CN203956840U - A kind of crank pin extractor for oil pumping unit - Google Patents
A kind of crank pin extractor for oil pumping unit Download PDFInfo
- Publication number
- CN203956840U CN203956840U CN201420210146.4U CN201420210146U CN203956840U CN 203956840 U CN203956840 U CN 203956840U CN 201420210146 U CN201420210146 U CN 201420210146U CN 203956840 U CN203956840 U CN 203956840U
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- CN
- China
- Prior art keywords
- peg
- walking
- support
- screw rod
- pull bar
- 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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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model relates to a kind of crank pin extractor for oil pumping unit, it comprises support, walking screw rod, peg and two hooks, walking screw rod and support are threaded connection, two hooks are symmetricly set on peg, support is inverse u shape, walking screw rod lower end is connected with pull bar by bearing, pull bar lower end is fixedly connected with peg, peg is " v " type, between the end of peg and pull bar, be provided with lacing wire, on at least one sidewall of support, have the walking groove that penetrates sidewall, in walking groove, be provided with vibration rod, one end of vibration rod is connected with hook outside, the utility model is set to " v " type by peg, and between the end of peg and pull bar, lacing wire is set, improved the intensity of peg, again can be for knocking the vibration rod of hook by walking groove being set and arranging in walking groove, can carry out small knocking to pin, be conducive to extracting of pin.
Description
Technical field
The utility model relates to a kind of oil pumper apparatus for examination and repair, more specifically a kind of crank pin extractor for oil pumping unit.
Background technology
Crank pins is due to connecting crank and connecting rod, do not change for a long time and can cause crank pins rust dead, crank pins and crank corrosion are integrated, during replacing, need operating personnel to use sledgehammer to impact crank pins, because crank pins position is special and corrosion, operate very difficult, and abnormally dangerous.
For the problems referred to above, by two kinds of modes, one is for to eject crank pins, if the patent No. is that 201220229026.x discloses a kind of crank pin replacing and ejects it, it comprises movable bearing base, load-bearing connecting rod, jack, jack bearing plate, the very heavy seat of resisting and delaying, described jack bearing plate is provided with very heavy seat and the adjustment hole of resisting and delaying, jack is arranged on very heavy resisting and delaying on seat, load-bearing connecting rod one end is with adjusting screw and adjusting nut, by adjustment hole, be connected with jack bearing plate, the other end is connected with movable bearing base by pin.Movable bearing base is energy 90-degree rotation centered by pin, during use, by two movable bearing bases centered by pin after 90-degree rotation, by crank pins inner side, pass through crank hole, movable bearing base resets and hangs over crank hole outside, load-bearing connecting rod regulates suitable lateral separation by adjustment hole, radial distance is regulated on adjusting screw by adjusting nut, jack is placed on to very heavy resisting and delaying on seat, ejecting end withstands on crank pins screw thread end and suppresses, crank pins can be taken out like this, but this mode power that first jack is applied to crank pins in operating process is by jack bearing plate, load-bearing connecting rod, pin and movable bearing base are born, for bearing base, bear that over-burden, bearing base is born with pin and is easily damaged, and jack bearing plate is straight plate, easily under the effect of power, be out of shape, weight capacity is poor.
And another kind of mode is that crank pins is extracted, if application number is 201320720398.7 to disclose a kind of crank pin extractor for oil pumping unit, it comprises support, walking screw rod, peg and two hooks, walking screw rod is connected with support, one end of walking screw rod is sleeved on outside peg, two hooks are symmetricly set on peg, described support comprises platform and two inclined-planes that are fixedly connected with platform, described platform is provided with the screwed hole matching with the screw rod of walking, between described two inclined-planes, be fixedly connected with stabilising surface, described stabilising surface is provided with for the through hole through walking screw rod.
Above-mentioned berm width is identical with screwed hole diameter, reduce berm width as far as possible, make the similar and triangle of overall structure, it forms class triangular structure by two inclined-planes and platform, Stability Analysis of Structures, bearing capacity is large, is fixedly connected with stabilising surface between two inclined-planes simultaneously, described stabilising surface is provided with for the through hole through walking screw rod, makes the structure of extractor more stable.It in use, due to peg cross section type linearly, when applying active force, be easily out of shape, cause coming off of hook, can not complete the work of extracting of pin, and because rust is dead, in the process of extracting, draw active force to be difficult to extract on only by screw rod, need to carry out left and right to pin and knock, make pin have small vibrations, above-mentioned patent is all without this function.
It is more than weak point of the prior art.
