CN204366371U - Crankshaft of diesel engine shaft coupling mounting tool - Google Patents

Crankshaft of diesel engine shaft coupling mounting tool Download PDF

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Publication number
CN204366371U
CN204366371U CN201420707556.XU CN201420707556U CN204366371U CN 204366371 U CN204366371 U CN 204366371U CN 201420707556 U CN201420707556 U CN 201420707556U CN 204366371 U CN204366371 U CN 204366371U
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China
Prior art keywords
shaft coupling
transition axis
support plate
nut
crankshaft
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CN201420707556.XU
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Chinese (zh)
Inventor
余凯
俞晨
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CSSC Marine Power Zhenjiang Co Ltd
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CSSC Marine Power Co Ltd
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Priority to CN201420707556.XU priority Critical patent/CN204366371U/en
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Abstract

A kind of crankshaft of diesel engine shaft coupling mounting tool, comprise transition axis, transition axis connects pre-tightening apparatus and shaft coupling mobile device, shaft coupling is contained on transition axis, transition axis connects pre-tightening apparatus and comprises center connecting screw rod, packing ring, pre-load nut and pretension stretching oil cylinder, shaft coupling mobile device comprises support plate, two shaft coupling mobile screws, lock nut and promotion nuts, when transition axis is connected pretension with bent axle termination, connecting screw rod one end, center is fixedly connected with bent axle one end, and the other end is fixedly connected with pre-load nut, pretension stretching oil cylinder piston.When shaft coupling moves, pretension stretching oil cylinder one end is resisted against outside support plate, and two shaft coupling mobile screw one end are fixedly connected with a pair screw of shaft coupling respectively, and the other end screws with promotion nut respectively.The utility model compact conformation, easy to use, low cost of manufacture, improve the reliability of shaft coupling assembling, avoids involve a delay delivery date and the economic loss of doing over again, improve the operating efficiency of shaft coupling assembling.

Description

Crankshaft of diesel engine shaft coupling mounting tool
Technical field
The utility model relates to being fixedly connected with of the larger axle of a kind of magnitude of interference and dish, particularly relates to the frock that a kind of crankshaft of diesel engine axle head is fixedly connected with shaft coupling, belongs to diesel engine mounting technology field.
Background technology
Crankshaft of diesel engine axle head needs to install shaft coupling, to be fixedly connected with flywheel by shaft coupling, diesel engine flywheel can help piston to cross compression top center, reaches the object of startup or smooth running.Shaft coupling adopts being fixedly connected with without key of elastic conjunction with crankshaft of diesel engine axle head, and difficulty is very large.As L21/31 type Crankshaft of Marine Diesel Engine axle head external diameter reaches Φ 200mm, the magnitude of interference between the shaft coupling endoporus that this model is joined and crankshaft of diesel engine axle head external diameter reaches about 0.30mm, conventional elastic conjunction frock cannot be used, now bent axle installs substantially, only being linked and packed of remaining two ends, also cannot adopt other to make the mode of bent axle axle head reduced diameter install shaft coupling.If assemble the improper rigging position causing shaft coupling cannot reach required, only have and bent axle is pulled down, destructiveness processing is carried out to shaft coupling, and easily causes bent axle and shaft coupling mating part damaged surfaces, time serious, whole bent axle is scrapped, and occasion a delay delivery date and the economic loss of doing over again.
Utility model content
The purpose of this utility model provides a kind of crankshaft of diesel engine shaft coupling mounting tool, solves shaft coupling and is difficult to the difficult problem being contained in bent axle axle head.
The utility model is achieved by the following technical programs:
A kind of crankshaft of diesel engine shaft coupling mounting tool, comprise transition axis, transition axis connects pre-tightening apparatus and shaft coupling mobile device, shaft coupling is contained on transition axis, described transition axis connects pre-tightening apparatus and comprises center connecting screw rod, packing ring, pre-load nut, pretension stretching oil cylinder and support ring, described shaft coupling mobile device comprises support plate, two shaft coupling mobile screws, is screwed in the lock nut of shaft coupling mobile screw one end and is screwed in the promotion nut of the shaft coupling mobile screw other end, support plate center is provided with support plate centre bore, and support plate two ends are arranged with support plate through hole; When transition axis is connected pretension with bent axle termination, connecting screw rod one end, center, through transition axis central through hole, is fixedly connected with bent axle one end; The center connecting screw rod other end, through packing ring, is fixedly connected with pre-load nut, pretension stretching oil cylinder piston successively, makes transition axis be fixed on bent axle termination; When shaft coupling moves, support plate inner central is resisted against on packing ring outer end, and support plate centre bore is through pre-load nut, and pretension stretching oil cylinder one end is resisted against outside support plate, and is fixedly connected with the center connecting screw rod other end through support plate; Two shaft coupling mobile screw one end are fixedly connected with a pair screw of shaft coupling radial flange dish symmetry respectively, and are locked by lock nut; Two shaft coupling mobile screw other ends pass corresponding support plate through hole after screwing with promotion nut respectively, 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, and when transition axis is connected with bent axle termination, described boss embeds in the counterbore of bent axle termination.The transition axis one end outer peripheral face extending boss is embedded with several sealing ring spaced.Described sealing ring is O RunddichtringO.
Aforesaid crankshaft of diesel engine shaft coupling mounting tool, wherein said promotion nut is bearing on inside support plate by thrust bearing.
Aforesaid crankshaft of diesel engine shaft coupling mounting tool, the rotation direction of wherein said shaft coupling mobile screw two ends screw thread is contrary.
The utility model compact conformation, easy to use, low cost of manufacture.Hydraulic oil when expanding shaft coupling centre bore can be avoided to leak, two shaft coupling mobile screws promotion shaft couplings are made to move on bent axle axle head smoothly by pulling promotion nut, improve the reliability of shaft coupling assembling, guarantee that shaft coupling centre bore can be expanded to put in place, thus prevent shaft coupling be stuck in bent axle axle head enterprising must not move back assemble failed problem, improve the reliability of shaft coupling assembling, avoid that bent axle occurs and scrap the economic loss incured loss through delay delivery date and do over again, improve the operating efficiency of shaft coupling assembling.
Advantage and disadvantage of the present utility model, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is for transition axis to be connected the schematic diagram of pretension with bent axle;
Fig. 2 is the schematic diagram moved to for shaft coupling on bent axle termination.
Detailed description of the invention
The embodiment of installing shaft coupling below in conjunction with accompanying drawing and L21/31 type Crankshaft of Marine Diesel Engine further illustrates the utility model.
As depicted in figs. 1 and 2, the crankshaft of diesel engine shaft coupling mounting tool of the present embodiment comprises transition axis 1, transition axis connects pre-tightening apparatus 2 and shaft coupling mobile device 3, shaft coupling 4 is contained on transition axis 3, transition axis connects pre-tightening apparatus 2 and comprises 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 comprises support plate 31, 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 the promotion nut 34 of shaft coupling mobile screw left end, support plate 31 center is provided with support plate centre bore 311, two ends are arranged with support plate through hole 312.When transition axis 1 is connected pretension with bent axle 5 left end termination, center connecting screw rod 21 right-hand member, through transition axis central through hole 11, is fixedly connected with bent axle 5 left end internal thread hole 51; Center connecting screw rod 21 left end, through packing ring 22, is fixedly connected with pre-load nut 23, pretension stretching oil cylinder piston 241 successively, transition axis 1 is fixed on bent axle 5 termination.Transition axis 1 right-hand member extends boss 12, and when transition axis 1 is connected with bent axle 5 left end termination, boss 12 embeds in bent axle termination counterbore 52.The transition axis 1 right-hand member outer peripheral face extending boss 12 is embedded with spaced 3 road O RunddichtringOs 6, can avoid occurring in hydraulic oil leakage problem during expansion shaft coupling centre bore 42, thus avoid occurring that shaft coupling 4 is stuck in motionless problem that bent axle 5 termination retreats.
When shaft coupling 4 moves, the counterbore 313 of support plate 31 inner central is resisted against on packing ring 22 left side, support plate centre bore 311 is through pre-load nut 23, pretension stretching oil cylinder 24 one end is resisted against outside support plate 31, and pretension stretching oil cylinder piston 241 is fixedly connected with center connecting screw rod 21 left end through support plate 31.Two shaft coupling mobile screw 32 right-hand members are fixedly connected with a pair screw 411 of shaft coupling radial flange dish 41 symmetry respectively, and locked by lock nut 33, corresponding support plate through hole 312 is passed after two shaft coupling mobile screw 32 left ends screw with promotion nut 34 respectively, promote nut 34 to be bearing on inside support plate 31 by thrust bearing 35, make to promote nut 34 with spanner rotation very light.The rotation direction of shaft coupling mobile screw 32 two ends screw thread is contrary, can prevent from rotating promoting nut 34 and promoting shaft coupling 4 when moving, and shaft coupling mobile screw 32 is connected loosening problem with shaft coupling radial flange valve snail hole 411.
Crankshaft of diesel engine shaft coupling installation process is as follows:
1) shaft coupling 4 is arranged on transition axis 1
Shaft coupling 4 is heated to 270-290 DEG C, is incubated horizontal positioned after 4 hours, then transition axis 1 one end with 3 road seal grooves 13 is inserted in shaft coupling axial center hole 42 facing downward;
2) transition axis 1 of shaft coupling and the connection of bent axle 5 and pretension are housed
2.1) by diesel engine first cylinder dish to upper dead center position, then center connecting screw rod 21 right-hand member is screwed in the screwed hole 51 in bent axle 5 left end termination, again 3 road O RunddichtringOs 6 are embedded in the spaced seal groove 13 of transition axis 1 right-hand member outer peripheral face respectively, then the transition axis 1 installing shaft coupling 4 is packed into center connecting screw rod 21, notice that inclined oil hole of air 412 position of shaft coupling 4 must, make transition axis 1 be located until the boss 12 of transition axis 1 one end embeds in the counterbore 52 of bent axle 5 termination upward; Center connecting screw rod 21 left end is stretched and is fixedly connected with pretension stretching oil cylinder piston 241 with pre-load nut 23 successively through after packing ring 22, is enclosed within support ring on pre-load nut 23 between pretension stretching oil cylinder 24 and packing ring 22.
2.2) pre-load nut 23 on the connecting screw rod other end of center and pretension stretching oil cylinder piston 241 is tentatively tightened successively, the faying face of transition axis 1 and bent axle 5 is close to each other, corrects at transition axis 1 and bent axle 5 axle head surrounding ruler and guarantee that transition axis 1 is coaxial with bent axle 5.
2.3) transition axis 1 is connected pretension with bent axle 5
Hydraulic pump is by the hydraulic oil of pretension high-pressure oil pipe to pretension stretching oil cylinder input 118 ~ 120MPa, move outside pretension stretching oil cylinder piston 241, connected center connecting screw rod 21 is pulled to stretch out, when there is gap between pre-load nut 23 and packing ring 22 end face, tighten pre-load nut 23, until elimination aforementioned gap, complete the connection pretension of transition axis 1 and bent axle 5.
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 the right-hand member of two shaft coupling mobile screws 32 that lock nut 33, left end loaded onto thrust bearing 35 and promoted nut 34 to be screwed in respectively in a pair screw 411 of shaft coupling radial flange dish 41 symmetry, and tighten corresponding lock nut 33; Again support plate centre bore 313 is enclosed within pre-load nut 33, support plate 31 inner central is resisted against on packing ring 22 outer end, gap is left between support plate 31 medial surface and transition axis 1 end face, two shaft coupling mobile screw 32 left ends are each passed through corresponding support plate through hole 312, connecting screw rod left end termination, center is loaded onto pretension stretching oil cylinder, and pretension stretching oil cylinder piston end surface to be resisted against outside support plate 31 in central authorities.
4) shaft coupling moves on bent axle termination
Hydraulic pump inputs the hydraulic oil expansion shaft coupling centre bore 42 of 170 ~ 190MPa by the inclined oil hole of air 412 of high-pressure oil pipe to shaft coupling 4, make to produce gap between shaft coupling centre bore 42 and transition axis 1 cylindrical, simultaneously with the promotion nut 34 on the synchronous turn of spanner two shaft coupling mobile screws 32, strengthen the spacing with shaft coupling 4 on the right side of support plate 31 gradually, shaft coupling 4 is moved on to bent axle 5 gradually from transition axis 1.
In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims (6)

1. a crankshaft of diesel engine shaft coupling mounting tool, it is characterized in that, comprise transition axis, transition axis connects pre-tightening apparatus and shaft coupling mobile device, shaft coupling is contained on transition axis, described transition axis connects pre-tightening apparatus and comprises center connecting screw rod, packing ring, pre-load nut, pretension stretching oil cylinder and support ring, described shaft coupling mobile device comprises support plate, two shaft coupling mobile screws, be screwed in the lock nut of shaft coupling mobile screw one end and be screwed in the promotion nut of 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 is connected pretension with bent axle termination, connecting screw rod one end, center, through transition axis central through hole, is fixedly connected with bent axle one end, the center connecting screw rod other end, through packing ring, is fixedly connected with pre-load nut, pretension stretching oil cylinder piston successively, makes transition axis be fixed on bent axle termination, when shaft coupling moves, support plate inner central is resisted against on packing ring outer end, and support plate centre bore is through pre-load nut, and pretension stretching oil cylinder one end is resisted against outside support plate, and is fixedly connected with the center connecting screw rod other end through support plate, two shaft coupling mobile screw one end are fixedly connected with a pair screw of shaft coupling radial flange dish symmetry respectively, and are locked by lock nut, two shaft coupling mobile screw other ends pass corresponding support plate through hole after screwing with promotion nut respectively, described promotion nut support inside support plate on.
2. crankshaft of diesel engine shaft coupling mounting tool as claimed in claim 1, it is characterized in that, boss is extended in described transition axis one end, and when transition axis is connected with bent axle termination, described boss embeds in the counterbore of bent axle termination.
3. crankshaft of diesel engine shaft coupling mounting tool as claimed in claim 2, is characterized in that, the transition axis one end outer peripheral face extending boss is embedded with several sealing ring spaced.
4. crankshaft of diesel engine shaft coupling mounting tool as claimed in claim 3, it is characterized in that, described sealing ring is O RunddichtringO.
5. crankshaft of diesel engine shaft coupling mounting tool as claimed in claim 1, it is characterized in that, described promotion nut is bearing on inside support plate by thrust bearing.
6. crankshaft of diesel engine shaft coupling mounting tool as claimed in claim 1, it is characterized in that, the rotation direction of described shaft coupling mobile screw two ends screw thread is contrary.
CN201420707556.XU 2014-11-24 2014-11-24 Crankshaft of diesel engine shaft coupling mounting tool Active CN204366371U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420707556.XU CN204366371U (en) 2014-11-24 2014-11-24 Crankshaft of diesel engine shaft coupling mounting tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420707556.XU CN204366371U (en) 2014-11-24 2014-11-24 Crankshaft of diesel engine shaft coupling mounting tool

Publications (1)

Publication Number Publication Date
CN204366371U true CN204366371U (en) 2015-06-03

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CN201420707556.XU Active CN204366371U (en) 2014-11-24 2014-11-24 Crankshaft of diesel engine shaft coupling mounting tool

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105537907A (en) * 2015-12-17 2016-05-04 太原重工股份有限公司 Oil film bearing replacer
CN107598840A (en) * 2017-10-23 2018-01-19 中车长春轨道客车股份有限公司 Assemble the adjustable anti-rotation shaft positioning tool of shaft coupling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105537907A (en) * 2015-12-17 2016-05-04 太原重工股份有限公司 Oil film bearing replacer
CN107598840A (en) * 2017-10-23 2018-01-19 中车长春轨道客车股份有限公司 Assemble the adjustable anti-rotation shaft positioning tool of shaft coupling
CN107598840B (en) * 2017-10-23 2019-10-01 中车长春轨道客车股份有限公司 Assemble the adjustable anti-rotation shaft positioning tool of shaft coupling

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C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

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.