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Dual-channel dual-way spindle buffer device built through nitrogen spring

A nitrogen gas spring, two-way buffer technology, applied in the direction of spring/shock absorber, driving device for drilling in wellbore, spring, etc. maintenance effect

Pending Publication Date: 2018-08-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The relevant domestic patent publication number CN 101235704A describes in detail the structure of the power assembly used for the rotary drive of the drill pipe, but no buffer structure is configured

Method used

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  • Dual-channel dual-way spindle buffer device built through nitrogen spring
  • Dual-channel dual-way spindle buffer device built through nitrogen spring
  • Dual-channel dual-way spindle buffer device built through nitrogen spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] see Figure 1 to Figure 4 As shown, the present invention is composed of a double-wall drill pipe inner joint 1, a double-wall drill pipe outer joint 2, a gas distribution connection flange shaft 3, a gas distribution sleeve 4, a gas distribution bearing end cover 5, an outer pipe flange shaft 6, Transition flange shaft 7, lower floating shaft 8, nitrogen spring cylinder 9, nitrogen spring flange end cover 10, upper floating shaft 11, power head box 12, bearing end cover 13, driven large gear 14, driving pinion 15 , Power transmission cylinder liner 16, MC nylon buffer pad 17, cycloid motor 18, slag discharge pipe transition joint 19, slag discharge pipe joint 20;

[0018] A slot is provided on the slag discharge pipe joint 20, and the slag discharge pipe can be buckled and pressed on the slag discharge pipe joint 20 and fastened by a collar. The slag discharge pipe joint 20 and the bearing seat sleeve 203 are connected by eight evenly distributed bolts, and are suppor...

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PUM

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Abstract

The invention discloses a dual-channel dual-way spindle buffer device built through a nitrogen spring. The device is mainly composed of a power head floating spindle, a distribution sleeve, a nitrogenspring piston shaft, a driven gear and a force transmission cylinder sleeve; the buffer device is arranged on the single-channel shaft segment above the spindle and a dual-channel distribution segment below the spindle in a split manner, the device is used for reliving axial impact and vibration in the impact rotation reverse-circulation drilling process. Dual hydraulic motor power drive is adopted, dual-side power drive is achieved, torque is balanced, radial force is avoided, and stable running is ensured, and the device is small in size, convenient to mount and maintain, compact in structure, good in stability, high in precision and capable of improving well drilling efficiency.

Description

technical field [0001] The invention relates to a power device that adopts a hydraulic motor to drive a double-wall drill pipe to rotate, which is used for reverse circulation rotary drilling, and particularly relates to a device for alleviating the axial shock and vibration of the main shaft. Background technique [0002] Eurodrill invented a power head for percussion rotary drilling with a hydraulic impactor on the top, which realizes the floating of the main shaft, uses a hydraulic accumulator for buffering, and uses a drill pipe with a single channel, and the bottom cannot be drained. scum. The relevant domestic patent publication number CN 101235704A describes in detail the structure of the power assembly used for the rotary drive of the drill pipe, but there is no buffer structure configured. Contents of the invention [0003] The invention provides a power head design of an engineering drilling rig that can be practically applied in the reverse circulation drilling...

Claims

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Application Information

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IPC IPC(8): F16F15/12F16F15/16F16F9/06F16F9/36E21B4/16E21B21/00
CPCE21B4/16E21B21/00F16F9/062F16F15/1207F16F15/161F16F15/165
Inventor 任杰王清岩王战涛孙友宏吕兰计胜利侯传彬
Owner JILIN UNIV