CN105484690A - Piston effect preventing rotary excavating drilling bucket - Google Patents
Piston effect preventing rotary excavating drilling bucket Download PDFInfo
- Publication number
- CN105484690A CN105484690A CN201510884081.0A CN201510884081A CN105484690A CN 105484690 A CN105484690 A CN 105484690A CN 201510884081 A CN201510884081 A CN 201510884081A CN 105484690 A CN105484690 A CN 105484690A
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- CN
- China
- Prior art keywords
- base plate
- fixed base
- piston effect
- bottom plate
- movable floor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
Abstract
The invention discloses a piston effect preventing rotary excavating drilling bucket which comprises a tubular barrel and a bottom plate assembly, the lower end of the barrel is open, and the bottom plate assembly is arranged at the bottom end of the barrel and comprises a fixed bottom plate and a movable bottom plate which can relatively rotate by a preset angle. A ventilating pipeline is arranged on the inner wall of the barrel, a vent hole correspondingly connected with the ventilating pipeline is formed in the fixed bottom plate, and the movable bottom plate rotates relative to the fixed bottom plate to open or block the vent hole in the fixed bottom plate. Due to the fact that the ventilating pipeline is arranged in the barrel and is controlled to be opened and closed through the movable bottom plate, the piston effect can be effectively prevented from being formed in the rotary excavating drilling process, the problem of soil layer collapse is effectively solved, the hole forming quality is improved, and then the pile forming quality in the concrete grouting process is improved.
Description
Technical field
The present invention relates to auger drill of rotary drilling rig bucket technical field, particularly the anti-piston effect rotary drilling digger of one.
Background technology
In recent years, rotary drilling rig is widely used in Pile Foundation, Bridge Pile construction operation, and the use of rotary drilling rig not only alleviates the labour intensity of workman, greatly improves whole construction speed and quality simultaneously.
But, current existing rotary drilling digger especially Double bottom drags for sand hopper there is piston effect in practice of construction process, especially in mud construction, because bucket body outer wall and mud fit tightly, bucket body and mud form piston effect, when rotary drilling digger promotes bucket body, drilling bucket is difficult to promote and because piston effect is at the bottom of soft mud inspiration hole around at the bottom of hole, soil layer around at the bottom of hole is caused to cave in, have impact on the construction quality of spiral-digging pore, pile quality when have impact on filling concrete, and certain potential safety hazard is brought to job site.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of effective raising construction quality, reduces the anti-piston effect rotary drilling digger of potential safety hazard.
For solving the problems of the technologies described above adopted technical scheme: a kind of anti-piston effect rotary drilling digger, comprise in tubular and the uncovered cylindrical shell in lower end and be located at the bottom deck assembly of cylindrical shell bottom, described bottom deck assembly comprises fixed base plate and the movable floor that relatively can turn round predetermined angular each other, an air duct is provided with at described cylinder inboard wall, described fixed base plate is provided with the air vent that connect corresponding to air duct, and described movable floor rotates relative to fixed base plate to open or to block the air vent on fixed base plate.
Further, described fixed base plate center is connected by bearing pin with movable floor center, and described movable floor can rotate 0 ° ~ 90 ° relative to fixed base plate around bearing pin.
Further, described fixed base plate and movable floor measure-alike and all in Z-shaped shape.
Further, described cylindrical shell bottom one lateral edges and fixed base plate are hinged, and opposite side edge, described cylindrical shell bottom and fixed base plate are fastened by snap close.
Further, described air duct is be arranged on sealed steel pipe in cylindrical shell or sealing steel tank, and the sectional dimension of described air duct is more than or equal to the size of air vent.
Beneficial effect: in this anti-piston effect rotary drilling digger, by arranging air duct in cylindrical shell, and controlled the opening and closing of this air duct by movable floor, can avoid forming piston effect in rotary dig drilling process effectively.When rotary drilling digger creeps into, movable floor rotates to block air vent, the earthwork can be avoided to enter in air duct and result in blockage; When rotary drilling digger promotes, movable floor rotates backward, movable floor no longer blocks the air vent on fixed base plate, mud or air can be entered space between bucket body and soil layer through air duct, decrease piston effect, efficiently solve soil layer to cave in problem, improve hole quality, and then pile quality when improve filling concrete.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further;
Fig. 1 is the structural representation that the embodiment of the present invention creeps into state;
Fig. 2 is that the embodiment of the present invention creeps into fixed base plate and movable floor position view in state;
Fig. 3 is the structural representation that the embodiment of the present invention promotes state;
Fig. 4 is fixed base plate and movable floor position view in embodiment of the present invention lifting state.
Detailed description of the invention
Referring to figs. 1 through Fig. 4, a kind of anti-piston effect rotary drilling digger of the present invention, comprise in tubular and the uncovered cylindrical shell in lower end 1 and be located at the bottom deck assembly of cylindrical shell 1 bottom, bottom deck assembly comprises the fixed base plate 2 and movable floor 3 that relatively can turn round predetermined angular each other, an air duct 4 is provided with at cylindrical shell 1 inwall, fixed base plate 2 is provided with the air vent 5 that connect corresponding to air duct 4, and movable floor 3 rotates the air vent 5 opened or block on fixed base plate 2 relative to fixed base plate 2.
In the present embodiment, air duct 4 is for being arranged on sealed steel pipe in cylindrical shell 1 or sealing steel tank, the sectional dimension of air duct 4 is more than or equal to the size of air vent 5, cylindrical shell 1 bottom one lateral edges and fixed base plate 2 are hinged by a bearing pin, opposite side edge, cylindrical shell 1 bottom and fixed base plate 2 are fastened by snap close, open snap close, fixed base plate 2 can rotate 0 ° ~ 180 ° relative to cylindrical shell 1.
Wherein, fixed base plate 2 center is be connected by bearing pin with movable floor 3 center, movable floor 3 bottom is formed with bucket tooth, movable floor 3 can rotate 0 ° ~ 90 ° relative to fixed base plate 2 around bearing pin, controlled the opening and closing of this air duct 4 by movable floor 3, can effectively avoid forming piston effect in rotary dig drilling process.Particularly, drilling machine drilling rod rotates forward and drives bucket tooth and below soil layer to carry out cutting movement, and then driving movable floor 3 to be that the center of circle rotates about 90 ° with bearing pin, movable floor 3 shelters from the air vent on fixed base plate 2, and when preventing from creeping into, the earthwork enters in air duct 4 and results in blockage; Drilling machine drilling rod rotates backward, bucket tooth and below soil layer is driven to carry out fricting movement, movable floor 3 is made to be that the center of circle oppositely goes back to about 90 ° with bearing pin, now, movable floor 3 no longer blocks the air vent on fixed base plate 2, mud or air enter bottom deck assembly and soil layer gap, below fast by air duct 4, no longer form piston effect herein, therefore when lifting drilling bucket, around soil layer can keep pressure balance because mud or air enter, soil layer caves in reduction, effectively improves the quality of pore-forming and filling concrete pile.
As preferably, fixed base plate 2 and movable floor 3 measure-alike and all in Z-shaped shape.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (5)
1. an anti-piston effect rotary drilling digger, it is characterized in that: comprise in tubular and the uncovered cylindrical shell in lower end and be located at the bottom deck assembly of cylindrical shell bottom, described bottom deck assembly comprises fixed base plate and the movable floor that relatively can turn round predetermined angular each other, an air duct is provided with at described cylinder inboard wall, described fixed base plate is provided with the air vent that connect corresponding to air duct, and described movable floor rotates relative to fixed base plate to open or to block the air vent on fixed base plate.
2. anti-piston effect rotary drilling digger according to claim 1, is characterized in that: described fixed base plate center is connected by bearing pin with movable floor center, described movable floor can rotate 0 ° ~ 90 ° relative to fixed base plate around bearing pin.
3. anti-piston effect rotary drilling digger according to claim 2, is characterized in that: described fixed base plate and movable floor measure-alike and all in Z-shaped shape.
4. anti-piston effect rotary drilling digger according to claim 1, it is characterized in that: described cylindrical shell bottom one lateral edges and fixed base plate are hinged, opposite side edge, described cylindrical shell bottom and fixed base plate are fastened by snap close.
