CN105041531B - Diesel engine high-pressure injection pump adjustable drive arrangement - Google Patents
Diesel engine high-pressure injection pump adjustable drive arrangement Download PDFInfo
- Publication number
- CN105041531B CN105041531B CN201510362272.0A CN201510362272A CN105041531B CN 105041531 B CN105041531 B CN 105041531B CN 201510362272 A CN201510362272 A CN 201510362272A CN 105041531 B CN105041531 B CN 105041531B
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- Prior art keywords
- adjustment bolt
- injection pump
- adjustment
- push rod
- pressure injection
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Abstract
The diesel engine high-pressure injection pump adjustable drive arrangement of the present invention, push rod upper end is provided with axial screw and adjustment bolt, adjustment bolt is rotated forward or backwards, the height of its upper end can be changed, locking nut is used for the height for locking adjustment bolt, base vivo wall is provided with the stopper slot of longitudinal direction, the lower end that adjustment bolt is located in the screw of push rod axial direction is provided with the stopper slot of I shape cross-section structures, one end of spacer pin is stretched into adjustment bolt stopper slot in the radial hole of push rod side, the side that the other end stretches into base vivo wall stopper slot pedestal top is provided with adjustment window, it is available for adjustment spanner to stretch into adjustment bolt and jam nut operation.When adjusting the beginning of injection of high-pressure injection pump, without repeated disassembled and assembled high-pressure injection pump, significantly reduce workload, improve efficiency.Meanwhile position limiting structure is limited to adjustment in safe range, the excessive damage for causing camshaft, high pressure fuel injector pump drive or high-pressure injection pump of adjustment is avoided.
Description
Technical field
The present invention relates to a kind of diesel engine high-pressure injection pump adjustable drive arrangement, belong to diesel engine manufacturing technology field.
Background technology
The monomer high-pressure injection pump of diesel engine is controlled by camshaft by high pressure fuel injector pump drive, high-pressure injection pump
Interior plunger is withstood on the push rod of high pressure fuel injector pump drive, i.e., plunger relative to high-pressure injection pump initial position, it is and first
Beginning, position determined the beginning of injection of high-pressure injection pump.Camshaft rotates, and drives the roller in high pressure fuel injector pump drive, pushes up
Bar etc., push rod promote the plunger upward and downward in high-pressure injection pump, realize the oil spout of high-pressure injection pump again.
Due to inevitable mismachining tolerance, the initial position for assembling back-plunger is not necessarily very good.In order to ensure bavin
The performance of oil machine, it is necessary to which take measures adjustment plunger or high-pressure injection pump up and down, by plunger relative to the initial of high-pressure injection pump
Position adjustment is to correct position.In the prior art, in high pressure fuel injector pump drive by spring lower seat, push rod, roller body,
The height for the lifting body that roller, bearing pin form is fixed.If adjust initial bit of the plunger relative to high-pressure injection pump
Put, it is necessary to back out 4 nuts of fixed high-pressure injection pump, high-pressure injection pump is pulled down, by increasing or decreasing pad, to realize post
Fill in relative to the initial position of high-pressure injection pump be beginning of injection adjustment, see accompanying drawing 1.This dismounting adjustment process generally requires
Repeatedly, and the injection pump of a high-power diesel engine is even up to as many as 20, and each injection pump has twenties kilogram weights,
More so that whole adjustment process wastes time and energy, efficiency is low.In addition, be in course of adjustment, pad is reduced, in high-pressure injection pump
Plunger will be relative to high-pressure injection pump to moving up, if the pad cut is excessive, the upward athletic meeting of plunger bumps against high pressure fuel injector
The top of pump, damage camshaft, high pressure fuel injector pump drive, high-pressure injection pump；Increase pad, the plunger in high-pressure injection pump
It will can make high pressure fuel injector pump drive jacking block and height relative to high-pressure injection pump to moving down, if increased pad is excessive
Press the plunger of injection pump to depart from, when camshaft drives high pressure fuel injector pump drive, jacking block and high-pressure injection pump can be caused
Plunger collision, impact, rough running.
The content of the invention
The purpose of the present invention is exactly to overcome the deficiency of above-mentioned prior art, there is provided a kind of diesel engine high-pressure injection pump can transfer drive
Dynamic device, it is convenient to adjust injection pump plunger initial position.
The object of the present invention is achieved like this：A kind of diesel engine high-pressure injection pump adjustable drive arrangement, roller pass through pin
Axle is mounted in the lower end of roller body, and push rod is mounted in the upper end of roller body, and cam can be present upward in vivo by roller pushing rolling wheels body
Motion, the return spring of pedestal internal upper part can be by roller body and the downward pushed home of push rod, it is characterised in that the push rod upper end
Provided with axial screw and adjustment bolt, adjustment bolt is rotated forward or backwards, can change the height of its upper end, and locking nut is used for
The height of adjustment bolt is locked, the side on the pedestal top is provided with adjustment window, is available for adjustment spanner to stretch into adjustment bolt
And jam nut operation.
In order to which the purpose of the present invention is better achieved, the base vivo wall is provided with the stopper slot of longitudinal direction, and adjustment bolt is located at
Lower end in the screw of push rod axial direction is provided with the stopper slot of I shape cross-section structures, and one end of spacer pin is stretched into the radial hole of push rod side
In adjustment bolt stopper slot, the other end stretches into base vivo wall stopper slot.
Technical scheme, when adjusting the beginning of injection of high-pressure injection pump, it is only necessary to which spanner drives from injection pump and filled
The adjustment window insertion on pedestal is put, unclamps locking nut, the length that adjustment bolt changes lifting pin is then screwed, realizes to height
The adjustment of the beginning of injection of injection pump is pressed, finally tightening locking nut again prevents adjustment bolt from loosening.Without repeated disassembled and assembled
High-pressure injection pump, significantly reduce workload, improve efficiency.Meanwhile by the limit on the stopper slot and push rod in adjustment bolt
Formed position limiting structure is sold in position, and adjustment is limited in safe range, avoids that adjustment is excessive to cause camshaft, high pressure fuel injector
The damage of pump drive or high-pressure injection pump.
Brief description of the drawings
Fig. 1 is the diesel engine high-pressure oil spout pump drive principle schematic of prior art.
Fig. 2 is the diesel engine high-pressure injection pump adjustable drive arrangement principle schematic of the embodiment of the present invention.
Fig. 3 is that the diesel engine high-pressure injection pump adjustable drive arrangement of the embodiment of the present invention adjusts operation schematic diagram.
Fig. 4 is the adjustment bolt height adjustable scope of the diesel engine high-pressure injection pump adjustable drive arrangement of the embodiment of the present invention
Schematic diagram.
In figure mark for：1- high-pressure injection pumps, 2- nuts, 3- plungers, 4- adjust pads, 5- bodies, 6- camshafts, 7- tops
Bar, 8- pedestals, 9- springs, 10- spring lower seats, 11- roller bodies, 12- bearing pins, 13- rollers, 14- adjustment bolts, 15- adjustment spiral shells
Bolt stopper slot, 16- locking nuts, 17- push rods, the window on 18- pedestals top, 19- pedestal stopper slots, 20- pedestals, 21- are spacing
Pin.22- "O"-rings, 23- springs, 24- roller bodies, 25- spanners.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Referring to accompanying drawing 2, the diesel engine high-pressure injection pump adjustable drive arrangement of the present embodiment, roller 13 is mounted in by bearing pin 12
The lower end of roller body 24, push rod 17 are mounted in the upper end of roller body 24, and cam can be by the pushing rolling wheels body 24 of roller 13 in pedestal 20
Interior motion upwards.The return spring 23 of the internal upper part of pedestal 20 can be by 17 downward pushed home of roller body 24 and push rod.On push rod 17
End is provided with axial screw and adjustment bolt 14, rotates adjustment bolt 14 forward or backwards, can change the height of its upper end.Locking screw
Mother 16 is used for the height for locking adjustment bolt 16.The inwall of pedestal 20 is provided with the stopper slot 19 of longitudinal direction, and adjustment bolt 14 is located at push rod
Lower end in 17 axial screws is provided with the stopper slot 15 of I shape cross-section structures, one end of spacer pin 21 in the side radial hole of push rod 17
Stretch into adjustment bolt stopper slot 15, the other end stretches into the inwall stopper slot 19 of pedestal 20.The side on the top of pedestal 20 is provided with window
18, it is available for adjustment spanner to stretch into adjustment bolt 14 and the operation of jam nut 16.
Referring to accompanying drawing 3, when need to adjust plunger 3 relative to high-pressure injection pump initial position i.e. beginning of injection when, by one
Window 18 of the spanner 25 from pedestal inserts, and unscrews locking nut 16, another spanner screw adjustment bolt 14 to increase or
Reduce the height for the component being made up of adjustment bolt 14 and push rod 17, also just have adjusted plunger 3 relative to the first of high-pressure injection pump
Beginning position.Push rod 17 is blocked in the inwall stopper slot 19 of pedestal 20 in one end of spacer pin 21 in the process, so push rod 17
Will not and then it rotate.After highly adjusting, it is fixed to screw the spanner of adjustment bolt 14, and locking screw is tightened with another spanner
Mother 16, such adjustment bolt 14, locking nut 16 and push rod 17 constitute locking, will not pine between adjustment bolt 14 and push rod 17
It is dynamic.
Referring to accompanying drawing 4, adjustment bolt 14 is screwed upwards, when spacer pin 21 is withstood in the bottom of stopper slot 15 of adjustment bolt 14
When, the height of the component of adjustment bolt 14 and the composition of push rod 17 reaches maximum L1, and now motion will not bump against height to plunger 3 upwards
The top of injection pump is pressed, ensures that camshaft 6, high pressure fuel injector pump drive, high pressure spray will not be damaged because of the adjustment of mistake
Oil pump 1.Adjustment bolt 14 is screwed downwards, when spacer pin 21 is withstood in the bottom of stopper slot 15 of adjustment bolt 14, adjustment bolt 14
The height of the component formed with push rod 17 reaches minimum value L2, and now adjustment bolt 14 will not be de- with the plunger 3 of high-pressure injection pump
From.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (2)
1. a kind of diesel engine high-pressure injection pump adjustable drive arrangement, roller is mounted in the lower end of roller body by bearing pin, and push rod is mounted in
The upper end of roller body, cam can be by the present motions upwards in vivo of roller pushing rolling wheels body, and the return spring of pedestal internal upper part can
By roller body and the downward pushed home of push rod, it is characterised in that the push rod upper end is provided with axial screw and adjustment bolt, positive
Or adjustment bolt is rotated backward, the height of its upper end can be changed, locking nut is used for the height for locking adjustment bolt, the pedestal
Inwall is provided with the stopper slot of longitudinal direction, and the lower end that adjustment bolt is located in the screw of push rod axial direction is provided with the stopper slot of I shape cross-section structures,
One end of spacer pin is stretched into adjustment bolt stopper slot in the radial hole of push rod side, and the other end stretches into base vivo wall stopper slot.
2. diesel engine high-pressure injection pump adjustable drive arrangement according to claim 1, it is characterised in that the pedestal top
Side be provided with adjustment window, be available for adjust spanner stretch into adjustment bolt and jam nut operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362272.0A CN105041531B (en) | 2015-06-26 | 2015-06-26 | Diesel engine high-pressure injection pump adjustable drive arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362272.0A CN105041531B (en) | 2015-06-26 | 2015-06-26 | Diesel engine high-pressure injection pump adjustable drive arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041531A CN105041531A (en) | 2015-11-11 |
| CN105041531B true CN105041531B (en) | 2017-12-29 |
Family
ID=54448419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510362272.0A Expired - Fee Related CN105041531B (en) | 2015-06-26 | 2015-06-26 | Diesel engine high-pressure injection pump adjustable drive arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105041531B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB548763A (en) * | 1940-05-07 | 1942-10-23 | Saurer Ag Adolph | Improvements in or relating to injection pumps for internal combustion engines |
| CN85205183U (en) * | 1985-12-03 | 1987-07-29 | 袁洪生 | Multi-functional standard fuel injecting pump |
| CN2771501Y (en) * | 2004-12-31 | 2006-04-12 | 江西汇尔油泵油嘴有限公司 | Two-cylinder line-up oil injection pump for diesel engine |
| CN200982258Y (en) * | 2006-11-13 | 2007-11-28 | 中国北车集团北京南口机车车辆机械厂 | Fuel injection pump lower body |
| CN201513271U (en) * | 2009-09-18 | 2010-06-23 | 广东力源液压机械有限公司 | High pressure fuel pump used for diesel pile hammer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4034944B2 (en) * | 2001-04-09 | 2008-01-16 | ダイハツディーゼル株式会社 | Fuel injection pump tappet device |
-
2015
- 2015-06-26 CN CN201510362272.0A patent/CN105041531B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB548763A (en) * | 1940-05-07 | 1942-10-23 | Saurer Ag Adolph | Improvements in or relating to injection pumps for internal combustion engines |
| CN85205183U (en) * | 1985-12-03 | 1987-07-29 | 袁洪生 | Multi-functional standard fuel injecting pump |
| CN2771501Y (en) * | 2004-12-31 | 2006-04-12 | 江西汇尔油泵油嘴有限公司 | Two-cylinder line-up oil injection pump for diesel engine |
| CN200982258Y (en) * | 2006-11-13 | 2007-11-28 | 中国北车集团北京南口机车车辆机械厂 | Fuel injection pump lower body |
| CN201513271U (en) * | 2009-09-18 | 2010-06-23 | 广东力源液压机械有限公司 | High pressure fuel pump used for diesel pile hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105041531A (en) | 2015-11-11 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20190626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |