CN203081380U - Movable elbow joint - Google Patents
Movable elbow joint Download PDFInfo
- Publication number
- CN203081380U CN203081380U CN 201220707468 CN201220707468U CN203081380U CN 203081380 U CN203081380 U CN 203081380U CN 201220707468 CN201220707468 CN 201220707468 CN 201220707468 U CN201220707468 U CN 201220707468U CN 203081380 U CN203081380 U CN 203081380U
- Authority
- CN
- China
- Prior art keywords
- cam
- ball seat
- pipe nipple
- piston
- barrel body
- 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
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- Earth Drilling (AREA)
Abstract
The utility model relates to the field of well drill auxiliary tools, in particular to a movable elbow joint. The movable elbow joint is characterized by comprising an upper connector, a barrel body, a coupling, a ball seat, a swing short joint, current-limiting plugs, a cam, a cam seat, a square round pin and a lower connector. The upper connector is connected with the barrel body, the coupling and the ball seat in sequence. A ball head of the swing short joint is matched with the ball seat. The other head of the swing short joint is connected with the lower connector. A piston is arranged in the barrel body. A Y-shaped sealing ring is arranged between the piston and the barrel body. The current-limiting plugs are arranged on the upper connector and an inner hole of the piston. The cam seat is arranged in the barrel body. The cam is arranged in the cam seat. The cam is connected with the swing short joint through the square round pin. An O-shaped ring is arranged between the swing short joint and the ball seat. An adjusting washer is arranged between the swing short joint and the lower connector. Compared with the prior art, the movable elbow joint has the advantages of being simple in structure, easy to machine and operate and suitable for catching fish large in obliquity due to the fact that the swing short joint can have an angular variation range of 30 degrees relative to the barrel body.
Description
Technical field
The utility model relates to trepan aid field, particularly a kind of knuckle.
Background technology
Knuckle is used for being used with fishing tool, toggle as human body is flexible, can stretch, can grasp, also recoverable, except catching the very big fish of gradient, can also seek the fish that obstructions such as canopy lid are arranged at top, therefore, when the top of drilling rod, oil pipe or sucker rod etc. falls in bore hole or the large-sized sleeve pipe, during with the dragging for fishing tools such as lance, dipper and can't grasp of routine, the available active toggle grasps, loads such as it can bear and draw, press, turn round, impact.There is the deficiency of inconvenient operation in present knuckle, influences operating efficiency.
Summary of the invention
The purpose of this utility model provides a kind of knuckle, overcomes the deficiencies in the prior art, adopts bulb to cooperate elbow bending formula, makes structure design more reasonable, more convenient operation.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of knuckle, comprise top connection, cylindrical shell, box cupling, ball seat, swing pipe nipple, current limliting plug, cam, cam chair, circumference pin and lower contact, top connection is connected successively with cylindrical shell, box cupling, ball seat, the bulb of swing pipe nipple matches with ball seat, the other end of swing pipe nipple links to each other with lower contact, be provided with piston in the cylindrical shell, be provided with y-shaped ring between piston and the cylindrical shell, top connection and piston inner hole place are provided with the current limliting plug, be provided with cam chair in the cylindrical shell, cam chair is built-in with cam, sells by circumference between cam and the swing pipe nipple to link to each other.
Be provided with O shape circle between described swing pipe nipple and the ball seat.
