• 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:
    This heavy dynamic penetrometer (1), comprises a frame (2), a mast (M), mounted on the frame and positioned substantially vertically during a test, a drill string (12) having a penetration tip in the ground, which is disposed at one end (12a) of the drill string, an anvil (13), which bears against the drill string, at one end (12b) opposite the tip, a hammer (22) anvil threshing means, hammer raising means (24, 26, 162, 164) along the mast to a drop height, at which the hammer is released and means for measuring the depression from the point in the ground. The penetrometer further comprises an electronic control unit (6) for controlling the fall height of the hammer (22), which is configured to select, from among several predetermined values (h1, h2, h3), the height of drop to be adopted for the test according to the depression of the tip measured by the measuring means during one or more previous tests, and mechanical means (160) for triggering the fall of the hammer, which are controlled by the electronic unit ( 6) so that the hammer is released at the height selected by the electronic control unit (6).
    公开号:FR3023374A1
    申请号:FR1456438
    申请日:2014-07-04
    公开日:2016-01-08
    发明作者:Navarrete Miguel Benz；Roland Gourves
    申请人:Sol Solution SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a heavy dynamic penetrometer and a method for determining, during a test, the height of fall to be applied to a hammer belonging to a hammer belonging to a heavy hammer and a method for determining, during a test, the height of fall to be applied to a hammer belonging to a hydraulic hammer. to such a penetrometer according to the compactness of the soil. Heavy dynamic penetrometers are commonly used in geotechnical soil investigation. In particular, these penetrometers are generally used to measure the compactness of hard soils, such as foundation soils. FR-A-2 987 444 discloses in particular a type of heavy dynamic penetrometer, which is marketed by SOL SOLUTION. This penetrometer comprises a chassis equipped with track tracks on the ground surface. A mast is mounted on the chassis. This mast is positioned substantially vertically during a test and is generally articulated on the frame. The penetrometer also has a drill string, at the end of which is installed a tip of penetration into the ground. An anvil is resting against the drill string at the end opposite the tip and a hammer is provided to beat the anvil. This hammer has for example a mass of about 64 Kg and is dropped, during a test, at a constant height of about 75 cm, to cause the drillstring into the ground. The mass is raised to its drop height by means of a jack and a measuring sensor is integrated in the penetrometer to measure the depression of the tip in the ground. Such a penetrometer is said to constant threshing energy because the drop height and the mass of the hammer can not be modified by the user.
    [0002] The disadvantage of a constant threshing energy penetrometer is that it is not able to detect "soft" soil layers, which pose particular problems for geotechnical engineers. Indeed, a large amount of energy released during the impact of the hammer on the anvil causes a very significant depression of the tip in the ground, so that the localized layers of "soft" soil are not detected during 'A try. To overcome this drawback, some penetrometer are equipped with a hammer with adjustable mass, that is to say that the user can add or remove portions of the hammer to vary the hammer threshing energy on the anvil .
    [0003] Similarly, other penetrometer models offer the possibility of varying the drop height of the hammer by adding or removing spacers above the anvil. However, the operations of manually varying the mass of the hammer or the drop height of the hammer require to stop the sounding since it is in particular to open the security cage inside which slides the hammer. This results in increased probing time and a risk of injury to the operator during the procedure. In addition, removing or adding modules to the hammer to change its mass changes the geometry of the hammer and can disturb the measurement of the depression of the tip in the ground. It is then necessary to recalibrate the sensors at each change of geometry of the hammer. It is these drawbacks that the invention intends to remedy more particularly by proposing a heavy dynamic penetrometer in which the hammer threshing energy on the anvil is automatically adjusted to each test depending on the nature of the ground being probed. To this end, the invention relates to a heavy dynamic penetrometer, comprising a chassis, a mast, mounted on the chassis and positioned substantially vertically during a test, a drill string, comprising a tip of penetration into the ground, which is disposed at one end of the drill string, an anvil, which abuts against the drill string, at an end opposite the tip, an anvil threshing hammer, means for raising the hammer along the mast to a drop height, at which the hammer is dropped and means for measuring the depression of the tip in the ground. According to the invention, the penetrometer further comprises an electronic unit for controlling the drop height of the hammer, which is configured to select, from among several predetermined values, the height of drop to be adopted for the test according to the depression of the tip measured by the measuring means during one or more previous tests, and mechanical means for triggering the fall of the hammer, which are controlled by the electronic unit so that the hammer is released at the height selected by the electronic control unit.
    [0004] Thanks to the invention, the drop height of the hammer can be adjusted automatically by the mechanical means of triggering the fall of the hammer, under control of the electronic unit. In addition, the drop height is selected according to the depression of the tip measured during the previous test (s). The drop height is selected from a plurality of determined values, to obtain an optimum sink value, or at least within a confidence interval, i.e., in an interval for which the penetrometric test is reliable. According to advantageous but non-mandatory aspects of the invention, a heavy dynamic penetrometer may incorporate one or more of the following features, taken in any technically permissible combination: - The hammer raising means comprise a hammer support cleat and the means mechanical release mechanisms comprise latch release windows, which are distributed over the height of the mast and which are respectively located at different heights corresponding to said predetermined values, and in that the electronic unit controls the opening of the windows. - The windows each comprise a flap hinged to the mast and in that the mechanical triggering means further comprise locks selectively locking the opening of the window flap, which are controlled by the electronic control unit. - The locks each comprise a finger which is movable in translation to selectively block the opening movement of the leaf of the window. - The locks each comprise a spring, configured to push the finger against a surface of the leaf, under control of the electronic unit. - The hammer raising means further comprises two pull chains of the cleat and in that the cleat is tiltably linked to the chains and tilts under the weight of the hammer in an open window when it reaches the height of it. - The mast comprises means for automatically returning the window flap in a closed position. - The automatic return means include a tilting hinge leaf and a leaf return spring in the closed position, which is wrapped around the hinge. - The cleat includes bearing bearings on the mast, to rise along it.
    [0005] The invention also relates to a method for determining, during a test, the drop height of a hammer belonging to a penetrometer as described above. According to the invention, this method comprises the following steps: a) measuring the depression of the point in the ground during one or more tests for which the hammer's drop height is constant, b) according to the depression measured in step a), select a new drop height for the hammer among the predetermined values. The invention and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a heavy dynamic penetrometer according to its principle, given solely by way of example and made with reference to the drawings, in which: - Figure 1 is a perspective view of a heavy dynamic penetrometer according to the invention; - Figure 2 is a perspective view of a support cleat of a hammer belonging to the penetrometer; FIG. 3 is a partial section illustrating the rise of the hammer along a mast, in which the cleat supports the hammer and rolls along the mast; FIG. 4 is a section similar to FIG. 3 in which the cleat tilts in a window of the mast under the weight of the hammer, - Figure 5 is a partial view and side of the mast, illustrating a closed window, which is locked by locks, - Figure 6 is a sectional view. a lock in configu Figure 7 is a section similar to Figure 6 of a latch in deployed configuration, and Figure 8 is a diagram illustrating an algorithm for determining, during a test, a drop height to be applied. hammer. FIG. 1 shows a heavy dynamic penetrometer 1. This penetrometer 1 comprises a chassis 2 which is equipped with tracks 4 enabling it to move on the surface of the ground. Alternatively not shown, the penetrometer 1 can also be installed in the trailer of a vehicle. A mast M is articulated on the frame 2. This mast M is positioned substantially vertically during a probing test. Indeed, some tests require a slight inclination of the mast relative to the vertical direction. In this document, the vertical direction is defined as a direction parallel to the gravity field g and the "up" and "down" directions must be interpreted with respect to this vertical direction. The mast M is generally retractable and is tilted in a housing 14 of the frame 2 when the penetrometer 1 is not used. In this way, it is possible to fold the penetrometer 1 to place, for example, in the part of a truck or utility. The mast M comprises a lower portion 15 and an upper portion 16. The upper portion 16 is hollow and extends along an axis X16. It delimits several rectangular windows 160, distributed over the height of the mast. More specifically, the windows 160 are aligned in the direction of the height and are delimited on a wall S16 of the part 16. During a sounding, the axis