EP3129593B1 - Hochpräzise sensorik zum ermitteln einer mechanischen belastung eines abbauwerkzeugs einer tunnelbohrmaschine - Google Patents

Hochpräzise sensorik zum ermitteln einer mechanischen belastung eines abbauwerkzeugs einer tunnelbohrmaschine Download PDF

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Publication number
EP3129593B1
EP3129593B1 EP15713516.1A EP15713516A EP3129593B1 EP 3129593 B1 EP3129593 B1 EP 3129593B1 EP 15713516 A EP15713516 A EP 15713516A EP 3129593 B1 EP3129593 B1 EP 3129593B1
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EP
European Patent Office
Prior art keywords
load
sleeve
excavation tool
disc cutter
sensor
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.)
Active
Application number
EP15713516.1A
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German (de)
English (en)
French (fr)
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EP3129593A1 (de
Inventor
Stefan Barwart
Robert Galler
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Montanuniversitaet Leoben
B+ G Betontechnologie and Materialbewirtschaftung AG
Herrenknecht AG
Original Assignee
Montanuniversitaet Leoben
B+ G Betontechnologie and Materialbewirtschaftung AG
Herrenknecht AG
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Publication of EP3129593A1 publication Critical patent/EP3129593A1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/104—Cutting tool fixtures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E21D9/112—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads

Definitions

  • the invention relates to a mining tool, a system for determining a mechanical load of a mining tool, a drill head and a tunnel boring machine.
  • a tunnel boring machine is a machine used to build tunnels.
  • Components of a tunnel boring machine are a demounting plate with feeding and bracing devices, equipment for the installation of support and expansion measures, equipment for material removal, a supply unit (electricity, compressed air, ventilation, water), and transport equipment for excavation material, proppant and finishing materials.
  • a front boring head of a tunnel boring machine is provided with mining tools for loosening a mountain.
  • a mining tool for a boring head of a tunnel boring machine comprising a cutter-roll mounting device (in particular, a receiving bearing) for receiving and supporting a cutting roller for excavating mountains in the cutter-roll mounting device (In particular in the receiving warehouse) - in particular interchangeable - is received or recorded (wherein the cutting roller is preferably not actively driven, but is simply rolled over the rock), and a sensor arrangement (the at least one load-sensitive element, connecting means for transmitting sensor signals to a Evaluation unit, etc.) for detecting a mechanical load on the mining tool, in particular the cutting roller, wherein the sensor arrangement as an at least partially in the Schneidrollenbefest Trent and / or at the Cutting roller mounted sleeve is formed with at least one attached thereto load-sensitive element.
  • a cutter-roll mounting device in particular, a receiving bearing
  • a cutting roller for excavating mountains in the cutter-roll mounting device (In particular in the receiving warehouse) - in particular interchangeable - is received or recorded (wherein the cutting roller
  • a system for determining a mechanical load on a mining tool (especially a cutting roll) of a boring head of a tunnel boring machine for mining mountains comprising the excavation tool having the above-described features, and wherein the system is an evaluation unit (eg, a processor) configured to determine, based on sensor signals of the at least one load sensitive element, information (eg, magnitude and / or direction of one or more applied force components) indicative of the mechanical stress that is on the cutting roller of the removal tool acts.
  • an evaluation unit eg, a processor
  • a boring head for a tunnel boring machine for mining mountains having a rotary (e.g., cylindrical) boring body rotatably and translationally movable with a plurality of (particularly front or mountain side) excavation tool holders for supporting mining tools, and a plurality of mining tools having the above-described features, which are in particular replaceably halterbar or supported in the plurality of mining tool holders.
  • a rotary (e.g., cylindrical) boring body rotatably and translationally movable with a plurality of (particularly front or mountain side) excavation tool holders for supporting mining tools, and a plurality of mining tools having the above-described features, which are in particular replaceably halterbar or supported in the plurality of mining tool holders.
  • a tunnel boring machine for mining mountains having a drill bit having the features described above.
  • the force measurement in tunneling more specifically, during a drilling operation of a boring head of a tunnel boring machine by means of cutting tools with cutting rollers, thereby in an extremely precise manner be made, that one or more load-sensitive elements (such as strain gauges) are integrated into a hollow sleeve which can be mounted at any point of the mining tool in a corresponding sleeve hole in the cutting roller mounting device and / or in the cutting roller.
  • load-sensitive elements such as strain gauges
  • a preferably open on both sides and thus accessible hollow body is used as a receptacle base for receiving load-sensitive elements, not only the position of the load measurement in the mining tool is freely selectable (it only needs to be formed at the desired location a sleeve hole into which the sensor sleeve is received ), but the elasticity of a thin-walled hollow sleeve body can also be advantageously used to just revolutionize the sensitivity of the measurement over conventional approaches.
  • a modular measuring unit in the form of a sleeve which is designed to determine external cutting forces of tools for loosening rocks.
  • the sleeve can be force, material and / or positively positioned directly in the environment of the tool.
  • Such a configuration has the advantage that a direct assignment of the measurement signal to the external loads is possible.
  • a measurement of different forces and their directions in almost any position is possible.
  • Experiments using the sleeve-style (instead of stud-style) design and optimized alignment and placement of sensors for multiple strategic positions show great performance in terms of linearity (about 3-5% and better), hysteresis (very small), and offset behavior.
  • the cutting-roll fastening device may have a cutting roll receptacle and at least one fastening element for fastening the cutting roll to the cutting roll receptacle and / or for fastening the cutting roll receptacle to the drill head, wherein the at least one load-sensitive element of the sensor arrangement (in particular functionally and spatially) is separate from the at least one Fastener is provided.
  • At least a part of the sleeve can be designed as a (in particular thread-free) hollow cylinder (for example as a pipe piece), more particularly as a hollow circular cylinder.
  • a hollow cylinder may have an axial through-hole, in which case a mounting is more load-sensitive Elements on the large-scale inner wall is possible.
  • Such a sensor mounting is not only simple in terms of assembly technology, but also protects the sensors from destruction during operation, without having to compromise on the accuracy of detection.
  • the through-hole architecture it is also possible to form axial blind holes on one or both sides of the essentially hollow-cylindrical sleeve body, which or which lead to planned mounting surfaces in the interior of the sensor sleeve, to which the load-sensitive element (s) can then be attached with low assembly costs are.
  • a circular cylindrical outer surface of the sensor sleeve it is possible to introduce the sensor sleeve into a circular (drilling) hole at the desired measuring position of the removal tool.
  • At least one of the at least one load-sensitive element may be attached to an inner surface of a sleeve wall.
  • the inner wall of the sensor sleeve is a suitable location for mounting the sensors, for example by means of gluing or pressing into a wall groove.
  • the load-sensitive elements are protected from damage, in particular during driving or screwing into a sleeve receiving hole in the mining tool, without sacrificing measurement accuracy during the drilling process.
  • the targeted attachment of load-sensitive elements at certain axial and / or radial positions of the inner wall thus also allows the recording direction-dependent load information.
  • a plurality of load-sensitive elements can be attached to one another radially offset in angle from the inner surface of the sleeve wall.
  • the angularly offset attachment of a plurality of load-sensitive elements along a circumference of the inner wall of the sensor sleeve allows the detection of direction-dependent force information.
  • Such a geometry is in particular for a full bridge circuit, which can ensure a temperature independence of the measurement results (for example, if four full-bridge connected load sensitive elements are at the same temperature) is advantageous.
  • typical sensor sleeves for example, length between 10 mm and 100 mm, in particular between 20 mm and 60 mm, diameter between 3 mm and 30 mm, in particular between 6 mm and 20 mm
  • the size of typical sensor sleeves is sufficient to form several load-sensitive elements in the form of precise and fault-tolerant strain gauges arranged angularly offset from each other.
  • an axial arrangement of a plurality of load-sensitive elements on the inner wall of the sensor sleeve is possible.
  • the sleeve wall may be formed so thin-walled (for example, at most 2 mm, in particular at most 1 mm, thick) that the sleeve wall under the influence of mechanical stress during drilling operation under the action on the load-sensitive element is elastically deformable.
  • the sensor sleeve may, for example, comprise a metal such as stainless steel with a thickness of between 0.05 mm and 2 mm, in particular 0.1 mm to 0.2 mm.
