CN202055752U - Wear-resistant transmission shaft assembly of screw drilling jig - Google Patents
Wear-resistant transmission shaft assembly of screw drilling jig Download PDFInfo
- Publication number
- CN202055752U CN202055752U CN2011201661126U CN201120166112U CN202055752U CN 202055752 U CN202055752 U CN 202055752U CN 2011201661126 U CN2011201661126 U CN 2011201661126U CN 201120166112 U CN201120166112 U CN 201120166112U CN 202055752 U CN202055752 U CN 202055752U
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- wear
- shaft assembly
- transmission shaft
- spindle
- shell
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- Expired - Fee Related
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Abstract
A wear-resistant transmission shaft assembly of a screw drilling jig comprises a spindle, a shell and a thrust bearing. The shell comprises an upper shell and a lower shell, hard alloy powder wear-resistant layers are sprayed on surfaces of inner holes of the upper shell and the lower shell, a hard alloy powder wear-resistant layer is sprayed on a portion, which matches with the lower shell, of the spindle, an inner sleeve is disposed between the upper shell and the spindle, and a hard alloy powder wear-resistant layer is sprayed on the outer surface of the inner sleeve. The transmission shaft assembly realizes surface spraying hard alloy powder treatment for the inner holes of the shells, an outer circle of the spindle and an outer circle of the upper inner sleeve, so that wear-resistant layers are formed and replace sintered radial bearings. The wear-resistant transmission shaft assembly of the screw drilling jig has the following advantages of 1), saving dies and materials for sintering the radial bearings, 2), reducing processing technique procedures and shortening production period, 3), realizing simple spray welding process and high yield, 4), being capable of releasing the space of a transmission shaft and increasing the strength of the spindle, and being particularly applicable to small-sized screw drilling jigs, and 5) being applicable to ultra-large-sized drilling jigs and drilling jigs with special material requirements.
Description
Technical field
The utility model relates to the especially driving-shaft assembly technical field in the helicoid hydraulic motor of petroleum drilling and mining instrument.
Background technology
Driving-shaft assembly is the part of downhole tool helicoid hydraulic motor, its effect is that the moment of torsion that motor produces is passed to drill bit, the bending load and the lateral force that cause when mainly bearing the pressure of the drill, weight and motor planetary motion adopt journal bearing and the work of thrust bearing core component of requiring.
As shown in Figure 1, 2, the existing structure driving-shaft assembly comprises main shaft 12, housing, thrust bearing 6, last journal bearing 5, lower radial bearing 9, goes up hold-down nut 2, packing ring 1, thrust body 7, following hold-down nut 8, the last interior cover 4 of journal bearing 5, last overcoat 3 on it, cover 11 in lower radial bearing 9 following, overcoat 10 all adopts welding or key locate mode pack into housing and main shaft, sintering processing moulding behind the journal bearing employing bonding alloy piece down.Complex manufacturing technology, materials are many and yield rate is low.
The utility model content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of wear-resisting driving-shaft assembly, and its processing technology is simple, materials are few, yield rate is high, cost is low and can discharge the power transmission shaft space to strengthen main axe intensity.
For addressing the above problem, the utility model by the following technical solutions: a kind of wear-resisting driving-shaft assembly comprises main shaft, housing, thrust bearing; Described housing comprises upper shell, lower house, and the bore area of described upper shell, lower house all is coated with the cemented carbide powder wearing layer; The part surface that described main shaft cooperates with lower house is coated with the cemented carbide powder wearing layer; Be provided with interior cover between described upper shell and the main shaft, the external surface of described interior cover is coated with the cemented carbide powder wearing layer.
As further technical scheme of the present utility model:
In this wear-resisting driving-shaft assembly, the upper end of described interior cover is made as top nut, and the top of top nut is provided with packing ring.
In this wear-resisting driving-shaft assembly, be provided with thrust ring between described lower house upper surface and the described thrust bearing, a pair of described thrust bearing of threaded engagement carries out the following hold-down nut of lower limit on the described main shaft.
