CN105239565A - Long spiral hydraulic supporting and expanding drilling tool - Google Patents
Long spiral hydraulic supporting and expanding drilling tool Download PDFInfo
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- CN105239565A CN105239565A CN201510551538.6A CN201510551538A CN105239565A CN 105239565 A CN105239565 A CN 105239565A CN 201510551538 A CN201510551538 A CN 201510551538A CN 105239565 A CN105239565 A CN 105239565A
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Abstract
The invention discloses a long spiral hydraulic supporting and expanding drilling tool and belongs to the technical field of drilling tool structures. The drilling tool comprises a drill rod, a drill bit, a multipath steering gear, a hollow oil cylinder, a high-pressure water pump and a supporting and expanding device assembly. The drill rod is composed of a hollow inner pipe and an outer pipe provided with spiral blades. An installing space of the supporting and expanding device assembly is reserved in the lower middle section of the outer pipe provided with the spiral blades. The multipath steering gear and the drill bit are installed at the two ends of the drilling tool respectively. A pipeline of the high-pressure water pump and a pipeline of the hollow oil cylinder are installed inside the drill rod. The supporting and expanding device assembly is installed between the outer pipe provided with the spiral blades and a core pipe. When the supporting and expanding device assembly is in a closed state, a continuous spiral structure is formed by spiral pieces on the outer peripheral surface of the supporting and expanding device assembly and spiral pieces on the outer peripheral surface of the outer pipe provided with the spiral blades; when the supporting and expanding device assembly is in an open state, the supporting and expanding device assembly unfolds gradually under the action of the hollow oil cylinder, and a closed supporting and expanding structure is formed. According to the long spiral hydraulic supporting and expanding drilling tool, a long spiral supporting and expanding disc formation process is achieved in a real sense, and a long spiral construction process in an original state is reserved.
Description
Technical field
Invention relates to a kind of drilling tool, is specifically related to a kind of long spire hydraulic supporting expanding drilling tool, belongs to drilling tool structure technical field.
Background technology
Long-spiral drilling machine is the plant equipment that building field is conventional, the recoverable amount of current national long-spiral drilling machine nearly ten thousand, but still continue to use the drilling tool form of the twentieth century thirties, the rig of current use is that type increases, never there is change in profile and construction method, in order to make, long-spiral drilling machine fundamentally realizes energy-saving and environmental protection, efficiently, fully excavate its potential use value, we have developed long spire hydraulic supporting expanding drilling tool.
Also once similar drilling tool was there is, at present, from only 2 examples that interrelated data is inquired about in the engineering practice of national long-spiral drilling machine, 1. application number 200910064004.5 denomination of invention long spiral support disk pile, this invention introduce it can pore-forming, to expand, pour into 3 procedure integrations and complete.2. application number 201510085938.2 denomination of invention is a kind of construction equipment of squeezed different in nature stake, it indicates method in invention is miniature long spire extruded and extended pile, practical work process is short spiral, feature is that squeezed part just forms three road tongues in the external side of shape in drilling tool lifting process, to increase side resistance.
Several machine engineering methods, all beyond long spire engineering method category, just simply to combine by above two kinds of techniques, are being labeled as the squeezed technique of long spire nominally, below respectively by the defect of two kinds of engineering methods and can not the analysis of causes of spread as follows:
The main frame that long spiral support disk pile adopts is long-spiral drilling machine, and drilling tool adds drilling rod swivel coupling, a pair squeezed arm and a pair expansion oil pump, and its scheme exists 5 problems; First: on drilling tool, add swivel coupling is attainable in theory, but often can there is fatal problem in practice, because the rotating part of swivel coupling is by oil sealing, bearing forms, and it can not bear pressure, once pressurized will leakage of oil cause equipment to rotate, because in borer drilling procedure, every meter of drilling rod moment of torsion is generally 5 tons, maximumly reaches 20 tons, and therefore this spiral drill cannot normally use at all; Second: after increase by a pair squeezed arm, due to the particularity of long spire construction technology, loosened soil cannot be discharged, a large amount of remaining soil to be deposited at support arm place, so just causes drilling tool cannot draw in support arm withdrawal process, drilling tool can not on carry; 3rd: because oil cylinder is external, easily by the erratic boulder in soil, lump extruding causes oil cylinder to damage, and two other external oil cylinder also can cause cylinder action asynchronous due to the reason of pumping station system, and squeezed position easily offsets; 4th: the blade of this drilling tool is discontinuous, often cause drilling process casting not smooth, card, stifled drilling tool, cannot on carry drilling tool phenomenon can often occur, this is also that long spire drilling tool technique itself is unallowed; 5th: support arm pumping plant is installed outward at rig, in construction, pumping plant moves frequently, and oil pump station easily breaks down, and oil pipe easily damages, and this engineering method is not easy to multiple devices and constructs simultaneously in addition.
The main frame of squeezed different in nature stake is also adopted as long-spiral drilling machine, adds three groups of small oil tanks, and be connected with outer drilling rod at unit head and drilling rod junction, also add three support arms and double-layer drill rod, and its scheme exists three problems; First: on drilling tool, add extruding-spreading device, just outside stake holes, add three road tongues, little to the bearing power increase effect of pile foundation, carry on drilling tool in addition in process, how control rate is crucial, if on put forward drilling tool excessive velocities, foundation soil shrinkage strain also accelerates, and this technique cuts little ice; Second: owing to have employed double-deck drilling tool, and interior pipe is interior six sides, the moment of torsion that it is born is less, and can think that this technique can not be constructed large diameter pile from this point, therefore, this drilling tool can only do the use of composite foundation, is not extruding-spreading device truly; 3rd: be equipped with three small oil tanks at drilling rod top, because pressure fuel pump is little, squeezed rear on carry in process and easily occur bit freezing, because this technique does not regain directly after supporting to carry drilling tool, tongue is formed, if run into boulder, erratic boulder and empty impact of caving in uphill process around pile body.This drilling tool upper to carry in process can often cannot on the phenomenon of pulling out.
Summary of the invention
In view of this, the invention provides a kind of long spire hydraulic supporting expanding drilling tool, can solve existing long spiral support disk drilling tool be unearthed in drilling process discontinuous, support arm when folding folder make with local methods into drilling tool cannot on carry and the problem such as the squeezed corollary apparatus Frequent Accidents of rig.
A kind of long spire hydraulic supporting expanding drilling tool, comprises drilling rod, drill bit, multichannel steering gear, hollow oil cylinder, high-pressure hydraulic pump, an expansion device assembly and storage slag device;
Described drilling rod is made up of the outer tube of hollow interior pipe and band helical blade, and the outer tube of band helical blade is fixedly connected with on hollow interior pipe, and in the outer tube of band helical blade, the part of hypomere leaves the installing space of an expansion device assembly; Toroidal cavity is formed between the outer circumference surface of hollow interior pipe and the inner peripheral surface of spiral outer tube;
Described multichannel steering gear is positioned at the top of drilling rod but does not contact with drilling rod, and drill bit is fixedly connected on immediately below drilling rod; The pipeline of high-pressure hydraulic pump and hollow oil cylinder is arranged in the cavity that the spiral outer tube of multichannel steering gear one end and hollow interior pipe formed, propping up expansion device assembly is arranged between the outer tube of band helical blade, prop up expansion device assembly in closed state, flight on its outer circumference surface forms continuous print helical structure with the flight on the outer tube outer circumference surface of band helical blade, prop up expansion device assembly under open configuration, prop up expansion device assembly to open gradually under the effect of hollow oil cylinder, form the expansion structure closed; Described storage slag device is arranged in the cavity that the spiral outer tube of drill bit one end and hollow interior pipe formed.
Further, described expansion device assembly is made up of support arm, lower support arm, scraper plate device and a support ring on four groups, one end of described lower support arm is connected with the spiral outer tube top movable being arranged on drill bit one end, the other end of described lower support arm is flexibly connected with one end of upper support arm, the other end of upper support arm is flexibly connected with support ring, described support ring is sleeved on hollow interior pipe, and described support ring is fixedly connected with the actuation mechanism of hollow oil cylinder; Described scraper plate device is arranged on the medial surface of each lower support arm, often organize scraper plate device to be furnished with and independently to drive oil cylinder, when support arm on four groups and lower support arm prop up completely to diffuse into time, described scraper plate device launches and by the space-closed between upper support arm and lower support arm, makes whole expansion device assembly form a closed plate-like cavity under the effect driving oil cylinder.
Further, described expansion device component internal is also provided with the system of spraying water with high pressure, the described system of spraying water with high pressure is fixedly mounted on the outer circumference surface of hollow interior pipe, before an expansion device assembly carries out an expansion, the peripherad soil layer of high pressure water jet pipe is sprayed water, and plays the effect of cutting soil, after an expansion device assembly props up and diffuses into position, the earth entering plate-like inside cavity to plate-like inside cavity water spray, and pours in storage slag device by high pressure water jet pipe.
Beneficial effect:
1, the present invention really achieves the continuity of being unearthed in long spire drilling tool drilling process, solve the pore-forming bit freezing problem caused because blade is discontinuous in pore forming process, in the invention of this drilling tool, support arm is designed to four groups by us, closed ring-type cylinder can be formed after gathering, blade rationally can be welded on support arm surface like this, make the transport channel of long spire soil in drilling process unobstructed, well solve in construction and creep into " bit freezing " phenomenon.
2, multichannel steering gear is arranged on power speed changing upper box part by long spire hydraulic pressure extruding and expanding drilling tool of the present invention, does not bear any external pressure, moment of torsion, and is all arranged on the diverse location of rig by various pumping plant, combine together with rig.
3, support arm of the present invention is designed to drilling tool crosspiece face ring week quartering braced structures, solve the problem of multiple rotary one-tenth dish, this drilling tool only need once rotate 45 degree, open upper-lower scraper device simultaneously, coelosis operation can be completed, most important link is that all insurmountable support arm of similar engineering method closes up problem in addition, in construction usually because of support arm cannot close up drilling tool cannot on carry, the cavity of support arm is difficult to be shaped, the problem such as to cave in serious, many cases prove, the shaping imperfect immediate cause being bearing capacity and can not meeting design requirement of force bearing disk, this is also the obstacle that above-mentioned two kinds of engineering methods cannot be gone beyond, the present invention is provided with in support arm inside the system of spraying water with high pressure, closing up in process at an expansion coelosis and support arm constantly carries out die-cut by water under high pressure to loosened soil in an expansion chamber, make it to become mud and flow in the storage slag device of drilling tool below support arm, thus ensure that support arm close up and drilling tool smoothly on carry.
4, the present invention can simplify the construction sequence forming force bearing disk, and the process carrying brill after having holed can realize expansion and a concrete perfusion operation, saves construction cost greatly.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is that the present invention props up the structural representation (closure state) expanding device assembly;
Fig. 3 is that the present invention props up the structural representation (closure state) expanding device assembly.
Wherein, the steering gear of 1-multichannel, 2-hollow oil cylinder, 3-prop up and expand device assembly, 4-storage slag device, the upper support arm of 5-, 6-lower support arm, 7-scraper plate device.
Detailed description of the invention
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
As shown in Figure 1, the invention provides a kind of long spire hydraulic supporting expanding drilling tool, comprise drilling rod, drill bit, multichannel steering gear 1, hollow oil cylinder 2, high-pressure hydraulic pump, an expansion device assembly 3 and storage slag device 4;
Described drilling rod is made up of the outer tube of hollow interior pipe and band helical blade, and the outer tube of band helical blade is fixedly connected with on hollow interior pipe, and in the outer tube of band helical blade, the part of hypomere leaves the installing space of an expansion device assembly 3; Toroidal cavity is formed between the outer circumference surface of hollow interior pipe and the inner peripheral surface of spiral outer tube;
Described multichannel steering gear 1 is positioned at the top of drilling rod but does not contact with drilling rod, and drill bit is fixedly connected on immediately below drilling rod; The pipeline of high-pressure hydraulic pump and hollow oil cylinder 2 is arranged in the cavity that the spiral outer tube of multichannel steering gear 1 one end and hollow interior pipe formed, propping up expansion device assembly is arranged between the outer tube of band helical blade, prop up expansion device assembly 3 in closed state, flight on its outer circumference surface forms continuous print helical structure with the flight on the outer tube outer circumference surface of band helical blade, prop up expansion device assembly 3 under open configuration, prop up expansion device assembly to open gradually under the effect of hollow oil cylinder 2, form the expansion structure closed; Described storage slag device 4 is arranged in the cavity that the spiral outer tube of drill bit one end and hollow interior pipe formed, and described storage slag device 4 enters the earth of drilling rod inside when an expansion device assembly carries out squeezed for storing.
As shown in Figures 2 and 3, described expansion device assembly is made up of support arm 5, lower support arm 6, scraper plate device 7 and a support ring on four groups, one end of described lower support arm 6 is connected with the spiral outer tube top movable being arranged on drill bit one end, the other end of described lower support arm 6 is flexibly connected with one end of upper support arm 5, the other end of upper support arm 5 is flexibly connected with support ring, described support ring is sleeved on hollow interior pipe, and described support ring is fixedly connected with the actuation mechanism of hollow oil cylinder; Described scraper plate device 7 is arranged on the medial surface of each lower support arm 6, often organize scraper plate device 7 to be furnished with and independently to drive oil cylinder, when support arm 5 on four groups and lower support arm 6 prop up completely to diffuse into time, described scraper plate device 7 launches and is closed in the gap between upper support arm 5 and lower support arm 6 under the effect driving oil cylinder, makes whole expansion device assembly form a closed plate-like cavity.
Described expansion device component internal is also provided with the system of spraying water with high pressure, the described system of spraying water with high pressure is fixedly mounted on the outer circumference surface of hollow interior pipe, before an expansion device assembly carries out an expansion, the peripherad soil layer of high pressure water jet pipe is sprayed water, play the effect of cutting soil, after an expansion device assembly props up and diffuses into position, the earth entering plate-like inside cavity to plate-like inside cavity water spray, and pours in storage slag device by high pressure water jet pipe.
Using method:
The first step: rig starts, stops after projected depth to bore when drilling tool creeps in soil;
Second step: open high-pressure hydraulic pump, is cut the loosened soil of drilling tool support arm surrounding and the compacted soil body of hole wall by sparge pipe;
3rd step: start hollow oil cylinder by four groups of support arm ejections to maximum support width, confirmation reaches design maximum pressure value and pressurize 3--5 starts to draw support arm in after second and opens high-pressure hydraulic pump, props up expansion device assembly and close up and tighten up after 10 seconds;
4th step: rig starts, drilling tool rotates 45 degree, start hollow oil cylinder and again four groups of support arms are supported to Breadth Maximum, now start the driving oil cylinder be built in inside support arm, eight built-in driving oil cylinders drive eight scraper plate devices cut soil and close up, make to form disc-shaped closed cavity in the soil body of crimp, prop up expansion device assembly after 10 seconds and close up and tighten up;
5th step: open high-pressure hydraulic pump, remaining soil after cutting becomes mud and flows in storage slag device under the effect of water under high pressure, concrete is input to through the hollow interior pipe of drilling tool in the cylinder chamber of drilling tool formation under the promotion of delivery pump subsequently, the force bearing disk structure that formation one is complete in disc-shaped closed cavity;
6th step: continuation is carried drilling tool and repeat above-mentioned process, can form multiple force bearing disk in the soil body.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a long spire hydraulic supporting expanding drilling tool, is characterized in that, comprises drilling rod, drill bit, multichannel steering gear (1), hollow oil cylinder (2), high-pressure hydraulic pump, an expansion device assembly (3) and storage slag device (4);
Described drilling rod is made up of the outer tube of hollow interior pipe and band helical blade, and the outer tube of band helical blade is fixedly connected on hollow interior pipe, and in the outer tube of band helical blade, the part of hypomere leaves the installing space of an expansion device assembly (3); Toroidal cavity is formed between the outer circumference surface of hollow interior pipe and the inner peripheral surface of spiral outer tube;
Described multichannel steering gear position (1) is in the top of drilling rod but do not contact with drilling rod, and drill bit is fixedly connected on immediately below drilling rod; The pipeline of high-pressure hydraulic pump and hollow oil cylinder (2) is arranged in the cavity that the spiral outer tube of multichannel steering gear (1) one end and hollow interior pipe formed, between the outer tube that expansion device assembly is arranged on band helical blade and hollow interior pipe, prop up expansion device assembly (3) in closed state, flight on its outer circumference surface forms continuous print helical structure with the flight on the outer tube outer circumference surface of band helical blade, prop up expansion device assembly (3) under open configuration, prop up expansion device assembly to open gradually under the effect of hollow oil cylinder (2), form the expansion structure closed; Described storage slag device (4) is arranged in the cavity that the spiral outer tube of drill bit one end and hollow interior pipe formed.
2. long spire hydraulic supporting expanding drilling tool as claimed in claim 1, it is characterized in that, described expansion device assembly (3) is by support arm (5) on four groups, lower support arm (6), scraper plate device (7) and a support ring composition, one end of described lower support arm (6) is connected with the spiral outer tube top movable being arranged on drill bit one end, the other end of described lower support arm (6) is flexibly connected with one end of upper support arm (5), the other end of upper support arm (5) is flexibly connected with support ring, described support ring is sleeved on hollow interior pipe, described support ring is fixedly connected with the actuation mechanism of hollow oil cylinder, described scraper plate device (7) is arranged on the medial surface of each lower support arm (6), often organize scraper plate device (7) to be furnished with and independently to drive oil cylinder, when support arm (5) on four groups and lower support arm (6) prop up completely to diffuse into time, described scraper plate device (7) is launched and is closed in the gap between upper support arm (5) and lower support arm (6) under the effect driving oil cylinder, makes whole expansion device assembly form a closed plate-like cavity.
3. long spire hydraulic supporting expanding drilling tool as claimed in claim 1 or 2, it is characterized in that, described sparge pipe is fixedly mounted on the outer circumference surface of hollow interior pipe.
4. long spire hydraulic supporting expanding drilling tool as claimed in claim 1, is characterized in that using step as follows,
The first step: rig starts, stops after projected depth to bore when drilling tool creeps in soil;
Second step: open super-pressure water pump, is cut the loosened soil of drilling tool support arm surrounding and the compacted soil body of hole wall by sparge pipe;
3rd step: start hollow oil cylinder by four groups of support arm ejections to maximum support width, confirmation reaches design maximum pressure value and pressurize 3--5 starts to draw support arm in after second and opens super-pressure water pump, props up expansion device assembly and close up and tighten up after 10 seconds;
4th step: rig starts, drilling tool rotates 45 degree, start hollow oil cylinder and again four groups of support arms are supported to Breadth Maximum, now start the driving oil cylinder be built in inside support arm, eight built-in driving oil cylinders drive eight scraper plate devices cut soil and close up, make to form disc-shaped closed cavity in the soil body of crimp, prop up expansion device assembly after 10 seconds and close up and tighten up;
5th step: open high-pressure hydraulic pump, remaining soil after cutting becomes mud and flows in storage slag device under the effect of water under high pressure, concrete is input to through the hollow interior pipe of drilling tool in the cylinder chamber of drilling tool formation under the promotion of delivery pump subsequently, the force bearing disk structure that formation one is complete in disc-shaped closed cavity;
6th step: continuation is carried drilling tool and repeat above-mentioned process, can form multiple force bearing disk in the soil body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510551538.6A CN105239565B (en) | 2015-09-01 | 2015-09-01 | Long spiral hydraulic supporting and expanding drilling tool |
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| CN201510551538.6A CN105239565B (en) | 2015-09-01 | 2015-09-01 | Long spiral hydraulic supporting and expanding drilling tool |
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| CN105239565A true CN105239565A (en) | 2016-01-13 |
| CN105239565B CN105239565B (en) | 2017-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089028A (en) * | 2016-06-14 | 2016-11-09 | 陈功 | A kind of high-quality mountain exploitation boring machine |
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| CN2323126Y (en) * | 1998-02-17 | 1999-06-09 | 杜晓瑞 | Strong hole enlarger |
| CN2458344Y (en) * | 2001-01-18 | 2001-11-07 | 北京市机械施工公司 | Positive and negative circulation wet-working mechanical type dual-purpose drilling device for drilling hole and reaming |
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| CN105239565B (en) | 2017-01-25 |
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Effective date of registration: 20200902 Address after: 054000 13th floor, Wanlong commercial center, 518 Zhongxing West Street, Qiaoxi District, Xingtai City, Hebei Province Patentee after: Hebei dynamic compaction Foundation Engineering Co., Ltd Address before: 054000, Bandung business center, 518 Zhongxing West Street, Shiqiao West, Hebei, Xingtai Patentee before: Teng Jinling |
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