X16 is substantially vertical. In the example, the portion 16 of the mast M defines three windows 160, which are respectively disposed at heights h1, h2 and h3 measured from the bottom of the portion 16, parallel to the axis X16. However, as variants not shown, part 16 may very well include two windows or more than three windows. As can be seen in FIG. 3, the windows 160 each comprise a flapper 161. Hereinafter, a single window is described since the windows 160 are all identical. The leaf 161 is articulated on the part 16 around a hinge 28. The hinge 28 has an axis of rotation X28 which is perpendicular to the axis X16. During a test, the axes of rotation X28 are horizontal. The leaf 161 is articulated with the portion 16 at an upper edge of the window 160 and the hinge 28 is disposed on an inner wall of the portion 16, that is to say on the opposite side to the wall S16. Thus, the tilting of the leaf 161 is inwardly of the portion 16 of the mast M. Furthermore, the hinge 28 is connected to the leaf 161 by a rivet 34 fixed in the leaf, perpendicular to the thickness of the leaf. This rivet 34 is connected to the hinge 28 by a tongue 32 and a not shown spring is wound around the hinge 28, to exert a resilient closing torque of the wing 161. In other words, the spring opposes the opening of the wing 161. In addition, two locks 35 are provided at each window 160 to block the opening movement of the wing 161. As shown in Figure 5, these two locks are each arranged on a side wall of the part 16, that is to say on a wall having its largest common edge with that of the wall S16. In locked configuration, the locks 35 oppose the rotation of the wing 161 and unlocked configuration, the locks 35 do not oppose the rotation of the wing 161. As shown in Figures 5 to 7, the locks 35 each comprise a housing 38, which is fixed on the part 16 and a finger 36 for locking the opening of the wing 161. The finger 36 of each latch 38 is subjected to the elastic load action of a spring 40. The part 16 is provided with finger passage openings 36. In locked configuration of the locks 35, the fingers 36 are deployed through the openings of the portion 16 inside thereof to engage the inner surface of the wing 161. The fingers 36 then form an obstacle to tilting the leaf 161 of the window 160.
    [0006] The penetrometer 1 also comprises a drill string 12 which is housed in a protective shell. This drill string 12 comprises a plurality of rods, or straight bars, which are arranged axially with each other, parallel to the mast M. The drill string 12 comprises, at a lower end 12a, a conical tip penetrating into floor. This tip is not visible in Figure 1. An upper end 12b of the drill string 12 forms a threshing head, which is disposed below an anvil 13 in test configuration. A hammer 22 is provided to fall on the anvil 13 so as to transmit, via the threshing head, a threshing energy to the drill string 12. This threshing energy is proportional to the mass of the hammer 22 and at the height of fall of the latter. The hammer 22 is lifted by a catch 24, which is supported on an upper ring 220 of the hammer 222. In practice, the hammer 22 has a mass equal to 63.5 kg. The hammer 22 is movable around and along an guide bar 20 which, in use, is substantially vertical. The movement of the hammer 22 is carried out in a safety cage 18. The cleat 24 is driven in translation in a vertical direction by means of a system of pulleys comprising two chains 26, a driving pulley 162, which is arranged in the upper part the mast 16 and a driven pulley 164, which is arranged in the lower part of the mast 16. For clarity of the drawing, the two chains are represented symbolically by a dashed line in Figure 1. The two chains 26 extend in parallel to each other between the drive pulley 162 and the driven pulley 164. The stopper 24 is driven in displacement by the chains 26 along the surface S16. As seen in FIG. 2, the cleat 24 comprises an upper base 240 having an upper surface S240 for supporting the hammer 22. In practice, the surface S240 is in contact with a lower surface of the crown 220 of the hammer 22. The cleat 24 comprises two walls 242 which extend downwards from the base 240, perpendicular thereto. These two walls 242 are parallel to each other and are each provided with a bearing 240 for rolling in contact with the surface S16 of the part 16. The bearings 240 are preferably ball bearings. The cleat 24 is attached to the chains 26 via two shaft ends 244a and 244b, which are each inserted into a lateral housing 024 of the cleat 24. The shaft ends 244a and 244b are, on the one hand, immobilized in the housings 024 and are, on the other hand, each inserted into an eyelet of a chain 26. For example, the shaft ends 244a and 244b can be screwed into threads of the catch 24, arranged in a manner similar to the housing 024.
    [0007] Furthermore, the shaft ends 244a and 244b together form a shaft 244 for tilting the catch 24 with respect to the chains 26. An axis X244 for tilting the catch 24 around the shaft 244 is defined. The axis X244 is a horizontal axis in test configuration of the penetrometer 1, which is parallel to the axes X28 of tilting of the leaves 161 of the windows 160. The penetrometer also comprises an electronic control unit 6, having the form of a desk mounted on the frame 2. The control console 6 is equipped with several levers and actuating buttons, allowing the user to manually activate the different features of the penetrometer 1. In particular, the user can control the tilting of the mast 16 or the rise of the hammer 22 by means of the console 6. In addition, the control unit 6 includes a computer, which resolves each test an algorithm to determine an appropriate drop height depending on the nature of the ground probed. This algorithm is explained in more detail below. Furthermore, the penetrometer 1 is also equipped with means for measuring the depression of the drill string 12 in the ground. These measuring means include for example an optical sensor not shown in the figures, which is described in FR-A2 817 344. This optical sensor is carried by the frame 2. It is placed on the ground during a test and measures the depressing the drill string 12 by detecting the passage of optical marks marked on the surface of each of the rods of the drill string 12. These measuring means are able to communicate, after each test, the value of the depression of the drill string 12 to the electronic control unit 6. For example, the transmission of the depression value to the unit 6 can be done wired. Finally, the penetrometer 1 comprises a module 8 for collecting and processing the signals collected by the sensor. This module 8 is an acquisition case, which is mounted on the frame 2 to facilitate the reading of the results by the operator. Thus, the measurement sensor of the depression communicates with both the collection module 8 and the control unit 6. In a test, the hammer 22 is raised upwards by the chains 26 as represented by FIG. arrow F1 in Figure 3.
    [0008] As can be seen in FIG. 4, when the catch 24 reaches the same axial level as an open window, that is to say a window whose leaf 161 is free to tilt, the catch 24 swings in a direction F3 around the shaft 244 under the weight F2 of the hammer 22. The cleat 24 then causes the opening of the window 160 by tilting F4 of the leaf 161 around the hinge 28. Otherwise formulated, the cleat 24 partially enters the window 160 and the window forms a release window of the cleat 24. The release of the cleat 24 causes the fall of the hammer 22 since it is no longer supported by the cleat 24. The drop height of the hammer 22 therefore corresponds to the height of the open window, that is to say the window for which the locks 35 are in unlocked configuration. Thus, three different drop heights for the hammer 22 are possible for the penetrometer 1. The threshing energy can therefore be adapted by varying the drop height of the hammer 22. The control unit 6 automatically controls the opening of the hammer 22. 160, by controlling the locks 35. More specifically, the control unit 6 acts on the expansion of the springs 40, to deploy or not the fingers 36 and block or unblock the opening of the windows 160. In this way, the The electronic unit 6 can change the drop height of the hammer 22. The selective locking of the locks 35 of each window 160 allows to select precisely the height for which the hammer 22 will be dropped.
    [0009] The locks 35 and the windows 160 thus form mechanical means for triggering the fall of the hammer 22, these means being controlled by the electronic control unit 6. In practice, the locks 35 of a single window 160 among the windows of the mast M are unlocked. When the hammer 22 is released, the leaf 161 of the window returns to the closed position by elastic return of the spring wound on the hinge 28 and the closing movement of the leaf 161 causes the tilting, or rectification of the latch 24. The spring wound on the hinge 28 and the latter thus form means for automatically returning the leaf 161 of the windows 160 in the closed position. In a test, the drop height of the hammer 22, that is the threshing energy supplied to the drill string 12, is determined by the method described hereinafter. When probing a soil, the first test carried out with the penetrometer 1 is a test carried out with a nominal threshing energy, that is to say that the hammer 22 is released at a predetermined nominal height, such as for example the height h2. This first test is represented by a step 1000 in FIG. 8. More generally, step 1000 represents the performance of a penetrometric test, that is to say not only the first test but also the following tests. The measurement means of the depression then fall, in a step 1002, the value of depression of the tip of the drill string 12 in the soil during the test.
    [0010] The penetrometric tests are considered reliable when the driving value of the drill string 12 in the soil is within a certain interval, in particular between 2 mm and 20 mm. It is therefore a target or confidence interval. In this way, the test carried out makes it possible to obtain very localized information on the structure, or the stratification of the soil, and in particular makes it possible to detect so-called "soft" or low-compact layers. The control unit 6 recovers from the collection module 8 or the sinking sensor, the value of depression of the drill string 12 in the soil to the previous test and compares, in a step 1004, this value with the upper limit of the interval, which is for example 20 mm. If the depression is greater than 20 mm, the control unit 6 then calculates, during a step 1006, a new height of fall for the hammer 22. More precisely, this new height of fall corresponds to a lower height at nominal height, especially at the nearest height. In other words, this new height corresponds to the height of the window located directly below the window used for the release of the cleat at the nominal height. In the example, starting from a nominal height h2, the drop height calculated by the control unit 6 for the following test is the height h1. On the other hand, if the depression value of the preceding test tip is less than 20 mm, the control unit 6 makes an additional comparison 1008, of comparing the measured value with the lower limit of the interval, which is for example 3 mm. If the measured value is greater than 2 mm, the drop height adopted in previous tests is good since it is within the target range and the drop height is not changed for the following test. However, if the sinking value is less than 2 mm, threshing energy is insufficient. Thus, the control unit 6 calculates, during a step 1010, a new drop height for the hammer 22. This new drop height is greater than the nominal height, and corresponds to the height of the window arranged above of the window used to drop the hammer 22 at nominal height. In the example, the height changes from the nominal height h2 to the height h3.
    [0011] Finally, the new height selected in step 1006, 1010 or 1012 is used to perform the next test, as represented by the return of the arrows connecting steps 1006, 1010 and 1012 with step 1000, which corresponds to the performing a test. Specifically, the electronic unit 6 sends a set signal to each latch 35 to open the window corresponding to the drop height selected in step 1006, 1010 or 1012.
    [0012] In the following test, the depression value considered for the selection of a new drop height will be the depression value obtained with the adjusted height, ie the method is iterative. This algorithm for calculating the drop height of the hammer 22 is solved by the calculator integrated in the unit 6 at each impact and makes it possible to obtain a rapid convergence of the penetration value of the tip in the targeted interval. Thus, the majority of the tests result in a depression included in the target range and the fall height of the hammer is adapted according to the properties of the soil surveyed. In this way, the operator is sure that the tests carried out testify to the actual stratification of the soil, that is to say that the layers of "soft" soil, or low compactness are well detected. In a variant not shown, several tests with constant threshing energy can be performed so that the module 8 can collect a series of driving values. This series can for example be formed of three or four values. Then, the value considered for the adjustment of the drop height of the hammer 22 to the next test can be the average, the maximum value or the minimum value of the series. Alternatively, different terminals of 2 mm and 20 mm for the target range can be selected and entered into the computer. In a variant not shown, the leaf 161 of the windows 160 does not open by tilting of the latch 24 but is opened directly by the control unit 6. In a variant that is not shown, the windows 160 are not aligned in the direction of the height, that is to say that they are offset relative to each other in the horizontal direction. For example, windows 160 may be arranged diagonally. The penetrometer then has as many traction chains as windows 160, each chain supporting a cleat. With this arrangement, only one chain is activated to drop the hammer to the selected height. The technical features of the variants and embodiments envisaged above can be combined with one another to give new embodiments of the invention.
    权利要求:
    Claims (10)
    [0001]
    CLAIMS1.- Heavy dynamic penetrometer (1), comprising: - a frame (2), - a mast (M), mounted on the frame and positioned substantially vertically during a test, - a string of rods (12) , having a penetration point in the ground, which is disposed at one end (12a) of the drill string, - an anvil (13), which bears against the drill string, at one end (12b) opposite the a hammer (22) for thrusting the anvil, means (24, 26, 162, 164) for raising the hammer along the mast to a drop height at which the hammer is released, and means for measuring the depression of the tip in the ground, characterized in that the penetrometer further comprises: an electronic control unit (6) for controlling the fall height of the hammer (22), which is configured to select among several predetermined values (h1, h2, h3), the height of drop to be adopted for the test as a function of the depression of the tip measured by the measuring means during one or more previous tests, and mechanical means (160, 35) for triggering the fall of the hammer, which are controlled by the electronic unit (6) so that the hammer is dropped to the height selected by the electronic control unit (6).
    [0002]
    2. A dynamic penetrometer according to claim 1, characterized in that the hammer raising means comprise a cleat (24) for supporting the hammer (22) and the mechanical triggering means (160, 35) comprise windows (160). ) of the cleat, which are distributed over the height of the mast (16) and which are respectively located at different heights (h1, h2, h3) corresponding to said predetermined values, and in that the electronic unit (6) controls the opening (F4) windows.
    [0003]
    3. A dynamic penetrometer according to claim 2, characterized in that the windows (160) each comprise a leaf (161) articulated on the mast and in that the mechanical trigger means (160, 35) further comprise locks (35) selectively blocking the opening (F4) of the window flap, which are controlled by the electronic control unit (6).
    [0004]
    4. A dynamic penetrometer according to claim 3, characterized in that the locks (35) each comprise a finger (36) which is movable in translation to selectively block the opening movement (F4) of the leaf (161) of the window (160).
    [0005]
    5. A dynamic penetrometer according to claim 4, characterized in that the latches (35) each comprise a spring (40), configured to push the finger (36) against a surface of the leaf (161), under control of the unit electronic (6).
    [0006]
    6. Dynamic penetrometer according to one of claims 3 to 5, characterized in that the raising means of the hammer (22) further comprises two chains (26) for pulling the cleat and in that the cleat is tiltingly connected to the chains and rocker (F3) under the weight (F2) of the hammer in an open window when it reaches height thereof.
    [0007]
    7. A dynamic penetrometer according to one of claims 3 to 6, characterized in that the mast comprises means (28) for automatically returning the leaf (161) of the windows (160) in a closed position.
    [0008]
    8. A dynamic penetrometer according to claim 7, characterized in that the automatic return means include a hinge (28) tilting of the leaf (161) and a return spring of the leaf in closed position, which is wound around the hinge .
    [0009]
    9. A dynamic penetrometer according to one of claims 2 to 8, characterized in that the cleat comprises bearings (240) bearing on the mast, to rise along thereof.
    [0010]
    10.- Method for determining, in a test, the drop height of a hammer belonging to a penetrometer according to one of the preceding claims, this method being characterized in that it comprises the steps of: c) measuring (1000) the depression of the point in the ground during one or more tests for which the height of fall of the hammer is kept constant, then d) according to the depression measured in step a), select a drop height for the hammer among the predetermined values.
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20160003724A1|2016-01-07|
    CL2015001897A1|2016-05-13|
    EP2963184B1|2017-03-08|
    EP2963184A1|2016-01-06|
    FR3023374B1|2016-08-12|
    ES2623769T3|2017-07-12|
    US9719903B2|2017-08-01|
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    KR102360705B1|2020-04-24|2022-02-11|한국철도기술연구원|Impact load striking device, structure stability evaluation system having the same and structure stability evaluation method|
    CN112304196B|2020-10-23|2022-03-08|江苏恒一岩土工程技术有限公司|Drop hammer height measuring device for high strain detection|
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    法律状态:
    2015-05-11| PLFP| Fee payment|Year of fee payment: 2 |
    2016-01-08| PLSC| Search report ready|Effective date: 20160108 |
    2016-01-08| EXTE| Extension to a french territory|Extension state: PF |
    2016-07-15| PLFP| Fee payment|Year of fee payment: 3 |
    2017-08-25| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1456438A|FR3023374B1|2014-07-04|2014-07-04|HEAVY DYNAMIC PENETROMETER AND METHOD FOR DETERMINING THE FALLING HEIGHT OF A HAMMER BELONGING TO SUCH A PENETROMETER|FR1456438A| FR3023374B1|2014-07-04|2014-07-04|HEAVY DYNAMIC PENETROMETER AND METHOD FOR DETERMINING THE FALLING HEIGHT OF A HAMMER BELONGING TO SUCH A PENETROMETER|
    US14/748,549| US9719903B2|2014-07-04|2015-06-24|Heavy dynamic penetrometer and method for determining the fall height of a hammer belonging to such a penetrometer|
    CL2015001897A| CL2015001897A1|2014-07-04|2015-07-02|Heavy dynamic penetrometer and method to determine the height of fall of a hammer belonging to such a penetrometer|
    EP15175196.3A| EP2963184B1|2014-07-04|2015-07-03|Heavy dynamic penetrometer and method for determining the height of the fall of a hammer belonging to such a penetrometer|
    ES15175196.3T| ES2623769T3|2014-07-04|2015-07-03|Heavy dynamic penetrometer and procedure to determine the height of fall of a hammer belonging to said penetrometer|
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