CN204646158U - Core bit is dug for revolving of competent bed - Google Patents
Core bit is dug for revolving of competent bed Download PDFInfo
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- CN204646158U CN204646158U CN201520336153.3U CN201520336153U CN204646158U CN 204646158 U CN204646158 U CN 204646158U CN 201520336153 U CN201520336153 U CN 201520336153U CN 204646158 U CN204646158 U CN 204646158U
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- rock core
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Abstract
Described in the utility modelly dig core bit for revolving of competent bed, a lift drilling rod; The cylinder be connected with described lift drilling rod power bores; Be arranged on the pick on the drill bit of described cylinder brill; Wherein, described cylinder bores on inwall and is provided with an eccentric fixture block near cylinder brill top.Rock core is made to be connected in cylinder brill by the eccentric fixture block be arranged on inwall, and utilize rig deadweight to exert pressure, make the central axis generation deviation of rock core, thus taking-up that rock core is fractureed, comparing in prior art the rotation adopting drilling rod and cylinder to bore drives rock core to fracture, the damage easily causing drilling rod and cylinder to bore, shortens the problem in the application life of drilling tool.The utility model by increasing eccentric fixture block, and makes rock core bias fracture under the pressure of rig self gravitation, and structure is simple, easy to operate, and can not produce the problem damaging drilling rod and cylinder brill, ensure that the application life of drilling tool.
Description
Technical field
The utility model relates to probing, pile foundation construction field, is specifically related to a kind ofly dig core bit for revolving of competent bed.
Background technology
When rotary dig drilling competent bed (compressive strength is at the rock of more than 100MPa), as: granite, it is that the rotation of boring bottom border gear wheel by cylinder depicts an annular deep trouth on rock that gear wheel cylinder is drilled in when creeping into, but because the quality of rock own is too hard, often be difficult to smoothly core fractureed in rotation process and take out, and the drilling tool that easily weares and teares when being drilled into fully-jewelled causes loss to strengthen.For this situation, effective way bores the angled trapezoidal steel plate of internal welding two blocks at cylinder at present, can block core and fractureed by rock core by the moment of torsion that drilling rod is huge at drill bit rotational process light plate.Though the method can improve the success rate of sampling, drill bit, drilling rod loss not only do not reduce and can increase on the contrary, and the core fractureed easily occurs to loosen and to drop or too tight and be difficult to the problem poured out, therefore this drilling tool and method popularization not yet in effect.
Utility model content
In view of this, be necessary to provide a kind of be applicable to competent bed and can avoid damaging the core bit of drill bit and drilling rod.
Dig a core bit for revolving of competent bed, comprise
One lift drilling rod;
The cylinder be connected with described lift drilling rod power bores;
Be arranged on the pick on the drill bit of described cylinder brill;
Wherein, described cylinder bores on inwall and is provided with an eccentric fixture block near cylinder brill top.
Preferably, described pick circumference is arranged on the drill bit of described cylinder brill.
Preferably, described pick and described eccentric fixture block are diametrically arranged.
Preferably, at least one pick described and described eccentric fixture block are symmetrical arranged on cross section perpendicular to axial direction.
Preferably, described eccentric fixture block has an inclined plane, and the relatively described cylinder in described inclined plane bores the direction of the angle of inclination of inwall boring top along drill bit to cylinder and becomes large gradually.
Preferably, the free end of described pick be partial to described cylinder bore axle center be obliquely installed.
Preferably, the angle of inclination of described eccentric fixture block is greater than the angle of inclination of described pick.
Preferably, inclined plane and cylinder bore the angle angle between inwall is 40o-60o.
Described in the utility modelly dig core bit for revolving of competent bed, rock core is made to be connected in cylinder brill by the eccentric fixture block be arranged on inwall, and utilize rig deadweight to exert pressure, make the central axis generation deviation of rock core, thus taking-up that rock core is fractureed, comparing in prior art the rotation adopting drilling rod and cylinder to bore drives rock core to fracture, and the damage easily causing drilling rod and cylinder to bore, shortens the problem in the application life of drilling tool.The utility model by increasing eccentric fixture block, and makes rock core bias fracture under the pressure of rig self gravitation, and structure is simple, easy to operate, and can not produce the problem damaging drilling rod and cylinder brill, ensure that the application life of drilling tool.
Accompanying drawing explanation
Fig. 1 described in the utility modelly revolves for competent bed the structural representation digging core bit.
Detailed description of the invention
Clearly understand to make the purpose of this utility model, technical scheme and advantage, below in conjunction with drawings and Examples, the utility model is further elaborated, be to be understood that, specific embodiment described herein only in order to explain the utility model, and is not used in restriction the utility model.
As shown in Figure 1, the utility model provides a kind of and digs core bit for revolving of competent bed, and it comprises lift drilling rod 10, cylinder brill 20, pick 30 and eccentric fixture block 40, and described cylinder bores 20 and is connected with described lift drilling rod 10 power; Described pick 30 is arranged on described cylinder and bores on the drill bit of 20; Described eccentric fixture block 40 is arranged on described cylinder and bores on 20 inwalls, and bores 20 tops settings near cylinder.
When rotary dig drilling competent bed, first adopt gear wheel cylinder to bore 20 on rock, depict an annular deep trouth, during near fully-jewelled, change described in the utility model revolving and dig core bit, described revolving is dug core bit and slowly put to bottom land, making rock core be connected to cylinder by the eccentric fixture block 40 be arranged on inwall bores in 20, and utilize rig deadweight to exert pressure, make the central axis generation deviation of rock core, thus taking-up that rock core is fractureed, comparing in prior art the rotation adopting drilling rod and cylinder to bore drives rock core to fracture, easily cause the damage that drilling rod and cylinder bore, shorten the problem in the application life of drilling tool.The utility model by increasing eccentric fixture block 40, and makes rock core bias fracture under the pressure of rig self gravitation, and structure is simple, easy to operate, and can not produce the problem damaging drilling rod and cylinder brill, ensure that the application life of drilling tool.
Concrete, described eccentric fixture block 40 has an inclined plane, and the direction that 20 tops are bored along drill bit to cylinder in the angle of inclination that the relatively described cylinder in described inclined plane bores 20 inwalls becomes large gradually.By arranging this inclined plane, make core bit in the process pressing down cutting ferrule, the inner diameter of cylinder brill 20 reduces gradually, thus rock core is fastened between inclined plane and inwall, and the central axis generation deviation of rock core is fractureed.Wherein, inclined plane and cylinder bore the preferred 40o-60o of angle angle between inwall.
For can conveniently the rock core fractureed be lifted out, and ensure that in the process of lift, rock core can not come off, therefore, by circumference on the drill bit that bores at described cylinder, pick 30 is set, and the axle center of the free end of described pick 30 being partial to described cylinder brill 20 is obliquely installed, pick 30 is made to form relative cutting ferrule with eccentric fixture block 40, further, for improving the utilization ratio of pick, described pick 30 is diametrically arranged with described eccentric fixture block 40, at least one pick 30 is wherein preferably made to be symmetrical arranged on cross section perpendicular to axial direction with described eccentric fixture block 40.So, when rock core generation deviation fractures, also relatively there is deviation in its one end fractureed, thus be fastened in on the symmetrically arranged pick 30 of eccentric fixture block 40, namely the two ends of rock core are fastened between described eccentric fixture block 40 and pick 30, enable the rock core fractureed lift out, and ensure that in the process of lift, rock core can not come off.
After rock core lifts out, drive cylinder to bore 20 by rotary pulling drilling rod 10 to rotate, cylinder is bored between 20 and rock core relative displacement occurs, thus split away off in cylinder brill 20, the cutting ferrule bored in 20 at cylinder due to rock core is not fixed, therefore there is relative displacement than being easier to, but for ensureing that further rock core can be convenient and bore in 20 from cylinder smoothly and split away off, the angle of inclination of described eccentric fixture block 40 is made to be greater than the angle of inclination of described pick 30, increase the falling tendency of rock core, thus rock core is split away off compared with just boring in 20 from cylinder when thin tail sheep in generation.
Described in the utility modelly dig core bit for revolving of competent bed, making rock core be connected to cylinder by the eccentric fixture block 40 be arranged on inwall bores in 20, and utilize rig deadweight to exert pressure, make the central axis generation deviation of rock core, thus taking-up that rock core is fractureed, and for can conveniently the rock core fractureed be lifted out, and ensure that in the process of lift, rock core can not come off, the axle center of the free end of described pick 30 being partial to described cylinder brill 20 is obliquely installed, and makes pick 30 form relative cutting ferrule with eccentric fixture block 40.Described in the utility model for competent bed revolve dig core bit by increase eccentric fixture block 40, rock core is fractureed revolving bias under the gravity pressure digging core drilling rig, and and form cutting ferrule relation between pick 30, thus eliminate the problem easily damaging drilling rod and cylinder brill in prior art, not only ensure that the application life of drilling tool, also improve the operating efficiency of creeping into.
Meanwhile, described in the utility modelly dig eccentric fixture block 40 described in core bit adopt the cutting of one block of steel plate to make for revolving of competent bed, be welded in cylinder and bore 20 inwalls, described pick 30 does not have intensity and new and old requirement, utilizes waste and old pick 30; Therefore, described in revolve that to take core drilling tool structure simple, easy to operate, and cheap for manufacturing cost, be suitable for widely using.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. dig a core bit for revolving of competent bed, it is characterized in that: comprise
One lift drilling rod;
The cylinder be connected with described lift drilling rod power bores;
Be arranged on the pick on the drill bit of described cylinder brill;
Wherein, described cylinder bores on inwall and is provided with an eccentric fixture block near cylinder brill top.
2. according to claim 1ly dig core bit for revolving of competent bed, it is characterized in that, described pick circumference is arranged on the drill bit that described cylinder bores.
3. according to claim 1ly dig core bit for revolving of competent bed, it is characterized in that, described pick and described eccentric fixture block are diametrically arranged.
4. according to claim 1ly dig core bit for revolving of competent bed, it is characterized in that, at least one pick described and described eccentric fixture block are symmetrical arranged on cross section perpendicular to axial direction.
5. according to claim 1ly dig core bit for revolving of competent bed, it is characterized in that, described eccentric fixture block has an inclined plane, and top is bored at the angle of inclination that the relatively described cylinder in described inclined plane bores inwall direction along drill bit to cylinder becomes large gradually.
6. according to claim 5ly dig core bit for revolving of competent bed, it is characterized in that, the free end of described pick is partial to the axle center that described cylinder bores and is obliquely installed.
7. according to claim 6ly dig core bit for revolving of competent bed, it is characterized in that, the angle of inclination of described eccentric fixture block is greater than the angle of inclination of described pick.
8. according to claim 7ly dig core bit for revolving of competent bed, it is characterized in that, inclined plane and the cylinder angle angle of boring between inwall is 40o-60o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336153.3U CN204646158U (en) | 2015-05-23 | 2015-05-23 | Core bit is dug for revolving of competent bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336153.3U CN204646158U (en) | 2015-05-23 | 2015-05-23 | Core bit is dug for revolving of competent bed |
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| Publication Number | Publication Date |
|---|---|
| CN204646158U true CN204646158U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520336153.3U Active CN204646158U (en) | 2015-05-23 | 2015-05-23 | Core bit is dug for revolving of competent bed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929555A (en) * | 2015-05-23 | 2015-09-23 | 中冶集团武汉勘察研究院有限公司 | Rotary excavating coring drilling tool for hard rock strata |
| CN109538146A (en) * | 2018-08-20 | 2019-03-29 | 山东正元地质资源勘查有限责任公司 | A kind of geological drilling drills through core apparatus with anti-lost |
| CN114278303A (en) * | 2022-03-03 | 2022-04-05 | 中国科学院地质与地球物理研究所 | Planetary multifunctional coring bit, coring method and coring system |
-
2015
- 2015-05-23 CN CN201520336153.3U patent/CN204646158U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929555A (en) * | 2015-05-23 | 2015-09-23 | 中冶集团武汉勘察研究院有限公司 | Rotary excavating coring drilling tool for hard rock strata |
| CN109538146A (en) * | 2018-08-20 | 2019-03-29 | 山东正元地质资源勘查有限责任公司 | A kind of geological drilling drills through core apparatus with anti-lost |
| CN114278303A (en) * | 2022-03-03 | 2022-04-05 | 中国科学院地质与地球物理研究所 | Planetary multifunctional coring bit, coring method and coring system |
| CN114278303B (en) * | 2022-03-03 | 2022-05-27 | 中国科学院地质与地球物理研究所 | Planetary multifunctional coring bit, coring method and coring system |
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