• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Load detection unit with a resilient load carrier arrangement for receiving the load (10) and a sensor (3) for under the load to be detected (10) deformation of the load carrier assembly, wherein between the load carrier assembly and the sensor (3) operable a deformation transfer unit (6) is. By this load detection unit is a method in which additionally a deformation transfer unit is provided, which decreases during operation, the deformation of the load carrier assembly and transmits as a modified force / displacement on the sensor.
    公开号:CH713640A2
    申请号:CH00504/17
    申请日:2017-04-13
    公开日:2018-09-28
    发明作者:Stuker Olivier
    申请人:Digi Sens Ag；
    IPC主号:
    专利说明:

    Description: The present invention relates to a device for measuring a load according to the preamble of claim 1 and a method for measuring a load according to the preamble of claim 11.
    Load measuring devices of the type mentioned are widely used and are used for short-term or long-term monitoring of machine parts or structures of all types. They are used, for example, for monitoring the permissible voltage in the supporting ropes of networks that are used as stone chip protection or in ground anchors buildings. Such applications have in common that the operating loads in each element to be monitored, be it a rope or a pull rod, can be quite high, from a few hundred kilos to the range of several tons, whereby for safety reasons an overload safety in multiple (three, five or even ten times) of the operating load.
    In safety nets for falling rocks, for example, it is known that smaller rocks often fall as harbingers of larger falling rocks, which must be reliably detected. Likewise, after the decline of larger pieces of rock, it must be possible to measure the load on the network to determine whether it can continue to be used. A load measuring device must then be arranged in each rope of the network anchored to the ground.
    The same applies to the example of an earth anchor. Smaller ground movements have to be recognized and with larger ground shifts the maximum load that has acted on the individual anchor must be measured reliably.
    Among the numerous known embodiments of such load measuring devices for a variety of purposes, a distinction can be made between those which are mounted on the rope or the tie rod itself, that is to say measure its deformation, and those which are arranged on the anchorage of the rope or the tie rod , In these, in turn, load measuring devices are known which measure the deformation of the anchoring and those which are mounted directly between the cable or the tie rod and the anchoring, that is to say are exposed to the load. In the latter case, to which the present invention relates, a rope is often pulled through the hole of a plate belonging to the anchorage, and on the other side a thickening is arranged on the rope, which is then supported by a support on the plate, the tension in the rope on the Plate transfers. The support in turn is designed to measure the tensile forces transmitted by the rope.
    For example, disk-shaped ring load cells with a cylindrical outside, which have a central hole through which the rope runs, are known. The tensile forces transmitted by the rope act on the top of the ring load cell, which in turn is supported on an anchoring plate, so that its cylindrical outer circumference deforms like a barrel or bulges slightly towards the outside. This deformation can be detected by strain gauges. To protect the strain gauges, it is often provided that the base and top surface of the ring load cell protrude flange-like over the cylindrical outside, and the chamber thus created with the strain gauges arranged therein is closed by a sheet metal welded to the flanges all around.
    This has the advantage that such a ring load cell has a long service life in the range of 10 years, but the disadvantage that the drift inherent in the strain gauges cannot be corrected in the measured values. In addition, such ring load cells are expensive, among other things, since at least 4 strain gauges are required: two on opposite sides of the ring load cell, which are arranged in a crossed manner to separate out temperature differences.To compensate for asymmetries in the ring load cells, more than two pairs of strain gauges are often necessary.
    Accordingly, it is the object of the present invention to provide a device for measuring a load which is less expensive to manufacture, is cheaper and, above all, is easy to produce in large quantities.
    This object is achieved by a device with the features of claim 1 and by a method with the features of claim 11.
    Characterized in that a deformation transmission unit is provided between the load carrier arrangement, which transmits the load transmitted via the cable or the tension rod to an anchoring plate, and the sensor for this load, the load carrier arrangement and associated sensors can be simplified and thus designed inexpensively. Above all, this arrangement makes it possible to provide less, for example a single sensor, for reliable measurement data.
    In particular, the fact that a deformation transmission unit is provided, which reduces the deformation of the load carrier arrangement during operation and transmits it to the sensor as a changed force / displacement load, enables a sensor not on the load carrier arrangement itself, but removed from it and without consideration the geometry and deformation of the load carrier arrangement can be arranged. This allows a cost-effective design of the load carrier arrangement.
    In addition to the task set, drift-proof vibration-string sensors can be used with the load detection unit according to the invention or with the method according to the invention, which eliminates the maintenance for resetting a drift of the measured values and is thus maintenance-free in the range of 10 years and beyond and flawless, generate particularly drift-proof and very finely resolved measured values.
    CH 713 640 A2 [0013] Further preferred embodiments have the features of the dependent claims.
    The invention is described below with reference to the figures. It shows:
    1 is a side view of an assembled load detection unit according to the invention,
    2 shows a further view of a load detection unit according to FIG. 1, but in the unassembled state,
    3a and 3b schematically the load carrier unit of a load detection unit according to the invention unloaded and loaded,
    3c and 3d schematically the load carrier unit of a load detection unit according to the invention in the loaded state, wherein different sensors are used,
    4 shows a load detection unit according to the invention with sensors designed as strain gauges, and
    5 shows a further embodiment according to the invention.
    Fig. 1 shows a preferred embodiment of a load detection unit 1, with a load carrier arrangement formed here as a tubular profile 2, a sensor 3 and two lever arrangements 4 and 5, which together form a deformation transmission unit 6, which acts on the sensor 2.
    A here designed as a tie rod 7 pulling member protrudes from below through the tubular profile 2 and is screwed on its top 8 with a nut 9 and a washer 9 ', so that the load 10 acting in the tie rod 7 via the nut 9th and washer 9 'acts on the top 8 of the tubular profile 2 and this squeezes against a schematically shown anchoring plate 11. The anchoring plate 11 is supported on the ground or on a structure or component which is intended to take up the load of the tension member or tension rod 7.
    The tubular profile 2 consists of a resilient material and is solid, so that it can carry the load 10 and an overload, which corresponds to double, triple, five times or, for example, ten times the load. It has been shown that tubular profiles from the aluminum extrusion which is desirable according to the invention are those which are designed as extruded profiles (see below) which do not yet elastically deform under the maximum load, that is to say would in principle be dimensioned sufficiently strongly, yet quickly «soft »Will and finally fail after a comparatively short time.
    This means that the tubular profile 2 must be oversized, depending on the alloy in the double overload range. This in turn leads to the tube profile being dimensioned very stiff with regard to the simple load or the operating load and being deformed correspondingly slightly, which, in addition to the space problems, correspondingly complicates the detection of the deformation of the tube profile 2 by deformation sensors such as, for example, the commonly used strain gauges ,
    According to the invention, a deformation transmission unit 6 is now provided, which reduces the deformation of the tubular profile 2 and transmits it to the sensor 3 via a displacement / force transmission. The displacement / force ratio is dimensioned such that the sensor 3 is stressed according to its input characteristics, i.e. is subjected to a deformation path or a deformation force for which it can generate a detection signal as intended. It should be expressly noted here that sensors are known which either detect a deformation path or a deformation force. However, sensors are also known which themselves deform somewhat as a result of the force acting on them, so that the displacement / force translation according to the invention is not only to be understood as acting alternatively, but also cumulatively. See also the description for Figures 3a to 3d. For this purpose, as can be seen from FIG. 1, the lever arrangements 4, 5 are dimensioned weaker, for example more flexible than the body of the tubular profile 2.
    A protruding against the anchoring plate 11 from the tubular profile 2 support 12 holds the load detection unit 1 during assembly or maintenance in an approximate operating position, i.e. prevents tilting due to the weight of the deformation transmission unit and the sensor 3. A lip 13 protruding into the hollow space of the tubular profile 2 serves as an installation safety device to prevent the pull rod 7 (or a load rope) from being mounted through the hollow space of the tubular profile, so that it tilted by 90 degrees e.g. with the side surface visible in the figure rests on the anchoring plate 11.
    There is a load detection unit 1 according to the invention with a resilient load carrier arrangement (here designed as a tubular profile 2) for receiving the load 10 and a sensor 3 for the deformation of the load carrier arrangement taking place under the load 10 to be detected, wherein between the load carrier arrangement and the sensor 3 a deformation transmission unit 6 is arranged operable.
    CH 713 640 A2 [0023] The deformation transmission unit is thus preferably designed in such a way that, during operation, it transmits and translates at least one of the transmitted deformation movement and deformation force to the sensor.
    It also follows that the load carrier arrangement is designed as a hollow profile, in which the load acts transversely through a cavity of the profile during operation. For example, in an exemplary embodiment not shown in the figures, a box-shaped hollow profile can be used, with a base and top surface parallel to the anchoring plate, the side walls of which deform outward in a barrel-like manner when loaded, with lever arrangements similar to lever arrangements 4, 5 of FIG. 1 on one the side surfaces are provided. In the case of such a hollow profile, which is determined by a person skilled in the art according to the specific case, however, the load will always act transversely (and not approximately axially) to the cavity of the profile, so that this can be squeezed in the manner described and the deformation transmission unit can remove this deformation as intended.
    Finally, it emerges for the load carrier arrangement that, as shown in FIG. 1, it is designed as a tubular profile, in which the load acts on a diameter of the tubular profile during operation. In addition to the embodiment as a general hollow profile, this embodiment has the advantage that the individual load carrier arrangement can be produced as a simple cut of an extruded or extruded profile, preferably an aluminum extruded profile, and is therefore comparatively inexpensive to produce - with the further advantage that the production is straightforward and is freely scalable without major investments.
    [0026] Two lever arrangements 4, 5, which clamp the sensor 3 between them, are preferably provided on the load carrier arrangement according to the invention, be it a hollow profile or not.
    At this point it should be added that, according to the invention, a load carrier arrangement can also be provided, which is constructed analogously to a ring load cell, that is to say has a continuous opening through which a pull rod or a pull rope protrudes, so that during operation the load runs along a axis passing through the opening. Such a load carrier arrangement is to be designed by a person skilled in the art for the specific case in such a way that the deformation of the load carrier arrangement can be appropriately removed via the deformation transmission device according to the invention and transmitted to a sensor by force / displacement translation.
    Fig. 2 shows a view obliquely from above of the load detection unit of Fig. 1 to illustrate its structure. As mentioned in relation to FIG. 1, the load carrier arrangement (tubular profile 2) is designed together with the deformation transmission device 6 (here consisting of the two lever arrangements 4, 5) as a one-piece extruded profile which has been cut to a suitable length from a profile bar. A vertical bore 15 for a tension rod 7 (FIG. 1) or a tension cable has the dashed line 16 in which the load 10 acts on the top of the tubular profile 2. On the upper side 8 there is a cambered bearing surface 17 for an opposing washer 9 '(FIG. 1), the bearing surface 18 for an anchor plate 11 (FIG. 1) or another base is flat.
    The flat design of the lever arrangements 4 and 5 can be seen, since these belong to the same cut of the continuous casting profile as that of the tubular profile 2.
    Head regions 20 and 21 of the lever arrangements 4 and 5, to which a vibrating string sensor 23 is attached here, can also be seen. In the embodiment shown, each head region has a double lip 24, 25, which preferably have parallel grooves 26 running on their inner sides (i.e. running in the extrusion direction). These grooves 26 represent sections of a counter-thread for the screws 27, with which the sensor 23 is operably attached to the deformation transmission unit 6 (or its lever arrangements 4, 5). Again, such thread grooves can be produced in the simplest way, and above all inexpensively, using the extrusion process.
    From Fig. 2 (which is like Fig. 1 to scale) it can be seen that the thickness of the lever assemblies 4, 5 is reduced compared to the wall thickness of the tubular profile 2, so that it is less rigid than the tubular profile 2, i.e. more flexible, i.e. are more easily deformable. In operation, the tubular profile 2 deforms under the action of the load 10 acting in the direction of the axis 16 in such a way that the vertical wall sections 27, 28 are curved slightly outwards, so that the lever arrangements 4, 5 want to spread apart.
    According to the invention, there is a resiliently deformable profile, preferably an extruded profile, with a tubular section 2 and two flat lever arrangements 4, 5 arranged longitudinally on the outside thereof with a smaller thickness compared to the tubular section 2, which are next to one another but at a distance are arranged to each other and jointly extend away from the outside of the tubular section, an opening 15 designed to receive a load element being provided transversely to the tubular section 2, in the middle thereof and transversely to the surface extension of the lever arrangements 4, 5, the tubular section 2 and the lever arrangements 4, 5 are designed such that when the tubular section 2 is compressed in operation in the direction of the axis 16 of the opening 15, the latter deforms in such a way that the lever arrangements 4, 5 spread. The lever arrangements 4, 5 are preferably designed to be more flexible than the hollow body section 33, which connects the lever arrangements 4, 5.
    Furthermore, there is an embodiment of the load detection unit according to the invention, in which at the outer ends of the flat levers 4, 5 each have a double lip (lips 24, 25 with other inner sides parallel to the length
    CH 713 640 A2 of the hollow body 2 provided threaded grooves 26 are provided, wherein a support 12 preferably protrudes from the inside of the hollow body 2 into the interior of the cavity of the hollow body 2.
    It is further preferred that the hollow body has on its one outer side a longitudinal positioning surface 18 into which the opening 15 projects, and preferably a longitudinally transverse load bearing section 17, in which the opening is provided, is provided opposite for flattening protrudes into it.
    Fig. 3a shows schematically as a line drawing a cross section through an extruded profile 30 of a load detection unit according to the invention, which has a tubular profile 2 and two lever arrangements 4, 5 of a deformation transmission device 6 and is unloaded (load 10 of Fig. 1). To relieve FIGS. 3a to 3d, the anchoring plate 11 (FIG. 1) is omitted. The line drawing is intended to clarify the configuration of the load detection unit or its deformation under a load 10 (FIG. 1), and thus in particular the function of the deformation unit 6. It should be emphasized here that the representation is in relation to the preferred embodiment according to FIGS 1 and 2 takes place, but applies mutatis mutandis to all different configurations which have a load carrier arrangement according to the invention with a deformation transmission device which acts on one or more sensors and which are configured by the person skilled in the art depending on the specific case.
    3a to 3d, 4 and 5, A denotes the height of the unloaded tubular profile 2, and B the corresponding distance between the head ends 4 ', 5' of the lever arrangements 4, 5.
    From Fig. 3a it can be seen that in the unloaded state, the tubular profile 2 is egg-shaped in cross-section, with wall sections 32, 33 extending vertically in the embodiment shown, and the lever arrangements protrude above and below the side section 33 from the tubular section 2.
    Fig. 3b shows the extruded profile 30 under a load 10. It can be seen that the height of the pipe section 2 has become smaller than its original height A in the unloaded state. Accordingly, the vertical wall sections 32, 33 are curved slightly outward in a barrel shape and the upper and lower curves 34, 35 are somewhat flattened. As a result, the inclination of the lever arrangements 4, 5 has increased, both of which are pivoted away from one another in the direction of the arrows 36, 37. The distance between their head ends 4 ', 5' has increased compared to the distance B in the unloaded state. The deformation of the tubular profile 2 is comparatively small, the deformation on the heads 4 ', 5' of the lever arrangements 4.5 is large - there is a translation of the deformation path "difference in the height of the tubular profile" to "distance of the head ends of the lever arrangements". The person skilled in the art can determine this translation in a specific case by suitable design, for example by the cross section of the tube profile (contour and wall thickness), the location of the articulation of the lever arrangements and the length of the lever arrangements.
    Fig. 3c shows the continuous casting profile 30 with a sensor 40, also shown schematically in the manner of a line drawing, that is, a load detection unit 41 according to the invention, in the loaded state (whereby, as mentioned, the anchoring plate 11 of Fig. 1 omitted to relieve the figure is).
    In the embodiment shown in FIG. 3c, the sensor 40, or its mounting points at the head ends 4 ', 5' of the lever arrangements 4, 5 are not or only insignificantly deformable or displaceable, and despite the effect of Load 10 remains essentially at distance B. Correspondingly, the lever arrangements 4, 5 pivoted at their roots according to the arrows 3.37 have spring elasticity and exert tension on the sensor 40 according to the double arrow 38. The magnitude of this tensile load depends on the dimensioning of the lever arrangements 4, 5 (essentially moment of inertia and length) and, given the dimensioning, is a measure of the deformation of the tubular profile 2. In a specific case, the person skilled in the art can measure the tensile load by appropriately dimensioning the extruded profile 30 match the input variables of a sensor intended for use, here sensor 40.
    Instead of the translation of the deformation path "difference in height of the tube profile" to "distance of the head ends of the lever arrangements" (see also the description above for FIG. 3b) from a translation of the deformation path "difference in height of the tube profile" can be spoken of as a “force effect on the sensor”, ie a way to force transmission. This path to force translation results from the deformation of the lever arrangements 4, 5.
    This results in particular in a profile in which the lever arrangements (4, 5) are designed to be more flexible than the load carrier section (here the wall section 33) which connects the lever arrangements (4, 5).
    3d shows the continuous casting profile 30 with a sensor 50, also shown schematically in the manner of a line drawing, that is to say a load detection unit 51 according to the invention, in the loaded state. In contrast to the sensor 40 from FIG. 3c, the sensor 50 is deformable or its connection points are displaceable, as is the case, for example, with a vibrating string sensor. A vibrating string sensor is advantageously drift-proof, inexpensive and can be easily encapsulated.
    Correspondingly, the curvature of the lever arrangements 4, 5 turns out somewhat less, as does the tension that is exerted on the sensor 50 at the head ends 4 ', 5' according to the double arrow 52.
    The result is a translation of the deformation path “difference in height of the tubular profile” to “distance between the head ends of the lever arrangements” together with a “force acting on the sensor”.
    CH 713 640 A2 As mentioned, the person skilled in the art can now determine this translation with regard to the assigned sensor (3, 23, 40, 50 or 70) such that a deformation path of the load carrier arrangement is a suitable path for the deformation transmission unit at the location of the corresponds to the assigned sensor, or a suitable force action on the assigned sensor, or, preferably, a suitable combination. A suitable path, a suitable force or a suitable combination of path and force is a path, a force or a combination of path and force which corresponds to the intended input values of the assigned sensor.
    The result is a load detection unit in which the deformation transmission unit 6 has at least one lever arrangement 4, 5 connected to the load carrier arrangement, which is moved by an operational load-related deformation movement of the load carrier arrangement 2 and thereby exerts a transmission movement and / or a transmission force on the sensor 3 (which corresponds or correspond to the input characteristic curves of the sensor 3), FIG. 4 schematically shows a load detection unit 61 according to a further embodiment of the present invention. The head ends of the lever arrangements 4, 5 are connected to one another at a distance B via a rigid support 60. The action of the load 10 causes the lever arrangements 4, 5 to bend in the same way as is the case with the rigid sensor 40 from FIG. 3c. In the present case, this bend is now detected by, for example, strain gauges 62, 63, which in turn is a measure of the load 10. There is a translation of the deformation of the tube profile, i.e. “Difference in the height of the tubular profile” to a greater deformation “bending of the lever arrangement”. Again, the person skilled in the art can interpret this translation appropriately in terms of the strain gauges to be used by dimensioning the load carrier arrangement and the deformation transmission unit.
    5 schematically shows a load detection unit 71 provided with a sensor 70 and which has only one lever arrangement 4, the sensor 70 being fixed to the anchoring plate 11 (or only relative to it) via a carrier 72.
    In summary, a sensor (according to its intended parameters (force / travel)) is claimed by a (deliberate, see above) comparatively small deformation of the tubular profile or the load carrier arrangement, the skilled person stressing this stress by appropriately dimensioning the deformation transmission unit and the load carrier arrangement on the can use the sensor used.
    It follows that the deformation transmission unit according to the invention preferably has at least one lever arrangement which is connected to the load carrier arrangement and, during operation, absorbs a deformation of the load carrier arrangement taking place under the acting load and transmits it to the sensor as a load.
    Furthermore, a load detection unit results, in which the deformation transmission unit is preferably at least partially resilient, in such a way that it deforms in a predetermined manner when the load carrier arrangement is deformed due to load.
    Furthermore, in one embodiment of the invention, there is a load detection unit in which the sensor is designed as a force-absorbing sensor, preferably as a vibrating string sensor, and the deformation transmission unit deforms in a spring-elastic manner during operation such that the movement of the deformation transmission unit at the connection point to the force-absorbing sensor is reduced, preferably essentially eliminated.
    Furthermore, in one embodiment of the invention there is a load detection unit in which the sensor is designed as a displacement sensor, preferably as a strain gauge, and the deformation transmission unit is designed such that the movement of the deformation transmission unit at the connection point to the displacement sensor is opposite that at the Load carrier arrangement recorded deformation translated, preferably enlarged, fails.
    Finally, in one embodiment of the invention, a load detection unit results, in which the sensor detects a deformation path, a force or a combination of force and path.
    The inventive method for measuring a load with a resilient load carrier arrangement for receiving the load and a sensor for the deformation of the load carrier arrangement taking place under the load to be detected consists in that a deformation transmission unit is additionally provided which decreases the deformation of the load carrier arrangement during operation and transmits to the sensor as at least one of the variables resulting from the stresses caused by force and displacement, so that a force / displacement stress which is changed as a result compared to the deformation of the load carrier arrangement is transmitted to the sensor. The at least one of the variables resulting from the deformation of the load carrier arrangement, such as the deformation force and the deformation path, is preferably translated by the deformation transmission unit in such a way that the translated variables correspond to the input characteristic curves of the assigned sensor.
    Preferably, a vibrating string sensor is used as the sensor, the deformation transmission unit being designed to be resilient, such that a predetermined operating force acts on the vibrating string sensor (at a predetermined operating load).
    It is further preferred that at least one strain measuring element, preferably a strain gauge tire, is used as the sensor and this is arranged on a spring-elastic area of the deformation transmission unit
    CH 713 640 A2, the spring elasticity of this area being such that its deformation is greater than the deformations of the load carrier arrangement.
    权利要求:
    Claims (20)
    [1]
    claims
    1. Load detection unit with a resilient load carrier arrangement for receiving a load (10) and a sensor (3) for the deformation of the load carrier arrangement taking place under the load to be detected (10), characterized in that an operable between the load carrier arrangement and the sensor (3) Deformation transmission unit (6) is arranged.
    [2]
    2. Load detection unit according to claim 1, wherein the deformation transmission unit is designed such that it transmits at least one of the transmitted quantities deformation movement and deformation force to the sensor and thereby translates.
    [3]
    3. Load detection unit according to claim 1, wherein the load carrier arrangement is designed as a hollow profile, in which the load (10) acts transversely through a cavity of the profile during operation.
    [4]
    4. Load detection unit according to claim 1, wherein the load carrier arrangement is designed as a tubular profile (2), in which in operation the load (10) preferably acts on a diameter of the tubular profile (2).
    [5]
    5. Load detection unit according to claim 1, wherein the load carrier arrangement has a through opening (15), wherein in operation the load lies along an axis (16) passing through the opening.
    [6]
    6. Load detection unit according to claim 1, wherein the deformation transmission unit (6) has at least one lever arrangement (4, 5) which is moved by an operating load-related deformation movement of the load carrier arrangement (2) and thereby on the sensor (3) a transmission movement and / or a transmission force exercises.
    [7]
    7. The load detection unit according to claim 1, wherein the deformation transmission unit has at least one lever arrangement which is connected to the load carrier arrangement and, during operation, receives a deformation of the load carrier arrangement taking place under the active load as a movement and transmits it to the sensor as a load.
    [8]
    8. Load detection unit according to claim 1, 6 or 7, wherein the deformation transmission unit has two lever arrangements (4, 5) which clamp the sensor (3) between them.
    [9]
    9. Load detection unit according to claim 1, wherein the deformation transmission unit is at least partially resilient, such that it deforms in a predetermined manner when the load carrier arrangement is deformed by a load.
    [10]
    10. Load detection unit according to claim 1, wherein the sensor is designed as a force-absorbing sensor, preferably as a vibrating string sensor, and wherein the deformation transmission unit is deformed in operation in a spring-elastic manner such that the movement of the deformation transmission unit at the connection point to the force-absorbing sensor is reduced, preferably essentially eliminated.
    [11]
    11. Load detection unit according to claim 1 or 9, wherein the sensor is designed as a displacement sensor, preferably as a strain gauge, and the deformation transmission unit is preferably designed such that the movement of the deformation transmission unit at the connection point to the displacement sensor is larger than the deformation received on the load carrier arrangement ,
    [12]
    12. Load detection unit according to claim 1, wherein the sensor detects at least one of the variables deformation path or force.
    [13]
    13. A resiliently deformable profile, characterized by a hollow body (2) and two flat lever arrangements (4, 5) arranged longitudinally on the outside thereof with a smaller thickness than the tubular section (2), which are arranged next to one another but at a distance from one another and jointly extend away from the outside of the tubular section, an opening (15) designed to receive a load element being provided transversely to the tubular section (2), in the middle of which and transversely to the surface extension of the lever arrangements (4, 5), and wherein the tubular section (2) and the lever arrangements (4, 5) are designed such that when the tubular section (2) is compressed in operation in the direction of the axis (16) of the opening (15), the latter is deformed such that the lever assemblies (15) spread.
    [14]
    14. Profile according to claim 12, wherein the lever arrangements (4, 5) are designed to be more flexible than the hollow body section which connects the lever arrangements (4, 5).
    [15]
    15. A resiliently deformable profile according to claim 13, wherein at the outer ends of the flat lever arrangements (4, 5) a double lip (24, 25) with thread grooves (26) provided on the inside thereof parallel to the length of the hollow body (2) are provided, a support (12) preferably protruding from the inside of the hollow body (2) into the interior of the cavity of the hollow body (2).
    [16]
    16. A resiliently deformable profile according to claim 13, wherein the hollow body has on its one outer side a longitudinal positioning surface (18) into which the opening protrudes, and preferably for ab
    CH 713 640 A2 is provided opposite a longitudinally extending, transversely cambered load-receiving section into which the opening protrudes.
    [17]
    17. A resiliently deformable profile according to claim 13, which is designed as an extruded or continuously cast profile.
    [18]
    18. A method for measuring a load with a resilient load carrier arrangement for receiving the load and a sensor for the deformation of the load carrier arrangement taking place under the load to be detected, characterized in that in addition a deformation transmission unit is provided which decreases the deformation of the load carrier arrangement during operation and as changes the force / displacement load transmitted to the sensor.
    [19]
    19. The method according to claim 18, wherein a vibrating string sensor is used, and wherein the deformation transmission unit is designed to be resilient, such that a predetermined operating force acts on the vibrating string sensor at a predetermined operating load.
    [20]
    20. The method according to claim 18, wherein at least one strain gauge, preferably a strain gauge is used as the sensor and this is arranged on a spring-elastic area of the deformation transmission unit, the spring elasticity of this area being designed such that its deformation is greater than the deformations the load carrier arrangement.
    CH 713 640 A2
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
    2019-03-15| PFA| Name/firm changed|Owner name: DIGI SENS HOLDING AG, CH Free format text: FORMER OWNER: DIGI SENS AG, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    CH00360/17A|CH713600A2|2017-03-21|2017-03-21|Apparatus and method for measuring a load.|CA3056947A| CA3056947A1|2017-03-21|2018-03-09|Device and method for measuring a load|
    EP18715466.1A| EP3601972A2|2017-03-21|2018-03-09|Device and method for measuring a load|
    US16/494,925| US11262251B2|2017-03-21|2018-03-09|Device and method for measuring a load|
    CN201880033722.3A| CN110799818A|2017-03-21|2018-03-09|Device and method for measuring load|
    PCT/CH2018/050009| WO2018170610A2|2017-03-21|2018-03-09|Device and method for measuring a load|
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