Large pipeline boring equipment

By using a boring device that eliminates the need for welding fixation and stable support, the problems of time-consuming welding and damage in the boring of large pipes have been solved, achieving efficient and safe pipe processing.

CN223572038UActive Publication Date: 2025-11-21ANQIU WEIFANG AOLING CRYSTALLIZER CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202423251451.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-11-21
Estimated Expiration
2034-12-27

AI Technical Summary

Technical Problem

In existing large-diameter pipe boring technology, welding the fixing structure is time-consuming and can easily damage the pipe, affecting accuracy and integrity.

Method used

By employing a moving mechanism, clamping components, and support components, and using a boring device driven by a hydraulic cylinder and a motor, weld-free fixing and stable support of the pipeline are achieved. Combined with the design of threaded rods and limit wheels, the stability and flexibility of the pipeline during the boring process are ensured.

Benefits of technology

It improves the flexibility and efficiency of boring processes, prevents welding damage to pipes, and ensures machining accuracy and safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223572038U_ABST
    Figure CN223572038U_ABST
Patent Text Reader

Abstract

The utility model discloses large pipeline boring equipment, and particularly relates to the technical field of pipeline boring, the large pipeline boring equipment comprises a moving mechanism, the left part of the upper end of the moving mechanism is slidably connected with a supporting seat, the middle part of the upper side of the right end of the supporting seat is fixedly connected with a mounting column, and the outer surface of the mounting column is provided with a boring device; a supporting assembly is jointly arranged in the middles of the front end and the rear end of the moving mechanism, a moving seat is slidably connected to the right portion of the upper end of the moving mechanism, a placing cylinder is rotatably connected to the inner surface of the moving seat, and clamping assemblies are symmetrically arranged on the upper portion and the lower portion of the left side of the inner surface of the placing cylinder. A rotating assembly is arranged in the middle of the right side of the upper end of the horizontal part of the moving seat. According to the large pipeline boring equipment, the boring device is arranged, and the position of a cutter for pipeline boring in a pipeline can be adjusted, so that the flexibility of boring machining can be improved, the boring cutting path can be optimized, and the boring cutting efficiency can be improved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline boring technology field, especially a large -scale pipeline boring equipment. BACKGROUND

[0002] The boring technology of large pipeline is an indispensable key technology in the pipeline manufacturing, maintenance and specific industrial application field, and is often needed to process large diameter pipeline or hole in the manufacturing field of large equipment, machinery, ship, bridge etc.

[0003] The boring technology can accurately control the aperture size, shape and position precision, ensure that the processed pipeline meets the design requirements, and is suitable for pipeline processing of various materials and shapes, and can meet the needs of different fields and different application scenarios.

[0004] The existing large pipeline boring technology needs to weld positioning frame and other structures for fixing the pipeline on the pipeline before boring, but the process of welding the fixing structure on the pipeline and taking the fixing structure from the pipeline after completing boring is time-consuming, and the welding method is easy to cause damage to the pipeline under improper operation, thereby affecting the integrity and precision of the pipeline. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a large pipeline boring equipment, which can effectively solve the problem of time-consuming in the process of welding the fixing structure for fixing the pipeline on the pipeline during the boring of the large pipeline.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A large pipeline boring equipment, including mobile mechanism, the left part of the upper end of mobile mechanism is connected with support seat through sliding, the right end of support seat upper side middle part is fixedly connected with installation column, the outer surface of installation column is provided with boring device, the front and rear ends of mobile mechanism middle part are provided with support assembly, the right part of the upper end of mobile mechanism is connected with mobile seat through sliding, the inner surface of mobile seat is rotatably connected with the placement cylinder, the left side of the inner surface of placement cylinder upper and lower parts is symmetrically provided with clamping assembly, the right side middle part of the horizontal part of mobile seat upper end is provided with rotating assembly.

[0008] Preferably, the boring device includes two fixed blocks, the two fixed blocks are fixedly connected with the left and right parts of the upper side of the outer surface of the mounting column respectively, the inner surfaces of the two fixed blocks are commonly rotationally connected with a threaded rod one, the left rear part of the outer surface of the mounting column is fixedly connected with a motor one, the output end of the motor one is fixedly connected with a round rod through a shaft coupling, the outer surface of the round rod and the outer surface of the threaded rod one are commonly fixedly connected with a belt pulley group, the outer surface of the threaded rod one is threadedly connected with a moving circular ring, the moving circular ring is slidably connected with the front and rear sides of the middle part of the outer surface of the mounting column.

[0009] Preferably, the rotating assembly includes a driven gear ring, the driven gear ring is fixedly connected with the right side of the outer surface of the placing cylinder, the right side middle part of the upper end of the horizontal part of the moving seat is fixedly connected with a motor two, the output end of the motor two is fixedly connected with a rotating rod through a shaft coupling, the outer surface of the rotating rod is fixedly connected with a driving gear, and the driving gear is engaged with the driven gear ring.

[0010] Preferably, the clamping assembly includes a rectangular shell one, the rectangular shell one is fixedly connected with the left side upper part of the outer surface of the moving seat and penetrates through, the upper side of the inner surface of the rectangular shell one is fixedly connected with a hydraulic cylinder, and the lower end of the output end piston rod of the hydraulic cylinder is fixedly connected with an arc-shaped clamping plate.

[0011] Preferably, the inner surface of the arc-shaped clamping plate is fixedly connected with a plurality of anti-skid strips, and the plurality of anti-skid strips are arranged in an arc-shaped array.

[0012] Preferably, the supporting assembly includes a limiting circular ring, the limiting circular ring is fixedly connected with the middle parts of the front and rear ends of the moving mechanism, and the inner surface of the limiting circular ring is arranged in an arc-shaped array and provided with three limiting assemblies.

[0013] Preferably, the limiting assembly includes a rectangular shell two, the rectangular shell two is fixedly connected with the upper side middle part of the outer surface of the limiting circular ring and penetrates through, a threaded rod two is threadedly connected with the rectangular shell two and extends into the rectangular shell two through the penetrating part of the upper middle part of the rectangular shell two, the upper end of the threaded rod two is fixedly connected with a rotating handle, the lower end of the threaded rod two is rotationally connected with a sliding block, the sliding block is slidably connected with the inner surface of the rectangular shell two, the inner surface of the sliding block is commonly fixedly connected with a connecting rod, and the middle part of the outer surface of the connecting rod is rotationally connected with a limiting wheel.

[0014] Compared with the prior art, the boring device has the following beneficial effects:

[0015] 1. The boring device provided by the utility model can adjust the position of the cutting tool for boring the pipeline in the pipeline, thus improving the flexibility of boring processing, optimizing the boring cutting path and improving the boring cutting efficiency; the clamping assembly is provided, so that the pipeline can be fixed without welding the connecting piece for fixing the pipeline on the pipeline, thereby preventing the welding from damaging the integrity and precision of the pipeline; the support assembly is provided together with the placement cylinder to support the left and right sides of the pipeline respectively, so that the pipeline is more stable during rotation.

[0016] 2. The utility model discloses a plurality of anti -skid strips, increase the friction effect, so that two arc clamping plates are more stable to the clamping and fixing of the pipeline, and also have the effect of buffering, prevent two arc clamping plates from being too big to the clamping force of the pipeline, cause the pipeline to deform, the setting screw rod no. Two make three limit wheels and the pipeline outer surface can control the degree of abutment, so that the pipeline can keep stable under various working conditions, and by controlling the supporting force of the three limit wheels on the pipeline, the pipeline can be ensured to be stressed evenly and reasonably, thereby greatly reducing the risk of safety accidents. DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the boring assembly structure schematic view of the utility model;

[0019] Figure 3 It is the rotation assembly structure schematic view of the utility model;

[0020] Figure 4 It is the clamping assembly structure schematic view of the utility model;

[0021] Figure 5 It is the support assembly structure schematic view of the utility model;

[0022] Figure 6 It is the limit assembly structure section schematic view of the utility model.

[0023] In the drawing: 1, moving mechanism; 2, support seat; 3, installation column; 4, boring device; 41, motor one; 42, pulley set; 43, screw rod one; 44, moving ring; 45, fixed block; 46, round rod; 5, support assembly; 51, limit ring; 52, limit assembly; 521, rectangular shell two; 522, rotation handle; 523, screw rod two; 524, sliding block; 525, connecting rod; 526, limit wheel; 6, moving seat; 7, placement cylinder; 8, clamping assembly; 81, rectangular shell one; 82, hydraulic cylinder; 83, arc clamping plate; 84, anti -skid strip; 9, rotation assembly; 91, motor two; 92, rotation rod; 93, drive gear; 94, driven gear ring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0025] As shown in Figure 1 A large pipeline boring equipment, including mobile mechanism 1, the left part of mobile mechanism 1 upper end is slidably connected with support seat 2, the right end upper side middle part of support seat 2 is fixedly connected with mounting column 3, the outer surface of mounting column 3 is provided with boring device 4, the front and rear ends middle part of mobile mechanism 1 is commonly provided with support assembly 5, the right part of mobile mechanism 1 upper end is slidably connected with moving seat 6, the inner surface of moving seat 6 is rotatably connected with placing cylinder 7, the inner surface left side upper and lower part of placing cylinder 7 is symmetrically provided with clamping assembly 8, the right side middle part of the horizontal part upper end of moving seat 6 is provided with rotating assembly 9.

[0026] The above-mentioned mobile mechanism 1 is composed of a bearing structure (having sufficient strength and rigidity to withstand the weight and vibration of the boring equipment and its operation), a moving mechanism (including tracks, sliding rails, rollers, hydraulic cylinders or electric drives to easily move the boring equipment and the equipment for fixing the pipeline to different working positions when needed), a positioning and locking mechanism (to ensure stability during processing, the base is usually also equipped with positioning pins, locking bolts or other locking mechanisms to be firmly fixed in the working position when needed), which is a mature technical means in the prior art, and the structure and working principle thereof will not be described herein;

[0027] In specific implementation, with the help of large pipeline professional hoisting equipment, one side of the pipeline is placed in the placing cylinder 7, the two clamping assemblies 8 are turned on to clamp and fix the pipeline in the placing cylinder 7, the moving mechanism 1 is turned on to drive the moving seat 6 to move from right to left, thereby driving the pipeline to move from right to left until the other side of the pipeline enters the support assembly 5, so that the placing cylinder 7 supports the left and right sides of the pipeline together with the support assembly 5;

[0028] The cutting tool for pipeline boring is fixedly installed in the boring device 4, the moving mechanism 1 is turned on to drive the support seat 2 to move from left to right, thereby driving the mounting column 3 and the boring device 4 to move from left to right, so that the mounting column 3 is inserted into the pipeline, thereby driving the boring device 4 to enter the pipeline;

[0029] The position of the cutting tool for pipeline boring is adjusted to a suitable cutting position by turning on the boring device 4, the rotating assembly 9 is turned on to drive the placing cylinder 7 to rotate, thereby driving the pipeline to rotate, cooperating with the boring device 4, and starting the boring operation of the pipeline;

[0030] After the boring operation of the pipeline is completed, the rotating assembly 9 is closed, the moving mechanism 1 is opened to drive the support seat 2 to move from right to left, thereby driving the mounting column 3 and the boring device 4 to move from right to left, so that the mounting column 3 and the boring device 4 are both out of the pipeline;

[0031] The moving mechanism 1 is opened to drive the moving seat 6 to move from left to right, thereby driving the pipeline to move from left to right out of the support assembly 5, then after the professional hoisting equipment completes the hoisting and fixing of the pipeline, the two clamping assemblies 8 are opened, the pipeline is no longer clamped and fixed, the moving mechanism 1 is opened to drive the moving seat 6 to move from left to right, so that the pipeline is separated from the placing cylinder 7, and then the hoisting equipment hoists the pipeline to the pipeline storage position.

[0032] Specifically, in order to facilitate the staff to perform the boring process of the large pipeline, referring to Figure 2 , the boring device 4 comprises two fixed blocks 45, the two fixed blocks 45 are respectively fixedly connected with the left and right parts of the upper side of the outer surface of the mounting column 3, and the inner surfaces of the two fixed blocks 45 are commonly rotationally connected with a threaded rod one 43. The outer surface of the mounting column 3 is fixedly connected with a motor one 41 at the left rear part, the output end of the motor one 41 is fixedly connected with a round rod 46 through a shaft coupling, the outer surface of the round rod 46 and the outer surface of the threaded rod one 43 are commonly fixedly connected with a belt pulley set 42 at the left side, the threaded rod one 43 is threadedly connected with a moving circular ring 44, and the moving circular ring 44 is slidingly connected with the front and rear sides of the middle part of the outer surface of the mounting column 3.

[0033] Further referring to Figure 3 , the rotating assembly 9 comprises a driven gear ring 94, the driven gear ring 94 is fixedly connected with the right side of the outer surface of the placing cylinder 7, the moving seat 6 is fixedly connected with a motor two 91 at the right side of the upper end of the horizontal part, the output end of the motor two 91 is fixedly connected with a rotating rod 92 through a shaft coupling, the outer surface of the rotating rod 92 is fixedly connected with a driving gear 93, and the driving gear 93 is engaged with the driven gear ring 94.

[0034] Further referring to Figure 4 , the clamping assembly 8 comprises a rectangular shell one 81, the rectangular shell one 81 is fixedly connected with the left side of the outer surface of the moving seat 6 and penetrates through, the inner surface of the rectangular shell one 81 is fixedly connected with a hydraulic cylinder 82 at the upper side, and the lower end of the output end piston rod of the hydraulic cylinder 82 is fixedly connected with an arc-shaped clamping plate 83; the inner surface of the arc-shaped clamping plate 83 is fixedly connected with a plurality of anti-skid strips 84, and the plurality of anti-skid strips 84 are arranged in an arc shape.

[0035] Further referring to Figure 5 , the support assembly 5 comprises a limiting circular ring 51, the limiting circular ring 51 is fixedly connected with the middle part of the front and rear ends of the moving mechanism 1, and three limiting assemblies 52 are arranged in an arc shape on the inner surface of the limiting circular ring 51.

[0036] Further referring to Figure 6The limiting assembly 52 comprises a rectangular shell two 521, the rectangular shell two 521 is fixedly connected with the outer surface of the limiting ring 51 and penetrates through the upper middle part, the upper middle part of the rectangular shell two 521 is threaded with a threaded rod two 523, the threaded rod two 523 is fixedly connected with a rotating handle 522, the lower end of the threaded rod two 523 is rotatably connected with a sliding block 524, the sliding block 524 is slidably connected with the inner surface of the rectangular shell two 521, the inner surface of the sliding block 524 is fixedly connected with a connecting rod 525, and the outer surface of the connecting rod 525 is rotatably connected with a limiting wheel 526.

[0037] The mobile ring 44 is composed of a ring body and a fixing part for fixing and installing a cutting tool for boring the inner wall of the pipeline;

[0038] The three limiting wheels 526 are circumferential rotating wheels, which are mainly used for supporting the rotation of the pipeline in the circumferential direction, and can ensure that the pipeline rotates smoothly and uniformly during boring, thereby facilitating accurate boring of the tool.

[0039] The plurality of anti-skid strips 84 are rubber anti-skid strips;

[0040] In the specific implementation, with the help of large pipeline professional hoisting equipment, one side of the pipeline is placed in the placing cylinder 7, the two hydraulic cylinders 82 are opened and the piston rods are elongated, so as to drive the two arc-shaped clamping plates 83 to move close to each other until the pipeline in the placing cylinder 7 is clamped and fixed, so that the pipeline can be fixed without welding connecting parts for fixing the pipeline on the pipeline, thereby preventing the welding from damaging the integrity and precision of the pipeline;

[0041] The plurality of anti-skid strips 84 can increase the friction force, so that the clamping and fixing of the two arc-shaped clamping plates 83 on the pipeline is more stable, and at the same time, the plurality of anti-skid strips 84 can play a buffering role to prevent the clamping force of the two arc-shaped clamping plates 83 on the pipeline from being too large and causing deformation of the pipeline;

[0042] The moving mechanism 1 is opened to drive the moving seat 6 to move from right to left, thereby driving the pipeline to move from right to left until the other side of the pipeline passes through the limiting ring 51, the threaded rod two 523 is rotated by rotating the rotating handle 522, thereby driving the sliding block 524 to move up and down in the rectangular shell two 521, thereby driving the limiting wheel 526 to move up and down, so that the limiting wheel 526 abuts against the outer surface of the pipeline, and the above operation is repeated, so that the other two limiting wheels 526 abut against the outer surface of the pipeline;

[0043] The three limiting assemblies 52 support the pipeline without affecting the rotation of the pipeline, thereby supporting the left and right sides of the pipeline together with the placement cylinder 7, so that the pipeline is more stable during rotation;

[0044] Meanwhile, the design of the threaded rod two 523 can control the force of the three limiting wheels 526 abutting against the outer surface of the pipeline, so that the pipeline can maintain stability under various working conditions, and by controlling the supporting force of the three limiting wheels 526 on the pipeline, the pipeline can be uniformly and reasonably stressed, thereby greatly reducing the risk of safety accidents;

[0045] The pipeline boring cutting tool is fixedly installed on the moving ring 44, the support seat 2 is moved from left to right by opening the moving mechanism 1, so that the mounting column 3 and the boring device 4 are also moved from left to right, the mounting column 3 is inserted into the pipeline, and the boring device 4 is driven into the pipeline;

[0046] The circular rod 46 is rotated by opening the motor one 41, the threaded rod one 43 is rotated under the action of the belt pulley set 42, the moving ring 44 is moved left and right, the pipeline boring cutting tool fixedly installed on the moving ring 44 is moved left and right, so that the position of the pipeline boring cutting tool in the pipeline can be adjusted according to requirements, thereby improving the flexibility of boring machining, optimizing the boring cutting path, and improving the boring cutting efficiency;

[0047] The rotating rod 92 is rotated by opening the motor two 91, the driving gear 93 is rotated, the driven gear ring 94 is rotated, the placement cylinder 7 is rotated, the pipeline fixed in the placement cylinder 7 is rotated, and the pipeline boring cutting tool in the boring device 4 is cooperated to start the boring operation of the pipeline;

[0048] After the boring operation of the pipeline is completed, the motor two 91 is closed, the support seat 2 is moved from right to left by opening the moving mechanism 1, so that the mounting column 3 and the boring device 4 are also moved from right to left, and the mounting column 3 and the boring device 4 are out of the pipeline;

[0049] The moving seat 6 is moved from left to right by opening the moving mechanism 1, so that the pipeline is moved from left to right and out of the limiting ring 51, then the two hydraulic cylinders 82 are contracted to move the piston rod, so that the two arc-shaped clamping plates 83 move away from each other, the pipeline is no longer clamped and fixed, the moving seat 6 is moved from left to right by opening the moving mechanism 1, so that the pipeline is separated from the placement cylinder 7, and then the pipeline is hoisted to the pipeline storage position by the hoisting equipment.

[0050] It needs to be specially pointed out that the specific installation mode of the moving mechanism 1, the motor one 41, the two hydraulic cylinders 82 and the motor two 91 and the connection mode and control method of the circuit all belong to the conventional design, and the utility model will not be described in detail.

[0051] The working principle of the utility model is:

[0052] Put one side of the pipeline into the placing cylinder 7, open the two hydraulic cylinders 82 to extend the piston rod, so that the two arc-shaped clamping plates 83 are clamped and fixed to the pipeline;

[0053] Open the moving mechanism 1 to drive the pipeline to move from right to left until the other side of the pipeline passes through the limiting circular ring 51, rotate the three rotating handles 522 to drive the three threaded rods two 523 to rotate respectively, so that the three limiting wheels 526 are all in abutment with the outer surface of the pipeline;

[0054] Fix and install the pipeline boring cutting tool on the moving circular ring 44, open the moving mechanism 1 to drive the support seat 2 to move from left to right, thereby driving the mounting column 3 and the boring device 4 to move from left to right, so that the mounting column 3 is inserted into the pipeline, thereby driving the boring device 4 to enter into the pipeline;

[0055] Open the motor one 41 to drive the circular rod 46 to rotate, under the action of the belt pulley set 42, drive the threaded rod one 43 to rotate, thereby driving the moving circular ring 44 to move left and right, thereby driving the pipeline boring cutting tool to move left and right, adjust the position of the pipeline boring cutting tool to the appropriate cutting position;

[0056] Open the motor two 91 to drive the rotating rod 92 to rotate, thereby driving the driving gear 93 to rotate, thereby driving the driven gear ring 94 to rotate, thereby driving the placing cylinder 7 to rotate, thereby driving the pipeline fixed in the placing cylinder 7 to rotate, cooperate with the pipeline boring cutting tool in the boring device 4, start the boring operation of the pipeline.

[0057] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A large-scale pipe boring device, comprising a moving mechanism (1), characterized in that: The upper left side of the moving mechanism (1) is slidably connected to a support base (2), and the upper middle side of the right side of the support base (2) is fixedly connected to a mounting column (3). The outer surface of the mounting column (3) is provided with a boring device (4). The middle of the front and rear ends of the moving mechanism (1) is provided with a support component (5). The upper right side of the moving mechanism (1) is slidably connected to a moving seat (6). The inner surface of the moving seat (6) is rotatably connected to a placement cylinder (7). The upper and lower parts of the left side of the inner surface of the placement cylinder (7) are symmetrically provided with clamping components (8). The middle right side of the upper part of the horizontal part of the moving seat (6) is provided with a rotating component (9).

2. The large-scale pipe boring equipment according to claim 1, characterized in that: The boring device (4) includes two fixing blocks (45), which are fixedly connected to the upper left and right sides of the outer surface of the mounting column (3) respectively. The inner surfaces of the two fixing blocks (45) are rotatably connected to a threaded rod (43). A motor (41) is fixedly connected to the rear left side of the outer surface of the mounting column (3). A round rod (46) is fixedly connected to the output end of the motor (41) through a coupling. A pulley group (42) is fixedly connected to the outer surface of the round rod (46) and the left side of the outer surface of the threaded rod (43). A movable ring (44) is threadedly connected to the outer surface of the threaded rod (43). The movable ring (44) is slidably connected to the middle of the front and rear sides of the outer surface of the mounting column (3).

3. The large-scale pipe boring equipment according to claim 1, characterized in that: The rotating assembly (9) includes a driven gear ring (94), which is fixedly connected to the right side of the outer surface of the placement cylinder (7). A second motor (91) is fixedly connected to the middle of the upper right side of the horizontal part of the moving seat (6). A rotating rod (92) is fixedly connected to the output end of the second motor (91) through a coupling. A drive gear (93) is fixedly connected to the outer surface of the rotating rod (92), and the drive gear (93) meshes with the driven gear ring (94).

4. A large-scale pipe boring device according to claim 1, characterized in that: The clamping assembly (8) includes a rectangular outer shell (81), which is fixedly connected to and passes through the upper left side of the outer surface of the movable seat (6). A hydraulic cylinder (82) is fixedly connected to the upper side of the inner surface of the rectangular outer shell (81), and an arc-shaped clamping plate (83) is fixedly connected to the lower end of the piston rod at the output end of the hydraulic cylinder (82).

5. A large-scale pipe boring device according to claim 4, characterized in that: The inner surface of the arc-shaped clamp (83) is fixedly connected with a number of anti-slip strips (84), and the number of anti-slip strips (84) are distributed in an arc-shaped array.

6. A large-scale pipe boring device according to claim 1, characterized in that: The support component (5) includes a limiting ring (51), which is fixedly connected to the front and rear middle parts of the moving mechanism (1). Three limiting components (52) are arranged in an arc-shaped array on the inner surface of the limiting ring (51).

7. A large-scale pipe boring device according to claim 6, characterized in that: The limiting component (52) includes a rectangular outer shell (521), which is fixedly connected to and passes through the middle of the upper side of the outer surface of the limiting ring (51). The middle of the upper end of the rectangular outer shell (521) extends through and is threaded to the inner surface of the rectangular outer shell (521) and is threaded to a threaded rod (523). The upper end of the threaded rod (523) is fixedly connected to a rotating handle (522), and the lower end of the threaded rod (523) is rotatably connected to a slider (524). The slider (524) is slidably connected to the inner surface of the rectangular outer shell (521). The middle of the left and right sides of the inner surface of the slider (524) is fixedly connected to a connecting rod (525), and the middle of the outer surface of the connecting rod (525) is rotatably connected to a limiting wheel (526).