CN111622771B - Top-pull drill pipe and construction equipment comprising same - Google Patents
Top-pull drill pipe and construction equipment comprising same Download PDFInfo
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- CN111622771B CN111622771B CN202010607480.3A CN202010607480A CN111622771B CN 111622771 B CN111622771 B CN 111622771B CN 202010607480 A CN202010607480 A CN 202010607480A CN 111622771 B CN111622771 B CN 111622771B
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 238000005553 drilling Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 238000009412 basement excavation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a top-pulling drill pipe which comprises a reverse drill bit, a front end fixing cap, a force transmission short rod, a rear anchor top plate and a locking device, wherein the front end fixing cap is fixedly connected with the front end of the reverse drill bit; the rear side of the reverse drill bit is provided with a hinged joint; the front end fixing cap comprises a front end fixing part connected with the hinged joint of the reverse drill bit and a rear end fixing part positioned in the middle of the rear end; the force transmission short rod comprises a short rod front fixing part and a short rod rear fixing part, the short rod front fixing part is used for being connected with the rear end fixing part of the front end fixing cap, the short rod rear fixing part is located at the rear end of the force transmission short rod, and the short rod rear fixing part is used for being connected with a short rod front fixing part of the other force transmission short rod or connected with a locking device; the locking device locks the rear anchor top plate to the force transmission short rod, the locking device generates locking force facing to the front end fixing cap direction on the rear anchor top plate, and an accommodating space for accommodating the self-locking socket pipe is formed between the rear anchor top plate and the front end fixing cap. The scheme disclosed by the invention achieves the effects of high construction precision, short construction period and small construction operation area.
Description
Technical Field
The utility model relates to a pipeline construction field especially relates to top and draws construction equipment.
Background
The construction of underground pipelines in China mainly adopts three construction processes of open excavation laying, traction pipes and jacking pipes. However, in the development and construction of cities, the rain and sewage flow-distribution drainage is the trend of city development planning, the transformation of the rain and sewage flow-distribution system in old urban areas into the flow-distribution system is imperative, and the old urban areas are developed for many years, so that the urban planning is not standard, the laneways are narrow and small in length and width, various underground pipelines are distributed, the geological conditions are complex, the road traffic conditions are nervous, and the ground surface working surface is not enough. The three processes have the problem of high requirements on traffic or construction environment. The open excavation construction process is simple, the construction speed is high, but the construction causes great damage to the road surface, the traffic influence time is long, and the mechanical excavation also requires the road surface width and cannot be lower than the rotation radius of the excavator; the construction of the traction pipe has the advantages of small influence on traffic, small damage to road surfaces and the like, but the elevation control of a construction pipeline is poor, the pipeline trend is easy to bend and deform due to poor geological conditions, and the length requirement of a bidirectional deflecting section causes that the construction of the traction pipe cannot be applied to a narrow and short roadway; the pipe-jacking construction process has the advantages of large construction depth, small environmental damage influence and the like, but the size of a pipe-jacking well is large, construction points need to be used for detailed exploration and relocation of underground pipelines, and a working well needs to be provided with site arrangement of construction equipment, materials and the like, so that the occupied area of the pipe-jacking well enclosure is large, the requirements on the site are large, and the influence on road traffic is also large. Therefore, a new construction process needs to be developed so as to be more suitable for construction in narrow working faces such as old and old urban areas and the like, and also meet the requirements of design and standard.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a roof-pull construction apparatus to achieve the effects of high construction precision, short construction period, and small construction work area. The purpose of the disclosure is realized by the following scheme:
a top pull drill pipe comprises a reverse drill bit, a front end fixing cap, a force transmission short rod, a rear anchor top plate and a locking device; a hinged joint is arranged at the rear side of the reverse drill bit; the front end fixing cap comprises a front end fixing part connected with the hinged joint of the reverse drill bit and a rear end fixing part positioned in the middle of the rear end; the force transmission short rod comprises a short rod front fixing part and a short rod rear fixing part, the short rod front fixing part is used for being connected with the rear end fixing part of the front end fixing cap, the short rod rear fixing part is located at the rear end of the force transmission short rod, and the short rod rear fixing part is used for being connected with a short rod front fixing part of another force transmission short rod or connected with the locking device; the locking device locks the rear anchor top plate to the force transmission short rod, the locking device generates locking force towards the direction of the front end fixing cap on the rear anchor top plate, and an accommodating space for accommodating a self-locking socket pipe is formed between the rear anchor top plate and the front end fixing cap.
Further, the locking device comprises a rear anchor short rod and a hydraulic jack; the rear anchor short rod comprises a rear anchor short rod front fixing part and a rear anchor short rod rear fixing part, wherein the rear anchor short rod front fixing part is used for being connected with the short rod rear fixing part, and the rear anchor short rod rear fixing part is used for being connected with the hydraulic jack; the hydraulic jack generates a trend force towards the front end fixing cap towards the rear anchor top plate so as to fix the self-locking socket pipe in the accommodating space.
Furthermore, a through hole is formed in the middle of the rear anchor top plate, and the rear anchor short rod passes through the through hole.
Furthermore, the hydraulic jack comprises two hydraulic cylinder bodies arranged in parallel and a piston shaft positioned in the middle of the hydraulic cylinder bodies; the two hydraulic cylinder bodies are fixedly connected through a middle connecting piece, and the piston shaft is also connected with a fixing plate used for abutting against the rear anchor top plate; the middle connecting piece is also suitable for being fixed on a rear fixing part of the rear anchor short rod.
Furthermore, the middle connecting piece comprises a front connecting piece and a rear connecting piece, and the lower part of the front connecting piece comprises a front connecting plate provided with a front lap joint groove; the rear connecting piece comprises a rear connecting plate provided with a rear lap joint groove; the rear fixing part of the rear anchor short rod is a short shaft provided with a plurality of clamping rings, and the short shaft is divided into a plurality of clamping grooves by the clamping rings; the width of the clamping groove is greater than or equal to the thickness of the front connecting plate and the rear connecting plate; the distance between the front connecting plate and the rear connecting plate is equal to the distance between the plurality of clamping grooves, so that the front lapping groove and the rear lapping groove are separated by the plurality of clamping grooves and simultaneously enter the clamping grooves.
Furthermore, the hydraulic jack also comprises a front hydraulic pipe and a rear hydraulic pipe, the front hydraulic pipe is simultaneously connected with the front cavities of the two hydraulic cylinders, and the rear hydraulic pipe is simultaneously connected with the rear cavities of the two hydraulic cylinders.
Further, the front part of the front end fixing cap is conical.
Furthermore, the rear part of the front end fixing cap is provided with an annular groove, and the annular groove is suitable for being inserted into the self-locking socket pipe.
Further, the short rod front fixing part is in threaded connection with the front end fixing cap rear end fixing part, and the short rod rear fixing part is in threaded connection with the other short rod front fixing part or the rear anchor short rod front fixing part.
The construction equipment comprises a directional drilling machine, a top-pull drill rod, a guide drill bit and the top-pull drill pipe, wherein one end of the top-pull drill rod is connected with the directional drilling machine, and the other end of the top-pull drill rod is connected with the guide drill bit or the top-pull drill pipe.
Compared with the prior art, the present disclosure has the advantages that: the utility model provides a top drill pipe, it includes the biography power quarter butt, through connecting the biography power quarter butt constantly and cup jointing auto-lock socket pipe on the biography power quarter butt, can utilize the biography power quarter butt to fix arbitrary section auto-lock socket pipe on top drill pipe. And the force transmission short rod is a rigid short rod, and the force transmission short rod fixes the advancing direction of the self-locking socket pipe in the advancing process of the reverse drill bit. And because the locking device generates locking force towards the direction of the front end fixing cap on the rear anchor top plate at the rear parts of the force transmission short rods, the extrusion force to the self-locking socket pipe is formed, and in the advancing process, the advancing power of the rear anchor top plate is provided by the rear anchor top plate, so that the self-locking socket pipe is prevented from deviating from the advancing direction, and the construction precision is effectively improved. And because the rear side of the force transmission short rod adopts a disassembly structure, in the operation process, one section of self-locking socket pipe can enter the hole along with the reverse drill bit, after the section of self-locking socket pipe completely enters, the locking device is disassembled, and the force transmission short rod and the self-locking socket pipe are installed again, so that the self-locking socket pipe can be completely inserted into the hole drilled by the reverse drill bit in a smaller space, and the construction operation area is reduced. The power for the self-locking socket pipe to enter is mainly provided by a machine, and the labor intensity is also reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a schematic representation of the construction of a top pull drill pipe of the present disclosure;
FIG. 2 is an exploded view of the top pull drill pipe of FIG. 1;
FIG. 3 is a schematic view of the top pull drill pipe assembly of FIG. 1;
FIG. 4 is a schematic view of the rear anchor roof of the pull-up drill pipe of FIG. 2;
FIG. 5 is a schematic view of the self-locking socket pipe of FIG. 3;
FIG. 6 is a schematic axial side view of the hydraulic jack of FIG. 2 pulling the drill pipe;
FIG. 7 is a schematic second axial side view of the hydraulic jack for pulling the drill pipe of FIG. 2;
FIG. 8 is a schematic view of the rear anchor stub of the pull-top drill pipe of FIG. 2;
fig. 9 is a drawing of a top pull drill pipe construction process of the present disclosure.
Wherein: 1. a directional drilling machine; 2. pulling the drill rod; 31. a reverse drill bit; 32. a cap is fixed at the front end; 33. a force transmission short rod; 34. a rear anchor roof; 341. a plate body; 342. a reinforcing rib plate; 343. a connecting through hole; 344. a limiting table; 35. a rear anchor stub; 351. a minor axis; 352. a snap ring; 353. a card slot; 36. a hydraulic jack; 361. a hydraulic cylinder body; 362. a piston shaft; 363. a fixing plate; 364. a rear connector; 3641. a rear connecting plate; 3642. a rear lap joint groove; 365. a front connector; 3651. a front connecting plate; 3652. a front lap joint groove; 366. a rear hydraulic pipe; 367. a front hydraulic pipe; 4. self-locking socket pipes; 41. the head end of the socket pipe is self-locked; 42. self-locking the tail end of the socket pipe; 200. and (5) constructing an operation well.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, the present disclosure provides a construction apparatus including a directional drilling machine 1, a pull-top drill rod 2, a pull-top drill pipe, and a pilot bit (not shown). One end of the top pull drill rod 2 is connected with the directional drilling machine 1. The other end of the top pull drill rod 2 is of a detachable structure, and a top pull drill pipe or a guide drill bit can be selectively installed according to different procedures. The structure for installing the top-pulling drill pipe is shown in fig. 1, and a scheme for replacing the top-pulling drill pipe by a pilot bit can be easily found by those skilled in the art. The directional drilling machine 1 is used for providing rotary power of a top-pull drill pipe or a guide drill bit, the top-pull drill rod 2 has certain flexibility and can be bent to a certain degree according to a set path, and the rotary power of the directional drilling machine 1 is transmitted to the top-pull drill pipe or the guide drill bit. The directional drilling machine 1 is preferably arranged on a trolley, and in the process of driving the directional drilling machine 1, the trolley is driven to advance simultaneously, so that tension can be generated on the top-pull drill pipe, the top-pull drill pipe can advance along a soil layer through which the top-pull drill pipe 2 passes, and drilling and arrangement of the self-locking socket pipe 4 are completed. It should be noted that, in order to reduce the influence of the construction on the environment, a plurality of construction wells 200 with a smaller wellhead area are generally used in combination, and the construction wells 200 are distributed in the direction through which the top-pull drill rod 2 passes, that is, in the direction in which the self-locking socket pipe 4 needs to be arranged. The top pull drill rod 2 needs to guide the top pull drill pipe to arrange the self-locking socket pipe 4 between the two construction operation wells 200. The cross-sectional area of the construction work well 200 is much smaller than the distance between two construction work wells 200, and therefore it is a technical difficulty in the art how to conveniently, automatically and accurately arrange the longer spliced self-locking socket pipe 4 between two construction work wells 200. The present disclosure provides a pull-top drill pipe to solve the above technical problems.
Referring to fig. 2, the top-pull drill pipe of the present disclosure includes a back bit 31, a front end fixing cap 32, a force-transmitting short rod 33, a rear anchor top plate 34, and a locking device.
The front end of the reverse drill bit 31 is used for being connected with the top pull drill rod 2, the top pull drill rod 2 transmits the rotation power of the directional drilling machine 1 to the reverse drill bit 31, and the top pull drill rod 2 provides forward trend force for the reverse drill bit 31, so that the reverse drill bit 31 completes reaming work or digs a hole channel provided with the self-locking socket pipe 4. The rear side of the counter bit 31 is provided with a hinge joint. The joint is adapted to be connected to a front end fixing cap 32. The articulated joint is rotatably connected to the bit body of the counter bit 31, so that the pull-top drill pipe can be rotated without following the rotation of the bit body after the pull-top drill pipe is connected.
The front end fixing cap 32 includes a front end fixing portion connected to the hinge of the reverse drill 31 and a rear end fixing portion located at the middle of the rear end. The front end fixing cap 32 mainly functions to fix the self-locking socket pipe 4 together with the rear anchor top plate 34. Thus, the front end cap 32 has a shape including, but not limited to, a tapered shape, a circular arc shape, and a flat plate shape. However, in consideration of soft soil generated during the rotation of the counter bit 31, it is preferable to use a tapered housing in order to reduce the advancing resistance of the push-pull rotary pipe so as to expel the soft soil to both sides. The middle part of the front end fixing cap 32 is fixed with a short shaft which is used for connecting with the force transmission short rod 33, and in order to avoid the short shaft from bending, the inside of the front end fixing cap 32 also comprises a positioning rib plate which is used for positioning the short shaft. The rear part of the front end fixing cap 32 is provided with an annular groove which is suitable for being inserted into the self-locking socket pipe 4, so that the axial line of the self-locking socket pipe 4 is basically consistent with the length direction of the force transmission short rod 33.
Due to the complexity of the ground, there may be relatively hard structures such as rocks, bumps, etc. in the tunnel excavated by the backhoe bit 31. If the self-locking socket pipes 4 cannot be connected rigidly, and the propelling part is at the front end, the self-locking socket pipes 4 are separated from each other or the advancing direction of the self-locking socket pipes 4 is changed due to the fact that the self-locking socket pipes 4 are broken by gravels, bulges and other hard structures.
The present disclosure uses a force-transmitting stub 33, a front end fixing cap 32, and a rear anchor top plate 34 to form a rigid unitary body. The force transmission short rod 33 comprises a short rod front fixing part and a short rod rear fixing part, wherein the short rod front fixing part is used for being connected with the rear end fixing part of the front end fixing cap 32, and the short rod rear fixing part is located at the rear end of the force transmission short rod 33, so that the self-locking socket pipes 4 which are connected together are guaranteed to be distributed along a straight line. And this disclosure has adopted the back anchor roof 34 to provide the power that advances of self-locking socket pipe 4, when meetting comparatively hard obstacles such as rubble, arch, still can be along straight line distribution self-locking socket pipe 4, has improved the installation accuracy of self-locking socket pipe 4.
In the application process, the number of the force transmission short rods 33 to be connected can be selected according to the size of the construction operation well 200 and the construction progress. For example, in the initial stage, the hole passage enlarged by the reverse drill 31 needs to be accessed, two force transmission short rods 33 can be connected end to end, and the self-locking socket pipe 4 is sleeved on the force transmission short rods 33 connected end to end. And the self-locking socket pipe 4 is fixed in the space defined by the rear anchor top plate 34 and the front end fixing cap 32 by using the rear anchor top plate 34, so that a structure (shown in figure 3) suitable for following the forward movement of the reverse drill 31 is formed. After the self-locking socket pipe 4 completely enters the hole dug by the reverse drill bit 31, a plurality of force transmission short rods 33 can be added again, and the other self-locking socket pipe 4 is sleeved on the added force transmission short rods 33 again. In a preferred embodiment, the force transmission short rod 33 and the self-locking socket pipe 4 have the same length, so that the difficulty in matching the self-locking socket pipe 4 and the force transmission short rod 33 in the length direction is reduced. The technical purpose of convenient installation is achieved.
Referring to fig. 4, the rear anchor top 34 includes a plate body 341, a reinforcing rib 342, a connecting through hole 343, and a stopper 344. The side of the plate body 341 facing the self-locking socket pipe 4 is provided with an annular limiting table 344, and the limiting table 344 can be inserted into the inner hole of the self-locking socket pipe 4 and can position the inner hole. The back of the plate body 341 away from the self-locking socket pipe 4 is further provided with a reinforcing rib plate 342 to increase the overall rigidity of the rear anchor roof 34. The middle part of the plate body 341 is provided with a connecting through hole 343 for passing through the force transmission short rod 33 or the rear anchor short rod 35.
Referring to fig. 5, a self-locking socket pipe 4 is shown connected end to end. According to the attached drawings, the inner wall surface of the head end 41 of the self-locking socket pipe comprises a tooth-shaped hook, and the outer wall surface of the tail end 42 of the self-locking socket pipe comprises a tooth-shaped hook. The self-locking socket pipes connected end to end are extruded and installed by the toothed buckles. Meanwhile, the annular groove of the front end fixing cap 32 is matched with the toothed hook buckle at the head end 41 of the self-locking socket pipe, and the limit table 344 of the rear anchor top plate 34 is matched with the toothed hook buckle at the tail end 42 of the self-locking socket pipe, so that the friction force can be increased, and the self-locking socket pipe 4 is not separated from the rear anchor top plate 34 and the front end fixing cap 32.
The locking device locks the rear anchor top plate 34 to the force transmission short rod 33, and the locking device generates a locking force to the rear anchor top plate 34 in a direction facing the front end fixing cap 32. The locking means includes, but is not limited to, a lock nut, a quick lock structure, etc. In the operation process, one section of the self-locking socket pipe 4 can enter the hole along with the reverse drill bit 31, after the section of the self-locking socket pipe 4 completely enters the hole, the locking device is detached, and the force transmission short rod 33 and the self-locking socket pipe 4 are installed again, so that the self-locking socket pipe 4 can be completely inserted into the hole drilled by the reverse drill bit 31 in a small space, and the construction operation area is reduced.
Referring to fig. 6-7, the present disclosure provides a specific structure of a locking device in order to further improve the stability and rapidity of locking. The locking device comprises a rear anchor bar 35 and a hydraulic jack 36. The rear anchor short rod 35 comprises a rear anchor short rod front fixing part connected with the short rod rear fixing part and a rear anchor short rod rear fixing part connected with the hydraulic jack 36; the hydraulic jack 36 generates a biasing force to the rear anchor plate 34 toward the front end fixing cap 32. Since the rear anchor bar 35 is fixedly connected to the force transmission bar 33, the relative distance between the rear anchor bar 35 and the force transmission bar 33 is fixed. And a mounting groove for clamping the hydraulic jack 36 is further arranged on the rear anchor short rod 35, so that the positions of the hydraulic jack 36 and the force transmission short rod 33 are relatively fixed, and after the hydraulic jack 36 is started, tension acting on the rear anchor top plate 34 and the mounting groove is generated, so that the self-locking socket pipe 4 is fixed on the top-pulling drill pipe.
In order to further ensure the stability of the self-locking socket pipe 4, the hydraulic jack 36 includes two cylinder bodies 361 arranged in parallel, and a piston shaft 362 located in the middle of the cylinder bodies 361. The two hydraulic cylinder bodies 361 are fixedly connected through a middle connecting piece, and the piston shaft 362 is further connected with a fixing plate 363 for abutting against the rear anchor top plate 34. If one hydraulic cylinder is adopted, in the fixing process, the acting force of the hydraulic cylinder needs to be ensured to be positioned on the geometric center of the rear anchor top plate 34 as much as possible, otherwise, a turning moment is easily generated on the rear anchor top plate 34, and the connected rear anchor top plate 34 and the self-locking socket pipe 4 are deformed. After the two hydraulic cylinders are adopted, the two hydraulic cylinders can be distributed on two sides of the geometric center of the rear anchor top plate 34, and the moments between the two hydraulic cylinders are balanced with each other, so that the overturning moment cannot be generated on the rear anchor top plate 34. The construction stability is guaranteed. Meanwhile, the middle connecting piece can be used as a fixing part of the hydraulic jack 36 and the rear anchor short rod 35, and the two hydraulic cylinders are distributed on two sides of the rear anchor short rod 35, so that interference of the rear anchor short rod 35 on installation of the hydraulic cylinders can be effectively avoided. Specifically, the middle connecting piece comprises a front connecting piece 365 and a rear connecting piece 364, and the lower part of the front connecting piece 365 comprises a front connecting plate 3651 provided with a front lap joint groove 3652; the rear connector 364 includes a rear connecting plate 3641 having a rear overlapping groove 3642. The rear anchor rod rear fixing portion is a short shaft 351 (fig. 8) provided with a plurality of snap rings 352. The snap rings 352 divide the short shaft 351 into a plurality of clamping grooves 353, and the width of each clamping groove 353 is greater than or equal to the thickness of the front connecting plate 3651 and the thickness of the rear connecting plate 3641. The distance between the front connecting plate 3651 and the rear connecting plate 3641 is equal to the distance between the plurality of slots 353, so that the front overlapping groove 3652 and the rear overlapping groove 3642 enter the slots 353 at intervals of the plurality of slots 353. Therefore, in the using process, the hydraulic jack 36 is only required to be placed in the clamping groove 353 corresponding to the rear anchor short rod, the rear anchor top plate 34 can be locked by starting the hydraulic cylinder, the piston shaft 362 of the hydraulic cylinder is driven to return, and the disassembly is completed, so that the working efficiency is improved. The hydraulic jack 36 further comprises a front hydraulic pipe 367 and a rear hydraulic pipe 366, wherein the front hydraulic pipe 367 is connected with the front cavities of the two hydraulic cylinders, and the rear hydraulic pipe 366 is connected with the rear cavities of the two hydraulic cylinders. The two hydraulic cylinders can be simultaneously powered by a unified hydraulic source.
It is noted that the short rod front fixing part is screw-coupled with the rear end fixing part of the front end fixing cap 32, and the short rod rear fixing part is screw-coupled with another short rod front fixing part or a rear anchor short rod front fixing part.
Referring to fig. 1 and 9, the operation of the top pull pipe construction equipment is shown. Firstly, drilling according to the direction of a pipeline to be arranged by using a guide drill bit, detaching the guide drill bit after the guide drill bit protrudes from a concrete top pipe wellhead, connecting a reverse drill bit 31 to a top pull drill rod 2, driving a directional drilling machine 1 and the reverse drill bit 31, and reversely reaming. After reaming to a certain depth, the front end fixing cap 32, a proper number of force transmission short rods 33, a rear anchor top plate 34, a proper number of self-locking socket pipes 4, a hydraulic jack 36 and the like are installed at the rear part of the reverse drill bit 31. And starting the hydraulic jack 36 to lock the self-locking socket pipe 4. The reverse drill 31 is started to drive the self-locking socket pipe 4 to advance for a certain distance. And (3) reversely starting the hydraulic jack 36, detaching the rear anchor short rod 35 and the rear anchor top plate 34, and connecting the force transmission short rod 33 and the self-locking socket pipe 4 again. The above advancing process is repeated until the self-locking socket pipe 4 between the two construction work wells 200 is arranged. And disassembling the top pull drill pipe, and splicing and installing in the process of top pull drilling of the next section. Therefore, the effects of high construction precision, short construction period and small construction operation area are achieved.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (9)
1. A pull-top drill pipe, comprising: comprises a reverse drill bit, a front end fixing cap, a force transmission short rod, a rear anchor top plate and a locking device;
a hinged joint is arranged at the rear side of the reverse drill bit;
the front end fixing cap comprises a front end fixing part connected with the hinged joint of the reverse drill bit and a rear end fixing part positioned in the middle of the rear end;
the force transmission short rod comprises a short rod front fixing part and a short rod rear fixing part, the short rod front fixing part is used for being connected with the rear end fixing part of the front end fixing cap, the short rod rear fixing part is located at the rear end of the force transmission short rod, and the short rod rear fixing part is used for being connected with a short rod front fixing part of another force transmission short rod or connected with the locking device;
the locking device locks the rear anchor top plate to the force transmission short rod, the locking device generates locking force towards the direction of the front end fixing cap on the rear anchor top plate, and an accommodating space for accommodating a self-locking socket pipe is formed between the rear anchor top plate and the front end fixing cap; the locking device comprises a rear anchor short rod and a hydraulic jack;
the rear anchor short rod comprises a rear anchor short rod front fixing part and a rear anchor short rod rear fixing part, wherein the rear anchor short rod front fixing part is used for being connected with the short rod rear fixing part, and the rear anchor short rod rear fixing part is used for being connected with the hydraulic jack;
the hydraulic jack generates a trend force towards the front end fixing cap towards the rear anchor top plate so as to fix the self-locking socket pipe in the accommodating space.
2. A top pull drill pipe as defined in claim 1, wherein: the middle part of the rear anchor top plate is provided with a through hole, and the rear anchor short rod passes through the through hole.
3. A top pull drill pipe as defined in claim 1, wherein: the hydraulic jack comprises two hydraulic cylinder bodies arranged in parallel and a piston shaft positioned in the middle of the hydraulic cylinder bodies; the two hydraulic cylinder bodies are fixedly connected through a middle connecting piece, and the piston shaft is also connected with a fixing plate used for abutting against the rear anchor top plate; the middle connecting piece is also suitable for being fixed on a rear fixing part of the rear anchor short rod.
4. A top pull drill pipe as defined in claim 3, wherein: the middle connecting piece comprises a front connecting piece and a rear connecting piece, and the lower part of the front connecting piece comprises a front connecting plate provided with a front overlapping groove; the rear connecting piece comprises a rear connecting plate provided with a rear lap joint groove;
the rear fixing part of the rear anchor short rod is a short shaft provided with a plurality of clamping rings, and the short shaft is divided into a plurality of clamping grooves by the clamping rings;
the width of the clamping groove is greater than or equal to the thickness of the front connecting plate and the rear connecting plate; the distance between the front connecting plate and the rear connecting plate is equal to the distance between the plurality of clamping grooves, so that the front lapping groove and the rear lapping groove are separated by the plurality of clamping grooves and simultaneously enter the clamping grooves.
5. A roof drill pipe as set forth in any of claims 3-4, wherein: the hydraulic jack further comprises a front hydraulic pipe and a rear hydraulic pipe, the front hydraulic pipe is connected with the front cavities of the two hydraulic cylinders, and the rear hydraulic pipe is connected with the rear cavities of the two hydraulic cylinders.
6. A roof drill pipe as claimed in any one of claims 1 to 4, wherein: the front part of the front end fixing cap is conical.
7. A roof drill pipe as claimed in any one of claims 1 to 4, wherein: the rear part of the front end fixing cap is provided with an annular groove, and the annular groove is suitable for being inserted into the self-locking socket pipe.
8. A roof drill pipe as claimed in any one of claims 1 to 4, wherein: the front short rod fixing part is in threaded connection with the rear end fixing part of the front end fixing cap, and the rear short rod fixing part is in threaded connection with the front short rod fixing part or the rear anchor short rod fixing part.
9. The utility model provides a construction equipment, includes directional drilling machine, top and draws drilling rod and pilot bit, its characterized in that: the top-pull drill pipe is further comprised in any one of claims 1 to 8, one end of the top-pull drill pipe is connected to the directional drilling machine, and the other end of the top-pull drill pipe is connected to the pilot bit or the top-pull drill pipe.
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| CN202010607480.3A CN111622771B (en) | 2020-06-30 | 2020-06-30 | Top-pull drill pipe and construction equipment comprising same |
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| CN111622771B true CN111622771B (en) | 2021-01-26 |
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| CN116697138B (en) * | 2023-08-08 | 2023-10-27 | 广东大禹水利建设有限公司 | Top-pulling combined non-excavation hydraulic engineering drainage pipeline construction method |
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