CN201196032Y - Improved anti-falling apparatus for drilling tool transmission shaft - Google Patents
Improved anti-falling apparatus for drilling tool transmission shaft Download PDFInfo
- Publication number
- CN201196032Y CN201196032Y CNU2008200230855U CN200820023085U CN201196032Y CN 201196032 Y CN201196032 Y CN 201196032Y CN U2008200230855 U CNU2008200230855 U CN U2008200230855U CN 200820023085 U CN200820023085 U CN 200820023085U CN 201196032 Y CN201196032 Y CN 201196032Y
- Authority
- CN
- China
- Prior art keywords
- sliding bearing
- transmission shaft
- power transmission
- radially
- carbide sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses an improved trip preventer of a drive shaft of a drilling tool, which comprises the drive shaft and an outer shell body, wherein a lower inner hard alloy bushing bearing and a lower outer bushing bearing are orderly sleeved between the lower portion of the drive shaft and the outer shell body, a thread off prevention nut is sleeved on the drive shaft, which positioned above the lower outer bushing bearing, the outer diameter of the thread off prevention nut is larger than the inner diameter of the lower outer bushing bearing, the outer shell body is fixedly connected with the lower outer bushing bearing, and the lower inner bushing bearing is respectively connected with the drive shaft and the thread off prevention nut. The trip preventer can enable thinner and easy broken parts of the drive shaft to have the thread off prevention function, thereby the safety factor of the use of the drive shaft is increased and the cost is reduced.
Description
Technical field
The utility model relates to a kind of improved drilling tool power transmission shaft anti-drop device of using on the helicoid hydraulic motor.
Background technology
Power transmission shaft is a very important part in the helicoid hydraulic motor, and its lower end major part is directly connecting drill bit, and its effect is that the rotational kinetic energy that screw drilling tool motor produces is passed to drill bit, thereby drilling tool is crept into.It also bears, and all creep into the pressure of usefulness in the drilling process, as the pressure of the drill, and pump pressure, recoil strength, the various pressure such as lateral force of resistance and drill bit are so require very high to the technical data of power transmission shaft.But in the design of power transmission shaft, want to realize that all requirements are difficult to accomplish; At first, its design space is very little; Secondly, the position that has can not be satisfied the requirement of the complicated especially drilling condition condition in down-hole again, so, unavoidably the off-axis phenomenon can appear in use.Because the value of drill bit is very expensive, and very hard; If because of off-axis reason drill bit can not take out, cause and fill out well or disused well, such loss can be very big, can reach nearly 1,000,000 or millions of unit, such thing happens occasionally in drilling well, therefore people adopt and be provided with anti-drop device on power transmission shafts, to prevent because of drive shafts fracture drill bit being fallen the generation of well accident.The mode that interior radially carbide sliding bearing on the power transmission shaft anti-drop device that existing people adopt adopts screwed retaining ring more and is sleeved on power transmission shaft and housing cooperate is not just fallen in the well power transmission shaft and the drill bit that have broken, thereby is played the anticreep effect.But current anti-drop device only can prevent that the power transmission shaft of screwed retaining ring top from disconnecting or play the anticreep effect when threading off, drill bit also just can not fall in the well, but in normal the use, also can occur power transmission shaft sometimes, so just can not prevent that drill bit from falling in the well from disconnecting below the screwed retaining ring.
Summary of the invention
Thereby technical problem to be solved in the utility model has provided a kind of thinner easily broken position of whole power transmission shaft that can make all has the improved drilling tool power transmission shaft anti-drop device that anti-drop function has increased power transmission shaft coefficient safe in utilization.
For solving the problems of the technologies described above, the technical solution of the utility model is: improved drilling tool power transmission shaft anti-drop device, comprise power transmission shaft and shell body, radially carbide sliding bearing and following outer radial carbide sliding bearing in radially being set with down successively between described power transmission shaft bottom and the shell body, be set with screwed retaining ring on the described power transmission shaft, described screwed retaining ring is positioned at described outer radial carbide sliding bearing down top, described screwed retaining ring external diameter is greater than described outer radial carbide sliding bearing internal diameter down, the fixedly connected down outer radial carbide sliding bearing of described shell body, described down in radially carbide sliding bearing fixedly connected respectively with screwed retaining ring with described power transmission shaft.
As a kind of improvement, described down in the fixedly connected screwed retaining ring in carbide sliding bearing upper end radially.
As further improvement, described down in radially the carbide sliding bearing lower end stretch out described outer radial carbide sliding bearing inner chamber down and fixedly connected with the power transmission shaft lower end.
As further improvement, in radially being set with successively between described power transmission shaft top and the shell body radially carbide sliding bearing and top external diameter to carbide sliding bearing, the fixedly connected described power transmission shaft of carbide sliding bearing radially in described go up, in described go up radially the carbide sliding bearing upper end stretch out described shell body inner chamber, and in described the going up radially carbide sliding bearing stretch out the internal diameter of the external diameter of described shell body inner chamber part greater than described shell body.
The drilling tool power transmission shaft anti-drop device of improvement of the technical scheme, since be adopt between power transmission shaft bottom and shell body, radially be set with down successively in radially carbide sliding bearing and following outer radial carbide sliding bearing, under being positioned on the power transmission shaft, be set with screwed retaining ring above the outer radial carbide sliding bearing, the screwed retaining ring external diameter is greater than following outer radial carbide sliding bearing internal diameter, the fixedly connected outer radial carbide sliding bearing down of shell body, down radially carbide sliding bearing fixedly connected respectively with screwed retaining ring with power transmission shaft, and the fixedly connected screwed retaining ring in carbide sliding bearing upper end radially in can adopting down, down radially the carbide sliding bearing lower end stretch out down outer radial carbide sliding bearing inner chamber and fixedly connected with the power transmission shaft lower end, like this, when power transmission shaft when thin position disconnects below screwed retaining ring, because radially carbide sliding bearing lower end and power transmission shaft lower end are fastenedly connected down, and its upper end is connected with screwed retaining ring, so just can will disconnect the power transmission shaft parts by the top of screwed retaining ring retaining at following outer radial carbide sliding bearing, thereby reached the anticreep effect, can make two place's anticreeps on the former power transmission shaft be increased to three place's anticreeps, make the thinner easily broken position of whole power transmission shaft all have the anticreep effect, increased safety factor, reduced cost.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.
Fig. 1 is a drilling tool power transmission shaft anti-drop device structural representation in the prior art;
Fig. 2 is the improved drilling tool power transmission shaft of a utility model anti-drop device structural representation.
The specific embodiment
As shown in Figure 1, drilling tool power transmission shaft anti-drop device of the prior art, outside power transmission shaft 1, be set with shell body 2, in between power transmission shaft 1 top and shell body 2, radially being set with successively radially carbide sliding bearing 8 and top external diameter to carbide sliding bearing 7, carbide sliding bearing 8 fixedly connected power transmission shafts 1 radially in going up, in going up radially carbide sliding bearing 8 upper ends stretch out shell body 2 inner chambers, and in going up radially carbide sliding bearing 8 stretch out the internal diameter of the external diameter of shell body 2 inner chambers part greater than described shell body 2, in can adopting radially carbide sliding bearing 8 stretch out shell body 2 inner chamber upper ends and fixedly connected with power transmission shaft 1 wire connection mode.Radially carbide sliding bearing 3 and following outer radial carbide sliding bearing 4 between power transmission shaft 1 bottom and shell body 2, radially being set with down successively, shell body 2 fixedly connected outer radial carbide sliding bearings 4 down, in down radially carbide sliding bearing 3 and following outer radial carbide sliding bearing 4 and in radially carbide sliding bearing 8 and top external diameter gripping sleeve on power transmission shaft 1 between the carbide sliding bearing 7 are equipped with bearing group 6, screwed retaining ring 5 cooperate with the shaft shoulder that power transmission shaft 1 is provided with will descend in radially carbide sliding bearing 3 be fixedly clamped, and screwed retaining ring 5 external diameters are greater than following outer radial carbide sliding bearing 4 internal diameters, wherein play the anticreep effect be screwed retaining ring 5 and last in carbide sliding bearing 8 radially, when power transmission shaft screwed retaining ring more than 5, after radially carbide sliding bearing ruptures below 8 in going up, owing to screwed retaining ring 5 external diameters block greater than following outer radial carbide sliding bearing 4 internal diameters, like this, power transmission shaft that has broken and drill bit just can not fallen in the well, thereby play the anticreep effect; And when power transmission shaft in last radially carbide sliding bearing disconnect more than 8 or when threading off, disconnected part down will by in last radially carbide sliding bearing 8 keep off on shell body, and can not fall in the well.
As shown in Figure 2, improved drilling tool power transmission shaft anti-drop device, be the improvement of carrying out at as shown in fig. 1 drilling tool power transmission shaft anti-drop device, for adopt screwed retaining ring 5 with time in radially carbide sliding bearing 3 fixedly connected, at present internal diameter is fixedlyed connected with power transmission shaft 1 to carbide sliding bearing 3 together, the fixedly connected screwed retaining ring 5 in the upper end of carbide sliding bearing 3 radially in promptly can adopting down, and outer radial carbide sliding bearing 4 inner chambers under radially stretch out carbide sliding bearing 3 lower ends down, and under radially carbide sliding bearing 3 stretches out down fixedly connected with the stub end of power transmission shaft 1 bottom in the lower end of outer radial carbide sliding bearing 4 inner chambers, like this, when power transmission shaft 1 at screwed retaining ring when thin position disconnects below 5, because radially carbide sliding bearing 3 lower ends and power transmission shaft 1 lower end are fastenedly connected down, and its upper end is connected with screwed retaining ring 5, so just can will disconnect the power transmission shaft parts by the top of screwed retaining ring 5 retainings at following outer radial carbide sliding bearing 4, thereby reached the anticreep effect, can make two place's anticreeps on the former power transmission shaft be increased to three place's anticreeps, make the thinner easily broken position of whole power transmission shaft all have the anticreep effect, increased safety factor, reduced cost.Down radially carbide sliding bearing 3 and screwed retaining ring 5 with time in radially carbide sliding bearing 3 fixedly connected the mode that all can adopt wire connection.
Claims (4)
1. improved drilling tool power transmission shaft anti-drop device, comprise power transmission shaft (1) and shell body (2), radially carbide sliding bearing (3) and following outer radial carbide sliding bearing (4) in radially being set with down successively between described power transmission shaft (1) bottom and the shell body (2), be set with screwed retaining ring (5) on the described power transmission shaft (1), described screwed retaining ring (5) is positioned at described outer radial carbide sliding bearing (4) down top, described screwed retaining ring (5) external diameter is greater than described outer radial carbide sliding bearing (4) internal diameter down, the fixedly connected down outer radial carbide sliding bearing (4) of described shell body (2) is characterized in that: described down in radially carbide sliding bearing (3) fixedly connected respectively with screwed retaining ring (5) with described power transmission shaft (1).
2. improved drilling tool power transmission shaft anti-drop device as claimed in claim 1 is characterized in that: described down in carbide sliding bearing (3) upper end fixedly connected described screwed retaining ring (5) radially.
3. improved drilling tool power transmission shaft anti-drop device as claimed in claim 1 is characterized in that: described down in radially carbide sliding bearing (3) bottom stretch out described outer radial carbide sliding bearing (4) inner chamber down and fixedly connected with power transmission shaft (1) bottom.
4. as claim 1,2 or 3 described improved drilling tool power transmission shaft anti-drop devices, it is characterized in that: in radially being set with successively between described power transmission shaft (1) top and the shell body (2) radially carbide sliding bearing (8) and top external diameter to carbide sliding bearing (7), the fixedly connected described power transmission shaft of carbide sliding bearing (8) (1) radially in described go up, in described go up radially carbide sliding bearing (8) upper end stretch out described shell body (2) inner chamber, and in described the going up radially carbide sliding bearing (8) stretch out the internal diameter of the external diameter of described shell body (2) inner chamber part greater than described shell body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200230855U CN201196032Y (en) | 2008-05-31 | 2008-05-31 | Improved anti-falling apparatus for drilling tool transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200230855U CN201196032Y (en) | 2008-05-31 | 2008-05-31 | Improved anti-falling apparatus for drilling tool transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201196032Y true CN201196032Y (en) | 2009-02-18 |
Family
ID=40415668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200230855U Expired - Fee Related CN201196032Y (en) | 2008-05-31 | 2008-05-31 | Improved anti-falling apparatus for drilling tool transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201196032Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061888A (en) * | 2011-01-04 | 2011-05-18 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| 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 |
-
2008
- 2008-05-31 CN CNU2008200230855U patent/CN201196032Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061888A (en) * | 2011-01-04 | 2011-05-18 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| CN102061888B (en) * | 2011-01-04 | 2013-03-27 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201196032Y (en) | Improved anti-falling apparatus for drilling tool transmission shaft | |
| CN201714293U (en) | Semi-ring transmission shaft assembly of screw drilling tool | |
| US20150267491A1 (en) | Downhole Actuator Device | |
| CN101979818B (en) | Hydraulic reshaper | |
| CN201606017U (en) | Anti-falling device of transmission shaft of screw drill | |
| CN201778649U (en) | Anti-falling screw drill | |
| CN208122754U (en) | Integral type helicoid hydraulic motor | |
| CN107489381B (en) | Overload-proof screw drilling tool | |
| CN203081378U (en) | Hydraulic locking type flexible falling object fishing spear | |
| CN206329272U (en) | A kind of screw drill transmission shaft assembly | |
| CN205218970U (en) | Moment of torsion controlling means | |
| CN202690795U (en) | Universal coupling for electric submersible screw pump | |
| CN204230544U (en) | The charging socket assembly of electric automobile | |
| CN210476819U (en) | Bearing puller of civil aviation generator rotor | |
| CN203266560U (en) | Bearing dismantling tool | |
| CN203166246U (en) | Small connector assembly with rapidly changed insurance tube | |
| CN201567971U (en) | Novel universal shaft for screw drilling tool | |
| CN201562925U (en) | Electric pump cable centering device | |
| CN201002934Y (en) | Anti-wringing device for crane wire rope | |
| CN2931754Y (en) | Down-hole decelerator unit | |
| CN103122945A (en) | Adapter sleeve | |
| CN210619968U (en) | Stress releaser | |
| CN201915827U (en) | Power swivel of drilling platform | |
| CN207500407U (en) | Latent oil reducer gear structure and latent oil retarder | |
| CN201326395Y (en) | Quick latch jack for wire line coring |
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: 20090218 Termination date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |