Well digging drill bit for constructional engineering

Abstract

The invention discloses a well digging drill bit for constructional engineering, and relates to the technical field of constructional engineering digging, the well digging drill bit comprises a mounting frame, a supporting frame is fixedly mounted on the top of the mounting frame, a clamping mechanism is fixedly mounted on the top of the supporting frame, and a digging mechanism is mounted on the front side of the supporting frame through the clamping mechanism; a guide mechanism is fixedly mounted at the lower end of the front face of the mounting frame and wraps the outer side of the excavating mechanism, and a linear displacement mechanism is fixedly mounted on the rear side of the top of the mounting frame. By the adoption of the structure, the sliding frame slides to the outer surface of the transverse rail, the limiting spring drives the limiting frame to move downwards to be inserted into the limiting sleeve, when the sliding frame is mounted and dismounted, the limiting frame is pulled to move upwards to be separated from the limiting sleeve, dismounting, maintaining and overhauling are convenient through the design, use convenience is improved, and due to the fact that the sliding frame is fast to dismount and mount, use is convenient. And different numbers of excavating mechanisms can be flexibly mounted according to use requirements, so that the use adaptability is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of construction engineering excavation, and in particular relates to a well digging drill bit used in construction engineering. Background Art

[0002] In the field of well digging and processing in construction, we can also refer to the classification method of piles in the field of pile foundation engineering. According to the impact of well formation on the stratum, wells can also be divided into three categories: non-squeezing soil wells, partially squeezing soil wells and completely squeezing soil wells. The construction method of non-squeezing soil wells, such as common bored wells, is similar to non-squeezing soil piles in pile foundation engineering (such as bored piles, punched piles, CFA piles, etc.). There are many problems in technology, environmental protection, cost, etc. In the process of well digging in construction, the construction of this type of non-squeezing soil well may lead to insufficient stability of the well wall and low construction efficiency. At the same time, it may cause a great impact on the surrounding environment, such as noise, dust and other pollution. The pile foundation engineering community has been committed to developing new types of pile foundations. In the field of well digging and processing, people are also constantly exploring a new type of well digging method with high bearing capacity, less construction environmental pollution and good economic benefits. As a completely squeezed soil type pile, the spiral squeezed soil cast-in-place pile brings a new idea to the well digging construction. In the well digging construction, if the spiral squeezed soil cast-in-place pile is used, the soil in the original well hole can be squeezed into the side wall of the well hole without being discharged from the ground when drilling and lifting the drill. In this way, not only the physical and mechanical properties of the soil around the well are improved, the bearing capacity and stability of the well are improved, but also the whole construction process is pollution-free, vibration-free and low-noise. However, at present, in the field of well digging in construction construction, most of the existing drill bits and drilling tools are single-axis, just like the single-axis drill bits and drilling tools in pile foundation engineering. Each time the drill is drilled and the drill is lifted, only one well hole can be formed. Therefore, under the condition of tight construction period, its application is greatly limited. If a multi-axis spiral squeezed soil digging device can be developed, the well digging efficiency can be greatly improved to meet the strict requirements on the construction period in construction.

[0003] The Chinese patent with the announcement number "CN216553769U" discloses a dual-axis spiral extrusion and expansion drilling tool capable of synchronous drilling, which includes two threaded drill rods, a connecting rod, a variable frequency motor and a speed sensor. The two threaded drill rods are parallel and arranged vertically. Each threaded drill rod includes a drill bit, a spiral part and a smooth rod part from bottom to top. The smooth rod parts of the two threaded drill rods are connected by at least one connecting rod. The top of each threaded drill rod is provided with a variable frequency motor, and rotates around its own axis under the drive of the corresponding variable frequency motor. The smooth rod part of each threaded drill rod is also provided with a speed sensor. The application adopts a dual-axis drilling tool setting, which can complete the drilling of multiple pile holes at the same time, improve the construction efficiency of spiral soil extrusion and cast-in-place piles, and at the same time, when the dual-axis drilling tool encounters resistance during the two-axis drilling process, the speed sensor will detect that the speeds of the two axes are different, transmit data to the variable frequency motor, and the variable frequency motor will sound an alarm. At this time, the speed of the variable frequency motor is manually adjusted to maintain the stability of the two-axis drilling tool;

[0004] During the application of the above-mentioned device, firstly, during the processing, only two-axis excavation processing can be realized, and the overall application adaptability is poor, and it is impossible to further realize more excavation processing. At the same time, it is difficult to quickly disassemble and assemble the excavation drill bits as a whole. Since the excavation drill bit needs to contact the ground violently for excavation and drilling during use, it is obvious that the overall structure of the excavation drill bit itself and the bottom shaft will suffer greater wear and tear during normal use. Therefore, during use, usually after each drilling process is completed, or when an excavation failure occurs, the excavation drill bit as a whole needs to be inspected and maintained. However, it is obvious that during use, the above-mentioned device cannot be quickly disassembled to inspect the excavation drill bit as a whole, and the entire disassembly and assembly process is relatively time-consuming and labor-intensive, and consumes a lot of manpower and material resources. Summary of the invention

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a well digging drill bit for construction engineering to solve the problems raised in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A well digging drill bit for construction engineering, comprising a mounting frame, a support frame fixedly mounted on the top of the mounting frame, a clamping mechanism fixedly mounted on the top of the supporting frame, an excavation mechanism mounted on the front side of the supporting frame through the clamping mechanism, a guide mechanism fixedly mounted on the lower front end of the mounting frame, the guide mechanism covering the outer side of the excavation mechanism, a linear displacement mechanism fixedly mounted on the rear side of the top of the mounting frame, and the front side of the linear displacement mechanism and the rear side of the clamping mechanism fixedly connected;

[0008] The clamping mechanism includes a vertical rail, which is fixedly installed on the top of the mounting frame at equal intervals. The inner upper end of the vertical rail is slidably connected to a limiting assembly. A cross rail is fixedly installed on the front side of the limiting assembly. A slide is slidably connected inside the cross rail at equal intervals. The front side of the slide is fixedly connected to the back side of the excavating mechanism. The front end of the limiting assembly is clamped with the top of the slide. A connecting arm is fixedly installed on the bottom of the cross rail at equal intervals. The rear side of the connecting arm is fixedly connected to the linear displacement mechanism.

[0009] As a preferred technical solution, the excavation mechanism includes a support rod, which is fixedly installed on the front side of the slider, a fixed plate is fixedly installed on the front end of the support rod, a first motor is fixedly installed on the top of the fixed plate, an output end of the first motor passes through the fixed plate and is fixedly installed with an excavation auger, and a drill bit assembly is fixedly installed at the bottom of the excavation auger.

[0010] As an optimal technical solution, the drill bit assembly includes a hexagonal plug, the outer side of the hexagonal plug is provided with a hexagonal socket, the hexagonal socket is installed on the outer side of the hexagonal plug by bolts, and a spiral drill bit is fixedly installed on the bottom of the hexagonal socket.

[0011] As a preferred technical solution, drill teeth are fixedly connected to the outer surface of the auger drill bit at equal intervals, and an auger is fixedly installed on the outer surface of the excavation auger.

[0012] As a preferred technical solution, the limit assembly includes a sliding frame and a limit sleeve, the sliding frame is slidably connected to the inside of the vertical rail, the sliding frame is fixedly connected to a limit spring, the top of the limit spring is fixedly installed with a slide plate, the top of the slide plate is fixedly installed with a limit frame, the limit sleeve is fixedly installed on the top of the slide frame, and the end of the limit frame is inserted into the inner side of the limit sleeve.

[0013] As a preferred technical solution, the linear displacement mechanism includes a longitudinal rail, which is fixedly installed in the middle of the top rear side of the mounting frame, and a second motor is fixedly installed on the top of the longitudinal rail. The output end of the second motor passes through the longitudinal rail and is fixedly installed with a lead screw, which is rotatably connected to the inside of the longitudinal rail, and a sliding block is threadedly connected to the outer surface of the lead screw, and a connecting frame is fixedly installed on the front side of the sliding block, and the front side of the connecting frame is fixedly connected to the rear end of the connecting arm.

[0014] As a preferred technical solution, support arms are fixedly installed at both ends of the rear side of the connecting frame, slide grooves are opened on both sides of the longitudinal rail, and the rear end of the support arm is slidably connected to the inner side of the slide grooves on both sides of the longitudinal rail.

[0015] As an optimal technical solution, the guiding mechanism includes a concave seat, which is fixedly installed on the front lower end of the supporting frame. Both sides of the upper front end of the concave seat are provided with mounting grooves, and the inner side of the mounting groove is slidably connected with a guide frame. The rear sides of both ends of the bottom of the guide frame are rotatably connected with a limiting block. Both sides of the bottom of the concave seat are provided with special-shaped grooves, and the inner side of the special-shaped groove is slidably connected with a positioning frame, and the inner side of the positioning frame is fit-fittingly connected to both sides of the limiting block.

[0016] As a preferred technical solution, a mud brush is installed inside the guide frame by bolts, and the excavation auger is slidably connected between the concave seat and the inner side of the guide frame.

[0017] In summary, the present invention mainly has the following beneficial effects:

[0018] First, by sliding the slide to the outer surface of the cross rail, the limit spring drives the limit frame to move down and insert into the limit sleeve to realize the installation of the slide. When disassembling, the limit frame is pulled up to separate from the limit sleeve. This design is convenient for disassembly, maintenance and repair, and improves the convenience of use. Moreover, due to its fast disassembly and assembly, different numbers of excavation mechanisms can be flexibly installed according to the use requirements, which enhances the adaptability of use. In addition, its multi-axis design can further improve the excavation quantity and excavation efficiency compared with the two-axis drive as a whole.

[0019] Second, by arranging the linear displacement mechanism and the excavation mechanism to cooperate with each other, during use, the second motor is started to drive the screw rod to rotate in the longitudinal rail, drive the slider to slide up and down, drive the connecting frame and the auger drill bit to move down, and then the first motor is started to drive the excavation auger to rotate, cooperate with the drill barrel, drill teeth and auger, to achieve excellent drilling and excavation, the auger can assist in excavation and turn the soil, to ensure stable and efficient drilling processing;

[0020] Third, by setting the guide mechanism, when in use, the guide frame and the concave seat cooperate with each other to assist in limiting, so that the excavation auger can move smoothly. When drilling, the mud brush can clean the mud outside the auger, and gravity makes the positioning frame in the special-shaped groove fall naturally to limit, which is convenient for installing the guide frame and the concave seat. When disassembling, push the positioning frame to retract it, and pull the guide frame, which is easy to inspect, maintain, disassemble and replace, and improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the present invention when viewed from above;

[0024] Figure 4 It is a schematic diagram of the structure of the linear displacement mechanism of the present invention;

[0025] Figure 5 It is a front structural schematic diagram of the guide mechanism of the present invention in a disassembled state;

[0026] Figure 6 It is a rear view structural schematic diagram of the guide mechanism of the present invention in a disassembled state;

[0027] Figure 7 It is a schematic diagram of the structure of the clamping mechanism and the digging mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the excavation mechanism of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0030] Fig.10 It is a schematic structural diagram of the disassembled state of the limit assembly of the present invention.

[0031] Figure numerals: 1, mounting frame; 2, support frame; 3, clamping mechanism; 31, vertical rail; 32, limit assembly; 321, slide frame; 322, limit sleeve; 323, limit spring; 324, slide plate; 325, limit frame; 33, cross rail; 34, slide frame; 35, connecting arm; 4, excavation mechanism; 41, support rod; 42, fixing plate; 43, first motor; 44, excavation auger; 45, drill assembly; 451, six Angle plug; 452, hexagonal socket; 453, spiral drill bit; 454, drill teeth; 455, auger; 5, guide mechanism; 51, concave seat; 52, mounting groove; 53, guide frame; 54, limit block; 55, positioning frame; 56, mud brush; 57, special-shaped groove; 6, linear displacement mechanism; 61, longitudinal rail; 62, second motor; 63, screw rod; 64, sliding block; 65, connecting frame; 66, support arm; 67, slide groove. DETAILED DESCRIPTION

