CN208137878U - A kind of ball transmission seal formula universal shaft for downhole tool - Google Patents
A kind of ball transmission seal formula universal shaft for downhole tool Download PDFInfo
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- CN208137878U CN208137878U CN201820571326.3U CN201820571326U CN208137878U CN 208137878 U CN208137878 U CN 208137878U CN 201820571326 U CN201820571326 U CN 201820571326U CN 208137878 U CN208137878 U CN 208137878U
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- right joint
- transmission
- ball
- transmission shaft
- downhole tool
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Abstract
A kind of ball transmission seal formula universal shaft for downhole tool, including left and right joint, lock sleeve and transmission shaft, the left and right joint is inserted at the both ends of the transmission shaft respectively, there are two the lock sleeves, it is respectively fitted on the transmission shaft and respectively with the left and right joint threaded engagement, lock sleeve inner surface is tapered, there is symmetrical pouring orifice on the left and right joint, several balls are between transmission shaft and left and right joint, and the transmission between transmission shaft and left and right joint is using ball as fulcrum.
Description
Technical field
The utility model relates to a kind of universal shaft more particularly to a kind of ball transmission seal formula for downhole tool are universal
Axis.
Background technique
When power transmission, the power source of some equipment is eccentric motion, needs to transport bias using universal shaft
Turn turns to fixed-axis rotation.Universal shaft requires to use in many places, and when drilling well, common underground screw motor is generated
It is eccentric motion after power, but the power for being transmitted to drill bit needs to be fixed-axis rotation.It thus needs to use universal shaft, still
Situations such as universal shaft used at present in drilling well often has seriously corroded, transmission has some setbacks, is easy to produce failure.
Summary of the invention
In view of the above-mentioned problems, the utility model provides a kind of ball transmission seal formula universal shaft for downhole tool, improve
The case where existing universal shaft seriously corroded, transmission have some setbacks.
A kind of ball transmission seal formula universal shaft for downhole tool, including left and right joint, lock sleeve and transmission shaft, it is described
The left and right joint is inserted at the both ends of transmission shaft respectively, and there are two the lock sleeves, is respectively fitted on the transmission shaft and is divided
Not with the left and right joint threaded engagement, the lock sleeve inner surface is tapered, there is symmetrical pouring orifice on the left and right joint,
Several balls are between transmission shaft and left and right joint, and the transmission between transmission shaft and left and right joint is using ball as fulcrum.
Preferably, it is equipped with O-ring seal on the transmission shaft at the lock sleeve, left and right joint simultaneously.
Preferably, the O-ring seal is nearby equipped with retaining ring.
Preferably, the retaining ring is set between the O-ring seal and the ball.
By being provided with ball in the utility model, guarantees the flexible rotating of transmission shaft, be provided with pouring orifice, pass through oiling
Mouth guarantees that the lubricating oil poured into does not leak outside to lubricating oil is injected between transmission shaft and left and right joint, by O-ring seal, and sets
A retaining ring has been set, has given and supports when transmission shaft 13 rotates.
Detailed description of the invention
Fig. 1 is the ball transmission seal formula universal shaft stereoscopic schematic diagram that one of the utility model is used for downhole tool.
Sectional view of one of the position Fig. 2 the utility model for the ball transmission seal formula universal shaft of downhole tool.
Symbol description：
11 connectors；12 lock sleeves；13 transmission shafts；14 balls；15 retaining rings；16 O-ring seals.
Specific embodiment
It should be pointed out that the noun of locality in present embodiment, for example, front and back, up and down, left and right etc., only basis
Present orientation in attached drawing and the description carried out.
As shown in Figure 1, illustrating for the ball transmission seal formula universal shaft solid for downhole tool a kind of in the utility model
Figure.Including connector 11, lock sleeve 12 and transmission shaft 13.Wherein, there are two connectors 11, universal shaft both ends, lock sleeve are respectively placed in
It is fixed by screw thread and the connector 11 at both ends respectively there are two 12.13 both ends of transmission shaft are each passed through two lock sleeves 12 and divide
It is not fixed on left and right joint 11, two connectors 11 of transmission shaft 13 and left and right are distinguished relatively fixed, and transmission shaft 13 is in upper lower contact
Axial direction on it is fixed and can a small range movement radially.
As shown in Fig. 2, for a kind of sectional view of the ball transmission seal formula universal shaft for downhole tool in the utility model.
From figure 2 it can be seen that the internal diameter of lock sleeve 12 passes through and becomes larger, the purpose designed in this way is to allow and pass
Moving axis 13 has activity space radially.The inner surface opening angle of lock sleeve 12 is set according to actual needs.
Pouring orifice 111 is formed on connector 11, and is symmetric, and there are two pouring orifices 111 for single connector 11.Lubricating oil
Entered by one end pouring orifice 111, the space that connector 11 and lock sleeve 12 and transmission shaft 13 are formed is filled, from other end pouring orifice
111 outflows, then two pouring orifices 111 are closed with plug.Guarantee that the relative motion between transmission shaft 13 and connector 11 is smooth, and energy
It prevents from corroding, forms two half slots close to the position of left and right joint 11 in the side of transmission shaft 13, several balls 14 are placed on
In half slot and be caught in the slot formed inside left and right joint 11, transmission shaft 13 relative to upper lower contact transmission with ball position
For fulcrum.It is equipped with O-ring seal 16, O-ring seal 16 at lock sleeve 12 and left and right joint 11 simultaneously on transmission shaft 13
For preventing lubricating oil from leaking outside.Retaining ring 15 is set near O-ring seal 16, and between O-ring seal 16 and ball 15,
It is supported in rotation to 14 1, ball for transmission shaft 13.
When installation, transmission shaft 13 first puts on two lock sleeves 12, and encloses ball 14, retaining ring 15 and O-ring seal 16, so
Transmission shaft 13 is inserted into two connectors 11 in left and right respectively afterwards, lock sleeve 12 and left and right joint 11 are then passed through into threaded engagement.
By being provided with ball 14 in the utility model, the flexible rotating of guarantee transmission shaft 13 is provided with pouring orifice 111,
Lubricating oil is injected between transmission shaft 13 and left and right joint 11 by pouring orifice 111, guarantees the profit poured by O-ring seal 16
Lubricating oil does not leak outside, and is provided with a retaining ring, gives and supports when transmission shaft 13 rotates.
Present embodiment only specifically elaborates the technical solution of the utility model, and description relatively has in detail
Body, but our protection scope cannot be only limited in specific embodiment of the present utility model, for art technology
Personnel simply replace from present embodiment or obviously change the protection that should belong to the utility model
Range.
Claims (4)
1. a kind of ball transmission seal formula universal shaft for downhole tool, including left and right joint, lock sleeve and transmission shaft, the biography
The left and right joint is inserted at the both ends of moving axis respectively, and there are two the lock sleeves, is respectively fitted on the transmission shaft and is distinguished
With the left and right joint threaded engagement, it is characterised in that：The lock sleeve inner surface is tapered, has on the left and right joint symmetrical
Pouring orifice, several balls are between transmission shaft and left and right joint, and the transmission between transmission shaft and left and right joint is with ball
For fulcrum.
2. a kind of ball transmission seal formula universal shaft for downhole tool as described in claim 1, it is characterised in that：The biography
It is equipped with O-ring seal on moving axis at the lock sleeve, left and right joint simultaneously.
3. a kind of ball transmission seal formula universal shaft for downhole tool as claimed in claim 2, it is characterised in that：The O
Type sealing ring is nearby equipped with retaining ring.
4. a kind of ball transmission seal formula universal shaft for downhole tool as claimed in claim 3, it is characterised in that：The gear
Circle is set between the O-ring seal and the ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820571326.3U CN208137878U (en) | 2018-04-20 | 2018-04-20 | A kind of ball transmission seal formula universal shaft for downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820571326.3U CN208137878U (en) | 2018-04-20 | 2018-04-20 | A kind of ball transmission seal formula universal shaft for downhole tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208137878U true CN208137878U (en) | 2018-11-23 |
Family
ID=64293304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820571326.3U Active CN208137878U (en) | 2018-04-20 | 2018-04-20 | A kind of ball transmission seal formula universal shaft for downhole tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208137878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360334A (en) * | 2020-09-28 | 2021-02-12 | 长春职业技术学院 | Universal shaft sealing sleeve of geological exploration screw drill |
-
2018
- 2018-04-20 CN CN201820571326.3U patent/CN208137878U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360334A (en) * | 2020-09-28 | 2021-02-12 | 长春职业技术学院 | Universal shaft sealing sleeve of geological exploration screw drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 301-103, No. 55, Xili Road, Pudong New Area, Shanghai 200000 Patentee after: Shanghai datan Energy Technology Co.,Ltd. Address before: Room 301-103, No. 55, Xili Road, Pudong New Area, Shanghai 200000 Patentee before: TARTAN ENERGY TECH (SHANGHAI) LTD. |