An auger

Abstract

This utility model discloses a spiral drill, relating to the field of spiral drilling construction, comprising: a drill rod, with spiral blades arranged on the outer periphery of the drill rod, the spiral blades being arranged around the axis of the drill rod and extending spirally along the drilling direction of the drill rod, the spiral blades including multiple spiral curved surfaces connected end to end; and a fixing plate, the fixing plate being disposed at the interval between two adjacent spiral curved surfaces at the upper end of the drill rod, the side of the fixing plate being in close contact with the spiral curved surface, and the length of the fixing plate in the drilling direction perpendicular to the drill rod being greater than the vertical distance between the outer edge of the spiral curved surface and the drill rod. During the drilling process, the fixing plate can contact the ground around the borehole opening, thereby achieving precise control of the drilling depth. Simultaneously, the fixing plate can effectively collect the excavated soil thrown out by the rotating spiral blades and dispersed around the bottom of the hole, avoiding the problem of additional manual cleaning due to soil accumulation in traditional spiral drills, thus improving the construction efficiency of spiral drills.

Description

Technical Field

[0001] This utility model relates to the field of spiral drilling construction, and specifically to a spiral drill. Background Technology

[0002] In current drilling projects involving small-diameter piles and large quantities, such as photovoltaic fence foundations, traditional auger drills have significant technical shortcomings. Firstly, construction workers need to closely monitor the exposed length of the drill rod throughout the entire process to determine if the drilling depth has met requirements, consuming a considerable amount of valuable time. This manual depth control method is not only inefficient but also lacks precision. Secondly, the accumulation of excavated material on the borehole wall is another major technical challenge for traditional auger drills. During drilling, a thick layer of excavated material easily remains between the auger blades and the borehole wall. Conventional auger drill designs struggle to effectively remove this accumulated material, requiring additional manpower for cleaning. Several minutes are spent cleaning the borehole wall after each borehole is completed, especially in complex geological conditions such as clay, where the difficulty and cost of cleaning increase significantly. The cost of cleaning accounts for a disproportionately high percentage of the total cost of a single borehole, further squeezing the profit margin of drilling projects. Therefore, a new type of auger drill that integrates self-controlled drilling depth and simultaneous excavated material cleaning is urgently needed. Utility Model Content

[0003] This application provides a spiral drill that can solve the technical problems of high cost and difficulty in cleaning up slag piles in the prior art when manually controlling the drilling depth.

[0004] This application provides an embodiment of a spiral drill, which includes: a drill rod, on the outer periphery of which spiral blades are disposed, the spiral blades being arranged around the axis of the drill rod and extending spirally along the drilling direction of the drill rod, the spiral blades including a plurality of spiral curved surfaces connected end to end; and a fixing plate, which is disposed at the interval between two adjacent spiral curved surfaces located at the upper end of the drill rod, the side of the fixing plate being in close contact with the spiral curved surfaces, and the length of the fixing plate in the drilling direction perpendicular to the drill rod being greater than the vertical distance between the outer edge of the spiral curved surface and the drill rod.

[0005] In conjunction with the above embodiments, in one implementation, the fixing plate includes two opposing long sides and two opposing short sides, each of the long sides being adjacent to each of the short sides, the two long sides being welded to the helical surface respectively, one of the short sides being welded to the outer peripheral surface of the drill rod, and the other short side being exposed on the helical surface.

[0006] In conjunction with the above embodiments, in one implementation, a long side of the fixing plate facing the drilling direction includes a first segment and a second segment, wherein the first segment is fitted and connected to the helical surface, and the second segment is exposed on the helical surface.

[0007] In one embodiment, in conjunction with the above embodiments, the second segment has a comb-like structure.

[0008] In one embodiment, in conjunction with the above embodiments, the second segment is provided with a cleaning brush.

[0009] In one embodiment, in conjunction with the above embodiments, the second segment is provided with an infrared rangefinder for measuring borehole depth.

[0010] In conjunction with the above embodiments, in one implementation, the outer edge of the helical blade is configured as a continuous cutting edge structure.

[0011] In conjunction with the above embodiments, in one implementation, the auger further includes: a built-in hydraulic motor located at the top end of the drill rod; and a hydraulic oil pipe connector disposed at the end of the built-in hydraulic motor away from the drill rod.

[0012] In conjunction with the above embodiments, in one implementation, the auger drill further includes: a positioning pin, wherein the built-in hydraulic motor is fixed to the top end of the drill rod by the positioning pin, and both the built-in hydraulic motor and the top end of the drill rod have coaxial positioning holes, and the positioning pin is pressed into the positioning hole so that the inner wall surface of the built-in hydraulic motor abuts against the top end of the drill rod.

[0013] In one embodiment, in conjunction with the above embodiments, the fixing plate is a galvanized steel plate.

[0014] The beneficial effects of the technical solutions provided in this application include:

[0015] On the one hand, in this embodiment, the fixing plate is disposed at the upper end of the drill rod and at the interval between two adjacent helical surfaces. Its length in the drilling direction perpendicular to the drill rod is greater than the vertical distance between the outer edge of the helical surface and the drill rod. Therefore, during the drilling process, when the fixing plate contacts the ground around the hole opening, the drilling depth reaches the predetermined value, thereby achieving precise control of the drilling depth and avoiding the depth control error caused by the reliance on manual monitoring of the exposed length of the drill rod in traditional auger drills. On the other hand, the helical blades are arranged around the axis of the drill rod and extend helically along the drilling direction, including multiple helical surfaces connected end to end. Therefore, during the drilling process, when the helical blades rotate, their edges will have a certain cutting effect on the hole wall, loosening the slag on the hole wall. The fixing plate can effectively collect the slag thrown out by the rotating helical blades and dispersed around the bottom of the hole. This enables the simultaneous drilling and slag removal of the auger drill, avoiding the problem of additional manual cleaning due to slag accumulation in traditional auger drills, improving the working continuity and overall construction efficiency of the auger drill, especially in large-scale drilling operations, where the time efficiency is more significant. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a spiral drill provided in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure of the fixing plate provided in an embodiment of this application.

[0019] In the diagram: 1. Drill rod; 2. Spiral blade; 3. Fixing plate; 31. First section; 32. Second section; 4. Built-in hydraulic motor; 5. Hydraulic oil pipe connector; 6. Positioning pin. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0021] This application provides a spiral drill that can solve the technical problems of high cost and difficulty in cleaning up slag piles in the prior art when manually controlling the drilling depth.

[0022] Figure 1 This is a schematic diagram of a auger drill provided in an embodiment of this application. (Reference) Figure 1 The auger drill provided in this application includes: a drill rod 1, with a helical blade 2 disposed on the outer periphery of the drill rod 1. The helical blade 2 is disposed around the axis of the drill rod 1 and extends helically along the drilling direction of the drill rod 1. The helical blade 2 includes a plurality of helical curved surfaces connected end to end; a fixing plate 3, which is disposed at the interval between two adjacent helical curved surfaces located at the upper end of the drill rod 1. The side of the fixing plate 3 is in close contact with the helical curved surface, and the length of the fixing plate 3 in the drilling direction perpendicular to the drill rod 1 is greater than the vertical distance between the outer edge of the helical curved surface and the drill rod 1.

[0023] Specifically, in this embodiment, the vertical distance from the fixing plate 3 to the drill bit of the drill rod 1 can be pre-set as the drilling depth according to actual construction needs. Thus, during drilling, when the fixing plate 3 contacts the ground around the borehole opening, the drilling depth reaches the predetermined value, achieving precise control of the drilling depth and avoiding the depth control error caused by relying on manual monitoring of the exposed length of the drill rod 1 in traditional auger drills. Furthermore, the fixing plate 3 can be configured as a detachable fixing plate 3, with its side engaging with the helical curved surface. Each helical curved surface of the helical blade 2 is provided with a locking interface for engaging the fixing plate 3. Therefore, the fixing plate 3 can be engaged in different positions according to different construction needs to achieve precise control of different drilling depths. Simultaneously, the auger drill provided in this embodiment can adjust the size and position of the fixing plate 3, as well as the parameters of the helical blade 2, according to different pile diameters and drilling depth requirements to adapt to various drilling construction scenarios with small pile diameters and large project volumes, exhibiting strong versatility and adaptability.

[0024] In this embodiment, the fixing plate 3 is a galvanized steel plate. In some other embodiments of this application, other materials for the fixing plate 3 can also be selected according to actual construction needs, such as stainless steel plate, alloy steel plate, engineering plastics, etc., to meet the requirements of different geological conditions and corrosive environments.

