Mechanically-driven double-gear winch for casing drilling machine

A mechanical transmission and casing drilling technology, applied in the field of drilling drawworks, can solve problems such as difficult to effectively meet the requirements of casing drilling technology, low transmission efficiency, complex structure, etc., to improve operating efficiency, reduce derrick height, and operate simple effect

Active Publication Date: 2015-07-08
SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of winch has strong lifting capacity and high maximum lifting speed, but its structure is complicated, its volume is large, its transmission efficiency is low, and it needs to shift gears frequently when the winch trips out, so it is difficult to effectively meet the requirements of casing drilling technology.

Method used

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  • Mechanically-driven double-gear winch for casing drilling machine

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing.

[0014] Such as figure 1 shown , The invention includes four parts: winch input shaft, deceleration and shifting mechanism, braking mechanism and emergency mechanism. The belt winch shaft in the parallel transmission box drives the winch input shaft 13 to move through the cardan shaft. The deceleration and shifting mechanism includes a low-grade deceleration mechanism and a high-grade deceleration mechanism. , the input end of the high-grade deceleration mechanism is connected; the low-speed deceleration mechanism is composed of the intermediate shaft 17, the pneumatic tire clutch 1, the sprocket 14, the sprocket 16, the sprocket 18, the sprocket 2 and the chain, and the low-speed deceleration mechanism passes the pneumatic tire clutch 1 and The drive shaft at one end of the drum 3 is connected; the high-grade reduction mechanism is composed of an intermediate shaft 19, a ...

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Abstract

The invention discloses a mechanically-driven double-gear winch for a casing drilling machine. The double-gear winch comprises a winch input shaft and a speed reducing shifting mechanism, wherein the speed reducing shifting mechanism comprises a high-gear speed reducing mechanism and a low-gear speed reducing mechanism. The double-gear winch is characterized in that the winch input shaft is respectively connected with input ends of the high-gear speed reducing mechanism and the low-gear speed reducing mechanism; both the high-gear speed reducing mechanism and the low-gear speed reducing mechanism are chain wheel and chain driven mechanisms; the output end of the low-gear speed reducing mechanism is connected with a driving shaft at one end of a roller through a first air tube clutch; the output end of the high-gear speed reducing mechanism is connected with a driving shaft at other end of the roller through a second air tube clutch; and a third air tube clutch is arranged on the drive shaft on the high-gear speed reducing mechanism. By adoption of the double-gear winch, gears are reduced, the structure is simplified, the shortcoming that the gears are required to be frequently shifted during tripping of the conventional winch is overcome, the structure of a winch control part can be simultaneously simplified, and the double-gear winch is simply operated, the driving efficiency of the winch is effectively improved; and therefore, the working efficiency is improved, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of drilling winches, in particular to a mechanically driven two-speed drawworks applied to casing drilling rigs (well depths below 4000 meters). Background technique [0002] The drilling drawworks is one of the core components of the drilling rig system and the main lifting device of the drilling and repairing equipment. The drawworks is not only used to lower the drilling tool and casing, but also to control the drilling pressure during the drilling process. In addition, it also serves as the speed change mechanism and intermediate transmission mechanism of the turntable, and the overall lifting of the derrick. [0003] At present in our country, the mechanical transmission winches used for oil drilling rigs are mainly multi-speed winches with multi-axis chain transmission. stalls. This kind of drawworks has strong lifting capacity and high maximum lifting speed, but has complex structure, large volume, low transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/14B66D1/20B66D1/54B66D5/14B66D5/02
Inventor 屈晓妮危峰王凌寒余长柏
Owner SINOPEC OILFIELD EQUIP CORP
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