CN215672048U

CN215672048U - Non-excavation horizontal directional drilling pipe laying construction device

Info

Publication number: CN215672048U
Application number: CN202120370366.3U
Authority: CN
Inventors: 王强; 胡晓莲; 余宏辉; 熊超; 赵静; 娄一鸣
Original assignee: JIANGXI FIRST CONSTRUCTION ENGINEERING CORP
Current assignee: JIANGXI FIRST CONSTRUCTION ENGINEERING CORP
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-01-28
Anticipated expiration: 2031-02-10

Abstract

The utility model provides a trenchless horizontal directional drilling pipe laying construction device which comprises a guiding device, a drilling device, a hole expanding device and a pipe drawing device, wherein the guiding device is arranged on the drilling device; wherein the guiding device detects the underground pipeline within the construction path range; the drilling device is used for drilling the stratum and comprises a drilling machine, a drill rod and a drill bit, wherein the drilling machine is arranged on the surface of the stratum and is connected with the drill bit through the drill rod, and the drill rod is detachably connected with the drill bit; the hole expanding device is used for carrying out back expansion on the guide hole, and the hole diameter is expanded so as to facilitate pipeline laying; the pipe pulling device is used for laying pipelines. In the trenchless horizontal directional drilling pipe laying construction device in the embodiment, a drilling machine is arranged to cooperate with a drill rod to drive a drill bit to perform drilling operation, the drill rod is detachably connected with the drill bit, and the drill bit is detached when the hole expanding device performs hole expanding operation; then connecting the reaming bit with one end of the drill rod; wherein the drill bit adopts detachable connected mode with the drilling rod, and the drilling apparatus of being convenient for is changed, has promoted the efficiency of pipe laying construction.

Description

Non-excavation horizontal directional drilling pipe laying construction device

Technical Field

The utility model relates to the technical field of building construction, in particular to a non-excavation horizontal directional drilling pipe laying construction device.

Background

The non-excavation construction refers to a construction technology for laying, replacing and repairing various underground pipelines by using various rock-soil drilling equipment and technical means under the condition of excavating on a tiny part of the earth surface in the modes of guiding, positioning drilling and the like, so that traffic is not obstructed, green lands and vegetation are not damaged, and the interference of the traditional excavation construction on the life of residents is solved. Construction pipelines are important parts in trenchless construction and are generally used for transporting liquids, gases, and the like.

The fixed mode that the drill bit adopted in the course of working of the construction pipeline among the prior art is single, and drilling apparatus changes the location process complicacy, and the inefficiency of pipe laying construction causes the error of the construction of drilling moreover great, seriously influences the whole scheme of laying of construction pipeline. Therefore, it is necessary to provide a pipe laying construction device for trenchless horizontal directional drilling to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a non-excavation horizontal directional drilling pipe laying construction device, which solves the problems that a drill bit in a pipe laying construction device in the prior art is single in fixing mode and the pipe laying construction efficiency is low by arranging a detachable drilling tool combination.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a non-excavation horizontal directional drilling pipe laying construction device is used for non-excavation directional drilling pipe laying construction, and comprises

The guiding device is used for detecting the underground pipeline within the construction path range;

the drilling device is used for performing drilling construction on the stratum to form a guide hole for laying a pipeline, and comprises a drilling machine, a drill rod and a drill bit, wherein the drilling machine is arranged on the surface of the stratum, the drilling machine is connected with the drill bit through the drill rod, and the drill rod is detachably connected with the drill bit;

the reaming device is used for back reaming the guide hole; and

a pipe pulling device for laying the pipeline;

wherein the reaming device comprises

The hole expanding drill bit is detachably connected with one end of the drill rod and is used for expanding the aperture of the guide hole;

the pull-back drill rod is detachably connected with the other end of the expanding drill bit, and the extending part of the other end of the pull-back drill rod is far away from one end of the drilling machine of the guide pipe and is used for pulling back the drill rod; and

and the rotary joint is arranged between the reaming bit and the pull-back drill rod and is used for adjusting the rotation direction of the pull-back drill rod.

In the present invention, the reamer bit comprises

The drill bit body is used for rotary reaming; and

the dragging piece is arranged at one end of the drill bit body, the drill bit body is connected with the rotary joint through the dragging piece, and a first connecting hole is formed in the dragging piece.

The rotary joint comprises a first connecting part connected with the dragging piece and a second connecting part connected with the pull-back drill rod, and the first connecting part is rotatably connected with the second connecting part;

wherein the first connecting part comprises two limiting parts which are oppositely arranged and formed to clamp the opening, the limiting parts are provided with second connecting holes corresponding to the first connecting holes,

the dragging piece is arranged in the clamping opening, and the dragging piece is connected with the first connecting piece portion through a bolt.

In the utility model, the second connecting part is provided with a connecting groove for connecting the first connecting part;

the first connecting part also comprises a rotating part which is arranged in the connecting groove, and the first connecting part is rotationally connected with the second connecting part through the rotating part;

one end of the rotating part extends out of the connecting groove, and one end of the rotating part is connected with the limiting part through a bolt.

In the present invention, the guide device includes:

the detector is connected with the drill bit and used for transmitting a radio signal;

and the ground receiver is arranged on the surface of the stratum, receives the radio signal transmitted by the detector and displays various parameters of the received radio signal.

In the utility model, the size of the opening is adjustable, one end of the limiting piece is provided with an adjusting rod, one end of the adjusting rod, which is close to the center of the opening, is provided with a limiting block,

the first connection portion further includes:

the fixing seat is fixedly connected with one end of the second connecting part, a limiting groove is formed in the fixing seat and used for accommodating the adjusting rod, and a stop block is arranged at an opening of the limiting groove; and

the elastic piece is arranged between the limiting block and the stop block and used for extruding the limiting block.

In the utility model, the two groups of limiting pieces and the fixed seat can be connected in an adjustable manner.

In the present invention, the fixing base includes:

the first fixing piece is fixedly connected with the second connecting part, the limiting groove is arranged on one side of the first fixing piece, which is far away from the first connecting part, and a first connecting hole is also formed in one side of the first fixing piece, which is far away from the first connecting part; and

a second fixing plate arranged on one side of the first fixing piece far away from the first connecting part and positioned between the two limiting parts, wherein the second fixing plate is provided with a second connecting hole matched with the first connecting hole,

the first fixing piece is fixedly connected with the second fixing plate through a fastening piece.

In the utility model, one end of the limiting part, which is far away from the opening, is also provided with a protection plate, and the protection plate structure is matched with the fixed seat outer ring structure.

In the utility model, the protection plate is of an arc-shaped structure, and the periphery of the fixed seat is provided with an avoidance notch for embedding the protection plate.

In the present invention, the tube drawing device comprises:

a pipe drawing head is connected with a pipeline; and

the single acting joint, the tube drawing head through the single acting joint with drilling rod one end is connected, the single acting joint is used for preventing pipeline and reamer bit from revolving together.

Compared with the prior art, the utility model has the beneficial effects that: in the trenchless horizontal directional drilling pipe laying construction device in the embodiment, a drilling machine is arranged to cooperate with a drill rod to drive a drill bit to perform drilling operation, the drill rod is detachably connected with the drill bit, and the drill bit is detached when the hole expanding device performs hole expanding operation; then, connecting the hole expanding drill bit with one end of the drill rod, and connecting the other end of the hole expanding drill bit with the pull-back drill rod through a rotary joint; wherein the drill bit adopts detachable connected mode with the drilling rod, and the drilling apparatus of being convenient for is changed, has promoted the efficiency of pipe laying construction.

In addition, this non-excavation horizontal directional drilling pipe laying construction equipment through design drilling combination apparatus, compares in the fixed drilling apparatus of traditional adoption, need not frequently carry out the change of drilling equipment, has reduced the error of the construction of drilling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding to some embodiments of the present invention.

Fig. 1 is a schematic structural view of a preferred embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention.

Fig. 2 is a schematic diagram showing a hole enlarging device in a preferred embodiment of the trenchless horizontal directional drilling pipe-laying construction device of the present invention.

Fig. 3 is a schematic structural view of a reaming device of a preferred embodiment of the trenchless horizontal directional drilling pipe-laying construction device of the utility model.

Fig. 4 is a schematic view of a rotary joint structure of a preferred embodiment of the trenchless horizontal directional drilling pipe laying construction apparatus of the present invention.

Fig. 5 is a schematic view of a rotary joint structure of a second embodiment of the trenchless horizontal directional drilling pipe laying construction apparatus of the present invention.

Fig. 6 is a schematic structural diagram of an initial position of an adapter of a second embodiment of the trenchless horizontal directional drilling pipe laying construction device.

Fig. 7 is a schematic structural diagram of an adapter pressing position of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction device of the present invention.

Fig. 8 is a schematic structural view of a first fixing member of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention.

Fig. 9 is a schematic diagram of a second fixing plate structure of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention.

First implementation reference numerals: the guiding device 11, the sonde 111, the surface receiver 112, the drilling device 12, the first drilling machine 121, the first drill rod 122, the drill bit 123, the reaming device 13, the reaming bit 131, the drill bit body 1311, the dragging piece 1312, the pullback drill rod 133, the rotary joint 134, the first connecting portion 1341, the limiting piece 13411, the rotating piece 13412, the second connecting portion 1342, and the connecting groove 13421.

Reference numerals of the second embodiment: the rotating joint 21, the first connecting portion 211, the limiting member 2111, the adjusting rod 2112, the limiting member 2113, the protection plate 2114, the fixed seat 2115, the first fixing member 21151, the limiting groove 21151a, the stopper 21151b, the first fixing hole 21151c, the second fixing plate 21152, the second fixing hole 21152a, the elastic member 21153, the avoiding notch 21154, and the second connecting portion 212.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the drawings, elements having similar structures are denoted by the same reference numerals.

The terms "first," "second," and the like in the terms of the utility model are used for descriptive purposes only and not for purposes of indication or implication relative importance, nor as a limitation on the order of precedence.

Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a preferred embodiment of the trenchless horizontal directional drilling and pipe-laying construction apparatus of the present invention, fig. 2 is a schematic structural diagram of a reaming apparatus of the preferred embodiment of the trenchless horizontal directional drilling and pipe-laying construction apparatus of the present invention, and fig. 3 is a schematic structural diagram of the reaming apparatus of the preferred embodiment of the trenchless horizontal directional drilling and pipe-laying construction apparatus of the present invention.

The following is a preferred embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus according to the present invention that can solve the above technical problems.

The utility model provides a preferable embodiment of the trenchless horizontal directional drilling pipe laying construction device, which comprises the following steps: a non-excavation horizontal directional drilling pipe laying construction device is used for non-excavation directional drilling pipe laying construction and comprises a guide device 11, a drilling device 12, a hole expanding device 13 and a pipe drawing device; wherein the guide device 11 detects underground pipelines within the range of the construction path; the drilling device 12 performs drilling construction on the stratum so as to form a guide hole for laying a pipeline, the drilling device 12 comprises a drilling machine 121, a drill rod 122 and a drill bit 123, the drilling machine 121 is arranged on the surface of the stratum, the drilling machine 121 is connected with the drill bit 123 through the drill rod 122, and the drill rod 122 is detachably connected with the drill bit 123; the hole expanding device 13 is used for back expanding the guide hole, and the hole diameter is expanded to facilitate the laying of a pipeline; the pipe pulling device is used for laying pipelines.

Wherein, reaming device 13 includes reaming bit 131, back-pull drill rod 133 and rotary joint 134. The hole expanding drill bit 131 is connected with one end of the drill rod 122, and the hole expanding drill bit 131 is used for expanding the aperture of the guide hole; the pull-back drill rod 133 is connected with the other end of the reaming bit 131, and the other end of the pull-back drill rod 133 extends out of one end, away from the drilling machine 121, of the guide pipe and is used for pulling back the drill rod 122; a rotary joint 134 is provided between the reamer bit 131 and the pullback rod 133, and the rotary joint 134 is used to adjust the rotation direction of the pullback rod 133.

In the trenchless horizontal directional drilling pipe laying construction device in the embodiment, the drilling machine is arranged to cooperate with the drill rod 122 to drive the drill bit 123 to perform drilling operation, the drill rod 122 is detachably connected with the drill bit 123, and the drill bit 123 is detached when the hole expanding device 13 performs hole expanding operation; then, the hole expanding drill bit 131 is connected with one end of the drill rod 122, and the other end of the hole expanding drill bit 131 is connected with the pull-back drill rod 133 through the rotary joint 134; wherein the drill bit adopts detachable connected mode with the drilling rod, and the drilling apparatus of being convenient for is changed, has promoted the efficiency of pipe laying construction.

Referring to fig. 1, the guiding device 11 in the present embodiment includes a probe 111 and a ground receiver 112; wherein the sonde 111 is connected to the drill bit 123 for transmitting radio signals; the ground receiver 112 is disposed on the surface of the formation, and the ground receiver 112 is used for receiving the radio signal transmitted by the detector 111 and displaying various parameters of the received radio signal.

Referring to fig. 4, fig. 4 is a schematic view of a rotary joint structure of a preferred embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention. The structure of reaming device 13 in this embodiment will be explained in detail:

in this embodiment, the reamer bit 131 includes a bit body 1311 and a drag 1312; wherein the bit body 1311 is used for rotary reaming; the dragging piece 1312 is arranged at one end of the drill bit body 1311, the drill bit body 1311 is connected with the rotary joint 134 through the dragging piece 1312, and a first connecting hole is formed in the dragging piece 1312.

The rotary joint 134 in this embodiment includes a first connection portion 1341 and a second connection portion 1342. One end of the first connecting part 1341 is connected to the dragging member 1312, one end of the second connecting part 1342 is connected to the pullback drill rod 133, and the first connecting part 1341 and the second connecting part 1342 are rotatably connected;

the first connection portion 1341 includes two opposite limiting members 13411 formed to clamp the opening, the limiting member 13411 is provided with a second connection hole corresponding to the first connection hole, the pulling member 1312 is disposed in the clamping opening, and the pulling member 1312 and the first connection portion are connected by a bolt.

In this embodiment, the second connection portion 1342 of the rotary joint 134 is provided with a connection groove 13421 for connecting the first connection portion 1341; the first connection portion 1341 further includes a rotation member 13412, the rotation member 13412 is disposed in the connection slot 13421, and the first connection portion 1341 is rotatably connected to the second connection portion 13242 through the rotation member 13412. One end of the rotating member 1312 is detachably connected to the limiting member 13411 through a bolt.

In addition, the tube drawing device in the embodiment comprises a tube drawing head and a single-action joint. Wherein the tube drawing head is connected with a pipeline; the pipe drawing head is connected with one end of the drill rod through the single-acting joint, the single-acting joint is used for preventing the pipeline and the hole expanding drill bit from rotating together, and the stability of the trenchless horizontal directional drilling pipe laying construction device in the process of drawing back the pipeline is improved.

The using method of the trenchless horizontal directional drilling pipe laying construction device of the embodiment is explained in detail as follows:

firstly, excavation and supporting of working pit and installation and in-place of drilling machine 121

1. And (5) excavating and supporting the working pit.

The size of the working pit at the inlet and the outlet is determined according to the field condition, the type of the pipeline, the pipe diameter, the material, the burial depth, the geological condition and the design parameters of the guide track, and the working pit is generally dug into a rectangular pit. When the depth is deeper, the stability of the pit wall in the excavation work must be considered, a corresponding supporting mode is adopted, and the overall rigidity, the stability and the supporting strength of the pit wall must be calculated through checking.

When considering the function of the pit, such as an outlet pit to be used for taking over work, the operation space of welding work needs to be considered; if the pipeline to be laid is of large diameter, the exit pit must be extended to a long trough suitable for straight back towing of the pipeline.

2. Installation and positioning of the drilling rig 121.

Before the drilling machine 121 enters a field, a working pit is dug at an earth entering point and an earth leaving point of a drilled hole, the drilling machine 121 can be placed after the working pit is dug, the placement of the drilling machine 121 mainly considers designing an earth entering angle of a drill rod 122, the angle and the direction of the erection of the drilling machine 121 are adjusted according to the designed earth entering angle of the drill rod 122, equipment is installed at the initial position of the extension of the central line of the production pipe, and the position of a machine frame is adjusted to be in accordance with the designed drilling axis. After the drilling machine 121 is placed, the drilling machine 121 needs to be anchored, the soil layer is hard and dry and can be used for a straight anchor rod, the soil layer is loose and can be anchored and positioned by adopting a concrete foundation or a caisson spiral anchor rod, and the anchoring capability of the drilling machine 121 reflects the capability of the drilling machine 121 to exert the power of the drilling machine during feeding and pulling-back construction. After the drilling machine 121 is in place, a proper drill bit 123 and a proper drilling tool combination are selected according to different soil layer conditions of a construction site, and the drilling tool combination is well checked and installed.

Secondly, the drilling device 12 drills holes according to the designed drilling track.

After the drilling machine 121 is started, trial operation is carried out, and drilling can be carried out after all parts of the equipment are determined to operate normally; when the first drill rod 122 drills into the earth, the drill rod is slightly pressed to slowly rotate to stabilize the position of the drill rod, the drill rod can drill behind the designed soil-entering angle, the drill hole continuously extends forwards under the auxiliary action of drilling liquid jet drilling, a mud motor is required to drill in a hard rock stratum, and the tail end of the drill rod 122 is provided with a bent joint to control the direction of the track.

When the pilot hole is drilled, the measurement frequency of the deflecting section is generally 0.5-1.0 m/time, the measurement frequency of the straight section is generally one time for each drill rod 122, when the position of the original underground pipeline, a key soil inlet and outlet point, a hole with a gradient requirement is drilled or the drilling track is adjusted, the measurement frequency is increased, the measurement data is compared with the design track, and the deviation is corrected at any time so as to confirm the direction to be drilled in the next section.

During drilling in the curved section, the thrust force should be adjusted according to the formation conditions to avoid over-bending of the drill pipe 122.

When the deflecting section is pushed in, the length of one-time pushing in is preferably smaller than 0.5-1.0m, the variable of the extended length vertex angle is observed, the variable of the vertex angle meets the requirement of the ultimate bending strength of the drill rod 122, and the drill is applied in sections, so that the strain of the extended length vertex angle is uniform.

And the track deviation error between two adjacent measuring points of the guide hole is not larger than the aperture of the final hole, and the deviation error is timely corrected when being found.

In the drilling process, the receiver receives and displays various parameters such as the facing angle of the inclined plane and the like, and synchronously displays the parameters on a remote sensing display of the drilling machine 121, an operator needs to master the conditions of the drill bit 123 and the drilling track in the hole according to the displayed conditions, and when the drilling track deviates from the original design track, the operator adjusts the direction of the inclined plane of the drill bit 123 to correct deviation of the inclined plane until the actual position of the drill bit 123 is the same as the design track of the drilling hole, so that the guide hole which is the same as the design track can be drilled.

When the drill bit 123 is exposed to the ground at the exit pit, it should be measured whether the actual unearthed point is within the allowable error range. If a portion of the borehole is out of tolerance, the drill rod 122 may be pulled back to re-drill the deviated portion of the borehole. When the unearthed site meets the requirements, the drill bit 123 and associated drilling tool are removed, and reaming and pullback is commenced.

And thirdly, drilling liquid.

The drilling fluid is typically drilling mud, and in trenchless directional drilling construction, the drilling fluid is used for carrying drill cuttings, stabilizing the hole wall, reducing the rotation torque and the pipe pulling resistance, cooling the drill bit 123 and the transmitting probe, performing jet drilling, and the like. The drilling liquid in the annular space between the pipeline and the hole wall has the functions of suspension and lubrication, and is beneficial to back dragging of the pipeline.

The drilling mud is pumped into the drill pipe 122 by a mud pump, is sprayed out from a nozzle of the drill bit 123 and then returns to the ground through an annular gap between the drill pipe 122 and the hole wall, and the mud returning from the drilling hole is treated by a mud sedimentation tank or mud purification equipment and then is returned to a mud tank or is mixed with new mud for use. The drilling fluid is a mixture of clear water, bentonite, a small amount of polymer and a treating agent. Bentonite is a commonly used mud material, which is a harmless mud material.

Fourthly, the reaming device 13 performs reaming operation.

After the pilot hole is formed, the drill bit 123 mounted at the front end of the drill rod 122 during pilot hole construction is detached at the exit pit, the hole expanding drill bit 131 and the rotary joint 134 are connected, the pull-back drill rod 133 is connected to the rear part of the rotary joint 134, and then the drill rod 133 is pulled back to perform hole expanding drilling construction. After the reamer bit 131 reaches the working pit on one side of the drilling machine 121, the reamer bit 131 and the rotary joint 134 are detached; then connecting the drill pipe 122 on the drilling machine 121 with the pull-back drill pipe 133; after connecting the drill pipe 122 in the exit working pit, another larger reamer bit and swivel 134 is connected; then connecting the drill rod for the second pullback to perform the second reaming and drilling, and performing the reciprocating reaming circularly until the requirement is met.

And fifthly, the pipe pulling device drags the pipeline back.

When the bore hole is enlarged to the required bore diameter, the finished pipe to be laid can be pulled into the hole filled with the slurry. The pipes are preferably all properly connected in advance to facilitate one-time pulling, and the strength and ring stiffness of the pipes must meet the load requirements at the design and construction stages. The situation of the stratum is complex, such as: the shrinkage of the drilled hole or the collapse of the hole wall may cause difficulties in the sectional drawing of the pipe. When the pipe is pulled back, the underreamer is connected to the drill pipe 122, and then the finished pipeline is connected with a single-action joint and a pipe pulling head, wherein the single-action joint has the function of preventing the pipeline from being twisted off together with the underreamer, so that the pipeline can be smoothly pulled back successfully.

The angle of entry of the pull-back line into the borehole should be substantially the same as the angle of entry of the pilot hole and the angle of emergence of the drill pipe 122, and the pull-back operation should be continued.

The connection mode of the pipe drawing head and the paved pipeline mainly adopts a welding mode for the steel pipe, and mainly adopts a pipe connector or a pipe clamping device for PVC, PE pipes and the like.

And sixthly, backfilling the working pit and cleaning the field.

After the back-drawing is completed, the tube head is pulled out by a length which is generally about 3% of the total length of the tube, and the two ends of the finished tube are blocked to prevent foreign matters from entering the tube. According to different purposes of the pull-back pipe, a test related to the pipe is also required to be carried out, after the test is qualified, on-site slurry, slag soil and waste are timely cleaned, and a compaction working pit is backfilled as required.

Referring to fig. 5, fig. 5 is a schematic view of a rotary joint structure of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention. A second embodiment of the rotary joint of the present invention is as follows:

the rotary joint 21 in the present embodiment includes a first connection portion 211 and a second connection portion 212. One end of the first connecting part 211 is connected with the dragging piece, one end of the second connecting part 212 is connected with the pull-back drill rod, and the first connecting part 211 is rotatably connected with the second connecting part 212; the first connection portion 211 includes two limiting members 2111 disposed opposite to each other and formed to clamp the opening, and the limiting members 2111 and the dragging member are connected by bolts. The size of the opening of the rotary joint 21 for clamping the reamer bit is adjustable, and the adaptability of the rotary joint 21 is improved.

Referring to fig. 6 and 7, fig. 6 is a schematic view of an initial position of an adapter of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus according to the present invention. Fig. 7 is a schematic structural diagram of an adapter pressing position of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction device of the present invention.

In this embodiment, the first connection portion 211 of the rotating joint 21 includes a limiting member 2111, a fixing seat 2115 and an elastic member 21153; an adjusting rod 2112 is arranged at one end of the limiting member 2111, and a limiting block 2113 is arranged at one end of the adjusting rod 2112 close to the center of the opening. The fixing seat 2115 is fixedly connected to one end of the second connecting portion 212, the fixing seat 2115 is provided with a limiting groove 21151a, the limiting groove 21151a is used for accommodating the adjusting rod 2112, and an opening of the limiting groove 21151a is provided with a stop 21151 b. Elastic member 21153 is disposed between stopper 2113 and stopper 21151b, and the elastic member is used to squeeze stopper 2113, which improves the stability of the connection between rotary joint 21 and the reamer bit.

Further, two sets of locating parts 2111 in this embodiment are all adjustable with fixing base 2115 and are connected, further promote the open-ended control range that can centre gripping reamer bit, have promoted rotary joint's in this embodiment practicality.

Referring to fig. 8 and 9, fig. 8 is a schematic structural view of a first fixing member of a second embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention, and fig. 9 is a schematic structural view of a second fixing member of the second embodiment of the trenchless horizontal directional drilling pipe-laying construction apparatus of the present invention.

The fixing seat 2115 in this embodiment includes a first fixing member 21151 and a second fixing plate 21152 which are assembled together; the first fixing piece 21151 is fixedly connected to the second connecting portion, the limiting groove 21151a is disposed on a side of the first fixing piece 21151 away from the first connecting portion 211, and a first fixing hole 21151c is further disposed on a side of the first fixing piece 21151 away from the first connecting portion 211; the second fixing plate 21152 is disposed on the first fixing element 21151 on a side away from the first connection portion 211, the second fixing plate 21152 is located between the two limiting elements 2111, the second fixing plate 21152 is provided with a second fixing hole 21152a matching with the first fixing hole 21151c, and the first fixing element 21151 is fixedly connected to the second fixing plate 21152 by a fastener.

In addition, in this embodiment, one end of the limiting part 2111, which is away from the opening, is further provided with a protection plate 2114, and the structure of the protection plate 2114 is matched with the structure of the outer ring of the fixing seat 2115.

Preferably, the protection plate 2114 in this embodiment is an arc-shaped structure, and an avoiding notch 21154 for embedding the protection plate 2114 is provided around the fixed seat 2115. The structural design improves the contact area between the fixed seat 2115 and the limiting part 2111, and improves the stability of the overall structure of the rotary joint 21.

The resilient member 21153 of the rotary joint 21 in this embodiment includes an initial position and a compressed position. The distance between two stoppers 2111 in the rotary joint 21 when the elastic member 21153 is in the initial position; is less than the distance between two stop members 2111 in the rotary joint 21 when the elastic member 21153 is in the pressed position.

When the dragging part of the fixed reamer bit is connected, the elastic part 21153 starts to be extruded and deformed from the initial position by relatively moving the two limiting parts 2111 away; when the opening distance between the two limiting pieces 2111 is greater than the width of the dragging piece of the reamer bit, the dragging piece of the reamer bit is placed in the opening between the two limiting pieces 2111, and the limiting pieces 2111 correspond to the connecting holes of the dragging piece; then, under the elastic recovery of the elastic part 21153, the two limit parts 2111 are driven to approach each other until the dragging part is clamped; and finally, the limiting part 2111 and the dragging part are fixedly connected through a fastening bolt.

The non-excavation horizontal directional drilling pipe laying construction device of this embodiment is on first basis, through setting up rotary joint 21 with adjustable centre gripping opening size, has promoted rotary joint 21's suitability, but the fixed not unidimensional reamer bit of connection has promoted non-excavation horizontal directional drilling pipe laying construction device's practicality.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A non-excavation horizontal directional drilling pipe laying construction device is used for non-excavation directional drilling pipe laying construction and is characterized by comprising

the drilling device is used for drilling the stratum to form a guide hole for laying a pipeline, and comprises a drilling machine, a drill rod and a drill bit, wherein the drilling machine is arranged on the surface of the stratum, the drilling machine is connected with the drill bit through the drill rod, and the drill rod is detachably connected with the drill bit;

the reaming device is used for back reaming the guide hole; and

a pipe pulling device for laying the pipeline;

wherein the reaming device comprises

the other end of the pull-back drill rod extends to the end, far away from the drilling machine, of the guide hole and is used for pulling back the drill rod; and

2. The trenchless horizontal directional drilling pipelaying apparatus of claim 1, wherein the reamer bit comprises

The drill bit body is used for rotary reaming; and

the dragging piece is arranged at one end of the drill bit body, the drill bit body is connected with the rotary joint through the dragging piece, and a first connecting hole is formed in the dragging piece;

3. The trenchless horizontal directional drilling pipelaying apparatus of claim 2, wherein the second connection portion is provided with a connection groove for connecting the first connection portion;

4. The trenchless horizontal directional drilling pipelaying apparatus of claim 1, wherein the guide means comprises:

5. The trenchless horizontal directional drilling and pipe-laying construction device of claim 2, wherein the opening is adjustable in size, an adjusting rod is arranged at one end of the limiting member, a limiting block is arranged at one end of the adjusting rod close to the center of the opening,

the first connection portion further includes:

6. The trenchless horizontal directional drilling and pipe laying construction device of claim 5, wherein the two sets of limiting members are adjustably connected with the fixing base.

7. The trenchless horizontal directional drilling pipelaying construction device of claim 6, wherein the fixing base comprises:

8. The trenchless horizontal directional drilling and pipe laying construction device of claim 5, wherein a protection plate is further arranged at one end of the limiting member away from the opening, and the protection plate is matched with the outer ring structure of the fixed seat.

9. The trenchless horizontal directional drilling and pipe laying construction device of claim 8, wherein the protection plate is of an arc-shaped structure, and an avoidance gap for embedding the protection plate is arranged on the periphery of the fixing seat.

10. The trenchless horizontal directional drilling pipe-laying construction apparatus of claim 1, wherein the pipe-pulling device comprises:

a pipe drawing head is connected with a pipeline; and