CN201273329Y - Oil pumping machine crank pin with turnbuckle-screw nut - Google Patents
Oil pumping machine crank pin with turnbuckle-screw nut Download PDFInfo
- Publication number
- CN201273329Y CN201273329Y CNU2008201224480U CN200820122448U CN201273329Y CN 201273329 Y CN201273329 Y CN 201273329Y CN U2008201224480 U CNU2008201224480 U CN U2008201224480U CN 200820122448 U CN200820122448 U CN 200820122448U CN 201273329 Y CN201273329 Y CN 201273329Y
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- CN
- China
- Prior art keywords
- nut
- hand thread
- positive
- crank pin
- negative
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to a crank lever pin of a pumping machine with a positive and a negative buckled nuts, which is applied on a walking beam type pumping machine in an oil field, and mainly comprises a crank lever pin, a positive buckle nut and a negative buckle nut. The crank lever pin is characterized in that a fastening end of the crank lever pin is provided with a positive buckle outer screw, the end portion of the positive buckle outer screw is provided with a negative buckle outer screw, and the big diameter of the negative buckle outer screw is smaller than the small diameter of the positive buckle outer screw. The length of the positive buckle outer screw is 1-5mm thinner than the positive buckle nut. The positive buckle outer screw is provided with a positive buckle nut, and the negative buckle outer screw is provided with the negative buckle nut. The crank lever pin has the advantages of adopting the positive and the negative double nuts to mutually lock, generating enough friction force between the positive and the negative double nuts and the screws of the pumping machine crank lever pin, achieving that the crank lever of the pumping machine is prevented from loosening, and having simple structure and reliable releasing effect and the like.
Description
Technical field
The utility model relates to the oil field machinery oil technical field, and particularly a kind of beam pumping unit is a kind of Crank Pin on Pumping Units that has the turnbuckle nut of beam pumping unit of usefulness.
Background technique
In oil field machinery oil, adopt beam pumping unit usually.Finish by crank pin between the crank of beam pumping unit and the connecting rod and be connected.Crank pin is the vitals of pumping unit running transmitted load.Because pumping unit work loads instability, it is loosening to make that the crank pin hold-doun nut produces back-off; Often need to adjust the running parameter of beam pumping unit or change the crank pin that damages, also can cause the crank pin nut loosening because of personal factor; Deficiency because of crank pin nut self-locking structure also can produce the crank pin nut loosening in addition.The nut of fixed crank pin produces loosening, as untimely discovery, can not timely fastening hold-doun nut, and crank pin can be deviate from, and causes and stops the well production accident, influences the crude oil ordinary production, even can cause the machine accident of turning over.
Chinese patent notice of authorization CN2861596Y provides a kind of " the stepless locking device of Crank Pin on Pumping Units nut thread jacketed type ", solves the insecure problem of crank pin nut anti-looseness method.Structure is: the stepless locking device of this Crank Pin on Pumping Units nut thread jacketed type comprises screw thread chuck, crank pin and capstan nut, capstan nut is connected under the effect of interior hexagonal flush end Cock screw by cylindrical pin with internal thread with the screw thread chuck, and the screw thread chuck is clamped by spherical washer and the taper faced washer outside thread to crank pin by hexagon head screw rod eye bolt and hexagon slotted nut.Played the effect of crank pin nut anti-looseness.
The model utility content
The purpose of this utility model is: a kind of Crank Pin on Pumping Units that has the turnbuckle nut is provided, can realizes the purpose of Crank Pin on Pumping Units nut anti-looseness, and have simple in structurely, relaxation effect is reliable characteristics more.
The technical solution adopted in the utility model is: the Crank Pin on Pumping Units that has the turnbuckle nut, mainly form by crank pin, right-hand thread nut and left-hand thread nut, it is characterized in that: the right-hand thread outside thread is arranged in the fastening end of crank pin, in the externally threaded end of right-hand thread the left-hand thread outside thread is arranged, the externally threaded big footpath of described left-hand thread is less than right-hand thread outside thread path.The externally threaded length of right-hand thread is littler 1～5 millimeter than the thickness of right-hand thread nut.A right-hand thread nut is arranged on the right-hand thread outside thread, a left-hand thread nut is arranged on the left-hand thread outside thread.
For right-hand thread nut and left-hand thread nut are fixed together, further improve relaxation effect, there is the screw of perpendicular end surface in the hole that perpendicular end surface is arranged on the left-hand thread nut on the right-hand thread nut, in the screw of the perpendicular end surface of the vertical end face of left-hand thread nut and right-hand thread nut a hex screw is arranged.Hex screw links together right-hand thread nut and left-hand thread nut.
The beneficial effects of the utility model: the utility model has the Crank Pin on Pumping Units of turnbuckle nut, the method that adopts positive left-hand thread double nut to lock mutually, between positive left-hand thread double nut and Crank Pin on Pumping Units screw thread, produce enough frictional force, realize locking reliably; In addition, positive left-hand thread double nut can be subdued the loosening phenomenon that vibrations bring from different direction.Can realize the purpose of Crank Pin on Pumping Units nut anti-looseness, and have simple in structurely that relaxation effect is more reliable.
Description of drawings
Fig. 1 is the Crank Pin on Pumping Units structural profile schematic representation that the utility model has the turnbuckle nut.
Among the figure, 1. crank pin, 2. right-hand thread nut, 3. left-hand thread nut, 4. crank, 5. hex screw.
Embodiment
Embodiment 1: the Crank Pin on Pumping Units that the utility model is had the turnbuckle nut is described in further detail.
Consult Fig. 1.The utility model has the Crank Pin on Pumping Units of turnbuckle nut, mainly is made up of crank pin 1, right-hand thread nut 2 and left-hand thread nut 3.In the fastening end of crank pin 1 the right-hand thread outside thread is arranged, the externally threaded button-type of right-hand thread is M48, and the externally threaded length of right-hand thread is 35 millimeters.In the externally threaded end of right-hand thread a left-hand thread outside thread is arranged, the externally threaded big footpath of described left-hand thread is less than right-hand thread outside thread path.The externally threaded button-type of left-hand thread is M22 * 2.The externally threaded length of right-hand thread is littler 3 millimeters than the thickness of right-hand thread nut 2, and promptly the thickness of right-hand thread nut 2 is 38 millimeters.
The diameter that perpendicular end surface is arranged on left-hand thread nut 3 is 12 millimeters a through hole, the screw that the M10 of perpendicular end surface is arranged on right-hand thread nut 2, in the screw of the perpendicular end surface of the vertical end face of left-hand thread nut 3 and right-hand thread nut 2, a hex screw 5 is arranged, the model of hex screw 5 is M10, and length is 30 millimeters.Hex screw 5 links together right-hand thread nut 2 and left-hand thread nut 3.
Claims (2)
1, a kind of Crank Pin on Pumping Units that has the turnbuckle nut, mainly form by crank pin (1), right-hand thread nut (2) and left-hand thread nut (3), it is characterized in that: there is the right-hand thread outside thread fastening end at crank pin (1), in the externally threaded end of right-hand thread the left-hand thread outside thread is arranged, the externally threaded big footpath of described left-hand thread is less than right-hand thread outside thread path, the externally threaded length of right-hand thread is littler 1～5 millimeter than the thickness of right-hand thread nut (2), a right-hand thread nut (2) is arranged on the right-hand thread outside thread, a left-hand thread nut (3) is arranged on the left-hand thread outside thread.
2, the Crank Pin on Pumping Units that has the turnbuckle nut according to claim 1, it is characterized in that: the hole that perpendicular end surface is arranged on left-hand thread nut (3), the screw that perpendicular end surface is arranged on right-hand thread nut (2) has a hex screw (5) in the screw of the perpendicular end surface of the vertical end face of left-hand thread nut (3) and right-hand thread nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201224480U CN201273329Y (en) | 2008-09-05 | 2008-09-05 | Oil pumping machine crank pin with turnbuckle-screw nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201224480U CN201273329Y (en) | 2008-09-05 | 2008-09-05 | Oil pumping machine crank pin with turnbuckle-screw nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273329Y true CN201273329Y (en) | 2009-07-15 |
Family
ID=40883676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201224480U Expired - Lifetime CN201273329Y (en) | 2008-09-05 | 2008-09-05 | Oil pumping machine crank pin with turnbuckle-screw nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273329Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345149A (en) * | 2019-08-13 | 2019-10-18 | 东营恒科精密金属有限公司 | One kind is based on information-based intrinsic safety type oil pumping machine crank pin assembly |
-
2008
- 2008-09-05 CN CNU2008201224480U patent/CN201273329Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345149A (en) * | 2019-08-13 | 2019-10-18 | 东营恒科精密金属有限公司 | One kind is based on information-based intrinsic safety type oil pumping machine crank pin assembly |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090715 |