A hole-opening mechanism for large-diameter thin-walled pipes

Abstract

This utility model discloses a large-diameter thin-walled pipe drilling mechanism, including a frame, a drive unit, a drill bit, and a support assembly located on one side of the frame. The support assembly includes a bidirectional lead screw connected to the output end of the drive unit. A pair of connecting seats are threaded onto the bidirectional lead screw. Several support plates are movably mounted on the periphery of the connecting seats. An expansion plate is detachably mounted on the top of the support plate via a pair of screws to expand the expansion diameter of the support assembly. This utility model achieves flexible expansion of the support range by using a bidirectional lead screw in conjunction with connecting rods to drive the expansion of the support plates of the basic structure, and by superimposing a dual adjustment mechanism of screws to adjust the height of the expansion plates. By simply disassembling and adjusting the distance between the expansion plates and the support plates, it can quickly adapt to large-span pipe diameter changes, enabling the support structure to cover a wider range of pipe specifications and significantly improving the equipment's versatility.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing equipment, specifically a hole-opening mechanism for large-diameter thin-walled pipes. Background Technology

[0002] In the processing and application of large-diameter thin-walled pipes, such as in the petrochemical, municipal water supply, and building ventilation industries, pipe drilling is a common processing procedure.

[0003] Conventional pipe support structures rely on pneumatic actuators or fixed-length adjustable components, and their support range is strictly constrained by hardware dimensions, only adapting to pipes within a specific diameter range. When the pipe diameter exceeds this range, they cannot provide effective support, resulting in low equipment versatility. Utility Model Content

[0004] The purpose of this utility model is to provide a hole-opening mechanism for large-diameter thin-walled pipes, so as to solve the problem of the limitations of the support structure of the existing hole-opening mechanism mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter thin-walled pipe drilling mechanism, comprising a frame, a drive device, a drill bit, and a support assembly disposed on one side of the frame. The support assembly includes a bidirectional lead screw connected to the output end of the drive device. A pair of connecting seats are threaded onto the bidirectional lead screw. Several support plates are movably mounted on the periphery of the connecting seats. An expansion plate is detachably mounted on the top of the support plate via a pair of screws to expand the expansion diameter of the support assembly.

[0006] Preferably, a pair of connecting rods are rotatably mounted on the bottom of the support plate, and the other end of the connecting rods extends to be rotatably connected to the connecting seat.

[0007] Preferably, the top of the support sheet has several through holes.

[0008] Preferably, a plurality of positioning sleeves for accommodating the screw are fixedly installed on the top of the support plate.

[0009] Preferably, the support piece and the expansion piece are each provided with a plurality of hollow cavities.

[0010] Preferably, the corners of the support piece and the expansion piece are rounded for a smooth transition.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention utilizes a dual adjustment mechanism—a bidirectional lead screw and connecting rod—to drive the expansion of the base structure support plates, coupled with a screw to adjust the height of the expansion plates. This enables flexible expansion of the support range. By simply disassembling and adjusting the distance between the expansion plates and the support plates, it can quickly adapt to large-span pipe diameter variations, allowing the support structure to cover a wider range of pipe specifications and significantly improving the equipment's versatility. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the support component of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the assembly of the support piece and the expansion piece of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the support component of this utility model without the expansion plate installed.

[0017] In the diagram: 1. Frame; 2. Drive unit; 3. Drill bit; 4. Support plate; 5. Expansion plate; 6. Two-way lead screw; 7. Screw; 8. Connecting rod; 9. Connecting seat; 10. Through hole; 11. Positioning sleeve. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 This utility model provides a technical solution: a large-diameter thin-walled pipe drilling mechanism, including a frame 1, a drive device 2, a drill bit 3, and a support assembly located on one side of the frame 1. The frame 1 serves as the basic support structure of the entire drilling mechanism, providing an installation platform for the drive device 2, the drill bit 3, and other components such as the support assembly. The drive device 2 is a motor located on one side of the frame 1. The drill bit 3 is located above the support assembly and is equipped with a mounting seat that can slide along a specific track (this is prior art, and the principle is not described here). This allows for precise control of the position of the drill bit 3 in the horizontal or vertical direction, meeting the drilling requirements of different heights and horizontal positions of the pipe.

