Modularized high-adaptation flexible floating thin-wall drill rod positioning and centering device
The modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device alleviates the rigid impact during drill pipe connection, realizes self-centering and modular adaptation of the drill pipe, solves the problem of easy damage to drill pipe connections, and improves the flexibility and rapid response capability of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-03-17
AI Technical Summary
Existing drill pipe connection methods are prone to damage under axial rigid impact, and it is difficult to modularize them to adapt to different drill pipe diameters and achieve rapid and accurate alignment.
The modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device includes components such as a floating flange, pressure plate, upper protective shell, floating disc, groove, sleeve base, reset disc, compression spring, steel balls, fastening bolts, and hinge bolts. It mitigates rigid impact through flexible floating and self-centering mechanisms, enabling rapid connection and modular adaptation.
It effectively avoids damage to thin-walled drill pipes due to rigid impact, improves the self-alignment tolerance and modular adaptability of drill pipe connections, simplifies the drill pipe loading and unloading process, and enhances the flexibility and rapid response capability of the device.
Smart Images
Figure CN224002677U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a drill pipe connection structure component, specifically a flexible floating device for mitigating rigid impact. Background Technology
[0002] In drill pipe splicing operations, traditional drill pipe connections are mostly rigid, which exposes numerous problems. Due to the thin wall thickness of thin-walled drill pipes, their overall structural strength and rigidity are relatively weak. They are prone to deformation under significant axial pressure. Rigid connections prevent the drill pipe from flexibly adapting to these impact changes, easily leading to localized stress concentration and ultimately drill pipe failure. This not only increases operating costs but also severely impacts construction progress. This invention provides a flexible floating drill pipe splicing device that can mitigate axial rigid impact, achieve modular adaptation to different drill pipe diameters, and meet the requirements for rapid and precise alignment. Summary of the Invention
[0003] Technical issues
[0004] This invention aims to solve the problem of existing drill pipe connection methods being easily damaged under axial rigid impact, and to meet the requirements of modular adaptability to different drill pipe diameters and rapid and accurate alignment, by providing a flexible floating drill pipe connection device that can mitigate changes in rigid impact.
[0005] Technical solution
[0006] This modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device includes a floating flange, a pressure plate, an upper protective shell, a floating disc, a groove, a sleeve base, a reset disc, a compression spring, steel balls, fastening bolts, hinge bolts, and a lower protective shell. The floating flange is connected to the reset disc via the center holes of the upper and lower protective shells using fastening bolts. The pressure plate is installed in the upper protective shell. Steel balls are filled into the groove, which is installed inside the pressure plate groove. The pressure plate is installed in the lower protective shell. One end of the compression spring contacts the pressure plate, and the other end contacts the floating disc. The floating disc is installed in contact with the floating flange and rests on the steel balls. The sleeve base is connected to the upper and lower protective shells using fastening bolts, and the upper and lower protective shells are connected using hinge bolts. This invention aims to achieve self-centering, modular adaptation to different drill pipe diameters, impact flexibility compensation, and rapid displacement connection of drill pipes. Multiple sets of floating discs and compression springs are evenly distributed circumferentially, and the opposite surface of the pressure plate has a square concave surface that mates with the groove.
[0007] Furthermore, the upper and lower protective shells have mirror-image corresponding floating flanges, pressure plates, floating discs, tanks, sleeve bases, reset discs, compression springs, steel balls, fastening bolts, and hinge bolts. Furthermore, the floating flange is connected to the reset disc, and a sleeve base is provided on the outside for dust protection.
[0008] Furthermore, the floating flange and the floating disk are connected in a frustum shape.
[0009] Furthermore, the steel balls reduce friction as the floating disc moves.
[0010] Furthermore, the upper and lower protective shells are connected by hinge bolts, and the rotation and opening facilitates the placement and removal of the drill pipe.
[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0012] This invention transforms rigid impact into flexible floating, avoiding damage to thin-walled drill pipes due to rigid impact. During drill pipe connection, the rotating opening and closing mechanism greatly facilitates drill pipe handling. The floating disc improves self-centering tolerance. The interchangeable compression spring and floating disc enable modular connection of drill pipes of different diameters, enhancing the adaptability of the device. The small contact area between the floating disc and the steel balls results in low friction, leading to a faster response and rapid displacement in the face of rigid impacts. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] Figure 1 , 2 This is a schematic diagram of the overall structure of the modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device of this utility model;
[0015] Figure 3 This is the overall assembly drawing of the modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device of this utility model;
[0016] Figure 4 This is a structural diagram of the connecting section of the modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device of this utility model.
[0017] Explanation of reference numerals in the attached drawings: floating flange (1), pressure plate (2), upper protective shell (3), floating disc (4), groove (5), sleeve base (6), reset disc (7), compression spring (8), steel ball (9), fastening bolt (10), hinge bolt (11), lower protective shell (12). Detailed Implementation
[0018] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.
[0019] Example 1 Installation Process
[0020] This modular, highly adaptable, flexible floating thin-walled drill pipe positioning and centering device includes a floating flange, pressure plate, upper protective shell, floating disc, groove, sleeve base, reset disc, compression spring, steel balls, fastening bolts, hinge bolts, and lower protective shell. The steel balls are placed into the groove, then into the pressure plate groove. The pressure plate is then placed into the upper (lower) protective shell, and a compression spring is placed between the pressure plate and the floating disc. The floating flange is then placed through the upper (lower) protective shell and in close contact with the floating disc. It is then connected to the reset disc with fastening bolts. The sleeve base is connected to the upper (lower) protective shell via fastening bolts, and finally, the upper (lower) protective shell is connected with hinge bolts. Throughout the process, after applying force, the floating flange, floating disc, and compression spring can perform normal compression and reset movements.
[0021] Example 2 Core Structure
[0022] Main framework
[0023] The upper and lower protective shells are connected by hinged bolts and can be rotated open and closed to enable quick loading and unloading of drill rods; the sleeve base is rigidly connected to the upper and lower protective shells by fastening bolts to form a closed dustproof structure.
[0024] Floating centering system
[0025] The floating flange is fastened to the reset plate by bolts through the center holes of the upper and lower protective shells, forming an axial reference; the floating plate and the floating flange are connected by a truncated pyramidal contact surface to achieve radial self-alignment; multiple sets of compression springs are evenly distributed in a circle, with one end of each spring connected to a pressure plate and the other end pushing the floating plate to provide flexible compensation.
[0026] Low-friction transmission components
[0027] The pressure plate is installed inside the upper and lower protective shells, and its opposite surfaces are provided with square concave surfaces; the groove is embedded in the concave surface of the pressure plate and filled with steel balls. The floating plate is placed on the steel balls to reduce motion friction; the reset plate is connected to the floating flange and a sleeve base is provided on the outside to prevent dust from entering.
[0028] Example 3 Functional Characteristics
[0029] Modular adaptation: By adjusting the spring preload and the contact surface of the truncated pyramid, it can adapt to drill pipes of different diameters; Impact compensation: The spring assembly absorbs axial impact, and the truncated pyramid structure buffers radial vibration; Quick maintenance: The hinge bolts support the opening and closing of the protective shell, reducing the time required to replace the drill pipe; Self-alignment accuracy: The steel ball guide rail and the truncated pyramid cooperate to reduce alignment error.
[0030] Example 4 Optimization Design
[0031] The internal structure of the protective shell features a mirror-symmetrical layout of floating flanges, pressure plates, and other components to ensure balanced stress distribution.
[0032] Example 5 Working Process
[0033] During drill pipe connection operations, this structure comes into play when rigid impacts occur during the connection of thin-walled drill pipes. Axial rigid impacts are generated during drill pipe connection, and the floating flange transmits the impact to the floating disc. The impact is then flexibly absorbed by the compression springs in contact with the floating disc. Throughout the process, the rigid impact is converted into a real-time response through the adjustment mechanism. After the drill pipe connection is complete, the modular, highly adaptable, flexible floating thin-walled drill pipe positioning and alignment device, with the springs under compression, automatically returns the mechanism to its initial state to cope with subsequent rigid impacts.
[0034] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A modular high-adaptable flexible floating thin wall drill pipe positioning and centering device, characterized in that, The utility model relates to a floating flange (1), pressing plate (2), upper protective shell (3), floating disc (4), groove body (5), sleeve base (6), reset disc (7), compression spring (8), steel ball (9), fastening bolt (10), hinged bolt (11), lower protective shell (12), the floating flange (1) is connected with reset disc (7) through the fastening bolt (10) through the upper protective shell (3) and lower protective shell (12) center hole, the pressing plate (2) is installed in upper protective shell (3), the steel ball (9) fills in groove body (5), groove body (5) is installed in the groove of pressing plate (2), the pressing plate (2) is installed in lower protective shell (12), one end of compression spring (8) contacts the pressing plate (2) one end and contacts floating disc (4), floating disc (4) is installed with floating flange (1) contact and is placed on steel ball (9), sleeve base (6) is connected with upper protective shell (3) through fastening bolt (10), sleeve base (6) is connected with lower protective shell (12) through fastening bolt (10), upper protective shell (3) and lower protective shell (12) are connected through hinged bolt (11).
2. Modular high compliant flexible float collar centralizer as claimed in claim 1, wherein: Floating disc (4) and compression spring (8) one to one corresponding and circularly distributed with multiple groups, the opposite side of pressing plate (2) is provided with the square concave surface that cooperates with groove body (5).
3. Modular high compliant flexible float collar centralizer as claimed in claim 1, wherein: The upper protective shell (3) and the lower protective shell (12) inside mirror image corresponding floating flange (1), pressing plate (2), floating disc (4), groove body (5), sleeve base (6), reset disc (7), compression spring (8), steel ball (9), fastening bolt (10), hinged bolt (11).
4. Modular high compliant flexible float collar centralizer as claimed in claim 1, wherein: Floating flange (1) is connected with reset disc (7), and the sleeve base (6) is arranged on the outer side to prevent dust.
5. Modular high compliant flexible float collar centralizer as claimed in claim 1, wherein: Floating flange (1) and floating disc (4) are connected in the shape of a regular prism.
6. Modular high compliant flexible float collar centralizer as defined in claim 1, characterized in that: The steel ball (9) reduces friction when the floating disc (4) moves, and is connected to quickly displace.
7. Modular high compliant flexible float collar centralizer as defined in claim 1, characterized in that: The upper protective shell (3) and the lower protective shell (12) are connected through the hinged bolt (11), and the rotary opening and closing is convenient for the taking and placing of drill rods.