A well drilling make-up assist device
By installing two pairs of rigid straightening plates in the drilling joint auxiliary device, the problem of poor drill string straightening effect was solved, and efficient and safe drill string coupling operation was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOPEC OILFIELD SERVICE CORPORATION
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-02
AI Technical Summary
In existing drilling connection automatic lead-ahead devices, the drill string straightening effect is poor, resulting in high physical exertion for operators and potential safety hazards.
Two pairs of rigid straightening plates are installed on the straightening arc plate. The upper pair is used to guide and straighten the lower end of the drill pipe, and the lower pair is used to straighten the upper end of the drill tool. The rigid straightening plates are tangent to the straightening arc plate and are operated using the lever principle.
It improved the drilling tool alignment effect, reduced the physical exertion of operators, reduced safety hazards, and achieved efficient drilling tool alignment.
Smart Images
Figure CN224314932U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drill pipe alignment devices, and in particular relates to an auxiliary device for drilling single pipe connection. Background Technology
[0002] In oil drilling engineering, when connecting a single angular drill pipe, the angular drill pipe needs to be manually pulled at an angle to the mouse hole and connected to the single drill pipe in the mouse hole. This is extremely physically demanding for the operators and inefficient. In addition, the surface of the drilling platform is sometimes slippery due to mud, making it easy to fall and be injured by the drill pipe during operation, which poses a safety hazard.
[0003] To address the aforementioned technical issues, Chinese utility model patent CN209924944U discloses an automatic single-rod hooking device. This device includes a handle rod, a pull rod, and a straightening arc plate. The outer wall of the straightening arc plate is hinged to the bottom of the handle rod. One end of the pull rod is hinged to the middle of the handle rod, and the other end is integrally provided with a hook for hooking the bottom end of the angular drill rod. Two guide plates are symmetrically arranged on both sides of the opening at the upper part of the straightening arc plate to facilitate the smooth guidance of the angular drill rod into the inner side of the straightening arc plate. The lower end of the straightening arc plate is also provided with a straightening ring for clamping onto the outer wall of the drill bit. The straightening ring is a thin-walled elastic element with a notch on one side.
[0004] The device is used as follows: First, slip the centering ring and centering arc plate onto the drill string from the top. Then, hook the angular drill rod with the hook, pull the handle backward, and press down to move the lower end of the angular drill rod towards the drill string. Guided by the guide plate, the lower end of the angular drill rod enters the inner side of the centering arc plate. Next, align the lower end of the angular drill rod with the drill string and engage them. Finally, pull the centering arc plate from one side of the drill string. The centering ring opens to both sides, allowing the drill string to pass through the notch on the centering ring. Finally, remove the centering arc plate. This device utilizes the lever principle to pull the angular drill rod, making operation labor-saving and efficient.
[0005] The function of the centering ring in this device is to hold the drill string and center it during the alignment process. However, to facilitate the smooth removal of the centering arc plate, the centering ring needs good elasticity, meaning its rigidity is poor, making it difficult to achieve a good centering effect on the drill string. Furthermore, because the centering ring is located at the bottom of the centering arc plate, its centering position on the drill string is relatively low, making the upper part of the drill string prone to significant sway, which also leads to a poor centering effect. Poor centering of the drill string will directly cause the alignment of the angular drill pipe and the drill string to fail, so operators need to manually center the drill string on-site, which still poses a safety hazard. Utility Model Content
[0006] The purpose of this utility model is to provide a drilling single-joint auxiliary device to solve the technical problem of poor drill bit straightening effect of the existing single-joint automatic clamping device.
[0007] To achieve the above objectives, the technical solution of the drilling single-joint auxiliary device provided by this utility model is as follows:
[0008] A drilling joint single-pipe auxiliary device includes a pressure rod, a straightening arc plate, and a tie rod. The tie rod is rotatably connected to the middle of the pressure rod, and the straightening arc plate is rotatably connected to one end of the pressure rod. The straightening arc plate has an opening on one radial side so that it can semi-enclose and abut against one side of the drill string. Two pairs of rigid straightening plates are arranged vertically at intervals at the opening of the straightening arc plate. The two pairs of rigid straightening plates are located at the middle position in the vertical direction of the straightening arc plate. The two rigid straightening plates of the same pair are located on both sides of the opening and have an outward expansion structure. The upper pair of rigid straightening plates is used to guide and straighten the lower end of the drill string, and the lower pair of rigid straightening plates is used to straighten the upper end of the drill string.
[0009] As a further improvement, the rigid straightening plates are all outwardly curved arc plates, and the rigid straightening plates and the straightening arc plates are tangent at the connection position. The two rigid straightening plates of the same pair gradually expand outward from the position close to the straightening arc plate to the position far away from the straightening arc plate.
[0010] As a further improvement, the radius of the rigid straightening plate is larger than the radius of the straightening arc plate.
[0011] As a further improvement, the straightening arc plate is half of the whole cylinder. The rigid straightening plate includes a straightening section and a guiding section. The straightening section is connected to the straightening arc plate and is tangent at the connection. The guiding section is connected to the end of the straightening section away from the straightening arc plate. The straightening sections of the two rigid straightening plates in the same pair are parallel to each other. The guiding section gradually expands outward from the position close to the straightening section to the position away from the straightening section.
[0012] As a further improvement, the guide section is an outwardly curved arc-shaped structure and the guide section and the straightening section are tangent at the joint position.
[0013] As a further improvement, the rigid straightening plate includes a straightening arc segment and a guiding arc segment. The straightening arc segment is connected to the straightening circular arc plate, and the guiding arc segment is connected to the end of the straightening arc segment away from the guiding arc segment. The radius of the straightening arc segment is the same as the radius of the straightening circular arc plate, and the straightening arc segment and the straightening circular arc plate are concentrically set. The guiding arc segment bends outward and is tangent to the straightening arc segment at the joint position. The guiding arc segment gradually expands outward from the position close to the straightening arc segment to the position away from the straightening arc segment.
[0014] As a further improvement, the vertical spacing between the two pairs of rigid straightening plates is greater than one-quarter of the vertical dimension of the straightening arc plate and less than one-half of the vertical dimension of the straightening arc plate.
[0015] As a further improvement, the upper end of the straightening arc plate is a limiting plate with an outward expansion structure, and the limiting plate is continuously and integrally set along the circumference of the straightening arc plate.
[0016] As a further improvement, the pressure rod includes a main rod body and an adjusting rod body. The straightening arc plate and the pull rod are both connected to the main rod body. The adjusting rod body is located at the end of the main rod body away from the straightening arc plate. The end of the adjusting rod body away from the main rod body is inclined in the direction away from the pull rod. When the hook of the pull rod is located directly above the straightening arc plate, the main rod body is in an inclined state, and the adjusting rod body is in a horizontal state.
[0017] As a further improvement, a handle is fixedly installed at the end of the pressure bar away from the straightening arc plate, and the extension direction of the handle is perpendicular to the extension direction of the pressure bar.
[0018] The beneficial effects are as follows: The drilling joint auxiliary device provided by this utility model is an improvement on the existing technology. This utility model features two pairs of rigid straightening plates arranged vertically on a straightening arc plate. The upper pair of rigid straightening plates guides and straightens the lower end of the drill string, while the lower pair straightens the upper end of the drill string. Because the two rigid straightening plates in the same pair have an outward-expanding structure, the straightening arc plate can be placed against the drill string from the horizontal side or detached from the drill string horizontally. Compared to the elastic straightening ring in the prior art, the lower rigid straightening plate in this utility model can be made of rigid material to achieve a better straightening effect. Furthermore, because the lower rigid straightening plate is positioned higher than the straightening ring in the prior art, it provides a better straightening effect on the drill string. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0020] Figure 2 This is a front view of Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0021] Figure 3 This is a bottom view of Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0022] Figure 4 This is a side view of Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0023] Figure 5 This is a front view of the straightening arc plate in Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0024] Figure 6 This is a side view of the straightening arc plate in Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0025] Figure 7 This is a bottom view of the straightening arc plate in Embodiment 1 of the drilling single-joint auxiliary device of this utility model;
[0026] Figure 8 This is a bottom view of the straightening arc plate in Embodiment 2 of the drilling single-joint auxiliary device of this utility model;
[0027] Figure 9 This is a bottom view of the straightening arc plate in Embodiment 3 of the drilling single-joint auxiliary device of this utility model;
[0028] Figure 10 This is a bottom view of the straightening arc plate in Embodiment 4 of the drilling single-joint auxiliary device of this utility model;
[0029] Figure 11 This is a bottom view of the straightening arc plate in Embodiment 5 of the drilling single-joint auxiliary device of this utility model.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Pressure rod; 11. Main rod body; 12. Adjusting rod body; 2. Handle; 3. Straightening arc plate; 4. Pull rod; 5. Pull hook; 6. Limiting plate; 7. Rigid straightening plate; 71. Straightening section; 72. Guide section; 73. Straightening arc section; 74. Guide arc section; 8. Hinge seat. Detailed Implementation
[0032] The present invention will be further described in detail below with reference to the embodiments.
