CN2070810U - Locking device of roller bit - Google Patents
Locking device of roller bit Download PDFInfo
- Publication number
- CN2070810U CN2070810U CN 90205407 CN90205407U CN2070810U CN 2070810 U CN2070810 U CN 2070810U CN 90205407 CN90205407 CN 90205407 CN 90205407 U CN90205407 U CN 90205407U CN 2070810 U CN2070810 U CN 2070810U
- Authority
- CN
- China
- Prior art keywords
- bearing
- jump ring
- locking device
- utility
- model
- 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 - Lifetime
Links
Abstract
The utility model relates to a locking device of a bit bearing for drilling wells in departments of petroleum, geology. The utility model is characterized in adopting a clamp spring and a small shaft locking structure. The aim of the locking device of a bit bearing lies in increasing the big shaft area with major load bearing by 50%, obviously increasing the service life of the bearings and improving the well drilling efficiency.
Description
The utility model is used for the locking mechanism of oil, geology department drilling well usefulness cone bit bearing.
Existing cone bit bearing locking mechanism is divided into two kinds: first kind of rolling lock locking structure be as (us3922,038), its architectural feature be by the plug pin hole with pack into the locking inside groove of bit bearing of ball, seal with plug pin again.The installation complexity of this structure ball, because gap Da Yi causes the bearing pair axial movement value excessive between the ball, and the area that ball accounts on the bearing macro-axis is big.Second kind of jump ring locking mechanism is as (us4236,764), its architectural feature is gear wheel to be locked on the tooth pawl bearing with elastic circlip on the macro-axis of gear wheel, tooth pawl, this structure easy installation and reliable, the bearing pair axial movement value is little, but jump ring still on the macro-axis of bearing, can not effectively utilize the macro-axis area of tooth pawl bearing.
The utility model is at existing locking mechanism weak point, proposed a kind of on the little axle of bit bearing locking mechanism.
Realization of the present utility model is gear wheel to be locked on the little axle of tooth pawl bearing with jump ring.Earlier jump ring is placed on the little axle of tooth pawl bearing, then jump ring is pressed in the jump ring groove of the little axle of tooth pawl, again gear wheel is contained on the tooth pawl, reach the purpose of locking at last.
The utility model is compared with existing structure to have loaded area and has increased by 50%, has utilized the macro-axis area of bearing fully.Be fit to roll, the two kinds of bearing arrangements that slide have improved the bearing life of drill bit.
Following accompanying drawing has been described embodiment of the present utility model:
Fig. 1 is the schematic diagram of rolling bearing of the present utility model
Fig. 2 is the schematic diagram of sliding bearing of the present utility model
In Fig. 1, Fig. 2, describe the locking of jump ring (1) on the little axle of bit bearing and used, during design, on little (7) of the little axle (6) of tooth pawl bearing (4) and gear wheel (3), be provided with jump ring groove (8), (9).Jump ring (1) is to make with spring steel, on the thrust surface of tooth pawl bearing (4) and gear wheel (3), a thrust plate (2) is arranged, two Planar Compound of thrust plate have wear-resisting or antifriction material, during installation, earlier jump ring (1) and thrust plate (2) are placed on the little axle (6) of tooth pawl bearing (4), pressurization snaps in the jump ring groove (8) of little axle jump ring (1), gear wheel (3) is being assemblied on the tooth pawl bearing (4) and is compressing, and jump ring (1) is locked at gear wheel (3) on the little axle (6) of tooth pawl bearing (4).
Claims (3)
1, a kind of by jump ring (1), gear wheel (3), the cone bit bearing locking mechanism that tooth pawl bearing (4) is formed is characterized in that jump ring (1) is locked on the little axle of bit bearing.
2, locking structure according to claim 1 is characterized in that design and installation has a thrust plate (2) on the abutment surface of gear wheel, tooth pawl.
3, according to being compounded with wear-resisting or antifriction material on claim 1 or the described thrust plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90205407 CN2070810U (en) | 1990-04-23 | 1990-04-23 | Locking device of roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90205407 CN2070810U (en) | 1990-04-23 | 1990-04-23 | Locking device of roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2070810U true CN2070810U (en) | 1991-02-06 |
Family
ID=4886187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90205407 Expired - Lifetime CN2070810U (en) | 1990-04-23 | 1990-04-23 | Locking device of roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2070810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054669C (en) * | 1996-05-16 | 2000-07-19 | 王用顺 | Bit of preventing gear wheel from dropping off |
-
1990
- 1990-04-23 CN CN 90205407 patent/CN2070810U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054669C (en) * | 1996-05-16 | 2000-07-19 | 王用顺 | Bit of preventing gear wheel from dropping off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |