CN106181856B - A kind of dismounting hinge pin method - Google Patents
A kind of dismounting hinge pin method Download PDFInfo
- Publication number
- CN106181856B CN106181856B CN201610541918.6A CN201610541918A CN106181856B CN 106181856 B CN106181856 B CN 106181856B CN 201610541918 A CN201610541918 A CN 201610541918A CN 106181856 B CN106181856 B CN 106181856B
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- CN
- China
- Prior art keywords
- pin
- bearing pin
- hole
- dismounting
- hinge pin
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- 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 1, remove the component of fixed pin shaft；Step 2, a through hole is processed centrally along axis in bearing pin using hot-working method；Step 3, cool down bearing pin；Step 4, bearing pin is split out from pin-and-hole using machinery, fluid pressure type pin pulling out device, or weight impingement method.Bearing pin is only destroyed in the inventive method implementation process, scrapping for connector will not be caused, also do not interfere with the precision of pin-and-hole, secondary matching requirements can be met.Furthermore the present invention is applied under a variety of environment, the dismounting of diversified forms bearing pin.The inventive method operating process is simple, and convenient disassembly, 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 is mostly interference, interference fits.More using pressure assembling, cold charge or hot charging etc. during assembling
Mode, due to the elastic deformation of material, the contact between bearing pin and pin-and-hole is larger.Due to being sold 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 to dismantle bearing pin
Waste time and energy.
At present, method for dismounting mainly has following three kinds：（1）Directly hit using machinery, fluid pressure type pin pulling out device, or weight
Method is split out.（2）Fall whole bearing pin using machining process drilling or boring.（3）Oil cylinder or structural member are destroyed using gas cutting etc.
Method split out.First method not only results in structural member stress deformation or even scrapped, and jeopardizes surrounding people's safety, labor
Fatigue resistance is big, and efficiency is very low.The fixation difficulty of second method lathe is big, and machining cost is high.The third method can cause oil
The connector such as cylinder and structural member is scrapped, and disassembly cost is very high.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of dismounting hinge pin method, solve existing
There is in technology the technical problem that removal efficiency is low, cost is high.
In order to solve the above technical problems, the invention provides a kind of dismounting hinge pin method, it is characterized in that, including following step
Suddenly：
Step 1, remove the component of fixed pin shaft；
Step 2, a through hole is processed centrally along axis in bearing pin using hot-working method；
Step 3, cool down bearing pin；
Step 4, bearing pin is split out from pin-and-hole using machinery, fluid pressure type pin pulling out device, or weight impingement method.
Further, the 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 the through hole.
Further, in cooling procedure, cooling medium is injected in through-holes.
Further, the draw ratio scope of the bearing pin is 1 ~ 50.
Compared with prior art, the beneficial effect that is reached of the present invention is：
1）Bearing pin is only destroyed in the inventive method implementation process, scrapping for connector will not be caused, also do not interfere with pin-and-hole
Precision, secondary matching requirements can be met.
2）The present invention is applied under a variety of environment, the dismounting of diversified forms bearing pin, and the draw ratio that is particularly suitable for use in is 1~50
Bearing pin.
3）The inventive method operating process is simple, and convenient disassembly, labor intensity is low, reduces cost of labor, and production efficiency carries
High more than 10 times, cost of dismantling is low.
Brief description of the drawings
Fig. 1 is the structural representation of bearing pin in the 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 present invention processing through hole.
In figure：1st, bearing pin；2nd, connector；3rd, stop washer；4th, round nut；5th, grease nipple, 6, axle bed.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
In the prior art, the structural representation that connector 2 and axle bed 6 are connected by bearing pin 1 is as 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 is interference fitted with pin-and-hole, one end of bearing pin 1 passes through the He of stop washer 3
Round nut 4 is fixed, and the other end is provided with grease nipple 5, and grease nipple 5 is the mouth for filling butter, similar check valve, can be entered 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 shown in Fig. 2 comprising the following steps：
Step 1, remove the component of fixed pin shaft 1；
As described above, the component of fixed pin shaft 1 includes round nut 4, stop washer 3, grease nipple 5, round nut 4 is first removed,
Stop washer 3 is being removed, is finally removing grease nipple 5, the component of fixed pin shaft, which is first removed, can avoid in follow-up unloading process
Damage component.The length of bearing pin 1 is 320mm in the present embodiment, and a diameter of 80mm, the draw ratio of bearing pin is 4.
Step 2, a through hole is processed centrally along axis in bearing pin 1 using hot-working method；
Hot-working method includes but is not limited to the high energy beam perforation such as gas cutting, burning oxygen melting bar, electron beam or laser；Bearing pin 1
In center hot-working via process, pin axis through hole perimeter occur radial thermal expansion caused by compression, destroy bearing pin 1 with
Local corrosion biting point between pin-and-hole, dirt is between the two extruded.The diameter of through hole be generally pin diameter 5% ~
50%, decline on the contrary if greater than 50% efficiency, cost also increases.In the present embodiment, using the oxygen melting bar of burning in pin
A diameter of 20mm through hole, the wherein a diameter of 12mm of oxygen melting bar are worn on axle 1 along center line, length 1800mm, is processed
Pin shaft structure schematic diagram after through hole is as shown in Figure 3.
Step 3, cool down bearing pin 1；
Presence in cooling procedure due to through hole can not only use natural cooling, and water, oil, liquid can also be injected in hole
The cooling mediums such as state gas accelerate its contraction, and draft type auxiliary can also be used to accelerate cooling bearing pin 1, practical operation
In, it is cooled to less than 60 degrees Celsius.Contraction in bearing pin cooling procedure changes the fits kind between bearing pin and pin-and-hole,
Reduce the magnitude of interference or increase fit clearance, bearing pin is easily split out.
Due to the presence of central through hole, thermograde in bearing pin cooling procedure being present, through hole near zone initial temperature is high,
Shrink also fast in cooling procedure, the contraction in these regions drives bearing pin axial surface region rapidly radial contraction.Through hole simultaneously
Presence bearing pin is had enough shrink spaces, i.e., deflection increases.
Step 4, bearing pin 1 is split out from pin-and-hole using machinery, fluid pressure type pin pulling out device, or weight impingement method.
Mechanical, fluid pressure type pin pulling out device can be more convenient to use by through hole on bearing pin to dismantle the pin after cooling
Axle, it can also be dismantled using common methods such as weight impingement method, jack, because abovementioned steps reduce bearing pin and pin
The tightness that hole coordinates, make the pressure born in unloading process smaller, unloading process is safer.
Bearing pin is only destroyed in the inventive method implementation process, scrapping for connector will not be caused, also do not interfere with pin-and-hole
Precision, secondary matching requirements can be met.
Furthermore the present invention be applied to a variety of environment under, the dismounting of diversified forms bearing pin, the draw ratio that is particularly suitable for use in be 1~
50 bearing pin.
The inventive method operating process is simple, and convenient disassembly, labor intensity is low, reduces cost of labor, and production efficiency improves
More than 10 times, cost of dismantling is low.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and modification can also be made, these improvement and modification
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of dismounting hinge pin method, it is characterized in that, comprise the following steps：
Step 1, remove the component of fixed pin shaft；
Step 2, a through hole is processed centrally along axis in bearing pin using hot-working method；
Step 3, cool down bearing pin；
Step 4, bearing pin is split out from pin-and-hole using machinery, fluid pressure type pin pulling out device, or weight impingement method.
2. a kind of dismounting hinge pin method according to claim 1, it is characterized in that, the hot-working method includes gas cutting, combustion
Burn oxygen melting bar, electron beam or laser.
3. a kind of dismounting hinge pin method according to claim 1, it is characterized in that, a diameter of pin diameter of the through hole
5%~50%。
4. a kind of dismounting hinge pin method according to claim 1, it is characterized in that, in cooling procedure, inject in through-holes
Cooling medium.
5. a kind of dismounting hinge pin method according to claim 1, it is characterized in that, the draw ratio scope of the bearing pin for 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 CN106181856A (en) | 2016-12-07 |
| CN106181856B true 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 |
|---|---|
| CN (1) | CN106181856B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109159085B (en) * | 2018-09-30 | 2021-02-26 | 东营仁合石油机械设备有限公司 | Percussion device |
| CN110748552B (en) * | 2019-10-28 | 2021-07-23 | 成都工业学院 | Pivot connecting device and equipment convenient for replacing pivot |
| CN111774675B (en) * | 2020-06-11 | 2021-08-27 | 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 (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080190006A1 (en) * | 2007-02-09 | 2008-08-14 | Jenkins Phillip J | Pin Punch Tool for Firearms |
-
2016
- 2016-07-11 CN CN201610541918.6A patent/CN106181856B/en active Active
Patent Citations (5)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106181856A (en) | 2016-12-07 |
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