[0033] To address the problems in the prior art, the basic concept of this utility model is to configure the lower rigid straightening plate used to straighten the drill bit as a rigid structure.
[0034] Specific embodiment 1 of the drilling single-joint auxiliary device provided by this utility model:
[0035] A drilling connection single-joint auxiliary device, see attached. Figure 1 It includes a pressure rod 1, a handle 2, a straightening arc plate 3, and a pull rod 4.
[0036] Combined with appendix Figure 2 Appendix Figure 3 and attached Figure 4 When in use, the pressure rod 1 is tilted. The straightening arc plate 3 is connected to its lower end, the handle 2 is connected to its upper end, and the pull rod 4 is connected to its middle position. The pull rod 4 and the auxiliary arc plate are both hinged to the pressure rod 1, and the handle 2 is welded to the pressure rod 1.
[0037] The straightening arc plate 3 is used to press against one side of the drill string and straighten the drill string and angular drill pipe. A hook 5 is provided at the end of the pull rod 4 furthest from the pressure rod 1. In use, the hook 5 can hook the lower end of the angular drill pipe. The operator presses the upper end of the pressure rod 1 downwards, and the lower end of the angular drill pipe is pulled towards the drill string using leverage. The handle 2 is a short rod, and its extension direction is perpendicular to the extension direction of the pressure rod 1 for easy gripping by the operator.
[0038] The pressure rod 1 includes a main rod body 11 and an adjusting rod body 12. The straightening arc plate 3 and the pull rod 4 are both connected to the main rod body 11. The adjusting rod body 12 is located at the upper end of the main rod body 11, with the end of the adjusting rod body 12 away from the main rod body 11 tilted towards the side of the main rod body 11 away from the pull rod 4. The angle between the adjusting rod body 12 and the main rod body 11 is obtuse. During use, when the pull rod 4 pulls the lower end of the angular drill rod directly above the drill bit, that is, when the hook 5 of the pull rod 4 is directly above the straightening arc plate 3, the main rod body 11 is tilted, while the adjusting rod body 12 is horizontal. The adjusting rod body 12 facilitates downward pressure operations for the operator and also provides a gripping space.
[0039] See appendix Figure 5 Appendix Figure 6 and attached Figure 7 The outer side of the straightening arc plate 3 is provided with a hinge seat 8 for hinged with the pressure rod 1. The side of the straightening arc plate 3 that is radially away from the hinge seat 8 is open. The straightening arc plate 3 can use this opening to make its inner side abut against the outer side of the drill bit, forming a semi-enclosed cover on the outer circumference of the drill bit.
[0040] The size of the opening on the straightening arc plate 3 needs to be large enough for the drill bit to pass through. Furthermore, to ensure a good straightening effect, the curvature of the inner surface of the straightening arc plate 3 needs to match the curvature of the outer surface of the drill bit. Therefore, the central angle corresponding to the straightening arc plate 3 should not exceed 180° and should not be less than 90°. In this embodiment, the central angle corresponding to the straightening arc plate 3 is equal to 180°, meaning the straightening arc plate 3 is half the length of the entire cylinder.
[0041] The upper end of the straightening arc plate 3 is a limiting plate 6 with an outwardly expanding structure. The limiting plate 6 is continuously and integrally set along the circumference of the straightening arc plate 3. Specifically, the limiting plate 6 can be integrally formed on the straightening arc plate 3 by stamping. The limiting plate 6 is used to limit the lower end of the square drill rod, preventing excessive movement of the lower end of the square drill rod and improving the convenience of operation. The integrally set limiting plate 6 has high strength, preventing deformation or breakage due to impact from the square drill rod during use.
[0042] Two pairs of rigid straightening plates 7 are arranged vertically at the opening of the straightening arc plate 3. The two pairs of rigid straightening plates 7 are located in the middle of the vertical direction of the straightening arc plate 3. The upper pair of rigid straightening plates 7 is the upper straightening plate, and the lower pair of rigid straightening plates 7 is the lower straightening plate. The upper straightening plate is used to guide and straighten the lower end of the square drill pipe, and the lower straightening plate is used to straighten the upper end of the drill string, so as to accurately align the lower end of the square drill pipe and the upper end of the drill string.
[0043] Each rigid stabilizer plate 7 is an outwardly curved arc plate, and the rigid stabilizer plate 7 is tangent to the stabilizer arc plate 3 at the connection point. The ends of the two rigid stabilizer plates 7 in the same pair that are furthest from the stabilizer arc plate 3 are spaced far apart, allowing the target object to be roughly aligned and placed between the two rigid stabilizer plates 7 during use. The closer the two rigid stabilizer plates 7 are to the stabilizer arc plate 3, the smaller the distance between them, thus guiding the target object. For the lower stabilizer plates, after rough alignment of the drill string, the drill string can be positioned between the two lower stabilizer plates, and then the stabilizer arc plate 3 can be moved to accurately abut against the drill string. For the upper stabilizer plates, after rough alignment of the lower end of the angular drill pipe, it can be placed between the two upper stabilizer plates, and then aligned with the drill string under the guidance of the upper stabilizer plates.
[0044] The rigid straightening plate 7 is an arc-shaped plate, which can smoothly guide the target object. The radius of the rigid straightening plate 7 can be designed as needed. In this embodiment, the radius of the rigid straightening plate 7 is larger than the radius of the straightening arc plate 3. In this way, the distance between the two rigid straightening plates 7 in the same pair near the straightening arc plate 3 changes little, thus enabling better straightening of the target object.
[0045] The purpose of straightening the angular drill pipe and drill string is to enable them to be efficiently engaged. The key to straightening lies in the position of the lower end of the angular drill pipe and the upper end of the drill string. If the lower straightening plate is positioned too low on the drill string, the overhang of the drill string above the lower straightening plate will be too long, leading to significant swaying and poor straightening effect. A similar problem exists with the upper straightening plate. Therefore, the vertical distance between the upper and lower straightening plates should not be too large. Through practical experience, a vertical distance between the two pairs of rigid straightening plates 7 that is greater than one-quarter of the vertical dimension of the straightening arc plate 3 and less than one-half of the vertical dimension of the straightening arc plate 3 achieves a good straightening effect. Preferably, the vertical distance between the two pairs of rigid straightening plates 7 is equal to one-third of the vertical dimension of the straightening arc plate 3.
[0046] The straightening arc plate 3 needs to have certain vertical dimensions. These dimensions ensure that, during use, the lower end of the straightening arc plate 3 is close to the mouse hole, the upper end is higher than the upper end of the drill bit, and the upper end of the drill bit is located in the middle of the straightening arc plate 3. For the lower straightening plate to have a good straightening effect on the drill bit, its position on the straightening arc plate 3 should not be too low. Specifically, the lower straightening plate needs to be positioned between one-quarter and one-half of the lower part of the straightening arc plate 3. Preferably, the lower straightening plate is positioned at one-third of the lower part of the straightening arc plate 3.
[0047] Compared to existing technologies, this drilling joint auxiliary device uses a lower centralizing plate with the same shape and size as the upper centralizing plate to centralize the drill string. Therefore, the centralizing arc plate 3 can either rest against the drill string from its horizontal side or detach from it horizontally. Compared to the elastic centralizing ring in existing technologies, the lower centralizing plate in this invention can be made of a rigid material to achieve a better centralizing effect. Furthermore, because the lower centralizing plate is positioned higher than the centralizing ring in existing technologies, it provides an even better centralizing effect on the drill string.
[0048] Specific embodiment 2 of the drilling single-joint auxiliary device provided by this utility model:
[0049] This embodiment is based on Embodiment 1, and the difference from Embodiment 1 is as follows (see Appendix). Figure 8 In this embodiment, the rigid straightening plate 7 includes a straightening section 71 and a guiding section 72. The straightening section 71 is connected to the straightening arc plate 3, and the guiding section 72 is located at the end of the straightening section 71 away from the straightening arc plate 3. The straightening section 71 is a flat plate structure, and the guiding section 72 is an outwardly curved arc plate structure.
[0050] The straightening section 71 is tangent to the straightening arc plate 3 at the joint position, so the straightening sections 71 in the two rigid straightening plates 7 of the same pair are parallel to each other. The guiding section 72 is tangent to the straightening section 71 at the joint position, so the guiding section 72 in the two rigid straightening plates 7 of the same pair has a gradually expanding structure in the direction away from the straightening section 71.
[0051] Since the straightening sections 71 of the two rigid straightening plates 7 in the same pair are evenly spaced, they can maintain a good straightening effect on the target object over a large range, thus further improving the straightening effect.
[0052] Specific embodiment 3 of the drilling single-joint auxiliary device provided by this utility model:
[0053] This embodiment is based on Embodiment 2, and the difference between it and Embodiment 2 is as follows (see Appendix). Figure 9 In this embodiment, both the straightening section 71 and the guiding section 72 are flat plate structures. The end of the guiding section 72 away from the straightening section 71 is inclined outward, so that the guiding section 72 and the straightening section 71 are arranged at an obtuse angle.
[0054] In this embodiment, the guiding segments 72 of the two rigid straightening plates 7 in the same pair can also form a structure that gradually expands outward from the position where they are joined with the straightening segment 71 to the direction away from the straightening segment 71, thus also being able to guide the target object. In this embodiment, the straightening segments 71 of the two rigid straightening plates 7 in the same pair are parallel to each other and have a uniform spacing, thus also being able to maintain a good straightening effect on the target object over a large range.
[0055] Specific embodiment 4 of the drilling single-joint auxiliary device provided by this utility model:
[0056] This embodiment is based on Embodiment 1, and the difference from Embodiment 1 is as follows (see Appendix). Figure 10 In this embodiment, the central angle corresponding to the straightening arc plate 3 is equal to 120°, which means that the straightening arc plate 3 is one-third of the whole cylinder. The straightening arc plate 3 in this embodiment is smaller in size, lighter in weight, and more flexible in use, making it easier to avoid other equipment on the drilling platform.
[0057] However, as the size of the straightening arc plate 3 decreases, its ability to straighten the drill bit and square drill pipe decreases. To ensure the straightening effect, in this embodiment, the rigid straightening plate 7 is configured as a straightening arc segment and a guiding arc segment 74. The straightening arc segment 73 is fixedly connected to the straightening arc plate 3, and the radii of the straightening arc segment 73 and the straightening arc segment are equal and concentrically arranged. The guiding arc segment 74 is located at the end of the straightening arc segment 73 away from the straightening arc plate 3, and the guiding arc segment 74 bends outward. The guiding arc segment 74 and the straightening arc segment 73 are tangent at the joint.
[0058] The guiding arc segment 74 is used to guide the target object, while the straightening arc segment 73 plays the same role as the original straightening arc plate 3 to straighten the drill pipe or drill string. In this way, even after the size of the straightening arc plate 3 is reduced, the drilling connection single auxiliary device can still have a good straightening effect.
[0059] Specific embodiment 5 of the drilling single-joint auxiliary device provided by this utility model:
[0060] This embodiment is based on Embodiment 1, and the difference from Embodiment 1 is as follows (see Appendix). Figure 11 In this embodiment, the rigid straightening plates 7 are all flat plates. The ends of the two rigid straightening plates 7 in the same pair that are away from the straightening arc plate 3 are tilted outward, so that the two rigid straightening plates 7 in the same pair can guide and straighten the target object.
[0061] Specific embodiment 6 of the drilling single-joint auxiliary device provided by this utility model:
[0062] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no handle perpendicular to the pressure bar is provided in this embodiment. The operator directly holds the upper end of the pressure bar during operation.
[0063] Specific embodiment 7 of the drilling single-joint auxiliary device provided by this utility model:
[0064] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no adjustment rod is provided in this embodiment, and the handle is directly fixed to the upper end of the main rod.
[0065] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A drilling joint single-joint auxiliary device, comprising a pressure rod, a straightening arc plate, and a tie rod, wherein the tie rod is rotatably connected to the middle of the pressure rod, the straightening arc plate is rotatably connected to one end of the pressure rod, and the straightening arc plate has an opening on one radial side to allow it to semi-enclose and abut against one side of the drill string, characterized in that, Two pairs of rigid straightening plates are arranged at intervals at the opening of the straightening arc plate. The two pairs of rigid straightening plates are located in the middle of the straightening arc plate in the vertical direction. The two rigid straightening plates of the same pair are located on both sides of the opening and have an outward expansion structure. The upper pair of rigid straightening plates is used to guide and straighten the lower end of the drill pipe, and the lower pair of rigid straightening plates is used to straighten the upper end of the drill bit.
2. The drilling connection auxiliary device according to claim 1, characterized in that, The rigid straightening plates are all outward-curving arc plates. The rigid straightening plates and the straightening arc plates are tangent at the connection point. The two rigid straightening plates in the same pair gradually expand outward from the position closer to the straightening arc plate to the position farther away from the straightening arc plate.
3. The drilling connection auxiliary device according to claim 2, characterized in that, The radius of the rigid straightening plate is larger than the radius of the straightening arc plate.
4. The drilling connection auxiliary device according to claim 1, characterized in that, The straightening arc plate is half of the whole cylinder. The rigid straightening plate includes a straightening section and a guiding section. The straightening section is connected to the straightening arc plate and is tangent at the connection. The guiding section is connected to the end of the straightening section away from the straightening arc plate. The straightening sections of the two rigid straightening plates in the same pair are parallel to each other. The guiding section gradually expands outward from the position close to the straightening section to the position away from the straightening section.
5. The drilling connection auxiliary device according to claim 4, characterized in that, The guide section is an outwardly curved arc-shaped structure, and the guide section and the straightening section are tangent at the joint position.
6. The drilling connection auxiliary device according to claim 1, characterized in that, The rigid straightening plate includes a straightening arc segment and a guiding arc segment. The straightening arc segment is connected to the straightening circular arc plate, and the guiding arc segment is connected to the end of the straightening arc segment away from the guiding arc segment. The radius of the straightening arc segment is the same as the radius of the straightening circular arc plate, and the straightening arc segment and the straightening circular arc plate are concentrically set. The guiding arc segment bends outward and is tangent to the straightening arc segment at the joint position. The guiding arc segment gradually expands outward from the position close to the straightening arc segment to the position away from the straightening arc segment.
7. The drilling single-joint auxiliary device according to any one of claims 1-6, characterized in that, The vertical distance between the two pairs of rigid straightening plates is greater than one-quarter of the vertical dimension of the straightening arc plate and less than one-half of the vertical dimension of the straightening arc plate.
8. The drilling single-joint auxiliary device according to any one of claims 1-6, characterized in that, The upper end of the straightening arc plate is a limiting plate with an outward expansion structure. The limiting plate is continuously and integrally set along the circumference of the straightening arc plate.
9. The drilling single-joint auxiliary device according to any one of claims 1-6, characterized in that, The pressure rod includes a main rod body and an adjusting rod body. The straightening arc plate and the pull rod are both connected to the main rod body. The adjusting rod body is located at the end of the main rod body away from the straightening arc plate. The end of the adjusting rod body away from the main rod body is inclined in the direction away from the pull rod. When the pull hook of the pull rod is directly above the straightening arc plate, the main rod body is in an inclined state, and the adjusting rod body is in a horizontal state.
10. The drilling single-joint auxiliary device according to any one of claims 1-6, characterized in that, A handle is fixedly installed at the end of the pressure rod away from the straightening arc plate, and the extension direction of the handle is perpendicular to the extension direction of the pressure rod.