EP2949859B1 - Système de sécurité permettant de contrôler une zone dangereuse d'une machine d'excavation et machine d'excavation comprenant celui-ci - Google Patents

Système de sécurité permettant de contrôler une zone dangereuse d'une machine d'excavation et machine d'excavation comprenant celui-ci Download PDF

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Publication number
EP2949859B1
EP2949859B1 EP15169672.1A EP15169672A EP2949859B1 EP 2949859 B1 EP2949859 B1 EP 2949859B1 EP 15169672 A EP15169672 A EP 15169672A EP 2949859 B1 EP2949859 B1 EP 2949859B1
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EP
European Patent Office
Prior art keywords
excavation
safety system
shield
machine
antenna
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EP15169672.1A
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German (de)
English (en)
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EP2949859A1 (fr
Inventor
Alessandro Ditillo
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Soilmec SpA
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Soilmec SpA
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Publication of EP2949859A1 publication Critical patent/EP2949859A1/fr
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/022—Control of the drilling operation; Hydraulic or pneumatic means for activation or operation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions

Definitions

  • the present invention concerns a safety system for excavation equipment particularly but not exclusively used in an excavation machine for controlling the dangerous area surrounding the machine and for interrupting the dangerous manoeuvres of the machine itself.
  • the present invention also concerns an excavation machine comprising the aforementioned safety system.
  • the safety system is used to prevent an operator from coming into contact with rotary or moving members of the drilling machine that are directly involved in the excavation process.
  • the field of application of the present invention is that relating to excavation machines that, operating in several technological fields, can require the personnel in charge of the auxiliary services to carry out manual interventions in areas around the machine that are exposed to dangers, in particular close to the guide antenna or mast on which the rotary head or rotary slides and close to the drilling axis on which the shafts used for the excavation, mixing, jetting and driving-in processes are located.
  • Excavation machines require interventions of the personnel that can be generally divided into three types: first mounting interventions, maintenance interventions and interventions simultaneous to the work manoeuvres. In the first two types of interventions, usually carried out in the factory, the experience of the trained personnel, the specificity of the problems and common practice lead to consider this step not to be particularly risky.
  • dangerous area we mean the region of space around the guide antenna where the rotary head slides and the region of space close to the excavation area.
  • protections such as fixed barriers or guards, mobile barriers or guards with interblock, sensitive protection devices or a combination thereof around the dangerous area.
  • Such protections must prevent access to the dangerous area during any dangerous movement.
  • document WO 2011/051564 describes an excavation machine that comprises a protective structure or shield arranged at least partially around the antenna.
  • the standards require at least the rotation of the shaft to be instantaneously blocked and, alternatively, both the rotation and the translation movements of the driving head to be simultaneously and instantaneously blocked.
  • Such containment cages generally consist of one or more supporting frames, made through shaped tubes or plates that constitute the external shape thereof, and of metallic or plastic grids or meshes or other shields that occupy the area enclosed by such a shape.
  • the supporting frames can for example be hinged at points integral with the mast so that they can open by rotating on the horizontal plane, when the mast is arranged vertically, and leave free access to the dangerous area.
  • mechanical loading-aid means like for example automated loading arms, the so-called rack or revolver loaders, or the articulated cranes, which, in order to be able to operate correctly, should be contained inside the protected volume defined by the barriers.
  • a further limitation of this solution consists of the increased weight of the machine, with a consequent reduction of the stability due to the frontally cantilvered positioning of such barriers.
  • An alternative known solution consists in using sensitive devices, such as electrosensitive, photosensitive, laser, optical, radar, ultrasound or thermal devices. Such devices are arranged to generate a monitoring area that in turn at least partially comprises the dangerous area and to detect the presence and/or the passage of a body through such an area.
  • sensitive devices such as electrosensitive, photosensitive, laser, optical, radar, ultrasound or thermal devices.
  • Such devices are arranged to generate a monitoring area that in turn at least partially comprises the dangerous area and to detect the presence and/or the passage of a body through such an area.
  • Such crossing can occur both from the excavation axis towards the outside of the dangerous area but also from the outside of such an area inwards due for example to the bouncing of the debris against the parts of the machine, for example against the mast.
  • the crossing of the debris or of the sprays of water, mud or cement causes an undesired triggering of the sensitive devices and consequently the stop of the machine even in the absence of an actual condition of danger due to the passage of people. This can lead to continuous stops of the machine, seriously slowing down work, also considering the length and complexity of the operations imposed by the standards for reactivating normal operating mode.
  • Purpose of the present invention is to make a safety system for an excavation machine that overcomes the aforementioned drawbacks of the prior art, minimising the possibility of undesired stops of the machine in the absence of dangerous conditions whilst still maintaining the maximum reliability in detecting conditions of actual danger.
  • Another purpose of the present invention is to make a safety system for an excavation machine that is simple to be installed and that can be applied to different types of machines.
  • a further purpose of the present invention is to make a safety system for an excavation machine that is cost-effective and that does not limit, due to its size bulk, the capabilities in terms of excavation and of the approach to obstacles or walls.
  • Yet another purpose of the present invention is to make an excavation machine that ensures a high safety degree for the maintenance interventions to be carried out during the excavation process.
  • an excavation machine is shown, wholly indicated with 1.
  • Such an excavation machine is suitable for all digging technologies by rotation, rotopercussion, vibration, roto-driving and mixing and injection and it can be of the type for making piles, micro pile supports, tie rods or mechanical mixing.
  • the excavation machine 1 comprises a machine-base 2, equipped with tracks or wheels, which allow the movement on the building site, a guide antenna or mast 3 and a linkage 4 that allows the movement of the antenna 3 with respect to the machine-base 2 to take it reversibly from a closed configuration used for transportation to a work configuration, in which the antenna 3 can be arranged vertically, inclined or horizontal.
  • the guide antenna 3 is slidably coupled with at least one rotary head 5 or rotary, arranged to support and move an excavation battery 6 that comprises at least one drilling segment or shaft 6A; in detail, the rotary head 5 is coupled with the antenna 3 so that it can slide along the antenna itself to cause the excavation battery 6 to move forwards or backwards during drilling.
  • an excavation battery 6 can also be mounted, which uses percussion and/or vibration in addition to rotation.
  • the excavation battery 6 can comprise at least one supplementary segment or shaft 6A that must be added during drilling, in particular when the excavation or treatment depth that is wished to be reached is greater than the stroke of the rotary head 5.
  • the excavation battery 6 can comprise at least one supplementary segment or shaft 6A that must be added during drilling, in particular when the excavation or treatment depth that is wished to be reached is greater than the stroke of the rotary head 5.
  • it is necessary to disconnect the rotary head from the last drilling driven in shaft 6 and to lift it in order to add one or more supplementary shafts that are screwed on those that have already been driven in.
  • at the base of the guide antenna 3 there is at least one pair of clamps 7 that allows holding the last drilling driven in shaft 6 and disconnecting the rotary head or a shaft from it.
  • the at least one pair of clamps 7 can comprise a pair of gripping clamps 7 or alternatively a gripping clamp 7 of the unscrewing type.
  • the at least one supplementary shaft 6A is thus connected to the battery at a height above the clamps.
  • both the shafts and the coating tubes are used and these require the application of three clamps, at least one of which is of the unscrewing type.
  • the steps of loading and unloading the shafts can require, for the correct positioning, the intervention of an operator who must therefore get close to the drilling axis, in order to lift them or at least to direct them with respect to the shafts 6 held by the clamps 7.
  • the maintenance, inspection and replacement operations of the digging tool can also require the operator to get in said area.
  • the area close to the guide antenna 3 and to the excavation battery 6 is considered dangerous, since the operator could come into contact with the rotary members and consequently could get caught in them and be dragged. Another danger can be caused by the movement of the rotary head along the guide antenna, which could hit or drag the operator.
  • the excavation machine 1 is provided with a safety system for controlling the dangerous area.
  • Such a safety system comprises a plurality of sensitive devices 8 configured to generate a monitoring area and to detect the presence and/or the passage of a body in such a monitoring area.
  • the sensitive devices 8 can be of the electrosensitive, photosensitive, optical, radio, laser or thermal type.
  • such sensitive devices 8 comprise a signal emitter (not illustrated), for example an emitter of an electric signal, or of a light beam, of a thermal beam, of an ultrasound beam, of a radar beam, of an optical beam, and so on, and a corresponding receiver or reflector component (not illustrated) and are configured to detect when an object intercepts the signal emitted.
  • a signal emitter for example an emitter of an electric signal, or of a light beam, of a thermal beam, of an ultrasound beam, of a radar beam, of an optical beam, and so on
  • a corresponding receiver or reflector component not illustrated
  • the path of the signals between the emitter and the receiver or reflector component defines the monitoring area within which the devices are able to detect the presence of a body.
  • the sensitive devices 8 are arranged on the machine 1 so that the monitoring area monitored by the aforementioned devices comprises at least partially the area dangerous for operators. In general, the entry of an object or a body through the monitoring area causes a variation in the signal that is perceived by the emitter element and that thus produces the actions signalling said presence.
  • the sensitive devices 8 are positioned side by side so as to be able to intercept an object or a body having dimensions at least equal to or greater than 2 cm, more preferably equal to or greater than 4 cm.
  • Such a size allows intercepting the passage of a hand because it has larger dimensions than the minimum required for mounting two adjacent pointed detection sensitive devices 8 (on reading along one direction and not on beam or surface reading). In this way, if the hand is intercepted because it is of a certain size, it is possible to place the shield at a very short distance from the excavation battery 6.
  • the sensitive devices 8 are positioned around the excavation battery 6, at the minimum distance therefrom; such a distance is linked at least to the response and intervention time of the safety system, so that the monitoring area guarded by the aforementioned sensitive devices 8 is able to cover the area around the drilling shaft 6, or to close on the guide antenna 3 in an area rear and around the shaft 6 in a front area and being able to intercept an object or a body of dimensions at least equal to or greater than 2 cm.
  • the aforementioned interception size of an object or of a body is equal to about 2 cm, then it would also be possible to intercept the passage of a finger of a hand and thus the monitoring area can be arranged ever closer to the excavation battery 6 and thus occupy as little space as possible.
  • the cylindrical surface that surrounds the battery will be the minimum possible and therefore both the number of sensitive devices and the coverage and protection degree required will be optimised consequently, with the minimum possible bulk.
  • the sensitive devices 8 can be adjusted to read some parameters and to intervene just when some conditions have been reached. For example, when the dimensions of the object crossing the reading beam has a greater size than a predetermined size. In this case, it is preferable to install the sensitive devices 8 at a minimum distance from the excavation battery 6, correlated at least to the intervention time for stopping the dangerous manoeuvre. Such sensitive devices 8 can be arranged side by side at a distance such as not to exceed the preset minimum reading distance (e.g. 4 cm or 2 cm) or they can be adjacent or, for greater safety, have monitoring areas at least partially juxtaposed.
  • the preset minimum reading distance e.g. 4 cm or 2 cm
  • the sensitive devices 8 are, advantageously, capable of detecting the presence of the operator in the dangerous area and of generating, following such detection, a corresponding control signal, preferably of the electric type.
  • a control signal is adapted to at least stop the excavation battery 6, so as to preserve the safety of the operator.
  • the control signal drives the actuators of the rotary head 5 to immediately stop at least the excavation battery 6 or alternatively to at least simultaneously stop both the rotation of said excavation battery 6 and the axial sliding of the rotary head 5 along the antenna 3.
  • the safety system comprises an electronic processing unit 10, for example an electronic control station or PLC.
  • the control signal is sent to such an electronic processing unit 10 that is in turn configured to control at least the stop of the rotation of the excavation battery 6 following the reception of the aforementioned control signal.
  • the electronic processing unit 10 can also be configured to block the sliding of the rotary head 5 and/or to control the emission of a sound or light signal that warns that a violation of the dangerous area has occurred.
  • a limited operating mode is enabled, through a proper dedicated mode selector (not illustrated).
  • a proper dedicated mode selector not illustrated.
  • all of the manoeuvres are properly slowed down up to values such as to eliminate the danger and allow the inspection of the parts or the execution of manual interventions.
  • the normal operating mode i.e. the work mode
  • the sensitive devices 8 are arranged so as to monitor a monitoring area that is close to the guide antenna 3 between the clamps 7 and the rotary head 5.
  • the monitoring area extends above the upper clamp, starting from the clamp itself up to a height of at least 2.5 m from the ground.
  • the signal emitters of the sensitive devices 8 can be fixed to the guide antenna 3 at a height preferably greater than 2.5 m, whereas the corresponding receivers or reflector components can be fixed on to the clamps 7 or on to the antenna 3 at the clamps 7; alternatively, the signal emitters can be fixed to the guide antenna 3 at the clamps 7 and the corresponding receivers or reflector components can be fixed to the guide antenna 3 at a height preferably greater than 2.5 m. Emitters and receivers or reflector components will be positioned opposite one another close to the clamps 7 and above at the top of the mast 3.
  • the sensitive devices 8 are installed on the machine 1 so that the sensitive area varies with the position of the rotary head 5 on the antenna 3.
  • the signal emitters of the sensitive devices 8 are installed on the rotary head 5 and the corresponding receivers or reflector components are installed on the clamps 7 or on the antenna 3 at the clamps 7; alternatively, the signal emitters are fixed on to the clamps 7 or on the antenna 3 at the clamps 7 and the corresponding receivers or reflector components are fixed to the rotary head 5.
  • the rotary head 5 is characterised by hydraulic and electric supplies to control the rotation and control some functions (like for example rotation, temperature, proximity sensors by inversion of the rotation movement), therefore the electrical supply of the emitting part can be easily installed following the pre-existing pipes and the guiding cable-winding for the axial movements along the guide antenna 3.
  • the emitters and the corresponding receivers or reflector components of the sensitive devices 8 are mounted opposite one another on the drilling machine 1, and in particular will be installed at one end on the rotary 3 and at the other end close to the clamps 7.
  • the signal emitters and the corresponding receivers or reflector components of the sensitive devices 8 are fixed to the guide antenna 3 in opposite positions, for example the emitters in the upper part of the guide antenna 3 and the receivers in the lower part of the guide antenna 3, in order to cover longitudinally the greatest possible length of the guide antenna 3.
  • the safety system also comprises a shield 9 that is couplable with the machine 1 so as to extend in a substantially radial direction around the excavation battery 6 and indicatively in a direction perpendicular with respect to the front plane of the antenna 3 so as to define an upper area of the antenna 3, where the sensitive devices 8 are intended to be applied, and a lower area of the antenna 3 that is close to the mouth of the excavation.
  • the debris during the work steps tend to be projected towards the shield 9 due to the rotation and advancing energy of the excavation battery 6 or due to the injection pressure of the excavation fluids that rise from the hole transporting the debris, especially in tubed drilling technology, down the hole hammer with use of compressed air and jet grouting.
  • the shield 9 is shaped in such a way as to stop the rise of the material projected from the lower area to the upper area.
  • the shield 9 is arranged to convey the excavation flow that comes out of the hole, the possible debris or piles, the water, the polymers or the drilling muds, directing them laterally or making them fall close to the clamps 7 preventing them from proceeding along their run upwards, hitting the area where the sensitive devices 8 are installed.
  • the shield 9 is concave with the concavity facing the lower area.
  • the shield 9 is fixed to the mast 3 or to the clamps 7 above them at a height preferably not greater than 200 millimetres with respect to the upper surface of the clamps 7.
  • the interspace generated between the shield 9 and the clamps 7 acts as a channel in which the debris will be conveyed, in this way avoiding hitting the area above.
  • the signal emitters and the receivers of the sensitive devices 8 can be arranged so that the monitoring area is delimited by the shield 9 instead of the clamps 7.
  • the shield 9 extends starting from the front and/or lateral surfaces of the guide antenna 3 in a direction perpendicular to the axis of the antenna 3 itself in order to cover at least the area close to the clamps or the dangerous area.
  • the shield 9 extends so as to protect the monitoring area of the sensitive devices 8 like for example that indicated with a broken line in figure 1 .
  • the extension of the shield 9 and its shape define the dangerous area into which access is forbidden to any person during the steps of excavation and in particular of rotation of the tool, especially at maximum speed.
  • the shield could extend radially to define a second boundary in which second sensitive devices could monitor a surface outer than the previous one, thus warning of the entry into a dangerous, but not yet forbidden area, of objects or bodies.
  • the upper part of the shield 9, not exposed to dirt can be used to fix the sensitive devices 8, or, alternatively, for some types of signal, can be an integral part of the sensitive devices 8, acting itself as reflector component in order to generate the return of the signal to the emitter and thus determine the monitoring area.
  • the shield 9 can be flat and comprises a sheet of steel or of plastic or of rubber with a low thickness, which can vary from a few millimeters to a few centimetres as a function of the material of which it is made, so as to result particularly light.
  • the shield 9 is fixed to the antenna or alternatively can be fixed to the body of the clamps 7.
  • Such attachments are preferably of the removable type, such as bolts, in order to allow quick and easy replacement of the shield 9 in case of damage.
  • the shield 9, at the excavation axis has an opening 15 sufficient to allow the passage of the drilling shafts and at the same time sufficiently adherent to such shafts in order to prevent the passage of debris towards the area above the shield 9.
  • Such an opening 15 can be adjustable or modified through interchangeable adapters in order to adapt to the different diameters of the shafts or to the different types of tool.
  • guide and/or holding means 13 can be provided, which are applied to the internal surface of the opening 15 of the shield 9.
  • the shield 9 can be made in a plurality of parts.
  • the shield 9 can comprise two half-shields arranged symmetrically with respect to the excavation battery 6 and coupled together in a selectively releasable manner; in this way, it is possible to decouple the half-shields from one another when the machine is inactive in order to allow easy cleaning of the shield itself and of the area below that is subject to the fall of debris coming from the shield.
  • the shield 9 can be connected to the antenna 3, for example by means of jacks 11, so as to slide axially with respect to it and to further be locked at different heights and in such a way allow effective positioning or leave space for cleaning and maintenance to the clamps (also modulating the opening left for the passage of excavation debris).
  • the shield 9 can have a concave shape towards the base of the antenna, for example like a cap or funnel.
  • the concave shape allows conveying the debris towards the base of the antenna and limiting the area into which it will fall.
  • the shield 9 can advantageously be equipped with borders or lateral bulkheads in order to contain the drainage of the drilling fluids in an area surrounding the clamps 7.
  • the shield 9 has, on the lower surface, a plurality of spraying nozzles 12 with ducts that are fed with water.
  • Such spraying nozzles 12 can reduce the drilling dusts and make the work environment cleaner especially for the use of sensitive devices 8 of the optical type.
  • the shield 9 advantageously comprises cleaning means 14 of the helix such as to make the material contained among the turns fall and prevent it from falling and crossing the monitoring area defined by the sensitive devices 8 once it has risen up.
  • the cleaning means 14 can be stationary, like for example blades or shares and in this case the helix must rotate during the extraction from the hole, or it can be stationary and flexible, like for example brushes or motorised elements rotating about the helix 6B and in this case the helix may not rotate during the extraction from the hole.
  • the cleaning means 14 could also be arranged in an independent structure, preferably fixed, which lies between the clamps at the bottom and the shield at the top.
  • the safety system described minimises the possibility of undesired stops of the excavation machine in the absence of dangerous conditions, whilst at the same time still maintaining the maximum reliability in detecting conditions of actual danger, i.e. the presence of an operator or other personnel in the dangerous area.
  • such an advantage is achieved through the presence of the shield that separates the lower part of the guide antenna, close to the excavation area, from the upper part intended for the operation of the sensitive devices.
  • such a shield is able to stop the material projected from the excavation area towards the area of the sensitive devices during the work steps of the machine.
  • the triggering of the sensitive devices can only be caused by the interception of an operator or of an obstacle intercepting the signal or the barrier emitted by the sensitive devices.
  • the protection provided by the shield also allows keeping the sensitive devices located above the shield 9 clean and efficient.
  • the shield 9 also has a limited weight. This translates into greater stability, into better performance and into greater manoeuvrability of the machine.
  • both the sensitive devices and the shield do not increase the bulk of the machine, ensuring excellent accessibility of the machine to areas close to walls or edges.
  • the shield being in a lowered position, preferably no more than 200 millimetres above the clamps, does not hinder the loading of the shafts because it does not increase the loading height with respect to the ground. Moreover, such positioning does not reduce the actual stroke of the rotary head since the shield is in an area not reachable by the rotary head itself.
  • the safety system thanks to the use of the sensitive devices, maintains its efficiency also during the work steps carried out with antenna inclined frontally or laterally and also when it is arranged horizontally.
  • the devices have a monitoring area that delimits the dangerous area around the guide antenna and in particular such a monitoring area can extend longitudinally to the mast for its entire length.
  • the area that surrounds the shafts remains free, i.e. without solid shields or protective cages. Consequently, when the machine is inactive, and the sensitive devices are turned off, the area of the shafts remains easily accessible for inspection and maintenance. Differently, in known systems that adopt fixed or movable barriers, they represent an obstacle to inspection and maintenance even when the machine is inactive.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (18)

  1. Système de sécurité pour contrôler une zone dangereuse d'une machine d'excavation (1) pourvue d'une antenne de guidage (3), d'une tête rotative (5) accouplée de manière coulissante sur ladite antenne de guidage (3) et agencée pour supporter et déplacer une batterie d'excavation (6), ledit système de sécurité comprenant :
    - un bouclier (9) pouvant être accouplé à ladite machine (1) de manière à s'étendre dans une direction substantiellement radiale autour de ladite batterie d'excavation (6) définissant une zone supérieure de ladite antenne de guidage (3) et une zone inférieure de ladite antenne de guidage (3) où se produit l'excavation,
    ledit système de sécurité étant caractérisé en ce que ledit bouclier (9) a une forme conçue pour arrêter la remontée des matériaux projetés de ladite zone inférieure vers ladite zone supérieure, ledit système de sécurité comprenant une pluralité de dispositifs sensibles (8) destinés à être positionnés dans ladite zone supérieure et configurés pour produire une zone de surveillance, pour détecter la présence et le passage d'un corps dans ladite zone de surveillance et pour générer, suite à une telle détection, un signal de commande correspondant adapté pour au moins arrêter la rotation de ladite batterie d'excavation (6), lesdits dispositifs sensibles (8) étant placés sur ladite machine (1) de telle manière que ladite zone de surveillance comprend au moins en partie ladite zone dangereuse.
  2. Système de sécurité selon la revendication 1, dans lequel ledit bouclier (9) est concave avec la concavité tournée vers ladite zone inférieure.
  3. Système de sécurité selon la revendication 1 ou 2, dans lequel ledit bouclier (9) est pourvu d'une pluralité de buses de pulvérisation d'eau (12) pour réduire les poussières de forage.
  4. Système de sécurité selon l'une des revendications précédentes, dans lequel ledit bouclier (9) est pourvu de rebords ou de cloisons latérales pour maintenir le drainage des fluides de forage dans ladite zone inférieure.
  5. Système de sécurité selon l'une des revendications précédentes, dans lequel ledit bouclier (9) est constitué d'une pluralité de pièces.
  6. Système de sécurité selon la revendication 5, dans lequel ledit bouclier (9) comprend deux demi boucliers disposés de façon symétrique par rapport à ladite batterie d'excavation (6) et accouplés l'un à l'autre d'une manière sélectivement libérable.
  7. Système de sécurité selon l'une des revendications précédentes, dans lequel ledit bouclier (9) peut être connecté audit guide d'antenne (3) de manière à pouvoir coulisser axialement par rapport à ladite antenne (3) et à pouvoir être bloqué ensuite à différentes hauteurs.
  8. Système de sécurité selon l'une des revendications précédentes, dans lequel ledit signal de commande est capable de guider ladite tête rotative (5) pour au moins arrêter simultanément la rotation de ladite batterie d'excavation (6) et le glissement axial de ladite tête rotative (5) le long de ladite antenne de guidage (3).
  9. Système de sécurité selon l'une des revendications précédentes, comprenant une unité de traitement électronique configurée pour commander au moins l'arrêt rotatif de ladite batterie d'excavation (6).
  10. Système de sécurité selon la revendication 9, dans lequel ladite unité de traitement électronique est aussi configurée pour bloquer le glissement de ladite tête rotative (5) le long de ladite antenne de guidage (3), ou pour commander l'émission d'un signal sonore ou lumineux.
  11. Machine d'excavation (1) comprenant :
    - une antenne de guidage (3) ;
    - une tête rotative (5) accouplée de manière coulissante sur ladite antenne de guidage (3) ;
    - une batterie d'excavation (6) accouplée à ladite tête rotative (5), ladite tête rotative (5) étant agencée pour supporter et déplacer ladite batterie d'excavation (6) ;
    - un système de sécurité selon l'une des revendications précédentes.
  12. Machine d'excavation (1) selon la revendication 11, dans laquelle lesdits dispositifs sensibles (8) sont placés côte à côte afin d'être aptes à intercepter un objet ou un corps ayant des dimensions supérieures ou égales à 2 cm.
  13. Machine d'excavation (1) selon la revendication 11 ou 12, dans laquelle ledit bouclier (9) est fixé à ladite antenne (3).
  14. Machine d'excavation (1) selon l'une des revendications 11 à 13, dans laquelle ladite antenne de guidage (3) est pourvue d'au moins une paire de pinces (7) et ledit bouclier (9) est fixé à ladite au moins une paire de pinces (7), au-dessus d'elle.
  15. Machine d'excavation (1) selon l'une des revendications 11 à 13, dans laquelle lesdits dispositifs sensibles (8) sont fixés à ladite antenne de guidage (3).
  16. Machine d'excavation (1) selon l'une des revendications 11 à 15, dans laquelle lesdits dispositifs sensibles (8) sont installés sur ladite machine (1) de telle manière que l'étendue de ladite zone de surveillance varie en fonction de la position de ladite tête rotative (5) par rapport à ladite antenne (3).
  17. Machine d'excavation (1) selon la revendication 16, dans laquelle chacun desdits dispositifs sensibles (8) comprend un émetteur de signal et un récepteur correspondant ou un composant réfléchissant, qui sont montés l'un en face de l'autre à une extrémité sur la tête rotative (5) et à l'autre extrémité près des pinces (7).
  18. Machine d'excavation (1) selon l'une quelconque des revendications précédentes, dans laquelle ledit bouclier (9) fait partie intégrante des dispositifs sensibles (8), et fait office de composant réfléchissant.
EP15169672.1A 2014-05-30 2015-05-28 Système de sécurité permettant de contrôler une zone dangereuse d'une machine d'excavation et machine d'excavation comprenant celui-ci Active EP2949859B1 (fr)

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CN106351596A (zh) * 2016-08-31 2017-01-25 广西徐沃工程机械设备有限公司 一种钻机用捕尘装置
CN109057734A (zh) * 2018-09-20 2018-12-21 江苏鼎达建筑新技术有限公司 用于非开挖路基锚固一体机
CN109469454B (zh) * 2018-11-08 2021-05-07 重庆宝爵机械设备有限公司 一种钻机用除渣双除尘装置
CN113931659B (zh) * 2021-09-30 2024-05-07 华北水利水电大学 一种采空区深成桩成桩方法
CN115434634A (zh) * 2022-08-23 2022-12-06 四川昌泰建筑工程有限公司 一种体育馆施工用旋挖机及其施工方法
CN117365284B (zh) * 2023-12-05 2024-03-08 菏泽市自然资源和规划局 一种自然资源勘探钻井装置

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SE379823B (fr) * 1972-06-14 1975-10-20 Ilmeg Ab
US4282940A (en) * 1978-04-10 1981-08-11 Magnafrac Apparatus for perforating oil and gas wells
FI20096109A (fi) 2009-10-28 2011-04-29 Sandvik Mining & Constr Oy Menetelmä suojarakenteen liittämiseksi syöttöpalkkiin ja kaivostoimilaitteen suojarakenne
ITTO20120502A1 (it) * 2012-06-08 2013-12-09 Soilmec Spa Metodo e sistema per comandare lo spostamento di una torre di una macchina perforatrice, in particolare per la realizzazione di pali

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