CN102528731A - Dismantlement tool for cylinder liners of engines - Google Patents

Dismantlement tool for cylinder liners of engines Download PDF

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Publication number
CN102528731A
CN102528731A CN2012100393389A CN201210039338A CN102528731A CN 102528731 A CN102528731 A CN 102528731A CN 2012100393389 A CN2012100393389 A CN 2012100393389A CN 201210039338 A CN201210039338 A CN 201210039338A CN 102528731 A CN102528731 A CN 102528731A
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CN
China
Prior art keywords
cylinder
pull bar
base plate
bracing frame
scuffing
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.)
Granted
Application number
CN2012100393389A
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Chinese (zh)
Other versions
CN102528731B (en
Inventor
张晓坚
刘克君
谢勇儒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liyu Gas Power Co., Ltd
Original Assignee
DONGGUAN LIYU GAS POWER Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DONGGUAN LIYU GAS POWER Co Ltd filed Critical DONGGUAN LIYU GAS POWER Co Ltd
Priority to CN201210039338.9A priority Critical patent/CN102528731B/en
Publication of CN102528731A publication Critical patent/CN102528731A/en
Application granted granted Critical
Publication of CN102528731B publication Critical patent/CN102528731B/en
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Anticipated expiration legal-status Critical

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  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Abstract

A dismantlement tool for cylinder liners of engines comprises a cylinder drawing bottom plate, a drawbar, a cylinder surface support frame, a cover plate, a drawbar nut and a thrust ball bearing. A square drawbar hole is arranged in the middle of the cylinder drawing bottom plate, a square head is disposed at the bottom end of the drawbar, the length of the cylinder drawing bottom plate is larger than the width thereof, the length of the drawbar hole is larger than the width thereof, the length of the square head is larger than the width thereof, the square head is clamped on the lower bottom surface of the drawbar bottom plate after being embedded into the drawbar hole, the cover plate is fixed to the cylinder surface support frame by bolts, and the cylinder surface support frame and the cover plate are sleeved on the drawbar. When the dismantlement tool is used for dismantling a cylinder liner, the cylinder drawing bottom plate is placed into the cylinder liner via a cylinder liner hole after being tilted, and is clamped on the lower end surface of the cylinder liner, the cylinder surface support frame is placed on a cylinder liner surface of a body of an engine, the drawbar nut is screwed down by a wrench, then the drawbar drives the cylinder liner to move upwards relative to the cylinder surface support frame, and accordingly the cylinder liner is driven to be separated from the body of the engine.

Description

A kind of cylinder sleeve of engine extracting tool
Technical field
The present invention relates to the auto repair technical field, particularly relate to a kind of cylinder sleeve of engine extracting tool.
Background technology
Cylinder sleeve is more important part in engine, and a common engine is behind the certain hour of having worked, and the problem of pulling and cause cylinder sleeve to need to change inevitably wearing and tearing appear or in the cylinder sleeve bore surface.Because the gap between outer wall of cylinder jachet and the body sleeve port is very little; Can produce serious incrustation scale because of service time is long; Belong to tight fit between the O RunddichtringO of twice oil sealing and water shutoff together and the body sleeve port on the cylinder sleeve, can produce big frictional force and cause taking out very difficulty of cylinder sleeve.Rule of thumb, the power of taking out even need to go up the 100Nm moment of torsion that has for some cylinder sleeve than big-block engine (cylinder diameter φ 170).
Summary of the invention
The objective of the invention is to avoid weak point of the prior art and a kind of cylinder sleeve of engine extracting tool is provided, it can easily provide enough strength dismounting cylinder sleeves.
The object of the invention is realized through following technical measures.
A kind of cylinder sleeve of engine extracting tool comprises scuffing of cylinder bore base plate, pull bar, cylinder face bracing frame, cover plate, pull-rod nut and thrust ball bearing; The middle part of said scuffing of cylinder bore base plate offers square tie rod hole; The bottom of said pull bar is provided with square toes; Said scuffing of cylinder bore base plate, tie rod hole and square toes are the structure of length greater than width, and said square toes embed the bottom surface that is connected in said pull bar base plate behind the said tie rod hole; In said cylinder face bracing frame, said cylinder face bracing frame and cover plate are enclosed within said pull bar to said cover plate with bolt; Said thrust ball bearing is installed on pull bar, and between said cylinder face bracing frame and cover plate; The top of said pull bar is provided with external screw thread, and said pull-rod nut threaded engagement is in the external screw thread of said pull bar, and the bottom of said pull-rod nut is connected to the upper surface of said thrust ball bearing.
The outer ring of said cylinder face bracing frame is provided with the cylinder frame, and the internal diameter of said cylinder frame is greater than the external diameter of cylinder sleeve of engine.
The bottom surface of said scuffing of cylinder bore base plate offers the square groove of the square toes that can hold said pull bar, and the length direction of said square groove is perpendicular to the length direction of said tie rod hole.
The two ends of the length direction of the upper bottom surface of said scuffing of cylinder bore base plate are provided with the multistage ladder of symmetry.
Said pull bar base plate and cylinder face bracing frame are axially symmetric structure.
The outline diameter on the face of cylinder, upper end of said pull-rod nut is greater than the outline diameter on the face of cylinder, lower end.
The gap is left in the upper surface of said thrust ball bearing and the bottom surface of cover plate.
There is protruding round platform at said cylinder face bracing frame middle part, and heavy hole is arranged in this round platform, and said thrust ball bearing is arranged in the said heavy hole, and there is through hole at said cover plate middle part, and the upper surface that this through hole is connected to said thrust ball bearing is passed in the lower end of pull-rod nut.
Said cover plate is installed on said round platform.
Said scuffing of cylinder bore base plate is the scuffing of cylinder bore base plate that is processed into through 45 steel after the modulation treatment, and said pull bar is the pull bar that is processed into through 45 steel after the modulation treatment, and said cylinder face bracing frame is the cylinder face bracing frame that is processed into through 45 steel after the modulation treatment.
When adopting the present invention to dismantle cylinder sleeve; Cylinder sleeve is put into through sleeve port in scuffing of cylinder bore base plate inclination back; The scuffing of cylinder bore base plate is stuck in the cylinder sleeve lower surface, and cylinder face bracing frame is placed on the cylinder cap face of engine body, tightens pull-rod nut through spanner; Make pull bar drive cylinder sleeve and move up, break away from engine body thereby drive cylinder sleeve with respect to cylinder face bracing frame.
Description of drawings
Utilize accompanying drawing that the present invention is further specified, but the content in the accompanying drawing does not constitute any restriction of the present invention.
Fig. 1 is the structural representation of one embodiment of the present of invention.
Fig. 2 is the structural representation of another angle of one embodiment of the present of invention.
Fig. 3 is the sketch map that the scuffing of cylinder bore base plate of one embodiment of the present of invention is tilted to put into cylinder sleeve.
Fig. 4 is that one embodiment of the present of invention are fixed in the sketch map in the cylinder sleeve.
Fig. 5 is to use one embodiment of the present of invention cylinder sleeve to be pulled out the sketch map of engine body.
Reference numeral:
Scuffing of cylinder bore base plate 1, tie rod hole 11, bottom surface 12, upper bottom surface 13, ladder 14, square groove 15;
Pull bar 2, square toes 21;
Cylinder face bracing frame 3, round platform 31, heavy hole 32, cylinder frame 33;
Cover plate 4, pull-rod nut 5, thrust ball bearing 6, bolt 7;
Cylinder sleeve 8, engine body 9, sealing ring 10.
The specific embodiment
In conjunction with following examples the present invention is described further.
The cylinder sleeve of engine extracting tool of present embodiment comprises scuffing of cylinder bore base plate 1, pull bar 2, cylinder face bracing frame 3, cover plate 4, pull-rod nut 5 and thrust ball bearing 6 shown in Fig. 1-5; The middle part of said scuffing of cylinder bore base plate 1 offers square tie rod hole 11; The bottom of said pull bar 2 is provided with square toes 21; Said scuffing of cylinder bore base plate 1, tie rod hole 11 and square toes 21 are the structure of length greater than width, and said square toes 21 embed the bottom surface 12 that is connected in said pull bar base plate 1 behind the said tie rod hole 11; Said cover plate 4 usefulness bolts 7 are fixed in said cylinder face bracing frame 3, and said cylinder face bracing frame 3 is enclosed within said pull bar 2 with cover plate 4; Said thrust ball bearing 6 is installed on pull bar 2, and between said cylinder face bracing frame 3 and cover plate 4; The top of said pull bar 2 is provided with external screw thread, and said pull-rod nut 5 threaded engagement are in the external screw thread of said pull bar 2, and the bottom of said pull-rod nut 5 is connected to the upper surface of said thrust ball bearing 6.
The two ends of the length direction of the upper bottom surface 13 of said scuffing of cylinder bore base plate 1 are provided with the multistage ladder 14 of symmetry.
The bottom surface 12 of said scuffing of cylinder bore base plate 1 offers the square groove 15 of the square toes 21 that can hold said pull bar 2, and the length direction of said square groove 15 is perpendicular to the length direction of said tie rod hole 11.
Said pull bar base plate 1 is an axially symmetric structure with cylinder face bracing frame 3.
The outline diameter on the face of cylinder, upper end of said pull-rod nut 5 is greater than the outline diameter on the face of cylinder, lower end.
There is protruding round platform 31 at said cylinder face bracing frame 3 middle parts; Heavy hole 32 is arranged in this round platform 31; Said thrust ball bearing 6 is arranged in the said heavy hole 32, and there is through hole at said cover plate 4 middle parts, and the upper surface that this through hole is connected to said thrust ball bearing 6 is passed in the lower end of pull-rod nut 5.
The outer ring of said cylinder face bracing frame 3 is provided with cylinder frame 33, and the internal diameter of said cylinder frame 33 is greater than the external diameter of cylinder sleeve of engine.
Said cover plate 4 is installed on said round platform 31.
The gap is left in the bottom surface of the upper surface of said thrust ball bearing 6 and cover plate 4.
Said scuffing of cylinder bore base plate 1 is the scuffing of cylinder bore base plate 1 that is processed into through 45 steel after the modulation treatment, and said pull bar 2 is the pull bars 2 that are processed into through 45 steel after the modulation treatment, and said cylinder face bracing frame 3 is the cylinder face bracing frames 3 that are processed into through 45 steel after the modulation treatment.
Design principle of the present invention:
Cylinder sleeve 8 is nested in the engine body 9, on the cylindrical of cylinder sleeve 8, also is provided with three road O RunddichtringOs 10, and cylinder sleeve 8 is a tight fit with engine body 9.
1, scuffing of cylinder bore base plate 1 is to be processed by 45 steel after modifier treatment, and modified purpose is the position increases its intensity (because in use its on stressed bigger), and is processed into multistage ladder 14, can be used for the dismounting of the cylinder sleeve 8 of different cylinder diameters.Bottom surface 12 at scuffing of cylinder bore base plate 1 is processed with square groove 15 (like Fig. 2), is used in use propping up the square toes 21 of pull bar 2, prevents that pull bar 2 is in company with pull-rod nut 5 rotations; The middle part of scuffing of cylinder bore base plate 1 is processed with the tie rod hole 11 that supplier's bar 2 passes through.
2, pull bar 2 also is to be processed by 45 steel after modifier treatment, and the one of which end is processed into rectangular square toes 21, and square toes 21 are assemblied in 15 li of the square grooves of scuffing of cylinder bore base plate 1 during use, and the other end processes external screw thread.
3, cylinder face bracing frame 3 is to be processed by 45 steel after modifier treatment, and it mainly acts on tie-strut 2 on the cylinder cap face that is positioned over engine body 9 when being to use.Process heavy hole 32 in cylinder face bracing frame 3 upper surfaces, be used to assemble thrust ball bearing 6.Use thrust ball bearing 6 to avoid when rotating rod nut 5, producing bigger frictional force because of pull-rod nut 5 directly contacts with cylinder face bracing frame 3 upper surfaces.
4, cover plate 4 is used to be assemblied in cylinder face bracing frame 3, and its effect is to block the thrust ball bearing 6 that is contained in cylinder face bracing frame 3 holes, prevents that it from dropping out.
5, pull-rod nut 5 is used to be assemblied in pull bar 2, just can cylinder sleeve 8 be pulled out the sleeve port of engine body 9 through rotating rod nut 5.
Assembling of the present invention:
Thrust ball bearing 6 is put in the heavy hole 32 of cylinder face bracing frame 3, covered cover plate 4, and with bolt 7 holddown plates 4.There is certain clearance thrust ball bearing 6 upper surfaces and cover plate 4 bottom surfaces, guarantee that thrust ball bearing 6 can rotate flexibly.
The present invention dismantles the course of work of cylinder sleeve 8:
1. pass through sleeve port; Scuffing of cylinder bore base plate 1 is tilted (because of the maximum gauge of scuffing of cylinder bore base plate 1 internal diameter greater than cylinder sleeve 8; Just can put in after having only inclination, like Fig. 3) put sleeve port below into, with the square toes 21 of pull bar 2 after the direction of the tie rod hole 11 at the middle part of scuffing of cylinder bore base plate 1 is passed tie rod hole 11; With pull bar 2 half-twists; Make the square toes 21 of pull bar 2 be stuck in 15 li of the square grooves of scuffing of cylinder bore base plate 1, and then rotation together of pull bar 2 when preventing in use to revolve pull-rod nut 5 leans against the ladder 14 of scuffing of cylinder bore base plate 1 lower surface of cylinder sleeve 8 again.
2. the upper end of pull bar 2 is passed the endoporus of thrust ball bearing 6 on the scuffing of cylinder bore base plate 1; Scuffing of cylinder bore base plate 1 is positioned on the cylinder cap face of engine body 9; Simultaneously with the external screw thread of pull-rod nut 5 rotation sets, and tighten pull-rod nut 5, make the upper surface of pull-rod nut 5 lower surfaces near thrust ball bearing 6 in pull bar 2 upper ends; Strain scuffing of cylinder bore base plate 1, through Rotating with Uniform pull-rod nut 5 cylinder sleeve 8 is pulled out the sleeve port of engine body 9 at last with spanner.Like Fig. 5, when pull bar 2 is pulled to the inwall near cylinder face bracing frame 3 with scuffing of cylinder bore base plate 1, can cylinder sleeve 8 be pulled out.
Because the dismounting cylinder sleeve needs bigger power, so all parts except that thrust ball bearing 6 increase its intensity all through heat treatment in this cover instrument; In use, directly contact the bigger frictional force of generation and increase the difficulty of pulling out cylinder sleeve 8 with cylinder face bracing frame 3 upper surfaces for fear of the lower surface of pull-rod nut 5, the spy increases a thrust ball bearing 6 betwixt.
Should be noted that at last; Above embodiment only is used to technical scheme of the present invention is described but not to the restriction of protection domain of the present invention; Although the present invention has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the essence and the scope of technical scheme of the present invention.

Claims (10)

1. a cylinder sleeve of engine extracting tool is characterized in that: comprise scuffing of cylinder bore base plate, pull bar, cylinder face bracing frame, cover plate, pull-rod nut and thrust ball bearing; The middle part of said scuffing of cylinder bore base plate offers square tie rod hole; The bottom of said pull bar is provided with square toes; Said scuffing of cylinder bore base plate, tie rod hole and square toes are the structure of length greater than width, and said square toes embed the bottom surface that is connected in said pull bar base plate behind the said tie rod hole; In said cylinder face bracing frame, said cylinder face bracing frame and cover plate are enclosed within said pull bar to said cover plate with bolt; Said thrust ball bearing is installed on pull bar, and between said cylinder face bracing frame and cover plate; The top of said pull bar is provided with external screw thread, and said pull-rod nut threaded engagement is in the external screw thread of said pull bar, and the bottom of said pull-rod nut is connected to the upper surface of said thrust ball bearing.
2. cylinder sleeve of engine extracting tool according to claim 1 is characterized in that: the outer ring of said cylinder face bracing frame is provided with the cylinder frame, and the internal diameter of said cylinder frame is greater than the external diameter of cylinder sleeve of engine.
3. cylinder sleeve of engine extracting tool according to claim 1 is characterized in that: the bottom surface of said scuffing of cylinder bore base plate offers the square groove of the square toes that can hold said pull bar, and the length direction of said square groove is perpendicular to the length direction of said tie rod hole.
4. cylinder sleeve of engine extracting tool according to claim 1 is characterized in that: the two ends of the length direction of the upper bottom surface of said scuffing of cylinder bore base plate are provided with the multistage ladder of symmetry.
5. cylinder sleeve of engine extracting tool according to claim 1 is characterized in that: said pull bar base plate and cylinder face bracing frame are axially symmetric structure.
6. cylinder sleeve of engine extracting tool according to claim 1 is characterized in that: the outline diameter on the face of cylinder, upper end of said pull-rod nut is greater than the outline diameter on the face of cylinder, lower end.
7. cylinder sleeve of engine extracting tool according to claim 1 is characterized in that: the gap is left in the upper surface of said thrust ball bearing and the bottom surface of cover plate.
8. cylinder sleeve of engine extracting tool according to claim 1; It is characterized in that: there is protruding round platform at said cylinder face bracing frame middle part; Heavy hole is arranged in this round platform; Said thrust ball bearing is arranged in the said heavy hole, and there is through hole at said cover plate middle part, and the upper surface that this through hole is connected to said thrust ball bearing is passed in the lower end of pull-rod nut.
9. cylinder sleeve of engine extracting tool according to claim 8 is characterized in that: said cover plate is installed on said round platform.
10. according to each described cylinder sleeve of engine extracting tool of claim 1-9; It is characterized in that: said scuffing of cylinder bore base plate is the scuffing of cylinder bore base plate that is processed into through 45 steel after the modulation treatment; Said pull bar is the pull bar that is processed into through 45 steel after the modulation treatment, and said cylinder face bracing frame is the cylinder face bracing frame that is processed into through 45 steel after the modulation treatment.
CN201210039338.9A 2012-02-21 2012-02-21 Engine cylinder liner removal tool Active CN102528731B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210039338.9A CN102528731B (en) 2012-02-21 2012-02-21 Engine cylinder liner removal tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210039338.9A CN102528731B (en) 2012-02-21 2012-02-21 Engine cylinder liner removal tool

Publications (2)

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CN102528731A true CN102528731A (en) 2012-07-04
CN102528731B CN102528731B (en) 2014-10-08

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103317475A (en) * 2013-06-27 2013-09-25 开平市盈光机电科技有限公司 Mechanism for assembling and disassembling bearing of injection molding machine
RU168839U1 (en) * 2015-12-21 2017-02-21 Алексей Валерьевич Шистеев CYLINDER BLOCK HOUSING REMOVER FOR NEW HOLLAND TRACTORS
CN113482907A (en) * 2021-08-25 2021-10-08 黄秀芳 Tool for mounting and dismounting cylinder sleeve flange of drilling pump
CN113635261A (en) * 2021-09-14 2021-11-12 安徽马钢矿业资源集团姑山矿业有限公司 Disassembling tool for conical valve seat of diaphragm pump
CN113894742A (en) * 2021-11-05 2022-01-07 安徽华菱汽车有限公司 Frock is dismantled to spacer sleeve under spark plug
CN116141244A (en) * 2021-11-22 2023-05-23 福建福清核电有限公司 A nuclear power plant emergency diesel engine cylinder liner removal tool
CN116214434A (en) * 2023-03-09 2023-06-06 徐州徐工挖掘机械有限公司 A bearing removal device
CN117140428A (en) * 2023-10-13 2023-12-01 苏州制氧机股份有限公司 Internal expansion sealing cover, inner expansion sealing cover disassembly tooling and disassembly method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341677A (en) * 1941-11-21 1944-02-15 John H Wass Cylinder sleeve tool
US5408733A (en) * 1993-11-01 1995-04-25 Blankenship; Jim D. Cylinder sleeve puller
CN2237524Y (en) * 1995-06-29 1996-10-16 刘光华 Device for pulling cylinder jacket
CN2875716Y (en) * 2006-02-27 2007-03-07 徐州海伦哲工程机械有限公司 Device of assembling composite casing bush
CN201214229Y (en) * 2008-03-01 2009-04-01 无锡职业技术学院 Wet cylinder liner puller
CN201597013U (en) * 2010-02-05 2010-10-06 广西玉柴机器股份有限公司 Engine cylinder liner removal tooling
CN201922406U (en) * 2011-01-12 2011-08-10 颜文彪 Multi-functional puller
CN202428383U (en) * 2012-02-21 2012-09-12 广东力宇新能源科技有限公司 Engine cylinder liner removal tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341677A (en) * 1941-11-21 1944-02-15 John H Wass Cylinder sleeve tool
US5408733A (en) * 1993-11-01 1995-04-25 Blankenship; Jim D. Cylinder sleeve puller
CN2237524Y (en) * 1995-06-29 1996-10-16 刘光华 Device for pulling cylinder jacket
CN2875716Y (en) * 2006-02-27 2007-03-07 徐州海伦哲工程机械有限公司 Device of assembling composite casing bush
CN201214229Y (en) * 2008-03-01 2009-04-01 无锡职业技术学院 Wet cylinder liner puller
CN201597013U (en) * 2010-02-05 2010-10-06 广西玉柴机器股份有限公司 Engine cylinder liner removal tooling
CN201922406U (en) * 2011-01-12 2011-08-10 颜文彪 Multi-functional puller
CN202428383U (en) * 2012-02-21 2012-09-12 广东力宇新能源科技有限公司 Engine cylinder liner removal tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103317475A (en) * 2013-06-27 2013-09-25 开平市盈光机电科技有限公司 Mechanism for assembling and disassembling bearing of injection molding machine
RU168839U1 (en) * 2015-12-21 2017-02-21 Алексей Валерьевич Шистеев CYLINDER BLOCK HOUSING REMOVER FOR NEW HOLLAND TRACTORS
CN113482907A (en) * 2021-08-25 2021-10-08 黄秀芳 Tool for mounting and dismounting cylinder sleeve flange of drilling pump
CN113635261A (en) * 2021-09-14 2021-11-12 安徽马钢矿业资源集团姑山矿业有限公司 Disassembling tool for conical valve seat of diaphragm pump
CN113894742A (en) * 2021-11-05 2022-01-07 安徽华菱汽车有限公司 Frock is dismantled to spacer sleeve under spark plug
CN116141244A (en) * 2021-11-22 2023-05-23 福建福清核电有限公司 A nuclear power plant emergency diesel engine cylinder liner removal tool
CN116214434A (en) * 2023-03-09 2023-06-06 徐州徐工挖掘机械有限公司 A bearing removal device
CN116214434B (en) * 2023-03-09 2025-10-31 徐州徐工挖掘机械有限公司 Bearing dismounting device
CN117140428A (en) * 2023-10-13 2023-12-01 苏州制氧机股份有限公司 Internal expansion sealing cover, inner expansion sealing cover disassembly tooling and disassembly method
CN117140428B (en) * 2023-10-13 2026-02-03 苏州制氧机股份有限公司 Inner diffusion sealing cover, dismounting tool and dismounting method of inner diffusion sealing cover

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Address after: 523935, Guangdong power Amperex Technology Limited, 88 Xin'an Road, East community, Humen Town, Dongguan, Guangdong

Applicant after: Liyu New Energy Science & Technology Co., Ltd.

Address before: 523935, Dongguan City, Guangdong province Humen Town East community Xin'an Road No. 88 Dongguan City Gas Power Co., Ltd.

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Address after: Yuelu District City, Hunan province 410000 Changsha Changsha Hunan high tech Development Zone Lugu Road No. 662 Building No. 155 software

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Address before: 523935, Guangdong power Amperex Technology Limited, 88 Xin'an Road, East community, Humen Town, Dongguan, Guangdong

Patentee before: Liyu New Energy Science & Technology Co., Ltd.