Drill rod fixing device

Abstract

The utility model relates to the technical field of civil engineering and geological engineering, in particular to a drill rod fixing device which comprises a cylindrical pipe, a supporting seat and four perpendicularity adjusting devices, the cylindrical pipe is used for guiding a drill rod, the inner diameter of the cylindrical pipe is in clearance fit with the drill rod, and the supporting seat comprises four supporting frames and four connecting beams. Every two adjacent supporting frames are fixedly connected through a connecting beam, the four perpendicularity adjusting devices are arranged in the circumferential direction of the outer wall of the cylindrical pipe and are not at the same height, the perpendicularity adjusting devices are connected with the upper ends of the supporting frames in a one-to-one correspondence mode, each perpendicularity adjusting device comprises a rotating base, a telescopic rod and a fixed base, the rotating bases are fixed to the cylindrical pipe, and the telescopic rods are fixed to the rotating bases. The fixed base is fixed to the upper end of the supporting frame, the telescopic end of the telescopic rod is rotationally connected to the rotary base, and the fixed end is connected with the fixed base. No matter whether the surface of the rock is flat or not, the drilling rod can be made to be perpendicular to the rock for drilling through the perpendicularity adjusting device, and it is guaranteed that drilled holes meet the drilling requirement.

Description

Technical Field

[0001] The utility model relates to the technical fields of civil engineering and geological engineering, and particularly relates to a drill pipe fixing device. Background Technique

[0002] Gneiss is a metamorphic rock recrystallized from granite under high-pressure geological action, belonging to orthogneiss. Its mineral composition is similar to that of granite, showing a schistose structure and anisotropy. It is easy to mine and process along the joint direction; the compressive strength perpendicular to the joint direction is relatively high, reaching 120 - 250 MPa. Gneiss has large non-uniformity and irregularity, and poor stability. As an engineering foundation, it needs to be reinforced. Commonly used reinforcement methods include bored cast-in-place pile method, prestressed anchor rod method, soil nail wall method, etc. Among them, the most widely used is the bored cast-in-place pile method by rotary drilling.

[0003] The bored cast-in-place pile method by rotary drilling drills holes in rocks through drill pipes. Since the drilled holes need to be perpendicular to the rocks, before drilling, the drill pipes need to be limited by a fixing device of the drill pipes so that the drill pipes can drill holes perpendicular to the rocks. The current fixing device includes a fixing plate and a guiding cylinder. The fixing plate is fixed on the rock by screws, the guiding cylinder is perpendicular to the fixing plate, and the drill pipe extends into the guiding cylinder to drill holes in the rocks. However, this method cannot adjust the direction of the guiding cylinder to ensure that the drill pipe drills holes perpendicular to the rocks. When the rock surface is uneven, it is easy to cause the drilled holes not to meet the drilling requirements. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a drill pipe fixing device, which can adjust the cylindrical pipe to make the drill pipe vertically drill towards the rock.

[0005] The technical solution of the utility model includes: a cylindrical pipe, a support base, and four plumb adjustment devices. The cylindrical pipe is used to guide the drill pipe, and the inner diameter of the cylindrical pipe is in clearance fit with the drill pipe. The support base includes four support frames and four connecting beams. Adjacent two support frames are fixedly connected by connecting beams. The four plumb adjustment devices are arranged circumferentially along the outer wall of the cylindrical pipe and are not at the same height. The plumb adjustment devices are respectively connected to the upper ends of the support frames. Each plumb adjustment device includes a rotating base, a telescopic rod, and a fixed base. The rotating base is fixed on the cylindrical pipe, the fixed base is fixed on the upper end of the support frame, and the telescopic end of the telescopic rod is rotatably connected to the rotating base, and the fixed end is connected to the fixed base.

[0006] Furthermore, it further includes a controller, which is connected to each telescopic rod and is used to control the telescopic rods to expand and contract, so as to adjust the inclination angle of the cylindrical pipe.

[0007] Further, it includes at least three displacement monitoring components, which are evenly arranged along the circumferential direction of the inner wall of the cylindrical pipe for monitoring the offset of the drill pipe. The displacement monitoring components are connected to the controller. At least three grooves are provided on the inner wall of the cylindrical pipe, and the displacement monitoring components are placed in the grooves in a one-to-one correspondence.

[0008] Further, each displacement monitoring component includes a housing, a guide wheel and a displacement sensor. The housing is placed and fixed in the groove. Long strip-shaped openings are provided at the central positions of two opposite side surfaces of the housing along the depth direction of the groove. The displacement sensor is arranged in the housing. One end of the displacement sensor is fixed on the inner wall of one end of the housing for detecting the displacement of the guide wheel. The displacement sensor is connected to the controller. The guide wheel is arranged at the other end of the housing. Both ends of the wheel axle of the guide wheel pass through the two openings respectively, so that the guide wheel can move along the length direction of the opening. One side of the guide wheel away from the displacement sensor extends out of the housing and contacts the drill pipe.

[0009] Further, the housing is a cube.

[0010] Further, each support frame includes a vertical beam, a cross beam, an inclined beam and a fixing seat. The fixing seat is fixed on the rock by bolts. The lower end of the vertical beam is connected to the fixing seat. One end of the cross beam is vertically connected to the upper end of the vertical beam, and the other end is connected to the lower end of the vertical beam through the inclined beam. Two adjacent vertical beams are fixedly connected by a connecting beam.

[0011] Compared with the prior art, the technical solution of the present utility model has the following advantages:

[0012] The drill pipe fixing device provided by the present utility model is fixed on the rock through the support seat. The drill pipe is inserted into the cylindrical barrel. The telescopic rod of the verticality adjusting device is telescoped to drive the cylindrical barrel to offset. Since the four verticality adjusting devices are not on the same horizontal line, the four verticality adjusting devices can cooperate with each other to adjust the inclination of the cylindrical barrel, so that the cylindrical barrel is perpendicular to the rock, ensuring that the drill pipe drills perpendicular to the rock. During installation, no matter whether the rock surface is flat or not, the drill pipe can be made perpendicular to the rock through the verticality adjusting device for drilling, ensuring that the drilled holes meet the drilling requirements and are applicable to various complex environments.

[0013] Other advantages, objectives and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 Schematic diagram of the overall structure of the drill pipe fixing device according to an embodiment of the present invention;

[0016] Figure 2 Schematic cross-sectional view of the drill pipe fixing device according to an embodiment of the present invention;

[0017] Figure 3 Schematic diagram of the verticality adjusting device according to an embodiment of the present invention;

[0018] Figure 4 Schematic diagram of the displacement monitoring component according to an embodiment of the present invention. Description of the drawings:

[0020] 1. Cylindrical pipe; 2. Verticality adjusting device; 21. Rotating base; 22. Telescopic rod; 23. Fixed base; 3. Cross beam; 4. Vertical beam; 5. Inclined beam; 6. Connecting beam; 7. Fixed seat; 71. Bolt; 8. Guide wheel; 81. Wheel shaft; 9. Displacement sensor; 10. Housing; 101. Opening. Detailed implementation manners

[0021] The following will describe in detail a specific implementation manner of the present invention in conjunction with the drawings. However, it should be understood that the protection scope of the present invention is not limited by the specific implementation manner.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0023] In the embodiments of the present utility model, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0024] As Figure 1 , Figure 2 , Figure 3 As shown, the embodiments of the present utility model provide a drill pipe fixing device, which includes a cylindrical pipe 1, a support seat, and four plumb bob devices 2. The cylindrical pipe 1 is used to guide the drill pipe. The inner diameter of the cylindrical pipe 1 is the same as the outer diameter of the drill pipe. The support seat includes four support frames and four connecting beams 6. Adjacent two support frames are fixedly connected by the connecting beam 6. The four plumb bob devices 2 cooperate with each other to adjust the inclination angle of the cylindrical pipe 1. The four plumb bob devices 2 are arranged circumferentially along the outer wall of the cylindrical pipe 1 and are not at the same height. The plumb bob devices 2 are connected to the upper ends of the support frames in a one-to-one correspondence. Each plumb bob device 2 includes a rotating base 21, a telescopic rod 22, and a fixed base 23. The rotating base 21 is fixed on the cylindrical pipe 1, the fixed base 23 is fixed on the upper end of the support frame, the telescopic end of the telescopic rod 22 is rotatably connected to the rotating base 21, and the fixed end is connected to the fixed base 23.

[0025] It can be understood that the drill pipe fixing device is fixed on the rock through the support seat, the drill pipe is inserted into the cylindrical tube 1, and the inclination angle of the cylindrical tube 1 is adjusted through the plumb bob device 2, so that the cylindrical tube 1 is perpendicular to the rock, ensuring that the drill pipe drills perpendicular to the rock. During installation, regardless of whether the rock surface is flat or not, the inclination angle of the drill pipe can be adjusted through the plumb bob device 2 to drill perpendicular to the rock, ensuring that the drilled holes meet the drilling requirements and are applicable to various complex environments.

[0026] It should be noted that when adjusting the inclination angle of the cylindrical pipe 1 through the plumb bob device 2, the inclination angle of the fixing device of the present invention and the inclination angle of the rock can be measured separately by a level instrument, and then the inclination angle of the cylindrical pipe 1 can be calculated to adjust the cylindrical pipe.

[0027] Preferably, the cylindrical pipe 1 is a steel pipe, which is economical and durable, can reduce production costs, and improve the economy of the device.

[0028] Furthermore, in the embodiments of the present invention, a controller (not shown in the figure) is further included. The controller is connected to each telescopic rod 22 and is used to control the telescopic movement of the telescopic rod 22, thereby adjusting the inclination angle of the cylindrical pipe 1.

[0029] Furthermore, in the embodiments of the present utility model, the four plumb bob devices 2 are arranged at equal intervals circumferentially along the outer wall of the cylindrical pipe 1.

[0030] It can be understood that arranging the vertical adjustment devices 2 at equal intervals is convenient for adjustment by the staff.

[0031] Due to the hardness, irregularity and many joints and fissures of gneiss, the drill bit is twisted or eccentrically rotated by wear during the drilling process of the existing rotary drilling method, causing the diameter of the pile section within the designed pile length to exceed the ±20mm limit. Not only can it not meet the drilling inspection regulations, but the sudden change in the pile diameter is likely to cause stress concentration, which is extremely unfavorable to pile formation. Therefore, it is necessary to detect whether the drill rod is offset during the drilling process so that timely adjustments can be made.

[0032] like Figure 4 As shown, in an embodiment of the utility model, at least three displacement monitoring components are arranged at equal intervals along the circumference of the inner wall of the cylindrical tube 1, and are used to monitor the offset of the drill rod, wherein at least three grooves are provided on the inner wall of the cylindrical tube 1, and the displacement monitoring components are placed in the grooves one by one, and the displacement monitoring components are connected to the controller.

[0033] It should be noted that the diameter of the circle drawn at the point of each displacement monitoring component close to the center axis of the cylindrical tube 1 is the same as the diameter of the drill rod. Different diameters will result in the drill rod being unable to extend into the cylindrical tube 1 and the displacement monitoring component being unable to contact the drill rod, resulting in inaccurate measurement results.

[0034] It can be understood that when the displacement monitoring component detects that the deviation of the drill rod is greater than the technical parameter requirement, the drilling work of the drill rod is stopped and the hammer adjustment device 2 is readjusted to make the drilling meet the drilling requirements.

[0035] Furthermore, in the embodiment of the utility model, each displacement monitoring component includes a shell 10, a guide wheel 8 and a displacement sensor 9. The shell 10 is placed and fixed in the groove. Two opposite sides of the shell are provided with a long strip opening 101 along the depth direction of the groove. The displacement sensor 9 is arranged in the shell 10. The displacement sensor 9 is fixed on the inner wall of one end of the shell 10 for detecting the displacement of the guide wheel 8. The displacement sensor 9 is connected to the controller. The guide wheel 8 is arranged at the other end of the shell 10. Both ends of the wheel axle 81 of the guide wheel 8 pass through the openings 101 respectively, so that the guide wheel 8 can move along the length direction of the opening 101 to squeeze the displacement sensor 9, wherein the side of the guide wheel 8 away from the displacement sensor 9 extends out of the shell 10 to contact the drill rod.

[0036] Optionally, the housing 10 is a rectangular parallelepiped.

[0037] It can be understood that the guide wheel 8 is in contact with the drill rod, and the displacement sensor 9 can detect the offset of the drill rod in real time.

[0038] It can be understood that the use of guide wheels and displacement sensors for control can reduce errors and waste in the drilling process and reduce the impact on the environment.

[0039] It can be understood that the adjustment function of the vertical adjustment device 2 and the real-time monitoring of the displacement sensor 9 can ensure the verticality of the drill pipe, thereby improving the accuracy and efficiency of drilling.

[0040] Furthermore, in the embodiment of the present utility model, each support frame includes a vertical beam 4, a cross beam 3, an inclined beam 5 and a fixed seat 7. The fixed seat 7 is fixed on the rock by bolts 71. The lower end of the vertical beam 4 is connected to the fixed seat 7. One end of the cross beam 3 is vertically connected to the upper end of the vertical beam 4, and the other end is connected to the lower end of the vertical beam 4 through the inclined beam 5. Two adjacent vertical beams 4 are fixedly connected by a connecting beam 6.

[0041] Furthermore, the mutual welding of components such as the cross beam 3, the vertical beam 4, the inclined support 5 and the connecting beam 6 provides a stable support structure, ensuring the stability and safety of the drilling control device during use.

[0042] During construction, the drill pipe fixing device is assembled in the factory. During on-site construction, it is only necessary to fix the drill pipe fixing device on the rock by bolts, and adjust the casing through the vertical adjustment device, which greatly reduces the workload at the construction site, ensures the project quality and improves the construction efficiency.

[0043] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0044] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples here.

Claims

1. A drill pipe fixing device, characterized in that, Comprising: A cylindrical pipe (1) for guiding a drill pipe, the cylindrical pipe (1) being in clearance fit with the drill pipe; A support base, the support base including four support frames and four connecting beams (6), adjacent two of the support frames being fixedly connected by the connecting beam (6); Four verticality adjusting devices (2), the four verticality adjusting devices (2) being arranged at circumferential offsets along the outer wall of the cylindrical pipe (1), the verticality adjusting devices (2) being connected to the upper ends of the support frames in a one-to-one correspondence, each verticality adjusting device (2) including a rotating base (21), a telescopic rod (22), and a fixed base (23), the rotating base (21) being fixed on the cylindrical pipe (1), the fixed base (23) being fixed on the upper end of the support frame, the telescopic end of the telescopic rod (22) being rotatably connected to the rotating base (21), and the fixed end being fixed on the fixed base (23).

2. A drill pipe fixing device according to claim 1, characterized in that, It further includes a controller, the controller being connected to each telescopic rod (22) for controlling the telescopic movement of the telescopic rod (22) so as to adjust the inclination angle of the cylindrical pipe (1).

3. The drill pipe fixing device according to claim 2, characterized in that, Comprising at least three displacement monitoring components, which are arranged at equal intervals along the circumferential direction of the inner wall of the cylindrical pipe (1) for monitoring the offset of the drill pipe, the displacement monitoring components being connected to the controller; Wherein, at least three grooves are provided on the inner wall of the cylindrical pipe (1), and the displacement monitoring components are respectively placed in the grooves in a one-to-one correspondence.

4. A drill pipe fixing device according to claim 3, characterized in that, Each displacement monitoring component includes a housing (10), a guide wheel (8), and a displacement sensor (9); The housing (10) is placed and fixed in the groove, and long strip-shaped openings (101) are provided on two opposite sides of the housing (10) along the depth direction of the groove; The displacement sensor (9) is arranged in the housing (10), the displacement sensor (9) being fixed on the inner wall at one end of the housing (10) for detecting the displacement of the guide wheel (8), the displacement sensor (9) being connected to the controller; The guide wheel (8) is arranged at the other end of the housing (10), both ends of the axle (81) of the guide wheel (8) passing through the two openings (101) respectively so that the guide wheel (8) can move along the length direction of the opening (101), wherein the side of the guide wheel (8) away from the displacement sensor (9) extends out of the housing (10) to contact the drill pipe.

5. The drill pipe fixing device according to claim 4, characterized in that The housing (10) is a cube.

6. A drill pipe fixing device according to claim 1, characterized in that, Each support frame includes a vertical beam (4), a cross beam (3), an inclined beam (5), and a fixed seat (7); The fixed seat (7) is fixed on the rock by bolts (71), the lower end of the vertical beam (4) is connected to the fixed seat (7), one end of the cross beam (3) is vertically connected to the upper end of the vertical beam (4), and the other end is connected to the lower end of the vertical beam (4) through the inclined beam (5), and two adjacent vertical beams (4) are fixedly connected by the connecting beam (6).

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