  • the thin-walled sensor sleeve itself interact as a sensory component with the one or more load-sensitive elements, as well as the sensor sleeve is elastically deformed under the load during drilling operation of the tunnel boring machine and moved to some extent, which in turn is transmitted to the load-sensitive elements.
  • the sensor sleeve is then not just a carrier for the load-sensitive elements, but even sensor component. This is precisely the reason for the particularly high sensitivity of the mining tool according to the invention.
  • At least one of the at least one load-sensitive element may be attached to a particular flat plate of the sleeve, which in a hollow cylindrical Section of the sleeve is arranged and attached to the hollow cylindrical portion.
  • a separate plate formed in one piece with the wall of the sensor sleeve or pressed into it can be provided, which serves to receive one or more load-sensitive elements.
  • the wafer may be disposed at a location of a hollow cylindrical wall such that it is centrally located between opposed axial ends of the sensor sleeve.
  • the load-sensitive elements can be mounted so that they are protective while mounted inside the sensor sleeve, but still highly sensitive to stress during drilling operation of a tunnel boring machine.
  • the plate may be circumferentially connected directly to the hollow cylindrical wall of the sensor sleeve or adjacent thereto, in order to allow an unimpeded introduction of force towards one or more load-sensitive elements on the plate.
  • a plurality of load-sensitive elements can be attached to one another at an angle to one another radially offset from the wafer.
  • load-sensitive elements at a distance of 90 ° to each other may be mounted on the wafer, so that their alignment lines form a cross.
  • load-sensitive elements may also be attached to axially different positions in order to further refine the spatial resolution of the recorded load data.
  • the plate may be formed as a membrane.
  • the sensitivity of the sensor arrangement is particularly high.
  • two load-sensitive elements can be mounted radially offset relative to one another on an inner surface of a sleeve wall and two further load-sensitive elements can be provided separately from the inner surface.
  • the two load sensitive elements mounted on the inner wall may primarily measure force, whereas the other two load sensitive elements (which may be loosely mounted inside the sleeve, for example) may be provided for temperature compensation by means of a bridge circuit.
  • four load-sensitive elements may be mounted radially on a particular flat plate of the sleeve about a sleeve axis, wherein the plate is disposed in a hollow cylindrical portion of the sleeve and attached to the hollow cylindrical portion.
  • all four load sensitive elements of a full bridge circuit are mounted on the wafer (preferably on a common major surface of the wafer, more preferably in substantially x or cross pattern), with two of the load sensitive elements along a first direction and the other two load sensitive elements are aligned along a preferably orthogonal second direction.
  • Such a configuration shows particularly good properties with regard to detection accuracy, linearity, hysteresis behavior and mechanical robustness.
  • four load-sensitive elements can be radially offset in relation to each other on an inner surface of a Sleeve wall be attached.
  • Such an embodiment is in FIG. 4 and also enables a fault-proof measurement of forces acting by a symmetrical attachment of the load-sensitive elements on the inner wall of the sensor sleeve.
  • the resulting shielding of the load-sensitive elements from the environment is particularly advantageous under the harsh and harsh conditions of the drilling operation.
  • the removal tool can have at least one further sleeve mounted at least partially in the cutting roll attachment device and / or on the cutting roll and having at least one load-sensitive element attached thereto, the sleeve and the further sleeve being angularly, in particular orthogonal, at different positions of the removal tool , can be arranged.
  • the mutually angular, preferably orthogonal attachment of two sensor sleeves to each other (that is, the arrangement of the sleeve axes with a 90 ° angle to each other) not only provides complementary information, but also allows the detection of different force components, such as rolling force, normal force and axial force of the cutting roller assembly ,
  • the sleeve may be disposed in a cutter roll support block of the cutter roll attachment device.
  • a cutter roll support block serves to support the cutting roll in the mining tool and in turn may itself be configured for mounting in the drill head.
  • Such a cutter roll support block provides the ability to form one or more sleeve receiving holes for receiving one or more sensor sleeves.
  • a can Cutting roller holder block when replacing the rapidly-wearing cutting role continuously remain mounted on the drill head, so that no costly disassembly and reassembly of sensor cables when just replacing the cutting roller is necessary.
