• 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:
    Device for measuring the tension of cables of lifting devices, comprising a set of sensor bodies (1) each of which is configured to measure the voltage of a respective cable (2) of the lifting device, the set of sensor bodies being arranged (1) on a common transverse support (6) with respect to which the sensor bodies (1) are laterally displaceable to align with a cable (2) of the lifting device, each sensor body (1) incorporating an upper support (3) and a lower support (4), projecting towards the exterior of the sensor body (1), and between which a cable (2) of the lifting device is supported, and because opposite the transverse support (6) a bar (8) is arranged. For the tensioning of the cables (2), the cables (2) being supported between the upper (3) and lower (4) supports and tensioned by the bar (8) in an intermediate zone between the upper (3) and lower supports (4). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2552853A1
    申请号:ES201530710
    申请日:2015-05-22
    公开日:2015-12-02
    发明作者:Javier Muñoz Ochovo
    申请人:Lift Sensor S L；Lift Sensor Sl；
    IPC主号:
    专利说明:

    MEASUREMENT DEVICE FOR THE TENSION OF CABLES OF LIFTING EQUIPMENT
    5 Technical sector
    The present invention is related to the control of the tension of cables subjected to traction, such as those of suspension of elevators and similar lifting systems, proposing for this purpose a measuring device that allows controlling of
    10 individually the tension of each cable of the lifting system, to provide data based on which the corresponding lifting system can be adjusted and establish safety conditions therein.
    State of the art
    15 In the installations of lifting devices, such as elevators or forklifts, the provision of measuring instruments for the control of the load to be lifted is essential, in order to avoid breakdowns and accidents due to overloads.
    20 In this regard, solutions are known that allow the voltage directly created by the loads to which they are subjected to be measured directly on the cables. Patents ES2168163 and ES2190767, of the same holder as the present invention, disclose measurement systems that allow joint control of the tension of all the cables of a hoisting apparatus, but do not allow establishing an individual control of the
    25 cables, which limits the utility of the application, since they do not provide the necessary data to make corrections in the installation of the cables in order to adjust the individual load voltage of all of them in an equivalent way, and on the other hand, This solution also limits the possibilities of the application when the cables are very far apart.
    On the other hand, Utility Models ES1055746U and ES1069860U, also of the same applicant of the present invention, disclose measurement systems that allow the individual tension of a cable of a hoisting device to be controlled. However, these solutions are not optimal in cases where the lifting device has
    35 several cables, and it is required to control the load voltage of all of them. In this case, the installation of individual sensors for each cable is complicated, since the installer -2


    a measuring device must be individually arranged for each cable, which considerably increases the installation time. In addition, due to the existing space restrictions in this type of installation, and mainly in installations where the cables are very close to each other, it is not possible to arrange all measuring devices at the same height, that is, parallel to each other, which forces the installer to arrange each measuring device on its corresponding cable at different heights, thus increasing the installation time to a greater extent.
    It is therefore necessary a device for measuring the tension of the cables of lifting devices that is easy to install and that allows to individually control each of the cables of a lifting device.
    Object of the invention
    The present invention proposes a device for measuring the tension of cables of lifting devices that allows to individually control the tension of all cables of the lifting device, guaranteeing optimum safety conditions of the installation. Likewise, a versatile device is obtained that can be adapted to lifting devices with different number of cables, or different separation distances between cables.
    The cable tension measuring device of lifting devices of the invention comprises a set of sensor bodies, each of which is configured to measure the voltage of a respective cable of the lifting device, the set of sensor bodies being arranged on a support transverse common to all of them and with respect to which the sensor bodies can move laterally to align with a respective cable of the lifting apparatus. In this way, the measuring device makes it possible to independently control the tension of each cable, and by placing the sensor bodies on a common transverse support, the sensor bodies can be adapted to installations with different distances between cables.
    Each sensor body incorporates an upper support and a lower support, projected towards the outside of the sensor body, and between which a cable of the lifting device is arranged, and facing the transverse support is a bar for tensioning the cables, of so that under conditions of use of the measuring device, the cables are supported between the upper and lower supports of the sensor bodies, and are tensioned by the bar in an intermediate zone between the upper and lower supports.


    Each sensor body has a rectangular prismatic shape with a front face and a rear face joined by side faces, the front and rear faces having a width corresponding to the diameter of a cable of the lifting device, so that when the sensor bodies have a width Similar to the diameter of the cables, the measuring device can be applied to lifting devices where the cables are very close to each other, thus facilitating the installation by the operator.
    The upper support and the lower support of the sensor bodies have a concave and reciprocal shape to the circular shape of the cables, so that in conditions of use of the measuring device a lateral retention of the cables is established, thus improving the measurement of the tension.
    Additionally, it is provided that each sensor body incorporates, between the upper support and the lower support, an intermediate support that also has a reciprocal concave shape to the circular shape of the cables, so that said intermediate support also guarantees a lateral retention of the cables.
    The sensor bodies have an opening that is equidistant from the upper and lower supports, where the transverse support is introduced, so that when the measuring device is located between the cables of the lifting device, the tension of the cables causes The device is aligned with respect to the cables without the possibility of tilting.
    The sensor bodies have housings where sensors adapted to measure the variation of the tension in the cables are located. The sensors are expected to be flexi strain gauges. In relation to said housings where the sensors are located, the sensor bodies have grooves that facilitate the flexion of the sensor body through said area, guaranteeing a more efficient detection of any variation in the cable tension.
    The cable tensioning bar is fastened with respect to the transverse support by means of screws that are arranged at the ends of the transverse support, with interchangeable washers arranged on the screws between the bar and the transverse support. Thus, by using washers of different lengths, the distance between the bar and the sensor bodies can be regulated, allowing the measuring device to adapt to cables of different diameters.


    With all of this, a device for measuring the tension of cables of lifting devices is obtained which, due to its constructive and functional characteristics, is of preferential application for the function to which it is intended, allowing to individually control the voltage of all cables of the lifting device, and allowing to facilitate the
    5 installation to the operator by allowing its adaptation to lifting devices with different numbersof cables, or different separation distances between cables.
    Description of the figures
    10 Figure 1 shows a perspective view of an embodiment of the cable tension measuring device of lifting devices of the invention, configured for a four-wire lifting device.
    Figure 2 shows a side view of the measuring device of the previous figure.
    15 Figure 2A shows a side view of one of the sensor bodies of the measuring device.
    Figure 3 shows a front view of the measuring device of Figure 1.
    20 Figure 4 shows a perspective view of another embodiment of the device for measuring the cable tension of lifting devices, configured for an eight-wire lifting device.
    25 Figure 5 shows a side perspective view of the measuring device of the previous figure.
    Detailed description of the invention
    The measuring device of the present invention comprises a set of sensor bodies (1) configured to measure the tension of the cables (2) of a lifting device, wherein each of said sensor bodies (1) is adapted to receive a cable (2) of the lifting device and thus individually control the voltage of each cable (2).
    35 In the exemplary embodiment of Figure 1, a measuring device with four sensor bodies (1) is configured to be used in a lifting device of -5


    four cables (2), for reasons of clarity in said figure the cables have not been shown
    (2) of the installation. In the exemplary embodiment of Figure 4, a measuring device with eight sensor bodies (1) is configured to be used in an eight-wire lifting device (2). In this way, by adding or removing sensor bodies (1), the measuring device can be adapted to lifting devices with different numbers of cables (2).
    The sensor bodies (1) of the measuring device have a rectangular prismatic configuration, where each sensor body (1) has a front face (1.1) and a rear face (1.2) that are joined together by side faces (1.3 ), the front (1.1) and rear (1.2) faces having a width smaller than the width of the side faces (1.3).
    Each sensor body (1) incorporates an upper support (3) and a lower support (4) in relation to the upper and lower ends of its front face (1.1), projecting said upper (3) and lower (4) supports towards the exterior of said front face (1.1), so that the cables (2) of the lifting device are supported between said upper (3) and lower (4) supports of the sensor body (1).
    Additionally, each sensor body (1) incorporates an intermediate support (5) that also projects outwardly from said front face (1.1) and that is equidistant from the upper support (3) and the lower support (4).
    The upper (3), lower (4), and intermediate (5) supports of the sensor body are provided
    (1) they are reciprocally concave seats to the circular shape of the cables (2), so that proper positioning of the cables (2) on the supports (3, 4, 5) of the sensor bodies ( 1), ensuring at all times that there are no lateral displacements that may hinder the measurement of the tension of the cables (2).
    The sensor bodies (1) of the measuring device are arranged parallel to each other, the sensor bodies (1) being faced by their lateral faces (1.3). It is envisioned that the width of the sensor bodies (1), that is to say the width of its front (1.1) and rear (1.2) faces, is substantially identical to the diameter of a cable (2) of the lifting apparatus. With this configuration, the sensor bodies (1) can be arranged close to each other to adapt to lifting devices with different numbers of cables (2), thus optimizing the space occupied by the measuring device, which is advantageous in this type of installation in Where space is reduced.


    The set of sensor bodies (1) are mounted on a common transverse support (6) in the form of a cylindrical bar that is arranged perpendicular to the direction of the cables (2) of the lifting apparatus. To do this, each sensor body (1) has an opening (7) in the middle of its lateral faces (1.3), at an equidistant distance between the upper support (3) and the lower support (4). Insert the cross support (6). With this arrangement, as many sensor bodies (1) as cables (2) can be installed on the transverse support (6). Likewise, the sensor bodies (1) can move laterally on the transverse support (6) so that the measuring device can adapt to installations with different distances between cables (2), each sensor body (1) being aligned with its respective cable ( 2) to control.
    Faced with the transverse support (6), the measuring device incorporates a bar (8) for tensioning the cables (2). The bar (8) is fastened with respect to the transverse support (6) by means of screws (9) that are arranged at the ends of said transverse support (6) projected outwards. On the screws (9), in the area defined between the bar (8) and the transverse support (6), interchangeable washers (10) are included that determine a separation between the sensor bodies (1) and said bar (8) for tensioning cables. In this way, by using washers (10) of different lengths, the distance between the bar (8) and the sensor bodies (1) can be adjusted, allowing the measuring device to adapt to cables (2) of different diameters .
    With all this, the measuring device in conditions of use is applicable with respect to the cables (2) supporting a lifting device as shown in figures 2, 4 and 5. Thus, for the assembly of the device As measured on the cables (2) of an installation, first of all as many sensor bodies (1) as cables (2) are selected to be controlled in the installation, and the sensor bodies (1) are arranged in the transverse support (6) selecting a lateral separation between them that corresponds to the lateral separation between the cables (2), therefore each cable (2) being aligned with its respective sensor body (1). Then the cables (2) are arranged making contact with the upper (3) and lower (4) supports of the sensor bodies (1), and washers (9) are arranged on the screws (10) corresponding to the diameter of the cables (2) of the installation.
    Subsequently, the bar (8) is arranged on the cables (2), so that the screws (9) are tightened until the bar (8) is tightened against the washers (10), and these against the transverse support (6) , thus establishing a curvature of the cables (2),


    as shown in detail in the side view of figures 2 and 5. Thus, the cables (2) are tensioned, each cable (2) contacting its rear part with the upper support (3) and the lower support (4) of a sensor body (1), and at the front with the bar (8). Likewise, each cable (2) is retained laterally by the concave shape of the upper (3), lower (4) and intermediate (5) supports of the sensor bodies (1).
    As can be seen in Figure 2A, the upper (3) and lower (4) supports project outwards from the front face (1.1) of the sensor body (1) at an identical distance, while the intermediate support (5) projects outwards from the front face at a distance shorter than the one projected by the upper (3) and lower (4) supports. This arrangement of the intermediate support (5) allows that when the bar (8) is arranged on the cables
    (2) these acquire a curved arrangement and are properly tensioned.
    In the lateral faces (1.3) of the sensor bodies (1), in an upper and lower position with respect to the opening (7), there are housings (11) where sensors (12) that measure the variation of the tension in the cables (2). The sensors (12) are pressure sensors, such as flexi strain gauges that are attached to the inner wall of the housings (11). It is envisioned that the sensors (12) are arranged in the lower housing (11) which is close to data transmission cables (13), although the sensors (12) could be located in the upper housing (11) or in both. The accommodations
    (eleven) of the sensor bodies (1) are closed by means of covers (14).
    The sensor bodies (1) have on their front (1.1) and rear faces (1.2), in relation to the housings (11), semicircular grooves (15) that define a weakening zone of the sensor body (1) for favor its flexion through said area, and allow a better measurement of the tension of the cables (2). In this way, when the cables (2) are supporting the load of the lifting apparatus, they are subjected to traction, and the sensor bodies (1) are slightly deformed at the height of said grooves (15), however, when some cable (2) loses tension, the sensors (12) detect that variation, and being precisely located in relation to the grooves (15), a more efficient detection of any variation in the tension of the cables (2) is guaranteed.

    权利要求:
    Claims (3)
    [1]
    1.-Device for measuring the tension of cables of lifting devices, characterized in that it comprises a set of sensor bodies (1) each of which is configured to measure the voltage of a respective cable (2) of the lifting device, provided the set of sensor bodies (1) on a common transverse support (6) with respect to which the sensor bodies (1) are laterally movable to align with a cable (2) of the lifting apparatus, each sensor body (1) incorporating an upper support
    (3) and a lower support (4), which project towards the outside of the sensor body (1), and between
    10 which is provided supported by a cable (2) of the lifting apparatus, and because in front of the transverse support (6) there is a bar (8) for tensioning the cables (2), the cables (2) being supported between the supports upper (3) and lower (4) and tensioned by the bar
    (8) in an intermediate zone between the upper (3) and lower (4) supports.
    2. Device for measuring the tension of cables of lifting devices, according to claim 1, characterized in that each sensor body (1) has a rectangular prismatic shape with a front face (1.1) and a rear face (1.2) joined by side faces (1.3), the front (1.1) and rear (1.2) faces having a width corresponding to the diameter of a cable (2).
    3. Device for measuring the tension of cables of lifting devices, according to any one of the preceding claims, characterized in that the upper support (3) and the lower support (4), have a concave shape, reciprocal to the form of the cables (2), to establish a lateral retention of the cables (2).
    4. Device for measuring the tension of cables of lifting devices, according to any one of the preceding claims, characterized in that additionally each sensor body (1) incorporates, between the upper support (3) and the lower support (4), an intermediate support (5) with a concave reciprocal shape to the shape of the cables (2).
    30 5. Device for measuring the tension of cables of lifting devices, according to any one of the preceding claims, characterized in that the sensor bodies (1) have an opening (7), which is equidistant from the upper supports
    (3) and lower (4), where the transverse support (6) is introduced. 35

    [6]
    6. Device for measuring the tension of cables of lifting devices, according to any one of the preceding claims, characterized in that the sensor bodies (1) have housings (11) where sensors (12) are housed that measure the variation of the tension in the cables (2).
    [7]
    7. Device for measuring the tension of cables of lifting devices, according to claim 6, characterized in that in relation to the housings (11) where the sensors (12) are located, the sensor bodies (1) have grooves ( 15) to facilitate flexion of the sensor body (1).
    10. Device for measuring the tension of cables of lifting devices, according to claim 6 or 7, characterized in that the sensors (12) are flexi strain gauges.
    15. Device for measuring the tension of cables of lifting devices, according to any one of the preceding claims, characterized in that the bar (8) is secured with respect to the transverse support (6) by means of screws (9) that are arranged in the ends of the transverse support (6).
    10. Device for measuring the tension of cables of lifting devices, according to the preceding claim, characterized in that on the screws (9), between the bar (8) and the transverse support (6), washers (10 ) interchangeable.

    DRAWINGS



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    WO2016189178A1|2016-12-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0986828A|1995-09-29|1997-03-31|Mitsubishi Denki Bill Techno Service Kk|Rope tension measuring device for elevator|
    ES2150364A1|1998-06-22|2000-11-16|Micelect S L|Hanging mass measuring instrument for machines that work with traction cables|
    ES2168163A1|1998-07-08|2002-06-01|Micelect S L|Instrument of direct measurement of hanging masses for machines that operate with traction cables|
    US20050028612A1|2002-01-23|2005-02-10|Javier Munoz Ochovo|Instrument for measuring suspended masses for machines that operate with traction cables|
    ES1055746U|2003-10-13|2004-01-01|Micelect S L|Sensor cable tensile stresses. |
    ES1069860U|2009-03-10|2009-05-18|Micelect, S.L|Sensor for the control of cable tension |
    EP2687834A1|2012-07-18|2014-01-22|S2Tech S.r.l.|Measuring instrumentand method for measuring an applied force|
    ES2461818A2|2012-11-20|2014-05-21|Dinacell Electronica S.L.|Load cell for elevator cables. |
    EP3578494A1|2018-06-06|2019-12-11|Inventio AG|Lift facility and method for monitoring the belt condition|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201530710A|ES2552853B1|2015-05-22|2015-05-22|Device for measuring the tension of cables of lifting devices|ES201530710A| ES2552853B1|2015-05-22|2015-05-22|Device for measuring the tension of cables of lifting devices|
    PCT/ES2016/070375| WO2016189178A1|2015-05-22|2016-05-18|Device for measuring the tension of cables of lifting equipment|
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