High-perpendicularity drilling deviation rectifying device

Abstract

The utility model relates to the technical field of drilling, and discloses a high-perpendicularity drilling deviation rectifying device which comprises a transmission cylinder and a drill rod driven in the transmission cylinder, an outer protection cylinder and an inner protection cylinder are arranged on the outer side of the drill rod, and the inner protection cylinder is located between the outer protection cylinder and the drill rod. A supporting plate is installed between the inner wall of the outer protection barrel and the surface of the inner protection barrel, and a fixing frame is installed between the top of the outer protection barrel and the bottom of the transmission barrel. The buffering rod piece, the folding spring piece and the pressure sensor are arranged to form a multifunctional buffering structure, and then a double-space supporting device formed by the three sets of multifunctional buffering structures, the outer protection barrel and the inner protection barrel, the transmission barrel and the drill rod are combined for use. The pressure sensor can carry out real-time pressure detection on the buffer state of the buffer rod piece to feed back the drilling deviation amplitude of the drill rod while the buffer rod piece is utilized to be linked with the corresponding folding spring piece to carry out flexible buffer deviation correction on the drill rod in the drilling state.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, specifically a high verticality drilling correction device. Background Technology

[0002] Drilling is a crucial step in building construction. Its purpose is multifaceted: firstly, to inspect and assess the foundation; secondly, to install pile foundations, enhancing the building's stability; and thirdly, drilling can be used for installing equipment, wiring, and other applications. Therefore, the quality of drilling directly impacts the building's stability, safety, and overall living quality. Consequently, the drilling process must be given due attention during building construction.

[0003] Currently, in the applicant's actual operation, it has been found that the vibration state of the drill rod during the drilling process varies due to different geological conditions. In order to avoid large positional errors in the drilling process, existing technologies usually use rigid support-type correction devices for guidance. However, although this method is effective in the initial stage, the correction effect gradually decreases with the rapid wear between the structures. Therefore, in view of the problems existing in the above-mentioned existing technologies, the applicant will provide a high verticality drilling correction device to solve the problem. Utility Model Content

[0004] This invention provides a high-verticality drilling correction device, which solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a high verticality drilling correction device, including a transmission cylinder, a drill rod driven inside the transmission cylinder, an outer protective cylinder and an inner protective cylinder provided on the outside of the drill rod, and the inner protective cylinder being located between the outer protective cylinder and the drill rod, a support plate being installed between the inner wall of the outer protective cylinder and the surface of the inner protective cylinder, and a fixing frame being installed between the top of the outer protective cylinder and the bottom of the transmission cylinder;

[0006] The inner protective cylinder has several buffer rods fitted around its circumference on its side wall. A folding spring is installed between the surface of one end of the buffer rod and the inner wall of the inner protective cylinder. Two buffer rods in opposite positions can center and clamp the drill rod under the elastic force of their corresponding folding springs.

[0007] The other end of the buffer rod is equipped with a pressure sensor fitted into the side wall of the outer protective cylinder, and the buffer rod can output pressure to the pressure sensor when it is subjected to the drilling offset transmission of the drill rod.

[0008] Preferably, the buffer rod includes a buffer rod body and an arc-shaped correction plate. An installation hole is provided in the side wall of the inner protective cylinder. The middle part of the buffer rod body is engaged in the installation hole, and one end of the buffer rod body is fixedly connected to the middle part of the arc-shaped correction plate. The other end of the buffer rod body extends into the annular space formed by the outer protective cylinder and the inner protective cylinder and is set as a T-shaped structure.

[0009] Preferably, the number of folding spring sheets is not less than two, and the two ends of the folding spring sheets are respectively fixed on the surface of the arc-shaped correction plate and the inner wall of the inner protective cylinder, so as to fully ensure the upper limit effect of displacement buffering of the arc-shaped correction plate.

[0010] Preferably, the inner wall of the arc-shaped correction plate is an arc-shaped structure that fits in contact with the surface of the drill rod, and a damping strip is fixedly nested on the inner wall of the arc-shaped correction plate, thereby extending the damping buffer effect.

[0011] Preferably, the sidewall of the outer protective cylinder is provided with a plurality of sliding grooves along its circumference, and the surface of the outer protective cylinder is provided with a plurality of automatic limiting components along its circumference. The output structure of the automatic limiting components passes through the sliding grooves and is fitted into the annular space formed by the outer protective cylinder and the inner protective cylinder.

[0012] The automatic limiting assembly includes an electric push rod, a linkage plate, and a top pressure limiting plate. A support seat is installed between the housing surface of the electric push rod and the surface of the outer protective cylinder. The top pressure limiting plate is fitted into the annular space formed by the outer and inner protective cylinders and aligned with the gap between the other end of the buffer rod and the inner wall of the inner protective cylinder. The middle part of the linkage plate is engaged in the sliding groove, and the two ends of the linkage plate are respectively fixed to the top surface of the top pressure limiting plate and the output end of the electric push rod. When the drill rod deflection exceeds the preset state, the electric push rod will drive the top pressure limiting plate to move down and limit the corresponding buffer rod through the linkage plate, so that the buffer rod drives the arc-shaped correction plate and the damping strip to perform hard contact limiting correction of the drill rod.

[0013] Preferably, the top pressure limiting plate is internally engaged with a slide rail, which is fixed to the inner wall of the outer protective cylinder. The slide rail provides guidance and constraint for the reciprocating movement of the top pressure limiting plate.

[0014] Preferably, the top pressure limiting plate has a clearance groove in the middle to avoid structural interference, and the front and rear ends of the bottom of the top pressure limiting plate near the inner protective cylinder are provided with inclined structures to facilitate subsequent top pressure output.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model uses a multi-functional buffer structure composed of buffer rods, folding spring sheets, and pressure sensors. Subsequently, when the three sets of multi-functional buffer structures are combined with the double-space support device formed by the outer protective cylinder and the inner protective cylinder, the transmission cylinder, and the drill rod, it can flexibly buffer and correct the drill rod in the drilling state by using the buffer rods to link their corresponding folding spring sheets. At the same time, the pressure sensor can detect the buffer state of the buffer rods in real time to provide feedback on the drilling deviation of the drill rod.

[0017] 2. This utility model sets three automatic limit components as auxiliary structures, which are further combined with the three sets of multi-functional buffer structures mentioned above. When the rotation amplitude of the drill rod exceeds the preset maximum value, the automatic limit components drive the corresponding buffer rod, so that the buffer rod makes fixed contact with the drill rod to hard constrain and correct the deviation of the drill rod, thereby further ensuring the drilling quality of the drill rod. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 4 The structure of this utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 This is a top view of the automatic limiting component of this utility model.

[0023] Figure 6 This is an enlarged schematic diagram of the automatic limiting component of this utility model.

[0024] In the diagram: 1. Transmission cylinder; 2. Drill rod; 3. Outer protective cylinder; 4. Inner protective cylinder; 5. Buffer rod; 51. Buffer rod body; 52. Arc-shaped correction plate; 53. Damping strip; 6. Folding spring sheet; 7. Pressure sensor; 8. Automatic limit assembly; 81. Electric push rod; 82. Linkage plate; 83. Top pressure limit plate; 84. Slide rail. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 A high verticality drilling correction device includes a transmission cylinder 1, a drill rod 2 driven inside the transmission cylinder 1, an outer protective cylinder 3 and an inner protective cylinder 4 provided on the outside of the drill rod 2, and the inner protective cylinder 4 located between the outer protective cylinder 3 and the drill rod 2. A support plate is installed between the inner wall of the outer protective cylinder 3 and the surface of the inner protective cylinder 4, and a fixing frame is installed between the top of the outer protective cylinder 3 and the bottom of the transmission cylinder 1.

[0027] The inner protective cylinder 4 has several buffer rods 5 mounted on its side wall along its circumference. A folding spring plate 6 is installed between the surface of one end of the buffer rod 5 and the inner wall of the inner protective cylinder 4. Two buffer rods 5 in opposite positions can center and clamp the drill rod 2 under the elastic force of their corresponding folding spring plates 6. A pressure sensor 7 is installed on the other end of the buffer rod 5 and is mounted in the side wall of the outer protective cylinder 3. The buffer rod 5 can output pressure to the pressure sensor 7 when it is subjected to the drilling offset transmission of the drill rod 2.

[0028] The buffer rod 5 includes a buffer rod body 51 and an arc-shaped correction plate 52. The inner protective cylinder 4 has an installation hole in its side wall. The middle part of the buffer rod body 51 is inserted into the installation hole, and one end of the buffer rod body 51 is fixedly connected to the middle part of the arc-shaped correction plate 52. The other end of the buffer rod body 51 extends into the annular space formed by the outer protective cylinder 3 and the inner protective cylinder 4 and is set as a T-shaped structure. There are no less than two folded spring plates 6, and the two ends of the folded spring plates 6 are respectively fixed on the surface of the arc-shaped correction plate 52 and the inner wall of the inner protective cylinder 4, which fully ensures the upper limit effect of displacement buffering of the arc-shaped correction plate 52. The inner wall of the arc-shaped correction plate 52 is an arc-shaped structure that fits in contact with the surface of the drill rod 2, and a damping strip 53 is fixedly nested on the inner wall of the arc-shaped correction plate 52, thereby extending the damping buffering effect.

[0029] In use, there are three buffer rods 5 and three pressure sensors 7, and six folding spring plates 6. During the drilling process of the drill rod 2 driving the existing drill bit, the arc-shaped correction plate 52 inside the three buffer rods 5 and the damping strip 53 nested inside the arc-shaped correction plate 52 synchronously receive the deviation pressure generated by the drilling of the drill rod 2. At the same time, the three buffer rods 51 are linked to perform synchronous displacement buffering and damping buffering, and then perform flexible damping correction treatment on the drill rod 2 to ensure the drilling quality of the drill rod 2.

[0030] Considering the need for real-time detection of the eccentric pressure generated by the drilling motion of drill pipe 2, three pressure sensors 7 are set up and linked one-to-one with three buffer rods 51, thereby outputting the pressure data transmitted by the real-time displacement of the three buffer rods 51.

[0031] Please see Figures 1-6 The outer protective cylinder 3 has several sliding grooves along its circumference on its side wall, and several automatic limiting components 8 are installed on the surface of the outer protective cylinder 3 along its circumference. The output structure of the automatic limiting components 8 passes through the sliding grooves and is fitted in the annular space formed by the outer protective cylinder 3 and the inner protective cylinder 4.

[0032] The automatic limit assembly 8 includes an electric push rod 81, a linkage plate 82, and a top pressure limit plate 83. A support seat is installed between the housing surface of the electric push rod 81 and the surface of the outer protective cylinder 3. The top pressure limit plate 83 is fitted into the annular space formed by the outer protective cylinder 3 and the inner protective cylinder 4 and is aligned with the gap between the other end of the buffer rod 51 and the inner wall of the inner protective cylinder 4. The middle part of the linkage plate 82 is engaged in the sliding groove, and the two ends of the linkage plate 82 are respectively fixed to the top surface of the top pressure limit plate 83 and the output end of the electric push rod 81. After the drill rod 2 deflects beyond the preset state, the electric push rod 81 will activate the top pressure limit plate 83 through the linkage plate 81. The moving plate 82 drives the top pressure limiting plate 83 to move down and limit the corresponding buffer rod 51, so that the buffer rod 51 drives the arc-shaped correction plate 52 and the damping strip 53 to perform hard contact limiting correction on the drill rod 2. The top pressure limiting plate 83 is internally connected to the slide rail 84, and the slide rail 84 is fixed on the inner wall of the outer protective cylinder 3. The slide rail 84 provides guidance and constraint for the reciprocating movement of the top pressure limiting plate 83. The top pressure limiting plate 83 is provided with a clearance groove in the middle to avoid structural interference. The front and rear ends of the bottom of the top pressure limiting plate 83 are provided with inclined structures near the inner protective cylinder 4 to facilitate subsequent top pressure output.

[0033] In use, the number of automatic limit components 8 is also set to three. When the pressure data value output by the pressure sensor 7 indicates that the deviation position of the drill rod 2 exceeds the preset maximum value, the three electric push rods 81 are activated. The output end of the electric push rod 81 drives the corresponding linkage plate 82 to link the top pressure limit plate 83. Then, the top pressure limit plate 83 slides automatically under the guidance of its corresponding slide rail 84 until the top pressure limit plate 83 is displaced into the gap between the other end of the buffer rod 51 and the inner wall of the inner protective cylinder 4. Then, the displacement space of the buffer rod 51 is filled and constrained. Finally, the combination formed by the buffer rod 51, the arc-shaped correction plate 52, and the damping strip 53 clamps the drill rod 2 in a fixed manner, and performs hard constraint correction on the drill rod 2 to further ensure the drilling quality of the drill rod 2.

[0034] It should be noted that, in this document, 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. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high verticality drilling correction device, comprising a transmission cylinder (1) and a drill rod (2) driven inside the transmission cylinder (1), characterized in that: The drill rod (2) is provided with an outer protective cylinder (3) and an inner protective cylinder (4) on its outer side, and the inner protective cylinder (4) is located between the outer protective cylinder (3) and the drill rod (2). A support plate is installed between the inner wall of the outer protective cylinder (3) and the surface of the inner protective cylinder (4). A fixing frame is installed between the top of the outer protective cylinder (3) and the bottom of the transmission cylinder (1). The inner protective cylinder (4) has several buffer rods (5) fitted around its circumference. A folding spring plate (6) is installed between the surface of one end of the buffer rod (5) and the inner wall of the inner protective cylinder (4). The two buffer rods (5) in opposite positions can center and clamp the drill rod (2) under the elastic force of their corresponding folding spring plates (6). The other end of the buffer rod (5) is provided with a pressure sensor (7) fitted in the side wall of the outer protective cylinder (3), and the buffer rod (5) can output pressure to the pressure sensor (7) when it is subjected to the drilling offset transmission of the drill rod (2).

2. The high verticality drilling correction device according to claim 1, characterized in that: The buffer rod (5) includes a buffer rod body (51) and an arc-shaped correction plate (52). The inner protective cylinder (4) has an installation hole in its side wall. The middle part of the buffer rod body (51) is engaged in the installation hole, and one end of the buffer rod body (51) is fixedly connected to the middle part of the arc-shaped correction plate (52). The other end of the buffer rod body (51) extends into the annular space formed by the outer protective cylinder (3) and the inner protective cylinder (4) and is set as a T-shaped structure.

3. The high verticality drilling correction device according to claim 2, characterized in that: The number of folding spring sheets (6) is not less than two, and the two ends of the folding spring sheets (6) are respectively fixed on the surface of the arc-shaped correction plate (52) and the inner wall of the inner protective cylinder (4).

4. The high verticality drilling correction device according to claim 2, characterized in that: The inner wall of the arc-shaped correction plate (52) is an arc-shaped structure that is in contact with the surface of the drill rod (2), and a damping strip (53) is fixedly nested on the inner wall of the arc-shaped correction plate (52).

5. The high verticality drilling correction device according to claim 1, characterized in that: The outer protective cylinder (3) has several sliding grooves along its circumference on its side wall, and several automatic limiting components (8) are installed on the surface of the outer protective cylinder (3) along its circumference. The output structure of the automatic limiting component (8) passes through the sliding groove and is fitted in the annular space formed by the outer protective cylinder (3) and the inner protective cylinder (4). The automatic limiting component (8) includes an electric push rod (81), a linkage plate (82), and a top pressure limiting plate (83). A support seat is installed between the housing surface of the electric push rod (81) and the surface of the outer protective cylinder (3). The top pressure limiting plate (83) is fitted in the annular space formed by the outer protective cylinder (3) and the inner protective cylinder (4) and is aligned with the gap between the other end of the buffer rod (51) and the inner wall of the inner protective cylinder (4). The middle part of the linkage plate (82) is engaged in the sliding groove, and the two ends of the linkage plate (82) are respectively fixed on the top surface of the top pressure limiting plate (83) and the output end of the electric push rod (81).

6. The high verticality drilling correction device according to claim 5, characterized in that: The top pressure limiting plate (83) is internally connected to a slide rail (84), and the slide rail (84) is fixed on the inner wall of the outer protective cylinder (3).

7. The high verticality drilling correction device according to claim 5, characterized in that: The top pressure limiting plate (83) is provided with a clearance groove in the middle, and the front and rear ends of the bottom of the top pressure limiting plate (83) near the inner protective cylinder (4) are provided with inclined structures.

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