• 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:
    The invention relates to a device for testing the stability of a mast (30) which is anchored upright in the ground, with a framework (1) which in side view has substantially the shape of a right-angled triangle, wherein the framework (1) comprises a traction means for bracing a lower part of the framework (1) against a foot of the mast (30) and a pressure medium (11) for introducing a force into the mast (30). The device should be improved so that it can also be operated easily and reliably when fixed obstacles are situated between the framework (1) and the mast (30) or a foot of the mast has a much greater circumference than the mast (30). The improvement is achieved in that an extension arm (9) is fastened with the lower end thereof to an upper end of the framework (1) in such a way that it can be pivoted in a plane parallel to a main surface of the framework (1) and can be secured in the pivoted position, and that the pressure means (11) is mounted on an upper end of the extension arm (9).
    公开号:AU2012372918A1
    申请号:U2012372918
    申请日:2012-03-14
    公开日:2014-08-28
    发明作者:Christa Reiners
    申请人:Christa Reiners；
    IPC主号:G01M5-00
    专利说明:
    1 Translation from German of PCT Application PCT/EP2012/054417 Device for testing the stability of a pole 5 The invention concerns a device for testing the stability of a pole, which is anchored upright in the ground, with a framework which, in side view, has substantially the form of a right-angled triangle, wherein the framework 10 comprises a tensioning means for bracing a lower part of the framework against a foot of the pole, and a pressure means for introducing a force onto the pole. Poles are utilised for many purposes, for example in the 15 public sector, in order to attach light fittings, traffic lights, signs and/or ropes to them. So that poles do not pose a danger to people and property they must be secure, that is, they must be stable and the material must have the required strength. The stability of poles must be 20 checked regularly so that possible weaknesses that may occur over time, such as corrosion or embrittlement, can be safely excluded. Devices and methods for testing the stability of a pole 25 are known per se. EP 638 794 B4 describes a small excavator with which a test load is applied to a pole. The resulting deflections of the pole are recorded. The excavator is expensive, 30 heavy and cumbersome to transport. It may even do damage to the site. 5632479_1 (GHMatters) P97612.AU NIOUSHAA 2 EP 1 416 259 A2 discloses a generic device for testing the stability of a pole, which comprises a framework with a triangular cross-section in side view. A pressure means is attached at an upper end of the framework to apply a 5 force onto the pole; moreover, a tensioning means for bracing a lower part of the framework against the foot of the pole is attached. DE 195 40 319 Cl discloses a generic device for testing 10 the stability of a pole, in which the base part extends approximately parallel to the ground. A pivoting arm is hinged on a first end of the base part in such a way that it extends upwards. A hydraulic cylinder is disposed diagonally between a section of the base part at the 15 second end and an upper section of the pivoting arm in such a way that the angle between the pivoting arm and the base part can be changed and a force can be applied onto the pole via the upper end of the pivoting arm. To achieve this, the second end of the base part can be 20 secured to the pole. The disadvantage of the known device is that it is not always easily possible to apply the force on the pole. This is the case, for example, if an unmoveable obstacle such as railing or a guardrail is in the way between the pole and the pivoting arm, or if the 25 pole has a significantly larger diameter at the base, which then causes a relatively large step to the remainder of the pole. This makes it impossible to move the pivoting arm into a position that a force can be applied since it impinges on the foot of the pole. 30 Makeshift measures are then required that may be risky. To detect the deflection of the pole caused by the applied force, various sensors are known to be used, such 5632479_1 (GHMatters) P97612.AU NIOUSHAA 3 as special cameras that capture a laser beam, or vibration sensors. The evaluation of data received from at least one sensor is performed by a computer and the respective software. 5 It is the object of the invention to provide a device for testing the stability of a pole, which makes testing simple without requiring any makeshift measures for such poles that cannot be accessed with the known device due 10 to an obstacle, or where the base diameter of the pole is much larger compared to the diameter of the actual pole body. The advantages of the generic device are to be retained. 15 Said object is met in that an extension arm is attached with its lower end to the upper end of the framework in such a way, that it is pivotable in a plane parallel to a main surface of the framework and that it can be locked in pivoted positions, and that the pressure means is 20 attached to the upper end of the extension arm. The length of the extension arm is designed such that it is not only able to apply the test load to the pole at the required height, but is also able to compensate for a distance between the framework and the pole. This makes 25 it possible to secure the framework against the foot of the pole in the usual manner; any obstacle such as a guardrail or railing can thus be bridged. This means that a suitably extended fixing strap is run around the foot of the pole and, if necessary, underneath or through the 30 obstacle. When tensioned, the framework is braced against the foot of the pole or the obstacle respectively. Any distance between the pole and the pressure means is bridged simply by pivoting the extension arm as required. 5632479_1 (GHMatters) P97612.AU NIOUSHAA 4 Temporary measures such as spacers are not required, which means that when testing is carried out on a bridge, nothing can drop down and cause a hazard below the bridge. The actual testing of the pole can take place in 5 the usual manner through applying a force (test load) to the pole and analysing the resulting deflection. Preparation for the test is significantly quicker since no temporary measures need to be placed to adapt the framework to the local conditions. 10 Any device is suitable as a pressure means that is able to apply the test force to the pole; so is any device as a tensioning means with which the framework can be tied against the pole. Preferred is the use of power 15 cylinders. The dependent claims concern the advantageous embodiment of the invention. 20 In one embodiment a power cylinder is provided with the extension arm for pivoting and locking. This provides not only infinite adjustment for bridging the distance between the pole and the pressure means, it also makes this adaptation easier and quicker. 25 In a further embodiment the pressure means is attached to the extension arm in such a manner that its height is adjustable. This allows for the best possible height adjustment for applying the force, depending on the type 30 of pole. In a further embodiment the force can be applied to the pole at two different levels. The test force is thus 5632479_1 (GHMatters) P97612.AU NIOUSHAA 5 split. To this end the pressure means is fitted with a beam construction, which points from the pressure means to the pole and is oriented parallel to said pole. This provides for the testing of poles that are made from 5 relatively pressure-sensitive material, and provides for the option of taking into account stepped changes in pole diameter and/or inhomogeneous sections such as flaps when testing. 10 In a further embodiment the device comprises sensors for determining the applied force and the deflection of the pole, as well as means for analysing the sensor signals. The stability criteria can thus be reliably determined. 15 In a further embodiment the chronological sequence of force and/or deflection can be recorded. Thus unusual reactions of the pole can be determined in a simple manner. 20 In a further embodiment the sensor for determining the deflection comprises at least one light source with a focused light beam and an electronic camera with a translucent screen, where the screen is mounted at a predetermined distance from the electronic camera. The 25 movements of the pole are thus detectable three dimensionally, and can be recorded and analysed with little effort. The measured values and the analysis are available immediately. If more than one light source is used and placed accordingly, the location of any weak 30 point in the pole can be determined, for example whether it is in the pole itself or in its foundation. This system has been very successful in practical application. 5632479_1 (GHMatters) P97612.AU NIOUSHAA 6 With respect to a bending force that changes in one direction, torsion between the lower and upper measuring point can be determined with the aid of the measuring system. A defective section, for example a rusted area or 5 a crack, is usually the cause for torsion of the pole. When torsion is measured above and below the defective section, and a corresponding defect is visible on the pole above ground level, the effect of this defect can be eliminated from the measuring result through relocating 10 the position of the light sources. If torsion is still detected after that between the measuring points, this is an indication of a hidden defect. Generally speaking it is normally sufficient to apply a 15 load only once to determine the stability. In a further embodiment, the sensor to determine the deflection comprises a vibration sensor. This is known as an alternative sensor. 20 In a further embodiment the tensioning means is fitted with a force measuring device. Through this movements of the pole in the ground can be detected. 