CN2463564Y - Locking wrist pin for beam-pumping unit - Google Patents
Locking wrist pin for beam-pumping unit Download PDFInfo
- Publication number
- CN2463564Y CN2463564Y CN 00267212 CN00267212U CN2463564Y CN 2463564 Y CN2463564 Y CN 2463564Y CN 00267212 CN00267212 CN 00267212 CN 00267212 U CN00267212 U CN 00267212U CN 2463564 Y CN2463564 Y CN 2463564Y
- Authority
- CN
- China
- Prior art keywords
- crank pin
- pumping unit
- cap
- thread
- nut
- 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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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a disengagement preventive crank pin for oil pumping devices, which is composed of a crank pin shaft, a screw nut, a spare cap, and an opening pin. The crank pin shaft is in the shaft of a stepped shaft; the upper end of the crank pin shaft is in a convex shape; the upper top face is provided with two to three symmetrical inner screw thread holes; the middle is in the shape of a conical body; the lower end is in the shape of a three-grade step body with different diameters, and the upper two grades are outer screw threads with different screw directions; the bottom end is in the shape of a cylinder; a through hole perpendicular to the shaft line of the crank pin is arranged at a position adjacent to the screw threads; an inner screw thread of the screw nut is connected with an outer screw thread at the inner end of the crank pin shaft; an inner screw thread of the spare cap is connected with an outer screw thread at the outer end of the crank pin shaft. The utility model can effectively prevent the crank pins of oil pumping machines from disengagement, avoid the accidents that the oil pumping machines turn down, extend the service lives of the oil pumping machines, and guarantee the safe production of oil fields.
Description
The utility model relates to the scyewed joint tightening technology, particularly is a kind of pumping unit anticreep crank pin.
In field produces, the oil well of using conventional beam-pumping unit production accounts for 95% at present, because the Crank Pin on Pumping Units screw thread is a left side (right side) check configuration, nut, be equipped with cap and deviate from often, cause and turn over the machine accident, cause heavy economic losses, and influence crude oil production to the oil field.
The purpose of this utility model overcomes above-mentioned deficiency exactly, designs a kind of pumping unit anticreep crank pin.
The purpose of this utility model is realized by following technical proposals:
Pumping unit anticreep crank pin, by crank pin, nut, be equipped with cap, cotter pin is formed.It is characterized in that: crank pin is the multidiameter shaft shape, the upper end is " protruding " shape, last end face has 2-3 symmetrical interior threaded hole, and the centre is a cone shape, and the lower end is three grades of not isometrical stepped shafts, last two-stage is respectively the outside thread of different rotation directions, the bottom is cylindrical, and near the screw thread place one through hole perpendicular to crank pin axis is being arranged, and nut inner thread and crank pin inner end outside thread link, be equipped with cap internal thread and its outer end outside thread and link, a cotter pin is arranged in the through hole of bottom.
Nut in the above-mentioned pumping unit anticreep crank pin, the bottom is for having certain thickness cylindrical structural, and top is hexagonal shaped, so that fastening with socket wrench, there is internal thread through hole the centre.
Cap fully in the above-mentioned pumping unit anticreep crank pin is cylindrical, upwards is evenly equipped with 2-3 pawl week, and pawl and crank pin axis have several angle, the length of pawl is higher than cap outerplanar fully, so that fastening with hammer, there is internal thread through hole at the center, be equipped with cap and also can be hexagonal shaped, available socket wrench tightens.
The not isometrical incorgruous external thread structure of crank pin axle head in the above-mentioned pumping unit anticreep crank pin cooperates with corresponding nut, is the fastening anti-skidding bolt of a kind of connection, applicable to major works, machinery etc.
The pumping unit anticreep crank pin that utilizes technique scheme to make can prevent effectively that crank pin from deviating from, and has avoided pumping unit to turn over the machine accident and has taken place, prolong pumping unit working life, an assurance axle neoasozin is produced entirely, has alleviated working strength of workers, has very big economic benefit and social benefit.
Below in conjunction with accompanying drawing the utility model embodiment is further elaborated:
Fig. 1: be that the utility model master looks the broken section structural representation.
Fig. 2: be that crank pin assembly master looks the broken section structural representation.
