CN212614489U - Circular cutting tube drawing drilling machine - Google Patents
Circular cutting tube drawing drilling machine Download PDFInfo
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- CN212614489U CN212614489U CN202021155185.0U CN202021155185U CN212614489U CN 212614489 U CN212614489 U CN 212614489U CN 202021155185 U CN202021155185 U CN 202021155185U CN 212614489 U CN212614489 U CN 212614489U
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Abstract
The utility model provides a circular cutting tube drawing drill, which comprises a circular cutting drill bit, a first drill rod and a second drill rod which are parallel to each other, and is characterized in that the circular cutting drill bit is of a sleeve-shaped structure, and the front end of the circular cutting drill bit is provided with a circular milling cutter; a driven gear is arranged on the circular cutting drill bit, and a circular cutting drill bit sheath is arranged on the outer side of the driven gear; a first drill rod sheath and a second drill rod sheath are respectively arranged on two sides of the circular cutting drill bit sheath; the first drill rod sheath is nested on the first drill rod, and the second drill rod sheath is nested on the second drill rod; the first drill rod sheath is communicated with the interior of the annular cutting drill bit sheath; the first drill rod is provided with a driving gear meshed with the driven gear, the driving gear is arranged in the first drill rod sheath, aiming at the technical difficulty of replacement and maintenance of the trenchless pipeline, an annular space is cut along the outer wall of the old pipeline to be replaced by using an annular cutting and pipe drawing drilling machine, the old pipeline to be replaced is thoroughly stripped from peripheral soil, the old pipeline can be easily pulled out, and a new pipeline to be replaced is synchronously brought in.
Description
Technical Field
The utility model belongs to the technical field of non-excavation construction technique and specifically relates to a circular cut tube drawing construction technology and circular cut tube drawing rig are related to.
Background
The non-excavation is a new construction technology for laying, replacing and repairing various underground pipelines by utilizing various rock-soil drilling equipment and technical means under the condition of excavating on a very small part of the earth surface (generally referred to as small-area excavation at an inlet and an outlet) in the modes of guiding, directional drilling and the like, does not obstruct traffic, does not damage green lands and vegetation, does not influence the normal life and work order of shops, hospitals, schools and residents, solves the problem that the traditional excavation construction interferes with the life of the residents, and damages and adverse effects on the traffic, environment and the foundation of surrounding buildings, and therefore has higher social and economic effects.
The trenchless construction process is widely applied to the construction work of underground pipelines, because the service life of the pipelines is limited, the old pipelines need to be replaced before the service life of the pipelines expires, and at present, the known methods for replacing the old pipelines in the underground of cities are as follows: grooving for newly burying a pipe, and cracking (expanding) the pipe.
The method has the disadvantages of large engineering quantity and high investment, not only damages the existing infrastructure, but also easily causes large-area traffic jam, seriously causes normal work and life of residents, and damages the environment to cause pollution;
the pipe cracking method (pipe expansion method) is to use a drilling machine with a pipe cracking head to crush an old pipeline, extrude the fragments of the pipeline into the surrounding soil, and pull in a new pipeline at the same time, thereby completing the processes of old pipe abandonment and new pipe laying at one time; the method has the disadvantages that the extrusion and vibration during crushing of the old pipe can cause public hazard to buildings around the city, crude oil slurry and other waste dirt in the crushed old pipe and the pipeline remain in soil to pollute the surface soil layer, and part of substances which are not easy to degrade can influence the plant growth and the ecological environment.
Therefore, how to take out the underground pipeline from the underground in a non-excavation mode to realize the replacement and repair of the pipeline in the true sense is a technical problem which needs to be solved urgently at present, the pipeline is buried underground all the year round, the soil layer around the pipeline can generate very stable extrusion on the pipeline under the action of gravity, the traditional non-development pipe drawing process is adopted, the extrusion force of the soil layer on the pipeline cannot be overcome, the pipeline is smoothly drawn out, the technical key for taking out the old pipeline in the non-excavation mode is realized, and the extrusion force of the soil layer around the pipeline is solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an annular cutting tube drawing construction technology and annular cutting tube drawing rig, change the maintenance technology difficult point to non-excavation pipeline, utilize annular cutting tube drawing rig, along waiting to change old pipeline outer wall and cutting out annular space, realize waiting to change old pipeline thoroughly to peel off with peripheral earth for old pipeline can be extracted easily, brings the new pipeline of replacement in step into, realizes the most genuine pipeline replacement, solves the drawback that prior art exists.
The utility model discloses a following technical scheme realizes:
(1) digging operation wells at two ends of the old pipeline to be replaced;
(2) arranging a circular cutting pipe drawing drilling machine in an operation well pit at one end of the old pipeline to be replaced, and selecting a circular cutting drill bit matched with the outer diameter of the old pipeline to be replaced;
(3) starting a drilling machine, drilling the annular cutting drill bit along the old pipeline to be replaced, performing annular cutting along the outer diameter of the old pipeline to be replaced, stripping the old pipeline to be replaced from peripheral soil, and stopping drilling when the annular cutting drill bit continuously drills through the operation well pit at the other end of the old pipeline to be replaced;
(4) connecting and fixing the ring cutting drill bit and the old pipeline to be replaced, and synchronously connecting a new pipeline;
(5) and controlling the drilling machine to pull back the drill rod, and pulling out the old pipeline to be replaced and bringing the old pipeline into a new pipeline.
Preferably, in the step (2), the ring-cutting bit is a ring bit capable of rotary cutting, and the inner diameter of the ring bit is slightly larger than the outer diameter of the old pipeline to be replaced.
Preferably, in the step (3), in the process of drilling by the circular cutting drill bit, high-pressure bentonite slurry is synchronously introduced to play a cooling and lubricating role, the drilled circular cut hole wall is fixed, and the cut soil is suspended and sent out.
The utility model provides a circular cutting tube drawing drill, which comprises a circular cutting drill bit, a first drill rod and a second drill rod which are parallel to each other;
the annular cutting drill bit is of a sleeve-shaped structure, and the front end of the annular cutting drill bit is provided with an annular milling cutter; a driven gear is arranged on the circular cutting drill bit, and a circular cutting drill bit sheath is arranged on the outer side of the driven gear; a first drill rod sheath and a second drill rod sheath are respectively arranged on two sides of the circular cutting drill bit sheath; the first drill rod sheath is nested on the first drill rod, and the second drill rod sheath is nested on the second drill rod;
the first drill rod sheath is communicated with the interior of the annular cutting drill bit sheath; and the first drill rod is provided with a driving gear meshed with the driven gear, and the driving gear is arranged in the first drill rod sheath.
Preferably, the first drill rod and the second drill rod are both provided with cutting drill bits.
Preferably, the rear end of the ring cutting drill bit may also be provided with a ring mill.
As an alternative of the present invention, the gear driving relationship between the first drill rod and the ring-cutting drill bit may also be replaced by a chain or other driving means.
The utility model discloses a circular cutting drawbench principle as follows:
the annular cutting drill bit is driven by the first drill rod and the second drill rod to drill forwards along an old pipeline to be replaced, the first drill rod and the second drill rod rotate and drive the driven gear to rotate through the driving gear of the first drill rod, the annular cutting drill bit is driven to rotate, soil around the old pipeline to be replaced is stripped by the annular milling cutter at the front end of the annular cutting drill bit, the annular cutting drill bit is drilled into an operation well pit at the other end of the old pipeline to be replaced, the old pipeline to be replaced and the annular cutting drill bit are connected and fixed, a new pipeline is connected at the same time, the drill rods are controlled to be pulled back, the old pipeline to be replaced is extracted, and the new pipeline is brought into the old pipeline.
The utility model has the beneficial technical effects that:
the utility model provides a circular cutting pipe drawing construction process, aiming at the technical difficulty of non-excavation pipeline replacement and maintenance, a circular cutting pipe drawing drill is utilized to cut an annular space along the outer wall of an old pipeline to be replaced, so as to realize the complete stripping of the old pipeline to be replaced and peripheral soil, and form an annular space along the outer wall of the old pipeline to be replaced, thereby creating a good construction premise for the subsequent work of pulling away the old pipeline to be replaced and laying a new pipeline, because the milled annular hole space is larger than the outer diameter of the original pipeline, the construction difficulty caused by the structural damage of the old pipeline to be replaced can be avoided in the construction process, and simultaneously, a new pipe with the same specification or a pipeline with larger specification can be laid again according to the design requirement in a way of reaming again, and the defect that the environment pollution of the old pipe can only be destroyed or the flow area of the pipeline can be reduced in the thorough traditional pipeline updating process, provides a new idea and a feasible scheme for the updating and the maintenance of the old pipeline to be replaced in the city.
The utility model also provides a circular cutting drawbench, which has simple structure and novel design, realizes the circular cutting drilling along the pipeline, adopts the double-drill-rod driving mode, not only improves the drilling power, but also ensures the drilling stability of the drilling machine; the utility model discloses all set up cutting drill on first drilling rod and second drilling rod, cooperation circular cutting drill work has further improved the efficiency of creeping into.
Drawings
FIG. 1 is a schematic structural view of a circular cutting and pipe drawing drill according to the present invention;
fig. 2 is a schematic structural diagram of the circular cutting tube-drawing drilling machine of the present invention after the circular cutting bit sheath and the first drill rod rear sleeve are removed.
In the figure: 1. the annular cutting drill bit comprises an annular cutting drill bit body, 2, a first drill rod body, 3, a second drill rod body, 4, an annular milling cutter, 5, a driven gear, 6, an annular cutting drill bit sheath, 7, a first drill rod sheath, 8, a second drill rod sheath, 9, a driving gear, 10, a cutting drill bit and 11 and an old pipeline to be replaced.
Detailed Description
The following description of the embodiments will help the public to understand the present invention, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any changes in the definition of the components or technical features and/or in the form of the overall structure rather than substantial changes should be considered as the protection scope defined by the technical solution of the present invention.
The embodiment provides a circular cutting tube drawing construction process, which is characterized by comprising the following steps:
firstly, digging operation wells at two ends of an old pipeline to be replaced;
step two, arranging a circular cutting pipe drawing drilling machine in an operation well pit at one end of the old pipeline to be replaced, and selecting a circular cutting drill bit matched with the outer diameter of the old pipeline to be replaced;
starting a drilling machine, drilling the annular cutting drill bit along the old pipeline to be replaced, performing annular cutting along the outer diameter of the old pipeline to be replaced, stripping the old pipeline to be replaced from peripheral soil, and stopping drilling when the annular cutting drill bit continuously drills through the operation well pit at the other end of the old pipeline to be replaced;
step four, fixedly connecting the ring cutting drill bit with the old pipeline to be replaced, and synchronously connecting the new pipeline;
and step five, controlling the drilling machine to pull back the drill rod, and pulling out the old pipeline to be replaced and bringing the old pipeline into a new pipeline.
In the second step, the ring cutting drill bit is a rotary cutting ring drill bit, and the inner diameter of the ring cutting drill bit is slightly larger than the outer diameter of the old pipeline to be replaced.
And in the third step, in the drilling process of the circular cutting drill bit, high-pressure bentonite slurry is synchronously introduced to play a role in cooling and lubricating, the drilled circular cutting hole wall is fixed, and the soil obtained by circular cutting is suspended and sent out.
The embodiment also provides a circular cutting tube drawing drilling machine which comprises a circular cutting drill bit 1, a first drill rod 2 and a second drill rod 3 which are parallel to each other;
the ring cutting drill bit 1 is of a sleeve type structure, and the front end of the ring cutting drill bit is provided with a ring-shaped milling cutter 4; a driven gear 5 is arranged on the circular cutting drill bit 1, and a circular cutting drill bit sheath 6 is arranged on the outer side of the driven gear 5; a first drill rod sheath 7 and a second drill rod sheath 8 are respectively arranged on two sides of the circular cutting drill bit sheath 6; the first drill rod sheath 7 is nested on the first drill rod 2, and the second drill rod sheath 8 is nested on the second drill rod 3;
the first drill rod jacket 7 is communicated with the inside of the annular cutting drill bit jacket 6; and a driving gear 9 meshed with the driven gear 5 is arranged on the first drill rod 2, and the driving gear 9 is arranged in the first drill rod sheath 7.
The first drill rod 2 and the second drill rod 3 are both provided with cutting drill bits 10.
The principle of the ring cutting drawbench of the embodiment is as follows:
the annular cutting drill bit 1 is driven by the first drill rod 2 and the second drill rod 3 to drill forwards along an old pipeline 11 to be replaced, the first drill rod 2 and the second drill rod 3 rotate and simultaneously drive the driven gear 5 to rotate through the driving gear 9 of the first drill rod, so that the annular cutting drill bit 1 is driven to rotate, soil around the old pipeline 11 to be replaced is stripped by the annular milling cutter 4 at the front end of the annular cutting drill bit 1, the annular cutting drill bit is drilled into an operation pit at the other end of the old pipeline 11 to be replaced, the old pipeline 11 to be replaced is connected and fixed with the annular cutting drill bit 1, a new pipeline is connected at the same time, the drill rod is controlled to be pulled back, the old pipeline 11 to be replaced is pulled out, and the new pipeline is.
The beneficial technical effects of this embodiment are:
the embodiment provides a circular cutting pipe-drawing construction process, aiming at the technical difficulty of non-excavation pipeline replacement and maintenance, a circular cutting pipe-drawing drilling machine is utilized to cut an annular space along the outer wall of an old pipeline to be replaced, so that the old pipeline to be replaced is thoroughly stripped from peripheral soil, an annular space is formed along the outer wall of the old pipeline to be replaced, a good construction premise is created for the subsequent work of pulling away the old pipeline to be replaced and installing and laying a new pipeline, because the milled annular hole space is larger than the outer diameter of the original pipeline, the construction difficulty caused by structural damage of the old pipeline to be replaced can be avoided in the construction process, meanwhile, a new pipeline with the same specification or a pipeline with a larger specification can be re-laid in a secondary reaming mode according to the design requirement, and the defect that only the old pipeline pollutes the environment or the overflowing area of the pipeline can be reduced in the traditional pipeline updating process is thoroughly broken through, provides a new idea and a feasible scheme for updating the old pipeline to be replaced in the city.
The embodiment also provides a circular cutting drawbench drilling machine which has simple structure and novel design and realizes circular cutting drilling along the pipeline, and the circular cutting drawbench of the utility model adopts a double-drill-rod driving mode, thereby not only improving the drilling power, but also ensuring the drilling stability of the drilling machine; the utility model discloses all set up cutting drill on first drilling rod and second drilling rod, cooperation circular cutting drill work has further improved the efficiency of creeping into.
Of course, the present invention can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.
Claims (4)
1. A circular cutting tube drawing drill comprises a circular cutting drill bit, a first drill rod and a second drill rod which are parallel to each other, and is characterized in that the circular cutting drill bit is of a sleeve type structure, and the front end of the circular cutting drill bit is provided with a circular milling cutter; a driven gear is arranged on the circular cutting drill bit, and a circular cutting drill bit sheath is arranged on the outer side of the driven gear; a first drill rod sheath and a second drill rod sheath are respectively arranged on two sides of the circular cutting drill bit sheath; the first drill rod sheath is nested on the first drill rod, and the second drill rod sheath is nested on the second drill rod; the first drill rod sheath is communicated with the interior of the annular cutting drill bit sheath; and the first drill rod is provided with a driving gear meshed with the driven gear, and the driving gear is arranged in the first drill rod sheath.
2. The annular cutting and tube drawing drill according to claim 1, wherein the first and second drill rods each have a cutting bit disposed thereon.
3. The ring cutting tube drawing drill according to claim 1, wherein the rear end of the ring cutting drill is provided with a ring mill.
4. The annular tube drawing drill according to claim 1, wherein the gear drive relationship between the first drill rod and the annular cutting bit is replaced with a chain drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021155185.0U CN212614489U (en) | 2020-06-21 | 2020-06-21 | Circular cutting tube drawing drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021155185.0U CN212614489U (en) | 2020-06-21 | 2020-06-21 | Circular cutting tube drawing drilling machine |
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| Publication Number | Publication Date |
|---|---|
| CN212614489U true CN212614489U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021155185.0U Active CN212614489U (en) | 2020-06-21 | 2020-06-21 | Circular cutting tube drawing drilling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692424A (en) * | 2020-06-21 | 2020-09-22 | 江苏地龙重型机械有限公司 | Circular cutting pipe drawing construction process and circular cutting pipe drawing drilling machine |
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2020
- 2020-06-21 CN CN202021155185.0U patent/CN212614489U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692424A (en) * | 2020-06-21 | 2020-09-22 | 江苏地龙重型机械有限公司 | Circular cutting pipe drawing construction process and circular cutting pipe drawing drilling machine |
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