Drill rod righting and limiting device
By designing a drill pipe straightening and limiting device, the problem of drill pipe slippage and falling during the lifting process of the power head was solved, thus improving safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-03-17
AI Technical Summary
In existing technologies, drill pipes are prone to slippage or even falling off during the lifting process of the power head, posing a safety hazard.
A drill pipe straightening and limiting device was designed, including a drill pipe limiting mechanism and a drill pipe straightening mechanism. Through the cooperation of the limiting plate and the straightening handle, the drill pipe slippage is restricted and the straightening operation is performed.
It effectively prevents drill pipe slippage and falling, improves safety and work efficiency, and is convenient and reliable to use.
Smart Images
Figure CN224002672U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drilling equipment technology, specifically to a drill rod straightening and limiting device. Background Technology
[0002] Drilling rigs with automatic drill rod attachment function effectively reduce the labor intensity of operators while significantly improving work efficiency and operational safety.
[0003] Chinese invention patent CN113236155B discloses an automatic drill rod changing device and a drill rig, which is equipped with a clamping device and a position adjustment device. During the rod changing process, the position adjustment device first positions the robotic arm to the position of the drill rod to be picked up. Then, the robotic arm of the clamping device is driven to perform the clamping action. Finally, the position adjustment device precisely delivers the drill rod to the installation position, thus completing a series of operations such as automatic rod clamping, rod delivery, and rod loading. However, this technical solution has a key technical difficulty in the rod changing process: when the power head lifts the drill rod and moves it to the bottom, completely detaching it from the cylindrical structure, the bottom of the drill rod is suspended in the air because it is only connected to a single point by the power head. This poses a safety hazard of drill rod slippage or even falling during the robotic arm's clamping process. Utility Model Content
[0004] To address the aforementioned deficiencies, the technical problem to be solved by this utility model is to provide a drill pipe straightening and limiting device to solve the safety hazards of drill pipe slippage or even falling in the existing technology.
[0005] Therefore, this application provides a drill pipe straightening and limiting device, including a drill pipe limiting mechanism and a drill pipe straightening mechanism. The drill pipe limiting mechanism includes a limiting plate and a limiting cylinder. The limiting plate can be rotated to the underside of the drill pipe by the limiting cylinder. The drill pipe straightening mechanism is located below the drill pipe limiting mechanism and includes two oppositely arranged straightening handles. The two straightening handles can be opened and closed by the straightening cylinder to clamp or release the drill pipe.
[0006] Based on the above technical solutions, when the power head lifts the drill rod and moves it to the bottom of the drill rod, completely separating it from the cylindrical structure, the limiting plate can be positioned below the drill rod by the drill rod limiting mechanism to prevent the drill rod from slipping and falling, thus improving safety.
[0007] In the above technical solution, preferably, the cylinder body of the limiting cylinder is fixed on the limiting frame, the limiting frame is fixed on the drill mast of the drilling rig by a crossbeam, the limiting frame is also provided with a limiting pressure beam, the limiting plate is horizontally arranged below the limiting pressure beam and connected to the limiting pressure beam by a vertical plate, the limiting pressure beam is provided with a pressure beam roller on the side facing the drill rod, the rotation axis of the pressure beam roller is perpendicular to the axis of the drill rod, the rear end of the limiting pressure beam extends backward to form a first connecting plate, the first connecting plate is hinged to the piston rod end of the limiting cylinder by a first rotating shaft, the side of the limiting pressure beam facing the drill rod is provided with a second connecting plate, the second connecting plate is rotatably connected to the limiting frame by a second rotating shaft.
[0008] In the above technical solution, preferably, the two sets of straightener handles are driven to open and close by two sets of linkage mechanisms driven by straightening cylinders. The cylinder body of the straightening cylinder is fixed at the rear end of the straightener frame, and the two sets of linkage mechanisms are symmetrically arranged along the center line of the straightener frame.
[0009] In the above technical solution, preferably, the linkage mechanism is arranged in the body of the straightener frame, including a front linkage and a rear linkage, one end of the front linkage and one end of the rear linkage are hinged together, the straightener handle is fixed to the front end of the front linkage, and the rear end of the rear linkage is hinged to the piston rod of the straightening cylinder.
