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公开(公告)号：US11008173B1
公开(公告)日：2021-05-18
申请号：US16670771
申请日：2019-10-31
发明人： Jack Peter Urban Wilthorn , Ulf Göran Gramby , Bengt Anders Gerhard Bengtsson , Per Martin Ström
摘要： The bottom tier (24) of a conveyor belt (22) arranged in a spiral stack (26) is supported by and driven by inner and outer drive chains (28) and (30). The inner and outer drive chains are supported on and ride along support rails (32) and (34). The inner and outer drive chains are driven by a drive system (35) composed of inner and outer drive systems (36) and (38), each including a drive motor with a drive gear engaged with the inner and outer drive chains. Each of the motors is controlled by a separate variable frequency drive unit (114) and (116) which in turn are controlled by a control system (44). The control system (44) also controls the operation of a lubrication system (40) that supplies lubricant to the drive chains.
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公开(公告)号：US20200283031A1
公开(公告)日：2020-09-10
申请号：US16293258
申请日：2019-03-05
摘要： A longitudinally curved support rail (56) for supporting and moving a drive chain assembly (52) at the base of a spiral conveyor belt (34) to drive the bottom tier (30) of the spiral conveyor belt while being supported by the support rail. The support rail including an upright web section (80) and a support flange (78) cantilevered outwardly from the web section to provide a platform or shelf to support a chain drive assembly (52), thereon during travel of the chain drive assembly along the support rail.
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公开(公告)号：US20210130100A1
公开(公告)日：2021-05-06
申请号：US16670771
申请日：2019-10-31
发明人： Jack Peter Urban Wilthorn , Ulf Göran Gramby , Bengt Anders Gerhard Bengtsson , Per Martin Ström
IPC分类号： B65G21/18
摘要： The bottom tier (24) of a conveyor belt (22) arranged in a spiral stack (26) is supported by and driven by inner and outer drive chains (28) and (30). The inner and outer drive chains are supported on and ride along support rails (32) and (34). The inner and outer drive chains are driven by a drive system (35) composed of inner and outer drive systems (36) and (38), each including a drive motor with a drive gear engaged with the inner and outer drive chains. Each of the motors is controlled by a separate variable frequency drive unit (114) and (116) which in turn are controlled by a control system (44). The control system (44) also controls the operation of a lubrication system (40) that supplies lubricant to the drive chains.
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