rotate in the depth direction of the drilling bucket, and the cleaning rod is scraped off the mud adhered to the inner wall of the drilling bucket by the cleaning rod. At this time, due to the contact of the limit block set on the rotating rod, the cleaning rod will not continue to slide along the length direction of the rotating rod, so as to ensure that the cleaning rod is always in contact with the inner wall of the drilling bucket.

[0022] Optionally, a plurality of second tooth grooves are formed at one end of the cleaning rod close to the inner side wall of the drilling bucket, and scraping teeth are formed between two adjacent second tooth grooves.

[0023] By adopting the above technical solution, since the inner wall of the drill bucket may be adhered to harder soil, in order to prevent the cleaning rod from being unable to continue rotating after touching the harder soil, a second tooth groove is provided in the cleaning rod so that the scraping teeth can scrape and clean the soil adhered to the drill bucket. The harder soil may exist in the second tooth groove so as not to affect the rotation of the cleaning rod.

[0024] In a second aspect, the present application also provides a rotary bored pile construction process, which is characterized by comprising the following steps: S1: Drilling construction: The rotary drilling rig equipment drives the drill bucket to rotate, and the first sawtooth of the drill bucket drills a hole in the foundation until a hole of a required height is formed; S2: Raise the drill bucket: The rotary drilling rig equipment drives the drill bit to move out of the borehole; S3: Cleaning the Drill Bucket: 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 accommodating groove. The first rotating shaft rotates until the first stopper contacts the second stopper, further driving the cleaning rod to rotate along the radial direction of the drill bucket, so that the cleaning rod cleans the mud adhered to the inner wall of the drill bucket.

[0025] By adopting the above technical solution, when in use, the rotary drilling rig equipment drives the drill bucket to drill a hole in the foundation. After drilling to the required depth of the operation, the drill bucket moves out of the drill hole, and mud will adhere to the inner wall of the drill bucket. The motor drives the first rotating shaft to rotate, and drives the sliding seat to slide along the length direction of the rotating rod through the first bevel gear and the second bevel gear, and further drives the cleaning rod to slide out of the outside of the accommodating groove and fit 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, and further rotates through the second rotating cylinder and the cleaning rod, so that the cleaning rod can scrape and clean the mud on the inner wall of the drill bucket.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: The present application provides a cleaning rod and a drill bucket, and the drill bucket is used to drill a hole in the foundation. When the foundation is drilled to a certain depth, the soil will be further drilled into the drill bucket. When the drill bucket is full of soil, the soil is poured out by the drill bucket under the action of its own weight, but some soil will still adhere to the inner wall of the drill bucket. The cleaning rod rotates along the depth direction of the drill bucket to clean the soil adhered to the inner wall of the drill bucket. When the cleaning rod is not needed, the cleaning rod is located in the receiving groove, so as not to affect the drilling of the foundation by the drill bit, and also to reduce the soil accumulation in the drill bucket when the drill bucket is drilling, which squeezes the cleaning rod and causes damage to the cleaning rod; The present application provides a sliding assembly so that a movable space can be provided between the cleaning rod and the sliding seat in the radial direction of the drill bucket, so that the cleaning rod can rotate smoothly when it contacts soil with a certain thickness; The present application sets a linkage setting of the first drive assembly and the second drive assembly, so that the cleaning rod can first slide out to the accommodating groove and then rotate along the depth direction of the drilling bucket, and the cleaning rod can be reset when the drilling bucket is not cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the drill bucket structure of this application; Figure 2 It is a schematic diagram of the structure of the cleaning component of this application; Figure 3 is a schematic diagram of the structure of the first drive assembly of the present application; Figure 4 It is a structural schematic diagram of the sliding assembly and the limiting assembly of the present application; Figure 5 is a schematic diagram of the structure of the second drive assembly of the present application; Figure 6 It is a structural schematic diagram of the cleaning rod of the present application.

[0028] Explanation of the accompanying drawings: 1. Drill bucket; 11. First tooth groove; 12. First sawtooth; 13. Accommodating groove; 2. Cleaning assembly; 21. Cleaning rod; 211. Water spray hole; 212. Second tooth groove; 213. Scraping 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 member; 5. Sliding assembly; 51. First telescopic rod; 52. Second elastic member; 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 DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] The present application embodiment discloses a rotary drilling device. Figure 1 and Figure 2 The rotary drilling equipment includes a drill bucket 1, a cleaning assembly 2 and a first driving assembly 3; a plurality of first tooth grooves 11 are provided at one end of the drill bucket 1 along its circumferential direction, and a first sawtooth 12 is formed between two adjacent first tooth grooves 11, and the drill bucket 1 is rotatably mounted on the rotary drilling equipment so that the sawtooth can drill holes in the foundation; the cleaning assembly 2 is located in the drill bucket 1, and the cleaning assembly 2 includes a cleaning rod 21, and an accommodating groove 13 is provided on the inner wall of the drill bucket 1 along the depth direction of the drill bucket 1, and the cleaning rod 21 is located in the accommodating groove 13, and the cleaning rod 21 is slidably connected to the drill bucket 1 along the radial direction of the drill bucket 1, and the cleaning rod 21 is rotatably connected to the drill bucket 1, and 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; Reference Figure 1 and Figure 2 , the drill bucket 1 is used to drill a hole in the foundation. After drilling into a certain depth of the foundation, the soil will be further drilled into the drill bucket 1. When the drill bucket 1 is full of soil, the soil is poured out of the drill bucket 1 under the action of its own weight, but some soil will still adhere to the inner wall of the drill bucket 1. By setting a cleaning rod 21, when the cleaning rod 21 is not needed, the cleaning rod 21 is located in the receiving groove 13, so as not to affect the drilling of the foundation by the drill bit, and also reduce the soil accumulated in the drill bucket 1 when the drill bucket 1 is drilling, so as to squeeze the cleaning rod 21 and cause damage to the cleaning rod 21; when the cleaning rod 21 is needed, the cleaning rod 21 is slid along the radial direction of the drill bucket 1 to the outside of the receiving groove 13, and the cleaning rod 21 is rotated along the depth direction of the hopper, and the cleaning rod 21 is used to scrape off the soil adhered to the inner wall of the drill bucket 1; Reference Figure 2 and Figure 3The first driving assembly 3 is connected to the cleaning rod 21 to drive the cleaning rod 21 to slide along the radial direction of the drilling bucket 1. The first driving 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 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, and the second bevel gear 33 is rotatably connected to the drilling bucket 1, and the second bevel gear 33 is parallel to the radial direction of the drilling bucket 1 along the rotation axis of the drilling bucket 1; the rotating rod 34 is arranged parallel to the radial direction of the drilling 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 the cleaning rod 21 slides along the rod length direction 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 drilling bucket 1 to drive the first bevel gear 32 and the second bevel gear 33 to rotate, and further drives the rotating rod 34 to rotate along the radial direction of the drilling bucket 1, thereby driving the cleaning rod 21 to slide along the rod length direction of the rotating rod 34, so that the cleaning rod 21 slides out of the accommodating groove 13, so as to facilitate the subsequent cleaning of the soil on the inner wall of the drilling bucket 1.

[0031] Reference Figure 3 In order to drive the first rotating shaft 31 to rotate, the first driving assembly 3 also includes a motor 35. The housing of the motor 35 is fixedly connected to the top wall of the drilling bucket 1, and the output shaft of the motor 35 is coaxially fixedly connected to the first rotating shaft 31.

[0032] 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 the cleaning rod 21 contacts the inner wall of the drill bucket 1. For this purpose, the rotary drilling equipment also includes a limit assembly 4, and the limit assembly 4 also includes a limit block 41. The limit block 41 is fixedly sleeved on the rotating rod 34. The limit block 41 is arranged at a position on the rotating rod 34 where no thread is provided. The limit block 41 limits the sliding of the cleaning rod 21 along the length direction of the rotating rod 34. When the rotating rod 34 rotates to drive the cleaning rod 21 to slide along the length direction of the rotating rod 34, when the cleaning rod 21 contacts the limit block 41, the cleaning rod 21 no longer slides along the length direction of the rotating rod 34. At this time, one side of the cleaning rod 21 is in contact with the inner wall of the drill bucket 1.

[0033] Reference Figure 3 and Figure 4Since the soil adhered to the inner wall of the drilling bucket 1 may have a certain thickness, when the cleaning rod 21 contacts the soil with a certain thickness, in order not to affect the rotation of the cleaning rod 21 along the depth direction of the drilling 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 direction of the rotating rod 34, the sliding seat 22 is located on the side of the limit block 41 close to the cleaning rod 21, and the cleaning rod 21 is slidably connected to the sliding seat 22 along the radial direction of the drilling bucket 1; when the cleaning rod 21 contacts the soil with a certain thickness, the cleaning rod 21 can have space to slide along the radial direction of the drilling bucket 1, so that the cleaning rod 21 can still rotate smoothly along the depth direction of the drilling bucket 1.

[0034] Reference Figure 4 In order to limit the sliding of the sliding seat 22 along the length direction of the rotating rod 34, the limiting assembly 4 also includes a first elastic member 42. The extension direction of the first elastic member 42 is parallel to the radial direction of the drill bucket 1. The first elastic member 42 is fixedly connected between the sliding seat 22 and the limiting block 41. In this embodiment, the first elastic member 42 is a compression spring. When the sliding seat 22 slides along the length direction of the rotating rod 34 toward the side close to the limiting block 41, the first elastic member 42 is compressed, so that the limiting block 41 and the first elastic member 42 limit the sliding of the sliding seat 22 along the length direction of the rotating rod 34.

[0035] Reference Figure 4 In order to drive the cleaning rod 21 to slide along the sliding seat 22 in the radial direction of the drilling bucket 1, a sliding assembly 5 is provided between the sliding seat 22 and the cleaning rod 21, and the sliding assembly 5 includes a first telescopic rod 51, and 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, 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 section are slidably connected, so that by setting the first telescopic rod 51, the distance between the sliding seat 22 and the cleaning rod 21 can be adjusted, and the first telescopic rod 51 can support the cleaning rod 21.

[0036] Reference Figure 4The second elastic member 52 is connected to the movable section of the first telescopic rod 51, and the second elastic member 52 is fixedly connected between the sliding seat 22 and the fixed section of the first telescopic rod 51. The second elastic member 52 has a force to drive the cleaning rod 21 to move away from the sliding seat 22 under the recoverable deformation. In this embodiment, the second elastic member 52 is a compression spring. When the cleaning rod 21 rotates along the depth direction of the drilling bucket 1, if the cleaning rod 21 contacts the soil with a certain thickness, under the action of the second elastic member 52 and the first telescopic rod 51, the second elastic member 52 is in a compressed state, and the cleaning rod 21 slides toward the side close to the sliding seat 22. When the cleaning rod 21 passes through thicker soil, the second elastic member 52 changes from the compressed state to the normal state to ensure that the cleaning rod 21 is always in contact with the soil adhered to the inner wall of the drilling bucket 1 to scrape off the soil.

[0037] Reference Figure 5 In order to drive the cleaning rod 21 to rotate in the depth direction of the drilling bucket 1, the rotary drilling equipment also includes a second driving assembly 6 for driving the cleaning rod 21 to rotate. 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 sleeved on the first rotating shaft 31, and the first rotating cylinder 61 is rotatably connected to the first rotating shaft 31. The first rotating cylinder 61 is connected to the inner wall of the drilling bucket 1 through a first mounting seat 65. Specifically, the first mounting seat 65 is fixedly connected to the inner wall of the drilling bucket 1, the first rotating cylinder 61 is penetrated by the first mounting seat 65, and the first rotating cylinder 61 is sleeved with a mounting ring 611. The mounting ring 611 is arranged on the top of the first mounting seat 65, and the first rotating shaft 31 is connected to the first rotating cylinder 61 through the second mounting seat 66; Reference Figure 5 , 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 the end of the first rotating cylinder 61 away from the top wall of the drilling bucket 1, 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 when the second elastic member 52 and the first elastic member 42 are both in normal state, there is a space between the end of the second rotating cylinder 62 close to the inner wall of the drilling bucket 1 and the inner wall of the drilling bucket 1, and the second rotating cylinder 62 is connected to the end connected to the first rotating cylinder 61. The rotating rod 34 is located in the second rotating cylinder 62, and the outer peripheral wall of the limit block 41 is in contact with the inner peripheral wall of the second rotating cylinder 62, 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 first stopper 63 abuts against the second stopper 64; Reference Figure 5When the first stopper 63 is located at the 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, the first stopper 63 is driven to rotate. At this time, the first stopper 63 has not yet contacted the second stopper 64. The first rotating shaft 31 drives the rotating rod 34 to rotate along the radial direction of the drill bucket 1 through the first bevel gear 32 and the second bevel gear 33, driving the first sliding seat 22 to slide along the length direction of the rotating rod 34, thereby driving the cleaning rod 21 to slide along the length direction of the rotating rod 34 to the outside of the receiving groove 13, so that the cleaning rod 21 and the drill are in contact. The first stopper 63 continues to rotate until it contacts the inner wall of the drilling bucket 1. When it rotates to abut against the second stopper 64, it drives the first rotating cylinder 61 to rotate along the depth direction of the drilling bucket 1, and drives the second rotating cylinder 62 to rotate along the depth direction of the drilling bucket 1, thereby driving the cleaning rod 21 to rotate along the depth direction of the drilling bucket 1, and the cleaning rod 21 scrapes the soil adhered to the inner wall of the drilling bucket 1. At this time, since the limit block 41 is provided on the rotating rod 34, 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 drilling bucket 1; Reference Figure 5 When there is no need to clean the inside of the drill bucket 1, or when the drill bucket 1 is required to perform drilling operations, the cleaning rod 21 needs to be reset to the accommodating groove 13, and the motor 35 drives the first rotating shaft 31 to rotate in the opposite direction, and the first stopper 63 is separated from the second stopper 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 stopper 63 rotates in the opposite direction to the initial position, the first bevel gear 32 and the second bevel gear 33 are driven to rotate, and the sliding seat 22 is further driven by the rotating rod 34 to slide along the length direction of the rotating rod 34, so as to drive the cleaning rod 21 to move toward the accommodating groove 13, thereby not affecting the subsequent drilling operations.

[0038] Reference Figure 5 and Figure 6 In order to improve the cleaning effect of the cleaning rod 21 on the mud on the inner wall of the drill bucket 1, the thickness of the cleaning rod 21 itself gradually decreases toward 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 and the inner wall of the drill bucket 1 are in a state of connection as much as possible, thereby achieving a better scraping and cleaning effect.

[0039] Reference Figure 6In addition, since the inner wall of the drill bucket 1 may be adhered to relatively hard soil, in order to prevent the cleaning rod 21 from being unable to continue to rotate after touching the relatively hard soil, a plurality of second tooth grooves 212 are provided at one end of the cleaning rod 21 close to the inner wall of the drill bucket 1, and scraping teeth 213 are formed between two adjacent second tooth grooves 212, so that the scraping teeth 213 can scrape and clean the soil adhered to the drill bucket 1, and a water spray hole 211 is provided on the groove wall of the second tooth groove 212 of the cleaning rod 21, and a water inlet pipe 214 is connected to one side of the cleaning rod 21, and water is introduced from the water inlet pipe 214, and water is sprayed toward the inner wall of the drill bucket 1 from the water spray hole 211, so as to increase the wetness of the soil and facilitate the cleaning rod 21 to scrape the soil.

[0040] The implementation principle of a rotary drilling device in the embodiment of the present application is as follows: when in use, the rotary drilling rig equipment drives the drill bucket 1 to drill a hole in the foundation. After drilling to the required depth for the operation, the drill bucket 1 moves out of the drill hole, and soil adheres to the inner wall of the drill bucket 1. The motor 35 drives the first rotating shaft 31 to rotate, and drives the sliding seat 22 to slide along the rod length direction of the rotating rod 34 through the first bevel gear 32 and the second bevel gear 33, and further drives the cleaning rod 21 to slide out of the outer side of the accommodating groove 13 and fit with the inner wall of the drill bucket 1. When the first rotating shaft 31 continues to rotate, when the first stopper 63 contacts the second stopper 64, the first rotating cylinder 61 is driven to rotate, and further rotates through the second rotating cylinder 62 and the cleaning rod 21, so that the cleaning rod 21 can scrape and clean the soil on the inner wall of the drill bucket 1, and a plurality of water spray holes 211 are provided on the cleaning rod 21, and water is sprayed from the water spray holes 211 to increase the wetness of the soil, so that the cleaning rod 21 can scrape and clean the soil; The cleaning rod 21 needs to be reset to the accommodating groove 13, the motor 35 drives the first rotating shaft 31 to rotate in the opposite direction, the first stop block 63 is separated from the second stop block 64, the first rotating cylinder 61 and the second rotating cylinder 62 will not rotate along the depth direction of the drilling bucket 1, that is, the cleaning rod 21 will not continue to rotate. When the first stop block 63 rotates in the opposite direction to the initial position, the first bevel gear 32 and the second bevel gear 33 are driven to rotate, and the sliding seat 22 is further driven by the rotating rod 34 to slide along the length direction of the rotating rod 34 to drive the cleaning rod 21 to move toward the accommodating groove 13.

[0041] The present application also discloses a rotary bored pile construction process, comprising the following steps: S1: Drilling construction: The rotary drilling rig 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 drill bucket 1: The rotary drilling rig equipment drives the drill bit 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 stop block 63 contacts the second stop block 64, further driving the cleaning rod 21 to rotate along the depth direction of the drilling bucket 1, and the cleaning rod 21 cleans the mud adhered to the inner wall of the drilling bucket 1.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope 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).

2. The rotary drilling equipment according to claim 1, characterized in that: 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 second bevel gear (33) is parallel to the radial direction of the drilling bucket (1) along the rotation axis of the drilling bucket (1); The rotating rod (34) is arranged parallel to the radial direction of the drilling 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).

3. The rotary drilling equipment according to claim 2, 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).

4. The rotary drilling equipment according to claim 3, 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).

5. The rotary drilling equipment according to claim 4, characterized in that: 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 the rotating rod (34) slides in the length direction of the rod; the first elastic member (42) is fixedly connected between the sliding seat (22) and the limit block (41); the cleaning rod (21) is slidably connected to the sliding seat (22) along the radial direction of the drilling bucket (1).

6. The rotary drilling equipment according to claim 5, characterized in that: 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 first telescopic section fixed section and the movable section are slidably connected at one end thereof.

7. The rotary drilling equipment according to claim 6, 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.

8. The rotary drilling equipment according to claim 6, characterized in that: 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).

9. 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).

10. A rotary bored pile construction process, according to a rotary drilling equipment according to any one of claims 1 to 9, 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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