[0010] In the above technical solution, preferably, a V-shaped frame assembly is provided on the top surface of the stabilizer frame. The V-shaped frame assembly includes a V-shaped frame, which is fixed on a sliding plate. An elongated hole is provided on the sliding plate along the longitudinal direction of the stabilizer frame. Bolts pass through the elongated hole to fix the V-shaped frame to the top surface of the stabilizer frame. An upwardly bent plate is provided at the rear end of the V-shaped frame. The bent plate is fixedly connected to the stabilizer frame by adjusting bolts. A front roller is rotatably provided on the stabilizer handle. Rear rollers are rotatably provided on the two sides of the V-shaped frame facing the drill rod. The rotation axes of the front roller and the rear roller are respectively perpendicular to the axis of the drill rod.
[0011] In the above technical solution, preferably, the front roller and the rear roller are made of nylon plastic.
[0012] As can be seen from the above technical solution, the drill pipe straightening and limiting device provided by this utility model solves the safety hazard of drill pipe slippage or even falling in the prior art. Compared with the prior art, this utility model has the following beneficial effects:
[0013] Above the drill pipe straightening mechanism is a drill pipe limiting mechanism, which includes a limiting plate and a limiting cylinder. The limiting plate can be rotated to the underside of the drill pipe via the limiting cylinder. The drill pipe straightening mechanism includes two opposing straightening handles, which can be opened and closed by the straightening cylinder to clamp or release the drill pipe. When the power head lifts the drill pipe to the bottom, completely detaching it from the cylindrical structure, the limiting mechanism can position the limiting plate below the drill pipe, preventing the drill pipe from slipping and falling, thus improving safety. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced and explained below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the drill pipe straightening and limiting device provided by the present invention, in which the limiting plate is in a closed state.
[0016] Figure 2 for Figure 1 Top view of the drill pipe straightening and limiting device shown;
[0017] Figure 3 This is a schematic diagram of the drill pipe straightening and limiting device provided by the present invention, in which the limiting plate is in the open state;
[0018] Figure 4 for Figure 3 Top view of the drill pipe straightening and limiting device shown;
[0019] Figure 5 This is a schematic diagram of the drill pipe limiting mechanism in this utility model;
[0020] Figure 6 This is a schematic diagram of the drill pipe straightening mechanism in this utility model;
[0021] Figure 7 for Figure 6 Top view (partial section) of the drill pipe straightening mechanism shown.
[0022] Figures 1-7 The correspondence between the parts is as follows:
[0023] Drill pipe limiting mechanism 10, drill pipe straightening mechanism 20;
[0024] Limiting plate 11, limiting cylinder 12, limiting frame 13, crossbeam 14, limiting pressure beam 15, upright plate 16, pressure beam roller 17, first rotating shaft 18, second rotating shaft 19;
[0025] 21. Sterilizer handle, 22. Sterilizer cylinder, 23. Linkage mechanism, 24. Sterilizer frame;
[0026] Front link 231, rear link 232;
[0027] V-frame assembly 30, V-frame 31, rear roller 32, slide plate 33, elongated hole 34, bolt 35, bend plate 36, adjusting bolt 37. Detailed Implementation
[0028] This utility model provides a drill rod straightening and limiting device. A drill rod limiting mechanism is provided above the drill rod straightening mechanism. When the power head lifts the drill rod and moves it to the bottom of the drill rod and completely separates it from the cylindrical structure, the limiting plate can be positioned below the drill rod through the drill rod limiting mechanism to prevent the drill rod from slipping and falling, thereby improving safety, improving work efficiency, and being easy to use.
[0029] 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 embodiments described below 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.
[0030] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.
[0031] It should be noted that the directional terms such as "inner" and "outer", "front" and "back" and "left" and "right" in this article are based on the product's usage status. Obviously, the use of these directional terms does not limit the scope of protection of this solution.
[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this utility model provides a drill rod straightening and limiting device, including a drill rod limiting mechanism 10 and a drill rod straightening mechanism 20. The drill rod limiting mechanism 10 is disposed above the drill rod straightening mechanism 20. The drill rod limiting mechanism 10 includes a limiting plate 11 and a limiting cylinder 12. The limiting plate 11 can be rotated to below the drill rod 100 by the limiting cylinder 12 to limit the drill rod 100 from sliding and falling. The drill rod straightening mechanism 20 includes two oppositely arranged straightening handles 21, which can be opened and closed by the straightening cylinder 22 to clamp or release the drill rod 100 for straightening and centering operations.
[0033] like Figure 5 As shown, in the drill pipe limiting mechanism 10, the cylinder body of the limiting cylinder 12 is fixed on the limiting frame 13. The limiting frame 13 is fixed on the drill mast of the drilling rig via a crossbeam 14. The limiting frame 13 is also provided with a limiting pressure beam 15. The limiting plate 11 is horizontally arranged below the limiting pressure beam 15 and is connected to the limiting pressure beam 15 via a vertical plate 16. The limiting pressure beam 15 has a pressure beam roller 17 on its side facing the drill pipe. The pressure beam roller 17 is used to press the drill pipe. The rotation axis of the pressure beam roller 17 is perpendicular to the axis of the drill pipe, which can reduce the friction between the pressure beam roller 17 and the drill pipe 100. The rear end of the limiting pressure beam 15 extends rearward to form a first connecting plate. The first connecting plate is hinged to the piston rod end of the limiting cylinder 12 via a first rotating shaft 18. The limiting pressure beam 15 has a second connecting plate on its side facing the drill pipe 100. The second connecting plate is rotatably connected to the limiting frame 13 via a second rotating shaft 19.
[0034] The extension and retraction of the limit cylinder 12 causes the limit pressure beam 15 to rotate around the first rotating shaft 18, synchronously causing the limit plate 11 to rotate, thus closing or opening the limit plate 11. When the limit plate 11 is closed, it is located directly below the drill rod 100 to prevent the drill rod 100 from sliding and falling. When the limit plate 11 is open, it moves away from below the drill rod 100, without affecting the lifting and lowering operation of the power head on the drill rod 100.
[0035] Therefore, in this application, when the power head lifts the drill rod and moves it to the bottom of the drill rod and completely separates it from the cylindrical structure, the limiting plate can be positioned below the drill rod 100 by the drill rod limiting mechanism, thus preventing the drill rod 100 from slipping and falling, and improving safety.
[0036] like Figure 6 As shown, the two sets of centralizer handles 21 are driven to open and close by two sets of linkage mechanisms 23 via centralizer cylinders 22. The cylinder body of the centralizer cylinder 22 is fixed to the rear end of the centralizer frame 24, and the two sets of linkage mechanisms 23 are symmetrically arranged along the centerline of the centralizer frame 24.
[0037] The linkage mechanism 23 includes a front linkage 231 and a rear linkage 232, which are installed inside the stabilizer frame 24. One end of the front linkage 231 and the rear linkage 232 are hinged together. The stabilizer handle 21 is fixed to the front end of the front linkage 231, and the rear end of the rear linkage 232 is hinged to the piston rod of the stabilizer cylinder 22.
[0038] A V-shaped frame assembly 30 is provided on the top surface of the stabilizer frame 24. The V-shaped frame assembly 30 includes a V-shaped frame 31, which is fixed to a slide plate 33. The slide plate 33 has an elongated hole 34 along the longitudinal direction of the stabilizer frame 24. Bolts 35 pass through the elongated hole 34 to fix the V-shaped frame 31 to the top surface of the stabilizer frame 24. The rear end of the V-shaped frame 31 has an upwardly bent plate 36, which is fixedly connected to the stabilizer frame 24 by adjusting bolts 37. By loosening the bolts 35, the V-shaped frame 31 can be moved back and forth by adjusting the bolts 37 and then fixed again by bolts 35, so that the V-shaped frame 31 can be adapted to various drill rods 100 with different diameters.
[0039] A front roller is rotatably mounted on the handle 21 of the centralizer, and rear rollers 32 are rotatably mounted on the two sides of the V-shaped frame 31 facing the drill rod 100, respectively. The rotation axes of the front rollers and rear rollers 32 are perpendicular to the axis of the drill rod 100. Therefore, when the drill rod 100 moves up and down, the front rollers and rear rollers 32 can rotate under the action of the friction of the drill rod 100, reducing the friction between the drill rod 100 and the front and rear rollers 32, and extending their service life.
[0040] In this utility model, the front roller and the rear roller 32 are made of nylon plastic, which can avoid damaging the surface of the drill rod 100. At the same time, both the front roller and the rear roller 32 adopt a detachable structure, which can be easily replaced after damage as vulnerable parts.
