WO2014082792A1 - Kabelbruchdiagnose bei einem kran - Google Patents
Kabelbruchdiagnose bei einem kran Download PDFInfo
- Publication number
- WO2014082792A1 WO2014082792A1 PCT/EP2013/071972 EP2013071972W WO2014082792A1 WO 2014082792 A1 WO2014082792 A1 WO 2014082792A1 EP 2013071972 W EP2013071972 W EP 2013071972W WO 2014082792 A1 WO2014082792 A1 WO 2014082792A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cable
- crane
- detected
- boom
- control device
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/46—Position indicators for suspended loads or for crane elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
Definitions
- the invention relates to a crane and a method for operating a crane, comprising a base part with a pivotable and telescopic boom with at least one further boom element, wherein a hosted and telescopic boom with at least one further boom element, wherein a hosted and telescopic boom is provided which has at least one cable, with which the length of the telescopic boom is detected, and a method of operating such a crane, according to the respective features of the preambles of the independent claims.
- Cranes with pivoting, rotatable and telescopic arms which have several boom elements, as well as comparable work vehicles with variable in length work elements (so that the invention is not only on cranes with telescopic arms, but generally referred to such work vehicles) are known.
- a base member is present, with which the crane can be brought over roads and the like to its work site.
- a rotary part is often arranged, wherein either a cantilever is arranged on the base part or on the rotary part.
- the boom consists of a part which is directly pivotally mounted on the base part or on the rotary part and has further boom elements.
- LWG length-angle encoders
- the angle of attack of the jib with respect to the base part (or the bottom) is detected and at the same time the length of the telescoped jib is detected.
- a rope which is usually attached to the top of the last boom element, extended with and the extended length of the rope detected by the length encoder in a conventional manner. Due to the detected length and the angle of attack of the boom, these parameters can be included in a corresponding control device of the crane and taken into account during operation such that when exceeding impermissible lengths or angles of the operation of the crane is suppressed or at least a warning.
- the length angle encoder with its elements represents a safety-relevant component, it is necessary to take measures that in the detection and transmission of the output signals of the Solnwinkelgebers, which represent the length and the angle of attack of the boom, no errors occur or that the provision of the signals is always guaranteed for the downstream control device.
- the invention is therefore based on the object, a crane and a method for operating a crane (or generally a work machine with variable-length work elements) to provide, with the above-described disadvantages are avoided.
- a crane or generally a work machine with variable-length work elements
- the invention is achieved according to the invention in that a force sensor assigned to the cable is provided with which the force acting on the cable in its axial orientation is detected. This ensures that whenever the force sensor detects a predetermined force acting on the cable, the cable is still performing its function and, for example! Not torn. Should it be damaged, cracked or the like, a deviating from the predetermined range of values for a permissible force force is determined, which is discharged from the force sensor to a downstream control device.
- This control device evaluates the force and, for example, can signal to a crane operator that safe operation of the crane is no longer possible. This can then react either manually or automatically by the control device accordingly.
- the cable is a steel cable and / or an electrical cable.
- the invention offers the simple possibility of retrofitting already existing length encoders with steel cables with the force sensor. For this purpose, it is only necessary to arrange the force sensor in the course of the steel cable and to ensure that its output signal is transmitted to a control device of the crane.
- the cable is an electrical cable. By such a cable, it is possible in an advantageous manner, on the one hand to detect the boom length and at the same time to transmit signals via the electrical conductors of the electric cable.
- the force sensor is arranged with its one end at the tip of the arm and with its other end at the end of the electric cable. Since the force sensor is thus located at the farthest point from the base part or rotary part and the control device is usually arranged in the base part or the rotary part of the crane, the signals of the force sensor can be transmitted to the control devices via the electric cable.
- the force sensor transmits a signal acting on the cable representing signal to a control device of the crane.
- These agents can, as already mentioned, for Example, the electric cable, which thus fulfills two functions.
- the length of the telescopic arm is detected with it by unwinding on the length angle sensor, and at the same time the forces acting on the cable, more precisely the signals of the force sensor, are transmitted to the control device arranged further away.
- the means may be configured as wireless transmission means, so that the output signals of the force sensor are transmitted wirelessly (for example via radio) to the control device.
- the force acting on the cable in its axial orientation is detected with a force sensor assigned to the cable.
- the detected force can be divided into different areas.
- One area is such forces that act on the cable that are allowed and on the other hand are areas (especially areas below and / or above the allowable range) that are generally a problem with the cable, for example, slipping Jamming, breakage or the like.
- the detection of the force on the cable by means of the force sensor is continuous (constantly, with an interval detection is conceivable), wherein furthermore the transmission of the output signal of the force sensor is continuous or discontinuous to the control device, and then if a transmitted Signal is missing, is recognized by the control device, a safety-critical state.
- the force sensor is functioning properly and provides a force signal on the cable.
- the discontinuous transmission and monitoring of the signal has the advantage that it saves energy because it is not always necessary for the signal to be transmitted and the control device does not have to constantly receive the discontinuously transmitted signals.
- the force sensor can be designed and adapted to transmit a signal representing the force in the context of a pulse train via the cable and / or wirelessly to the control device. If this pulse train or parts of the pulse train fail, this is a signal for the control device that the transmission has not occurred properly. If a pulse sequence only lasts for a short time, it can be concluded that the transmission was only interrupted for a short time, so that no safety-critical state has yet been reached.
- a predeterminable time threshold within which a pulse train should have been detected is absent, this is a sign of an improper transmission, so that then can be concluded on a safety-critical state.
- the transmitted signal is evaluated by the control device and, upon leaving an uncritical region, a safety-critical state is detected by the control device.
- a safety-critical state is detected by the control device.
- the force acting on the cable and detected by the force sensor is within a certain predeterminable range.
- this area is then left when the cable is broken, worn, slipped or the like, as a result of which it is advantageously provided that the transmitted signal, which represents the force acting on the cable, is evaluated by the control device.
- the transmission of the signal takes place redundantly.
- the redundant transmission of the signal takes place either only via the cable designed as a data cable, or only wirelessly (via two mutually independent radio links) or via the cable designed as a data cable and wirelessly.
- For the redundant transmission of the signal via at least one radio channel are corresponding transceiver units, which are connected to the control device available, so that these transceiver units wirelessly with the control device exchange the signals.
- 1 denotes a crane having, for example, a base part 2 (with drive for a driving operation), on which a rotary member 3 is arranged.
- a pivotable arm 4 base arm
- Auslegereiemente 5, 6 also only an additional boom element or more than two boom elements
- a rope 8 (crane rope) passes over the tip of the boom element 6 to a hook 9 arranged at the end.
- the basic part 2 is represented by a length-angle doubler 10, the structure of which is also known per se.
- Thisjurinwinkeigeber 10 is on the one hand suitable and adapted to detect the angle of the boom 4 with respect to the Drehteii 3 and the base part 2 (not shown here). With 11, an output signal of the Conswinkelgebers 10 is designated, which is transmitted to a control device, not shown here.
- a cable 12 is present between the Conswinkeigeber 10 and here the tip of the boom member 6.
- This cable 12 is rolled up at fully retracted AusSegereiementen 5, 6 in the Conswinkeigeber 10 and can be rolled out during extension of the boom elements 5, 6 of a cable drum in theChinanwinkeigeber 10.
- This process is detected in a conventional manner by the Consnwinkeigeber 10 so that the output signal 11 not only transmits the angle of attack of the boom 4 to the control device, but also the respectively set length of the boom 4 with its boom elements 5, 6th
- the cable 12 is associated with a force sensor 13, wherein this force sensor 13 is in the embodiment of Figure 1 in the course of the cable 12 and in the end region of the boom element 6 (ie in the direction of the jib tip) is arranged.
- this force sensor 13 is only one embodiment of a force sensor 13 and its arrangement, wherein other locations in the course of the cable 12 are conceivable.
- the force sensor 13 according to FIG. 1 directly detects the force acting on the cable 12 in its axial direction, such force sensors also come into consideration, which detect the force acting on the cable 12 indirectly (for example, inductively).
- two identical or different force sensors may be present under safety-relevant aspects.
- the cable 12 is either designed in a conventional manner as a steel cable, so it is necessary in this case, the at the Jib tip recorded on the cable 12 acting force via suitable means (see Figure 2) to transmit. If the cable 12 is designed as a data cable, the force sensor 13 can be connected to the data cable in a simple manner and its signals are transmitted in the direction of the rotary member 3, so that in this case the output signal 11 also contains the force acting on the cable 12.
- FIG. 2 shows in a schematic representation how the individual detected signals of the elements of the crane 1 can be transmitted to the control device, here denoted by 14.
- the control device 14 of the length angle encoder 10 is connected with its Marisignai 11.
- a base transmission device 15, a boom transmission device 16, and a hook transmission device 17 are provided.
- Base communication device 15 is also connected to the control device 14 and adapted and configured to receive at least signals, alternatively or additionally to deliver radio signals. The same applies to the two devices 16, 17, wherein the boom transmission device
- the forces acting on the cable 12 can be transmitted in a simple or redundant manner to the base transmission device 15 wirelessly, so that this device 15 transmits the signals of the force sensor 12 to the control device 14.
- the parameters of the hook 9, in particular the load attached thereto are recorded and also transmitted in a particularly advantageous manner by means of the hook transmission device 17, either the device 16 or directly to the base transmission device 15, in order to also transmit it To provide control device 14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
- Communication Cables (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380069530.5A CN104995124A (zh) | 2012-11-29 | 2013-10-21 | 在起重机中的缆线断裂诊断 |
US14/443,550 US20150314997A1 (en) | 2012-11-29 | 2013-10-21 | Cable breakage diagnosis in a crane |
BR112015012244A BR112015012244A2 (pt) | 2012-11-29 | 2013-10-21 | diagnóstico de ruptura de cabo em um guindaste |
RU2015124323A RU2015124323A (ru) | 2012-11-29 | 2013-10-21 | Диагностирование повреждения кабель-троса у крана |
CA2892734A CA2892734A1 (en) | 2012-11-29 | 2013-10-21 | Cable breakage diagnosis in a crane |
EP13780127.0A EP2925660A1 (de) | 2012-11-29 | 2013-10-21 | Kabelbruchdiagnose bei einem kran |
JP2015544393A JP2015535519A (ja) | 2012-11-29 | 2013-10-21 | クレーンにおけるケーブル破断診断 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012221909.9 | 2012-11-29 | ||
DE102012221909.9A DE102012221909A1 (de) | 2012-11-29 | 2012-11-29 | Kabelbruchdiagnose bei einem Kran |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014082792A1 true WO2014082792A1 (de) | 2014-06-05 |
Family
ID=49474408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/071972 WO2014082792A1 (de) | 2012-11-29 | 2013-10-21 | Kabelbruchdiagnose bei einem kran |
Country Status (9)
Country | Link |
---|---|
US (1) | US20150314997A1 (de) |
EP (1) | EP2925660A1 (de) |
JP (1) | JP2015535519A (de) |
CN (1) | CN104995124A (de) |
BR (1) | BR112015012244A2 (de) |
CA (1) | CA2892734A1 (de) |
DE (1) | DE102012221909A1 (de) |
RU (1) | RU2015124323A (de) |
WO (1) | WO2014082792A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2016107193A (ru) | 2013-08-15 | 2017-09-20 | Хиршманн Аутомейшн энд Контрол ГмбХ | "интеллектуальный" моторный тормозной механизм для датчика длины и углового положения крана |
DE102013014265A1 (de) * | 2013-08-27 | 2015-03-05 | Liebherr-Components Biberach Gmbh | Vorrichtung zur Erkennung der Ablegereife eines hochfesten Faserseils beim Einsatz an Hebezeugen |
CA2863550C (en) * | 2013-09-10 | 2023-12-12 | Southwire Company, Llc | Wireless-enabled tension meter |
CN105444710B (zh) * | 2014-08-21 | 2018-05-25 | 中联重科股份有限公司 | 多级伸缩结构行程测量装置和多级伸缩结构 |
DE202015001023U1 (de) * | 2015-02-09 | 2016-05-10 | Liebherr-Components Biberach Gmbh | Kran |
CN107352402B (zh) * | 2017-09-21 | 2018-08-03 | 上海上安机械施工有限公司 | 一种吊臂断裂主动防护装置 |
CA3138913A1 (en) * | 2019-05-07 | 2020-11-12 | Tulsa Winch, Inc. | Load moment indicator |
DE102020131333A1 (de) * | 2020-11-26 | 2022-06-02 | Liebherr-Werk Nenzing Gmbh | System und Verfahren zur Zustandserkennung einer Komponente eines Arbeitsgeräts sowie Arbeitsgerät |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2430149A1 (de) * | 1974-06-24 | 1976-02-12 | Strawson Hydraulics Ltd | Sicherheitseinrichtung fuer einen kran |
US5160055A (en) * | 1991-10-02 | 1992-11-03 | Jlg Industries, Inc. | Load moment indicator system |
DE202011051861U1 (de) * | 2011-11-04 | 2011-11-15 | Fernsteuergeräte Kurt Oelsch GmbH | Seilspannungsmesser für Seillängengeber |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3638211A (en) * | 1969-10-08 | 1972-01-25 | Litton Systems Inc | Crane safety system |
US3841493A (en) * | 1972-06-05 | 1974-10-15 | J Becker | Moment monitoring system for hydraulic-piston type cranes |
US3828339A (en) * | 1973-05-14 | 1974-08-06 | S Schedrovitsky | Crane overload safety device |
US3990584A (en) * | 1974-06-03 | 1976-11-09 | Strawson Hydraulics (Consultants) Limited | Electrical safety control device for a variable radius crane |
US5877693A (en) * | 1998-05-27 | 1999-03-02 | Grove U.S. L.L.C. | Method and apparatus for measuring the length of a multi-section telescopic boom |
JP2004047354A (ja) * | 2002-07-15 | 2004-02-12 | Fuji Heavy Ind Ltd | 車両用灯具 |
JP4731934B2 (ja) * | 2005-02-07 | 2011-07-27 | 株式会社アイチコーポレーション | 伸縮ブームのワイヤ切断検出装置 |
DE102011051861A1 (de) * | 2011-07-15 | 2012-12-27 | L'orange Gmbh | Kraftstoff-Einspritzinjektor |
-
2012
- 2012-11-29 DE DE102012221909.9A patent/DE102012221909A1/de not_active Withdrawn
-
2013
- 2013-10-21 RU RU2015124323A patent/RU2015124323A/ru not_active Application Discontinuation
- 2013-10-21 WO PCT/EP2013/071972 patent/WO2014082792A1/de active Application Filing
- 2013-10-21 CN CN201380069530.5A patent/CN104995124A/zh active Pending
- 2013-10-21 CA CA2892734A patent/CA2892734A1/en not_active Abandoned
- 2013-10-21 BR BR112015012244A patent/BR112015012244A2/pt not_active Application Discontinuation
- 2013-10-21 JP JP2015544393A patent/JP2015535519A/ja active Pending
- 2013-10-21 EP EP13780127.0A patent/EP2925660A1/de not_active Withdrawn
- 2013-10-21 US US14/443,550 patent/US20150314997A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2430149A1 (de) * | 1974-06-24 | 1976-02-12 | Strawson Hydraulics Ltd | Sicherheitseinrichtung fuer einen kran |
US5160055A (en) * | 1991-10-02 | 1992-11-03 | Jlg Industries, Inc. | Load moment indicator system |
DE202011051861U1 (de) * | 2011-11-04 | 2011-11-15 | Fernsteuergeräte Kurt Oelsch GmbH | Seilspannungsmesser für Seillängengeber |
Also Published As
Publication number | Publication date |
---|---|
JP2015535519A (ja) | 2015-12-14 |
DE102012221909A1 (de) | 2014-06-05 |
CA2892734A1 (en) | 2014-06-05 |
CN104995124A (zh) | 2015-10-21 |
RU2015124323A (ru) | 2017-01-10 |
US20150314997A1 (en) | 2015-11-05 |
EP2925660A1 (de) | 2015-10-07 |
BR112015012244A2 (pt) | 2017-07-11 |
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