CN103423314B - A kind of engine crankshaft main journal independent support module - Google Patents
A kind of engine crankshaft main journal independent support module Download PDFInfo
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- CN103423314B CN103423314B CN201310384374.3A CN201310384374A CN103423314B CN 103423314 B CN103423314 B CN 103423314B CN 201310384374 A CN201310384374 A CN 201310384374A CN 103423314 B CN103423314 B CN 103423314B
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- loose piece
- hold
- down bolt
- bottom outlet
- axle bush
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Abstract
The present invention relates to a kind of engine crankshaft main journal independent support module, comprise pedestal, lower loose piece, upper locating stud, upper loose piece, lower locating stud, lower hold-down bolt, upper hold-down bolt; Pedestal and lower loose piece are positioned by lower locating stud, lower loose piece and upper loose piece are positioned by upper locating stud; Pedestal is fixedly connected with by lower hold-down bolt with lower loose piece, and lower loose piece is fixedly connected with by upper hold-down bolt with upper loose piece; Lower loose piece and upper loose piece are all processed with main axle bush locating slot; Lower loose piece and upper loose piece align rear formation crankshaft main bearing bottom outlet, inlay main axle bush in crankshaft main bearing bottom outlet; Main axle bush is located by main axle bush locating slot.Flexible replacing and the reparation of engine crankshaft main bearing bottom outlet can be realized, have and simple, that fault treatment is easy, experimentation cost is changed conveniently, saved to motor important Parts advantage is installed, improve convertibility and the recoverability of test single-cylinder engine important Parts.
Description
Technical field
The invention belongs to diesel engine test technical field, be specifically related to a kind of diesel engine test crankshaft main journal supporting module.
Background technique
Along with the increasingly stringent of Abgasgesetz, needed for the development trend of compact, the high power per liter of motor height, speed up, each engine production producer, study colleges and universities in one's power and all need the specific techniques such as the combustion process to motor, structural strength, vibration noise, emission aftertreatment constantly to explore, therefore, make one and meet every research topic demand, the removable development engine platform of important Parts has very important significance.
What traditional engine crankshaft main journal supporting way adopted is bearing cap formula structure, as the crankshaft support structure that patent discloses a kind of internal-combustion engine that application number is 200510118818.4, the thick portion being wherein thicker than other parts is formed in the bottom surface section of the lower surface of each axle journal supporting base, each bearing cap is assembled on this each axle journal supporting base, described bottom surface section is overlapping with the edge section of each end face on both sides, and each necked part of each bearing cap is sandwiched between these both sides.The rigid of the bottom surface section that this structure makes the stress overlapping with the rectangle part at bearing cap edge increasing each axle journal supporting base concentrate especially becomes possibility, and does not need the size of the width direction of the bearing surface of the bearing part changing each axle journal supporting base.But the maximum shortcoming of this structure is that main bearing bottom outlet cannot be repaired, and is not suitable for the motor for the purpose of different tests once crankshaft main bearing damages.
Summary of the invention
The main bearing bottom outlet existed when the present invention is directed to diesel engine test is once damage, and the defect that cannot repair in time, proposes a kind of crankshaft of diesel engine independent support module.
The technical solution adopted in the present invention is:
A kind of engine crankshaft main journal independent support module, comprises pedestal 1, lower loose piece 2, upper locating stud 3, upper loose piece 4, lower locating stud 5, lower hold-down bolt 6, upper hold-down bolt 7; Pedestal 1 and lower loose piece 2 are positioned by lower locating stud 5, lower loose piece 2 is positioned by upper locating stud 3 with upper loose piece 4; Pedestal 1 is fixedly connected with by lower hold-down bolt 6 with lower loose piece 2, and lower loose piece 2 is fixedly connected with by upper hold-down bolt 7 with upper loose piece 4; It is characterized in that: lower loose piece 2 and upper loose piece 4 are all processed with main axle bush locating slot 9; Lower loose piece 2 and upper loose piece 4 align rear formation crankshaft main bearing bottom outlet 8, inlay main axle bush in crankshaft main bearing bottom outlet 8; Main axle bush is located by main axle bush locating slot 9.
For improving the reliability of Curved shaft support, preferably arrange main bearing lubrication oil duct 10 in upper loose piece 4 inside, lubricating oil path is communicated with crankshaft main bearing bottom outlet.When diesel engine runs, lubricant oil enters crankshaft main bearing bottom outlet by main bearing lubrication oil duct 10 under the effect of external oil pump, forms lubricant film, can reduce the wearing and tearing of crankshaft main journal at the main journal place of bent axle, improves the bent axle life-span.
After installation, preferably lower housing screw 6 adopts locking mechanism to carry out locking process, and marks locking position.Common way is that locking glue is smeared at the screw thread place of lower housing screw 6, as happy safe 242 type thread locking glues; After installation, pressing down screw 6 and continuous print straight line mark as initial screw mounting point is carved on lower loose piece 2 surface, the foundation whether this mark will loosen as current check bolt, if do not broken down, lower hold-down bolt will remain impaction state.
Preferred main bearing bottom outlet 8 is obtained with upper loose piece 4 Combined machining by pedestal 1, lower loose piece 2, ensures machining accuracy, and the installation avoiding processing error to bring difficulty, running vibration even cause security incident greatly.
After bent axle independent support module installed by motor, bent axle is except rotary freedom, also has the degrees of freedom of an axial motion, the motion of this degrees of freedom should be avoided when engine running, otherwise will security incident be caused, therefore preferably in bent axle independent support module, crankshaft thrust collar is installed, overcomes the axial motion of bent axle.
Beneficial effect of the present invention: bent axle independent support modular device, flexible replacing and the reparation of single-cylinder engine crankshaft main bearing bottom outlet can be realized, have and simple, that fault treatment is easy, experimentation cost is changed conveniently, saved to motor important Parts feature is installed, improve convertibility and the recoverability of test single-cylinder engine important Parts.
Accompanying drawing explanation
Fig. 1 is crankshaft main journal independent support module installation diagram
Fig. 2 is lower loose piece sectional view
Fig. 3 is lower loose piece worm's eye view
Fig. 4 is upper loose piece plan view
Fig. 5 is upper loose piece plan view
Fig. 6 is crankshaft main journal independent support module explosive view
Embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Adopt locating stud 5 location and installation between lower loose piece 2 and pedestal 1, by lower housing screw 6, lower loose piece 2 is compressed with pedestal 1 after installation; After lower loose piece 2 compresses with pedestal 1, lower housing screw 6 adopts locking mechanism to carry out locking process, and mark locking position, the foundation whether this mark will loosen as housing screw under current check 6, if do not broken down, lower hold-down bolt 6 will remain impaction state; Upper loose piece 4, lower loose piece 2 are processed with main axle bush locating slot 9, are located by upper locating stud 3 between upper loose piece 4 and lower loose piece 2, and utilize upper hold-down bolt 7 to compress; After upper loose piece compresses, upper loose piece 4, lower loose piece 2 are carried out Combined machining with pedestal 1, and machining spindle holds bottom outlet 8; Remove upper loose piece 4 after processing main bearing bottom outlet, upper loose piece 4 is compressed after main axle bush and bent axle are installed, namely complete crankshaft main journal independent support module and install.
The lubrication of main journal adopts main bearing lubrication oil duct 10 to lubricate, and connects crankshaft main journal lubricating oil path, per pass main bearing all independent lubricatings; Lubricant oil will enter between main bearing journal clearance from upper loose piece, realize the Cooling and Lubricator to main bearing.As motor breaks down, after crankshaft main journal sustains damage, impaired support loose piece is removed, again Combined machining is carried out to crankshaft main journal bottom outlet, realizes the repair to main journal bottom outlet.
