CN110788796A - Bearing lubrication nozzle decomposition method and device - Google Patents
Bearing lubrication nozzle decomposition method and device Download PDFInfo
- Publication number
- CN110788796A CN110788796A CN201911014363.XA CN201911014363A CN110788796A CN 110788796 A CN110788796 A CN 110788796A CN 201911014363 A CN201911014363 A CN 201911014363A CN 110788796 A CN110788796 A CN 110788796A
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- Prior art keywords
- nozzle
- process block
- screw
- adhesive tape
- glue
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- 238000000034 method Methods 0.000 title claims abstract description 82
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 20
- 238000005461 lubrication Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 54
- 239000003292 glue Substances 0.000 claims abstract description 23
- 239000002390 adhesive tape Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
A bearing lubrication nozzle disassembly method comprises the following steps: and step A, sticking and shielding the nozzle by using an adhesive tape, providing a process block, and sticking the bottom surface of the process block with the nozzle. And step B, separating the nozzle from the bearing seat, and detaching the lower nozzle from the casing. And step C, separating the process block from the nozzle, cleaning the residual glue and the degumming agent on the nozzle, and finally detaching the protective adhesive tape on the nozzle to finish the decomposition of the nozzle. The bearing lubrication nozzle decomposition method provided by the invention avoids impact and collision scratch caused by knocking in the existing decomposition process of decomposing the nozzle, eliminates unnecessary scrap generated by deformation of an oil spray hole, and also provides a device for the method, which has the advantages of simple structure, convenience in use, improvement on the decomposition efficiency and reduction in labor intensity by times.
Description
Technical Field
The invention relates to the technical field of aircraft engine assembly, in particular to a method for decomposing a bearing lubrication nozzle in an aircraft engine casing.
Background
Fig. 1a is a schematic partial perspective view of the inside of an aircraft engine casing, fig. 1b is a schematic perspective view of the nozzle of fig. 1a, and fig. 1c is a schematic perspective view of the nozzle of fig. 1b from another perspective. Referring to fig. 1a-1c, in a casing 100 of an aircraft engine, a nozzle 1 for bearing lubrication is assembled, the nozzle 1 comprises an arc-shaped body 11, a mounting seat 12 arranged on the bottom surface of the body 11 and used for connecting an oil circuit, mounting holes 13 for fixed mounting are arranged on the top surface and the bottom surface of the body 11, and an oil injection hole 14 is arranged on the inner side wall of the body 11. During installation, the installation hole 13 is firstly sleeved on a bolt fixedly arranged with the casing 100, then the installation seat 12 of the nozzle 1 is installed on the bearing seat 101 in an inserting mode so as to be communicated with an oil path through the oil supply port 121, and then the nozzle 1 is fixedly connected with the casing 100 through the nut 103. As shown in fig. 1, the nozzle 1 is close to the oil pipe 102, that is, three side surfaces and a bottom surface of the nozzle 1 are wrapped or shielded by the casing 100 and the oil pipe 102, and since the inner side surface of the nozzle 1 (i.e., the side wall provided with the oil spray hole 14) is a straight surface, it is difficult to provide a stress point during the disassembly process, so that the disassembly is difficult.
In addition, as shown in fig. 1b and 1c, since the groove of the mounting seat 12 needs to be provided with a sealing rubber ring, after the mounting seat 12 is assembled in place, the mounting seat is difficult to separate by friction force by using the body 11 due to the interference fit required for sealing.
The only way to disassemble the nozzle 1 from the bearing seat 101 is to use a screw driver to press against the oil spray hole 14 on the inner side surface after removing the nut 103 at the mounting hole 13, and to slightly knock the screw driver, which often requires half to one working day. Due to the fact that the wall of the oil spray hole 14 is thin and poor in strength, even if the oil spray hole is lightly knocked, the decomposition mode is too rough, the oil spray hole 14 is prone to being deformed and scrapped, and the decomposition mode is high in cost, low in efficiency, difficult to operate and high in strength.
Disclosure of Invention
The present invention is directed to a method and apparatus for disassembling a bearing lubrication nozzle to reduce or eliminate the aforementioned problems.
In order to solve the technical problem, the invention provides a bearing lubrication nozzle disassembling method which is used for disassembling a nozzle installed on a bearing seat in a casing, wherein the nozzle comprises an arc-shaped body part and an installation seat arranged on the bottom surface of the body part and used for communicating an oil way, installation holes used for fixed installation are formed in the top surface and the bottom surface of the body part, and an oil injection hole is formed in the inner side wall of the body part. The method comprises the following steps:
and step A, sticking and shielding the nozzle by using an adhesive tape, only reserving an area with the top surface far away from the mounting hole for the exposed surface of the nozzle at the assembling position, not sticking and shielding, cleaning the surface of the top surface of the nozzle which is not blocked by the adhesive tape, coating glue, providing a process block, wherein the top surface of the process block is provided with a threaded hole, and bonding the bottom surface of the process block with the nozzle.
And step B, providing a screw rod, wherein external threads are arranged at two ends of the screw rod, a polished rod is arranged in the middle of the screw rod, a limiting boss is arranged in the middle of the screw rod, a sliding hammer is sleeved on the screw rod, a handle is screwed in to limit the sliding hammer between the limiting boss and the handle, the external thread at the other end is screwed in the threaded hole of the process block, the sliding hammer is repeatedly slid, the nozzle is separated from the bearing seat by using impact force, and the lower nozzle is detached from the casing.
And step C, after the nozzle is disassembled in the step B, the process block is unscrewed from the screw, all exposed surfaces of the nozzle are well covered by adhesive tape in an adhering mode, then the degumming agent is sprayed on an adhering area of the nozzle and the process block, the process block and the nozzle are separated, residual glue and the degumming agent on the nozzle are cleaned, and finally the protective adhesive tape on the nozzle is disassembled to finish the disassembly of the nozzle.
Preferably, in step a, before the nozzle is shielded by using the adhesive tape, dirt and oil stains on the nozzle are removed.
Preferably, in step a, the glue is 495 glue.
Preferably, in step a, when the glue is applied, the glue with a thickness of about 0.5mm is applied only to the connecting area of the nozzle and the process block.
Preferably, in step B, a nut is mounted on the screw before the handle is mounted.
Preferably, in step C, the degelling agent is fanel.
The invention also provides a device for the method, which comprises the process block connected with the nozzle, a screw rod detachably connected with the process block, and the sliding hammer slidably connected with the screw rod, wherein the screw rod is provided with the limiting boss for limiting the stroke of the sliding hammer and a handle detachably connected with the screw rod.
Preferably, a nut is disposed between the handle and the slide hammer.
Preferably, the two ends of the screw rod are provided with external threads, and the middle of the screw rod is a polished rod.
Preferably, the process block is provided in an L-shaped configuration.
The bearing lubrication nozzle decomposition method provided by the invention avoids impact and collision scratch caused by knocking in the existing decomposition process of decomposing the nozzle, eliminates unnecessary scrap generated by deformation of an oil spray hole, and also provides a device for the method, which has the advantages of simple structure, convenience in use, improvement on the decomposition efficiency and reduction in labor intensity by times.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1a is a schematic partial perspective view of an aircraft engine casing;
FIG. 1b is a schematic perspective view of the nozzle of FIG. 1 a;
FIG. 1c is a schematic perspective view of the nozzle of FIG. 1b from another perspective;
FIG. 2 is a schematic perspective view of an apparatus for use in a method for disassembling a bearing lubrication nozzle according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic perspective view of the process block of FIG. 2;
FIG. 4 is a schematic view of the connection between the process block of FIG. 3 and the nozzle of FIG. 1 a;
FIG. 5 is a schematic view of the structure of the connection position of the nozzle of FIG. 4;
fig. 6 is a schematic cross-sectional structural view illustrating the nozzle of fig. 1a disassembled by using the apparatus of fig. 2.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
FIG. 1a is a schematic partial perspective view of an aircraft engine casing; FIG. 1b is a schematic perspective view of the nozzle of FIG. 1 a; FIG. 1c is a schematic perspective view of the nozzle of FIG. 1b from another perspective; FIG. 2 is a schematic perspective view of an apparatus for use in a method for disassembling a bearing lubrication nozzle according to an embodiment of the present invention; FIG. 3 is an enlarged schematic perspective view of the process block of FIG. 2; FIG. 4 is a schematic view of the connection between the process block of FIG. 3 and the nozzle of FIG. 1 a; the shaded areas in the figure identify the areas on the nozzle that are connected to the process block. FIG. 5 is a schematic view of the structure of the connection position of the nozzle of FIG. 4; fig. 6 is a schematic cross-sectional structural view illustrating the nozzle of fig. 1a disassembled by using the apparatus of fig. 2. Referring to fig. 1a to 6, the invention provides a bearing lubrication nozzle disassembling method, which is used for disassembling a nozzle 1 installed on a bearing seat 101 in a casing 100, wherein the nozzle 1 comprises an arc-shaped body 11, an installation seat 12 arranged on the bottom surface of the body 11 for connecting an oil path, the top surface and the bottom surface of the body 11 are both provided with installation holes 13 for fixed installation, and the inner side wall of the body 11 is provided with an oil injection hole 14. The method comprises the following steps:
step A, pasting and shielding the nozzle 1 by using an adhesive tape, only reserving an area with the top surface far away from the mounting hole 13 for the exposed surface of the nozzle 1 at the assembling position, not pasting and shielding, then cleaning and gluing the surface of the top surface of the nozzle 1 which is not shielded by the adhesive tape, providing a process block 2, arranging a threaded hole 21 on the top surface of the process block 2, and adhering the bottom surface of the process block 2 with the nozzle 1.
The invention provides the process block 2 which is bonded with the nozzle 1, and the process block 2 is utilized to provide a stress point, so that the damage to the nozzle 1 possibly caused in the disassembly process after the nut 103 at the mounting hole 13 is removed can be avoided.
Referring to fig. 3 and 4, the process block 2 may be configured in an L-shaped structure, that is, the bottom surface of the process block 2 only needs to have a good fitting area with the top surface of the nozzle 1, and the top surface of the process block 2 may have a larger area, so that the threaded hole 21 having a larger diameter may be provided, thereby providing a larger force-bearing area.
Referring to fig. 5, the connection area of the nozzle 1 and the process block 2 may be disposed in the other half of the top surface of the nozzle 1 away from the mounting hole 13, which ensures better coverage of the mounting hole 13 with an adhesive tape.
Before the nozzle 1 is shielded by using the adhesive tape, dust and oil stains on the nozzle 1 can be removed firstly, so that the bonding shielding effect is ensured. The exposed position of the nozzle 1 in the casing 100, except for the position of the side of the top surface of the nozzle 1 where the area for connecting with the craft block 2 is located, can be adhesively shielded using an adhesive tape, so that the missing glue can be prevented from entering the oil spray hole 14 and the mounting hole 13 during the glue application process.
The glue can be 495 glue, when the glue is applied, excessive glue does not need to be applied (for example, the glue with the thickness of about 0.5mm can be applied only to the connecting area of the nozzle 1 and the craft block 2), other parts in the casing 100 are prevented from being omitted as much as possible, the craft block 3 can be quickly adhered after the glue is applied, and the craft block 3 is pressed for no less than 30 seconds, so that firm adhesion can be ensured.
And step B, providing a screw rod 3, wherein the two ends of the screw rod 3 are provided with external threads, the middle part of the screw rod is provided with a polished rod, the middle part of the screw rod 3 is provided with a limiting boss 31, a sliding hammer 4 is sleeved on the screw rod 3, then a handle 5 is screwed in to limit the sliding hammer 4 between the limiting boss 31 and the handle 5, then the external threads at the other end are screwed in the threaded hole 21 of the process block 2, the sliding hammer 4 is repeatedly slid, the nozzle is separated from the bearing seat by using impact force, and the lower nozzle is detached from the casing.
Referring to fig. 2 and 6, the sliding hammer 4 may be a cylindrical structure, so that the sliding hammer 4 can be held to slide in a polished rod area of the screw 3, and after the screw 3 and the process block 2 are fixedly connected, the sliding hammer 4 is moved to impact the handle 5, so that impact force can be transmitted to a connection part between the nozzle 1 and the bearing seat 101 through the process block 2, and the nozzle 1 can be pulled out.
In order to increase the service life of the handle 5, a nut 6 may be mounted on the screw 3 before the handle 5 is mounted, so that the impact force of the slide hammer 4 is received by the nut 6.
And step C, after the nozzle 1 is disassembled in the step B, the process block 2 is unscrewed from the screw rod 3, all exposed surfaces of the nozzle 1 are adhered and covered by using an adhesive tape, a degumming agent is sprayed on the adhering area of the nozzle 1 and the process block 2, the process block 2 and the nozzle 1 are separated, the residual glue and the degumming agent on the nozzle 1 are cleaned, and finally the protective adhesive tape on the nozzle 1 is disassembled to finish the disassembly of the nozzle 1.
The degumming agent can be FUNEL (energy-rich brand universal rust removal lubricating oil, one of degumming agents), when the degumming agent is sprayed on the bonding area of the nozzle 1 and the process block 2, standing for several seconds, after the degumming agent permeates into the bonding area, the process block 2 can be taken down from the nozzle 1, and then the protective adhesive tape on the nozzle 1 can be detached by cleaning the residual glue and the degumming agent on the nozzle with fine sand paper, so that the decomposition of the nozzle 1 is completed.
By adopting the method, the impact and the collision scratch caused by knocking in the existing decomposition process of the nozzle 1 are avoided, unnecessary scrapping of the oil spray hole 14 caused by deformation is eliminated, the assembly and decomposition cost of the aircraft is greatly reduced, the decomposition efficiency is improved, and the labor intensity is reduced in multiples.
The invention also provides a device for the method, which comprises the process block 2 connected with the nozzle 1, a screw rod 3 detachably connected with the process block 2, a sliding hammer 4 slidably connected with the screw rod 3, wherein the screw rod 3 is provided with the limiting boss 31 for limiting the stroke of the sliding hammer 4 and a handle 5 detachably connected with the screw rod 3.
In a preferred embodiment, a nut 6 is provided between the handle 5 and the slide hammer 4.
In a preferred embodiment, the screw rod 3 is provided with external threads at both ends and a polish rod in the middle.
In a preferred embodiment, the process block 2 is provided in an L-shaped configuration.
The bearing lubrication nozzle decomposition method provided by the invention avoids impact and collision scratch caused by knocking in the decomposition process of the existing decomposition nozzle 1, eliminates unnecessary scrap generated by deformation of the oil spray hole 14, and also provides a device for the method, which has the advantages of simple structure, convenience in use, improvement on the decomposition efficiency and reduction in labor intensity by times.
It should be appreciated by those of skill in the art that while the present invention has been described in terms of several embodiments, not every embodiment includes only a single embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including technical equivalents which are related to the embodiments and which are combined with each other to illustrate the scope of the present invention.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.
Claims (10)
1. A bearing lubrication nozzle decomposition method is used for disassembling a nozzle installed on a bearing seat in a casing and comprises an arc-shaped body and an installation seat arranged on the bottom surface of the body and used for communicating an oil way, installation holes used for fixed installation are formed in the top surface and the bottom surface of the body, and an oil injection hole is formed in the inner side wall of the body. Characterized in that the method comprises the following steps:
and step A, sticking and shielding the nozzle by using an adhesive tape, only reserving an area with the top surface far away from the mounting hole for the exposed surface of the nozzle at the assembling position, not sticking and shielding, cleaning the surface of the top surface of the nozzle which is not blocked by the adhesive tape, coating glue, providing a process block, wherein the top surface of the process block is provided with a threaded hole, and bonding the bottom surface of the process block with the nozzle.
And step B, providing a screw rod, wherein external threads are arranged at two ends of the screw rod, a polished rod is arranged in the middle of the screw rod, a limiting boss is arranged in the middle of the screw rod, a sliding hammer is sleeved on the screw rod, a handle is screwed in to limit the sliding hammer between the limiting boss and the handle, the external thread at the other end is screwed in the threaded hole of the process block, the sliding hammer is repeatedly slid, the nozzle is separated from the bearing seat by using impact force, and the lower nozzle is detached from the casing.
And step C, after the nozzle is disassembled in the step B, the process block is unscrewed from the screw, all exposed surfaces of the nozzle are well covered by adhesive tape in an adhering mode, then the degumming agent is sprayed on an adhering area of the nozzle and the process block, the process block and the nozzle are separated, residual glue and the degumming agent on the nozzle are cleaned, and finally the protective adhesive tape on the nozzle is disassembled to finish the disassembly of the nozzle.
2. The method for disassembling a bearing lubrication nozzle according to claim 1, wherein in step a, before the nozzle is shielded by using an adhesive tape, the nozzle is cleaned of dirt and oil.
3. The method of claim 1, wherein in step a, the glue is 495 glue.
4. The method for disassembling a nozzle for bearing lubrication according to claim 1, wherein in step a, when the glue is applied, the glue is applied only in a thickness of about 0.5mm in a connection area between the nozzle and the block.
5. The method of claim 1, wherein in step B, a nut is mounted on the threaded rod prior to mounting the handle.
6. The method of claim 1, wherein in step C, the debonding agent is fanel.
7. An apparatus for use in the method of claim 1, comprising the block for connection to the nozzle, a screw detachably connected to the block, the ram slidably connected to the screw, the screw being provided with the limit boss for limiting the travel of the ram and a handle detachably connected to the screw.
8. The device of claim 7, wherein a nut is disposed between the handle and the slide hammer.
9. The device of claim 7, wherein the screw is externally threaded at both ends and has a polish rod in the middle.
10. The apparatus of claim 7, wherein the process blocks are arranged in an L-shaped configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014363.XA CN110788796B (en) | 2019-10-24 | 2019-10-24 | Bearing lubrication nozzle decomposition method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014363.XA CN110788796B (en) | 2019-10-24 | 2019-10-24 | Bearing lubrication nozzle decomposition method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110788796A true CN110788796A (en) | 2020-02-14 |
| CN110788796B CN110788796B (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911014363.XA Active CN110788796B (en) | 2019-10-24 | 2019-10-24 | Bearing lubrication nozzle decomposition method and device |
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| Country | Link |
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| CN (1) | CN110788796B (en) |
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|---|---|---|---|---|
| GB1382804A (en) * | 1970-10-28 | 1975-02-05 | Masons General Engs Ltd | Means for fastening a threaded member to the rear face of a sheet |
| US4700033A (en) * | 1985-10-28 | 1987-10-13 | Clark Jr Bernal H | Turn signal lever repair mounting |
| DE19750095A1 (en) * | 1997-11-12 | 1999-05-20 | Itt Mfg Enterprises Inc | Method of detaching sensors (and other glued parts) from a disc and pliers to perform this method |
| DE20308742U1 (en) * | 2003-06-03 | 2003-08-21 | Wang, Kun-Wang, Tainan | Automotive bodywork repair tool has hammer weight sliding along externally-anchored shaft to end-stop |
| CN202010995U (en) * | 2011-03-31 | 2011-10-19 | 潍柴动力股份有限公司 | Tool device used for removing lining from fuel injector aperture |
| CN103240300A (en) * | 2013-05-13 | 2013-08-14 | 李毅 | Automobile pit fast restore method |
| CN105150167A (en) * | 2015-09-25 | 2015-12-16 | 国网山东汶上县供电公司 | Tool special for adhesive tape sealing |
| CN106312922A (en) * | 2016-08-31 | 2017-01-11 | 天津电力机车有限公司 | Dismounting method for steel wire thread sleeve mounted in deep hole |
| CN206598237U (en) * | 2017-02-16 | 2017-10-31 | 中国第一汽车股份有限公司 | Make INT automatic glue application rifle seal assembly tool special for dismounting by oneself |
-
2019
- 2019-10-24 CN CN201911014363.XA patent/CN110788796B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1382804A (en) * | 1970-10-28 | 1975-02-05 | Masons General Engs Ltd | Means for fastening a threaded member to the rear face of a sheet |
| US4700033A (en) * | 1985-10-28 | 1987-10-13 | Clark Jr Bernal H | Turn signal lever repair mounting |
| DE19750095A1 (en) * | 1997-11-12 | 1999-05-20 | Itt Mfg Enterprises Inc | Method of detaching sensors (and other glued parts) from a disc and pliers to perform this method |
| DE20308742U1 (en) * | 2003-06-03 | 2003-08-21 | Wang, Kun-Wang, Tainan | Automotive bodywork repair tool has hammer weight sliding along externally-anchored shaft to end-stop |
| CN202010995U (en) * | 2011-03-31 | 2011-10-19 | 潍柴动力股份有限公司 | Tool device used for removing lining from fuel injector aperture |
| CN103240300A (en) * | 2013-05-13 | 2013-08-14 | 李毅 | Automobile pit fast restore method |
| CN105150167A (en) * | 2015-09-25 | 2015-12-16 | 国网山东汶上县供电公司 | Tool special for adhesive tape sealing |
| CN106312922A (en) * | 2016-08-31 | 2017-01-11 | 天津电力机车有限公司 | Dismounting method for steel wire thread sleeve mounted in deep hole |
| CN107775591A (en) * | 2016-08-31 | 2018-03-09 | 天津电力机车有限公司 | A kind of steel-wire screw-socket method for dismounting of deep hole installation |
| CN206598237U (en) * | 2017-02-16 | 2017-10-31 | 中国第一汽车股份有限公司 | Make INT automatic glue application rifle seal assembly tool special for dismounting by oneself |
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|---|---|
| CN110788796B (en) | 2021-04-13 |
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