The beneficial effects of the utility model are: this kind driving-shaft assembly carries out housing endoporus and main shaft cylindrical, last interior cover cylindrical surperficial coated with hard alloy powder and handles, form wearing layer, the journal bearing that replaces sintering, its advantage is as follows: 1) can discharge the power transmission shaft space, strengthen main axe intensity, be particularly useful for the small-sized helicoid hydraulic motor; 2) mould, the body material of saving sintering journal bearing; 3) spray welding process is simple, the yield rate height; 4) reduce processing process, shorten the production cycle; 5) be applicable to super large standard drilling tool and the drilling tool that the specific (special) requirements material is arranged.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further:
Fig. 1 is the prior art constructions schematic diagram,
Fig. 2 is the I place enlarged drawing of Fig. 1,
Fig. 3 is a structural representation of the present utility model,
Fig. 4 is the II place enlarged drawing of Fig. 3,
Among the figure: 1 packing ring, hold-down nut on 2, overcoat on 3, on 4 in cover, journal bearing on 5,6 thrust bearings, 7 thrust rings, 8 times hold-down nuts, 9 lower radial bearings, 10 times overcoats, cover in 11 times, 12 main shafts, 13 upper shells, 14 lower houses, 15 cemented carbide powder wearing layers, 16 interior covers, 17 top nuts.
The specific embodiment
Shown in Fig. 3,4, this wear-resisting driving-shaft assembly comprises main shaft 12, housing, thrust bearing 6; Described housing comprises upper shell 13, lower house 14, and the bore area of described upper shell 13, lower house 14 all is coated with cemented carbide powder wearing layer 15; The part surface that described main shaft 12 cooperates with lower house 14 is coated with cemented carbide powder wearing layer 15; Cover 16 in being provided with between described upper shell 13 and the main shaft 12, the external surface of described interior cover 4 is coated with cemented carbide powder wearing layer 15.The upper end of cover 16 is made as top nut 17 in described, and the top of top nut 17 is provided with packing ring 1.Between described lower house 14 upper surfaces and the described thrust bearing 6 thrust ring 7 is set, a pair of described thrust bearing 6 of threaded engagement carries out the following hold-down nut 8 of lower limit on the described main shaft 12.
The same prior art of all the other technology.
Claims (3)
1. the wear-resisting driving-shaft assembly of helicoid hydraulic motor comprises main shaft, housing, thrust bearing; Described housing comprises upper shell, lower house, it is characterized in that: the bore area of described upper shell, lower house all is coated with the cemented carbide powder wearing layer; The part surface that described main shaft cooperates with lower house is coated with the cemented carbide powder wearing layer; Be provided with interior cover between described upper shell and the main shaft, the external surface of described interior cover is coated with the cemented carbide powder wearing layer.
2. the wear-resisting driving-shaft assembly of a kind of helicoid hydraulic motor according to claim 1 is characterized in that: the upper end of cover is made as top nut in described, and the top of last hold-down nut is provided with packing ring.
3. the wear-resisting driving-shaft assembly of a kind of helicoid hydraulic motor according to claim 1 and 2, it is characterized in that: be provided with thrust ring between described lower house upper surface and the described thrust bearing, a pair of described thrust bearing of threaded engagement carries out the following hold-down nut of lower limit on the described main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201661126U CN202055752U (en) | 2011-05-24 | 2011-05-24 | Wear-resistant transmission shaft assembly of screw drilling jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201661126U CN202055752U (en) | 2011-05-24 | 2011-05-24 | Wear-resistant transmission shaft assembly of screw drilling jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202055752U true CN202055752U (en) | 2011-11-30 |
Family
ID=45015728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201661126U Expired - Fee Related CN202055752U (en) | 2011-05-24 | 2011-05-24 | Wear-resistant transmission shaft assembly of screw drilling jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202055752U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615194A (en) * | 2013-12-03 | 2014-03-05 | 东营博深石油机械有限责任公司 | Oil seal spindle assembly of screw drill |
| CN103899243A (en) * | 2012-12-25 | 2014-07-02 | 中国石油天然气集团公司 | Transmission shaft assembly of screw rod drilling tool |
| CN105507807A (en) * | 2016-01-22 | 2016-04-20 | 江阴东辰钻探设备有限公司 | Abrasion-resistant coating transmission shaft of screw drill |
-
2011
- 2011-05-24 CN CN2011201661126U patent/CN202055752U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899243A (en) * | 2012-12-25 | 2014-07-02 | 中国石油天然气集团公司 | Transmission shaft assembly of screw rod drilling tool |
| CN103899243B (en) * | 2012-12-25 | 2016-03-09 | 中国石油天然气集团公司 | A kind of screw drill transmission shaft assembly |
| CN103615194A (en) * | 2013-12-03 | 2014-03-05 | 东营博深石油机械有限责任公司 | Oil seal spindle assembly of screw drill |
| CN105507807A (en) * | 2016-01-22 | 2016-04-20 | 江阴东辰钻探设备有限公司 | Abrasion-resistant coating transmission shaft of screw drill |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20170524 |