Claims (1)
1. an engine crankshaft main journal independent support module, comprises pedestal (1), lower loose piece (2), upper locating stud (3), upper loose piece (4), lower locating stud (5), lower hold-down bolt (6), upper hold-down bolt (7); Pedestal (1) and lower loose piece (2) are positioned by lower locating stud (5), lower loose piece (2) is positioned by upper locating stud (3) with upper loose piece (4); Pedestal (1) is fixedly connected with by lower hold-down bolt (6) with lower loose piece (2), and lower loose piece (2) is fixedly connected with by upper hold-down bolt (7) with upper loose piece (4); It is characterized in that: lower loose piece (2) and upper loose piece (4) are all processed with main axle bush locating slot (9); Lower loose piece (2) and upper loose piece (4) align rear formation crankshaft main bearing bottom outlet (8), and crankshaft main bearing bottom outlet inlays main axle bush in (8); Main axle bush is by main axle bush locating slot (9) location; Upper loose piece (4) inside arranges main bearing lubrication oil duct (10), and lubricating oil path is communicated with crankshaft main bearing bottom outlet; Lower hold-down bolt (6) adopts locking mechanism to carry out locking process, and marks locking position; Described crankshaft main bearing bottom outlet (8) is obtained with upper loose piece (4) Combined machining by pedestal (1), lower loose piece (2); Engine crankshaft main journal independent support module installs crankshaft thrust collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384374.3A CN103423314B (en) | 2013-08-28 | 2013-08-28 | A kind of engine crankshaft main journal independent support module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384374.3A CN103423314B (en) | 2013-08-28 | 2013-08-28 | A kind of engine crankshaft main journal independent support module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103423314A CN103423314A (en) | 2013-12-04 |
| CN103423314B true CN103423314B (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310384374.3A Active CN103423314B (en) | 2013-08-28 | 2013-08-28 | A kind of engine crankshaft main journal independent support module |
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| Country | Link |
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| CN (1) | CN103423314B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059156A (en) * | 2019-12-25 | 2020-04-24 | 芜湖航瑞航空动力产业技术研究院有限公司 | Engine main bearing seat |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312159B1 (en) * | 1998-12-16 | 2001-11-06 | Honda Giken Kogyo Kabushiki Kaisha | Bearing metal positioning structure in a split connecting rod |
| EP1321656B1 (en) * | 2001-12-21 | 2007-02-14 | Ford Global Technologies, LLC | Main bearing cap for internal combustion engines |
| CA2544092A1 (en) * | 2006-04-19 | 2007-10-19 | Richard S. Knight | Marine split bearings with right angle removeable grooved retainer covers |
| CN202326758U (en) * | 2011-11-18 | 2012-07-11 | 曹泽通 | Sliding bearing pedestal |
| CN202468725U (en) * | 2011-12-01 | 2012-10-03 | 沪东重机有限公司 | Low-speed diesel engine sprocket box camshaft bearing |
| CN202914552U (en) * | 2012-10-29 | 2013-05-01 | 方巧丽 | Sliding bearing with heat dissipation effect |
-
2013
- 2013-08-28 CN CN201310384374.3A patent/CN103423314B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312159B1 (en) * | 1998-12-16 | 2001-11-06 | Honda Giken Kogyo Kabushiki Kaisha | Bearing metal positioning structure in a split connecting rod |
| EP1321656B1 (en) * | 2001-12-21 | 2007-02-14 | Ford Global Technologies, LLC | Main bearing cap for internal combustion engines |
| CA2544092A1 (en) * | 2006-04-19 | 2007-10-19 | Richard S. Knight | Marine split bearings with right angle removeable grooved retainer covers |
| CN202326758U (en) * | 2011-11-18 | 2012-07-11 | 曹泽通 | Sliding bearing pedestal |
| CN202468725U (en) * | 2011-12-01 | 2012-10-03 | 沪东重机有限公司 | Low-speed diesel engine sprocket box camshaft bearing |
| CN202914552U (en) * | 2012-10-29 | 2013-05-01 | 方巧丽 | Sliding bearing with heat dissipation effect |
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| Publication number | Publication date |
|---|---|
| CN103423314A (en) | 2013-12-04 |
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