5. anti-piston effect rotary drilling digger according to claim 1, is characterized in that: described air duct is be arranged on sealed steel pipe in cylindrical shell or sealing steel tank, and the sectional dimension of described air duct is more than or equal to the size of air vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510884081.0A CN105484690B (en) | 2015-12-02 | 2015-12-02 | A kind of anti-piston effect rotary drilling digger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510884081.0A CN105484690B (en) | 2015-12-02 | 2015-12-02 | A kind of anti-piston effect rotary drilling digger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105484690A true CN105484690A (en) | 2016-04-13 |
| CN105484690B CN105484690B (en) | 2018-05-04 |
Family
ID=55671935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510884081.0A Active CN105484690B (en) | 2015-12-02 | 2015-12-02 | A kind of anti-piston effect rotary drilling digger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105484690B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712248A (en) * | 2015-03-10 | 2015-06-17 | 湘潭中威重工有限公司 | Barrel plane type suction-preventing rotary excavating drilling bucket |
| CN109915027A (en) * | 2019-04-04 | 2019-06-21 | 河北建设勘察研究院有限公司 | A kind of drilling bit of rotary-digging drilling rig preventing Borehole Diameter in soft modeling stratum |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2530531A1 (en) * | 1975-07-09 | 1977-01-27 | Salzgitter Maschinen Ag | Rotary ground drill tool - has drilling bucket with baseplate closure controlled by kelly bar and pulled for emptying |
| CN101382050A (en) * | 2008-08-18 | 2009-03-11 | 山河建设集团有限公司 | Hydraulic salvage method for door of bucket of rotary drill rig |
| CN202510072U (en) * | 2012-03-14 | 2012-10-31 | 北京市三一重机有限公司 | Drilling tool and rotary drilling rig with same |
| CN103089145A (en) * | 2013-02-06 | 2013-05-08 | 上海中联重科桩工机械有限公司 | Down-hole hammer power head of rotary drilling rig and rotary drilling rig |
| US8615906B2 (en) * | 2012-04-16 | 2013-12-31 | Pengo Corporation | Drilling bucket |
| CN104712248A (en) * | 2015-03-10 | 2015-06-17 | 湘潭中威重工有限公司 | Barrel plane type suction-preventing rotary excavating drilling bucket |
| CN204492730U (en) * | 2014-12-25 | 2015-07-22 | 河南省三力机械制造有限公司 | A kind of rotary drilling rig and drilling bucket fishing device thereof |
| CN204782727U (en) * | 2015-03-10 | 2015-11-18 | 湘潭中威重工有限公司 | Barrel plane formula is prevented inhaling and is dug drilling bucket soon |
-
2015
- 2015-12-02 CN CN201510884081.0A patent/CN105484690B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2530531A1 (en) * | 1975-07-09 | 1977-01-27 | Salzgitter Maschinen Ag | Rotary ground drill tool - has drilling bucket with baseplate closure controlled by kelly bar and pulled for emptying |
| CN101382050A (en) * | 2008-08-18 | 2009-03-11 | 山河建设集团有限公司 | Hydraulic salvage method for door of bucket of rotary drill rig |
| CN202510072U (en) * | 2012-03-14 | 2012-10-31 | 北京市三一重机有限公司 | Drilling tool and rotary drilling rig with same |
| US8615906B2 (en) * | 2012-04-16 | 2013-12-31 | Pengo Corporation | Drilling bucket |
| CN103089145A (en) * | 2013-02-06 | 2013-05-08 | 上海中联重科桩工机械有限公司 | Down-hole hammer power head of rotary drilling rig and rotary drilling rig |
| CN204492730U (en) * | 2014-12-25 | 2015-07-22 | 河南省三力机械制造有限公司 | A kind of rotary drilling rig and drilling bucket fishing device thereof |
| CN104712248A (en) * | 2015-03-10 | 2015-06-17 | 湘潭中威重工有限公司 | Barrel plane type suction-preventing rotary excavating drilling bucket |
| CN204782727U (en) * | 2015-03-10 | 2015-11-18 | 湘潭中威重工有限公司 | Barrel plane formula is prevented inhaling and is dug drilling bucket soon |
Non-Patent Citations (1)
| Title |
|---|
| 吴允成: "旋挖钻斗结构的探讨", 《探矿工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712248A (en) * | 2015-03-10 | 2015-06-17 | 湘潭中威重工有限公司 | Barrel plane type suction-preventing rotary excavating drilling bucket |
| CN104712248B (en) * | 2015-03-10 | 2017-01-11 | 湘潭中威重工有限公司 | Barrel plane type suction-preventing rotary excavating drilling bucket |
| CN109915027A (en) * | 2019-04-04 | 2019-06-21 | 河北建设勘察研究院有限公司 | A kind of drilling bit of rotary-digging drilling rig preventing Borehole Diameter in soft modeling stratum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105484690B (en) | 2018-05-04 |
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