[0025] Furthermore, the fixing plate 3 of this application can also be located at the upper end of the drill rod 1 and at the interval between two adjacent helical surfaces, and the fixing plate 3 is disposed on opposite sides of the drill rod 1, and the length of the fixing plate 3 in the drilling direction perpendicular to the drill rod 1 is greater than the vertical distance between the outer edge of the helical surface and the drill rod 1. During the drilling process, the reaction force of the fixing plates 3 on both sides is evenly distributed by the hole wall, making the force more balanced.

[0026] Figure 2 This is a schematic diagram of the structure of the fixing plate 3 provided in an embodiment of this application. See also... Figure 2 In this embodiment of the application, the fixing plate 3 includes two opposite long sides and two opposite short sides, each long side is adjacent to each short side, the two long sides are respectively welded to the helical curved surface, one short side is welded to the outer peripheral surface of the drill rod 1, and the other short side is exposed on the helical curved surface.

[0027] Specifically, the fixing plate 3 has a rectangular plate structure, and the height of the fixing plate 3 should be the same as the interval between two adjacent helical surfaces.

[0028] In this embodiment, the long side of the fixing plate 3 facing the drilling direction includes a first segment 31 and a second segment 32, wherein the first segment 31 is fitted and connected to the helical curved surface, and the second segment 32 is exposed on the helical curved surface.

[0029] Specifically, the length of the first segment 31 accounts for 10% to 20% of the total length of the fixing plate 3, and the length of the second segment 32 accounts for 80% to 90% of the total length of the fixing plate 3. During the drilling process, the spiral blade 2 rotates to cut the soil, forming a spiral channel and initially discharging the soil. The second segment 32 uses rotational inertia to scrape up the residual soil from the borehole wall. When the drilling depth reaches the pre-designed value, the second segment 32 contacts the hard rock layer at the bottom of the hole or the borehole wall, forming a mechanically rigid stop point, thereby simultaneously realizing drilling depth monitoring and soil removal.

[0030] In this embodiment, the second segment 32 has a comb-like structure.

[0031] Specifically, the second section 32 consists of 5 to 8 equally spaced comb teeth, so that the tips of the comb teeth can efficiently scrape away residual fine soil in a line contact manner.

[0032] In this embodiment of the application, the second segment 32 is provided with a cleaning brush.

[0033] Specifically, the cleaning brush can be made of nylon or steel wire. By cleaning the borehole wall with the brush, it thoroughly removes adhering fine particles and mud film, making the drilling quality more stable and reliable, and the borehole wall smoother. This provides a good foundation for subsequent pile foundation construction and helps improve the overall construction quality of the project. Furthermore, the cleaning brush is detachable and replaceable.

[0034] In this embodiment of the application, the second segment 32 is provided with an infrared rangefinder for measuring the borehole depth.

[0035] Specifically, infrared rangefinders can measure the distance to the bottom of the hole in real time, further improving the control over drilling accuracy.

[0036] In this embodiment of the application, the outer edge of the helical blade 2 is configured as a continuous cutting edge structure.

[0037] Specifically, the outer edge of the spiral blade 2 is designed as a continuous cutting edge, and the spiral blade 2 is thickened and welded to the fixing plate 3 so that there is no gap between the fixing plate 3 and the spiral surface, thereby improving the cutting efficiency and structural strength of the overall spiral drill.

[0038] In this embodiment, the auger drill further includes: a built-in hydraulic motor 4, which is located at the top of the drill rod 1; and a hydraulic oil pipe connector 5, which is disposed at the end of the built-in hydraulic motor 4 away from the drill rod 1.

[0039] Specifically, the built-in hydraulic motor 4 includes a core power switching component and an auxiliary support and drilling component. The built-in hydraulic motor 4 provides power, with the core power switching component providing rotational torque, and the auxiliary support and drilling component ensuring concentricity and resistance to eccentric loads. The hydraulic pipe connector 5 includes a built-in sealing ring, an external hydraulic component, and an outer rubber layer. The built-in sealing ring is used to prevent internal leakage, the external hydraulic component enables quick assembly and disassembly of the pipeline, and the outer rubber layer provides overall protection.

[0040] In this embodiment, the auger drill further includes a positioning pin 6. The built-in hydraulic motor 4 is fixed to the top of the drill rod 1 by the positioning pin 6. Both the built-in hydraulic motor 4 and the top of the drill rod 1 have coaxial positioning holes. The positioning pin 6 is pressed into the positioning hole so that the inner wall surface of the built-in hydraulic motor 4 abuts against the top of the drill rod 1. This eliminates the risk of coaxial deviation and bolt loosening of the entire auger drill, ensuring the stability and reliability of long-term operation.

[0041] On the one hand, in this embodiment of the application, the fixing plate 3 is disposed at the upper end of the drill rod 1 and at the interval between two adjacent helical surfaces. Its length in the drilling direction perpendicular to the drill rod 1 is greater than the vertical distance between the outer edge of the helical surface and the drill rod 1. Thus, during the drilling process, when the fixing plate 3 contacts the ground around the hole, the drilling depth reaches the predetermined value, thereby achieving precise control of the drilling depth and avoiding the depth control error caused by the traditional spiral drill relying on manual monitoring of the exposed length of the drill rod 1. On the other hand, the spiral blade 2 is arranged around the axis of the drill rod 1 and extends spirally along the drilling direction, including multiple spiral curved surfaces connected end to end. Thus, during the drilling process, when the spiral blade 2 rotates, its edge will have a certain cutting effect on the hole wall, which will loosen the slag on the hole wall. The fixing plate 3 can effectively collect the slag that is thrown out by the spiral blade 2 and dispersed around the bottom of the hole. This enables the drilling and slag removal of the spiral drill to be carried out simultaneously, avoiding the problem of additional manual cleaning due to slag accumulation in traditional spiral drills. This improves the working continuity and overall construction efficiency of the spiral drill, especially in large-scale drilling operations, where the time efficiency is more significant.

[0042] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0043] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A spiral drill, characterized in that, The auger includes: A drill rod (1) is provided with a helical blade (2) on its outer periphery. The helical blade (2) is arranged around the axis of the drill rod (1) and extends helically along the drilling direction of the drill rod (1). The helical blade (2) includes multiple helical surfaces connected end to end. A fixing plate (3) is provided at the interval between two adjacent spiral surfaces located at the upper end of the drill rod (1). The side of the fixing plate (3) is in close contact with the spiral surface, and the length of the fixing plate (3) in the drilling direction perpendicular to the drill rod (1) is greater than the vertical distance between the outer edge of the spiral surface and the drill rod (1).

2. The auger drill according to claim 1, characterized in that, The fixing plate (3) includes two opposite long sides and two opposite short sides, each of the long sides is adjacent to each of the short sides, the two long sides are respectively welded to the spiral surface, one of the short sides is welded to the outer peripheral surface of the drill rod (1), and the other short side is exposed on the spiral surface.

3. A spiral drill according to claim 2, characterized in that, The fixed plate (3) has a long side facing the drilling direction, which includes a first segment (31) and a second segment (32), wherein the first segment (31) is attached to the spiral surface and the second segment (32) is exposed on the spiral surface.

4. A spiral drill according to claim 3, characterized in that, The second segment (32) has a comb-like structure.

5. A spiral drill according to claim 3, characterized in that, The second section (32) is equipped with a cleaning brush.

6. A spiral drill according to claim 3, characterized in that, The second section (32) is equipped with an infrared rangefinder for measuring borehole depth.

7. A spiral drill according to claim 1, characterized in that, The outer edge of the spiral blade (2) is configured as a continuous cutting edge structure.

8. A spiral drill according to claim 1, characterized in that, The auger also includes: Built-in hydraulic motor (4), the built-in hydraulic motor (4) is located at the top of the drill rod (1); Hydraulic oil pipe connector (5) is located at the end of the built-in hydraulic motor (4) away from the drill rod (1).

9. A spiral drill according to claim 8, characterized in that, The auger also includes: The positioning pin (6) is used to fix the built-in hydraulic motor (4) to the top of the drill rod (1). The top of the built-in hydraulic motor (4) and the drill rod (1) are both provided with coaxial positioning holes. The positioning pin (6) is pressed into the positioning hole so that the inner wall surface of the built-in hydraulic motor (4) abuts against the top of the drill rod (1).

10. A spiral drill according to claim 1, characterized in that, The fixing plate (3) is a galvanized steel plate.

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