  • the sleeve can be arranged on a cutting roller bearing, in particular a C-piece, of the cutting roller fastening device.
  • the C-piece of the cutter roll holder is a bearing piece having a substantially C-shape in cross section.
  • Such a C-piece is located particularly close to the cutting roll itself and therefore, as finite element simulations have shown, is particularly sensitive to acting loads or provides very precise sensor data for highly sensitive determination of forces on the mining tool during drilling operation.
  • the sleeve may be arranged as part of a cutting roll axis.
  • the sleeve-like geometry of the sensor sleeve is predestined to be inserted into an axial bore of the cutting roller itself, in order to be able to detect highly accurate force data at this position.
  • the sleeve can be easily removed or pushed out of the sleeve axis and inserted into a new cutting roller.
  • the reassembly of the sensor sleeve when replacing a cutting roller is possible with simple means.
  • the sensor sleeve at a different location of the cutting roller, for example in a borehole in a solid section of a cutting ring of the cutting roller.
  • the removal tool can have at least one sensor line for guiding sensor signals, wherein the at least one sensor line is located starting from the sensor extends at least one load-sensitive element at least partially through a lumen of the sleeve therethrough.
  • the sleeve-like configuration of the sensor arrangement with an access opening or two access openings makes it possible, with little effort, to lead cable inlets and outlets to the load-sensitive elements in the sensor sleeve and at the same time protect them mechanically from the environment. This represents a significant advantage of the solution according to the invention, since it guarantees a reliable provision of electrical signals from the load-sensitive elements in the harsh conditions, as they prevail during operation of a tunnel boring machine, even in long-term operation.
  • wireless communication of the load-sensitive element or elements with an evaluation or control device is possible, for example by inserting transponders such as RFID tags.
  • a cutting roller is understood in particular to mean a rotatable body which is designed to cut off rock in a cutting manner.
  • the cutting roller is a disk, which may also be referred to as a roller chisel.
  • the outer ring of a disk can be called a cutting ring.
  • a disk is not actively driven, but rolls off at the face.
  • Another exemplary embodiment of a cutting roller is a wart bit, which is a rotatable body with wart-like projections and which is used, for example, to remove very hard rock (for example for platinum mining).
  • the at least one load-sensitive element may be formed as strain gauges.
  • a strain gauge is a measuring device for the detection of elongating deformations that changes their electrical resistance even at low deformations and thus are used as a strain sensor can.
  • a strain gauge may be glued or otherwise fixed to the sleeve so that it may deform under load during operation of the disassembly tool. This deformation or elongation then leads to a change in the resistance of the strain gauge. A corresponding electrical signal can be detected and evaluated as a sensor signal.
  • a strain gauge is a low cost, load sensitive element that is particularly well suited to the requirements of a wellhead, as it is compatible with the harsh conditions prevailing there.
  • An alternative to the implementation of strain gauges as load-sensitive elements can be used as a load-sensitive element and a piezoelectric sensor.
  • the removal tool can be designed as a wedge-lock removal tool or as a thru-axle removal tool. It is well known to those skilled in the art that these two types of mining tools are commonly used in tunnel boring machines.
  • An example of a thru-axle removal tool is also called a "conical saddle system”.
  • Thru-axle removal tools are used, for example, by Aker Wirth.
  • Wedge-lock removal tools are used, for example, by Schuknecht or Robbins.
  • a cavity may remain in the sleeve interior between the sleeve and the at least one load-sensitive element attached thereto.
  • the hollow volume of the cavity may be at least 10%, more preferably at least 30%, more preferably at least 50% of the total volume of the sensor sleeve (ie, void volume plus solid volume).
  • the sleeve may be welded or soldered into a bore in the cutter roll fastener or cutting roll or otherwise formed inseparable or even integral with the cutter roll fastener or cutter.
  • the sensor arrangement may have four, in particular exactly four, load-sensitive elements, wherein the evaluation unit may be set up to determine information based on sensor signals of the four load-sensitive elements which is indicative of a contact force, a lateral force and a rolling force act on the cutting roller.
  • the four load-sensitive elements detect partially redundant sensor information, which is not only indicative of the three measured values contact force, lateral force and rolling force, but also enables their determination to be excessively determined.