Fig. 3: be the pumping unit structural representation.
In the accompanying drawing, the 1st, crank pin, the 2nd, nut, the 3rd, be equipped with cap, the 4th, cotter pin, the 5th, cover plate fixing bolt, the 6th, cover plate, the 7th, lock bolt, the 8th, baffle plate, the 9th, bearing, the 10th, housing, the 11st, crank pin assembly, the 12nd, pumping unit, the 13rd, connecting rod, the 14th, clasp, the 15th, attachment bolt, the 16th, crank; A is the locking screw keyhole, and C is a cotter-pin hold, and B is the crank pin load hole.
Installation and application: lay down cover plate fixing bolt (5), take off cover plate (6), lay down lock bolt on the A hole (7), remove baffle plate (8), crank pin (1) is pounded out from bearing (9), change pumping unit anticreep crank pin with hammer.Last pumping unit (12) is gone up when installing, lay down the pumping unit load, stop and tightly brake, lay down four attachment bolts (15) of clasp (14) and crank pin assembly (11) on the connecting rod (13), lay down cap (3) nut (2) fully, take out old crank pin assembly (11) the B hole from crank (16), change new crank pin assembly (11), go up jack panel (2) successively, be equipped with cap (3), from the C hole, insert cotter pin (4), tighten attachment bolt (15), make pumping unit (12) add load, releasing of brake can start pumping unit (12) normal operation input.After the operation (24) hour, stop pumping unit (42), tightening nut (2) and cap (3) again fully ensure safety in production.
Pumping unit anticreep crank pin anticreep principle: cotter pin (4) can prevent that cap (3) is deviate from fully, when nut (2) is loosening when desiring to deviate from, because of its thread rotary orientation with to be equipped with cap (3) thread rotary orientation opposite, nut (2) drives fully, and cap (3) then exceedes tightly, thereby reach self-locking, prevent that crank pin (1) from deviating from, thereby guarantee that pumping unit (12) runs well.
Claims (4)
1, a kind of pumping unit anticreep crank pin, by crank pin, nut, be equipped with cap and cotter pin is formed, it is characterized in that: crank pin is the multidiameter shaft shape, the upper end is " protruding " shape, last end face has 2-3 symmetrical interior threaded hole, the centre is a cone shape, the lower end is three grades of not isometrical stepped shafts, last two-stage is respectively the outside thread of different rotation directions, the bottom is cylindrical, and near the screw thread place one through hole perpendicular to crank pin axis is being arranged, and nut inner thread and crank pin inner end outside thread link, be equipped with cap internal thread and its outer end outside thread and link, a cotter pin is arranged in the through hole of bottom.
2, pumping unit anticreep crank pin according to claim 1 is characterized in that: the nut bottom is for having certain thickness cylindrical structural, and top is hexagonal shaped, and there is internal thread through hole the centre.
3, pumping unit anticreep crank pin according to claim 1, it is characterized in that: be equipped with cap and be evenly equipped with 2-3 pawl around columniform, pawl and crank pin axis have several angle, and the length of pawl is higher than cap outerplanar fully, there is internal thread through hole the centre, is equipped with the cap shell and also can be hexagonal shaped.
4, pumping unit anticreep crank pin according to claim 1 is characterized in that: the not isometrical incorgruous external thread structure of axle head, cooperating with corresponding nut is the fastening anti-skidding bolt of a kind of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267212 CN2463564Y (en) | 2000-12-22 | 2000-12-22 | Locking wrist pin for beam-pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267212 CN2463564Y (en) | 2000-12-22 | 2000-12-22 | Locking wrist pin for beam-pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463564Y true CN2463564Y (en) | 2001-12-05 |
Family
ID=33621089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00267212 Expired - Fee Related CN2463564Y (en) | 2000-12-22 | 2000-12-22 | Locking wrist pin for beam-pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463564Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240506A (en) * | 2015-10-19 | 2016-01-13 | 德瑞石油装备（青岛）有限公司 | Crank connecting structure of pumping unit |
-
2000
- 2000-12-22 CN CN 00267212 patent/CN2463564Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240506A (en) * | 2015-10-19 | 2016-01-13 | 德瑞石油装备（青岛）有限公司 | Crank connecting structure of pumping unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |