CN214093288U - Device for reducing drag resistance of pipeline during horizontal directional drilling construction - Google Patents
Device for reducing drag resistance of pipeline during horizontal directional drilling construction Download PDFInfo
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- CN214093288U CN214093288U CN202023258706.8U CN202023258706U CN214093288U CN 214093288 U CN214093288 U CN 214093288U CN 202023258706 U CN202023258706 U CN 202023258706U CN 214093288 U CN214093288 U CN 214093288U
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- drags
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Abstract
The utility model relates to a construction field, concretely relates to a device that is used for horizontal directional drilling construction to reduce pipeline and returns to dragging helping hand. A device that is used for horizontal directional drilling construction to reduce pipeline and drags helping hand back, drags pipeline income soil end interval back and is provided with support adjusting device, support adjusting device includes the gasbag that sets gradually along the pipeline and prevent the dead lever that the gasbag removed, the gasbag is connected the air pump, drags the pipeline back and places on the gasbag, drags pipeline one end back and links to each other with the rig drill bit. The utility model discloses an aerify and make the gasbag inflation in order to support back to drag the pipeline, can make the pipeline not with the ground contact, improved the pipeline back and drag the speed, at the pipeline back drag the in-process, adjust the height of gasbag through the air content of adjustment gasbag, and then the adjustment pipeline back drags the angle of burying of in-process, the angle of burying is less, its pipeline back drags the resistance less, reduces the pipeline loss rate, for shortening construction cycle, improved construction quality and created the advantage.
Description
Technical Field
The utility model relates to a building construction field, the device that reduces the pipeline and return to dragging resistance in the construction of the dragging pipe of horizontal directional drilling in concretely relates to non-excavation construction underground.
Background
Non-excavation refers to a construction technology for laying, replacing and repairing various underground pipelines under the condition of excavating on a very small part of the earth surface (generally referred to small-area excavation at an inlet and an outlet) by using various rock-soil drilling equipment and technical means in a guiding mode, a directional drilling mode and the like. The pipeline installation adopts a back dragging mode to enable the pipeline to penetrate through an excavated channel, and the horizontal directional drill is usually used in the current construction means and has the phenomena that the back dragging resistance of the pipeline is large and the soil entering angle of the pipeline is not well controlled, so that the pipe waste is caused, the construction efficiency is influenced, the engineering progress is slow, and the construction cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving current horizontal directional drilling back to drag the helping hand big, the not good technical problem of control of angle of burying provides a device that is used for horizontal directional drilling construction to reduce the pipeline back to drag the resistance, supports the pipeline through the gasbag, makes the pipeline not contact with ground, improves the pipeline back to drag the speed, and accessible adjustment gasbag tolerance adjusts the pipeline back to drag the angle of burying of in-process simultaneously, reduces the pipeline back to drag the helping hand, reduces the pipeline loss rate.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a device that is used for horizontal directional drilling construction to reduce pipeline and returns and drags resistance, returns to drag pipeline and buries the end interval and be provided with support adjusting device, support adjusting device includes the gasbag that sets gradually along the pipeline and prevent the dead lever that the gasbag removed, the gasbag is connected the air pump, returns to drag the pipeline and places on the gasbag, returns to drag pipeline one end and links to each other with the rig drill bit.
Furthermore, the number of the fixed rods is two, the two fixed rods are arranged oppositely, and the back dragging pipeline is located between the two fixed rods.
Further, the bottom of the fixing rod is fixed underground.
Further, the balloon size is selected based on the towback tubing size.
Further, the air bag is a rubber air bag.
The utility model discloses beneficial effect as follows:
(1) the utility model discloses an aerify and make the gasbag inflation in order to support back to drag the pipeline, can make the pipeline not with the ground contact, improved the pipeline back and drag the speed, at the pipeline back drag the in-process, adjust the height of gasbag through the air content of adjustment gasbag, and then the adjustment pipeline back drags the angle of burying of in-process, the angle of burying is less, its pipeline back drags the resistance less, reduces the pipeline loss rate, for shortening construction cycle, improved construction quality and created the advantage.
(2) The utility model discloses two dead levers among the support adjusting device can restrict the gasbag at the longitudinal displacement that the roll in-process takes place, also can restrict the lateral displacement of pipeline on the gasbag simultaneously, ensure that pipeline axis aligns with the drill way central line, can reduce the error on the pipeline elevation effectively.
(3) The utility model discloses an inflatable rubber air bag, rubber air bag have intensity height, wear-resisting ageing-resistant, the gas tightness is good, factor of safety is high, characteristics such as portable simple easy transport, are applicable to any construction environment, can effectively practice thrift construction cost.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a side view of the structure of the present invention.
Fig. 3 is a schematic view of the application of the present invention.
In the figure: 1. the device comprises a fixed rod, 2 an inflatable rubber air bag, 3 a polyethylene PE pipe and alpha buried angle.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples, but the present invention is not limited to the specific examples.
