CS205283B1 - Mechanism for widening of hole bottom - Google Patents
Mechanism for widening of hole bottom Download PDFInfo
- Publication number
- CS205283B1 CS205283B1 CS208875A CS208875A CS205283B1 CS 205283 B1 CS205283 B1 CS 205283B1 CS 208875 A CS208875 A CS 208875A CS 208875 A CS208875 A CS 208875A CS 205283 B1 CS205283 B1 CS 205283B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- borehole
- widening
- cone
- spring
- shank
- Prior art date
Links
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Description
Predmetom vynálezů je zariadenie na rozširovanie dna vyvrtěv.The subject of the invention is a device for widening the bottom of bores.
Dosial známe zariadenie na rozširovanie dna vývrtov spravidla umožňujú rozšíriť dno vývrtov tak, že váčšia základna kužeřa je.na vzdialenejšej straně od vrt nej tyče. Ďalšie známe zariadenia majú v banskej prevádzke značné poruchy. Mnohé, zvlášť riešené na principe odstředí v-ej sily, resp. pomocou pier, nezabezpečujú dostatočne presne uhol rozširenia, iné sú ríešt né bez ochranného zariadenia před vniknutím nečistot.The prior art borehole widening devices generally allow the borehole bottom to extend so that the larger base of the cone is on the far side of the borehole. Other known devices have significant breakdowns in mining operations. Many, especially designed on the principle of centrifuging their forces, respectively. with the help of lips, they do not provide the angle of enlargement sufficiently precisely, others are designed without a protective device against the ingress of dirt.
Uvedené nedostatky sú odstránené zariadením na rozširovanie dna vývrtov podlá vynálezu, ktorého podstata spočívá v tom, že rozperný kužel, spojený so stopkou pre nasadenie do vrtnej tyče a osadený tlačnou pružinou, je vklíněný medzi čeluste spojené čapom a opatřené pružinou.These drawbacks are overcome by the borehole widening device according to the invention, characterized in that the spacer cone connected to the drill stem shank and fitted with a compression spring is wedged between the jaws connected by a pin and provided with a spring.
Riešením zariadenia na rozširovanie dna vývrtou, založenom na využití rozporného kužela v dolnej časti zariadenia a jeho spojenia so stopkou pre nasadenie do vrtnej tyče sa dosiahne vytvorenie kužela vo vývrte tak, že váčšia základna kužela, vytvořeného rozšířením, je bližšie k ústiu vrtu. Tým sa umožní lepšie ukotveníe svorníka. Ďalej sa vytvoří možnost vzorkovania uhl i a na dne vývrtu vytrháváním.By designing a borehole widening device based on the use of the shred cone at the bottom of the device and its connection with the shank for insertion into the drill rod, the bore cone is formed so that the larger base of the shank cone is closer to the borehole. This allows better anchoring of the bolt. Further, the possibility of sampling the coal and the bottom of the bore by pulling out is provided.
Zariadením na rozširovanieddna vývrtov sa dosiahne správný uhol rozširenia a přesné vytvorenie váčšej základné komolého kužela vo vývrte pri zabezpečenej ochraně vnútorného zaria denia před vniknutím nečistot. Celá konštrukciá je funkčně spolahlivá.The bore expansion device achieves the correct angle of expansion and the accurate formation of a larger truncated cone in the bore while ensuring that the internal device is protected from the ingress of dirt. The whole construction is functionally reliable.
Na priloženom výkrese je na obr. í schématicky znázorněný příklad zariadenia na rozšírenie dna vývrtov v řeze, na obr. 2 je znázorněný rez rozperným kuželom a čeíusťami.In the accompanying drawing, FIG. FIG. 2 is a cross-sectional view of a spacer cone and jaws.
Zariadenie na rozširenie dna ré sa navzájem prekrývajú.The bottom widening devices overlap one another.
vývrcov sa skládá z dvoch r o z.p i na j úc ic h sa čefusti 2>The bores are made up of two ries
Vonkajšia strana ich plášťov je opatřená nožmi 8, ktoré mažu byt Čeluste 2 sú otočné uložené na čapě 2» ktorý móže maí v stredovej část tica 2 Je spojená s patkou 2 závitovým spojom. Pružina 5_ spája čeltisu· 2 je upevněná podložka b. TLačná pružina 2 spája podložku b_ a rozporný so stopkou 22· Rozpěrný kužel 10 obsahuje drážky pre osadenie jednej z zhotovené z tvrdokovov. i stvorcový prierez. M a 2 · Na jednej z čefusti k u ž e Γ 1 O je spojený čefusti 9 .The outside of the mantle is provided with blades 8, the two-jaw 2 deleting the account rotatably mounted on the pin 2 »which may have in the central portion of tuple 2 I t is connected to the foot 2 threaded connection. The spring 5 joining the jaw 2 is a fixed washer b. The cushioning spring 2 connects the washer b and is inconsistent with the shank 22. The expanding cone 10 comprises grooves for mounting one of the hardmetals. and square cross section. M and 2 · On one of the jaws of the skin Γ 1 O, the jaws 9 are connected.
Po vyvrtaní válcového otvoru norraálnou korunkou sa na koniec vrtnej tyče uchytí stopka 1 1 , spojená rozperným kužeTora 1 Q . Pátka 2 sa osovým prítlakom pracovníka oprie o dno vývrtu a čeluste 2 sa rozpierajú, přitom sledujú pri pohybe povrch rozperného kužefa 10, ktorý zároveň zabraňuje vnikaniu nečistot do vnútra zariadenia na rozšírovanie dna vývrtov a súčasne prenáša svojím tvarom krútiaci moment na Čeluste 9.After drilling a cylindrical bore with a dowel crown, a shank 11 connected to the end of the drill rod is attached to the end of the drill rod 1, connected by a tapered cone 10. The fridges 2 are supported by the axial thrust of the operator on the bore bottom and the jaws 2 expand while following the movement of the spreader cone 10, which at the same time prevents dirt entering the interior of the borehole widening device while transmitting the jaw 9 torque.
Osový tlak na rozpěrný kužel 10 cez stopku 22» ktorá je uchytená vo vrtnej tyči, vyvodzuje pracovník vrtacím zariadenim. Přitom rozpěrný kužel 10 pri súčasnom otáčaní vniká raedzi čeíuste 2» ktoré rozšiřuje. Stabilizácia pátky 2» ktorá je přitom opretá o horninu, je zabezpeče ná prostredníctvoro stojky 2» takže patka sa neotáca. Po ukončení působenia tlaku vrátí čefuste do původnej polohy pružina 2 a tlačná pružina 7_ a zariadenie na rozšírovanie dna vývrtov je možno pohodlné vytiahnuť z vývrtu.The axial pressure on the expander cone 10 through the shank 22, which is retained in the drill rod, is exerted by the operator by the drilling device. At the same time, the expansion cone 10, while rotating, penetrates the rim of the jaw 2 which it widens. The stabilization of the footing 2, which is supported on the rock, is provided by the support 2 so that the footing does not rotate. After the pressure has been exerted, the spring 2 and the compression spring 7 return the jaws to their original position and the bore bottom widening device can be conveniently removed from the bore.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS208875A CS205283B1 (en) | 1975-03-27 | 1975-03-27 | Mechanism for widening of hole bottom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS208875A CS205283B1 (en) | 1975-03-27 | 1975-03-27 | Mechanism for widening of hole bottom |
Publications (1)
Publication Number | Publication Date |
---|---|
CS205283B1 true CS205283B1 (en) | 1981-05-29 |
Family
ID=5356945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS208875A CS205283B1 (en) | 1975-03-27 | 1975-03-27 | Mechanism for widening of hole bottom |
Country Status (1)
Country | Link |
---|---|
CS (1) | CS205283B1 (en) |
-
1975
- 1975-03-27 CS CS208875A patent/CS205283B1/en unknown
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