Be provided with the adjustment packing ring between described swing pipe nipple and the lower contact.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, reasonable in design, be easy to processing and operation, swing pipe nipple cylindrical shell relatively has the angle of 30 ° of scopes to change, and is applicable to and salvages the very big fish of gradient, external diameter is smooth, can avoid being tangled.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure: 1-top connection 2-cylindrical shell 3-current limliting plug 4-Y shape sealing ring 5-piston 6-cam 7-cam chair 8-swing pipe nipple 9-box cupling 10-circumference pin 11-O shape circle 12-ball seat 13-lower contact 14-adjusts packing ring
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further:
See Fig. 1, it is the structural representation of a kind of knuckle embodiment of the utility model, comprise top connection 1, cylindrical shell 2, box cupling 9, ball seat 12, swing pipe nipple 8, current limliting plug 3, cam 6, cam chair 7, circumference pin 10 and lower contact 13, top connection 1 and cylindrical shell 2, box cupling 9, ball seat 12 is threaded successively, the top of top connection 1 is provided with the screw thread that links to each other with drilling rod, the bulb of swing pipe nipple 8 matches with ball seat 12, the other end of swing pipe nipple 8 links to each other with lower contact 13, be provided with piston 5 in the cylindrical shell 2, be provided with y-shaped ring 4 between piston 5 and the cylindrical shell 2, top connection 1 and piston 5 endoporus hydrophthalmia places are provided with current limliting plug 3, be provided with cam chair 7 in the cylindrical shell 2, cam chair 7 is built-in with cam 6, sells 10 by circumference between cam 6 and the swing pipe nipple 8 and links to each other.Be provided with O shape circle 11 between swing pipe nipple 8 and the ball seat 12.Be provided with between swing pipe nipple 8 and the lower contact 13 and adjust packing ring 14.
When this device uses, at first do not throw current limliting plug 3 turn on pump circulation well cleanup, knuckle vertically downward.After dropping into current limliting plug 3, the turn on pump circulation, liquid enters top connection 1 hydrophthalmia and is subjected to the 3 hydrophthalmia throttlings of current limliting plug and produces pressure reduction, and piston 5 moves down compressing cam 6 upper surfaces, and cam 6 makes 8 backswings of swing pipe nipple around the swing of suspension center.The angle of its swing is relevant with pressure reduction, and pressure reduction is high more, and the angle of swing is big more, and when pressure reduction was fixed on a certain value, the angle of swing pipe nipple also correspondingly fixed on the certain value.If fluid pressure difference increases, piston 5 amounts of moving down increase, and pendulum angle also increases.When nature pressure reduction was zero, knuckle can not have any action and vertically downward.If drilling tool slowly rotates, the swing pipe nipple of swing certain angle is also made circular motion thereupon.Be installed in finger that the guide shoe image curvature of the dipper front end of swing on the pipe nipple and equally grab and seek fish, and its is imported in dipper.Drilling tool moves up and down in short distance, but termination of pumping behind the dipper engagement with the fish, and knuckle promptly returns to normal.
Claims (3)
1. knuckle, it is characterized in that, comprise top connection, cylindrical shell, box cupling, ball seat, swing pipe nipple, current limliting plug, cam, cam chair, circumference pin and lower contact, top connection is connected successively with cylindrical shell, box cupling, ball seat, the bulb of swing pipe nipple matches with ball seat, the other end of swing pipe nipple links to each other with lower contact, be provided with piston in the cylindrical shell, be provided with y-shaped ring between piston and the cylindrical shell, top connection and piston inner hole place are provided with the current limliting plug, be provided with cam chair in the cylindrical shell, cam chair is built-in with cam, sells by circumference between cam and the swing pipe nipple to link to each other.
2. a kind of knuckle according to claim 1 is characterized in that, is provided with O shape circle between described swing pipe nipple and the ball seat.
3. a kind of knuckle according to claim 1 and 2 is characterized in that, is provided with the adjustment packing ring between described swing pipe nipple and the lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707468 CN203081380U (en) | 2012-12-20 | 2012-12-20 | Movable elbow joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220707468 CN203081380U (en) | 2012-12-20 | 2012-12-20 | Movable elbow joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081380U true CN203081380U (en) | 2013-07-24 |
Family
ID=48827230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220707468 Expired - Fee Related CN203081380U (en) | 2012-12-20 | 2012-12-20 | Movable elbow joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081380U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895518A (en) * | 2015-06-24 | 2015-09-09 | 长江大学 | Variable elbow joint for increasing diagonal degree |
| CN104912506A (en) * | 2015-06-24 | 2015-09-16 | 长江大学 | Variable bent joint |
-
2012
- 2012-12-20 CN CN 201220707468 patent/CN203081380U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895518A (en) * | 2015-06-24 | 2015-09-09 | 长江大学 | Variable elbow joint for increasing diagonal degree |
| CN104912506A (en) * | 2015-06-24 | 2015-09-16 | 长江大学 | Variable bent joint |
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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 |
Granted publication date: 20130724 Termination date: 20211220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |