CN104368956B - Diesel engine crankshaft coupling installation tool and method - Google Patents
Diesel engine crankshaft coupling installation tool and method Download PDFInfo
- Publication number
- CN104368956B CN104368956B CN201410676120.3A CN201410676120A CN104368956B CN 104368956 B CN104368956 B CN 104368956B CN 201410676120 A CN201410676120 A CN 201410676120A CN 104368956 B CN104368956 B CN 104368956B
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- shaft coupling
- pretension
- transition axis
- support plate
- nut
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
Abstract
The invention discloses a diesel engine crankshaft coupling installation tool and a diesel engine crankshaft coupling installation method, wherein the diesel engine crankshaft coupling installation tool comprises a transition shaft, a transition shaft connection pre-tightening device and a coupling moving device, the coupling is installed on the transition shaft, the transition shaft connection pre-tightening device comprises a central connection screw rod, a gasket, a pre-tightening nut and a pre-tightening stretching oil cylinder, and the coupling moving device comprises a support plate, two coupling moving screw rods, a locking nut and a pushing nut. The method comprises the following steps: 1) the coupling is arranged on the transition shaft, 2) the connection and pretension between the transition shaft provided with the coupling and the crankshaft, 3) the coupling moving device is arranged, and 4) the coupling moves to the end head of the crankshaft. The diesel engine crankshaft coupling mounting tool is compact in structure, convenient to use and low in manufacturing cost. The coupling moving method improves the reliability of coupling assembly, avoids economic losses of delayed delivery date and rework, and improves the working efficiency of coupling assembly.
Description
Technical field
The present invention relates to being fixedly connected of a kind of larger axle of magnitude of interference and disk, more particularly, to a kind of crankshaft of diesel engine axle head
The frock being fixedly connected with shaft coupling and method, belong to diesel engine mounting technology field.
Background technology
Crankshaft of diesel engine axle head needs to install shaft coupling, is fixedly connected with flywheel with will pass through shaft coupling, diesel engine flywheel
Piston can be helped to cross compression top center, reach startup or the purpose of smooth running.Shaft coupling and crankshaft of diesel engine axle head are adopted
It is fixedly connected with the no key of elastic conjunction, difficulty is very big.As l21/31 type Crankshaft of Marine Diesel Engine axle head external diameter reaches φ 200mm,
The magnitude of interference between shaft coupling endoporus that this model is joined and crankshaft of diesel engine axle head external diameter reach 0.30mm about it is impossible to use
Conventional elastic conjunction mode, now bent axle substantially install, only being linked and packed it is impossible to be made using other of remaining two ends
The mode of bent axle axle head reduced diameter installs shaft coupling.Shaft coupling is caused to be unable to reach required assembling position if assembling is improper
Put, only bent axle is pulled down, shaft coupling is carried out with destructive processing, and be easily caused bent axle and damage with shaft coupling mating part surface
Bad, when serious, whole bent axle is scrapped, and occasion a delay date of delivery and the economic loss done over again.
Content of the invention
It is an object of the invention to provide a kind of crankshaft of diesel engine shaft coupling mounting tool and installation method, solve shaft coupling and be difficult to
It is contained in a difficult problem for bent axle axle head.
The present invention is achieved by the following technical programs:
A kind of crankshaft of diesel engine shaft coupling mounting tool, including transition axis, transition axis connects pre-tightening apparatus and shaft coupling moves
Dynamic device, shaft coupling is contained on transition axis, and described transition axis connects pre-tightening apparatus and includes center connecting screw rod, packing ring, pretension spiral shell
Female, pretension stretching oil cylinder and support ring, described shaft coupling mobile device includes support plate, two shaft coupling mobile screws, is screwed in connection
The lock nut of joint mobile screw one end and the promotion nut being screwed in the shaft coupling mobile screw other end, support plate center is provided with
Support plate centre bore, support plate two ends are arranged with support plate through hole；When transition axis and bent axle termination connect pretension, center connecting screw rod one
End, through transition axis central through hole, is fixedly connected with bent axle one end；The center connecting screw rod other end passes through packing ring, successively with pretension
Nut, pretension stretching oil cylinder piston are fixedly connected so that transition axis is fixed on bent axle termination, and support ring is enclosed within pre-load nut
On, stretch between oil cylinder and packing ring positioned at pretension；When shaft coupling is mobile, support plate inner central is resisted against on packing ring outer end, support plate
Centre bore pass through pre-load nut, pretension stretching oil cylinder one end be resisted against outside support plate, and with the center connecting screw rod through support plate
The other end is fixedly connected；Two a pair of symmetrical with shaft coupling radial flange disk respectively screws of shaft coupling mobile screw one end are fixed
Connect, and locked by lock nut；Two shaft coupling mobile screw other ends pass corresponding after screwing with promotion nut respectively
Support plate through hole, described promotion nut support inside support plate on.
Aforesaid crankshaft of diesel engine shaft coupling mounting tool, boss is extended in wherein said transition axis one end, transition axis with
When bent axle termination connects, described boss embeds in the counterbore of bent axle termination.Extend and be embedded with transition axis one end outer peripheral face of boss
Several sealing ring spaced.Described sealing ring is o type sealing ring.
Aforesaid crankshaft of diesel engine shaft coupling mounting tool, wherein said promotion nut is bearing in support plate by thrust bearing
On inner side.
Aforesaid crankshaft of diesel engine shaft coupling mounting tool, the rotation direction phase of wherein said shaft coupling mobile screw two ends screw thread
Instead.
A kind of crankshaft of diesel engine shaft coupling installation method, comprises the following steps:
1) shaft coupling is arranged on transition axis
Shaft coupling is heated to 270-290 DEG C, horizontal positioned after being incubated 4 hours, then will there is several seal groove
Transition axis one end is inserted in shaft coupling axial center hole facing downward；
2) equipped with the transition axis of shaft coupling and the connection of bent axle and pretension
2.1) by diesel engine the first cylinder disk to upper dead center position, then the center connecting screw rod other end is screwed into bent axle termination
In interior screwed hole, then several sealing ring is embedded in the spaced seal groove of transition axis one end outer peripheral face respectively, so
The transition axis having been installed shaft coupling afterwards packs into center connecting screw rod, note shaft coupling inclined oil hole of air position must upward, until
Transition axis is made to be positioned in the counterbore of the embedded bent axle termination of the boss of transition axis one end；The center connecting screw rod other end extends through
It is fixedly connected with pre-load nut and pretension stretching oil cylinder piston successively after packing ring, the support ring being enclosed within pre-load nut is located at pre-
Strain at and stretch between oil cylinder and packing ring；
2.2) tentatively tighten the pre-load nut on the connecting screw rod other end of center and pretension stretching oil cylinder piston successively, made
Cross axle and the faying face of bent axle is snugly into each other, guarantee that transition axis is same with bent axle in transition axis with the correction of bent axle axle head surrounding ruler
Axle；
2.3) transition axis and bent axle connect pretension
Hydraulic pump passes through pretension high-pressure oil pipe and stretches, to pretension, the hydraulic oil that oil cylinder inputs 118～120mpa, and pretension stretches
Move outside oil cylinder piston, pull connected center connecting screw rod to stretch out, occur between pre-load nut and washer face
During gap, tightening pre-load nut, until eliminating aforementioned gap, completing the connection pretension of transition axis and bent axle；
3) shaft coupling mobile device is installed
Pull down pretension stretching oil cylinder and support ring, then one end has been loaded onto lock nut, the other end and loaded onto thrust axis
Hold and promote one end of two shaft coupling mobile screws of nut to be screwed in a pair of symmetrical screw of shaft coupling radial flange disk respectively
In, and tighten corresponding lock nut；Again support plate centre bore is enclosed within pre-load nut, support plate inner central is resisted against outside packing ring
On end, between support plate medial surface and transition axial end, leave gap, two shaft coupling mobile screw other ends are each passed through correspondence
Support plate through hole, center connecting screw rod other end termination is loaded onto pretension stretching oil cylinder, pretension stretching oil cylinder piston end surface support
Lean against in central authorities outside support plate；
4) shaft coupling moves on bent axle termination
Hydraulic pump passes through in the hydraulic oil expansion shaft coupling that high-pressure oil pipe inputs 170～190mpa to the inclined oil hole of air of shaft coupling
Heart hole so that shaft coupling centre bore and transition axis cylindrical between produce gap, moved with spanner synchronization two shaft couplings of turn simultaneously
Promotion nut on dynamic screw rod, is gradually increased inside support plate distance and shaft coupling between, so that shaft coupling is gradually moved to from transition axis
On bent axle.
Aforesaid crankshaft of diesel engine shaft coupling installation method, wherein step 2.2) in transition axis and bent axle faying face gap
Less than 0.02mm.
The crankshaft of diesel engine shaft coupling mounting tool compact conformation of the present invention, easy to use, low cost of manufacture.The present invention's
Shaft coupling moving method is first contained in after shaft coupling heating reaming on transition axis, then transition axis is coaxially located by connecting with bent axle,
Then with pretension stretching oil cylinder pretension center connecting screw rod, thus eliminating the end clearance of transition axis and bent axle axle head, it is easy to join
The movement of joint；Transition axis is set up multiple-sealed circle come to avoid expand shaft coupling centre bore when hydraulic oil leakage it is ensured that
Shaft coupling centre bore can be expanded and put in place, thus prevent shaft coupling be stuck in bent axle axle head enterprising must not move back assemble asking of failure
Topic.Promote nut so that two shaft coupling mobile screws promote shaft coupling smoothly to move on bent axle axle head by pulling, improve
The reliability of shaft coupling assembling, it is to avoid occur bent axle to scrap delay date of delivery and the economic loss done over again, improve shaft coupling
The work efficiency of assembling.
Advantages of the present invention and feature, will be for illustration and explanation by the non-limitative illustration of preferred embodiment below,
These embodiments, are only used as example referring to the drawings and are given.
Brief description
Fig. 1 is the schematic diagram for transition axis and bent axle connection pretension；
Fig. 2 is the schematic diagram moving to for shaft coupling on bent axle termination.
Specific embodiment
The embodiment installing shaft coupling below in conjunction with the accompanying drawings with l21/31 type Crankshaft of Marine Diesel Engine is further to the present invention
Explanation.
As depicted in figs. 1 and 2, the crankshaft of diesel engine shaft coupling mounting tool of the present embodiment includes transition axis 1, transition axis even
Connect pre-tightening apparatus 2 and shaft coupling mobile device 3, shaft coupling 4 is contained on transition axis 1, transition axis connects pre-tightening apparatus 2 and includes center
Connecting screw rod 21, packing ring 22, pre-load nut 23, pretension stretching oil cylinder 24 and support ring 25, shaft coupling mobile device 3 includes support plate
31st, two shaft coupling mobile screws 32, be screwed in the lock nut 33 of shaft coupling mobile screw 32 right-hand member and be screwed in shaft coupling and move
The promotion nut 34 of dynamic screw rod left end, support plate 31 center is provided with support plate centre bore 311, and two ends are arranged with support plate through hole 312.Cross
When crossing axle 1 and bent axle 5 left end termination connection pretension, center connecting screw rod 21 right-hand member passes through transition axis central through hole 11, with bent axle 5
Left end internal thread hole 51 is fixedly connected；Center connecting screw rod 21 left end passes through packing ring 22, stretches with pre-load nut 23, pretension successively
Oil cylinder piston 241 is fixedly connected so that transition axis 1 is fixed on bent axle 5 termination.Support ring 25 is enclosed within pre-load nut 23, position
Stretch between oil cylinder 24 and packing ring 22 in pretension.Transition axis 1 right-hand member extends
, boss 12, when transition axis 1 is connected with bent axle 5 left end termination, boss 12 embeds in bent axle termination counterbore 52.Transition
Spaced 3 road o type sealing rings 6 are embedded with axle 1 right-hand member outer peripheral face, can avoid occurring when expanding shaft coupling centre bore
Hydraulic oil leakage problem, thus avoid the occurrence of shaft coupling 4 to be stuck on bent axle 5 termination motionless problem of retreating.
When shaft coupling 4 is mobile, the counterbore 313 of support plate 31 inner central is resisted against on packing ring 22 left side, support plate centre bore
311 pass through pre-load nut 23, and pretension stretching oil cylinder 24 one end is resisted against outside support plate 31, and pretension stretches oil cylinder piston 241 and wears
Center connecting screw rod 21 left end crossing support plate 31 is fixedly connected.Two shaft coupling mobile screw 32 right-hand members are respectively with shaft coupling radially
Symmetrical a pair of the screw 411 of ring flange 41 is fixedly connected, and is locked by lock nut 33, and two shaft coupling mobile screws 32 are left
End passes corresponding support plate through hole 312 with promoting nut 34 after screwing respectively, promotes nut 34 to be bearing in by thrust bearing 35
Support plate 31 inner side is upper to promote nut 34 very comfortable so that being rotated with spanner.The rotation direction of shaft coupling mobile screw 32 two ends screw thread
On the contrary, can prevent from rotating when promoting nut 34 to promote shaft coupling 4 mobile, shaft coupling mobile screw 32 and shaft coupling radial flange
Valve snail hole 411 connects the problem loosening.
Crankshaft of diesel engine shaft coupling installation method comprises the following steps:
1) shaft coupling 4 is arranged on transition axis 1
Shaft coupling 4 is heated to 270-290 DEG C, horizontal positioned after being incubated 4 hours, then will have 3 road seal grooves 13
Transition axis 1 one end insert facing downward in shaft coupling axial center hole；
2) equipped with the transition axis 1 of shaft coupling and the connection of bent axle 5 and pretension
2.1) by diesel engine the first cylinder disk to upper dead center position, then center connecting screw rod 21 right-hand member is screwed into bent axle 5 left
In screwed hole 51 in the termination of end, then 3 road o type sealing rings 6 are embedded in the spaced close of transition axis 1 right-hand member outer peripheral face respectively
In seal groove 13, the transition axis 1 then having been installed shaft coupling 4 packs into center connecting screw rod 21, notes the inclined oil hole of air of shaft coupling 4
412 positions must make transition axis 1 be determined until the boss 12 of transition axis 1 one end embeds in the counterbore 52 of bent axle 5 termination upward
Position；Center connecting screw rod 21 left end is fixed with pre-load nut 23 and pretension stretching oil cylinder piston 241 after extending through packing ring 22 successively
Connect, be enclosed within and be located between pretension stretching oil cylinder 24 and packing ring 22 in the support ring 25 on pre-load nut 23.
2.2) pre-load nut 23 on the connecting screw rod other end of center and pretension stretching oil cylinder piston are tentatively tightened successively
241, make the faying face of transition axis 1 and bent axle 5 snugly into each other, guaranteed with the correction of bent axle 5 axle head surrounding ruler in transition axis 1
Cross axle 1 coaxial with bent axle 5.
2.3) transition axis 1 and bent axle 5 connect pretension
Hydraulic pump passes through pretension high-pressure oil pipe and stretches, to pretension, the hydraulic oil that oil cylinder 24 inputs 118～120mpa, strains in advance
Stretch the outer shifting of oil cylinder piston 241, pull connected center connecting screw rod 21 to stretch out, when pre-load nut 23 and packing ring 22 end
When gap occurring between face, tightening pre-load nut 23, until eliminating aforementioned gap, completing transition axis 1 pre- with the connection of bent axle 5
Tightly.
3) shaft coupling mobile device is installed
Pull down pretension stretching oil cylinder 24 and support ring 25, then right-hand member is loaded onto lock nut 33, left end is loaded onto and pushed away
It is right that the right-hand member of two shaft coupling mobile screws 32 of power bearing 35 and promotion nut 34 is screwed in shaft coupling radial flange disk 41 respectively
In a pair of the screw 411 claiming, and tighten corresponding lock nut 33；Again support plate centre bore 313 is enclosed within pre-load nut 33,
Plate 31 inner central is resisted against on packing ring 22 outer end, leaves gap between support plate 31 medial surface and transition axis 1 end face, two shaft couplings
Section mobile screw 32 left end is each passed through corresponding support plate through hole 312, loads onto pre- straining on the connecting screw rod left end termination of center
Stretch oil cylinder, pretension stretching oil cylinder piston end surface is resisted against in support plate 31 outside central authorities.
4) shaft coupling moves on bent axle termination
Hydraulic pump passes through the hydraulic oil expansion shaft coupling that high-pressure oil pipe inputs 170～190mpa to the inclined oil hole of air 412 of shaft coupling 4
Section centre bore so that shaft coupling centre bore and transition axis 1 cylindrical between produce gap, simultaneously with spanner synchronization two shaft couplings of turn
Promotion nut 34 on section mobile screw 32, is gradually increased distance between support plate 31 right side and shaft coupling 4, makes shaft coupling 4 from mistake
Cross axle 1 to be gradually moved on bent axle 5.
In addition to the implementation, the present invention can also have other embodiment, all employing equivalents or equivalent transformation shape
The technical scheme becoming, all falls within the protection domain of application claims.
Claims (2)
1. a kind of method of application crankshaft of diesel engine shaft coupling mounting tool, crankshaft of diesel engine shaft coupling mounting tool includes transition
Axle, transition axis connect pre-tightening apparatus and shaft coupling mobile device, and shaft coupling is contained on transition axis, and described transition axis connects pretension dress
Put including center connecting screw rod, packing ring, pre-load nut, pretension stretching oil cylinder and support ring, described shaft coupling mobile device includes
Support plate, two shaft coupling mobile screws, it is screwed in the lock nut of shaft coupling mobile screw one end and is screwed in shaft coupling and moves spiral shell
The promotion nut of the bar other end, support plate center is provided with support plate centre bore, and support plate two ends are arranged with support plate through hole；Transition axis and song
When shaft end head connects pretension, center connecting screw rod one end passes through transition axis central through hole, is fixedly connected with bent axle one end；Center is even
Connect the screw rod other end and pass through packing ring, be fixedly connected so that transition axis is fixed on pre-load nut, pretension stretching oil cylinder piston successively
On bent axle termination, support ring is enclosed within pre-load nut, stretches between oil cylinder and packing ring positioned at pretension；When shaft coupling is mobile, support plate
Inner central is resisted against on packing ring outer end, and support plate centre bore passes through pre-load nut, and pretension stretching oil cylinder one end is resisted against outside support plate
Side, and be fixedly connected with the center connecting screw rod other end through support plate；Two shaft coupling mobile screw one end respectively with shaft coupling
Pitch diameter is fixedly connected to a pair of symmetrical screw of ring flange, and is locked by lock nut；Two shaft coupling mobile screws are another
End respectively with promote nut screw after pass corresponding support plate through hole, described promotion nut support inside support plate on；Its feature
It is, method comprises the following steps:
1) shaft coupling is arranged on transition axis
Shaft coupling is heated to 270-290 DEG C, horizontal positioned after being incubated 4 hours, then will have the transition of several seal groove
Axle one end is inserted in shaft coupling axial center hole facing downward；
2) equipped with the transition axis of shaft coupling and the connection of bent axle and pretension
2.1) by diesel engine the first cylinder disk to upper dead center position, then the center connecting screw rod other end is screwed in bent axle termination
In screwed hole, then several sealing ring is embedded in the spaced seal groove of transition axis one end outer peripheral face respectively, then will
The transition axis having installed shaft coupling packs into center connecting screw rod, notices that the inclined oil hole of air position of shaft coupling must upward, up to transition
Transition axis is made to be positioned in the counterbore of the embedded bent axle termination of the boss of axle one end；The center connecting screw rod other end extends through packing ring
It is fixedly connected with pre-load nut and pretension stretching oil cylinder piston successively afterwards, the support ring being enclosed within pre-load nut is located at pretension and stretches
Between oil cylinder and packing ring；
2.2) tentatively tighten the pre-load nut on the connecting screw rod other end of center and pretension stretching oil cylinder piston successively, make transition axis
Snugly into each other with the faying face of bent axle, guarantee that transition axis is coaxial with bent axle in transition axis with the correction of bent axle axle head surrounding ruler；
2.3) transition axis and bent axle connect pretension
Hydraulic pump passes through pretension high-pressure oil pipe and stretches, to pretension, the hydraulic oil that oil cylinder inputs 118～120mpa, and pretension stretches oil cylinder
Move outside piston, pull connected center connecting screw rod to stretch out, gap occurs between pre-load nut and washer face
When, tightening pre-load nut, until eliminating aforementioned gap, completing the connection pretension of transition axis and bent axle；
3) shaft coupling mobile device is installed
Pull down pretension stretching oil cylinder and support ring, then one end has been loaded onto lock nut, the other end loaded onto thrust bearing and
The one end promoting two shaft coupling mobile screws of nut is screwed in a pair of symmetrical screw of shaft coupling radial flange disk respectively, and
Tighten corresponding lock nut；Again support plate centre bore is enclosed within pre-load nut, support plate inner central is resisted against on packing ring outer end,
Gap is left, two shaft coupling mobile screw other ends are each passed through corresponding support plate between support plate medial surface and transition axial end
Through hole, loads onto pretension stretching oil cylinder on the connecting screw rod other end termination of center, and pretension stretching oil cylinder piston end surface is resisted against and props up
In central authorities outside plate；
4) shaft coupling moves on bent axle termination
Hydraulic pump passes through the hydraulic oil expansion shaft coupling center that high-pressure oil pipe inputs 170～190mpa to the inclined oil hole of air of shaft coupling
Hole so that shaft coupling centre bore and transition axis cylindrical between produce gap, moved with spanner synchronization two shaft couplings of turn simultaneously
Promotion nut on screw rod, is gradually increased inside support plate distance and shaft coupling between, makes shaft coupling be gradually moved to song from transition axis
On axle.
2. the method for application crankshaft of diesel engine shaft coupling mounting tool as claimed in claim 1 is it is characterised in that step 2.2)
The gap of middle transition axis and bent axle faying face is less than 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676120.3A CN104368956B (en) | 2014-11-24 | 2014-11-24 | Diesel engine crankshaft coupling installation tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676120.3A CN104368956B (en) | 2014-11-24 | 2014-11-24 | Diesel engine crankshaft coupling installation tool and method |
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| Publication Number | Publication Date |
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| CN104368956A CN104368956A (en) | 2015-02-25 |
| CN104368956B true CN104368956B (en) | 2017-02-01 |
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| CN201410676120.3A Active CN104368956B (en) | 2014-11-24 | 2014-11-24 | Diesel engine crankshaft coupling installation tool and method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104816143B (en) * | 2015-03-31 | 2017-01-18 | 上海中船三井造船柴油机有限公司 | Dismounting and mounting method and device of segmented crankshaft of marine low speed diesel engine |
| CN105459024A (en) * | 2016-01-07 | 2016-04-06 | 惠生（南通）重工有限公司 | Tool used for hinge point hole axis penetrating |
| CN106059189B (en) * | 2016-07-27 | 2018-06-12 | 中车永济电机有限公司 | The heavy loading locomotive traction electric machine of single bearing structure |
| CN109015476B (en) * | 2018-10-12 | 2020-06-16 | 中船动力有限公司 | Overhauling method for overhauling tool by using low-speed marine diesel engine piston assembly |
| CN109551202A (en) * | 2018-11-30 | 2019-04-02 | 湖北合强机械发展股份有限公司 | The assembly and disassembly methods of shaft coupling |
| CN112192499B (en) * | 2020-11-02 | 2024-04-05 | 中船动力有限公司 | Mounting tool and mounting method for high-pressure oil pump plunger combined O-shaped sealing ring |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE790247A (en) * | 1972-01-07 | 1973-02-15 | Samuel Moore & Cy | Connection fixing device |
| US6012211A (en) * | 1998-10-30 | 2000-01-11 | Ochoa; Sandy | Wheel puller |
| CN202825152U (en) * | 2012-10-09 | 2013-03-27 | 新乡市飞宇起重机械厂 | Dismantling device of big pin |
| CN203093082U (en) * | 2013-02-26 | 2013-07-31 | 江苏省徐州锻压机床厂集团有限公司 | Combined type press machine body pull rod pre-tightening mechanism |
| CN103273303B (en) * | 2013-06-21 | 2015-09-16 | 南车戚墅堰机车有限公司 | Train wheel axle box bearing dismounting frock |
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Address after: 212211 No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |
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