• 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:
    Agricultural implement, with a first assembly (10) that can be rotated several times about an axis, with a second assembly (11) stationary with respect to the rotational movement of the first assembly (10), with one between the first assembly (10) and the second assembly (11) extending cable (12) which engages with a first end on the first assembly (10) and with a second end on the second assembly (11), the cable (12) having a permissible bending radius which is smaller than twice the outer diameter of the cable (14).
    公开号:BE1026744B1
    申请号:E20195777
    申请日:2019-11-12
    公开日:2021-01-05
    发明作者:Ralf Hepp；Manuel Hugger
    申请人:Claas Saulgau Gmbh；
    IPC主号:
    专利说明:

    Agricultural working device The invention relates to an agricultural working device according to the preamble of claim 1.
    A large number of agricultural implements are known which have a first assembly that is rotatable about an axis and a second assembly that is stationary with respect to the rotational movement of the first assembly.
    An example is a chopping mechanism of a forage harvester, the chopping knives of which are ground by a grinding device. Such a grinding device has a grindstone that can be rotated several times about an axis. The grinding stone can be rotated relative to a grinding slide, the grinding slide being stationary relative to the rotary movement of the grinding stone and being translationally displaceable along a guide together with the grinding stone. From DE 10 2016 101 834 A1, the basic structure of such a grinding device for the chopping knives of a chopping unit is known. From DE 10 2015 120 564 A1 it is known that the grindstone that can be rotated about its axis is connected to an evaluation device, for example via power lines. Rotary transmitters have hitherto been used to guide such power lines or cables, starting from the rotating grindstone, in the direction of the evaluation device which is stationary with respect to the rotational movement of the grindstone. Rotary transmitters are expensive and sensitive to environmental influences. In addition, rotary joints require a relatively large installation space. There is a need for an agricultural implement in which a signal transmission between a rotatable, first assembly and a second assembly, which is fixed with respect to the rotational movement of the first assembly, is possible without such a rotary transmitter.
    Proceeding from this, the present invention is based on the object of creating a new type of agricultural implement. This object is achieved by an agricultural implement according to claim 1. According to the invention, a cable extends between the first assembly and the second assembly, with a first end engaging the first assembly and a second end with the second assembly, the cable having a permissible bending radius that is smaller than twice the outer diameter of the cable. With the present invention it is proposed to connect the first assembly, which is rotatable about an axis, to the second assembly, which is stationary with respect to the first assembly, via a cable, the permissible bending radius of which is smaller than twice the outer diameter of the cable. A cable of this type has sufficient resistance to bending and torsion in order to design a coupling between the two assemblies without a rotary transmitter for a limited number of revolutions. The invention therefore makes it possible to dispense with expensive rotary transducers that are sensitive to environmental influences and that take up a relatively large installation space.
    According to an advantageous further development of the invention, the cable has a flexibility according to the standard IEC 60228 (DIN VDE 0295) of conductor class 5 or conductor class 6. Such cables are particularly preferred for the permanent connection of a first assembly, which is rotatable several times about an axis, to a second assembly that is stationary with respect to the rotational movement of the first assembly.
    According to an advantageous development of the invention, the cable has the following composite structure: An expandable, electrically insulating support element. One or more electrically conductive tracks received by the support element, the electrically conductive tracks or wires being formed by nano-particles which have a length-diameter ratio of at least 50 and a diameter of at most 300 nm (nanometers). A cable with such a composite structure is particularly preferred in order to permanently connect the first assembly, which is rotatable several times about its axis, to the second assembly, which is fixed with respect to the rotational movement of the first assembly.
    According to an advantageous development, the first assembly, which can be rotated several times about an axis, comprises a grindstone of a grinding device for a chopping knife of a chopping mechanism of a forage harvester. The second subassembly, which is stationary with respect to the rotary movement of the first subassembly, comprises a grinding slide of the grinding device, which can be displaced in translation along a guide together with the grinding stone. The connection is particularly preferably used in a grinding device of a chopping mechanism of a forage harvester. Preferred developments of the invention result from the subclaims and the following description.
    Embodiments of the invention are explained in more detail with reference to the drawing, without being restricted thereto. 1 shows a detail of an agricultural implement designed as a chopper of a forage harvester in the area of a grinding device for the chopper knives of the chopper in a perspective view in a first state; Fig. 2 is a plan view of Fig. 1; 3 shows the detail of FIG. 1 in a second state; Figure 4 is a plan view of Figure 3; FIG. 5 shows a detail of FIG. 1 together with a further cable; FIG. FIG. 6 shows some assemblies of FIG. 5 in isolation.
    The present invention relates to an agricultural implement which comprises a first assembly that can be rotated several times about an axis and a second assembly which is stationary with respect to the rotational movement of the first assembly and which are to be connected to one another for the transmission of signals and / or electrical power.
    The invention is described below with reference to FIGS. 1 to 6 for the preferred application in which the first assembly 10, which can be rotated several times about an axis, comprises a grindstone 10a of a grinding device for chopper knives of a chopper of a forage harvester. The first assembly 10, which can be rotated about the axis, comprises, in addition to the grindstone 10a, a spindle 10b which interacts with a ratchet wheel 10c.
    The second subassembly 11, which is fixed with respect to the rotational movement of the first subassembly 10, comprises a grinding slide 11a which can be displaced translationally along a guide 13 together with the grinding stone 10a. A holder 11b acts on the grinding carriage 11a. The construction of a grinding device is known to the person skilled in the art, e.g. from DE 10 2016 101 834 A1 and DE 10 2015 120 564 A1.
    The first assembly 10 rotatable about its axis, in the embodiment shown the grindstone 10a or the spindle 10b receiving the grindstone 10a, must be electrically connected, for example to an evaluation device. For this purpose it is necessary to transmit signals from the first assembly 10, in particular from the grinding stone 10a, in the direction of the evaluation device.
    In order not to have to use a rotary transmitter, it is proposed according to the invention that a cable 12 extends between the first assembly 10, in the embodiment shown between the grindstone 10a, and the second assembly 11, in the embodiment shown the grinding carriage 11a, the cable 12 engages with a first end on the first assembly 10 and with a second end on the second assembly 11, in the exemplary embodiment shown, on the holder 11b of the second assembly 11.
    The cable 12 has a permissible bending radius that is smaller than twice the outer diameter of the cable 12.
    Such a cable 12 is suitable for permanently absorbing bends and torsions of the cable 12 that occur during operation without the risk of damage to the cable 12. FIGS. 1 and 2 show the cable 12 in an untwisted or untwisted state.
    By rotating the first assembly 10, the cable 12 is also twisted or twisted and thus mechanically stressed, FIGS. 3 and 4 showing this twisting of the cable 12.
    The first end of the cable 12 engages the first assembly 10, in the illustrated embodiment, the grinding stone 10a, via a first strain relief element 14.
    At an opposite second end of the cable 12, the same engages the second subassembly 11, in the exemplary embodiment shown, the holder 11b, via a second strain relief element 15.
    The ends of the cable 12 can grip the respective assembly firmly or preferably via a plug connection.
    When the ends of the cable 12 engage the respective assembly via a plug connection, the plug connections preferably provide the strain relief elements 14, 15.
    The cable 12, which extends between the first assembly 10, which is rotatable about the axis, and the second assembly 11, which is fixed with respect to the rotational movement of the first assembly 10, is preferably a cable 12 with flexibility according to the standard IEC 60228 (DIN VDE 0295) of conductor class 5, preferably conductor class 6. Such cables 12 are flexible or highly flexible and can withstand the mechanical loads that occur during operation, in particular bending loads and torsional loads, in a long-term manner.
    A cable 12 with a composite structure is particularly preferably used.
    Such a cable 12 has an expandable, electrically insulating support element as well as one or more electrically conductive tracks received by the support element, the electrically conductive
    gen tracks of nano-particles are formed which have a length-to-diameter ratio of at least 50 and a maximum diameter of 300 nm.
    The expandable, electrically insulating support element is an element that is formed from an electrically insulating polymer, in particular from a polydimethylsiloxane (PDMS) and / or a polyurethane (PU) and / or from a fluoropolymer.