  • a high degree of precision of the measured data can be achieved, which is of particular advantage under the harsh conditions of a tunnel boring machine.
  • FIG. 1 shows a tunnel boring machine 180 for mining a mountain 102, into which a borehole 182 has already been introduced. The drilling is performed in such a way that the borehole 182 according to FIG FIG. 1 is gradually extended to the right. It is known to those skilled in the art that a tunnel boring machine 180 has a plurality of components. For the sake of clarity, is in FIG. 1 but only a drill bit 150 having a plurality of (for example, 50 to 100) mining tools 100 is shown.
  • the drill head 150 has a drilling body 152, which is rotatable and translatable with respect to the mountain 102 by means of a drive device 184, on whose front-side or mountain-side end face a plurality of removal tool holders or receptacles 154 are mounted. These are distributed over the circular end face of the drill body 152, which is in the cross-sectional view of FIG. 1 only partially visible.
  • Each of the mining tool holders 154 is configured to support a respective mining tool 100.
  • a mining tool 100 may be mounted in each of the mining tool holders 154.
  • Each of the mining tools 100 includes a disc fixture 104 mountable to the wellhead 150 with a receptacle bearing for receiving and supporting a rotatable disk 106, which is also part of the excavation tool 100.
  • Each disc fixture 104 has a disc receptacle 194 that may be configured as a type of pot that is specifically configured to receive a disc 106 as a replaceable module. Fixing screws 110 form a further component of the disc fastening device 104. Consequently, each of the removal tools 100 has a plurality of fastening screws 110 with which the disc 106 together with the bearing 126 and the disc receptacle 194 are fastened to the drill head 150.
  • the disk 106 has an axis 120, a disk body 122, a cutting ring 124 with a circumferential cutting edge, and a bearing 126.
  • a circumferential cutting edge 124 of the respective disk 106 in the rotating state may engage the latter to break down the rock 102.
  • the disk 106 is replaceably received in the receiving storage of the disc attachment device 104, or more precisely in the disc holder 194.
  • Each mining tool 100 includes a sensor assembly 112 for detecting a mechanical load on the associated mining tool 100, more specifically, the disk 106.
  • the disk 106 is exposed to this mechanical stress during disassembly of the rock 102 through the disk 106.
  • the sensor arrangement 112 is shown as being in the disc attachment device 104 (and in an alternative embodiment as an alternative or in addition to the disc 106).
  • mounted sleeve 177 is formed with a load-sensitive element 108 attached thereto in the form of a DehnmessstMails. In the sleeve 177 so a strain gauge is integrated as a load-sensitive element 108.
  • a connecting cable or a sensor line 171 an electrical sensor signal can be transmitted from the load-sensitive element 108 to an evaluation unit 128.
  • Exemplary embodiments of the sensor arrangement 112 according to FIG. 1 are in FIG. 2 to FIG. 4 shown.
  • the evaluation unit 128, which may be part of a processor or a controller of the tunnel boring machine 180, receives the sensor data which measures the load-sensitive element 108 and determines therefrom the mechanical load which acts on the associated disk 106.
  • FIG. 2 shows a sleeve 177, also referred to as a sensor sleeve for a removal tool 100 according to an exemplary embodiment of the invention.
  • the sleeve 177 is formed as a hollow circular cylindrical body with a continuous axial through hole, wherein on an inner wall 175 of the sleeve 177 radially offset by 90 ° to each other two strain gauges are glued as load-sensitive elements 108. These two load sensitive elements 108 serve to receive load signals during operation of the tunnel boring machine 180 when the associated mining tool 100 is mounted to the wellhead 150. During operation of a tunnel boring machine 180 there is a strong heating of the mining tools 100, in particular in the area of the discs 106.
  • load-sensitive Elements 108 that are in FIG. 2 are denoted by "1" and "3” with two other similar load-sensitive elements 108 (in the spatial representation of FIG. 2 not shown, but in that Substitute circuit diagram with "R2" and "R4" designated and drawn in the top right of the inner wall 175 drawn) connected to a bridge circuit.
  • These other two load-sensitive elements 108 serve to receive reference data which are intended to enable temperature compensation independent of load or stress.
  • FIG. 3 shows a sleeve 177 of a sensor assembly 112 according to another exemplary embodiment of the invention.
  • a membrane-like and elastic planar plate 173 is provided inside the hollow circular cylindrical inner wall 175 (for example pressed or worked out together with the hollow cylinder from a common blank) on which four load-sensitive elements 108 are approximately offset by 90 ° in the radial direction X- or cross-shaped are mounted. These can in turn be designed as strain gauges.
  • the plate 173 may in particular be formed integrally with the inner wall 175 associated hollow circular cylindrical body of the sleeve 177, for example by blind holes are formed in a fully cylindrical body (for example made of stainless steel) on both sides, which are separated from each other in the axial direction by the plate 173 are.
  • the plate 173 can be pressed as a separate component in the interior of a hollow cylindrical sleeve 175.
  • the four load-sensitive elements 108 can be interconnected to form a full-bridge circuit for the purpose of temperature compensation.
  • the load-sensitive elements 108 are arranged in sensory sensitive and mechanically stable position inside the sleeve 177 and thus reliably protected against destruction during assembly or during operation of the tunnel boring machine 180 with high detection accuracy.
  • a sleeve 177 is shown, in which four load-sensitive elements 108 are all mounted on the inner wall 175 of the hollow circular cylindrical sleeve 177. Again, the four load-sensitive elements 108 are combined into a bridge circuit. Again, two of the four load-sensitive elements 108 are used for the actual recording of measurement signals, whereas the other two load-sensitive elements 108 are designed for temperature compensation by means of full-bridge connection.
  • FIG. 5 16 shows a cross-section of a mining tool 110 for a drill bit 150 of a tunnel boring machine 180 according to an exemplary embodiment of the invention.
  • the disc fixture 104 is formed here of a bit mounting block 504 for drill bit mounting and a C-piece 500 for receiving and mounting a disc axis 502 of a disc 106.
  • FIG. 5 also shows a mounting screw 110, which serve to assemble the components together.
  • a sleeve 177 of a sensor assembly 112 of the excavating tool 100 Extending approximately parallel to the fastening screw 506 and approximately perpendicular to the disc axis 502 is a sleeve 177 of a sensor assembly 112 of the excavating tool 100, the sleeve 177 being pressed or screwed or hammered into a sleeve receiving hole formed in the disc fastener 104.
  • FIG. 5 shows that due to the massive design of the disc attachment 104 there is a high degree of freedom of choice for a mining tool designer to specify the position and orientation of the sleeve 177. In particular, the independence of the sleeve 177 of the mounting screw 110 increases this design freedom.
  • the sleeve 177 as a thin-walled elastic member, engagement of the sleeve 177 is possible even upon detection of the load data, so that the sleeve 177 itself is part of the load sensitive system and thus synergistic with the load sensitive elements 108 (not shown in FIG. 5 ) cooperates.
  • FIG. 6 shows the result of a finite element analysis performed on a disc attachment 104 of a mining tool 100. Based FIG. 6 It can be seen that in certain areas of the disc fastening device 104, a particularly high sensitivity or force peaks can be ascertained, which increase the measuring accuracy if a sensor arrangement 112 is implemented at these locations. Since, according to the invention, a sensor arrangement 112 can be provided and positioned independently of a fastening element 110 (to be attached at predetermined positions), this makes it possible to achieve a particularly high accuracy of a detected load.
  • FIG. 7 is a perspective view of a mining tool 100 according to an exemplary embodiment of the invention.
  • FIG. 7 In the embodiment according to FIG. 7 two mutually substantially orthogonally oriented sleeves 177 a sensor assembly 112 are inserted into the interior of the C-piece 500 of the disc attachment 104.
  • the axes of the sleeves 177 each extend orthogonal to a disc rotation axis. It has been shown that particularly sensitive sensor data can be recorded with this configuration.
  • the position of the fastening screws 110 is in FIG. 7 shown.
  • FIG. 8 again shows an exploded view of in FIG. 7 in particular, and shows how the sleeves 177 can be inserted into respectively drilled sleeve receiving holes 800.