[0020] Please see Figures 1-4The support assembly includes a bidirectional lead screw 6 connected to the output end of the drive device 2. A pair of connecting seats 9 are threaded onto the bidirectional lead screw 6. Several support plates 4 are movably mounted on the periphery of the connecting seats 9. Several through holes 10 are provided on the top of the support plates 4, effectively reducing the weight of the support plates 4 and making the equipment more flexible in operation. In addition, some debris is generated when the pipe is drilled. The through holes 10 provide a discharge channel for the debris, preventing the debris from accumulating on the support plates 4 and avoiding the debris from scratching the surface of the pipe or affecting the support effect. A pair of connecting rods 8 are rotatably mounted on the bottom of the support plates 4. The other end of the connecting rods 8 extends to be rotatably connected to the connecting seats 9. The bidirectional lead screw 6 can be rotated forward or reversed by the drive device 2 to precisely control the position of the connecting seats 9 on the bidirectional lead screw 6. The connecting seats 9, together with the connecting rods 8, realize the expansion and contraction of the support plates 4, thereby maintaining stable support for the pipe during the drilling process and reducing the shaking and deformation of the pipe. Above the support plate 4, expansion plates 5 are detachably mounted via a pair of screws 7. Several positioning sleeves 11 are fixedly installed on the top of the support plate 4 to accommodate the screws 7, thereby increasing the expansion diameter of the support assembly. Both the support plate 4 and the expansion plates 5 have multiple hollow cavities, which effectively reduces material usage without compromising structural strength, thus reducing their weight and making the entire opening mechanism lighter. The corners of the support plate 4 and the expansion plates 5 are rounded for a smooth transition. This rounded corner design prevents the sharp edges of the support plate 4 and the expansion plates 5 from directly contacting the pipe surface, reducing damage to the pipe surface.

[0021] When drilling a hole in the pipe, the drive device 2 first drives a pair of connecting seats 9 to move closer to each other on the double-ended lead screw 6. The connecting seats 9, in conjunction with the connecting rod 8, drive several support plates 4 to contract radially along the double-ended lead screw 6. Then, the pipe to be drilled is placed on the support assembly. Subsequently, the pair of connecting seats 9 are driven to move away from each other on the double-ended lead screw 6, causing several support plates 4 to expand radially along the double-ended lead screw 6 until the outer surface of the support plates 4 contacts the inner wall of the pipe, providing uniform support force to the pipe. When the expansion plates 4 are in contact with the inner wall of the pipe, they apply radial support force to the pipe. This support force can balance various external forces on the pipe during the drilling process, such as the cutting force of the drill bit 3 and the weight of the pipe itself, preventing the pipe from deforming, shaking, or partially collapsing due to stress.

[0022] This application utilizes a dual adjustment mechanism—a bidirectional lead screw 6 in conjunction with a connecting rod 8 to drive the expansion of the foundation support plate 4, and a screw 7 to adjust the height of the expansion plate 5—to achieve flexible expansion of the support range. By simply disassembling and adjusting the distance between the expansion plate 5 and the support plate 4, it can quickly adapt to large-span pipe diameter changes, enabling the support structure to cover a wider range of pipe specifications and significantly improving equipment versatility.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0024] 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 hole-opening mechanism for large-diameter thin-walled pipes, characterized in that: The device includes a frame (1), a drive unit (2), a drill bit (3), and a support assembly located on one side of the frame (1). The support assembly includes a bidirectional lead screw (6) connected to the output end of the drive unit (2). A pair of connecting seats (9) are threaded onto the bidirectional lead screw (6). Several support plates (4) are movably installed on the periphery of the connecting seats (9). An expansion plate (5) is detachably installed above the support plate (4) via a pair of screws (7) to expand the expansion diameter of the support assembly.

2. The hole-opening mechanism for large-diameter thin-walled pipes according to claim 1, characterized in that: A pair of connecting rods (8) are rotatably mounted on the bottom of the support plate (4), and the other end of the connecting rods (8) extends to be rotatably connected to the connecting seat (9).

3. The hole-opening mechanism for large-diameter thin-walled pipes according to claim 2, characterized in that: The top of the support plate (4) is provided with several through holes (10).

4. The hole-opening mechanism for large-diameter thin-walled pipes according to claim 3, characterized in that: The top of the support plate (4) is fixedly equipped with several positioning sleeves (11) for accommodating the screw (7).

5. The hole-opening mechanism for large-diameter thin-walled pipes according to claim 4, characterized in that: The support plate (4) and the expansion plate (5) are respectively provided with multiple hollow cavities.

6. The hole-opening mechanism for large-diameter thin-walled pipes according to claim 5, characterized in that: The corners of the support piece (4) and the expansion piece (5) are rounded for a smooth transition.

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