CN201922234U - Pin pulling device - Google Patents
Pin pulling device Download PDFInfo
- Publication number
- CN201922234U CN201922234U CN2011200285084U CN201120028508U CN201922234U CN 201922234 U CN201922234 U CN 201922234U CN 2011200285084 U CN2011200285084 U CN 2011200285084U CN 201120028508 U CN201120028508 U CN 201120028508U CN 201922234 U CN201922234 U CN 201922234U
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- CN
- China
- Prior art keywords
- bearing pin
- hydraulic nut
- pin
- pressure
- double
- 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 discloses a pin pulling device. One end of a double-end stud (3) is connected with a pin (2); the other end of the double-end stud (3) is connected with a hydraulic nut (6); a support sleeve (4) positioned between the hydraulic nut (6) and a base (1) is sleeved on the double-end stud (3); and the hydraulic nut (6) is connected with a high-pressure pump by the aid of a high-pressure hose (7). When in operation, the hydraulic nut (6) is pressurized by the high-pressure pump, so that the double-end stud (3) is driven to move upwards, and finally the pin (2) is pulled out of equipment. Therefore, the pin pulling device is time-saving and labor-saving during operation, safe and reliable.
Description
Technical field
The utility model relates to a kind of bearing pin driver-extractor.
Background technology
At present, the wire drawing hole, dismounting general using bearing pin end of colliery silo shearer and development machine bearing pin, after drawing hammer to screw, employing adopt drawing to draw the mode of hammer that bearing pin is pulled down, but under most conditions since coal mine under service clearance narrow and small, utilize conventional instrument to be difficult to play effect, and because the fan of coal dust grinds under the coal mine, the local deformation that the long-term squeezing action of water smoke corrosion and bearing pin and lining causes, bearing pin and lining contact jaw cusp place trace protuberance form axial resistance makes bearing pin be difficult to extract, because this all situation, the drop-down difficulty of pulling pin of coal mine is big, time is long, the maintenance time that has seriously postponed coal-winning machine and development machine, incured loss through delay the operating efficiency of coal-winning machine and development machine.
The utility model content
Technical problem to be solved in the utility model provides and a kind ofly not only saves time during bearing pin in dismounting, and is laborsaving, and easy to carry, work safety, bearing pin driver-extractor reliably.
In order to solve the problems of the technologies described above, the bearing pin driver-extractor that the utility model provides, one end of studs is connected with bearing pin, the other end is connected with hydraulic nut, be set with the support set that is between described hydraulic nut and the matrix on the described studs, described hydraulic nut is connected with high-pressure pump by high-pressure hose.
Described high-pressure hose is connected with described high-pressure pump by snap joint.
Described high-pressure pump is a high-pressure hand pump.
Adopt the bearing pin driver-extractor of technique scheme, its operation principle drives studs and bearing pin and moves, and then reach the purpose that bearing pin is extracted from matrix for by high-pressure hand pump hydraulic nut is pressurizeed.Rise when pulling pin spool safe and reliable, laborsaving during joint, and because the down-hole service clearance is narrow and small, the characteristics of utilizing this bearing pin driver-extractor high-pressure hose to be flexible coupling can make service worker find correct position to place high-pressure hand pump bearing pin is dismantled, and rely on high-pressure hand pump and hydraulic nut can obtain to exceed several times even tens times that manually exert oneself easily, reduced the maintenance time of coal-winning machine and development machine, improved to combine and adopted and the operating efficiency of fully mechanized workface, and this apparatus structure is simple, easy to operate.
In sum, the utility model is a kind ofly not only to save time during bearing pin in dismounting, and is laborsaving, and easy to carry, work safety, bearing pin driver-extractor reliably.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, one end of studs 3 is connected with bearing pin 2, the other end is connected with hydraulic nut 6, be set with the support set 4 that is between hydraulic nut 6 and the matrix 1 on the studs 3, high-pressure hose 7 one ends are connected with hydraulic nut 6, and high-pressure hose 7 other ends are connected with high-pressure hand pump 9 by snap joint 8.
Referring to Fig. 1, when design coal machine equipment hinging pin shaft 2, reserve wire drawing hole, routine M30 screwed hole in advance at bearing pin 2 dismounting ends.When the coal machine equipment the down-hole use long-time after, bearing pin 2 with matrix 1 mating surface because little distortion, burn into corrosion, fan situation such as grind when causing the situation that when maintenance, is difficult to bearing pin 2 is pulled down, can adopt in the studs 3 one end precession bearing pins 2 wire drawing holes of elder generation with a regular length M30, again the support set 4 of an inner ring size greater than bearing pin 2 outer rims is enclosed within on the studs 3 by situation shown in Figure 1, then hydraulic nut 6 integral body with M30 are screwed to studs 3 other ends, up to the gap of eliminating between each connector; Shed the plug on the hydraulic nut 6, high-pressure hand pump behind the emptying air 9, hydraulic quick coupler 8 are received on the oil connection 5 of hydraulic nut 6, back and forth pull the handle 10 of high-pressure hand pump 9, to hydraulic nut 6 inner oil cylinder pressurizations, piston is risen, drive studs 3 risings and then drive bearing pin 2 and slowly from matrix, break away from, get loose as mating surface, removable driver-extractor is with drawing hammer with bearing pin 2 whole extracting, do not get loose as mating surface and can install cushion block additional at support set 4 and 1 of matrix and continue to rise as stated above to pull out, and finally reach the purpose of bearing pin 2 dismountings.
Claims (3)
1. bearing pin driver-extractor, it is characterized in that: an end of studs (3) is connected with bearing pin (2), the other end is connected with hydraulic nut (6), be set with the support set (4) that is between described hydraulic nut (6) and the matrix (1) on the described studs (3), described hydraulic nut (6) is connected with high-pressure pump by high-pressure hose (7).
2. bearing pin driver-extractor according to claim 1 is characterized in that: described high-pressure hose (7) is connected with described high-pressure pump by snap joint (8).
3. bearing pin driver-extractor according to claim 1 and 2 is characterized in that: described high-pressure pump is high-pressure hand pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200285084U CN201922234U (en) | 2011-01-27 | 2011-01-27 | Pin pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200285084U CN201922234U (en) | 2011-01-27 | 2011-01-27 | Pin pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201922234U true CN201922234U (en) | 2011-08-10 |
Family
ID=44426103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200285084U Expired - Fee Related CN201922234U (en) | 2011-01-27 | 2011-01-27 | Pin pulling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201922234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415277A (en) * | 2015-11-25 | 2016-03-23 | 无锡巨通矿山机械有限公司 | Disassembling device for connecting pin shaft between rocker arm of coal mining machine and traction box |
| CN107457740A (en) * | 2017-09-14 | 2017-12-12 | 神华集团有限责任公司 | Dismantling device |
-
2011
- 2011-01-27 CN CN2011200285084U patent/CN201922234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415277A (en) * | 2015-11-25 | 2016-03-23 | 无锡巨通矿山机械有限公司 | Disassembling device for connecting pin shaft between rocker arm of coal mining machine and traction box |
| CN107457740A (en) * | 2017-09-14 | 2017-12-12 | 神华集团有限责任公司 | Dismantling device |
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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: 20110810 Termination date: 20150127 |
|
| EXPY | Termination of patent right or utility model |