  • the hollow lumen of the sleeves 177 not only allows electrical cables to be passed through to energize and / or signal the load sensitive elements 108, but also contributes to the resilience of the sleeve 177 itself the accuracy of the sensory measurement is advantageous.
  • the open on both sides hollow lumen the sleeve 177 may be used to engage a tool when the sleeve 177 is to be replaced (for example, by wear).
  • FIG. 9 shows a diagram 900, the sensitivity of in FIG. 2 to FIG. 4 shown sensor assemblies 112 can be removed.
  • the diagram 900 has an abscissa 902 along which a recorded measurement signal is plotted. Along an ordinate 904, a force F acting on the respective load-sensitive element 108 is plotted.
  • a curve 906 corresponds to the sensor arrangement 112 according to FIG. 2
  • a curve 908 corresponds to the sensor arrangement 112 according to FIG FIG. 3
  • a curve 910 corresponds to the sensor array 112 according to FIG FIG. 4 .
  • FIG. 9 shows that, in particular, the sensor arrangement 112 according to FIG. 3 highest sensitivity with low hysteresis and high linearity allows.
  • FIG. 10 shows a plot 1000 which in turn has the abscissas 902 and the ordinate 904.
  • a first set of curves is compared, showing sensor arrangements 112 according to the invention with load-sensitive elements 108 attached to a sleeve 177 (curve 1002 refers to a design corresponding to FIG FIG. 3 whereas curve 1004 corresponds to a design FIG. 4 refers).
  • curve 1002 refers to a design corresponding to FIG. 3
  • curve 1004 corresponds to a design FIG. 4 refers.
  • measurement data for three conventional sensor arrangements are shown in which load-sensitive elements have been integrated into a fastening element (family of curves 1006).
  • FIG. 11 shows a plan view of a disk 106 of a mining tool 100 according to an exemplary embodiment of the invention.
  • the sleeve 177 is passed through the disk axis (for example pressed in) and therefore absorbs sensor data at a highly sensitive position.
  • two load-sensitive elements 108 are arranged along a circumference of the disc axis 502.
  • FIG. 12 schematically shows a disk 106, which is received on a disc attachment 104.
  • the normal force F N acts on the disk 106, which is also exposed to a rolling force F R , with which the disk 106 rolls around the axis 120 while it removes rocks.
  • a lateral force F S also acts on the disk 106.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP15713516.1A 2014-04-08 2015-04-02 Hochpräzise sensorik zum ermitteln einer mechanischen belastung eines abbauwerkzeugs einer tunnelbohrmaschine Active EP3129593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014105014.2A DE102014105014A1 (de) 2014-04-08 2014-04-08 Hochpräzise Sensorik zum Ermitteln einer mechanischen Belastung eines Abbauwerkzeugs einer Tunnelbohrmaschine
PCT/EP2015/057361 WO2015155124A1 (de) 2014-04-08 2015-04-02 Hochpräzise sensorik zum ermitteln einer mechanischen belastung eines abbauwerkzeugs einer tunnelbohrmaschine

Publications (2)

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EP3129593A1 EP3129593A1 (de) 2017-02-15
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ES2742126T3 (es) 2020-02-13
BR112016023263A2 (es) 2017-08-15
JP6484699B2 (ja) 2019-03-13
CN106414898A (zh) 2017-02-15
US20170122103A1 (en) 2017-05-04
BR112016023263B8 (pt) 2022-11-22
CA2944967C (en) 2021-12-28
AU2015243595A1 (en) 2016-11-10
JP2017511436A (ja) 2017-04-20
NZ725536A (en) 2019-12-20
RU2688997C2 (ru) 2019-05-23
RU2016140704A3 (es) 2018-10-11
EP3129593A1 (de) 2017-02-15
CN106414898B (zh) 2019-11-19
CL2016002533A1 (es) 2017-01-20
US10151201B2 (en) 2018-12-11
AU2015243595B2 (en) 2019-06-20
BR112016023263B1 (pt) 2022-03-29
WO2015155124A9 (de) 2015-12-17
WO2015155124A1 (de) 2015-10-15
DE102014105014A1 (de) 2015-10-08
CA2944967A1 (en) 2015-10-15
RU2016140704A (ru) 2018-05-08

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