CN113333827A - Hook material device for under-pressure pipeline tapping construction - Google Patents
Hook material device for under-pressure pipeline tapping construction Download PDFInfo
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- CN113333827A CN113333827A CN202110717197.0A CN202110717197A CN113333827A CN 113333827 A CN113333827 A CN 113333827A CN 202110717197 A CN202110717197 A CN 202110717197A CN 113333827 A CN113333827 A CN 113333827A
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- drill
- material hook
- drill rod
- hook
- pipeline
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/04—Drills for trepanning
- B23B51/0426—Drills for trepanning with centering devices
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- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a material hooking device for tapping construction of a pipeline with pressure, which is arranged on a drill rod of a central drill, wherein the central drill and a cylindrical cutter are coaxially arranged; a swingable material hook is arranged on the drill rod at a position close to the drill bit; a material hook accommodating space is formed on the drill rod; when the drill bit passes through the pipe wall cutting part of the pressurized pipeline, the material hook is avoided in the material hook accommodating space; when the drill bit passes through the pipe wall cutting part of the pipeline with pressure, the material hook is in a horizontal state along with the self weight, and the working end of the material hook extends out of the outer circumference of the drill bit. Due to the structural design, when the drill bit passes through the pipe wall cutting part of the pressurized pipeline, the material hook is avoided in the material hook accommodating space; after the drill bit passes through the pipe wall cut-off part of the pipeline under pressure, the material hook is in a horizontal state along with self weight, the working end of the material hook extends out of the outer circumference of the drill bit and can hook the pipe wall cut-off part generated after cutting by the cylindrical cutter, the possibility that the pipe wall cut-off part falls into the pipeline is completely eradicated, potential safety hazards are eliminated, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of construction of pipelines under pressure, in particular to a hooking device for tapping construction of pipelines under pressure.
Background
With the continuous expansion of the urban scale, various pipelines such as gas pipelines and the like in the urban are laid below the ground, so that the urban environment is greatly improved. However, after the pipeline is laid below the ground, the difficulty of the pipeline maintenance operation is greatly increased.
In the prior art, if an underground pipeline with pressure needs to be perforated for various reasons (such as leakage) after being laid, particularly in a working state with pressure, the existing construction process is to position the underground pipeline with pressure through a central drill, and then a cylindrical cutter (coaxially arranged with the central drill) starts to cut the wall of the pipeline so as to separate a local part (namely a pipe wall cutting part) of the pipeline from the whole part, thereby realizing the perforation on the pipeline with pressure.
However, in practical applications, the tube wall cut produced by the cutting with the cylindrical cutter often falls into the pipeline. For pipelines buried deep in the ground, once the pipe wall cut-out falls into the pipeline, it is extremely difficult to salvage or pick up. Moreover, the pipe wall cut-off part left in the pipeline also has certain potential safety hazard on the subsequent operation of the pipeline.
Therefore, how to prevent the tube wall cut-off portion generated after the cutting by the cylindrical cutter from remaining in the pipeline becomes a technical problem which needs to be solved urgently by those skilled in the art.
The person skilled in the art is dedicated to solving the above technical drawbacks.
Disclosure of Invention
In view of the above defects in the prior art, the invention aims to solve the technical problem that after the tube wall is cut by the cylindrical cutter, the cut part of the tube wall can be picked up in time, so that the cut part of the tube wall is completely prevented from falling into a pipeline, the potential safety hazard is eliminated, and the construction efficiency is improved.
In order to achieve the purpose, the invention discloses a material hooking device for tapping construction of a pipeline with pressure, which is arranged on a drill rod of a central drill, wherein the central drill and a cylindrical cutter are coaxially arranged; the drill head of the center drill extends out of the cutting edge of the cylindrical cutter; a swingable material hook is arranged on the drill rod at a position close to the drill bit; a material hook accommodating space is formed in the drill rod; when the drill bit penetrates through the pipe wall cutting part of the pressurized pipeline, the material hook is avoided in the material hook accommodating space; when the drill bit passes through the pipe wall cutting part of the pipeline with pressure, the material hook is in a horizontal state along with self weight, and the working end of the material hook extends out of the outer circumference of the drill bit.
Preferably, the hook accommodating space is a groove on the drill rod.
Preferably, the outer diameter of the drill rod is smaller than the outer diameter of the drill bit; and a hook accommodating space is formed between the outer circumferential extension surface of the drill bit and the outer circumference of the drill rod.
Preferably, the material hook is arranged on the drill rod in a swinging mode through a pivot hole in the drill rod.
Preferably, the drill rod is provided with a material hook limiting part at the lower side of the pivot hole.
Preferably, the drill rod is symmetrically provided with two material hooks along the radial direction, and two material hook accommodating spaces are correspondingly and symmetrically formed in the drill rod.
Preferably, two groups of material hooks are axially arranged on the drill rod, and two groups of material hook accommodating spaces are correspondingly formed in the drill rod; the two groups of material hook accommodating spaces are arranged on the circumference of the drill rod in a staggered mode.
Preferably, the material hook is a strip-shaped object; one end of the material hook is a pin joint end matched with the pin joint hole, and the other end of the material hook is a working end.
Preferably, the two material hooks are of an integral U-shaped structure.
Preferably, the pivot hole is located on the axis of the drill rod.
The invention has the beneficial effects that:
due to the structural design, the drill rod at the tail part of the drill bit is provided with the material hook and the material hook accommodating space. When the drill bit passes through the pipe wall cutting part of the pressurized pipeline, the material hook is avoided in the material hook accommodating space; after the drill bit passes through the pipe wall cut-off part of the pipeline with pressure, the material hook is in a horizontal state along with self weight, the working end of the material hook extends out of the outer circumference of the drill bit and can hook the pipe wall cut-off part formed after cutting by the cylindrical cutter, the possibility that the pipe wall cut-off part falls into the pipeline is completely eradicated, potential safety hazards are eliminated, and the construction efficiency is improved.
Drawings
Fig. 1 shows a schematic perspective view of an embodiment of the present invention.
Fig. 2 shows a schematic side view of a hook material structure according to an embodiment of the invention.
Fig. 3 shows a schematic view of the hook material structure on the other side of the hook material structure according to an embodiment of the invention.
FIG. 4 is a schematic view of a drill bit beginning to drill a hole in a cut-away portion of a tube wall in accordance with an embodiment of the present invention.
Fig. 5 is a schematic view showing a state where the drill bit passes through the cut-off portion of the pipe wall with hook material according to an embodiment of the present invention.
Fig. 6 is a schematic view showing a state that the hook material passes through the cut-off portion of the pipe wall and then is laid down on the hook limiting portion to hook the cut-off portion of the pipe wall in one embodiment of the present invention.
Fig. 7 shows a partial structural view of a drill rod according to another embodiment of the invention.
Fig. 8 shows a schematic structural diagram of a further embodiment of the present invention.
In the figure: 1 cylinder cutter, 2 center drills, 21 drill rods, 22 drill bits, 23 pivot holes, 24 material hook limiting parts, 25 material hook accommodating spaces, 3 material hooks, 31 working ends, 32 pivot ends and 4 pipe wall cutting parts
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Example 1:
referring to fig. 1 to 3, which illustrate a specific embodiment of the hooking device for the tapping construction of the pressurized pipeline according to the present invention, the hooking device is disposed on a drill rod 21 of a center drill 2, and the center drill 2 is disposed coaxially with a cylindrical cutter 1. The drill head 22 of the core drill 2 projects beyond the cutting edge of the cylinder cutter 1.
The normal construction process of tapping under pressure is as follows: firstly, determining the position of an opening, then, positioning a central drill, cutting the pipe wall by a cylindrical cutter after positioning, and separating part of the pipe wall (namely the pipe wall cut-off part 4) from the pipeline after cutting.
In the prior art, after the pipe wall cutting part 4 is separated from the pipeline, an operator cannot pick up the pipe because the pipe wall cutting part is positioned on the inner side of the cutter diameter of the cylindrical cutter.
The innovation of the invention is that the drill rod 21 is provided with a swingable hook 3 at a position where the drill rod 21 is close to the drill bit 22, and the drill rod 21 is provided with a pivot hole 23 (optimally, the pivot hole 23 is on the axis of the drill rod 21). The material hook 3 is arranged on the drill rod 21 in a swinging way through a pivot hole 23.
In this embodiment, the material hook 3 is a strip. One end of the material hook 3 is a pivot end 32 matched with the pivot hole 23, and the other end of the material hook 3 is a working end 31.
The drill rod 21 is further provided with a material hook accommodating space 25. In this embodiment, the hook receiving space 25 is a groove on the drill rod 21.
Fig. 4 is a schematic view showing a state where the drill 22 starts to open the hole in the tube wall cut-out 4.
Fig. 5 is a schematic view showing a state where the drill 22 carries the hook material 3 across the pipe wall cut-out 4.
Fig. 6 is a schematic view showing a state that the hook 3 swings and lies on the hook stopper 24 and hooks the tube wall cut-out portion 4 after passing through the tube wall cut-out portion 4.
When the drill bit 22 passes through the pipe wall cut-off part 4 of the pipeline under pressure, the drill rod 21 rotates at high speed and the pivot hole 23 is arranged on the axis of the drill rod 21, the material hook 3 swings and erects to be basically arranged on the axis of the drill rod 21 and is arranged in the groove (not contacted with the pipe wall) in an upright state to pass through the pipe wall cut-off part 4 together with the drill bit 22.
After the drill bit 22 passes through the pipe wall cut-off part 4 of the pressurized pipeline, the material hook 3 tilts to one side under the action of the dead weight and then is in a horizontal state, and the working end 31 of the material hook 3 extends out of the outer circumference of the drill bit 22 (at this time, the material hook 3 is integrally positioned below the separated pipe wall cut-off part 4).
Preferably, the drill rod 21 is provided with a material hook limiting portion 24 (i.e. a platform on the lower side of the groove) on the lower side of the pivot hole 23, so that the material hook 3 is kept in a horizontal state (without sagging) after the drill bit 22 passes through the pipe wall cut-off portion 4 of the pressurized pipe. In the subsequent process that the material hook 3 lifts up together with the pipe wall cut-off part 4, the material hook limiting part 24 provides supporting force for the material hook 3.
In this embodiment, two material hooks 3 are symmetrically arranged on the drill rod 21 along the radial direction, and two material hook accommodating spaces 25 are correspondingly and symmetrically arranged.
In some simple embodiments, the technical purpose of the invention can be basically achieved by only using a single-sided section of the hook 3.
In different embodiments, the two hooks 3 may be separate bodies or may be an integral U-shaped structure.
In addition, in different embodiments it is also possible that the pivot hole 23 is not on the axis of the drill rod 21.
Example 2:
as shown in fig. 7, in an embodiment of the hooking device for tapping a pipe under pressure according to the present invention, two sets of hooks 3 are axially disposed on the drill rod 21, and two sets of hook receiving spaces 25 are correspondingly disposed on the drill rod.
The two groups of hook accommodating spaces 25 are arranged on the circumference of the drill rod 21 in a staggered manner. The angle of the offset is in particular selected to be 90 degrees. The staggered arrangement can improve the reliability of the hook material. Providing a more stable supporting force for the tube wall cut-out 4 having a large self-weight.
Example 3:
as shown in fig. 8, in a specific embodiment of the hooking device for pipe boring construction under pressure of the present invention, in this embodiment, the outer diameter of the drill rod 21 is smaller than the outer diameter of the drill bit 22. Therefore, in the present embodiment, the hook receiving space 25 of the present invention is formed between the outer circumferential extension surface of the drill bit 22 and the outer circumference of the drill rod 21.
The structure is simpler, and is particularly suitable for large-diameter drill bits.
Due to the structural design, the drill rod at the tail part of the drill bit is provided with the material hook and the material hook accommodating space. When the drill bit passes through the pipe wall cutting part of the pressurized pipeline, the material hook is avoided in the material hook accommodating space; after the drill bit passes through the pipe wall cut-off part of the pipeline under pressure, the material hook is in a horizontal state along with self weight, the working end of the material hook extends out of the outer circumference of the drill bit and can hook the pipe wall cut-off part generated after cutting by the cylindrical cutter, the possibility that the pipe wall cut-off part falls into the pipeline is completely eradicated, potential safety hazards are eliminated, and the construction efficiency is improved.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A material hooking device for tapping construction of a pressure pipeline is arranged on a drill rod of a central drill, and the central drill and a cylindrical cutter are coaxially arranged; the drill head of the center drill extends out of the cutting edge of the cylindrical cutter; the method is characterized in that: a swingable material hook is arranged on the drill rod at a position close to the drill bit; a material hook accommodating space is formed in the drill rod; when the drill bit penetrates through the pipe wall cutting part of the pressurized pipeline, the material hook is avoided in the material hook accommodating space; when the drill bit passes through the pipe wall cutting part of the pipeline with pressure, the material hook is in a horizontal state along with self weight, and the working end of the material hook extends out of the outer circumference of the drill bit.
2. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 1, wherein: the material hook accommodating space is a groove on the drill rod.
3. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 1, wherein: the outer diameter of the drill rod is smaller than that of the drill bit; and a hook accommodating space is formed between the outer circumferential extension surface of the drill bit and the outer circumference of the drill rod.
4. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 1, wherein: the material hook can be arranged on the drill rod in a swinging mode through the pivot hole in the drill rod.
5. The hooking device for the tapping construction of the pipeline under pressure as set forth in claim 4, wherein: the drill rod is arranged on the lower side of the pivot hole and provided with a material hook limiting part.
6. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 1, wherein: the drill rod is symmetrically provided with two material hooks along the radial direction, and correspondingly and symmetrically provided with two material hook accommodating spaces.
7. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 6, wherein: two groups of material hooks are axially arranged on the drill rod, and two groups of material hook accommodating spaces are correspondingly formed in the drill rod; the two groups of material hook accommodating spaces are arranged on the circumference of the drill rod in a staggered mode.
8. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 6, wherein: the material hook is a strip-shaped object; one end of the material hook is a pin joint end matched with the pin joint hole, and the other end of the material hook is a working end.
9. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 6, wherein: the two material hooks are of an integrated U-shaped structure.
10. The hooking device for the tapping construction of the pipeline under pressure as claimed in claim 1, wherein: the pivot hole is positioned on the axis of the drill rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717197.0A CN113333827A (en) | 2021-06-28 | 2021-06-28 | Hook material device for under-pressure pipeline tapping construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717197.0A CN113333827A (en) | 2021-06-28 | 2021-06-28 | Hook material device for under-pressure pipeline tapping construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113333827A true CN113333827A (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110717197.0A Pending CN113333827A (en) | 2021-06-28 | 2021-06-28 | Hook material device for under-pressure pipeline tapping construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113333827A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433908A (en) * | 2022-03-03 | 2022-05-06 | 锐驰高科股份有限公司 | Pressure fishing device for pipeline perforated falling piece |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524221U (en) * | 1991-09-09 | 1993-03-30 | 三菱樹脂株式会社 | Hole saw |
| JP3170938U (en) * | 2011-07-27 | 2011-10-06 | 有限会社アールシーコア．イチカワ | Cutting core fall prevention adapter and core bit for core bit |
| CN203044994U (en) * | 2012-12-27 | 2013-07-10 | 重庆科众机械有限公司 | Combined-type solid material drill bit |
| JP3210139U (en) * | 2017-02-15 | 2017-04-27 | 理研ダイヤモンド工業株式会社 | Perforated core fall prevention device |
| CN107096948A (en) * | 2017-05-10 | 2017-08-29 | 中国石油大学(华东) | It is a kind of to reclaim the cylinder knife of saddle plate automatically |
| CN207309026U (en) * | 2017-08-27 | 2018-05-04 | 泰达长林管道科技（江西）股份有限公司 | A kind of new suction bits boring cutter |
| CN210059912U (en) * | 2019-06-26 | 2020-02-14 | 六合峰（天津）科技股份有限公司 | Pressure perforating drill bit |
| CN213317902U (en) * | 2020-08-30 | 2021-06-01 | 北京实利信达仪器设备有限公司 | Pipeline tapping knife |
-
2021
- 2021-06-28 CN CN202110717197.0A patent/CN113333827A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524221U (en) * | 1991-09-09 | 1993-03-30 | 三菱樹脂株式会社 | Hole saw |
| JP3170938U (en) * | 2011-07-27 | 2011-10-06 | 有限会社アールシーコア．イチカワ | Cutting core fall prevention adapter and core bit for core bit |
| CN203044994U (en) * | 2012-12-27 | 2013-07-10 | 重庆科众机械有限公司 | Combined-type solid material drill bit |
| JP3210139U (en) * | 2017-02-15 | 2017-04-27 | 理研ダイヤモンド工業株式会社 | Perforated core fall prevention device |
| CN107096948A (en) * | 2017-05-10 | 2017-08-29 | 中国石油大学(华东) | It is a kind of to reclaim the cylinder knife of saddle plate automatically |
| CN207309026U (en) * | 2017-08-27 | 2018-05-04 | 泰达长林管道科技（江西）股份有限公司 | A kind of new suction bits boring cutter |
| CN210059912U (en) * | 2019-06-26 | 2020-02-14 | 六合峰（天津）科技股份有限公司 | Pressure perforating drill bit |
| CN213317902U (en) * | 2020-08-30 | 2021-06-01 | 北京实利信达仪器设备有限公司 | Pipeline tapping knife |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433908A (en) * | 2022-03-03 | 2022-05-06 | 锐驰高科股份有限公司 | Pressure fishing device for pipeline perforated falling piece |
| CN114433908B (en) * | 2022-03-03 | 2024-04-26 | 锐驰高科股份有限公司 | Under-pressure salvaging device for pipeline perforating and falling sheet |
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