CN103047065B - Pressing device for diesel injector - Google Patents
Pressing device for diesel injector Download PDFInfo
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- CN103047065B CN103047065B CN201210583302.7A CN201210583302A CN103047065B CN 103047065 B CN103047065 B CN 103047065B CN 201210583302 A CN201210583302 A CN 201210583302A CN 103047065 B CN103047065 B CN 103047065B
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- diesel injector
- sleeve
- hold down
- swivel nut
- down gag
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Abstract
The invention discloses a pressing device which comprises a barrel and a positioning part. The barrel is fixed to a diesel injector through an axial retainer ring, one end of the positioning part is fixed to the diesel injector, and the other end of the positioning part is fixed to a body of a diesel. Therefore, down moving and pressing of the diesel injector can be realized by screwing the barrel, the injector cannot rotate along with screwing of the barrel during pressing as the injector is fixed onto the body of the diesel through the positioning part, and positioning during pressing of the injector is realized. Accordingly, rotation of the injector during screwing is avoided, and precision and efficiency in pressing of the injector are improved.
Description
Technical field
The present invention relates to diesel engine supplementary equipment technical field, particularly a kind of hold down gag for diesel injector.
Background technique
Oil sprayer is the critical component of diesel engine, needs by hold down gag oil sprayer is fastening in installation process.
The compression mode of traditional oil sprayer is generally briquetting and compresses mode, and this kind of compression mode easily causes impacting force deflection, thereby causes oil sprayer sealed bottom not tight, therefore, and the modes of gland nut as oil sprayer clamping that adopt at present more.The hold down gag that gland nut compresses mode comprises gland nut and Steel Cable Baffle Ring composition, gland nut links together by Steel Cable Baffle Ring and oil sprayer, when screwing in downwards, gland nut oil sprayer is also moved down Steel Cable Baffle Ring being pressed in the groove on oil sprayer tightly, and then by oil sprayer clamping.
Adopt the compression mode of gland nut to compress for screwing in progressively, oil sprayer meeting transfer in rundown process, cannot ensure to compress the orientation angle of rear oil sprayer, cause the return opening on oil sprayer to align assembling with oil sprayer return tube, often need repeated multiple times dismounting, adjust the angle that just can obtain wanting, the workload that had both increased assembly crewman also greatly reduces working efficiency; Simultaneously, in assembly process, cannot position oil sprayer, just before tightening, oil sprayer return opening is rotated to certain advancement amount, rough control return opening reaches the angle of anticipation after oil sprayer is tightened, because being by virtue of experience estimates advancement amount, and the transfer angle of oil sprayer is not identical in each rundown process, assembly precision is lower.
Therefore, how to realize the location in oil sprayer clamping process, thereby avoid oil sprayer generation transfer in rundown process, improve precision and the efficiency of oil sprayer clamping frock, need the problem of solution with regard to becoming those skilled in the art badly.
Summary of the invention
The object of this invention is to provide a kind of hold down gag for diesel injector, it can realize the location in oil sprayer clamping process, thereby has avoided the oil sprayer transfer phenomenon occurring in rundown process, has improved precision and the efficiency of oil sprayer clamping frock.
For solving the problems of the technologies described above, the invention provides a kind of hold down gag for diesel injector, comprise the swivel nut that is fixed on described diesel injector by axial back-up ring, also comprise positioning element, described diesel injector is fixed in one end of described positioning element, and its other end is fixed on the body of diesel engine.
Preferably, described positioning element comprises connecting rod, and the first end of described connecting rod is provided with draw-in groove, and described draw-in groove is installed in the head of described diesel injector.
Preferably, the interior loop-shaped of described draw-in groove is identical with the outer loop-shaped of the head of described diesel injector, and the madial wall of described draw-in groove and the outer side wall of described head fit.
Preferably, the second end of described connecting rod is provided with installing ring, and described installing ring is set with and is fixed on the tightening nut of rocker arm bracket of described body.
Preferably, the interior loop-shaped of described installing ring and the outer loop-shaped of described tightening nut match, and the madial wall of described installing ring and the outer side wall of described tightening nut fit.
Preferably, also comprise the sleeve that is set with and is fixed on described swivel nut, described sleeve is in the axial direction higher than described swivel nut.
Preferably, described sleeve set is in the periphery of described swivel nut, described sleeve lateral wall has opening, one end of described positioning element is through described opening and be fixed on the head of described diesel injector, and described opening is greater than described positioning element at described sleeve footpath width upwards and divides the width upwards the party in described open interior.
Preferably, the axial length range of described opening is 30mm～50mm.
Preferably, described sleeve is connected with described swivel nut by assembly department, and the interior loop-shaped of described assembly department is identical with the outer loop-shaped of described swivel nut, and the madial wall of described assembly department and the outer side wall of described swivel nut fit.
Preferably, described sleeve offers square groove away from the inwall of described swivel nut one end.
Hold down gag provided by the present invention is for the compression of diesel injector, this hold down gag comprises swivel nut and positioning element, and wherein, swivel nut is fixed on diesel injector by axial back-up ring, diesel injector is fixed in one end of positioning element, and its other end is fixed on the body of diesel engine; Like this, realize the compression that moves down of oil sprayer by tightening swivel nut, in compaction process, because oil sprayer is fixed on by positioning element on the body of diesel engine, can not rotate along with screwing of swivel nut, realize the location in oil sprayer clamping process, thereby avoided the oil sprayer transfer phenomenon occurring in rundown process, improved precision and the efficiency of oil sprayer clamping frock.
In a kind of embodiment, the positioning element of hold down gag provided by the present invention comprises connecting rod, and the first end of this connecting rod is provided with draw-in groove, and draw-in groove is installed in the head of diesel injector; Like this, clamp the head that is fixed on diesel injector by draw-in groove, structure is comparatively simple, and fixing reliable.
In another kind of embodiment, hold down gag provided by the present invention also comprises sleeve, and sleeve set is also fixed on swivel nut, and sleeve is in the axial direction higher than swivel nut; Because oil sprayer projection ratio is higher, and all need to install the parts such as valve spring around it, installing space is very narrow and small, and common open-end wrench cannot stretch into and tighten, and increases the height of swivel nut, so that tighten operation by above-mentioned sleeve is set.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of hold down gag provided by the present invention;
Fig. 2 is the structural representation of a kind of preferred implementation of positioning element provided by the present invention;
Fig. 3 is the structural representation of a kind of embodiment of sleeve provided by the present invention.
Embodiment
Core of the present invention is to provide a kind of hold down gag for diesel injector, and it can realize the location in oil sprayer clamping process, thereby has avoided the oil sprayer transfer phenomenon occurring in rundown process, has improved precision and the efficiency of oil sprayer clamping frock.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of hold down gag provided by the present invention.
In a kind of embodiment, hold down gag provided by the present invention is for the compression of diesel injector, this hold down gag comprises swivel nut and positioning element 2, wherein, swivel nut is fixed on diesel injector 1 by axial back-up ring, diesel injector 1 is fixed in one end of positioning element 2, and its other end is fixed on the body 3 of diesel engine; Like this, realize the compression that moves down of oil sprayer 1 by tightening swivel nut, in compaction process, because oil sprayer 1 is fixed on by positioning element 2 on the body 3 of diesel engine, can not rotate along with screwing of swivel nut, realize the location in oil sprayer 1 compaction process, thereby avoided oil sprayer 1 transfer phenomenon occurring in rundown process, improved precision and the efficiency of oil sprayer 1 compression tooling.
From theory, any appropriate location of diesel injector 1 can be fixed in one end of above-mentioned positioning element 2, for example, as long as can ensure being fixedly connected with of positioning element 2 and diesel injector 1,, can be connected in middle part, the bottom etc. of head or the oil sprayer 1 of oil sprayer 1; Preferably, one end of positioning element 2 is connected in the head of oil sprayer 1, because the head of oil sprayer 1 exposes, is convenient to installation and the connection of positioning element 2.
Same, the other end of positioning element 2 can be fixed on any appropriate location of diesel-engine body 3, as long as can ensure being fixedly connected with of positioning element 2 and body 3, and then in compaction process, ensure that diesel injector 1 is fixing with the relative position of body 3, for example, be installed on the arbitrary position of the close oil sprayer 1 of body 3, preferably, be installed on the tightening nut of rocker arm bracket of body 3, so that the installation of positioning element 2 and fixing.
The structure of above-mentioned positioning element 2 can have multiple, as long as can realize being connected of oil sprayer 1 and body 3, for example, can be platy structure or connecting rod etc.
Please refer to Fig. 2, Fig. 2 is the structural representation of a kind of preferred implementation of positioning element provided by the present invention.
Preferably, positioning element 2 is connecting rod 21, and the first end of connecting rod 21 is provided with draw-in groove 22, and draw-in groove 22 is installed in the head of oil sprayer 1; Like this, clamp the head that is fixed on diesel injector 1 by draw-in groove 22, structure is comparatively simple, and fixing reliable; Meanwhile, the mode that uses draw-in groove 22 to clamp is installed on positioning element 2 on the head of oil sprayer 1, without the existing structure that changes oil sprayer 1.
From theory, be also not limited to the head that by the mode of draw-in groove 22, positioning element 2 is fixed on to oil sprayer 1, both modes that is fixedly connected with also can in related domain conventional use other be fixedly connected with mode, such as bearing pin connection etc.
The interior loop-shaped of above-mentioned draw-in groove 22 is identical with the outer loop-shaped of the head of diesel injector 1, and the madial wall of draw-in groove 22 and the outer side wall of head fit, so that draw-in groove 22 and oil sprayer 1 head are fixing and coordinate better, improves both connection reliability.
The second end of above-mentioned connecting rod 21 is also provided with installing ring 23, and this installing ring 23 is set with and is fixed on the tightening nut of rocker arm bracket of body 3, so that the installation of positioning element 2.
The interior loop-shaped of installing ring 23 and the outer loop-shaped of tightening nut match, and the madial wall of installing ring 23 and the outer side wall of tightening nut fit, so that installing ring 23 and tightening nut are fixing and coordinate better, improve both connection reliability.
The inner ring of above-mentioned installing ring can be circular, and the inner ring of installing ring coordinates with nut outer ring maximum diameter circle and realizes and fix object.
Preferably, one end of above-mentioned connecting rod 21 arranges draw-in groove 22, and the other end arranges installing ring 23, and two ends are installed on the head of oil sprayer 1, are installed on tightening nut by installing ring 23 by draw-in groove 22 respectively; Apparently, be also not limited to above-mentioned form, draw-in groove 22 or installing ring 23 also can be only set on connecting rod 21.
Please refer to Fig. 3, and please also refer to Fig. 1, Fig. 3 is the structural representation of a kind of embodiment of sleeve provided by the present invention.
In another kind of embodiment, hold down gag provided by the present invention also comprises sleeve 4, and sleeve 4 is set with and is fixed on swivel nut, and sleeve 4 is in the axial direction higher than swivel nut; Because oil sprayer 1 projection ratio is higher, and all need to install the parts such as valve spring around it, installing space is very narrow and small, and common open-end wrench cannot stretch into and tighten, and increases the height of swivel nut, so that tighten operation by above-mentioned sleeve 4 is set.
Above-mentioned sleeve 4 can be set in the periphery of swivel nut, and sleeve 4 sidewalls have opening 41, and one end of positioning element 2 is passed opening 41 and is fixed on the head of diesel injector 1, and the radial width of opening 41 is greater than the width of positioning element 2 in opening 41 interior parts; The periphery that sleeve 4 is set in screw rod can be convenient to the dismounting of sleeve 4, now, in order to ensure one end of positioning element 2 and being connected of oil sprayer 1, offers the opening 41 that can hold positioning element 2 connecting ends at the sidewall of sleeve 4.
The axial length range of opening 41 is 30mm～50mm, is preferably 40mm, to ensure passing through of positioning element 2 in the situation that not affecting sleeve 4 usability.
The radial width of above-mentioned opening 41 should be tried one's best larger in the situation that not affecting sleeve semi-finals degree, this is due in compaction process, sleeve 4 is along with swivel nut rotates, and positioning element 2 maintains static, sleeve 4 upwards has certain amounts of rotation with respect to positioning element 2 in its footpath, in the time that sleeve 4 turns to the position that is resisted against positioning element 2, sleeve 4 need to be taken off and rotates backward; The radial width that suitably increases opening 41 can provide larger rotation space for sleeve 4, reduces the number of times that sleeve 4 takes off, and improves and compresses working efficiency.
Sleeve 4 is connected with described swivel nut by assembly department, and the interior loop-shaped of assembly department is identical with the outer loop-shaped of swivel nut, and the madial wall of assembly department and the outer side wall of swivel nut fit, to improve the installation reliability of sleeve 4 and swivel nut.
Sleeve 4 offers square groove 42 away from the inwall of swivel nut one end, so that the installation of spanner.
Below taking above-mentioned embodiment as example, simply introduce the operating process of hold down gag provided by the present invention: first, oil sprayer 1 is in place, use positioning element 2 to adjust oil sprayer 1 return opening angle, till gland nut pretension extremely cannot be rotated, then take off positioning element 2, sleeve 4 is inserted in to swivel nut, positioning element 2 is passed to opening 41 places of sleeve 4 in the process of being inserted in, and one end of positioning element 2 is enclosed within on 45 ° of inclined-planes of oil sprayer 1 head, the other end is enclosed within on rocker arm bracket tightening nut by installing ring 23, finally sleeve 4 and swivel nut are worked good, use spanner to insert in the square groove 42 of sleeve 4 heads, tighten gland nut, if opening 41 sides of sleeve 4 and positioning element 2 prop up and cause cannot continuing to tighten in rundown process, only sleeve 4 need be mentioned and made it to separate with gland nut, again toward opposite spin, adjust opening 41 sides and positioning element 2 distances, can continue to tighten gland nut is tightened to after prescribed torque, taking off tool.
Above a kind of hold down gag for diesel injector provided by the present invention is described in detail.Applied specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall within the scope of protection of the present invention.
Claims (9)
1. the hold down gag for diesel injector, comprise the swivel nut that is fixed on described diesel injector (1) by axial back-up ring, it is characterized in that, also comprise positioning element (2), described diesel injector (1) is fixed in one end of described positioning element (2), and its other end is fixed on the body (3) of diesel engine;
Also comprise the sleeve (4) being set with and be fixed on described swivel nut, described sleeve (4) is in the axial direction higher than described swivel nut.
2. the hold down gag for diesel injector according to claim 1, it is characterized in that, described positioning element (2) comprises connecting rod (21), the first end of described connecting rod (21) is provided with draw-in groove (22), and described draw-in groove (22) is installed in the head of described diesel injector (1).
3. the hold down gag for diesel injector according to claim 2, it is characterized in that, the interior loop-shaped of described draw-in groove (22) is identical with the outer loop-shaped of the head of described diesel injector (1), and the madial wall of described draw-in groove (22) and the outer side wall of described head fit.
4. the hold down gag for diesel injector according to claim 2, it is characterized in that, the second end of described connecting rod (21) is provided with installing ring (23), and described installing ring (23) is set with and is fixed on the tightening nut of rocker arm bracket of described body (3).
5. the hold down gag for diesel injector according to claim 4, it is characterized in that, the interior loop-shaped of described installing ring (23) and the outer loop-shaped of described tightening nut match, and the madial wall of described installing ring (23) and the outer side wall of described tightening nut fit.
6. according to the hold down gag for diesel injector described in claim 1 to 5 any one, it is characterized in that, described sleeve (4) is set in the periphery of described swivel nut, described sleeve (4) sidewall has opening (41), one end of described positioning element (2) is through described opening (41) and be fixed on the head of described diesel injector (1), and described opening (41) described sleeve (4) footpath width be upwards greater than described positioning element (2) in described opening (41) in partly at the party's width upwards.
7. the hold down gag for diesel injector according to claim 6, is characterized in that, the axial length range of described opening (41) is 30mm～50mm.
8. the hold down gag for diesel injector according to claim 6, it is characterized in that, described sleeve (4) is connected with described swivel nut by assembly department, the interior loop-shaped of described assembly department is identical with the outer loop-shaped of described swivel nut, and the madial wall of described assembly department and the outer side wall of described swivel nut fit.
9. according to the hold down gag for diesel injector described in claim 1 to 5 any one, it is characterized in that, described sleeve (4) offers square groove (42) away from the inwall of described swivel nut one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583302.7A CN103047065B (en) | 2012-12-28 | 2012-12-28 | Pressing device for diesel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583302.7A CN103047065B (en) | 2012-12-28 | 2012-12-28 | Pressing device for diesel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103047065A CN103047065A (en) | 2013-04-17 |
| CN103047065B true CN103047065B (en) | 2014-12-10 |
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ID=48059858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210583302.7A Active CN103047065B (en) | 2012-12-28 | 2012-12-28 | Pressing device for diesel injector |
Country Status (1)
| Country | Link |
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| CN (1) | CN103047065B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841873B (en) * | 2016-03-23 | 2019-08-27 | 潍柴动力股份有限公司 | A kind of test macro and method of high-tension connector pressing force |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA72449B (en) * | 1971-02-05 | 1972-10-25 | Cav Ltd | Fuel injector |
| DE2901210C2 (en) * | 1979-01-13 | 1984-01-12 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Method for operating an air-compressing, self-igniting internal combustion engine |
| DE10027662A1 (en) * | 2000-06-03 | 2001-12-06 | Bosch Gmbh Robert | Sealing unit for a fuel injection valve in a cylider head bore comprises a main body with an axial bore with an enlarged section which accommodates a sealing element |
| JP2004360586A (en) * | 2003-06-05 | 2004-12-24 | Mitsubishi Electric Corp | Fuel injection valve device for injection inside cylinder |
| CN201582023U (en) * | 2009-12-18 | 2010-09-15 | 安徽全柴集团有限公司 | Device for fixing and clamping fuel injector of diesel engine |
| CN202091079U (en) * | 2011-03-31 | 2011-12-28 | 三阳工业股份有限公司 | Fixing structure for locomotive oil supply system |
| CN102562396A (en) * | 2012-01-11 | 2012-07-11 | 清华大学 | Diesel engine oil injector hold-down device |
| CN203009131U (en) * | 2012-12-28 | 2013-06-19 | 潍柴动力股份有限公司 | Pressing device for diesel injector |
-
2012
- 2012-12-28 CN CN201210583302.7A patent/CN103047065B/en active Active
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| CN103047065A (en) | 2013-04-17 |
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