Summary of the invention
Goal of the invention of the present utility model is, for above weak point of the prior art, to provide a kind of action intensity large, the convenient crank pin extractor for oil pumping unit that pin is knocked.
The utility model is achieved through the following technical solutions:
a kind of crank pin extractor for oil pumping unit, comprise support, walking screw rod, peg and two hooks, walking screw rod and support are threaded connection, two hooks are symmetricly set on peg, described support is inverse u shape, described walking screw rod lower end is connected with pull bar by bearing, described pull bar lower end is fixedly connected with peg, described peg is " v " type, between the end of described peg and pull bar, be provided with lacing wire, on at least one sidewall of described support, have the walking groove that penetrates sidewall, in described walking groove, be provided with vibration rod, one end of described vibration rod is connected with hook outside.
in use, its intensity is large for " V " type peg, and the pulling force providing is high, is conducive to extracting of pin, and " V " type peg be conducive in use hook gather, prevent hook from pin, come off, the effect of lacing wire has further improved the intensity of peg.
above-mentioned hook is semicircle, can better hold the pin that is similarly circular tightly.
the upper end of above-mentioned walking screw rod is provided with nut.
above-mentioned support is equipped with walking groove on two side, in walking groove, between vibration rod and hook, being provided with protective layer, the other end of vibration rod is provided with and knocks piece, protective layer used in the contact area increasing between vibration rod and hook, protection hook.
the beneficial effects of the utility model are: by peg, be set to " v " type, and between the end of peg and pull bar, lacing wire is set, improved the intensity of peg, again can be for knocking the vibration rod of hook by walking groove being set and arranging in walking groove, can carry out small knocking to pin, be conducive to extracting of pin.
accompanying drawing explanation
fig. 1 is the utility model structural representation;
fig. 2 is the utility model side wall construction schematic diagram;
?in figure: 1-support, the 2-screw rod of walking, 3-peg, 4-hook, 5-screw thread, 6-bearing, 7-pull bar, 8-lacing wire, the 9-groove of walking, 10-vibration rod, 11-protective layer, 12-knocks piece, 13-nut.
?the specific embodiment
?below in conjunction with the drawings and specific embodiments, the utility model is described further, so that those skilled in the art can better understand the utility model, but does not therefore limit the utility model.
?a kind of crank pin extractor for oil pumping unit, comprise support 1, walking screw rod 2, peg 3 and two hooks 4, walking screw rod 2 is connected by screw thread 5 with support 1, two hooks 4 are symmetricly set on peg 3, hook 4 is semicircle, described support 1 is inverse u shape, the upper end of described walking screw rod 2 is provided with nut 13, walking screw rod 2 lower ends are connected with pull bar 7 by bearing 6, described pull bar 7 lower ends are fixedly connected with peg 3, described peg 3 is " v " type, between the end of described peg 3 and pull bar 7, be provided with lacing wire 8, on the two side of described support 1, have the walking groove 9 that penetrates sidewall, in described walking groove 9, be provided with vibration rod 10, between vibration rod 10 and hook 4, be provided with protective layer 11, the other end of vibration rod 10 is provided with and knocks piece 12.
Claims (1)
1. a crank pin extractor for oil pumping unit, comprise support, walking screw rod, peg and two hooks, walking screw rod and support are threaded connection, two hooks are symmetricly set on peg, it is characterized in that: described support is inverse u shape, described walking screw rod lower end is connected with pull bar by bearing, the lower end of described pull bar is fixedly connected with peg, described peg is " v " type, between the end of described peg and pull bar, be provided with lacing wire, on at least one sidewall of described support, have the walking groove that penetrates sidewall, in described walking groove, be provided with vibration rod, one end of described vibration rod is connected with hook outside, above-mentioned hook is semicircle, the upper end of above-mentioned walking screw rod is provided with nut, above-mentioned support is equipped with walking groove on two side, between above-mentioned vibration rod and hook, be provided with protective layer, the other end of above-mentioned vibration rod is provided with and knocks piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210146.4U CN203956840U (en) | 2014-04-28 | 2014-04-28 | A kind of crank pin extractor for oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210146.4U CN203956840U (en) | 2014-04-28 | 2014-04-28 | A kind of crank pin extractor for oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203956840U true CN203956840U (en) | 2014-11-26 |
Family
ID=51917475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420210146.4U Expired - Fee Related CN203956840U (en) | 2014-04-28 | 2014-04-28 | A kind of crank pin extractor for oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203956840U (en) |
-
2014
- 2014-04-28 CN CN201420210146.4U patent/CN203956840U/en not_active Expired - Fee Related
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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: 20141126 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |