• 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:
    Mechanism limiting the load of a crane (1) in a boat, where the crane (1) comprises an arm (2) with hydraulic extensions (3) and a spin column (4) attached to the boat, with at least one lifting cylinder (8) associated with the arm (2), comprising a limit switch (7) which, when the arm (2) of the crane (1) enters into two lateral angular spaces (17) activates a second limiter , and a pressure sensor (9) that measures the pressure that the at least one lifting cylinder (8) supports, such that with the end of stroke (7) activating the second limiter and the pressure sensor (9) by measuring a pressure greater than a threshold, the arm (2) has limited movement to pick up the hydraulic extensions (3). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2690882A2
    申请号:ES201830299
    申请日:2018-03-27
    公开日:2018-11-22
    发明作者:Jose RODRIGUEZ LAREO；Carlos COSTOYA VARELA；Manuel FERNANDEZ ABELEDO
    申请人:Ind Guerra S A；INDUSTRIAS GUERRA SA；
    IPC主号:
    专利说明:

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    LIMITING MECHANISM OF THE LOAD OF A CRANE ON A BOAT
    DESCRIPTION
    Object of the invention
    The present invention relates to a mechanism that limits the load of a crane on a fishing vessel that improves the load capacity by crane of the vessel as a whole by limiting the overload in a relative position of the crane with respect to the crane. vessel in which the vessel is less stable and maintains maximum load capacity in a relative position of the crane relative to the vessel in which the vessel is more stable. The mechanism limiting the load of a crane on a vessel object of the invention is applicable in the field of vessels that lift loads from different positions, specifically for vessels engaged in fishing.
    Technical problem to solve and background of the invention
    Vessels that have a crane located on deck have different load capacity depending on the relative position in which the crane is operating, since the boat as it loads in one position or another suffers an inclination that in some positions limits said capacity of load.
    Thus, if the crane arm is in longitudinal position to the vessel, the lifting capacity of the crane is maximum, because the vessel does not suffer any lateral inclination, however when the arm is positioned perpendicular to the longitudinal axis of the vessel , the crane lifting capacity is minimal because the inclination suffered by the boat is maximum.
    The maximum inclination allowed by a vessel is defined by the Stability Criteria required by the General Directorate of the Merchant Marine, which indicates that the maximum heel of the vessel generated by the crane must not exceed 10 ° or the immersion angle of the tramway, If this is minor.
    Therefore, with a traditional crane, in which the lifting moment is constant, the permissible load on deck and the permissible load on the hopper is limited by being limited by the maximum moment generated by the crane in the unfavorable position. Also if
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    it limits the lifting moment to the maximum moment generated by the crane in the unfavorable position, all the operability of the crane is limited without taking into account that the working position of the crane can be in more favorable conditions of stability of the boat, which is an unnecessary limitation for crane work.
    Description of the invention
    The invention described discloses a mechanism limiting the load of a crane on a vessel, which controls the moment of heel generated by the crane based on the working angle of the crane with respect to the longitudinal axis of the vessel.
    With this mechanism it is possible to maintain the moment of lifting the load in those positions in which greater lifting capacity is demanded, which is on the boat's own deck and prevent the boat from suffering an accident due to a load that is too high in positions. where the stability of the boat is lower.
    The crane where the load limiting mechanism object of the invention is located comprises an arm with hydraulic extensions and a turning column attached to the vessel, with at least one lifting cylinder associated with the arm.
    The mechanism limiting the load of a crane on a boat, comprises a limit switch which, when the crane arm enters two lateral angular spaces activates a second limiter and a pressure sensor that measures the pressure that supports the minus a lifting cylinder, such that with the limit switch activating the second limiter and the pressure sensor measuring a pressure greater than a threshold, the arm has limited movement to collect the hydraulic extensions.
    The load-limiting mechanism of a crane in a vessel object of the invention comprises two angular parts fixed to a crane support, such that each angular piece surrounds the crane support at an angle that corresponds to a lateral angular space, the angular pieces being configured so that a wheel of the electric limit switch contacts the angular pieces and activates the second limiter.
    The mechanism limiting the load of a crane on a vessel object of the invention, in another embodiment, also comprises the two angular parts fixed to a crane support, but in this second embodiment it is an inductive end of stroke sensor which it is activated when placed on the angular pieces, so that said inductive sensor activates the
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    second limiter
    In the mechanism limiting the load of a crane on a vessel subject to the
    invention the angular pieces are fixed to the crane support by means of two supports
    base.
    In the mechanism limiting the load of a crane on a vessel subject to the
    invention the limit switch is fixed on a support piece which in turn is fixed
    on the column of rotation of the crane, so that the limit switch rotates in solidarity with the column of rotation of the crane.
    The mechanism limiting the load of a crane on a vessel object of the invention comprises a cover covering the limit switch assembly.
    Description of the figures
    In order to complete the description and in order to help a better understanding of the characteristics of the mechanism object of the invention, this descriptive report is attached, as an integral part thereof, a set of drawings where with an illustrative and non-limiting nature, The following has been represented:
    Figure 1 shows a perspective view of a complete crane incorporating the mechanism object of the invention.
    Figure 2 shows a perspective view of the first embodiment of the mechanism object of the invention in a crane in which the arm has been removed.
    Figure 3 shows a perspective view of the first embodiment of the mechanism object of the invention in a crane without showing the hydraulic extensions thereof.
    Figure 4 shows an exploded perspective view of the angular pieces where the wheel of the limit switch of the first embodiment of the mechanism object of the invention contacts.
    Figure 5 shows an exploded perspective view of the limit switch of the first embodiment of the mechanism object of the invention.
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    Figure 6 shows a perspective view of the limit switch of the first embodiment of the mechanism object of the invention.
    Figure 7 shows a perspective view of the limit switch of the second embodiment of the mechanism object of the invention.
    Figure 8 shows a plan view of a vessel with the angular spaces in which the crane operates marked.
    The different numerical references that are reflected in the figures correspond to the following elements:
    1. - crane,
    2. - arm,
    3. - hydraulic extensions,
    4. - turning column,
    5. - support,
    6. - turning cylinders,
    7. - end of career,
    8. - lifting cylinder,
    9. - pressure sensor,
    10.-angular part,
    11.-base brackets,
    12. -not used,
    13. -proceed,
    14. -piece support,
    15.-inductive sensor,
    16. -cap,
    17. - lateral angular space,
    18. -stern aft space, and
    19.-angular bow space.
    Preferred Embodiment of the Invention
    As already indicated, and as can be seen in the figures, the object of the invention is a mechanism limiting the load of a crane on a vessel, which limits the movements that the crane (1) can do when it is operating on the vessel depending on the relative position of the crane arm (2) (1) with respect to its own
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    boat
    Before describing the mechanism object of the invention, it is important to emphasize that the arm (2) of the crane (1) on which the load limiting mechanism object of the invention operates is formed by a plurality of hydraulic extensions ( 3) that extend into each other to obtain a greater range, which are supported on a turning column (4) that is fixed to the hull of the boat by means of a support (5), such that the turning column (4) The crane (1) has fixed rotation cylinders (6) that facilitate the rotation of the rotation column (4), in addition the crane (1) has lifting cylinders (8) that are responsible for lifting the arm ( 2) of the crane (1).
    The mechanism object of the invention comprises two load limiters, a first load limiter for normal working conditions and a second load limiter, which regulates the load based on the lateral stability of the vessel.
    The second load limiter comes into action when the arm (2) of the crane (1) is placed in a position where the vessel is subjected to an effort that causes the
    boat tilt an angle that may compromise its stability, that is the
    When I return from the boat I would make the aforementioned boat, if it persists operating in that position, tip over.
    Thus, the mechanism object of the invention acts according to the relative position of the crane (1) with respect to the vessel. The 360 ° of the complete rotation that the crane can rotate (1) has been divided into angular spaces (see FIG. 8), said angular spaces are two lateral angular spaces (17) (of 120 ° in the preferred embodiment and corresponding with the sides of the boat), an aft angular space (18) (60 ° in the preferred embodiment) and an angular bow space (19) (60 ° in the preferred embodiment), so that if the arm (2) of the crane (1) is located in any stern angular space (18) or in the bow angular space (19), the second limiter is deactivated and therefore the load capacity of the crane (1) is not is reduced, and if the arm (2) of the crane (1) is placed in some
    lateral angular space (17), the second limiter is activated and the capacity of the crane (1) is
    limits according to the maximum inclination that the boat is capable of supporting.
    The values of the angles covered by the angular spaces (17, 18, 19) are not fixed but are determined by the stability criteria of the vessel, so they may have any value that is extracted from a study of the stability of the vessel.
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    boat
    For the activation of the second limiter, the mechanism object of the invention comprises a limit switch, which can be electric (7) or inductive (15), which is activated when the arm (2) of the crane (1) is placed in the lateral angular spaces (17), and is deactivated when the arm (2) of the crane (1) leaves the lateral angular spaces (17), so that, with the arm (2) of the crane (1) in transverse positions to the boat, the second limiter of the mechanism is activated.
    In addition to the limit switch (7, 15), the mechanism object of the invention has a pressure sensor (9) that measures the pressure that the lifting cylinders (8) bear to know the load that the crane is carrying (1 ), so that: if the pressure sensor (9) detects a value that exceeds a threshold, the threshold being associated with a load that generates a vessel tipping moment, if the crane arm (2) (1) ) It is extended and is located in one of the lateral angular spaces (17), the second limiter is activated and, as already stated in this report, the only movement that allows the crane (1) is to collect the extensions hydraulic (3) to reduce the moment of overturning on the boat.
    The threshold value associated with a load that generates a boat tipping moment is different for each boat since it depends on multiple factors of the boat itself, so these values are obtained from the study of the stability of the boat that also limits the values of the angles covered by the angular spaces.
    The mechanism object of the invention comprises two angular pieces (10) fixed to the support (5) of the crane, each angular piece (10) has the shape of a circular sector and extends around the support (5) of the crane (1). 119 ° corresponding to the area where the crane has to have a limited load capacity. The angular pieces (10) are fixed to the support (5) of the crane (1) by means of two base supports (11).
    In a first embodiment of the invention, for the activation of the limit switch (7) and consequently of the second limiter, the limit switch itself (7) has a wheel (13), which when the crane arm (2) (1) the angular spaces corresponding to the sides of the boat are moved, the wheel (13) contacts an angular piece (10). The limit switch (7) is fixed on a support piece (14) which in turn goes
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    fixed on the turning column (4) of the crane (1), so that the limit switch (7) rotates in solidarity with the rotating column (4) of the crane (1).
    There is a second embodiment of the mechanism object of the invention, which comprises an inductive limit switch comprising an inductive sensor (15) and the two angular parts (10) that in this embodiment have to be metallic, so that when the inductive sensor (15) it is positioned on one of the angular pieces (10) the limit switch is activated and with that limit switch the second limiter. This second embodiment of the mechanism for limiting the load of a crane on a vessel offers the same technical characteristics of the crane's operation (1) according to the relative position of the crane (1).
    The entire limit switch assembly (7.15) is protected with a cover (16) so that manipulation of the system object of the invention is prevented.
    By means of the system object of the invention, it is possible to install cranes (1) with greater load capacity than those currently installed, since the load capacity on the deck of the boat is greater because the crane (1) that is It can be mounted is of greater capacity, with the limitation offered by the system object of the invention when the crane of greater capacity operates in positions where the stability of the vessel is lower.
    The invention should not be limited to the two embodiments described herein. Experts in the field can develop other embodiments in view of the description made here. Accordingly, the scope of the invention is defined by the following claims.
    权利要求:
    Claims (6)
    [1]
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    1. - Mechanism limiting the loading of a crane (1) of a vessel, where the crane (1) comprises an arm (2) with hydraulic extensions (3) and a turning column (4) attached to the vessel, with at least one lifting cylinder (8) associated with the arm (2), characterized in that it comprises:
    - a limit switch (7.15) which, when the crane arm (2) (1) enters two lateral angular spaces (17) activates a second limiter, and
    - a pressure sensor (9) that measures the pressure that supports the at least one lifting cylinder (8),
    such that with the limit switch (7.15) activating the second limiter and the pressure sensor (9) measuring a pressure greater than a threshold, the arm (2) has limited its movement to collect the hydraulic extensions (3).
    [2]
    2. - Mechanism limiting the load of a crane (1) of a vessel according to claim 1 characterized in that it comprises two angular parts (10) fixed to a support (5) of the crane (1), such that each angular piece (10) the crane support (5) surrounds an angle that corresponds to a lateral angular space (17), the angular parts (10) being configured so that a wheel (13) of the limit switch (7) contacts the angular pieces (10) and activate the second limiter.
    [3]
    3. - Mechanism limiting the load of a crane (1) of a vessel according to claim 1 characterized in that it comprises two angular parts (10) fixed to a support (5) of the crane (1), such that each angular piece (10) the crane support (5) surrounds an angle that corresponds to a lateral angular space (17), the angular parts (10) being configured so that an inductive sensor (15) of the limit switch is activated when positioned on the angular pieces (10) and activate the second limiter.
    [4]
    4. - Mechanism limiting the load of a crane (1) of a vessel according to any of claims 2 or 3 characterized in that the angular parts (10) are fixed to the support (5) of the crane (1) by two supports base (11).
    [5]
    5. - Mechanism limiting the load of a crane (1) of a vessel according to any of the preceding claims characterized in that the limit switch (7.15) is fixed on a support piece (14) which in turn is fixed on the turning column (4) of the
    crane (1), so that the limit switch (7.15) rotates in solidarity with the turning column (4) of the crane (1).
    [6]
    6.-Mechanism limiting the load of a crane (1) of a vessel according to any one of the preceding claims characterized in that it comprises a cover (16) covering the end-of-stroke assembly (7.15).
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    同族专利:
    公开号 | 公开日
    ES2690882B2|2019-12-19|
    ES2684572A1|2018-10-03|
    ES2690882R1|2018-12-14|
    ES2684572B1|2019-07-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2933861C2|1979-08-21|1983-02-03|Siemens AG, 1000 Berlin und 8000 München|Speed control for slewing gear or hoisting gear drives of a transport device, in particular a ship's crane|
    JPS5856948A|1981-09-30|1983-04-04|Shin Meiwa Ind Co Ltd|Anti-overload safety device for crane|
    JP2798355B2|1994-04-20|1998-09-17|古河機械金属株式会社|Crane overload prevention device|
    EP0708053A1|1994-08-26|1996-04-24|Hiab Export A/S|Overload protection system for hydraulic boom cranes, especially of the type used on motor vehicles|
    JP3310791B2|1994-09-13|2002-08-05|株式会社加藤製作所|Mobile crane braking system|
    US5908122A|1996-02-29|1999-06-01|Sandia Corporation|Sway control method and system for rotary cranes|
    DE19983149B3|1998-04-22|2014-12-04|Hoejbjerg Maskinfabrik A/S|Method for operating a slewing crane|
    US6505574B1|2001-09-05|2003-01-14|The United States Of America As Represented By The Secretary Of The Navy|Vertical motion compensation for a crane's load|
    US7367464B1|2007-01-30|2008-05-06|The United States Of America As Represented By The Secretary Of The Navy|Pendulation control system with active rider block tagline system for shipboard cranes|
    CN201647861U|2009-09-14|2010-11-24|徐州工程学院|Anti-overturning device for lorry-mounted crane|
    US9688490B2|2013-02-05|2017-06-27|Barge Master Ip B.V.|Motion compensation device and method for transferring a load|
    法律状态:
    2018-11-22| BA2A| Patent application published|Ref document number: 2690882 Country of ref document: ES Kind code of ref document: A2 Effective date: 20181122 |
    2018-12-14| EC2A| Search report published|Ref document number: 2690882 Country of ref document: ES Kind code of ref document: R1 Effective date: 20181207 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ESP201700307|2017-03-29|
    ES201700307A|ES2684572B1|2017-03-29|2017-03-29|Mechanism limiting the load of a crane on a boat|
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