EP0544606B1 - Penetrometerkopf mit Gehäuse, und seine Anwendung - Google Patents

Penetrometerkopf mit Gehäuse, und seine Anwendung Download PDF

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Publication number
EP0544606B1
EP0544606B1 EP92420438A EP92420438A EP0544606B1 EP 0544606 B1 EP0544606 B1 EP 0544606B1 EP 92420438 A EP92420438 A EP 92420438A EP 92420438 A EP92420438 A EP 92420438A EP 0544606 B1 EP0544606 B1 EP 0544606B1
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EP
European Patent Office
Prior art keywords
measuring head
penetrometer
sleeve
meters
central rod
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Expired - Lifetime
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EP92420438A
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English (en)
French (fr)
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EP0544606A1 (de
Inventor
Michel Petit-Maire
Francis Bardot
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AMAP'Sols ATELIERS MOBILES D'AUSCULTATION PAR PENETRATION DES SOLS SA
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AMAP'Sols ATELIERS MOBILES D'AUSCULTATION PAR PENETRATION DES SOLS SA
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil

Definitions

  • the present invention relates to the field of technical means, commonly called penetrometers, and designed to allow the performance of penetration tests for the recognition of a ground or a ground, with a view to determining its condition and its quality in particular, with regard to density, compactness, strength and hardness.
  • a penetrometer is adapted to allow the insertion into the ground of a probe placed at the lower end of a train of tubes or rods ensuring the transmission of forces to a measuring head located at the top of this drill string.
  • This head makes it possible to measure, during the vertical insertion of the probe, various parameters necessary to recognize the condition or the quality of the ground probed.
  • the lower element of the drill string comprises a probe consisting of a small point, extended by a central rod, and a large point extending the small point and carried by an intermediate tube concentrically surrounding the central rod.
  • the intermediate tube is mounted inside a protective barrel concentric with the intermediate tube.
  • the measuring head is capable of determining the peak force exerted on the small and / or on the large point, the resistance acting on the side wall of the probe and the resistance acting on the entire drill string.
  • Such measurements are made, mainly, during an operation, called static driving, during which a continuous pressure is exerted on the top of the drill string, generally using hydraulic cylinders.
  • Patent FR 2 271 343 discloses such a penetrometer ensuring static driving and dynamic driving.
  • This penetrometer has a fixed structure, provided with vertical slides serving as guides for a mobile carriage controlled in downward or upward movement, by means of two hydraulic cylinders.
  • This mobile carriage is equipped with a threshing hammer acting on an anvil slidingly mounted in slides carried by the mobile frame. Between this anvil located under the sheep, and the top of the train of tubes, is interposed the measuring head capable of performing the various measurements during the static driving operation. For the dynamic driving operation, this measuring head is removed.
  • the patent described above aims, precisely, to replace the manual operation of disassembly and reassembly of the measuring head, by an automatic operation, in order to facilitate such assembly and disassembly operations. It should be noted that the mounting and dismounting of the measuring head must be carried out a large number of times during a survey, due to the implementation, alternately, of static driving and dynamic driving.
  • the above patent proposes to implement a penetrometer frame, the fixed structure of which is articulated around a horizontal axis offset from the axis of the train of tubes.
  • the fixed structure of the frame pivots or swivels around its horizontal axis.
  • the tilting of the fixed structure of the frame is used to automatically bring the measuring head into a position of non-use.
  • the mobile carriage is lowered by means of its two control jacks to bring the measuring head, during its descending trajectory, in relation to a support for support and centering.
  • the reverse movements are then carried out to bring the mobile carriage into alignment with the drill string, so as to authorize the dynamic driving operation.
  • the jacks are controlled according to the movement described above, in order to ensure the loading of the measuring head on the mobile carriage, with a view to bringing it to the top of the drill string.
  • the measuring head undergoes vibrations, or even shocks, during its assembly and disassembly on the mobile carriage and on the support for holding in the non-use position.
  • the sensitive components of the measuring head are then no longer capable of ensuring reliable, reliable and reliable measurements during soil probing operations.
  • Such constraints impose the implementation of repeated calibrations, or even the replacement of certain components of the measuring head, which negates the advantages of such an automatic solution compared to a manual solution for dismantling and mounting the measuring head.
  • the described measuring head is adapted to be implemented, mainly, with a given type of rods and probes, which limits the applications of this measuring head.
  • the object of the present invention therefore aims to remedy these drawbacks by proposing a measuring head for a penetrometer, arranged so as to remain in a fixed position during static driving and dynamic driving operations.
  • the measuring head according to the preamble of claim 1 makes it possible to measure, along a measurement axis, the forces transmitted to a drill string during their penetration or tearing, the measuring head comprising at least a first means for capturing the forces transmitted by at least one of the constituent elements of the drill string.
  • the measuring head comprises at least one inner sheath defining a passage passing through the measuring head right through, along the measuring axis, and adapted to allow free sliding, with play, for a shaft of threshing driven in alternating movements by means of a threshing apparatus and equipped, at its terminal part, with a temporary assembly means with an element constituting the drill string, the inner sheath ensuring the transmission of the forces between the 'at least one of the constituent elements of the drill string and the first means for capturing the corresponding transmitted forces.
  • the measuring head also comprises an outer sheath surrounding the inner sheath at a distance and ensuring the transmission of forces between at least one of the constituent elements of the drill string and a second means for picking up the corresponding transmitted forces.
  • the inner and outer sleeves of the measuring head each have a threaded end portion intended to ensure the fitting of tools suitable for static driving with a complete drill string or only with the central rod.
  • Object of the invention also aims to provide a threshing shaft freely passing through the measuring head and intended to be temporarily assembled to the central rod, by means of a corresponding tool.
  • the object of the invention thus allows the passage from a static driving mode to a dynamic driving mode by simply changing the connecting tools between the various constituent elements of the drill string and the threshing shaft or the measuring head.
  • the invention also aims to provide a penetrometer frame equipped with a threshing device preferably consisting of a hydraulic hammer which offers the advantage of having an adjustable striking frequency.
  • Fig. 1 is an exploded perspective view showing a penetrometer according to the invention.
  • Fig. 2 is a sectional elevation view showing the penetrometer being inserted into a drill string.
  • Fig. 3 is a sectional elevation view of a penetrometer illustrated in a characteristic position.
  • Fig. 4 is a sectional view of a measuring head according to the invention.
  • Fig. 5 is a bottom view taken substantially along the lines VV of FIG. 4.
  • Fig. 6 is a sectional view of the measuring head according to the invention, equipped to operate in static driving mode with the complete set of tubes.
  • Fig. 7 is a partial view of the measuring head equipped for driving in static mode with only the central rod of the drill string.
  • Fig. 8 is a view, similar to FIG. 7 , showing another alternative embodiment of the measuring head ensuring operation in static mode, only with the central rod.
  • Fig. 9 is a partial view, in sectional elevation, of another alternative embodiment of a measuring head according to the invention.
  • Fig. 10 is a bottom view of the variant illustrated in FIG. 9 and taken substantially along lines XX.
  • the penetrometer comprises a fixed frame 1 constituting a rigid structure capable of being adapted, by its base 2, on a vehicle chassis.
  • the frame 1 is adapted to support a guide structure 3 oscillating about a horizontal axis a and comprising two symmetrical slides 4, normally vertical, intended to serve as a guide for a mobile carriage 5 moved in upward or downward sliding, by the intermediate of two hydraulic cylinders 7.
  • These cylinders are articulated on the frame 1 around a horizontal axis a ' and on the upper cross member 8 of the movable carriage 5, along a horizontal axis b .
  • the mobile carriage 5 is equipped with a threshing apparatus 12 and a measuring head 13, placed below the threshing apparatus and fixed, for example, on the underside of a bottom cross member 14 of the mobile carriage 5.
  • the measuring head 13 is placed at the top of a train T of sections of rods or of penetration tubes 14 1 , 14 2 ... 14 n ensuring the insertion, in a ground or ground S , a penetration probe placed at the lower end of the drill string. The back pressure exerted on the probe and transmitted by the drill string is measured by the head 13.
  • the lower section 14 1 of the drill string is equipped with the probe consisting of a small point 16 extended by a central rod 17 and a large point 18 extending the cone of the small point and provided with an intermediate tube 19 surrounding the central rod 17.
  • the intermediate tube 19 is surrounded by a protective barrel 20.
  • the lower section 14 1 is pressed into the ground, according to a given depth, by mounting end to end sections of rods 14 2 ... 14 n , each consisting of a barrel 20, an intermediate tube 19 and a central rod 17, connected to the rods and the barrels of the lower sections.
  • the mobile carriage 5 is subjected, via the jacks 7, to a significant pressure causing it to move down.
  • a first mode of penetration called static driving
  • the mobile carriage 5 causes the downward movement of the train T of rods via the measuring head 13.
  • the threshing device 12 must be used to continue the insertion of the drill string inside of the ground.
  • the measuring head 13 is arranged to remain in position on the carriage 5 when switching from static driving mode to dynamic driving mode, and vice versa.
  • the measuring head 13 is arranged to include a passage 22 passing right through it, along an axis 23 which is parallel to the measuring axis represented, for example, by the penetration axis of the drill string.
  • the passage 22 is adapted to allow the free sliding, with play, of a threshing shaft 24 urged in alternating movement by means of the threshing apparatus 12.
  • the shaft 24 passes through the lower cross member 14 of the carriage 5, by a bore 25 occupied by two pins 26 mounted tangentially with respect to the shaft 24.
  • the pins 26 extend inside a groove 27 formed on the shaft 24, so as to allow the retention of the latter in the down position.
  • the threshing shaft 24 is equipped, at its end part, with a means 28 for temporary assembly with the central rod 17.
  • the threshing shaft 24 is assembled with the central rod by the through a dynamic driving tool 30 consisting of a bolt 31 screwed onto the means 28 consisting of a thread.
  • the tool 30 also includes a threshing pin 32 connected by screwing to the central rod 17 and partially engaged in a housing 33 formed in the chuck 31.
  • the nipple 32 is kept assembled with the chuck 31 by means of a threaded ring 34.
  • the snap 31 carries, on its outer wall, flats 35 to facilitate its operation by a key 36.
  • the measuring head 13 according to the invention is thus not dismantled during the dynamic driving operation, while not undergoing any deterioration or mechanical stress.
  • the transition from a static driving mode to a dynamic driving mode consists, only, in putting in place the assembly tool 30, between the threshing shaft 24 and the central rod 17.
  • the pursuit of penetration, in a static mode simply consists in carrying out the dismantling of the tool 30 and in ensuring the connection of the measuring head with the various elements of the drill string. It should be noted that, during this dynamic driving operation, the measurement of the pull-out resistance of the drill string can be assumed by means of pressure sensors fitted to the jacks 7.
  • the measuring head 13 is also designed to ensure the various measurements made during penetration in static mode.
  • the measuring head 13 comprises at least one inner sheath 37 delimiting the passage 22 for the threshing shaft 24.
  • the sheath 37 ensures the transmission of forces between at least one of the constituent elements of the drill string and a first means 38 for capturing the transmitted forces.
  • the inner sleeve 37 is extended by a flange 38 ' coming to bear on at least one, and in the example illustrated, three force sensors 39 grouped together to form the first detection means 38. Tel that this appears more precisely in fig. 5, the collar 38 has a polygonal and substantially triangular section in the example illustrated, the vertices of which each rest on a corresponding sensor 39 .
  • the measuring head 13 includes at least one outer sheath 40 concentrically surrounding the inner sheath 37 and ensuring the transmission of forces between at least one of the constituent elements of the drill string and a second plea 42 to capture the corresponding transmitted forces.
  • the outer sheath 40 includes a collar 43 also having a polygonal section, triangular in nature in the example illustrated, bearing on three sensors 45 grouped together to form the second detection means 42.
  • the flanges 38 and 43 are angularly offset, as illustrated in FIG. 5, so as to allow the interlaced mounting of the sensors 39, 45 arranged in a circle.
  • the sensors 39, 45 are connected by screws 47 and 48, respectively, to the inner sleeve 37 and to the outer sleeve 40.
  • the sensors 39, 45 are held, by screws 49, on a common mounting plate 51 adapted by means assembly 52, below the lower cross member 14 of the mobile carriage 5.
  • the force sensors are of the type, for example, with strain gauges.
  • the measuring head thus formed is intended to be associated with a tool 55 for static driving with the complete drill string.
  • This tool 55 is constituted by a threaded ring 56 cooperating with a thread 57 formed in the outer sheath 40.
  • the ring 56 is intended to come to bear on the guide barrel 20, in order to allow the measurement of the friction force by the associated sensors 45 .
  • the tool 55 also includes a threaded end 58 cooperating with a thread 59 of the inner sleeve 37.
  • the end piece 58 is intended to come to bear on the central rod 17 and on the intermediate tube 19, in order to ensure the measurement of resistance to penetration by the associated sensors 39 .
  • the threshing shaft 24 penetrates inside the sheath 37, in the rest position, on a given measure authorizing the fitting of the end piece 58 on the sheath 37.
  • the end part of the shaft 24 recedes relative to the bottom of the internal thread 59, when the shaft occupies its lower maximum position corresponding to that where the pins 26 are located resting on the high sides of the groove 27.
  • the ring 56 allows, depending on its degree of screwing in the sleeve 40, to adjust the gap between the probe and the barrel, and thus compensate for the offsets likely to '' intervene between the elements when they are placed end to end.
  • the measuring head according to the invention is also intended to be associated with a tool 60 for static driving performed only with the central rod 17 of the drill string.
  • This static driving is implemented when penetration with the complete drill string is no longer possible.
  • the tool 60 is constituted by a threaded end 61 connected to the inner sleeve 37 and coming to bear on a threaded end 62 which is assembled with the central rod 17, in order to allow the measurement of the resistance to penetration by the associated sensors 39 .
  • the tool 60 also includes a threaded ring 64 assembled with the outer sheath 40 and supporting the end piece 62 linked to the central rod, so that during a tearing operation, the ring 64 drives in displacement the endpiece 62, in order to allow the measurement of the friction force by the associated sensors 45.
  • Fig. 8 illustrates another alternative embodiment of a static driving tool 60 ′ produced only with the central rod 17.
  • This tool consists of a ring 70 linked to one of the sleeves and, for example, with the outer sleeve 40.
  • This ring 70 is supported on a stud 71 linked by screwing to the central rod 17, thus allowing the measurement of the resistance to penetration by the sensors 45.
  • the stud 71 is mounted integral with the ring 70, via 'a threaded ring 73, so that during the tearing operation, the stud 71 and the ring 70 are moved to allow the measurement of the friction force by the sensors 45 associated with the sleeve and then working in traction.
  • the measuring head 13 makes it possible to limit the operations necessary to switch from a static driving mode to a dynamic driving mode, while allowing to have a head capable of measuring all the parameters necessary during the insertion of the probe.
  • the measuring head 13, which occupies a fixed position during all the static and dynamic driving operations, while not undergoing mechanical stresses, offers the advantage of making reliable measurements.
  • the measuring head according to the invention has the advantage of being able to be adapted to the top of a string of rods or probes having various structures, characteristics or applications other than those described, by way of example , in the description above.
  • the measuring head 13 can be equipped with a third tubular sheath 74 mounted concentrically with respect to the sheaths 37, 40.
  • the tubular sheath 74 is preferably mounted removably on a support piece 75 provided with two pairs of branches 76 in the shape of a "U" extending symmetrically on either side of the sheath.
  • the support piece 75 is removably mounted, by each of its branches 76, on a yoke 77 using an assembly pin 78 passing through the yoke 77 and the branches 76.
  • the yokes 77 are rigidly fixed on the uprights 5 a of the carriage 5, below the lower cross member 14, so that the sleeve 74 extends in a lower plane relative to the sleeves 37, 40.
  • the ring 56 and tip 58 are extended, respectively, by a nose 56, 58 is intended to partially engage the sleeve 74, to cooperate with the respective elements of the probe.
  • the third sleeve 74 therefore surrounds the elements associated with the sleeves 37, 40.
  • the tubular sheath 74 is intended to act on one of the constituent elements of the drill string, such as, for example, a sleeve 79 surrounding the protective barrel 20.
  • the use of a third tubular sheath 74 thus makes it possible to use it with unit lateral friction measurement probes constituted by four elements 16, 18, 20, 79.
  • This measuring head therefore offers the advantage of having an additional quantity measured by the sensors associated with the hydraulic cylinders 7.
  • the measuring head according to the invention is, advantageously but not exclusively, associated with a threshing device constituted by a hydraulic hammer.
  • a threshing device constituted by a hydraulic hammer.
  • a hammer 12 is provided with two cheeks 80 fixed to the lower cross member 14 of the mobile carriage 5.
  • This hammer which offers the advantage of having a variable striking frequency, is intended to urge, by percussion, the shaft of threshing 24 which is permanently mounted on the crosspiece 14 by penetrating inside the bore 25 and the passage 22 of the measuring head.
  • the movable carriage 5 thus has a reduced weight compared to known carriages of penetrometer.
  • the oscillating structure 3 which is articulated along the horizontal axis a situated substantially perpendicular to the axis of the drill string, can be easily tilted to release the axis of penetration of the drill string.
  • the pivoting of this structure 3 is ensured by two jacks 82 carried by the frame 1 and each actuating two connecting rods 83 and 84 forming a toggle joint ( fig. 3 ) .

Claims (14)

  1. Kopf für einen Penetrator, der längs einer Meßachse (23) die Kräfte mißt, die an eine Stangenanordnung (T) während ihres Eindringens oder Ausziehens übertragen werden, wobei der Meßkopf mindestens erste Mittel (38) aufweist, um die Kräfte zu erfassen, die von mindestens einem der Bestandteile der Stangenanordnung übertragen werden,
       dadurch gekennzeichnet, daß er mindestens eine innere Gleithülse (37) aufweist, die einen Kanal (22) begrenzt, der den Meßkopf längs der Meßachse (23) voll durchsetzt und dazu eingerichtet ist, mit Spiel die freie Gleitbewegung für eine Schlagachse (24) zu gestatten, die mittels einer Schlagvorrichtung zu alternierenden Bewegungen angetrieben ist und an ihrem Endabschnitt mit Mitteln (28) zum zeitweiligen Zusammenbau mit einem Bestandteil der Stangenanordnung ausgestattet ist, wobei die innere Gleithülse (37) die Übertragung der Kräfte zwischen mindestens einem Bestandteil der Stangenanordnung und den ersten Mitteln (38) sicherstellt, um die entsprechenden übertragenen Kräfte zu erfassen.
  2. Meßkopf nach Anspruch 1, dadurch gekennzeichnet, daß er eine äußere Gleithülse (40) aufweist, die mit Abstand die innere Gleithülse (37) umgibt und die Übertragung der Kräfte zwischen mindestens einem der Bestandteile der Stangenanordnung und zweiten Mitteln (42) sicherstellt, um die entsprechenden übertragenden Kräfte zu erfassen.
  3. Meßkopf nach Anspruch 1, dadurch gekennzeichnet, daß die innere (37) und äußere (40) Gleithülse konzentrisch zueinander angebracht sind und jeweils einen polygonförmigen Flansch (38', 43) aufweisen, der winklig zum anderen versetzt ist und jeweils auf mindestens einem und vorzugsweise auf einer Reihe von Kraftmeßfühlern (39, 40) befestigt ist, die zusammengefaßt sind, um die ersten Mittel (38) und die zweiten Mittel (42) zum Erfassen der übertragenen Kräfte zu bilden, wobei die Meßfühler (39, 45) auf einer gemeinsamen Montageplatte (51) befestigt sind.
  4. Meßkopf nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die innere (37) und äußere (40) Gleithülse jeweils einen mit Gewinde versehenen Endabschnitt (59, 57) aufweisen, der dazu bestimmt ist, die Anbringung von Einrichtungen (55, 60, 60') sicherzustellen, die zum Sicherstellen der Übertragung der Kräfte zwischen den Gleithüllen und den verschiedenen Bestandteilen der Stangenanordnung eingerichtet sind.
  5. Meßkopf nach Anspruch 4, dadurch gekennzeichnet, daß sie eine Einrichtung (55) zum statischen Eindrücken mit der vollständigen Stangenanordnung zugeordnet ist, wobei diese Einrichtung (55) einerseits von einem Gewindering (56) gebildet ist, der mit der äußeren Gleithülse (40) zusammengebaut ist und auf dem Führungsschaft (20) zur Auflage gelangt, um die Messung der Reibungskraft durch die Meßfühler (45) zu gestatten, die der äußeren Gleithülse zugeordnet sind, und andererseits von einem Gewindeansatz (58), der mit der inneren Gleithülse (37) verbunden ist und auf der mittleren Stange (17) und dem Zwischenrohr (19) aufsitzt, um die Messung des Widerstands gegenüber der Eindringung durch die Meßfühler (39) sicherzustellen, die der inneren Gleithülse zugeordnet sind.
  6. Meßkopf nach Anspruch 4, dadurch gekennzeichnet, daß ihm eine Einrichtung (60) für das statische Eindrücken mit alleine der mittleren Stange (17) zugeordnet ist, wobei diese Einrichtung (60) einerseits von einem Gewindeansatz (61) gebildet ist, der mit der inneren Gleithülse (37) verbunden ist und auf einem Gewindeansatz (62) aufsitzt, der mit der mittleren Stange (17) zusammenmontiert ist, um die Messung des Widerstands gegenüber der Eindringung durch die Maßfühler (39) zu gestatten, die der inneren Gleithülse zugeordnet sind, und andererseits von einem Gewindering (64), der mit der äußeren Gleithülse (40) zusammenmontiert ist und den Ansatz (62), der mit der mittleren Stange verbunden ist, derart trägt, daß der Ring (64) im Verlauf eines Ausziehvorganges den Ansatz (62), der mit der mittleren Stange verbunden ist, zu einer Verlagerung veranlaßt, um die Messung der Reibungskraft durch die Meßfühler zu gestatten, die der äußeren Gleithülse zugeordnet sind.
  7. Meßkopf nach Anspruch 4, dadurch gekennzeichnet, daß er einer Einrichtung zum statischen Eindrücken (60') mit alleine der mittleren Stange zugeordnet ist, wobei diese Einrichtung von einem Gewindering (70) gebildet ist, der mit einer der Gleithülsen verbunden ist und auf einem Zapfen (71) aufsitzt, der mit der mittleren Stange (17) verschraubt ist, wobei die Messung des Widerstandes gegenüber der Eindringung durch die dem Gleitring zugeordneten Meßfühler gestattet ist, und wobei der Zapfen (71) über einen Gewindering (73) fest am Ring derart angebracht ist, daß der Zapfen (71) und der Ring (70) im Verlauf eines Ausziehvorganges versetzt werden, um die Messung der Reibungskraft durch die Meßfühler (45) zu gestatten, die dem Gleitring zugeordnet sind und dann auf Zug arbeiten.
  8. Meßkopf nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß er eine dritte, rohrförmige Gleithülse (74) aufweist, die zur inneren (37) und äußeren (40) Geithülse konzentrisch ist und die Übertragung von Kräften zwischen mindestens einem der Bestandteile der Stangenanordnung und Kraftmeßfühlern sicherstellt.
  9. Penetrometergestell mit einem oszillierenden Führungsaufbau, der mit Gleitschienen (4) ausgestattet ist, die als Führungen für einen beweglichen Schlitten (5) dienen, der mit einem Meßkopf (13) und einer Schlagvorrichtung (12) ausgestattet ist,
       dadurch gekennzeichnet, daß der Meßkopf (13) entsprechend einem der Ansprüche 1 bis 8 auf dem beweglichen Schlitten (5) mittels der Montageplatte (51) befestigt ist, und daß die Schlagvorrichtung (12) fest auf dem beweglichen Schlitten (5) derart montiert ist, daß sie eine Schlagachse (24) belastet, die den Meßkopf durch seinen mittleren Kanal (22) durchsetzt, um zeitweise mit der mittleren Stange (17) der Stangenanordnung zusammenmontiert zu werden.
  10. Penetrometergestell nach Anspruch 9, dadurch gekennzeichnet, daß die Schlagvorrichtung (12) von einem Hammer mit variabler Schlagfrequenz gebildet ist, der dazu bestimmt ist, die Achse (24) zu belasten, die ständig im Inneren des Meßkopfes (13) angebracht ist.
  11. Penetrometergestell nach Anspruch 9, dadurch gekennzeichnet, daß die Schlagachse (24) mit der mittleren Stange (17) mittels einer Einrichtung (30) zum dynamischen Eindrücken zusammenmontiert ist, die von einem Stempel (31); der auf der Schlagachse aufgeschraubt ist, und von einem Schlagzapfen (32) gebildet ist, der mit der mittleren Stange (17) verbunden ist und mit dem Stempel über einem Gewindering (34) zusammengehalten wird.
  12. Penetrometergestell nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Schlagachse (24) in ihrer unteren Lage mittels zweier Stifte (26) gehalten ist, die von einer Traverse (14) des Schlittens getragen sind und tangential zur Achse angebracht sind, um sich im Inneren einer Auskehlung (27) zu erstrecken, die in die Achse eingebracht ist.
  13. Penetrometergestell nach Anspruch 9, dadurch gekennzeichnet, daß der bewegliche Schlitten (5) zur Auf- und Abwärtsbewegung mit Hilfe zweier Stellantriebe bzw. Zylinder (7) gesteuert ist, die mit Druckmeßfühlern ausgestattet sind, die es gestatten, den Widerstand der Stangenanordnung gegenüber dem Ausziehen zu messen.
  14. Penetrometergestell nach Anspruch 9 oder 13, dadurch gekennzeichnet, daß der Führungsaufbau (3) um eine horizontale Achse (a) schwenkbar angeordnet ist, die im wesentlichen senkrecht zur Achse der Rohranordnung angeordnet ist, und zur Schwenkbewegung um diese Achse mittels zweier Stellantriebe bzw. Zylinder (82) gesteuert ist, die jeweils auf ein Paar gelenkig gelagerter Zwischenglieder (83, 84) einwirken.
EP92420438A 1991-11-25 1992-11-25 Penetrometerkopf mit Gehäuse, und seine Anwendung Expired - Lifetime EP0544606B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9114763 1991-11-25
FR9114763A FR2684183B1 (fr) 1991-11-25 1991-11-25 Tete de mesure pour penetrometre et bati de penetrometre en faisant application.

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EP0544606A1 EP0544606A1 (de) 1993-06-02
EP0544606B1 true EP0544606B1 (de) 1997-02-19

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EP92420438A Expired - Lifetime EP0544606B1 (de) 1991-11-25 1992-11-25 Penetrometerkopf mit Gehäuse, und seine Anwendung

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EP (1) EP0544606B1 (de)
AT (1) ATE149051T1 (de)
DE (1) DE69217537T2 (de)
FR (1) FR2684183B1 (de)

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* Cited by examiner, † Cited by third party
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ES2184536B1 (es) * 1999-07-12 2004-03-01 Univ Almeria Maquina para medir la resistencia a la penetracion de suelos.
FR2822950B1 (fr) * 2001-03-30 2003-05-16 Sol Solution Dispositif de battage automatique pour un equipement de mesure de la compacite du sol
FR2976669B1 (fr) 2011-06-16 2014-08-29 Hydro Geotechnique Dispositif de mesure de la resistance a la penetration d'un sol
CN110295581B (zh) * 2019-07-29 2024-01-26 广东省地质装备中心 一种动力触探设备的支撑装置及动力触探设备
CN112411510A (zh) * 2020-10-19 2021-02-26 深圳亚纳海洋科技有限公司 一种基于可控放射源的静力触探装置及其测试方法

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FR2271343B1 (de) * 1974-01-29 1976-10-08 Fondasol Tech
NL7507567A (nl) * 1975-06-25 1976-12-28 Goudsche Machinefabriek Bv Sondeerinrichting voor bodemonderzoek.

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ATE149051T1 (de) 1997-03-15
DE69217537D1 (de) 1997-03-27
FR2684183A1 (fr) 1993-05-28
DE69217537T2 (de) 1997-09-25
FR2684183B1 (fr) 1994-02-25
EP0544606A1 (de) 1993-06-02

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