25 The invention is further described in detail by way of the attached drawings. Shown are in: Figure 1 a perspective lateral view of a framework with extension arm, and 30 Figure 2 a device fitted with sensors on a pole. As is apparent from the figures, a device for testing the stability of a pole 30 comprises a framework 1, sensors 5632479_1 (GHMatters) P97612.AU NIOUSHAA 7 and means for analysis. The framework 1 comprises two solid, identical plates 2, which are connected parallel to each other using spacers 3. The plates 2 are essentially triangular, shaped as a right-angled, almost 5 equal-sided triangle; the acute angles formed with the hypotenuse are approximately 40 and 500. The plates 2 are provided with a number of cut-outs 4 of varying size to reduce the weight. The tips of the triangle formed with the hypotenuse are cut off perpendicular to the 10 sides. An extension 5 is formed in such a way in the area of the right angle of the triangle that, when framework 1 is in use, it points away from the triangle, approximately parallel to the ground as an extension of the lower side. 15 Framework 1 is supported on rollers 6 and is thus moveable. The axles of the rollers 6 are arranged such that the longer side of the triangle extends approximately parallel to the ground and the shorter side 20 points upwards. An extendable and retractable support 7 is attached at the end of the longer side, opposite the right angle. This can be used to compensate on the one hand for differences in height, such as can be caused by a kerb or sloping ground. On the other hand it removes 25 the load from the rollers 6 next to support 7 during testing, so that they are not damaged by the counter pressure to the test force. A first power cylinder 8 it attached in framework 1 30 parallel to the longer side. In conjunction with a fixing strap, said power cylinder 8 is designed to tie framework 1 in its lower section against a pole 30 to be tested. To 5632479_1 (GHMatters) P97612.AU NIOUSHAA 8 that end the first power cylinder 8 can be pressurised with a first manually operated pump. An extension arm 9 is pivotally supported between plates 5 2 at the upper end of the shorter side of framework 1, where a pivoting axle at the lower end of extension arm 9 is attached perpendicular to the main surfaces of plates 2. Said extension arm 9 is constructed from two parallel plates that are connected by spacers. The extension arm 9 10 is provided with a second power cylinder 10 as a pressure means to be able to pivot it. To achieve that, the second power cylinder 10 is pivotally attached to framework 1 with its first end and to extension arm 9 with its second end, and can be pressurised with a second manually 15 operated pump. A third power cylinder 11 is rigidly attached to an upper end of extension arm 9. Said power cylinder 11 is designed to apply a largely horizontally directed, or 20 better a slightly downwards directed, test force to pole 30. The third power cylinder 11 can be pressurised with a third manually operated pump. The three manually operated pumps are mounted on a 25 support arm that is attached to framework 1 in a foldable manner. Alternatively, only a single manually operated pump is provided, where the pressure generated with the manually operated pump is directed with a switchable multi-port valve to one of the power cylinders 8, 10, 11. 30 At least one sensor and means for analysing the sensor signals are provided with the device for testing the stability. 5632479_1 (GHMatters) P97612.AU NIOUSHAA 9 The sensor is, for example, an electronic camera 20 that is placed near the pole 30 to be tested. The camera 20 comprises a housing that contains a CCD image sensor and a screen. Two light sources 21 are mounted detachably on 5 the pole 30, each of which transmits a light beam with a point-shaped cross-section in operation. The light beams are directed at the screen, which is arranged, in beam direction, in front of the image sensor at a predetermined distance. 10 Further sensors are pressure sensors to determine the force applied by the first power cylinder 8 and the third power cylinder 11. The camera 20 and the pressure sensors can be connected to an analysing device, such as a PC in form of a laptop. 15 In addition it is possible to add another camera and/or a vibration sensor. In operation, framework 1 is pushed up to the pole 30 to 20 be tested. It is tied against pole 30 with its right angled end. For this purpose a first end of a fixing strap is hooked into a hook on a piston rod of the first power cylinder 8, the fixing strap is then placed around the base of pole 30, and a second end of the fixing strap 25 is hooked into the same or a further hook. As the first manual pump is operated, framework 1 is pulled against the pole 30 and secured with a predetermined pressure. If there is an obstacle between pole 30 and framework 1, such as railing or a guardrail, the framework is braced 30 against said obstacle; the fixing strap is still placed around the base of pole 30. In instances where the ground is slippery or muddy, the bracing prevents framework 1 from shifting with respect 5632479_1 (GHMatters) P97612.AU NIOUSHAA 10 to pole 30, particularly when starting to apply the test force. Thus the test can be carried out repeatibly, independent from weather or ground conditions; this is not always possible with other types of the testing 5 device. With the aid of the second power cylinder 10, operated by the second manual pump, the extension arm 9 is swivelled so far in the direction of pole 30 that a piston of the 10 third power cylinder 11 is just not touching, or only slightly touching the pole 30. The camera 20 is set up, light sources 21 are attached to pole 30, switched on and adjusted such that the light 15 beams point at the screen. The analysis device is booted up, and the sensors, that is, the camera 20 and the pressure sensors, are connected to it so that their signals can be measured and analysed. 20 To test the actual stability of the pole 30, the test force is applied in the usual manner by operating the third manual pump so that the piston of the third power cylinder 11 is pressed against pole 30. This bends and 25 deflects pole 30, which is recorded by the camera 20. The sensor signals are recorded and analysed. At the same time the pole is observed visually for any unusual movement. The stability of pole 30 is graded based on the result of the analysis and the observation. 30 5632479_1 (GHMatters) P97612.AU NIOUSHAA 11 List of reference numbers 1 Framework 2 Plate 5 3 Spacer 4 Cut-out 5 Extension 6 Roller 7 Support 10 8 First power cylinder 9 Extension arm 10 Second power cylinder 11 Third power cylinder 20 Camera 15 21 Light source 30 Pole 5632479_1 (GHMatters) P97612.AU NIOUSHAA
    权利要求:
    Claims (10)
    [1] 1. Device for testing the stability of a pole (30), which is anchored upright in the ground, with a 5 framework (1) which, in side view, has substantially the form of a right-angled triangle, wherein the framework (1) comprises a tensioning means (8) for bracing a lower part of the framework (1) against a foot of the pole (30), and a pressure means (11) for 10 introducing a force onto the pole (30), characterised in that an extension arm (9) is attached with its lower end to the upper end of the framework (1) in such a way, that it is pivotable in a plane parallel to a main surface of the framework 15 and that it can be locked in pivoted positions, and that the pressure means (11) is attached to the upper end of the extension arm (1) [sic].
    [2] 2. Device according to claim 1, characterised in that a power cylinder (10) is provided with the extension 20 arm (8) [sic] for pivoting and locking.
    [3] 3. Device according to claim 1 or 2, characterised in that the pressure means (11) is attached to the extension arm (1) [sic] in such a manner that its height is adjustable. 25
    [4] 4. Device according to claim 1 to 3, characterised in that the force can be applied to the pole (30) at two different levels.
    [5] 5. Device according to claim 1 to 4, characterised in that it comprises a sensor for determining the 30 applied force and at least one sensor (20) for determining the deflection of the pole (30), as well as means for analysing the sensor signals. 5632479_1 (GHMatters) P97612.AU NIOUSHAA 13
    [6] 6. Device according to claim 5, characterised in that the chronological sequence of force and/or deflection can be recorded.
    [7] 7. Device according to claim 5 or 6, characterised in 5 that the sensor for determining the deflection comprises an electronic camera (20) with a translucent screen, onto which at least one light source (21) is directed with a focused light beam and, where the screen is mounted at a predetermined 10 distance from an image sensor.
    [8] 8. Device according to claim 7, characterised in that two light sources (21), which are attached to the pole (30) at different levels, are pointed at the camera (20). 15
    [9] 9. Device according to claim 5 to 8, characterised in that the sensor for measuring the deflection comprises a vibration sensor.
    [10] 10. Device according to claim 1 to 9, characterised in that the tensioning means (8) is provided with a 20 force measuring device. 5632479_1 (GHMatters) P97612.AU NIOUSHAA
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    同族专利:
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    AU2012372918B2|2014-11-13|
    WO2013135276A1|2013-09-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DK0638794T3|1993-08-14|1999-02-22|Mathias Roch|Method and device for testing the stability and bending strength of masts|
    DE19540319C1|1995-10-28|1997-04-03|Christa Reiners|Test equipment for rigidity of mast anchored into ground|
    DE10251129A1|2002-11-02|2004-05-19|Christa Reiners|Method for checking the stability of a mast|DE102016110580B3|2016-06-08|2017-10-05|Marcel Brüster|Method for testing the stability of a mast and associated device|
    CN108061687B|2017-12-06|2020-02-14|中南大学|Geotechnical engineering simulation test platform for researching potential failure surface|
    法律状态:
    2015-03-12| FGA| Letters patent sealed or granted (standard patent)|
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/EP2012/054417|WO2013135276A1|2012-03-14|2012-03-14|Device for testing the stability of a mast|
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