[0041] Based on the above description of specific embodiments, the drill pipe straightening and limiting device provided by this utility model has the following advantages compared with the prior art:
[0042] First, a drill rod limiting mechanism is provided above the drill rod straightening mechanism. When the power head lifts the drill rod and moves it to the bottom of the drill rod, completely separating it from the cylindrical structure, the limiting plate can be positioned below the drill rod through the drill rod limiting mechanism to prevent the drill rod from slipping and falling, thus improving safety.
[0043] Secondly, the drill pipe straightening mechanism includes two oppositely arranged straightening handles, which can be opened and closed by the straightening cylinder to clamp or release the drill pipe for straightening and centering operations. It is convenient to use and highly reliable.
[0044] Third, the stabilizer handle is equipped with a front roller that rotates, and the V-shaped frame is equipped with rear rollers that rotate on both sides facing the drill rod. The rotation axes of the front and rear rollers are perpendicular to the axis of the drill rod. When the drill rod moves up and down, the front and rear rollers can rotate under the action of the drill rod friction, which reduces the friction of the drill rod and extends its service life.
[0045] Finally, it should be noted that the terms "comprising," "including," or any other variations thereof as used herein 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 limitation, an element defined by the phrase "comprising a…" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0046] This utility model is not limited to the above-described preferred embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.
Claims
1. A drill pipe centralizing and spacing device, characterized by, The utility model relates to a drilling rig, including: A drill rod limiting mechanism, including a limiting plate and a limiting oil cylinder, the limiting plate can be rotated to the lower side of the drill rod through the limiting oil cylinder; A drill rod centralizing mechanism, arranged below the drill rod limiting mechanism, including two oppositely arranged centralizer handrails, the two centralizer handrails can be opened and closed through a centralizing oil cylinder to clamp or release the drill rod.
2. The drill pipe centralizing and spacing device of claim 1, wherein, The cylinder body of the limiting oil cylinder is fixed on a limiting frame body, the limiting frame body is fixed on the derrick of the drilling rig through a crossbeam, a limiting pressure beam is further arranged on the limiting frame body, the limiting plate is horizontally arranged below the limiting pressure beam and connected with the limiting pressure beam through a vertical plate, the pressure beam roller is arranged on the side of the limiting pressure beam facing the drill rod, the rotation axis of the pressure beam roller is arranged perpendicularly to the axis of the drill rod, the rear end of the limiting pressure beam extends rearward to form a first connecting plate, the first connecting plate is hingedly connected with the piston rod end of the limiting oil cylinder through a first rotating shaft, a second connecting plate is arranged on the side of the limiting pressure beam facing the drill rod, and the second connecting plate is rotationally connected with the limiting frame body through a second rotating shaft.
3. The drill pipe centralizer and spacer device of claim 1, wherein, The two groups of centralizer handrails are driven to open and close by two groups of connecting rod mechanisms driven by the centralizing oil cylinder, the cylinder body of the centralizing oil cylinder is fixed on the rear end of a centralizer frame body, and the two groups of connecting rod mechanisms are symmetrically arranged along the center line of the centralizer frame body.
4. The device according to claim 3, characterized in that The connecting rod mechanism is arranged in the centralizer frame body, including a front connecting rod and a rear connecting rod, the front connecting rod is hingedly connected with one end of the rear connecting rod, the centralizer handrail is fixed on the front end of the front connecting rod, and the rear end of the rear connecting rod is hingedly connected with the piston rod of the centralizing oil cylinder.
5. The device according to claim 3, wherein A V-shaped frame assembly is arranged on the top surface of the centralizer frame body, the V-shaped frame assembly includes a V-shaped frame, the V-shaped frame is fixed on a sliding plate, a long hole is arranged on the sliding plate along the longitudinal direction of the centralizer frame body, a bolt passes through the long hole to fix the V-shaped frame on the top surface of the centralizer frame body, the rear end of the V-shaped frame is provided with an upwardly bent bent plate, the bent plate is fixedly connected with the centralizer frame body through an adjusting bolt, a front roller is rotationally arranged on the centralizer handrail, rear rollers are rotationally arranged on the two sides of the V-shaped frame facing the drill rod, and the rotation axes of the front roller and the rear rollers are arranged perpendicularly to the axis of the drill rod.
6. The drill pipe centralizer and spacer device of claim 5, wherein, The materials of the front roller and the rear roller are nylon plastic.
Citation Information
Patent Citations
Automatic rod changing device of drilling rig and drilling rig
CN113236155B