CN203822192U - Buffering and centering device for screw drill - Google Patents
Buffering and centering device for screw drill Download PDFInfo
- Publication number
- CN203822192U CN203822192U CN201420261252.5U CN201420261252U CN203822192U CN 203822192 U CN203822192 U CN 203822192U CN 201420261252 U CN201420261252 U CN 201420261252U CN 203822192 U CN203822192 U CN 203822192U
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- CN
- China
- Prior art keywords
- connecting ring
- hydraulic motor
- centering
- spring
- buffering
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- Expired - Fee Related
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Abstract
The utility model discloses a buffering and centering device for a screw drill, which comprises a connecting ring movably connected with the casing of the screw drill, wherein a centering body is arranged on the outer side of the connecting ring; the centering body and the connecting ring are coaxially arranged; a plurality of spring fixing grooves are formed in the inner circumferential surface of the centering body; a plurality of spring connecting grooves corresponding to the spring fixing grooves are formed in the outer circumferential surface of the connecting ring; buffer springs are fixedly arranged in buffer cavities formed by the spring fixing grooves and the spring connecting grooves; a plurality of arc centering blocks are arranged on the outer circumferential surface of the centering body; a spiral guide groove is formed between every two adjacent arc centering blocks; a support block consistent with the arc centering blocks in height is arranged in each spiral guide groove; a plurality of cylindrical composite pieces are arranged on the arc centering blocks. The buffering and centering device disclosed by the utility model is simple in structure and reasonable in design, can improve the stability and impact resistance of the drill, can improve the abrasive resistance of the centering body, is convenient to replace, can improve the centering effect, is easy to process and low in cost, and can prolong the service life.
Description
Technical field
The utility model relates to oil drilling machine technical field, is specifically related to buffering erection device for a kind of helicoid hydraulic motor.
Background technology
At present, helicoid hydraulic motor is one of requisite instrument in geological prospecting, oil drilling exploitation, and helicoid hydraulic motor is entered after helicoid hydraulic motor by drilling rod by cleaner for high-pressure drilling fluid, by hydraulic energy transfer, is mechanical energy, thereby make rotor drive main shaft and bit, reached the object of boring.Centralizer is important ingredient in helicoid hydraulic motor combination, is connected on screw rod housing, in order to prevent hole scattering, and is beneficial to drill bit smooth working.The housing whole installation of the general and helicoid hydraulic motor of existing centralizer, drill bit or reamer size and diameter of the housing differ larger, make like this centralizer difficulty of processing large, in addition, centralizer surface is generally cylindrical-shaped structure, wear-resistant surface is the periphery of centralizer, has increased like this cost, and after certain position wearing and tearing, can not effectively play centralizing function, and such centralizer can not change, after wearing and tearing, cause whole drilling tool failure, cause great waste.In addition, centralizer is often impacted in the course of the work, cannot play cushioning effect, easily causes rigid impact, reduces application life.
Summary of the invention
The purpose of this utility model is exactly the defect existing for prior art, provide a kind of simple in structure, reasonable in design, can improve stability and the impact resistance of drilling tool, can improve the abrasion resistance of centralizer body, be convenient for changing, can improve righting effect, be easy to processing, cost is low, buffering erection device for the helicoid hydraulic motor that can increase the service life.
Its technical scheme is: buffering erection device for helicoid hydraulic motor, comprise the connecting ring being flexibly connected with helicoid hydraulic motor housing, the outside of described connecting ring is provided with centralizer body, described centralizer body and connecting ring coaxially arrange, the inner circumferential surface of described centralizer body is provided with a plurality of spring holddown grooves, the external peripheral surface of described connecting ring is provided with a plurality of spring link slots corresponding with spring holddown groove, in the buffering cavity that described spring holddown groove and spring link slot form, be fixed with buffer spring, the outer circumference surface of described centralizer body is provided with many arc wiper blocks, between adjacent two arc wiper blocks, form spiral stream guidance groove, in described spiral stream guidance groove, be provided with the back-up block consistent with arc wiper block height, described arc wiper block is provided with a plurality of cylindrical composite sheets.
Described cylindrical composite sheet is many rows, and setting is staggered respectively.
Described back-up block is acute triangle structure.
The inner circumferential surface of described connecting ring is provided with the connecting thread being connected with helicoid hydraulic motor shell.
The utility model compared with prior art, has the following advantages: simple in structure, reasonable in design, can improve stability and the impact resistance of drilling tool, the abrasion resistance that can improve centralizer body, is convenient for changing, and can improve righting effect, be easy to processing, cost is low, can increase the service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
With reference to Fig. 1, buffering erection device for helicoid hydraulic motor, comprise the connecting ring 1 being flexibly connected with helicoid hydraulic motor housing, the outside of described connecting ring 1 is provided with centralizer body 2, described centralizer body 2 coaxially arranges with connecting ring 1, the inner circumferential surface of described centralizer body 2 is provided with a plurality of spring holddown grooves 3, the external peripheral surface of described connecting ring 1 is provided with a plurality of spring link slots 4 corresponding with spring holddown groove 3, in the buffering cavity that described spring holddown groove 3 and spring link slot 4 form, be fixed with buffer spring 5, the outer circumference surface of described centralizer body 2 is provided with many arc wiper blocks 6, between adjacent two arc wiper blocks 6, form spiral stream guidance groove 7, in described spiral stream guidance groove 7, be provided with the back-up block 8 highly consistent with arc wiper block 6, described arc wiper block 6 is provided with a plurality of cylindrical composite sheets 9.
Described cylindrical composite sheet 9 is many rows, and setting is staggered respectively.Can improve the abrasion resistance of arc wiper block 6 like this, increase the service life.
Described back-up block 8 is acute triangle structure.By back-up block 8, stability in the course of the work can be guaranteed, by acute triangle structure, normally carrying out of chip removal can be guaranteed.
The inner circumferential surface of described connecting ring 1 is provided with the connecting thread being connected with helicoid hydraulic motor shell.By connecting thread installation and removal easy to connect, it is convenient to change.
During use, housing and the centralizer of helicoid hydraulic motor are set to Split type structure, and processing, is not subject to size restrictions separately, easy to process, and can only change centralizer according to the degree of wear, has reduced cost, during use, by lock sleeve, itself and housing are locked; By being set, buffer spring 5 can prevent from producing rigid impact with the borehole wall in the course of the work, thus the application life of assurance drilling tool.By arc wiper block 6 is set, not only can prevent centralizer eccentric wear, improve stability, and reduced cost, extend application life, by cylindrical composite sheet 7 is set on arc wiper block 6, can further improve abrasion resistance; By arranging, back-up block 8 can strengthen and the circumferential point of wall friction, can play good centralizing function and stability, spiral stream guidance groove 7, when not hindering chip removal, can increase the contact area with the borehole wall like this, thereby the stability and the impact resistance that guarantee drilling tool, extended application life.
Claims (4)
1. helicoid hydraulic motor is with cushioning erection device, comprise the connecting ring being flexibly connected with helicoid hydraulic motor housing, it is characterized in that: the outside of described connecting ring is provided with centralizer body, described centralizer body and connecting ring coaxially arrange, the inner circumferential surface of described centralizer body is provided with a plurality of spring holddown grooves, the external peripheral surface of described connecting ring is provided with a plurality of spring link slots corresponding with spring holddown groove, in the buffering cavity that described spring holddown groove and spring link slot form, be fixed with buffer spring, the outer circumference surface of described centralizer body is provided with many arc wiper blocks, between adjacent two arc wiper blocks, form spiral stream guidance groove, in described spiral stream guidance groove, be provided with the back-up block consistent with arc wiper block height, described arc wiper block is provided with a plurality of cylindrical composite sheets.
2. buffering erection device for helicoid hydraulic motor according to claim 1, is characterized in that: described cylindrical composite sheet is many rows, and setting is staggered respectively.
3. buffering erection device for helicoid hydraulic motor according to claim 1, is characterized in that: described back-up block is acute triangle structure.
4. buffering erection device for helicoid hydraulic motor according to claim 1, is characterized in that: the inner circumferential surface of described connecting ring is provided with the connecting thread being connected with helicoid hydraulic motor shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261252.5U CN203822192U (en) | 2014-05-22 | 2014-05-22 | Buffering and centering device for screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261252.5U CN203822192U (en) | 2014-05-22 | 2014-05-22 | Buffering and centering device for screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822192U true CN203822192U (en) | 2014-09-10 |
Family
ID=51477705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261252.5U Expired - Fee Related CN203822192U (en) | 2014-05-22 | 2014-05-22 | Buffering and centering device for screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332661A (en) * | 2015-10-14 | 2016-02-17 | 北京海蓝科技开发有限责任公司 | Flow guide type centralizer and petroleum instrument |
| CN110500041A (en) * | 2019-09-16 | 2019-11-26 | 西南石油大学 | A kind of radially horizontal well self-advancing type jet bit |
-
2014
- 2014-05-22 CN CN201420261252.5U patent/CN203822192U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332661A (en) * | 2015-10-14 | 2016-02-17 | 北京海蓝科技开发有限责任公司 | Flow guide type centralizer and petroleum instrument |
| CN110500041A (en) * | 2019-09-16 | 2019-11-26 | 西南石油大学 | A kind of radially horizontal well self-advancing type jet bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20150522 |
|
| EXPY | Termination of patent right or utility model |