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WO1984001827A1 - Instrument de sondage permettant d'enlever un noyau d'echantillonnage - Google Patents

Instrument de sondage permettant d'enlever un noyau d'echantillonnage Download PDF

Info

Publication number
WO1984001827A1
WO1984001827A1 PCT/SE1982/000348 SE8200348W WO8401827A1 WO 1984001827 A1 WO1984001827 A1 WO 1984001827A1 SE 8200348 W SE8200348 W SE 8200348W WO 8401827 A1 WO8401827 A1 WO 8401827A1
Authority
WO
WIPO (PCT)
Prior art keywords
boring
tube
cutting edge
sample
instrument according
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/SE1982/000348
Other languages
English (en)
Inventor
John Koskiniemi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority to SE8102670A priority Critical patent/SE444082B/sv
Application filed by Individual filed Critical Individual
Priority to PCT/SE1982/000348 priority patent/WO1984001827A1/fr
Priority to EP19820903346 priority patent/EP0122912A1/fr
Publication of WO1984001827A1 publication Critical patent/WO1984001827A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit

Definitions

  • the present invention relates to a boring instrument for removing a sample core.
  • the sample-boring instrument is preferably intended to be used, for example, for checking the growth of timber, for monitoring impregnation, for determining moisture levels, for taking samples of dry rot, for taking samples of mould, for monitoring the depth of rot damage, for determining the quality of timber or assessing the core of wood, but the instrument may more generally be used for porous materials whenever it is desired to obtain a bored core of varying length.
  • Instruments known previously such as growth bores, for example, cannot be used in connection with finished timber material without causing damage to the material which is located adjacent to the bore-hole. Moreover, it is often very difficult to set up existing instruments and to hold them when access is difficult and the space confined. Moreover, it is difficult to set up the instrument very accurately in a precise specific position. Furthermore, bored cores which have been removed fall apart very easily, with the ris of disorientation of their sections, which can give rise to totally false results from special analyses of the bored cores.
  • the main object of the invention is to provide an instrument of the kind described above which is easy to use and with which it is possible to remove in an expedient way slender, long and coherent bored cores from timber and other material and to transfer this bored core from the instrument without touching it, for example, to a sealed container, so that the removed core can afterwards be analysed without contamination, and with which a large number of samples can be taken in a rationalised way in a short period of time.
  • sample-boring instrument constructed according to the invention, which is primarily characterised in that it consists both of a tubular boring body, one end section of which is formed with a cutting edge extending round the end of the tube, and also of a centring and ejecting rod which is movably guided inside the tube, the terminal positions of this rod being chosen so that the end of the rod located nearest to the cutting edge can be displaced from a position wherein it is retracted inside the tube into an outer position in which the said end is located outside the cutting edge.
  • a sample-boring instrument constructed according to the invention may conceivably be used, for example, in various research institutes, monitoring organisations, in the impregnation industry, in the cabinet-making industry or other timber-related industries, by electricity distributors for checking pole-lines, by re-impregnation firms, by saw-mills, by protection firms, for example, in connection with windows and by forestry companies, amongst others.
  • Figure 2 is a side view of a part appertaining to the sample-boring instrument shown in Figure 1,
  • Figure 3 is a perspective view of the cutting part of the sample-boring instrument, shown on a larger scale
  • Figure 3a is a longitudinal section through a portion of the cutting edge on the part shown in Figure 3,
  • Figure 3b is a longitudinal section through another portion of the cutting edge on the same part
  • Figure 4 is a side view of the part shown in Figure 3
  • Figure 5 is a partially-sectioned perspective view of the instrument, wherein the parts appertaining to the instru ment are shown in the same relative position as in Figure 1,
  • Figure 6 is a partially-sectioned perspective view of the instrument while it is being set up against the object out of which a sample is to be bored,
  • Figure 7 is a perspective view of the instrument during the first phase of being driven into the object from which a sample is to be bored
  • Figure 8 is a partially-sectioned perspective view of the same instrument after it has been removed from the said object from which a sample is to be bored
  • Figure 9 is an end view of the cutting part of the tool
  • Figure 9a is a longitudinal section showing the cutting angle at a section of the cutting edge of the tool
  • Figure 9b shows the angle of the cutting edge at anothe section of the cutting edge of the tool
  • Figure 10 shows the cutting edge line of the tool, developed
  • Figure 11 is a Table giving an example of how the cutting edge curve of the tool can be developed.
  • the instrument shown on the Drawing consists of three main parts, the first of these being a boring tube which is designated 1 as a whole, the second being a centring and ejecting rod which is designated 2 as a whole and the third being a supporting sleeve which is designated 3 as a whole.
  • the boring tube 1 is preferably thin-walled.
  • a suitable material thickness may be approximately 0.5 mm with an external diameter of approximately 9 mm.
  • the boring tube has a thicker section which is formed by a gradual reduction of the internal diameter of the tube towards the front, and a gradual increase in the external diameter.
  • the end edge 5 of the tube is ground to an undulating shape which is shown most clearly in Figures 3 and 4, with an outwards-facing bevelled surface 6, 7. Due to the acute angles ⁇ , ⁇ formed with the internal wall of the tube, the bevelled surface 6, 7 forms a cutting edge extending over the circumference of the tube, in the form of two wave-tops 8, 9 with two wave-valleys 10, 11 located between them.
  • the wave-top 8 is somewhat higher than the wave-top 9.
  • Tbe cutting angle ⁇ at the wave-top 8 and the parts adjoining it, i.e. the parts of the circumference which extend downwards to the wave-valleys 10, 11, is preferably acute, as is clearly shown in Figures 3b and 9b.
  • the angle of the cutting edge is preferably between 25° and 35°.
  • a suitable angle for the cutting edge has been found to be approximately 28°.
  • the cutting edge angle at the wave-top 9 and the sections adjoining it, i.e. the sections which extend downwards into the wave-valleys 10, 11, are slightly blunter than the former angle, as can be seen in Figures 3a and 9a.
  • This cutting edge angle expediently lies somewhere between 40° and 50°.
  • a suitable cutting edge angle has been found to be approximately 45°.
  • the lower wave-top 9 and the adjoining parts of the cutting edge serve mainly for compressing the material.
  • the material is compressed both in an outwardly direction and in an inwardly direction.
  • the blunter the cutting edge angle ⁇ the greater is the amount of material compressed inwards, and vice versa.
  • the boring tube Towards the rear the boring tube has a thicker section 12 which has the same internal diameter as the rest of the tube, and which is cylindrical on the outside.
  • the boring tube is mounted via the rear thicker section 12 so that it can be displaced in a supporting sleeve 13, the internal diam r of which exceeds the external diameter of the rear thicker section 12 of the boring tube by an amount sufficient to give a sliding fit.
  • a pin-shaped part 14 is welded to the supporting tube 13, for use as a chuck fitment when a drilling machine is used to rotate the instrument, for example.
  • the centring and ejecting rod 2 is mounted displaceably in the boring tube.
  • the ejecting rod has a front section 15, an intermediate section 16 and a rear sec tion 17.
  • the intermediate section 16 has an external diameter which is sufficiently less than the internal diameter of the boring tube 1 to give a sliding fit, while its front end section 15 has an external diameter which is less than the internal diameter of the boring tube by a slight amount of play, and its rear end section 17 has an external diameter which corresponds approximately to the internal diameter of the supporting sleeve 13.
  • the rear section of the rod 2 is locked into the supporting sleeve by means of a locking screw 18 screwed into the supporting sleeve.
  • the rod 2 is formed with a centrally disposed con ical pin 19 which continues at its base into a concave surface on the front end of the rod.
  • the transi tion between the sections 17 and 16 of the rod 2 forms a forwards-facing shoulder 20 and at the rear the thicker section 12 of the boring tube forms a backwards-facing shoulder 21.
  • a compression spring 22 is hraced.
  • In the supporting sleeve 3 there is a slit 23 extending longitudinally along it, having at the front an end section 23a which is angled counter to the direction of rotation.
  • the supporting sleeve is surrounded by a running sleeve 24, the internal diameter of which corresponds to the external diameter of the supporting sleeve, with a sliding fit.
  • a transverse entrainment screw 25 which is screwed into the running sleeve 24 and preferably also into the thickened section 12 of the boring tube the running sleeve 24 is connected to the boring tube via the slit 23 in the supporting sleeve.
  • the entrainment screw 25 is held in its screwed-in position by means of a stop screw 26 which is screwed in from the front end of the running sleeve 24.
  • the running sleeve is also surrounded by a gripping sleeve 27 which consists of a front half 27a and a rear half 27b.
  • the ends of the running sleeve 24 form a forwards-facing and a backwards-facing shoulder which co-act respectively with corresponding backwardsfacing and forwards-facing shoulders on the front and rear halves of the gripping sleeve respectively.
  • the two halves of the gripping sleeve are expediently connected to each other by means of a longitudinal screw connection.
  • the internal diameter of the gripping sleeve is adapted so that it can be rotated easily on the running sleeve 24.
  • This construction means that the running sleeve 24, the supporting sleeve 3 and the boring tube 1 are connected to each other rotationally fixed via the entrainment screw 25.
  • the running sleeve 24 and the boring tube 1 are also connected immovably to each other via the entrainment screw 25, while they can be displaced in the longitudinal direction relative to the supporting sleeve 3 due to the fact that the entrainment screw 25 can move along the slit 23.
  • the rotational force which is transmitted from a drive source such as a mechanical drill, for example, to the supporting sleeve 3 is transmitted further via the entrainment screw 25 to the boring tube due to the fact that the entrainment screw 25 rests against the sides of the slit 23.
  • the gripping sleeve 27 is not axially displaceable relative to the running sleeve 24, due to the mutual abutment effect between them but on the other hand it can rotate relative to the running sleeve 24.
  • the gripping sleeve 27 can be held by the operator in one hand and guided in the longitudinal direction of the supporting sleeve provided that the entrainment screw is not located in the laterally-angled end section 23a of the slit.
  • the gripping sleeve 27 can be moved in its longitudinal direction irrespective of the displacement position in which the entrainment screw 25, which acts as an entrainment pin, is located.
  • the compression spring 23 strives to move from the boring sleeve into the position shown in Figure 1 in which the centring and ejecting rod 2 is located in its rear position, fully retracted into the boring tube. To ensure that there is a good grip on the gripping sleeve 27, this may be provided with a gripping surface on the outside.
  • the instrument can be used expediently connected into the chuck of a mechanical drill or a drilling brace (not shown on the Drawings) by fixing the pin 14 in the chuck.
  • the tool is set up against the object 28 from which a sample is to be bored, after the boring tube has been pulled backwards relative to the centring rod 2, against the effect of the spring 22, by moving the gripping sleeve 27 in the direction of the mechanical drill so that the end section of the centring rod 2 projects slightly beyond the cutting edge 8 of the boring tube. While the mechanical drill and thus also the centring rod 2 are pressed transversely against the workpiece, the gripping sleeve 27 is moved forwards, this movement being enhanced by or effected entirely by pressure from the spring 22.
  • the strength of the spring 22 is preferably adapted so that it is able to force the boring tube in to a depth of a few millimetres on its own, after which the boring tube is driven in further while the centring rod is held resting transversely against the workpiece, by moving the gripping sleeve 27 forwards manually, the spring 22 providing additional force to aid this movement.
  • the cutting edge of the boring tube thus displaces freed material to the bored core and the surrounding material by compression.
  • the bored core can thereafter be removed from the boring tube by moving the gripping sleeve 27, and with it also the boring tube, backwards relative to the supporting sleeve 3.
  • the ejecting rod 2 thereby pushes the bored core out of the boring tube 1.
  • the boring tube can expediently be provided with a longitudinal slit terminating with its outlet at the cutting edge, thereby protecting the bored core from any high level of friction and from diorientation of its sections.
  • the instrument shown on the Drawings is primarily designed to be used for free-hand drilling, but it can of course also be clamped in a holder, for example.
  • the released bored core can be transferred to a closed or open vessel without manual or mechanical contact which might involve contamination of the material or disorientation of its various sections.
  • Due to the centrally positioned centring point 19 very exact positioning of the cutting edge is obtained relative to the object from which a sample is to be taken.
  • a circular cutter is obtained which does not create shavings, and the movement of which is very reliably determined by the centring rod so that the risk of chopping at the point of the bore and damage to the surround ing surface and material is eliminated, which means that it is possible to work much nearer glass and metal, etc.
  • the construction described above enables boring tube ends with a saw-toothed or milled cutting edge to be used as well.
  • the point of the boring tube can be made with a section such that the effective parts can be replaced or the point of the boring tube extended.
  • the compression spring 22 is replaced with some other elastic/expanding material it is possible to vary the length of the bored core even more, with one and the same centring rod in one and the same supporting sleeve.
  • the boring point can be attached to a flexible shaft which contains another flexible shaft which functions as the centring and ejecting rod.
  • a suitable length for the centring point 19 is approximately 2 mm.
  • Figure 9 the point of the boring tube is divided up by a number of lines a-11.
  • Figure 10 the cutting edge curvature is shown, and this can also be read off in the Table shown in Figure 11.
  • Figure 9b shows the acute cutting edge angle ⁇ which applies within the range a-q in Figure 10
  • Figure 9a shows the blunter cutting edg angle ⁇ , which applies within the range q-a in Figure 10.
  • the extent of the two respective cutting edge angles is also marked with arcs of a circle in Figure 9.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Earth Drilling (AREA)

Abstract

L'instrument de sondage à échantillon de l'invention est d'une utilisation aisée même dans des espaces resserrés et permet de manipuler une carotte ou noyau détaché par perçage avec un tel degré de précaution que l'orientation du noyau n'est pas modifiée par l'action mécanique et que le noyau n'est pas contaminé par le contact avec des corps étrangers. Selon l'invention, l'instrument de sondage à échantillon consiste en un corps de perçage tubulaire (1) dont une section extrême est conçue avec un bord tranchant (5) s'étendant autour de la surface extrême du tube, et une tige de centrage et d'éjection (2) laquelle est guidée de manière mobile à l'intérieur du tube et dont les positions terminales sont choisies de sorte que l'extrémité de la tige située la plus près du bord tranchant peut se déplacer d'une position dans laquelle elle est rétractée à l'intérieur du tube vers une position extérieure dans laquelle ladite extrémité est située à l'extérieur du bord tranchant.
PCT/SE1982/000348 1981-04-24 1982-10-25 Instrument de sondage permettant d'enlever un noyau d'echantillonnage Ceased WO1984001827A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8102670A SE444082B (sv) 1981-04-24 1981-04-24 Kernavskiljande provborrinstrument foretredesvis avsett att anvendas i samband med provtagning i trevirke och liknande
PCT/SE1982/000348 WO1984001827A1 (fr) 1981-04-24 1982-10-25 Instrument de sondage permettant d'enlever un noyau d'echantillonnage
EP19820903346 EP0122912A1 (fr) 1981-04-24 1982-10-25 Instrument de sondage permettant d'enlever un noyau d'echantillonnage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8102670A SE444082B (sv) 1981-04-24 1981-04-24 Kernavskiljande provborrinstrument foretredesvis avsett att anvendas i samband med provtagning i trevirke och liknande
PCT/SE1982/000348 WO1984001827A1 (fr) 1981-04-24 1982-10-25 Instrument de sondage permettant d'enlever un noyau d'echantillonnage

Publications (1)

Publication Number Publication Date
WO1984001827A1 true WO1984001827A1 (fr) 1984-05-10

Family

ID=26657867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1982/000348 Ceased WO1984001827A1 (fr) 1981-04-24 1982-10-25 Instrument de sondage permettant d'enlever un noyau d'echantillonnage

Country Status (3)

Country Link
EP (1) EP0122912A1 (fr)
SE (1) SE444082B (fr)
WO (1) WO1984001827A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001004599A1 (fr) * 1999-07-13 2001-01-18 V.I. Technologies, Inc. Dispositif de carottage
WO2014033200A1 (fr) * 2012-08-31 2014-03-06 Ge Healthcare Uk Limited Améliorations apportées à des outils de coupe et améliorations relatives auxdits outils pour la préparation d'échantillons
WO2016058650A1 (fr) * 2014-10-15 2016-04-21 Iml Instrumenta Mechanik Labor Gmbh Outil de contrôle du bois et procédé de contrôle visuel d'un objet en bois
CN107542402A (zh) * 2017-09-06 2018-01-05 中国科学院武汉岩土力学研究所 一种垃圾填埋场用钻机
CN115575169A (zh) * 2022-10-03 2023-01-06 段如伟 一种水文地质钻式探测装置及探测方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118545269B (zh) * 2024-07-29 2024-11-29 内蒙古电投能源股份有限公司 一种基于无人机的矿山采样装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125883A (en) * 1964-03-24 Coring tool
SE421655B (sv) * 1978-03-01 1982-01-18 Lars G Eriksson Provtagare for friktionsjord

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125883A (en) * 1964-03-24 Coring tool
SE421655B (sv) * 1978-03-01 1982-01-18 Lars G Eriksson Provtagare for friktionsjord

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001004599A1 (fr) * 1999-07-13 2001-01-18 V.I. Technologies, Inc. Dispositif de carottage
WO2014033200A1 (fr) * 2012-08-31 2014-03-06 Ge Healthcare Uk Limited Améliorations apportées à des outils de coupe et améliorations relatives auxdits outils pour la préparation d'échantillons
US10065251B2 (en) 2012-08-31 2018-09-04 Ge Healthcare Uk Limited Cutting tools for sample preparation
WO2016058650A1 (fr) * 2014-10-15 2016-04-21 Iml Instrumenta Mechanik Labor Gmbh Outil de contrôle du bois et procédé de contrôle visuel d'un objet en bois
US10302622B2 (en) 2014-10-15 2019-05-28 Iml Instrumenta Mechanik Labor Gmbh Wood test tool and method for visually checking a wood object
CN107542402A (zh) * 2017-09-06 2018-01-05 中国科学院武汉岩土力学研究所 一种垃圾填埋场用钻机
CN107542402B (zh) * 2017-09-06 2019-02-12 中国科学院武汉岩土力学研究所 一种垃圾填埋场用钻机
CN115575169A (zh) * 2022-10-03 2023-01-06 段如伟 一种水文地质钻式探测装置及探测方法

Also Published As

Publication number Publication date
SE444082B (sv) 1986-03-17
SE8102670L (sv) 1982-10-25
EP0122912A1 (fr) 1984-10-31

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