SE457571B

SE457571B - Wood sampling drill for sawdust processing plant

Info

Publication number: SE457571B
Application number: SE8207273A
Authority: SE
Inventors: I Waesterlund; K-B Oebrink
Original assignee: Folab I Katrineholm Ab
Priority date: 1982-12-21
Filing date: 1982-12-21
Publication date: 1989-01-09
Also published as: SE8207273D0; SE8207273L

Abstract

The drilling equipment is fitted on the end of remote-controlled arms, and under load penetrates wood pieces to a depth of at least 1.5 metres, producing sawdust. The dust is taken up via a suction conduit to a cyclone, from which it drops into a collection vessel. It is then investigated as to water and energy contents, and wood properties. The drilling head used has a guide point with angled radial cutters, and a drilling socket with vertical edge blades. The drill is driven by a hydraulic motor via a shaft in the drill tube which has a bearing for it. The radial cutters are formed as vanes which impel upwards the produced sawdust to pass through the suction tube, and have tracks for forming the dust to its correct width and shape. (Provisional Basic advised week 84/32)

Description

457 571 2 uttagning av prov genom borrhàl är ett bättre sätt att ta representativa prover ur träddelstaster, förutsatt att borrspånen kan hämtas ut till ett uppsamlingskärl och att både klent och grovt mate representativa delar. Borren måste vara så konstruerad att borrspànen hämtas ut via ett borrör. Uttransporten av borrspånen kan ske genom skruv- ning, sugning eller en kombination av dessa. Representativiteten känne- tecknas av att borren sönderdelar och tar upp rial kommer med i lastbilslass d,v s 1,3 m mera uppifrån ned i lasten. 457 571 2 sampling through boreholes is a better way to take representative samples from tree part keys, provided that the drill cuttings can be taken out to a collecting vessel and that both small and coarse feed representative parts. The drill must be designed so that the drill cuttings are retrieved via a drill pipe. The drill cuttings can be transported out by screwing, suction or a combination of these. Representativeness is characterized by the fact that the drill breaks down and picks up material that is included in the truck load, ie 1.3 m more from the top down into the load.

Det av borren tillverkade s lek samt ha en rak form för provsmetodik. pånen bör ha en viss maximal längd och stor- att vara lätt blandningsbar och tillåta general- 3 457 571 BESKRIVNING TILL FIGURER Uppfinningen beskrivs nedan i form av ett utföringsexempel i anslutning till bifogade figurer.The play made by the drill and have a straight shape for test methodology. the invention should have a certain maximum length and size, be easily miscible and allow general 3 457 571 DESCRIPTION OF FIGURES The invention is described below in the form of an exemplary embodiment in connection with the accompanying figures.

Figur 1 visar en borrkrona sedd från sidan.Figure 1 shows a drill bit seen from the side.

Figur 2 visar borrkronan enligt figur 1 sedd i riktning mot dess spets.Figure 2 shows the drill bit according to figure 1 seen in the direction of its tip.

Figur 3 visar borrkronan enligt figur 1 sedd 1 riktning mot dess skaft.Figure 3 shows the drill bit according to figure 1 seen in the direction of its shaft.

Borrkronan enligt figurerna består av en styrspets 1, vinkelställda radi- ella skär 2 samt en borrhylsa 3 med vertikala kantskär Ä. Borren drives av en nydraulmotor via en axel i borröret som är försett med lager 5 för borren i sugröret som är stillastående under borrning. De delar av skären 2 som vätter in mot borröret, är utformade som fyra stycken vingar 7, vilka kastar upp tillverkade spånor för lättare uppstransport genom sugröret.The drill bit according to the figures consists of a guide tip 1, angled radial inserts 2 and a drill sleeve 3 with vertical edge inserts Ä. The drill is driven by a new hydraulic motor via a shaft in the drill pipe which is provided with bearing 5 for the drill in the suction pipe which is stationary during drilling. The parts of the inserts 2 which face the drill pipe are designed as four wings 7, which throw up manufactured chips for easier upward transport through the suction pipe.

Borrkronans skaft 6 är gängat för fastsättning på en icke visad drívaxel från hydraulmotorn. Skären 2 är försedda med spår 8 som tjänar till form- givning av spånorna med hänsyn till deras bredd och raka form.The shaft 6 of the drill bit is threaded for attachment to a drive shaft (not shown) from the hydraulic motor. The inserts 2 are provided with grooves 8 which serve to shape the chips with regard to their width and straight shape.

Borrkronan är försedd med en figurslipad styrspets 1. Borrhylsan 3 kan vara försedd med fyra till åtta stycken kantskär 4, symmetriskt placerade i hylsans nedre del, skärande 2 mm utanför borrhylsan i periferiplanet, samt bottenskärande. Runt om borrkronans centrumaxel, 1 skärens 2 för- längning är spiralformiga vingar ínfästade för upptransport av borrspànen.The drill bit is provided with a figure-shaped guide tip 1. The drill sleeve 3 can be provided with four to eight edge inserts 4, symmetrically placed in the lower part of the sleeve, cutting 2 mm outside the drill sleeve in the peripheral plane, and bottom cutting. Around the center axis of the drill bit, 1 the extension of the insert 2, spiral-shaped wings are attached for transporting the drill cuttings.

Skären 2 är ställda i X0 och en släppningsvínkel på Z°. Skärens 2 eggar, liksom kantskärens 4 eggar, är försedda med asymmetriska spår vilka bestäm- mer spànornas bredd. 457 571 METOD Principen är att med en borrutrustning monterad på fjärrstyrda armar upp- ifrån ur lasten upptaga till spån sönderdelade träddelar ned till ett djup av minst 1,5 m, Vertikalt i lasten, varvid det där tillverkade mät- godset upptages via sugledning till en cyklon, där mätgodset faller ned i lämpligt uppsamlingskärl, för bestämning av vatteninnehàll , energiinne- håll eller vedegenskaper, se figurerna.The inserts 2 are set to X0 and a clearance angle of Z °. The 2 edges of the inserts, as well as the 4 edges of the edge insert, are provided with asymmetrical grooves which determine the width of the chips. 457 571 METHOD The principle is that with a drilling equipment mounted on remote-controlled arms from above the load take up to shredded tree parts down to a depth of at least 1.5 m, Vertically in the load, whereby the measured material manufactured there is taken up via suction line to a cyclone, where the measured material falls into a suitable collection vessel, for determination of water content, energy content or wood properties, see the figures.

Exemplet har givits för att närmare förklara uppfinningen, dock ej för att: begränsa uppfinningen till exemplet.The example has been given to explain the invention in more detail, but not to: limit the invention to the example.

Claims

1. 457 571 PATENT REQUIREMENTS Drill bit for taking representative samples from timber loads, rotatably arranged at the lower end of a vertical transport pipe, which is lowered vertically into the loads during sampling and through which the decomposed load material is lifted out of the load, including guide tip (1) extends in extension on the center axis of the drill bit, radial inserts (2) extending outwardly from the center axis and vertical inserts (H) arranged at the periphery of the drill bit which extend substantially parallel to the center axis and which are provided with an edge extending is substantially parallel to the center axis, characterized in that the inserts (2, U) are provided with grooves or recesses (8) which extend in the direction of movement over the outer surface of the respective insert and which break the chips to the desired width and that the grooves (8 ) 1 the inserts (2,0) located on a conical mantle surface with the tip near the guide tip (1) are arranged at different distances from the center axis. The drill bit according to claim 1 is characterized in that wings are attached around the center axis of the drill bit in the extension of the insert, which upon rotation of the drill bit generates an air flow for distributing the drill cuttings, in order to facilitate even upward transport of the drill chips.