[0032] Example

[0033] refer to Figures 1 to 10 A well digging drill bit for construction engineering of this embodiment includes a mounting frame 1, a support frame 2 is fixedly mounted on the top of the mounting frame 1, a clamping mechanism 3 is fixedly mounted on the top of the support frame 2, an excavation mechanism 4 is mounted on the front side of the support frame 2 through the clamping mechanism 3, a guide mechanism 5 is fixedly mounted on the lower front end of the mounting frame 1, the guide mechanism 5 is covered on the outside of the excavation mechanism 4, a linear displacement mechanism 6 is fixedly mounted on the rear side of the top of the mounting frame 1, and the front side of the linear displacement mechanism 6 is fixedly connected to the rear side of the clamping mechanism 3;

[0034] The clamping mechanism 3 includes a vertical rail 31, which is fixedly installed at the top of the mounting frame 1 at equal intervals. The upper end of the vertical rail 31 is slidably connected to the limit assembly 32. The front side of the limit assembly 32 is fixedly installed with a cross rail 33. The inside of the cross rail 33 is slidably connected with a slide 34 at equal intervals. The front side of the slide 34 is fixedly connected to the back of the excavating mechanism 4. The front end of the limit assembly 32 is clamped with the top of the slide 34. The bottom of the cross rail 33 is fixedly installed with a connecting arm 35 at equal intervals. The rear side of the connecting arm 35 is fixedly connected to the linear displacement mechanism 6. The vertical rail 31 and the limit assembly 32 in the clamping mechanism 3 ensure the stable installation of the slide 34. The flexibility and detachability enable the excavation mechanism 4 to be flexibly installed and replaced according to actual needs, thereby improving the applicability and maintenance convenience of the equipment. The guide mechanism 5 effectively limits the movement trajectory of the excavation mechanism 4, allowing it to move up and down more smoothly during work, reducing unnecessary shaking and deviation, and improving the accuracy and quality of construction. The synergistic effect of the linear displacement mechanism 6 and the clamping mechanism 3 realizes the precise displacement control of the excavation mechanism 4, ensuring the depth and position accuracy of drilling and excavation. The coordinated work of the overall structure improves the working efficiency and stability of the excavation drill bit, and reduces maintenance costs and operating difficulty.

[0035] refer to Figure 7-Figure 8 The excavation mechanism 4 includes a support rod 41, which is fixedly installed on the front side of the slider, a fixed plate 42 is fixedly installed on the front end of the support rod 41, a first motor 43 is fixedly installed on the top of the fixed plate 42, an output end of the first motor 43 passes through the fixed plate 42 and is fixedly installed with an excavation auger 44, a drill bit assembly 45 is fixedly installed at the bottom of the excavation auger 44, the drill bit assembly 45 includes a hexagonal plug 451, a hexagonal socket 452 is sleeved on the outer side of the hexagonal plug 451, the hexagonal socket 452 is installed on the outer side of the hexagonal plug 451 by bolts, an auger drill bit 453 is fixedly installed on the bottom of the hexagonal socket 452, and the outer surface of the auger drill bit 453 is uniformly spaced. The excavation auger 44 is fixedly connected with a drill tooth 454, and an auger 455 is fixedly installed on the outer surface of the excavation auger 44. The support rod 41 provides a stable support for the fixed plate 42 and subsequent components. The first motor 43 drives the excavation auger 44 to rotate for well digging and excavation processing. In the drill bit assembly 45, the cooperation and bolt fixation of the hexagonal plug 451 and the hexagonal sleeve 452 ensure the firmness and removability of the installation of the auger bit 453, which is convenient for replacing the worn auger bit 453. The setting of the drill tooth 454 enhances the excavation ability of the auger bit 453, and the auger 455 can assist in improving the excavation effect, making the excavation more uniform and in-depth, and improving the working quality and efficiency of the excavation bit.

[0036] refer to Figure 7-10The limit assembly 32 includes a slide frame 321 and a limit sleeve 322. The slide frame 321 is slidably connected to the inside of the vertical rail 31. The slide frame 321 is fixedly connected to the limit spring 323. The top of the limit spring 323 is fixedly installed with a slide plate 324. The top of the slide plate 324 is fixedly installed with a limit frame 325. The limit sleeve 322 is fixedly installed on the top of the slide frame 34. The end of the limit frame 325 is inserted into the inner side of the limit sleeve 322. The linear displacement mechanism 6 includes a longitudinal rail 61 The longitudinal rail 61 is fixedly installed in the middle of the top rear side of the mounting frame 1, and a second motor 62 is fixedly installed on the top of the longitudinal rail 61. The output end of the second motor 62 passes through the longitudinal rail 61 and is fixedly installed with a screw rod 63. The screw rod 63 is rotatably connected to the inside of the longitudinal rail 61. The outer surface of the screw rod 63 is threadedly connected with a sliding block 64. The front side of the sliding block 64 is fixedly installed with a connecting frame 65. The front side of the connecting frame 65 is fixedly connected to the rear end of the connecting arm 35. Both ends of the rear side of the connecting frame 65 are fixed. The support arm 66 is fixedly installed, and slide grooves 67 are opened on both sides of the longitudinal rail 61. The rear end of the support arm 66 is slidably connected to the inner side of the slide grooves 67 on both sides of the longitudinal rail 61. The slide frame 321 slides in the vertical rail 31 to ensure the smoothness of the movement. The cooperation of the limit spring 323 and the slide plate 324 enables the limit frame 325 to be stably inserted into the limit sleeve 322, thereby achieving reliable limit and fixation, ensuring the stable position of the slide frame 34, and also facilitating the disassembly operation. The linear displacement mechanism 6 plays an important role. The longitudinal rail 61 provides a stable operating track for the screw rod 63 and the sliding block 64. The second motor 62 drives the screw rod 63 to rotate accurately, thereby driving the sliding block 64 to move up and down, and drives the entire excavation mechanism 4 to move through the connecting frame 65 and the connecting arm 35. The control is accurate and efficient. The sliding connection between the support arm 66 and the slide grooves 67 on both sides of the longitudinal rail 61 enhances the stability and accuracy of the movement of the sliding block 64, so that the excavation drill bit can accurately reach the specified position for operation.

[0037] refer to Figure 1-Figure 6The guide mechanism 5 includes a concave seat 51, which is fixedly installed at the lower end of the front side of the support frame 2. Both sides of the upper end of the front side of the concave seat 51 are provided with mounting grooves 52. The inner side of the mounting grooves 52 is slidably connected with a guide frame 53. The rear sides of both ends of the bottom of the guide frame 53 are rotatably connected with the limit block 54. Both sides of the bottom of the concave seat 51 are provided with special-shaped grooves 57. The inner side of the special-shaped grooves 57 is slidably connected with a positioning frame 55. The inner side of the positioning frame 55 and the two sides of the limit block 54 are fitted and connected. A mud brush 56 is installed inside the guide frame 53 by bolts. The excavation auger 44 is slidably connected between the concave seat 51 and the inner side of the guide frame 53. The design of the guide mechanism 5 brings many advantages. The concave seat 51 and the guide frame 53 are installed The sliding connection of the mounting groove 52 realizes the convenient installation and disassembly of the guide frame 53, which is convenient for maintenance and replacement. The fitting connection between the positioning frame 55 in the special-shaped groove 57 and the limit block 54 effectively limits the position of the guide frame 53, ensuring that it will not deviate during work, thereby improving the stability and accuracy of the movement of the excavation auger 44. The mud brush 56 is installed in the guide frame 53 by bolts, which is convenient for disassembly, cleaning and replacement, and can timely and effectively clean the mud on the outer surface of the excavation auger 44 to ensure the normal operation of the excavation auger 44. The sliding connection of the excavation auger 44 between the concave seat 51 and the inner side of the guide frame 53 makes its movement more stable, reduces the working error caused by shaking, and improves the work quality and efficiency.

[0038] Principle and advantages of use: By setting the clamping mechanism 3, during the use of the device, the slide 34 can be slid to the outer surface of the cross rail 33. At this time, the limit spring 323 drives the limit frame 325 to move downward by virtue of its reset resistance. After the limit frame 325 moves downward, it can be smoothly inserted into the inner side of the limit sleeve 322. With the help of the mutual limitation between the limit frame 325 and the limit sleeve 322, the slide 34 can be effectively assisted to be installed on the inner side of the cross rail 33. During use, if disassembly operation is required, only the limit frame at the top needs to be pulled out. 325 moves up. Once the limit frame 325 moves up, it will drive it to break away from the inside of the limit sleeve 322, so that the limit frame 325 and the limit sleeve 322 are separated from each other, so that the slide 34 can be quickly removed from the outer surface of the cross rail 33. The device is easy to disassemble, maintain and repair during the overall use process, which greatly improves the overall convenience of use of the device. In addition, its unique design of quick disassembly and assembly can flexibly install different groups of excavating mechanisms 4 according to specific use needs during use, which significantly improves the overall use adaptability of the device.

[0039] By setting the linear displacement mechanism 6 to cooperate with the excavation mechanism 4, during the use of the device, the second motor 62 can be started to operate, and the operation of the second motor 62 will drive the screw rod 63 to rotate, and the screw rod 63 can rotate inside the longitudinal rail 61, and then the slider can be driven to slide up and down inside the longitudinal rail 61 through the screw rod 63. At this time, the sliding block 64 moves up and down, and can assist in driving the connecting frame 65 to move downward, and the downward movement of the connecting frame 65 will drive the auger drill bit 453 to move downward. At this time, the first motor 43 is started to operate, and the first motor 43 can drive the excavation auger 44 to rotate. The rotation of the excavation auger 44 can drive the auger drill bit 453 to drill, and the drill barrel cooperates with the drill teeth 454 and the auger 455 to rotate, and then the sliding block 64 is driven to move downward through the screw rod 63, so as to play an excellent drilling and excavation role. The rotation of the auger 455 can not only assist in drilling and excavation, but also can turn the soil upward at the same time, so that the device can achieve stable and efficient drilling processing;

[0040] By providing the guide mechanism 5, during the use of the device, the guide frame 53 and the concave seat 51 can cooperate with each other, so that the device can make use of the auxiliary limiting effect of the guide frame 53 and the concave seat 51 to enable each excavation auger 44 to move up and down more smoothly on the inner side of the guide frame 53 and the concave seat 51, and during the drilling and excavation process, the mud brush 56 can be provided to clean the mud on the outer surface of the auger 455, thereby achieving a good cleaning effect. At the same time, during use, due to the influence of gravity, the positioning frame 55 inside the special-shaped groove 57 naturally falls under the action of gravity, and the positioning frame 55 is covered on the outer side of the limit block 54. The limit block 54 is limited by the positioning frame 55, so that the two ends of the guide frame 53 can be stably located on the inner side of the installation groove 52. At this time, the guide frame 53 and the concave seat 51 can be quickly assembled and installed. If disassembly is required, it is only necessary to push the positioning frame 55 upward to retract the positioning frame 55 into the inside of the special-shaped groove 57. Once the two sides of the limit block 54 and the positioning frame 55 lose contact and limit, the two sides of the rear end of the guide frame 53 can be pulled out from the inside of the installation groove 52, so that the device as a whole is easy to inspect, maintain, disassemble and replace, and effectively improves the overall convenience of use of the device.

Claims

1. A well digging drill bit for construction engineering, comprising a mounting frame, characterized in that: A support frame is fixedly installed on the top of the mounting frame, a clamping mechanism is fixedly installed on the top of the supporting frame, an excavation mechanism is installed on the front side of the supporting frame through the clamping mechanism, a guide mechanism is fixedly installed on the lower end of the front side of the mounting frame, the guide mechanism is covered on the outside of the excavation mechanism, a linear displacement mechanism is fixedly installed on the rear side of the top of the mounting frame, and the front side of the linear displacement mechanism is fixedly connected to the rear side of the clamping mechanism; The clamping mechanism includes a vertical rail, which is fixedly installed on the top of the mounting frame at equal intervals. The inner upper end of the vertical rail is slidably connected to a limiting assembly. A cross rail is fixedly installed on the front side of the limiting assembly. A slide is slidably connected inside the cross rail at equal intervals. The front side of the slide is fixedly connected to the back side of the excavating mechanism. The front end of the limiting assembly is clamped with the top of the slide. A connecting arm is fixedly installed on the bottom of the cross rail at equal intervals. The rear side of the connecting arm is fixedly connected to the linear displacement mechanism.

2. A well digging drill bit for construction engineering according to claim 1, characterized in that: The excavation mechanism includes a support rod, which is fixedly installed on the front side of the slider, a fixed plate is fixedly installed on the front end of the support rod, a first motor is fixedly installed on the top of the fixed plate, an excavation auger is fixedly installed on the output end of the first motor through the fixed plate, and a drill bit assembly is fixedly installed on the bottom of the excavation auger.

3. A well digging drill bit for construction engineering according to claim 2, characterized in that: The drill bit assembly comprises a hexagonal plug, the outer side of the hexagonal plug is sleeved with a hexagonal socket, the hexagonal socket is installed on the outer side of the hexagonal plug through bolts, and a spiral drill bit is fixedly installed on the bottom of the hexagonal socket.

4. A well digging drill bit for construction engineering according to claim 3, characterized in that: The outer surface of the auger drill bit is fixedly connected with drill teeth at equal intervals, and the outer surface of the excavation auger is fixedly installed with an auger.

5. A well digging drill bit for construction engineering according to claim 1, characterized in that: The limit assembly includes a sliding frame and a limit sleeve. The sliding frame is slidably connected to the inside of the vertical rail. The sliding frame is fixedly connected to a limit spring. A slide plate is fixedly installed on the top of the limit spring. A limit frame is fixedly installed on the top of the slide plate. The limit sleeve is fixedly installed on the top of the sliding frame. The end of the limit frame is inserted into the inner side of the limit sleeve.

6. A well digging drill bit for construction engineering according to claim 1, characterized in that: The linear displacement mechanism includes a longitudinal rail, which is fixedly installed in the middle of the top rear side of the mounting frame, a second motor is fixedly installed on the top of the longitudinal rail, an output end of the second motor passes through the longitudinal rail and a lead screw is fixedly installed, the lead screw is rotatably connected to the inside of the longitudinal rail, a sliding block is threadedly connected to the outer surface of the lead screw, a connecting frame is fixedly installed on the front side of the sliding block, and the front side of the connecting frame is fixedly connected to the rear end of the connecting arm.

7. A well digging drill bit for construction engineering according to claim 6, characterized in that: Support arms are fixedly mounted on both ends of the rear side of the connecting frame, sliding grooves are provided on both sides of the longitudinal rail, and the rear end of the support arm is slidably connected to the inner sides of the sliding grooves on both sides of the longitudinal rail.

8. A well digging drill bit for construction engineering according to claim 2, characterized in that: The guiding mechanism comprises a concave seat, which is fixedly mounted on the front lower end of the supporting frame, mounting grooves are provided on both sides of the front upper end of the concave seat, a guide frame is slidably connected to the inner side of the mounting groove, the rear sides of both ends of the bottom of the guide frame are rotatably connected to the limiting blocks, special-shaped grooves are provided on both sides of the bottom of the concave seat, a positioning frame is slidably connected to the inner side of the special-shaped groove, and the inner side of the positioning frame is fitted and connected to both sides of the limiting blocks.

9. A well digging drill bit for construction engineering according to claim 8, characterized in that: A mud brush is installed inside the guide frame by bolts, and the excavation auger is slidably connected between the concave seat and the inner side of the guide frame.

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