CN212082899U - Coal petrography sample coring fixing device - Google Patents
Coal petrography sample coring fixing device Download PDFInfo
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- CN212082899U CN212082899U CN202020649946.1U CN202020649946U CN212082899U CN 212082899 U CN212082899 U CN 212082899U CN 202020649946 U CN202020649946 U CN 202020649946U CN 212082899 U CN212082899 U CN 212082899U
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Abstract
The utility model provides a coal petrography appearance coring fixing device belongs to rock mechanics test field. The coal rock sample coring fixing device comprises an annular groove, an annular bag, a fluid pipeline and a fluid pressurizing unit; the opening of the annular groove faces the inner side; an annular bag is arranged in the annular groove, and after the annular bag expands, the annular bag is exposed out of the opening of the annular groove; the bottom of the annular groove is provided with an assembling part which is used for being assembled and connected with a base of the core drilling machine; the annular bag is connected with a fluid pressurizing unit through a fluid pipeline, and the fluid pressurizing unit drives the annular bag to expand or contract. The utility model is suitable for clamping and fixing irregular coal and rock samples, the annular bag is expanded by the fluid pressing unit pressing fluid, the annular bag is contacted with the irregular coal and rock samples in a larger area, the clamping to the coal and rock samples is firm, and the coal and rock samples can not be damaged even if the clamping force is too large due to the contact of the annular bag and the coal and rock samples; the clamping and fixing operation is time-saving and labor-saving, and the coal rock sample coring efficiency and the success rate are higher.
Description
Technical Field
The utility model belongs to the technical field of rock mechanics is experimental and specifically relates to a coal rock sample coring fixing device is related to.
Background
Before a rock mechanical test, massive coal samples and rock samples collected on site need to be cored in a laboratory to manufacture test pieces meeting requirements. According to relevant standard requirements, a cylindrical test piece with the diameter of 50mm and the height of 100mm or a cylindrical test piece with the height-diameter ratio of 2 is usually manufactured. Coring fixing device need be used to coring at the coal petrography appearance coring in-process, and traditional coring fixing device mainly is the bench vice, or with the close improvement device of bench vice, and the bench vice is pressed from both sides the coal petrography appearance tightly through the manpower rotation bolt by two parallel flat-plate anchor clamps. However, the coal and rock samples collected on site are all irregular in shape, and the flat-plate-shaped clamp is small in contact area with the coal and rock samples and is not firmly fixed; in addition, current flat-plate anchor clamps are hard material, and the clamp force too big can lead to the coal rock sample damaged, and the clamp force undersize can lead to coring in-process coal rock sample to rock to get the core failure.
Chinese patent publication No. CN207528492U discloses an irregular-shaped soft rock coring fixing device, which is characterized in that a plurality of threaded rods are arranged in a three-dimensional manner to clamp and fix irregular-shaped coal rock samples, the clamping is firm, but the threaded rods are made of hard materials, and a sheath is arranged at the tail end of each threaded rod to reduce the problems caused by the hard materials, but the improvement effect is poor; in addition, the clamping and fixing operation of the device is complicated, and the device is manually operated, so that the time and labor are wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coal petrography sample coring fixing device realizes pressing from both sides tightly fixed to irregularly shaped coal petrography sample, presss from both sides tightly firm, presss from both sides tight fixed process and avoids coal petrography sample damaged, presss from both sides tight fixed operation labour saving and time saving.
In order to achieve the above object, the present invention adopts the following technical solutions:
a coal rock sample coring fixing device comprises an annular groove, an annular bag, a fluid pipeline and a fluid pressurizing unit;
the opening of the annular groove faces the inner side;
an annular bag is arranged in the annular groove, and after the annular bag expands, the annular bag is exposed out of the opening of the annular groove;
the bottom of the annular groove is provided with an assembling part which is used for being assembled and connected with a base of the core drilling machine;
the annular bag is connected with a fluid pressurizing unit through a fluid pipeline, and the fluid pressurizing unit drives the annular bag to expand or contract.
Furthermore, the assembly part comprises a base arranged at the bottom of the annular groove, a plurality of assembly seats are arranged on the base, and the assembly seats are assembled and connected with the core drilling machine base.
Furthermore, the base is provided with an annular supporting ring, and a plurality of assembling seats are arranged on the annular supporting ring at equal intervals along the circumferential direction.
Further, the cross section of the annular groove is C-shaped.
Further, the cross-sectional aspect ratio of the annular bladder is 70%.
Further, the annular bladder is made of a rubber material.
Further, the rubber material is provided as butyl rubber.
Furthermore, the fluid pressurizing unit comprises a bidirectional hydraulic pump and an oil tank, one end of the bidirectional hydraulic pump is connected with the oil tank through an oil supply and return pipeline, and the other end of the bidirectional hydraulic pump is connected with the annular bag through a fluid pipeline.
Further, a hydraulic meter and a valve are arranged on the fluid pipeline.
Further, the bidirectional hydraulic pump is an electric hydraulic pump.
The utility model has the beneficial technical effects that:
the utility model discloses a coal petrography sample coring fixing device is fit for being used for the tight fixing of clamp to irregularly shaped coal petrography sample, pressurizes the fluid through the fluid unit and makes the annular bag expand, and the annular bag is great area contact irregularly shaped coal petrography sample, and it is firm to press from both sides the tight coal petrography sample, contacts with coal petrography sample through the annular bag, and too big clamp force can not lead to the coal petrography sample damaged yet; the clamping and fixing operation is time-saving and labor-saving, and the coal rock sample coring efficiency and the success rate are higher.
Drawings
Fig. 1 is a schematic structural view of a coal rock sample coring fixing device according to an embodiment of the present invention;
FIG. 2 is a bottom view of the annular groove, the annular bag and the base of the coal rock sample coring fixing device of the embodiment of the present invention;
fig. 3 is the embodiment of the utility model provides a coal petrography sample core fixing device middle ring groove, annular bag and base part's cross-sectional view, annular bag is in the inflation state this moment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
Certain embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In an embodiment of the present invention, a coal rock sample coring fixing device is provided, please refer to fig. 1 to 3, including an annular groove 1, an annular bag 2, a fluid pipeline 3, a fluid pressurizing unit, etc.
The annular groove 1 is made of metal materials, the opening of the annular groove 1 faces the inner side, and the cross section of the annular groove 1 is preferably C-shaped. The annular groove 1 with the C-shaped cross section can support and semi-wrap the annular bag 2 when the annular bag 2 expands to clamp a coal rock sample, so that the annular bag 2 is prevented from falling off from the annular groove 1.
An annular bag 2 is arranged in the annular groove 1, after the annular bag 2 expands, the annular bag 2 is exposed out of an opening of the annular groove 1, and the middle space of the annular bag 2 is used for clamping irregular-shaped coal rock samples. When the annular bag 2 is in a non-expansion state, a gap exists between the annular bag 2 and the coal rock sample, and the coal rock sample is separated from the annular bag 2.
Wherein, the annular bag 2 bears 5MP at maximumaThe cross-sectional flatness ratio of the annular bag 2 is 70%, so that the annular bag 2 is in contact with the inner wall of the annular groove 1 in the longitudinal direction in an expanded state, and extends to a larger size in the transverse direction to clamp the coal rock sample. The annular bag 2 is made of butyl rubber material, and has long service life through fatigue test.
The bottom of ring channel 1 sets up assembly portion, and assembly portion is used for with coring machine base assembly connection. In this embodiment, the assembling portion includes a base 41, the base 41 is disposed at the bottom of the circular groove, the base 41 is configured as an annular support ring, four assembling seats 42 are arranged on the annular support ring at equal intervals along the circumferential direction, screw holes are formed in the assembling seats 42, and the assembling seats 42 are integrally assembled with the base of the core drilling machine through bolts.
The annular bladder 2 is connected to a fluid pressurizing unit via a fluid line 3, and the fluid pressurizing unit drives the annular bladder 2 to expand or contract.
The fluid pressurizing unit can pressurize a medium such as hydraulic oil, water, compressed air and inert gas into the annular bag 2.
The preferred hydraulic oil of this embodiment, efficiency and the security of the hydraulic oil of suppressing are higher, and its correspondence sets up as follows:
one end of the bidirectional hydraulic pump 5 is connected with an oil tank 6 through an oil supply and return pipeline 7, and the other end of the bidirectional hydraulic pump 5 is connected with the annular bag 2 through a fluid pipeline 3. The fluid line 3 is provided with a hydraulic gauge 8 and a valve 9. Wherein, two-way hydraulic pump 5 in this embodiment is electronic hydraulic pump, and for manual hydraulic pump, electronic hydraulic pump beats the process labour saving and time saving more.
The coal rock sample coring fixing device of this embodiment, its operating procedure is as follows:
before use, the annular bag 2 is assembled and connected with a core drilling machine base through an assembling part, the interior of the annular bag 2 is vacant, and the volume of the annular bag 2 is contracted;
placing the coal rock sample in the middle space of the annular bag 2;
hydraulic oil is injected into the annular bag 2 through the bidirectional hydraulic pump 5 for pressurization, the annular bag 2 expands in volume, and the coal rock sample is gradually wrapped by the annular bag 2;
stopping pressurizing the bidirectional hydraulic pump 5, closing the valve 9, and starting coring of the coal rock sample by the coring unit of the coring machine;
after coring, open valve 9, take out oil tank 6 through two-way hydraulic pump 5 with hydraulic oil in the annular bag 2, annular bag 2 volume shrink takes out the coal rock sample.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly understand that the coal rock sample coring fixing device of the present invention has the advantages of simple structure, easy operation and low cost. The utility model discloses be fit for being used for pressing from both sides the clamp tightly fixed to irregularly shaped coal rock sample, suppress hydraulic oil through the fluid and make annular bag 2 inflation, annular bag 2 contact irregularly shaped coal rock sample, and area of contact is great, and it is firm to press from both sides the clamp tightly to coal rock sample, through the rubber face of annular bag 2 and the contact of coal rock sample, annular bag 2 too big to coal rock sample clamp force can not lead to the coal rock sample damaged yet; the clamping and fixing operation is time-saving and labor-saving, and the coal rock sample coring efficiency and the success rate are higher.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a coal petrography sample coring fixing device which characterized in that: the annular pressure device comprises an annular groove, an annular bag, a fluid pipeline and a fluid pressurizing unit;
the opening of the annular groove faces the inner side;
an annular bag is arranged in the annular groove, and after the annular bag expands, the annular bag is exposed out of the opening of the annular groove;
the bottom of the annular groove is provided with an assembling part which is used for being assembled and connected with a base of the core drilling machine;
the annular bag is connected with a fluid pressurizing unit through a fluid pipeline, and the fluid pressurizing unit drives the annular bag to expand or contract.
2. The coal rock sample coring fixing device of claim 1, wherein: the assembly portion comprises a base arranged at the bottom of the annular groove, a plurality of assembly seats are arranged on the base, and the assembly seats are in assembly connection with the core drilling machine base.
3. The coal rock sample coring fixing device of claim 2, wherein: the base is provided with an annular supporting ring, and a plurality of assembling seats are arranged on the annular supporting ring at equal intervals along the circumferential direction.
4. The coal rock sample coring fixing device of claim 1, wherein: the cross section of the annular groove is C-shaped.
5. The coal rock sample coring fixing device of claim 1, wherein: the cross-sectional aspect ratio of the annular bladder is 70%.
6. The coal rock sample coring fixing device of claim 1, wherein: the annular bladder is made of a rubber material.
7. The coal rock sample coring fixing device of claim 6, wherein: the rubber material is butyl rubber.
8. The coal rock sample coring fixing device of claim 1, wherein: the fluid pressurizing unit comprises a bidirectional hydraulic pump and an oil tank, one end of the bidirectional hydraulic pump is connected with the oil tank through an oil supply and return pipeline, and the other end of the bidirectional hydraulic pump is connected with the annular bag through a fluid pipeline.
9. The coal rock sample coring fixing device of claim 8, wherein: and a hydraulic meter and a valve are arranged on the fluid pipeline.
10. The coal rock sample coring fixing device of claim 8, wherein: the bidirectional hydraulic pump is an electric hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020649946.1U CN212082899U (en) | 2020-04-26 | 2020-04-26 | Coal petrography sample coring fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020649946.1U CN212082899U (en) | 2020-04-26 | 2020-04-26 | Coal petrography sample coring fixing device |
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| CN212082899U true CN212082899U (en) | 2020-12-04 |
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| CN202020649946.1U Active CN212082899U (en) | 2020-04-26 | 2020-04-26 | Coal petrography sample coring fixing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442945A (en) * | 2020-04-26 | 2020-07-24 | 煤炭科学技术研究院有限公司 | Coal petrography sample coring fixing device |
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2020
- 2020-04-26 CN CN202020649946.1U patent/CN212082899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442945A (en) * | 2020-04-26 | 2020-07-24 | 煤炭科学技术研究院有限公司 | Coal petrography sample coring fixing device |
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