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公开(公告)号：US20180100554A1
公开(公告)日：2018-04-12
申请号：US15289561
申请日：2016-10-10
IPC分类号： F16D55/225 , F16H57/025 , F16D65/12 , E21B19/00
CPC分类号： F16D55/225 , B66D5/14 , E21B19/008 , F16D65/128 , F16D2121/04 , F16H57/025 , F16H2057/02069
摘要： A drawworks gearbox includes additional braking on the input side of the gearbox to provide a redundant emergency brake and, optionally, a separate parking brake with the drum-side brakes being the emergency brake. An air-cooled brake disc is attached to a high speed coupling connected to the gearbox input pinion. A hydraulic-apply, spring-release brake is mounted to the gearbox housing at each pinion location and arranged to act on its respective disc.
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公开(公告)号：US20170159360A1
公开(公告)日：2017-06-08
申请号：US14956753
申请日：2015-12-02
摘要： A top drive system with a removable flange is provided. In one embodiment, a top drive includes a quill, a motor coupled to drive rotation of the quill, and a swivel including a housing and a bearing disposed within the housing. The top drive also includes a removable flange attached to the quill within the housing of the swivel. The bearing and the removable flange are positioned within the housing such that the bearing bears weight of the quill via the removable flange. Additional systems, devices, and methods are also disclosed.
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公开(公告)号：US10208817B2
公开(公告)日：2019-02-19
申请号：US15289561
申请日：2016-10-10
IPC分类号： B66D5/14 , F16D55/22 , F16D55/225 , E21B19/00 , F16D65/12 , F16H57/025 , F16H57/02
摘要： A drawworks gearbox includes additional braking on the input side of the gearbox to provide a redundant emergency brake and, optionally, a separate parking brake with the drum-side brakes being the emergency brake. An air-cooled brake disc is attached to a high speed coupling connected to the gearbox input pinion. A hydraulic-apply, spring-release brake is mounted to the gearbox housing at each pinion location and arranged to act on its respective disc.
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