CN106002806A - Universal turning tool for electric wrench - Google Patents

Universal turning tool for electric wrench Download PDF

Info

Publication number
CN106002806A
CN106002806A CN201610501791.5A CN201610501791A CN106002806A CN 106002806 A CN106002806 A CN 106002806A CN 201610501791 A CN201610501791 A CN 201610501791A CN 106002806 A CN106002806 A CN 106002806A
Authority
CN
China
Prior art keywords
bevel gear
electric wrench
turning member
driven bevel
band bar
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.)
Pending
Application number
CN201610501791.5A
Other languages
Chinese (zh)
Inventor
武威宇
刘丽轻
丰建军
原会军
范军太
关晋琦
田瑞敏
董雪
田海波
闫姗姗
庞晓武
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.)
State Grid Corp of China SGCC
Jincheng Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Jincheng Power Supply Co of State Grid Shanxi Electric 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 State Grid Corp of China SGCC, Jincheng Power Supply Co of State Grid Shanxi Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201610501791.5A priority Critical patent/CN106002806A/en
Publication of CN106002806A publication Critical patent/CN106002806A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007Connections or joints between tool parts
    • B25B23/0014Screwdriver- or wrench-heads provided with cardan joints or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

The invention provides a universal turning tool for an electric wrench. The tool comprises a first steering part, wherein the first steering part comprises a gear seat, a stripe rod driving bevel gear and a stripe rod driven bevel gear, wherein two gear seat holes vertical to each other are formed in the gear seat, the stripe rod driving bevel gear comprises a driving bevel gear and a driving rod, a first groove is formed in the driving rod, the stripe rod driven bevel gear comprises a driven bevel gear and a driven rod, a second groove is formed in the driven rod, the stripe rod driving bevel gear and the stripe rod driven bevel gear are respectively fixed in the two gear seat holes by two semicircular annular copper sleeves sleeved on the first groove and the second groove in a surrounding way, and the driven bevel gear and the driven bevel gear are meshed in the gear seat. The turning tool is relatively small in volume, can enable the electric wrench to be more applicable to narrow spaces of interval switch cabinets, and can be widely applied to the field of electric wrenches.

Description

Electric wrench universal rotational instrument
Technical field
The present invention relates to electric wrench universal rotational instrument, belong to electric wrench technical field.
Background technology
For a long time, small space fastening or Unscrewed screw be all relatively time-consuming arduously.Particularly in the case of industry-by-industry is rushed to repair, time is life, it is simply that benefit.Such as: power engineering is rushed to repair, and a lot of place that works in narrow and small switch cubicle can not use electric wrench completely, largely extend the time of repairing.In the Work tool used now, mainly there are following three kinds can change driving angle instrument.The first is Multifunctional multi-head box spanner, and the second is the universal joint in sleeve combination instrument, and their shortcoming is may only to change transmission direction by low-angle, it is impossible to high-speed rotation, it is impossible to be applicable to electric wrench;The third is the soft shape driving tools of electric screwdriver, although this instrument can transform the driving tools that electric wrench uses as, but in actual use, due to this instrument, to bear moment less, and fastening diameter 6 millimeters and above screw will damage.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is for providing a kind of electric wrench universal rotational instrument that electric wrench can be made to be applicable to small space.
nullIn order to solve above-mentioned technical problem,The technical solution used in the present invention is: electric wrench universal rotational instrument,It is characterized in that,Including the first turning member,Described first turning member includes pinion stand,Two mutually perpendicular gear bore it are provided with in described pinion stand,Band bar driving bevel gear and band bar driven bevel pinion it is respectively arranged with in said two gear bore,Described band bar driving bevel gear includes driving bevel gear and driving lever,Described band bar driven bevel pinion includes driven bevel pinion and follower lever,At described driving bevel gear, it is provided with the first groove on described driving lever,At described driven bevel pinion, it is provided with the second groove on described follower lever,Described band bar driving bevel gear and described band bar driven bevel pinion are respectively by being separately fixed on described pinion stand around the copper sheathing being set on described first groove and described second groove,Described driving bevel gear and described driven bevel pinion Vertical Meshing.
Further, the upper and lower surface of described pinion stand is provided with through hole, and described copper sheathing is provided with the screw corresponding with described through hole, fixed screw pass described in state through hole and described copper sheathing is fixed on described pinion stand by described screw.
Further, the end of described driving lever is provided with the interior corner interface of standard, and the end of described follower lever is provided with the outer corner interface of standard.
Further, described electric wrench universal rotational instrument, it is characterized in that, also include drive disk assembly, described drive disk assembly includes connecting rod pedestal and the kinematic link being arranged in described connecting rod pedestal, one end of described kinematic link is corner interface in standard, the other end of described kinematic link is the outer corner interface of standard, the follower lever of described first turning member is in transmission connection with collet head by described drive disk assembly, or, the driving lever of described first turning member is in transmission connection with electric wrench by described drive disk assembly.
Further, described electric wrench universal rotational instrument, also include second turning member identical with described first turning member structure, one end of the kinematic link of described drive disk assembly is in transmission connection with described first turning member, together with the other end of the kinematic link of described drive disk assembly is in transmission connection with described second turning member.
Further, described copper sheathing is combined by two copper arc plates in semi-circular shape and is formed.
Further, described pinion stand is cuboid, its a size of 35mm*35mm*20mm, a length of 40mm of described band bar driving bevel gear, a length of 35mm of described band bar driven bevel pinion.
The present invention compared with prior art has the advantages that
1, a kind of electric wrench universal rotational instrument that the present invention proposes, including the first turning member, by arranging the vertical band bar driving bevel gear of transmission direction and band bar driven bevel pinion in first turning member, the transmission direction of electric wrench can be changed, in addition, band bar driving bevel gear and band bar driven bevel pinion are limited in pinion stand by the first turning member by copper sheathing, avoid using bearing to be fixed, the pinion stand volume that can make the present invention is greatly reduced to 35mm*35mm*20mm, the screw making electric wrench be more suitable for being spaced in the small spaces such as switch cubicle is installed and dismantlement work.
2, a kind of electric wrench universal rotational instrument that the present invention proposes, also includes drive disk assembly, and its first turning member is in transmission connection with collet head or electric wrench by drive disk assembly so that electric wrench can apply to long and narrow installing/dismounting space more flexibly;
3, a kind of electric wrench universal rotational instrument that the present invention proposes, also include the second turning member, one end of the kinematic link of drive disk assembly is in transmission connection with described first turning member, the other end of the kinematic link of described drive disk assembly is in transmission connection with described second turning member, the universal rotational instrument making the present invention can further change transmission direction, it is adaptable to the long and narrow installing/dismounting space at turning.
Accompanying drawing explanation
Fig. 1 is the first embodiment that the invention provides a kind of electric wrench universal rotational instrument;
Fig. 2 is the decomposition texture schematic diagram of the first turning member that the invention provides a kind of electric wrench universal rotational instrument;
Fig. 3 is the structural representation of copper sheathing;
Fig. 4 is the second embodiment that the invention provides a kind of electric wrench universal rotational instrument;
Fig. 5 is the 3rd embodiment that the invention provides a kind of electric wrench universal rotational instrument.
Detailed description of the invention
The present invention will be further described in detail with specific embodiment below in conjunction with the accompanying drawings.
nullAs depicted in figs. 1 and 2,The invention provides the first embodiment of a kind of electric wrench universal rotational instrument,The electric wrench universal rotational instrument that this embodiment proposes includes the first turning member 1,Described first turning member 1 includes pinion stand 11,Two mutually perpendicular gear bore 111 it are provided with on described pinion stand 11,Band bar driving bevel gear 12 and band bar driven bevel pinion 13 it is respectively arranged with in said two gear bore 111,Described band bar driving bevel gear 12 includes driving bevel gear 121 and driving lever 122,Described band bar driven bevel pinion 13 includes driven bevel pinion 131 and follower lever 132,At described driving bevel gear 121, it is provided with the first groove 123 on described driving lever 122,At described driven bevel pinion 131, it is provided with the second groove 133 on described follower lever 132,Respectively around being arranged with 1 annular copper sheathing 14 on described first groove 123 and described second groove 133,Copper sheathing 14 can be that the arc 142 of two semi-annular is combined formation,As shown in Figure 3,The arc 142 of two semi-annular is combined formation can form annular set 14,The internal diameter of this annular set 14 is slightly larger than the radius of the first groove,Therefore can be set on described first groove 123 and described second groove 133.Described band bar driving bevel gear and described band bar driven bevel pinion are separately fixed in said two gear bore 111 by 1 described annular copper sheathing 14 respectively, and the driving bevel gear 121 of described band bar driving bevel gear 12 and the driven bevel pinion 131 of described band bar driven bevel pinion 13 are at described pinion stand internal messing.Band bar driving bevel gear 12 and band bar driven bevel pinion 13 are limited in described pinion stand 11 by the present invention by copper sheathing 14, and avoid using bearing to be fixed, the turning member volume that can make the present invention is greatly reduced, and the screw making electric wrench be more suitable for being spaced in the small spaces such as switch cubicle is installed and dismantlement work.Turning member can change the transmission direction of 90 degree.Its internal bevel gear can achieve universal function with 360 degree of rotations.
The upper and lower surface of described pinion stand 11 is provided with through hole 112, being set in correspondence position on the described copper sheathing 14 on described band bar driving bevel gear 12 and described band bar driven bevel pinion 13 and be provided with screw 141, described copper sheathing is fixed on described pinion stand by the screw being arranged on described screw 141 and described through hole 112.
The installation process of the first turning member 1 is as follows, after two copper sheathings 14 are set on the drive link 122 of described band bar driving bevel gear 12, said two copper sheathing 14 is put in the gear bore 111 on described pinion stand 11 together with band bar driving bevel gear 12, and by screw from respectively by being positioned at the through hole 112 of pinion stand upper and lower surface, respectively enter in the screw 141 on two copper sheathings 14, so that band bar driving bevel gear 12 is fixed in pinion stand 11 by copper sheathing 14.Installation method with bar driven bevel pinion 13 is essentially identical with band bar driving bevel gear.
Drive link 122 end of described band bar driving bevel gear 12 is provided with the interior corner interface 123 of standard, and drive link 132 end of described band bar driven bevel pinion 13 is provided with the outer corner interface 133 of standard.Interior corner interface 123 is for being connected with electric wrench, and outer corner interface 133 is for being connected with collet head.
Further, the size of pinion stand 11 can be 35mm*35mm*20mm.Total length with bar driving bevel gear 12 is 40mm, the a diameter of 16mm of driving lever, driving bevel gear 121 thickness is 0.5mm, number of gear teeth is 18 teeth, angle of gear is 45 degree, the diameter of the driving lever at driving bevel gear 121 is processed into 12mm, forms the first groove 123, and the first recess width is 10mm.With electric wrench connecting portion, corner interface 124 in the standard that i.e. driving lever tail end is provided with, its a length of 16mm, outer cross section is the circle of diameter 20mm, and interior cross section is the square of length of side 12.8mm.Total length with bar driven bevel pinion 13 is 35mm, a diameter of 16mm of follower lever, gear thickness 0.5mm, number of gear teeth 18 tooth, angle 45 degree, the diameter of the follower lever 132 at driven bevel pinion 131 is processed into 12mm, forming the second groove, the second recess width is 10mm.Follower lever 132 end branch sleeve position is provided with the standard outer corner interface 134 of length of side 12.7mm.
nullAs shown in Figure 4,The second embodiment for a kind of electric wrench universal rotational instrument that the present invention proposes,The present embodiment is distinguished as with first embodiment,In addition to the first turning member 1,Also include drive disk assembly 2,Described drive disk assembly 2 includes connecting rod pedestal 21 and the kinematic link 22 being arranged in described connecting rod pedestal 21,One end of described kinematic link 22 is standard outer corner interface 221,The other end of described kinematic link 22 is the interior corner interface 222 of standard,The interior corner interface 222 of one end of described kinematic link 22 is arranged on electric wrench power transmission shaft,The outer corner interface 221 of the other end of described kinematic link 22 is arranged on the interior corner interface 124 on the band bar driving bevel gear 12 of described first turning member 1,Outer corner interface 134 on the band bar driven bevel pinion 13 of the first turning member 1 is connected with collet head,So that described first turning member 1 one end is in transmission connection with electric wrench by described drive disk assembly 2,The other end is connected with collet head,And can be by the transmission direction 90-degree rotation of electric wrench,And adapt in long and narrow installing/dismounting space.
In addition, in the present embodiment, the interior corner interface 222 of one end of described kinematic link 22 can also be connected with the outer corner interface 134 of the band bar driven bevel pinion 13 of described first turning member 1, the outer corner interface 221 of the other end of described kinematic link 22 is connected with collet head, now, the interior corner interface 124 of the band bar driving bevel gear 12 of the first turning member 1 is connected with the power transmission shaft of electric wrench, so that described first turning member 1 is in transmission connection with collet head by described drive disk assembly 2.That is, drive disk assembly 2 can be according to the position size of the actual installation withdrawal space, it is arranged between described first turning member 1 and collet head, or between described first turning member 1 and electric wrench, therefore the electric wrench universal rotational instrument of the present embodiment makes electric wrench can apply to long and narrow installing/dismounting space more flexibly.
As shown in Figure 5, the 3rd embodiment for a kind of electric wrench universal rotational instrument that the present invention proposes, being distinguished as of the present embodiment and the second embodiment, except the first turning member 1 and drive disk assembly 2, a kind of electric wrench universal rotational instrument of the present embodiment also includes second turning member 3 identical with described first turning member 1 structure, described second turning member 3 is arranged between described drive disk assembly 2 and electric wrench, on described second turning member 3 in the interior corner interface 222 of one end that the outer corner interface 334 of band bar driven bevel pinion 33 is arranged on the kinematic link 22 of described drive disk assembly 2, on described second turning member 3, the interior corner interface of band bar driving bevel gear 32 is in transmission connection with electric wrench;Drive disk assembly 2 is identical with the second embodiment with the connection of the first drive disk assembly 1, it may be assumed that in the interior corner interface 124 of the band bar driving bevel gear 12 that the outer corner interface 221 of one end of the kinematic link 22 of described drive disk assembly 2 is arranged on described first turning member 1.The outer corner interface of the band bar driven bevel pinion 13 of described first turning member 1 is connected with collet head.Power is transferred to the second turning member 3 through electric wrench, is transferred on collet head after drive disk assembly 2 and the first turning member 1.The universal rotational instrument of the present embodiment can further change the transmission direction of universal wrench, enables universal wrench to be applicable to the long and narrow installing/dismounting space with turning.
A kind of electric wrench universal rotational instrument that the present invention proposes, by copper sheathing, band bar driving bevel gear and band bar driven bevel pinion are limited in pinion stand, avoid using bearing to be fixed, the volume of the pinion stand of turning member in the present invention can be made to be greatly reduced to 35mm*35mm*20mm, and the screw making electric wrench be more suitable for being spaced in the small spaces such as switch cubicle is installed and dismantlement work.
Above in conjunction with accompanying drawing, embodiments of the invention are explained in detail, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to various changes can be made on the premise of without departing from present inventive concept.

Claims (7)

  1. null1. electric wrench universal rotational instrument,It is characterized in that,Including the first turning member (1),Described first turning member (1) includes pinion stand (11),Two mutually perpendicular gear bore (111) it are provided with in described pinion stand (11),Band bar driving bevel gear (12) and band bar driven bevel pinion (13) it is respectively arranged with in said two gear bore (111),Described band bar driving bevel gear (12) includes driving bevel gear (121) and driving lever (122),Described band bar driven bevel pinion (13) includes driven bevel pinion (131) and follower lever (132),Described driving lever (122) is upper is provided with the first groove (123) near described driving bevel gear (121) place,Described follower lever (132) is upper is provided with the second groove (133) near described driven bevel pinion (131) place,Described band bar driving bevel gear (12) and described band bar driven bevel pinion (13) are respectively by being separately fixed on described pinion stand (11) around the copper sheathing (14) being set on described first groove (123) and described second groove (133),Described driving bevel gear (121) and described driven bevel pinion (131) Vertical Meshing.
  2. Electric wrench universal rotational instrument the most according to claim 1, it is characterized in that, the upper and lower surface of described pinion stand (11) is provided with through hole (112), be provided with the screw (141) corresponding with described through hole (112) on described copper sheathing (14), fixed screw pass described in state through hole (112) and described copper sheathing (14) is fixed on described pinion stand (11) by described screw (141).
  3. Electric wrench universal rotational instrument the most according to claim 1, it is characterized in that, the end of described driving lever (122) is provided with interior corner interface (124) of standard, and the end of described follower lever (132) is provided with outer corner interface (134) of standard.
  4. Electric wrench universal rotational instrument the most according to claim 3, it is characterized in that, also include drive disk assembly (2), described drive disk assembly (2) includes connecting rod pedestal (21) and the kinematic link (22) being arranged in described connecting rod pedestal (21), one end of described kinematic link (22) is corner interface (221) in standard, the other end of described kinematic link is outer corner interface (222) of standard, the follower lever (132) of described first turning member (1) is in transmission connection with collet head by described drive disk assembly (2), or, the driving lever (122) of described first turning member (1) is in transmission connection with electric wrench by described drive disk assembly (2).
  5. Electric wrench universal rotational instrument the most according to claim 4, it is characterized in that, also include second turning member (3) identical with described first turning member (1) structure, one end of the kinematic link (22) of described drive disk assembly (2) is in transmission connection with described first turning member (1), together with the other end of the kinematic link (22) of described drive disk assembly is in transmission connection with described second turning member (3).
  6. Electric wrench universal rotational instrument the most according to claim 1, it is characterised in that described copper sheathing (14) is combined by two copper arc plate (142) in semi-circular shape and is formed.
  7. Electric wrench universal rotational instrument the most according to claim 1, it is characterized in that, described pinion stand (11) is cuboid, its a size of 35mm*35mm*20mm, a length of 40mm of described band bar driving bevel gear (12), a length of 35mm of described band bar driven bevel pinion (13).
CN201610501791.5A 2016-06-30 2016-06-30 Universal turning tool for electric wrench Pending CN106002806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610501791.5A CN106002806A (en) 2016-06-30 2016-06-30 Universal turning tool for electric wrench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610501791.5A CN106002806A (en) 2016-06-30 2016-06-30 Universal turning tool for electric wrench

Publications (1)

Publication Number Publication Date
CN106002806A true CN106002806A (en) 2016-10-12

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081189A (en) * 2017-12-12 2018-05-29 大连理工大学 It is a kind of to be useful in the link-type tightening mechanism tightened in inner-cavity structure and method
CN108274420A (en) * 2018-04-04 2018-07-13 国网冀北电力有限公司廊坊供电公司 A kind of overhead transmission line hotline maintenance universal wrench
CN108838929A (en) * 2018-06-12 2018-11-20 国网山东省电力公司烟台供电公司 A kind of insulation electric wrench
CN110142723A (en) * 2019-06-03 2019-08-20 中铁大桥局集团有限公司 A kind of high bolt installation extending device and its application method
CN110355713A (en) * 2019-07-16 2019-10-22 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 A kind of screw nut dismantling device and its assembly and disassembly methods
CN110900518A (en) * 2019-11-15 2020-03-24 中冶京诚工程技术有限公司 Nut assembly and disassembly tools and container building unit's dismouting device
CN112894687A (en) * 2021-01-29 2021-06-04 中国人民解放军第五七一九工厂 Aero-engine counterweight screw subpackaging tool and method
CN114029891A (en) * 2021-11-05 2022-02-11 江西科技学院 Simple multifunctional automobile repairing tool

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Publication number Priority date Publication date Assignee Title
KR20050081320A (en) * 2004-02-13 2005-08-19 양한수 Tolls combined with impact-wrench
CN201313294Y (en) * 2008-11-21 2009-09-23 鞍山钢铁集团公司 Power transmission connector of electric wrench
CN102126192A (en) * 2010-12-30 2011-07-20 方锡忠 Turning hollow automatic spanner
CN202052944U (en) * 2011-04-29 2011-11-30 中国一冶集团有限公司 Turning joint seat for sleeve wrench
CN204221684U (en) * 2014-09-04 2015-03-25 国家电网公司 A kind of portable swing handle formula screwdriver device
CN204471285U (en) * 2015-03-06 2015-07-15 李秋生 Screwdriver steering gear
CN205703935U (en) * 2016-06-30 2016-11-23 国网山西省电力公司晋城供电公司 A kind of electric wrench universal rotational instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050081320A (en) * 2004-02-13 2005-08-19 양한수 Tolls combined with impact-wrench
CN201313294Y (en) * 2008-11-21 2009-09-23 鞍山钢铁集团公司 Power transmission connector of electric wrench
CN102126192A (en) * 2010-12-30 2011-07-20 方锡忠 Turning hollow automatic spanner
CN202052944U (en) * 2011-04-29 2011-11-30 中国一冶集团有限公司 Turning joint seat for sleeve wrench
CN204221684U (en) * 2014-09-04 2015-03-25 国家电网公司 A kind of portable swing handle formula screwdriver device
CN204471285U (en) * 2015-03-06 2015-07-15 李秋生 Screwdriver steering gear
CN205703935U (en) * 2016-06-30 2016-11-23 国网山西省电力公司晋城供电公司 A kind of electric wrench universal rotational instrument

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081189A (en) * 2017-12-12 2018-05-29 大连理工大学 It is a kind of to be useful in the link-type tightening mechanism tightened in inner-cavity structure and method
CN108274420A (en) * 2018-04-04 2018-07-13 国网冀北电力有限公司廊坊供电公司 A kind of overhead transmission line hotline maintenance universal wrench
CN108838929A (en) * 2018-06-12 2018-11-20 国网山东省电力公司烟台供电公司 A kind of insulation electric wrench
CN110142723A (en) * 2019-06-03 2019-08-20 中铁大桥局集团有限公司 A kind of high bolt installation extending device and its application method
CN110142723B (en) * 2019-06-03 2021-04-06 中铁大桥局集团有限公司 High bolt installation lengthening device and using method thereof
CN110355713A (en) * 2019-07-16 2019-10-22 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 A kind of screw nut dismantling device and its assembly and disassembly methods
CN110900518A (en) * 2019-11-15 2020-03-24 中冶京诚工程技术有限公司 Nut assembly and disassembly tools and container building unit's dismouting device
CN112894687A (en) * 2021-01-29 2021-06-04 中国人民解放军第五七一九工厂 Aero-engine counterweight screw subpackaging tool and method
CN114029891A (en) * 2021-11-05 2022-02-11 江西科技学院 Simple multifunctional automobile repairing tool

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Application publication date: 20161012