The device for reducing the drag resistance of the pipeline in the horizontal directional drilling construction as shown in the figure 1-2 comprises air bags and fixing rods 1 for preventing the air bags from moving, wherein the supporting and adjusting devices are arranged at the soil-entering end of the pipeline, the supporting and adjusting devices are sequentially arranged along the dragging direction of the pipeline, the bottoms of the fixing rods 1 are fixed underground, two fixing rods 1 are arranged oppositely, the length of each fixing rod 1 is 800mm, the distance between the two fixing rods 1 is 800mm, the distance between each fixing rod 1 and the extension line of the positioning axis is 400mm, the air bags are inflatable rubber air bags 2 and are inflated by air pumps, the air bags with the inner diameter of 400mm and the length of 1000mm are selected according to the size of the pipeline to be dragged, the centers of the air bags are positioned on the extension line of the positioning axis, the pipeline to be dragged is placed on the inflatable rubber air bags 2 and is positioned between the two fixing rods 1, one end of the pipeline to be dragged is connected with a drill bit of a drilling machine, the two fixing rods 1 can limit the longitudinal displacement of the air bag in the rolling process and can limit the transverse displacement of the pipeline on the air bag, so that the axis of the pipeline is aligned with the center line of the orifice, and the error of the pipeline in elevation can be effectively reduced.
Adopt the utility model discloses the construction method who constructs the device that reduces the pipeline and back to drag helping hand of directional brill of level does:
the first step is as follows: carrying out axis positioning on the construction route of the horizontal directional drill on the ground, marking an axis extension line at the position, and determining an earth entering point and an earth discharging point of mechanical equipment of the horizontal directional drill;
the second step is that: placing the polyethylene PE pipe 3 which is subjected to hot melting welding on an extension line of the pipeline axis, wherein the pipeline center line is superposed with the extension line;
the third step: fixing rods 1 are arranged at the soil inlet end of the back-dragging pipeline, namely on the pipeline axis extension line every 10-30 m, the bottoms of the fixing rods 1 are fixed underground to form a stable limiting rod, and the initial position is located at the outer edge of a soil inlet pit of the pipeline;
the fourth step: an inflatable rubber air bag 2 is placed in front of the fixed rods 1 and connected with an air pump for inflation, the inflation quantity is adjusted at the same time, the air content of the air bag is adjusted according to the size of a back dragging pipeline, the height of the air bag is generally adjusted to be 1/4 mm, which is about 100mm, the height of the fixed rods 1 is higher than the height of the air bag after inflation, the pipeline is placed on the air bag and passes through the two fixed rods 1 to be connected with a drill bit of a drilling machine;
the fifth step: the soil-entering angle alpha during the pipeline back-dragging is adjusted by adjusting the air content of the air bag, the back-dragging assisting force of the pipeline is reduced, the smaller the height of the air bag supporting pipeline is in the pipeline back-dragging process, the smaller the soil-entering angle alpha is, the closer the pipeline is to the horizontal, and the smaller the back-dragging resistance is.
The utility model discloses an aerify and make the gasbag inflation in order to support back to drag the pipeline, can make the pipeline not with the ground contact, the pipeline back speed of dragging has been improved, back dragging the in-process at the pipeline, the height of gasbag is adjusted through the tolerance of adjustment gasbag, and then the adjustment pipeline back drags the angle of burying of in-process, the angle of burying is less, its pipeline back drags the resistance less, reduce the pipeline loss rate, for shortening construction cycle, the advantage has been created to improvement construction quality, adopt inflatable rubber gasbag, rubber gasbag has intensity height, wear-resisting ageing-resistant, the gas tightness is good, high safety factor, characteristics such as portable simple easy transport, be applicable to any construction environment, construction cost can effectively be practiced thrift.
The above description is further detailed in connection with the preferred embodiments of the present invention, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses a under the prerequisite of the design, can also make simple deduction and replacement, all should regard as the utility model discloses a protection scope.
Claims (5)
1. A device for horizontal directional drilling construction reduces pipeline back and drags resistance, its characterized in that: the back-dragging pipeline is provided with supporting and adjusting devices at intervals at the soil-entering end, each supporting and adjusting device comprises an air bag and a fixing rod, the air bags are sequentially arranged along the dragging direction of the pipeline, the fixing rods prevent the air bags from moving, the air bags are connected with an air pump, the back-dragging pipeline is placed on the air bags, and one end of the back-dragging pipeline is connected with a drill bit of a drilling machine.
2. The apparatus for reducing drag back of a pipe for use in horizontal directional drilling construction of claim 1, wherein: the number of the fixed rods is two, the two fixed rods are arranged oppositely, and the back dragging pipeline is located between the two fixed rods.
3. The apparatus for reducing drag back of a pipe for use in horizontal directional drilling construction of claim 1, wherein: the bottom of the fixed rod is fixed underground.
4. The apparatus for reducing drag back of a pipe for use in horizontal directional drilling construction of claim 1, wherein: the size of the air bag is selected according to the size of the back dragging pipeline.
5. The device for reducing the back dragging resistance of the pipeline for the construction of the horizontal directional drill according to any one of claims 1 to 4, wherein: the air bag is a rubber air bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023258706.8U CN214093288U (en) | 2020-12-29 | 2020-12-29 | Device for reducing drag resistance of pipeline during horizontal directional drilling construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023258706.8U CN214093288U (en) | 2020-12-29 | 2020-12-29 | Device for reducing drag resistance of pipeline during horizontal directional drilling construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214093288U true CN214093288U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023258706.8U Active CN214093288U (en) | 2020-12-29 | 2020-12-29 | Device for reducing drag resistance of pipeline during horizontal directional drilling construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214093288U (en) |
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2020
- 2020-12-29 CN CN202023258706.8U patent/CN214093288U/en active Active
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