CN202882788U - Rotary sucker rod coupling - Google Patents
Rotary sucker rod coupling Download PDFInfo
- Publication number
- CN202882788U CN202882788U CN 201220547589 CN201220547589U CN202882788U CN 202882788 U CN202882788 U CN 202882788U CN 201220547589 CN201220547589 CN 201220547589 CN 201220547589 U CN201220547589 U CN 201220547589U CN 202882788 U CN202882788 U CN 202882788U
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- CN
- China
- Prior art keywords
- sucker rod
- ball
- link slot
- offers
- rod coupling
- 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
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Abstract
The utility model discloses a rotary sucker rod coupling of the technical field of oil production machinery of an oil field to solve the problems that in the prior art, a sucker rod coupling is unreliable in connection, cannot respond to alternating stress and leads a sucker rod to be prone to breaking. The rotary sucker rod coupling comprises an upper connector and a lower connector. A connecting groove is formed in the lower end face of the upper connector along an axis upwards, the upper end of the lower connector stretches into the connecting groove, at least one circular rolling ball channel is formed in the inner wall of the connecting groove, and a plurality of rolling balls identical in size are arranged inside the rolling ball channel in an interval fit mode. A circular rolling ball groove used for loading the rolling balls is formed in the peripheral side wall of the upper end of the lower connector, and the rolling ball groove and the rolling ball channel are correspondingly arranged. A ball inlet hole is formed in the side wall of the connecting groove, and a plugging piece is arranged inside the ball inlet hole in an interference fit mode. The rotary sucker rod coupling is simple in structure and convenient to assemble, is used for the connection of the sucker rod, can prevent the sucker rod from distorting and deforming due to stress, prevents the sucker rod and a sucker pipe from being worn eccentrically, improves the production of a single well, and reduces the cost of oil production.
Description
Technical field
The utility model relates to a kind of pumping tool in the oil extraction in oil field field of mechanical technique, particularly a kind of rotatable rod collar.
Background technology
Oil pumper is as present oil extraction in oil field capital equipment, and sucker rod then is the critical component of oil pumping system, is used for connecting oil well pump and oil pumper, plays the effect of transferring power, the good and bad stable operation that directly determines whole oil pumping system of the performance of sucker rod.
In the prior art, generally adopt screwed connection between the rod collar.Owing to need firmly tighten during upper button, to produce pretightning force between the joint, cause the dismounting sucker rod to be wasted time and energy.Simultaneously, owing to have dead oil, dope and gas in the female joint, when button, have anti-top power, cause cannot fasten, easily bring out the pumping rod disengaging accident, affect the output of individual well, oil mining is caused greater loss.During oil pumping, oil pumper drives sucker rod and pumps, the body of rod bears to be carried on the tubing string and the descending fluctuating load of conducting oneself with dignity, easily produce alternating stresses and fracture, sucker rod is fallen in the oil well, when salvaging sucker rod, just waste a large amount of manpower and materials like this, affected production efficiency, increased cost of production.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of simple in structure, and easy accessibility, frictional force is little, rotatable rod collar goes slick.
The purpose of this utility model is achieved in that rotatable rod collar, comprise top connection and lower contact, the lower surface of described top connection upwards offers link slot along axis, the upper end of described lower contact stretches in the link slot, the inwall of described link slot offers at least one annular ball channel, and the cooperation of ball channel internal clearance is provided with some equal-sized balls; The upper end outer peripheral sidewall of described lower contact offers be used to the annular ball groove that takes up ball, the corresponding setting with ball channel of described ball groove; The sidewall of described link slot also offers for the hole of bead of advancing that ball is installed, and describedly advances that interference fit is provided with closeouts in the hole of bead.
The utility model inserts the upper end of lower contact in the link slot of top connection first when mounted, after being in place, ball is packed in the ball channel successively from entering the hole of bead, packs in the hole of bead with closeouts at last, has namely finished the assembling of box cupling; Detect between the upper and lower joint and whether can relatively rotate, guarantee rotation flexibly, connect and can come into operation after reliable.Compared with prior art, the beneficial effects of the utility model are: simple in structure, easy to assembly; Top connection is connected ball with lower contact and is connected, and can relatively rotate freely, and has avoided sucker rod because of the pressurized torsional deformation, effectively prevent sucker rod and oil pick-up tube generation eccentric wear, prolong the application life of rod collar, significantly improved the pumping efficiency of enterprise, reduced enterprise's cost for oil production.
For strengthening the bearing capacity of lower contact, avoid upper and lower joint generation slippage, the inwall of described link slot offers three annular ball channels, and what described ball groove was corresponding with ball channel is provided with three, to strengthen the bearing capacity of lower contact, avoid upper and lower joint generation slippage.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1 top connection; 2 lower contacts; 3 balls; 4 closeouts.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, rotatable rod collar, comprise top connection 1 and lower contact 2, the lower surface of top connection 1 upwards offers link slot along axis, the upper end of lower contact 2 stretches in the link slot, the inwall of link slot offers at least one annular ball channel, and the cooperation of ball channel internal clearance is provided with some equal-sized balls 3; The upper end outer peripheral sidewall of lower contact 2 offers be used to the annular ball groove that takes up ball 3, the corresponding setting with ball channel of ball groove; The sidewall of link slot also offers for the hole of bead of advancing that ball is installed, advance that interference fit is provided with closeouts 4 in the hole of bead, for strengthening the bearing capacity of lower contact, avoid upper and lower joint generation slippage, the inwall of link slot preferably offers three annular ball channels, and what the ball groove was corresponding with ball channel is provided with three.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection domain of the present utility model.
Claims (2)
1. rotatable rod collar, comprise top connection and lower contact, the lower surface of described top connection upwards offers link slot along axis, the upper end of described lower contact stretches in the link slot, it is characterized in that, the inwall of described link slot offers at least one annular ball channel, and the cooperation of ball channel internal clearance is provided with some equal-sized balls; The upper end outer peripheral sidewall of described lower contact offers be used to the annular ball groove that takes up ball, the corresponding setting with ball channel of described ball groove; The sidewall of described link slot also offers for the hole of bead of advancing that ball is installed, and describedly advances that interference fit is provided with closeouts in the hole of bead.
2. described rotatable rod collar according to claim 1 is characterized in that the inwall of described link slot offers three annular ball channels, and what described ball groove was corresponding with ball channel is provided with three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547589 CN202882788U (en) | 2012-10-24 | 2012-10-24 | Rotary sucker rod coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547589 CN202882788U (en) | 2012-10-24 | 2012-10-24 | Rotary sucker rod coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882788U true CN202882788U (en) | 2013-04-17 |
Family
ID=48074228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220547589 Expired - Lifetime CN202882788U (en) | 2012-10-24 | 2012-10-24 | Rotary sucker rod coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227963A (en) * | 2020-10-28 | 2021-01-15 | 蒋东 | Anti-torsion sucker rod |
-
2012
- 2012-10-24 CN CN 201220547589 patent/CN202882788U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227963A (en) * | 2020-10-28 | 2021-01-15 | 蒋东 | Anti-torsion sucker rod |
| CN112227963B (en) * | 2020-10-28 | 2022-07-05 | 蒋东 | Anti-torsion sucker rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
|
| CX01 | Expiry of patent term |