RO92913B1 - Drilling bit - Google Patents

Drilling bit

Info

Publication number
RO92913B1
RO92913B1 RO123503A RO12350386A RO92913B1 RO 92913 B1 RO92913 B1 RO 92913B1 RO 123503 A RO123503 A RO 123503A RO 12350386 A RO12350386 A RO 12350386A RO 92913 B1 RO92913 B1 RO 92913B1
Authority
RO
Romania
Prior art keywords
blade
axis
cutting
edges
drilling
Prior art date
Application number
RO123503A
Other languages
Romanian (ro)
Other versions
RO92913A2 (en
Inventor
Atanase Niculescu
Alexandru Radulescu
Gabriel Grigorescu
Gheorghe Ghenghea
Dumitru Ene
Alexandru Moroianu
Original Assignee
îNTREPRINDEREA "1 MAI"
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by îNTREPRINDEREA "1 MAI" filed Critical îNTREPRINDEREA "1 MAI"
Priority to RO86123503A priority Critical patent/RO92913A2/en
Publication of RO92913B1 publication Critical patent/RO92913B1/en
Publication of RO92913A2 publication Critical patent/RO92913A2/en

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  • Earth Drilling (AREA)

Abstract

Inventia se refera la o sapa cu trei lame, folosita pentru forarea unei gauri în roci neconsolidate si/sau slab consolidate. Sapa, conform inventiei, este formata dintr-un corp alcatuit din niste falci unite superior între ele, terminate, fiecare, cu cîte o proeminenta inferioara, prevazuta la rîndul ei cu o suprafata situata într-un plan înclinat fata de un plan vertical pe care este prelucrat un locas, în care se încastreaza si se fixeaza prin sudura cîte una din niste lame, fiecare lama fiind armata cu un material dur, formându-se niste muchii despartite între ele de niste spatii libere cu dimensiuni diferite astfel distribuite fata de axa corpului încît asigura însumarea momentelor rezistente datorate fortelor de aschiere si de frecare pe lama respectiva într-un moment rezultant care se aplica riguros în axa capului si care are o valoare aproximativ egala cu cea a momentului de dislocare transmis de la suprafata, cantitatea de material dur depusa pe muchiile taietoare fiind proportionala cu variatia lucrului mecanic de dislocare a rocii în raport cu distanta fata de axa corpului The invention relates to a three-bladed borehole used for drilling a hole in unconsolidated and / or poorly consolidated rocks. According to the invention, the sap according to the invention consists of a body made up of jaws united superiorly between them, terminated each with a lower projection, provided in its turn with a surface situated in a plane inclined to a vertical plane on which a blade is machined into which one blade is embedded and secured by welding, each blade being armed with a hard material, forming some edges separated from each other by some free spaces with different dimensions so distributed relative to the body axis so as to provide the summation of the stressed moments due to the cutting and friction forces on the respective blade at a resultant moment that is rigorously applied to the head axis and which has an approximately equal value to the displacement moment transmitted from the surface, the cutting edges being proportional to the variation of the mechanical work of dislocating the rock relative to the distance from the axis of the body

RO86123503A 1986-05-29 1986-05-29 POWER DRIVING RO92913A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO86123503A RO92913A2 (en) 1986-05-29 1986-05-29 POWER DRIVING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO86123503A RO92913A2 (en) 1986-05-29 1986-05-29 POWER DRIVING

Publications (2)

Publication Number Publication Date
RO92913B1 true RO92913B1 (en) 1987-10-01
RO92913A2 RO92913A2 (en) 1988-03-30

Family

ID=20119442

Family Applications (1)

Application Number Title Priority Date Filing Date
RO86123503A RO92913A2 (en) 1986-05-29 1986-05-29 POWER DRIVING

Country Status (1)

Country Link
RO (1) RO92913A2 (en)

Also Published As

Publication number Publication date
RO92913A2 (en) 1988-03-30

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