    The nano-particles are formed from silver and / or gold and / or platinum and / or iridium and / or titanium and / or tantalum and / or niobium and / or copper and / or nickel and / or from an electrically conductive polymer .
    A surface of the nano-particles is preferably at least partially coated with aluminum oxide and / or titanium oxide and / or niobium oxide and / or silicon oxide and / or a monosilane and / or a monothiol.
    In the preferred application of a grinding device for the chopper knives of a chopper of a forage harvester, the cable 12, which extends between the first assembly 10, here the grindstone 10a, and the second assembly 11, here the grinding slide 11a, has another one Cable 16 contacted in an electrically conductive manner, this cable 16 being a cable which is guided in a drag chain guide 17.
    As already stated, the rotatable, first assembly 10, here the grindstone 10a, together with the second assembly 11, here the grinding slide 11a, which is stationary with respect to the rotational movement of the first assembly 10, can be displaced translationally along the guide 13 Drag chain guide 17, in which the cable 16 is guided, ensures that, despite this translational relative movement, permanent electrical contacting of the rotatable first assembly 10, here the grindstone 10a, is possible with an evaluation device (not shown).
    The invention allows a cost-effective electrical connection, which is insensitive to environmental influences, of a rotatable component with a component which is stationary with respect to the rotary movement of the rotatable component, with little installation space, without the need for a rotary transmitter.
    Rather, the invention uses a cable.
    For this purpose, the invention uses cables that have sufficient flexural strength and torsional resistance.
    The particularly preferred cable 12, which is essentially formed by nano-particles, electrically conductive tracks or
    Has wires, which are accommodated in an expandable, electrically insulating support element, can absorb torsional forces that arise when its ends - viewed over a length of one meter - are twisted against each other by more than 180 degrees around their own axis - both in the one as well as in the other direction of rotation.
    LIST OF REFERENCE NUMERALS 10 first assembly 10a grinding stone 10b spindle
    10c ratchet 11 second assembly 11a grinding carriage 11b bracket
    12 Cable 13 Guide 14 Connector / strain relief element Connector / strain relief element 16 Cable
    15 17 drag chain guide
    权利要求:
    Claims (10)
    [1]
    1. Agricultural work device, with a first assembly (10) which can be rotated several times about an axis, with a second assembly (11) which is stationary with respect to the rotational movement of the first assembly (10), characterized by a between the first assembly (10) and the second assembly (11) extending cable (12) which engages with a first end on the first assembly (10) and with a second end on the second assembly (11), wherein the cable (12) has a permissible bending dius, which is smaller than twice the outer diameter of the cable (12).
    [2]
    2. Agricultural implement according to claim 1, characterized in that the cable (12) is attached at the first end to the first assembly (10) via a strain relief element (14).
    [3]
    3. Agricultural implement according to claim 1 or 2, characterized in that the cable (12) is fastened at the second end to the second assembly (11) via a strain relief element (15).
    [4]
    4. Agricultural implement according to one of claims 1 to 3, characterized in that the cable (12) has a flexibility according to the standard IEC 60228 (DIN VDE 0295) of conductor class 5.
    [5]
    5. Agricultural implement according to one of claims 1 to 3, characterized in that the cable (12) has a flexibility according to the standard IEC 60228 (DIN VDE 0295) of conductor class 6.
    [6]
    6. Agricultural implement according to one of claims 1 to 5, characterized in that the cable (12) has the following composite structure: an expandable, electrically insulating support element, one or more electrically conductive tracks received by the support element, wherein the electrically Conductive tracks are formed by nano-particles that have a length-to-diameter ratio of at least 50 and a maximum diameter of 300 nanometers.
    [7]
    7. Agricultural implement according to claim 6, characterized in that the stretchable, electrically insulating support element is formed from an electrically insulating polymer, in particular from a polydimethylsiloxane (PDMS) and / or a polyurethane (PU) and / or a fluoropolymer, the nano-particles are formed from silver and / or gold and / or platinum and / or iridium and / or titanium and / or tantalum and / or niobium and / or copper and / or nickel and / or from an electrically conductive polymer.
    [8]
    8. Agricultural implement according to claim 7, characterized in that a surface of the nano-particles is at least partially coated with aluminum oxide and / or titanium oxide and / or niobium oxide and / or silicon oxide and / or a monosilane and / or a monothiol .
    [9]
    9. Agricultural implement according to one of claims 1 to 8, characterized in that the first assembly (10), which can be rotated several times about an axis, comprises a grindstone (10a) of a grinding device for a chopping knife of a chopping unit of a forage harvester,
    the second subassembly (11), which is stationary with respect to the rotational movement of the first subassembly (10), comprises a grinding slide (11a) of the grinding device which can be translated along a guide (13) together with the grinding stone (10a).
    [10]
    10. Agricultural implement according to claim 9, characterized in that the cable (12) is fastened to the first assembly (10) at the first end via a first connector (14), the cable (12) to the second end the second assembly (11) is attached, and is connected via a second connector (15) to a cable (16) which is guided in a drag chain guide (17).
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2780985B1|2016-12-14|Connecting element
    DE3705751C2|1988-12-22|
    EP2338211B1|2012-05-16|Slip ring unit
    DE3140781C2|1989-11-23|
    EP3242359B1|2019-07-17|Cable
    EP2805381B1|2015-07-22|Connecting element
    DE4425867A1|1996-01-25|Arrangement for changing the direction of a protective hose system
    DE2827295A1|1979-01-11|ARRANGEMENT FOR DRILL ROD WITH A CONNECTING PIECE, A DRIVE ROD AND GGF. A SLIDER PART TO CONNECT TO A REMOTE DISPLAY DEVICE
    EP0738027B1|2004-03-03|Line connector
    DE102017010773B4|2020-07-16|Track structure of a robot
    BE1026744B1|2021-01-05|Agricultural implement
    DE102004004616B4|2005-12-22|Joint arrangement for cable entry
    DE102018212748A1|2019-02-07|ROTARY AXIS CABLE CONNECTION STRUCTURE
    DE3008396C2|1981-11-12|Digital electrical angle measuring device
    WO2018015005A1|2018-01-25|Adapter, and cable with adapter
    EP2599174B1|2017-10-18|Signal cable and vehicle, in particular rail vehicle having such a signal cable
    DE102010000822A1|2010-08-12|Wire connection unit
    EP3239990B1|2021-09-15|Method of manufacturing an electrical cable
    DE2847111C2|1989-08-24|
    DE60104219T2|2005-08-25|Connector for a cable and kit for its assembly
    EP2937951B1|2019-08-21|Coil spring with a ribbon cable and a connector
    DE202021103424U1|2021-07-30|Strain relief device, connector assembly and medical device
    EP0963878B1|2003-09-10|Rotary connector with flat cable and round cable
    DE622263C|1935-11-23|Universal joint-like connection for electrical lines
    DE102018003601A1|2018-10-25|Solder connector for connecting two double conductors
    同族专利:
    公开号 | 公开日
    BE1026744A1|2020-05-28|
    DE102018128449A1|2020-05-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3751859A|1971-09-24|1973-08-14|Sperry Rand Corp|Forage harvester knife sharpener with a rotary abrasive wheel|
    CN101707072A|2009-12-02|2010-05-12|上海亚龙工业股份有限公司|Flexible silane crosslinking polyolefin elastic insulated cable|
    CN201812538U|2010-10-14|2011-04-27|安徽五洲特种电缆集团有限公司|High-temperature-resistant moisture-proof mould-proof environment-friendly cable|
    DE102016101834A1|2016-02-02|2017-08-03|Claas Saulgau Gmbh|Grinding device for chopping blades of a chopping plant and chopping plant|
    WO2018206455A1|2017-05-11|2018-11-15|Walter Maschinenbau Gmbh|Grinding and/or eroding machine, and method for measuring and/or referencing the machine|
    DE19910758A1|1999-03-11|2000-09-14|Deere & Co|Grinding device|
    DE102015120564A1|2015-11-26|2017-06-01|Claas Saulgau Gmbh|Device for detecting the sharpness of cutting edges of chopping knives of a chopper drum of a forage harvester|
    法律状态:
    2021-03-19| FG| Patent granted|Effective date: 20210105 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018128449.7A|DE102018128449A1|2018-11-13|2018-11-13|Agricultural implement|
    [返回顶部]