CN203729867U - Anti-dropping transmission shaft assembly for screw drilling tool - Google Patents

Anti-dropping transmission shaft assembly for screw drilling tool Download PDF

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Publication number
CN203729867U
CN203729867U CN201320734343.1U CN201320734343U CN203729867U CN 203729867 U CN203729867 U CN 203729867U CN 201320734343 U CN201320734343 U CN 201320734343U CN 203729867 U CN203729867 U CN 203729867U
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China
Prior art keywords
transmission shaft
bearing
inner sleeve
dropping
nut
Prior art date
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Active
Application number
CN201320734343.1U
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Chinese (zh)
Inventor
刘忠怀
J·M·D·罗伯特
王春秀
冯婷婷
赵志刚
肖曙光
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Shandong Luhai Petroleum Technology Co ltd
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SHANDONG LUHAI PETROLEUM EQUIPMENT CO Ltd
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Priority to CN201320734343.1U priority Critical patent/CN203729867U/en
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Publication of CN203729867U publication Critical patent/CN203729867U/en
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Abstract

The utility model provides an anti-dropping transmission shaft assembly for a screw drilling tool and relates to the technical field of well drilling tools. The anti-dropping transmission shaft assembly is characterized in that an upper anti-dropping nut is arranged at the front of an upper radial inner bearing sleeve. An adjusting pad is connected to the front of the upper anti-dropping nut. The outer diameter of the upper anti-dropping nut is larger than the inner diameter of an upper radial outer bearing sleeve. A lower anti-dropping nut is arranged between a thrust bearing and a lower radial inner bearing sleeve. The outer diameter of the lower anti-dropping nut is larger than the inner diameter of a lower bearing shell. An anti-falling inner sleeve is fixed to a large end of a joint of a transmission shaft and a drill bit. The lower anti-dropping nut is connected with the anti-falling inner sleeve in a threaded manner. The anti-dropping transmission shaft assembly has the advantages that the upper anti-dropping nut, the lower anti-dropping nut and the anti-falling inner sleeve are respectively arranged at the smallest-diameter position of the front end of the transmission shaft, the middle reducing position of the transmission shaft and the position at the large end of the joint of the transmission shaft and the drill bit. In this way, the problem that an existing transmission shaft falls into a well due to breakage of a stress concentration position of the existing transmission shaft can be effectively solved. Meanwhile, the anti-dropping transmission shaft assembly is simple in structure and smart in design and is safe and reliable.

Description

The anti-lost driving-shaft assembly of helicoid hydraulic motor
Technical field
The utility model relates to drilling tool technical field, relates in particular to the anti-lost driving-shaft assembly of a kind of helicoid hydraulic motor.
Background technology
Helicoid hydraulic motor, weighed displacement motor, is a kind of positive displacement mud motor again, in oil/gas drilling, helicoid hydraulic motor is mainly used in boring special well, also can be used to drilling straight-hole.Helicoid hydraulic motor is mainly comprised of by-pass valve assembly, anti-lost assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly, and driving-shaft assembly is positioned at the lower end of helicoid hydraulic motor, and its effect is that the rotary power that motor is produced passes to drill bit.Power transmission shaft is owing to bearing in drilling process compared with high pulling torque, because the diameter of power transmission shaft changes, at diameter, change from small to big place and screw thread place owing to how much existing stress to concentrate, there is more or less phenomenon of rupture herein, if there is no falling-proof apparatus, the power transmission shaft well that can fall causes the accident, especially for power transmission shaft bottom, connect large end top, drill bit place also anti-lost without any the design of Yi Ge producer at present herein, annual because there is no anti-drop structure herein, and the major accident of holding greatly top to occur fracture and falling well happens occasionally, cause the reliability of existing helicoid hydraulic motor poor.
Utility model content
The purpose of this utility model is to provide the anti-lost driving-shaft assembly of a kind of helicoid hydraulic motor, to solve the power transmission shaft that prior art exists, there is no anti-drop structure and the problem of the well that falls.
The utility model device is mainly by upper journal bearing inner sleeve, upper journal bearing overcoat, thrust bearing, upper bearing (metal) shell, lower bearing shell, lower radial bearing inner sleeve and power transmission shaft form, upper journal bearing inner sleeve and upper journal bearing overcoat are arranged at power transmission shaft front end, thrust bearing is arranged on power transmission shaft middle part, upper bearing (metal) shell is arranged at thrust bearing surface, lower radial bearing inner sleeve is arranged at power transmission shaft rear portion, the outside that lower bearing shell is positioned at lower radial bearing inner sleeve is connected with upper bearing (metal) shell, between thrust bearing and lower bearing shell, thrust ring is set, solving the technical scheme that its technical problem adopts is that a upper anti-lost nut is set before upper journal bearing inner sleeve, upper anti-lost nut the place ahead connects an adjusting pad, the external diameter of upper anti-lost nut is larger than the internal diameter of upper journal bearing overcoat, anti-lost nut under one is set between thrust bearing and lower radial bearing inner sleeve, and the external diameter of lower anti-lost nut is larger than the internal diameter of lower bearing shell, the transmission large end in drill bit place that is coupling is fixed an anticreep inner sleeve by screw, and lower anti-lost nut is connected with anticreep inner sleeve by screw thread.
Between the screw of above-mentioned lower radial bearing inner sleeve and fixedly anticreep inner sleeve, hold-down ring is set.
The utility model device by the most tiny position of power transmission shaft point diameter, reducing position, power transmission shaft middle part and the transmission large end position in drill bit place that is coupling arranges respectively anti-lost nut, lower anti-lost nut and anticreep inner sleeve, effectively solved existing power transmission shaft stress concentrated position because fracture causes the fall problem of well of power transmission shaft, have advantages of simple in structure, design ingenious and safe and reliable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
The structural representation of Fig. 1 the utility model device.
Journal bearing overcoat in journal bearing inner sleeve, 4 on anti-lost nut, 3 on 1 adjusting pad, 2 in figure, 5 thrust bearings, 6 thrust rings, 7 times anti-lost nuts, 8 upper bearing (metal) shells, 9 lower bearing shells, 10 anticreep inner sleeves, 11 lower radial bearing inner sleeves, 12 hold-down rings, 13 screws, 14 power transmission shafts.
The specific embodiment
As shown in the figure, the anti-lost driving-shaft assembly of a kind of helicoid hydraulic motor, mainly by upper journal bearing inner sleeve 3, upper journal bearing overcoat 4, thrust bearing 5, upper bearing (metal) shell 8, lower bearing shell 9, lower radial bearing inner sleeve 11 and power transmission shaft 14 form, upper journal bearing inner sleeve 3 and upper journal bearing overcoat 4 are arranged at power transmission shaft 14 front ends, thrust bearing 5 is arranged on power transmission shaft 14 middle parts, upper bearing (metal) shell 8 is arranged at thrust bearing 5 surfaces, lower radial bearing inner sleeve 11 is arranged at power transmission shaft 14 rear portions, the outside that lower bearing shell 9 is positioned at lower radial bearing inner sleeve 11 is connected with upper bearing (metal) shell 8, between thrust bearing 5 and lower bearing shell 9, thrust ring 6 is set, a upper anti-lost nut 2 is set before upper journal bearing inner sleeve 3, upper anti-lost nut 2 the place aheads connect an adjusting pad 1, as shown in a-quadrant in figure, power transmission shaft 14 has helicitic texture herein, herein owing to being the most tiny part of power transmission shaft diameter, under identical torsional interaction, stress is maximum herein, top also has universal drive shaft that the eccentric motion of motor is transformed into the fixed-axis rotation on power transmission shaft simultaneously, also there is flexural stress herein, so place is subject to stress complicated, the fracture probability occurring is larger, because the restriction of external diameter can not infinitely strengthen, anti-lost nut 2 is set herein, the external diameter of upper anti-lost nut 2 is larger than the internal diameter of upper journal bearing overcoat 3, once power transmission shaft 14, on the top of upper anti-lost nut 2, rupture, the external diameter of upper anti-lost nut 2 also can be blocked and be unlikely to cause falling well by the internal diameter of upper journal bearing overcoat 3, anti-lost nut 7 under one is set between thrust bearing 5 and lower radial bearing inner sleeve 11, as shown in B region in figure, power transmission shaft 14 diameter herein changes from small to big, also there is phenomenon of rupture herein, for anti-lost nut 7 under this problem develop, the external diameter of lower anti-lost nut 7 is larger than the internal diameter of lower bearing shell 9, and same anti-lost nut 7 at present links by screw thread and anticreep inner sleeve 10, once fracture herein, the external diameter of lower equally anti-lost nut 7 also can be blocked by the internal diameter of lower bearing shell 9 and be unlikely to cause falling well, the transmission large end in drill bit place that is coupling is fixed an anticreep inner sleeve by screw, lower anti-lost nut is connected with anticreep inner sleeve by screw thread, between the screw 13 of lower radial bearing inner sleeve 11 and fixedly anticreep inner sleeve 10, hold-down ring 12 is set, as shown in C region in figure, power transmission shaft 14 is also because diameter changes from small to big herein, and below it, connect drill bit, alternating stresses is complicated, there is phenomenon of rupture, for the anti-lost inner sleeve 10 of this problem develop, once fracture herein, anticreep inner sleeve 10 links by high-intensity bolt 13 and the large end of power transmission shaft 14, effectively avoided the well accident that falls that fracture causes herein.

Claims (2)

1. the anti-lost driving-shaft assembly of helicoid hydraulic motor, mainly by upper journal bearing inner sleeve, upper journal bearing overcoat, thrust bearing, upper bearing (metal) shell, lower bearing shell, lower radial bearing inner sleeve and power transmission shaft form, upper journal bearing inner sleeve and upper journal bearing overcoat are arranged at power transmission shaft front end, thrust bearing is arranged on power transmission shaft middle part, upper bearing (metal) shell is arranged at thrust bearing surface, lower radial bearing inner sleeve is arranged at power transmission shaft rear portion, the outside that lower bearing shell is positioned at lower radial bearing inner sleeve is connected with upper bearing (metal) shell, between thrust bearing and lower bearing shell, thrust ring is set, it is characterized in that, before journal bearing inner sleeve, a upper anti-lost nut is set, upper anti-lost nut the place ahead connects an adjusting pad, the external diameter of upper anti-lost nut is larger than the internal diameter of upper journal bearing overcoat, anti-lost nut under one is set between thrust bearing and lower radial bearing inner sleeve, and the external diameter of lower anti-lost nut is larger than the internal diameter of lower bearing shell, the transmission large end in drill bit place that is coupling is fixed an anticreep inner sleeve by screw, and lower anti-lost nut is connected with anticreep inner sleeve by screw thread.
2. the anti-lost driving-shaft assembly of helicoid hydraulic motor according to claim 1, is characterized in that lower radial bearing inner sleeve and fixedly between the screw of anticreep inner sleeve, hold-down ring is set.
CN201320734343.1U 2013-11-20 2013-11-20 Anti-dropping transmission shaft assembly for screw drilling tool Active CN203729867U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320734343.1U CN203729867U (en) 2013-11-20 2013-11-20 Anti-dropping transmission shaft assembly for screw drilling tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320734343.1U CN203729867U (en) 2013-11-20 2013-11-20 Anti-dropping transmission shaft assembly for screw drilling tool

Publications (1)

Publication Number Publication Date
CN203729867U true CN203729867U (en) 2014-07-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320734343.1U Active CN203729867U (en) 2013-11-20 2013-11-20 Anti-dropping transmission shaft assembly for screw drilling tool

Country Status (1)

Country Link
CN (1) CN203729867U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615193A (en) * 2013-11-20 2014-03-05 山东陆海石油装备有限公司 Anti-dropping transmission shaft assembly for positive displacement motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615193A (en) * 2013-11-20 2014-03-05 山东陆海石油装备有限公司 Anti-dropping transmission shaft assembly for positive displacement motor

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: SHANDONG LUHAI PETROLEUM EQUIPMENT CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 253000 Lingxian County Economic Development Zone, Dezhou, Beichen Road, the middle of the road north of the city of Shandong

Patentee after: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO.,LTD.

Address before: 253000 Lingxian County Economic Development Zone, Dezhou, Beichen Road, the middle of the road north of the city of Shandong

Patentee before: SHANDONG LUHAI PETROLEUM EQUIPMENT Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220323

Address after: 253500 north of the middle section of Beichen Road, economic development zone, Lingcheng District, Dezhou City, Shandong Province

Patentee after: SHANDONG LUHAI NEW ENERGY TECHNOLOGY CO.,LTD.

Address before: 253000 north of the middle section of Beichen Road, Lingxian Economic Development Zone, De Zhou City, Shandong Province

Patentee before: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO.,LTD.

TR01 Transfer of patent right

Effective date of registration: 20220629

Address after: 253500 No. 6, Beichen Road, economic development zone, Lingcheng District, De Zhou City, Shandong Province

Patentee after: SHANDONG LUHAI PETROLEUM TECHNOLOGY CO.,LTD.

Address before: 253500 north of the middle section of Beichen Road, economic development zone, Lingcheng District, Dezhou City, Shandong Province

Patentee before: SHANDONG LUHAI NEW ENERGY TECHNOLOGY CO.,LTD.