CN106181856A - A kind of dismounting hinge pin method - Google Patents
A kind of dismounting hinge pin method Download PDFInfo
- Publication number
- CN106181856A CN106181856A CN201610541918.6A CN201610541918A CN106181856A CN 106181856 A CN106181856 A CN 106181856A CN 201610541918 A CN201610541918 A CN 201610541918A CN 106181856 A CN106181856 A CN 106181856A
- Authority
- CN
- China
- Prior art keywords
- pin
- bearing pin
- hole
- dismounting
- hinge pin
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/08—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing cotter pins
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a kind of dismounting hinge pin method, belong to machinery maintenance technical field.This method comprises the following steps: step one, removes the assembly of fixed pin shaft；Step 2, uses hot-working method to process a through hole at bearing pin centrally along axis；Step 3, cools down bearing pin；Step 4, utilizes machinery, fluid pressure type pin pulling out device, or bearing pin is split out from pin-and-hole by weight impingement method.The inventive method implementation process is only destroyed bearing pin, does not results in scrapping of connector, also do not interfere with the precision of pin-and-hole so that it is disclosure satisfy that secondary matching requirements.Furthermore, the present invention is applicable under multiple environment, the dismounting of various ways bearing pin.The inventive method operating process is simple, convenient disassembly, and labor intensity is low, reduces cost of labor, and production efficiency improves, and cost of dismantling is low.
Description
Technical field
The present invention relates to a kind of dismounting hinge pin method, belong to machinery maintenance technical field.
Background technology
The connection bearing pin of engineering equipment mostly is interference, interference fits.The assembling of many employings pressure, cold charge or hot charging etc. during assembling
Mode, due to the elastic deformation of material, the contact pressure between bearing pin and pin-and-hole is bigger.Owing to selling during long-time use
Axle stress deformation, connector internal stresses release cause the corrosion of the deformation of hinge hole, bearing pin and connector, when causing dismounting bearing pin
Waste time and energy.
At present, method for dismounting mainly has following three kinds: (1) directly uses machinery, fluid pressure type pin pulling out device, or weight clashes into
Method splits out.(2) machining process drilling or boring is used to fall whole bearing pin.(3) gas cutting etc. is used to destroy oil cylinder or structural member
Method split out.First method not only results in structural member stress deformation and even scraps, and jeopardizes surrounding people's safety, labor
Fatigue resistance is big, and efficiency is the lowest.The fixing difficulty of second method lathe is big, and machining cost is high.The third method can cause oil
Scrapping of the connector such as cylinder and structural member, disassembly cost is the highest.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of dismounting hinge pin method, solve existing
There is the technical problem that removal efficiency in technology is low, cost is high.
For solving above-mentioned technical problem, the invention provides a kind of dismounting hinge pin method, it is characterized in that, including following step
Rapid:
Step one, removes the assembly of fixed pin shaft；
Step 2, uses hot-working method to process a through hole at bearing pin centrally along axis；
Step 3, cools down bearing pin；
Step 4, utilizes machinery, fluid pressure type pin pulling out device, or bearing pin is split out from pin-and-hole by weight impingement method.
Further, described hot-working method includes gas cutting, burning oxygen melting bar, electron beam or laser.
Further, the 5% ~ 50% of a diameter of pin diameter of described through hole.
Further, in cooling procedure, inject cooling medium in through-holes.
Further, the draw ratio scope of described bearing pin is 1 ~ 50.
Compared with prior art, the present invention is reached to provide the benefit that:
1) the inventive method implementation process only destroys bearing pin, do not result in scrapping of connector, also do not interfere with the essence of pin-and-hole
Degree so that it is disclosure satisfy that secondary matching requirements.
2) under the present invention is applicable to multiple environment, the dismounting of various ways bearing pin, being particularly suited for draw ratio is 1～50
Bearing pin.
3) the inventive method operating process is simple, convenient disassembly, and labor intensity is low, reduces cost of labor, and production efficiency carries
High more than 10 times, cost of dismantling is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of bearing pin in prior art；
Fig. 2 is the flow chart of bearing pin method for dismounting of the present invention；
Fig. 3 is the pin shaft structure schematic diagram after the present invention processes through hole.
In figure: 1, bearing pin；2, connector；3, stop washer；4, round nut；5, grease nipple, 6, axle bed.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present invention
Technical scheme, and can not limit the scope of the invention with this.
In prior art, connector 2 and axle bed 6 connect fixing structural representation by bearing pin 1 as it is shown in figure 1, bearing pin 1
It is arranged in the pin-and-hole of connector 2 and axle bed 6, and bearing pin 1 and pin-and-hole interference fit, stop washer 3 He is passed through in one end of bearing pin 1
Round nut 4 is fixed, and the other end is provided with grease nipple 5, and grease nipple 5 is used to fill the mouth of butter, similar check valve, can enter but bad
Go out, be typically assemblied in end part of pin shaft center.
A kind of dismounting hinge pin method of the present invention, as in figure 2 it is shown, comprise the following steps:
Step one, removes the assembly of fixed pin shaft 1；
As it has been described above, the assembly of fixed pin shaft 1 includes round nut 4, stop washer 3, grease nipple 5, first remove round nut 4, tearing open
Except stop washer 3, finally remove grease nipple 5, the assembly of fixed pin shaft is first removed and can avoid follow-up unloading process damages
Assembly.The a length of 320mm of bearing pin 1 in the present embodiment, a diameter of 80mm, the draw ratio of bearing pin is 4.
Step 2, uses hot-working method to process a through hole at bearing pin 1 centrally along axis；
Hot-working method includes but not limited to the high energy beam perforation such as gas cutting, burning oxygen melting bar, electron beam or laser；Bearing pin 1 center
In hot-working via process, there is the compressive stress that radial thermal expansion produces in bearing pin through hole perimeter, destroys bearing pin 1 and pin-and-hole
Between corrosion biting point, local, extruded dirt between the two.The diameter of through hole is generally the 5% ~ 50% of pin diameter, as
Fruit has declined more than 50% efficiency, and cost also increases.In the present embodiment, oxygen melting bar edge on bearing pin 1 of burning is used
Centrage wears the through hole of an a diameter of 20mm, the wherein a diameter of 12mm of oxygen melting bar, and a length of 1800mm, after processing through hole
Pin shaft structure schematic diagram is as shown in Figure 3.
Step 3, cools down bearing pin 1；
Cooling procedure is possible not only to use natural cooling due to the existence of through hole, it is also possible in hole, inject water, oil, liquid gas
The cooling mediums such as body accelerate its contraction, it is also possible to use draft type auxiliary to accelerate cooling bearing pin 1, in practical operation, cold
But to less than 60 degrees Celsius.Contraction in bearing pin cooling procedure changes the fits kind between bearing pin and pin-and-hole, i.e. subtracts
Slight interference amount or increase fit clearance, make bearing pin easily split out.
Due to the existence of central through hole, there is thermograde in bearing pin cooling procedure, through hole near zone initial temperature is high,
Shrinking also fast in cooling procedure, the contraction in these regions drives bearing pin axial surface region radial contraction rapidly.Through hole simultaneously
Existence make bearing pin have enough shrink space, i.e. deflection increases.
Step 4, utilizes machinery, fluid pressure type pin pulling out device, or bearing pin 1 is split out from pin-and-hole by weight impingement method.
The pin after cooling can be dismantled by use machinery, the fluid pressure type pin pulling out device that through hole on bearing pin is convenient
Axle, it would however also be possible to employ the common methods such as weight impingement method, jack are dismantled, owing to abovementioned steps reduces bearing pin and pin
The tightness that hole coordinates, makes the pressure born in unloading process less, and unloading process is safer.
The inventive method implementation process is only destroyed bearing pin, does not results in scrapping of connector, also do not interfere with pin-and-hole
Precision so that it is disclosure satisfy that secondary matching requirements.
Furthermore, the present invention is applicable under multiple environment, the dismounting of various ways bearing pin, be particularly suited for draw ratio be 1～
The bearing pin of 50.
The inventive method operating process is simple, convenient disassembly, and labor intensity is low, reduces cost of labor, and production efficiency improves
More than 10 times, cost of dismantling is low.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and modification, these improve and modification
Also should be regarded as protection scope of the present invention.
Claims (5)
1. a dismounting hinge pin method, is characterized in that, comprises the following steps:
Step one, removes the assembly of fixed pin shaft；
Step 2, uses hot-working method to process a through hole at bearing pin centrally along axis；
Step 3, cools down bearing pin；
Step 4, utilizes machinery, fluid pressure type pin pulling out device, or bearing pin is split out from pin-and-hole by weight impingement method.
A kind of dismounting hinge pin method the most according to claim 1, is characterized in that, described hot-working method includes gas cutting, combustion
Burn oxygen melting bar, electron beam or laser.
A kind of dismounting hinge pin method the most according to claim 1, is characterized in that, a diameter of pin diameter of described through hole
5%~50%。
A kind of dismounting hinge pin method the most according to claim 1, is characterized in that, in cooling procedure, inject in through-holes
Cooling medium.
A kind of dismounting hinge pin method the most according to claim 1, is characterized in that, the draw ratio scope of described bearing pin is 1 ~
50。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610541918.6A CN106181856B (en) | 2016-07-11 | 2016-07-11 | A kind of dismounting hinge pin method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610541918.6A CN106181856B (en) | 2016-07-11 | 2016-07-11 | A kind of dismounting hinge pin method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106181856A true CN106181856A (en) | 2016-12-07 |
| CN106181856B CN106181856B (en) | 2017-12-12 |
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ID=57476266
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610541918.6A Active CN106181856B (en) | 2016-07-11 | 2016-07-11 | A kind of dismounting hinge pin method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106181856B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109159085A (en) * | 2018-09-30 | 2019-01-08 | 东营仁合石油机械设备有限公司 | Percussion device |
| CN110748552A (en) * | 2019-10-28 | 2020-02-04 | 成都工业学院 | Pivot connecting device and equipment convenient for replacing pivot |
| CN111774675A (en) * | 2020-06-11 | 2020-10-16 | 西安航天精密机电研究所 | Screw repairing and disassembling system and method |
| CN114799730A (en) * | 2022-04-15 | 2022-07-29 | 徐州徐工基础工程机械有限公司 | Pin shaft pulling-out method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136155A2 (en) * | 2000-03-16 | 2001-09-26 | Emhart Inc. | Process and device for removing punch rivets from a workpiece |
| US20080190006A1 (en) * | 2007-02-09 | 2008-08-14 | Jenkins Phillip J | Pin Punch Tool for Firearms |
| CN102672669A (en) * | 2012-05-24 | 2012-09-19 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Pin pullout device and application method thereof |
| CN203409712U (en) * | 2013-08-08 | 2014-01-29 | 北京三兴汽车有限公司 | Dismounting device for blind hole tool shaft |
| CN105108448A (en) * | 2015-09-29 | 2015-12-02 | 莱芜钢铁集团有限公司 | Method for disassembling large part pin shaft connection |
| CN105619331A (en) * | 2016-03-30 | 2016-06-01 | 中车四方车辆有限公司 | Demounting tool and method for bogie traction pin sleeve |
-
2016
- 2016-07-11 CN CN201610541918.6A patent/CN106181856B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136155A2 (en) * | 2000-03-16 | 2001-09-26 | Emhart Inc. | Process and device for removing punch rivets from a workpiece |
| US20080190006A1 (en) * | 2007-02-09 | 2008-08-14 | Jenkins Phillip J | Pin Punch Tool for Firearms |
| CN102672669A (en) * | 2012-05-24 | 2012-09-19 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Pin pullout device and application method thereof |
| CN203409712U (en) * | 2013-08-08 | 2014-01-29 | 北京三兴汽车有限公司 | Dismounting device for blind hole tool shaft |
| CN105108448A (en) * | 2015-09-29 | 2015-12-02 | 莱芜钢铁集团有限公司 | Method for disassembling large part pin shaft connection |
| CN105619331A (en) * | 2016-03-30 | 2016-06-01 | 中车四方车辆有限公司 | Demounting tool and method for bogie traction pin sleeve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109159085A (en) * | 2018-09-30 | 2019-01-08 | 东营仁合石油机械设备有限公司 | Percussion device |
| CN110748552A (en) * | 2019-10-28 | 2020-02-04 | 成都工业学院 | Pivot connecting device and equipment convenient for replacing pivot |
| CN111774675A (en) * | 2020-06-11 | 2020-10-16 | 西安航天精密机电研究所 | Screw repairing and disassembling system and method |
| CN114799730A (en) * | 2022-04-15 | 2022-07-29 | 徐州徐工基础工程机械有限公司 | Pin shaft pulling-out method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106181856B (en) | 2017-12-12 |
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