CN103047065A - Pressing device for diesel injector - Google Patents
Pressing device for diesel injector Download PDFInfo
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- CN103047065A CN103047065A CN2012105833027A CN201210583302A CN103047065A CN 103047065 A CN103047065 A CN 103047065A CN 2012105833027 A CN2012105833027 A CN 2012105833027A CN 201210583302 A CN201210583302 A CN 201210583302A CN 103047065 A CN103047065 A CN 103047065A
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- diesel injector
- hold down
- down gag
- sleeve
- swivel nut
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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, in installation process, needs by hold down gag oil sprayer is fastening.
The compression mode of traditional oil sprayer is generally briquetting and compresses mode, and this kind of compression mode easily causes the impacting force deflection, thereby causes the oil sprayer sealed bottom not tight, and therefore, many employing gland nuts are as the modes of oil sprayer clamping at present.The hold down gag that gland nut compresses mode comprises that gland nut and Steel Cable Baffle Ring form, gland nut links together by Steel Cable Baffle Ring and oil sprayer, when gland nut screws in downwards by Steel Cable Baffle Ring being pressed in the groove on oil sprayer oil sprayer also moved down 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, can't guarantee to compress the orientation angle of rear oil sprayer, cause the return opening on oil sprayer to align assembling with the oil sprayer return tube, often need repeated multiple times dismounting, adjust the angle that just can obtain wanting, the workload that had both increased the assembly crewman also greatly reduces working efficiency; Simultaneously, in assembly process, can't position oil sprayer, just before tightening, the 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 in each rundown process, the transfer angle of oil sprayer is not identical, assembly precision is lower.
Therefore, how to realize the location in the 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 purpose of this invention is to provide a kind of hold down gag for diesel injector, it can realize the location in the oil sprayer clamping process, thereby has avoided the oil sprayer transfer phenomenon occurred in the 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 in described diesel injector by axial back-up ring, also comprise positioning element, one end of described positioning element is fixed in described diesel injector, and its other end is fixed in 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 outer side wall of the madial wall of described draw-in groove and described head fits.
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 are complementary, and the outer side wall of the madial wall of described installing ring and described tightening nut fits.
Preferably, also comprise the sleeve that is set with and is fixed in 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 in the head of described diesel injector, and the width that makes progress in described sleeve footpath of described opening is greater than described positioning element and divides the width made progress 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 outer side wall of the madial wall of described assembly department and described swivel nut fits.
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 in diesel injector by axial back-up ring, one end of positioning element is fixed in diesel injector, and its other end is fixed in the body of diesel engine; Like this, realize the compression that moves down of oil sprayer by tightening swivel nut, in compaction process, due to oil sprayer, by positioning element, be fixed on the body of diesel engine, can not rotate along with screwing of swivel nut, the location of realization in the oil sprayer clamping process, thus the oil sprayer transfer phenomenon occurred in the rundown process avoided, 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 in 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 also is fixed in swivel nut, and sleeve is in the axial direction higher than swivel nut; Because the 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 can't stretch into and be tightened, and increases the height of swivel nut by above-mentioned sleeve is set, so that tighten operation.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of embodiment of hold down gag provided by the present invention;
The structural representation that Fig. 2 is a kind of preferred implementation of positioning element provided by the present invention;
The structural representation that Fig. 3 is 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 the oil sprayer clamping process, thereby has avoided the oil sprayer transfer phenomenon occurred in the 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, the structural representation that Fig. 1 is 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 in diesel injector 1 by axial back-up ring, one end of positioning element 2 is fixed in diesel injector 1, and its other end is fixed in 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, due to oil sprayer 1, by positioning element 2, be fixed on the body 3 of diesel engine, can not rotate along with screwing of swivel nut, the location of realization in oil sprayer 1 compaction process, thus oil sprayer 1 transfer phenomenon occurred in the rundown process avoided, improved precision and the efficiency of oil sprayer 1 compression tooling.
From theory, one end of above-mentioned positioning element 2 can be fixed in any appropriate location of diesel injector 1, as long as can guarantee being fixedly connected with of positioning element 2 and diesel injector 1, for example, can be connected in middle part, bottom of the head of oil sprayer 1 or oil sprayer 1 etc.; Preferably, an 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 in any appropriate location of diesel-engine body 3, as long as can guarantee being fixedly connected with of positioning element 2 and body 3, and then, in compaction process, guarantee that diesel injector 1 gets final product with the relative position of body 3 is fixing, 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, such as thinking platy structure or connecting rod etc.
Please refer to Fig. 2, the structural representation that Fig. 2 is 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 in diesel injector 1 by draw-in groove 22, structure is comparatively simple, and fixing reliable; Simultaneously, the mode of using 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, the mode also be not limited to by draw-in groove 22 is fixed in positioning element 2 on the head of 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 the 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 outer side wall of the madial wall of draw-in groove 22 and head fits, 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 also is 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 are complementary, and the outer side wall of the madial wall of installing ring 23 and tightening nut fits, 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 circle, and the inner ring of installing ring coordinates and realizes that fixedly purpose gets final product with nut outer ring maximum diameter circle.
Preferably, an end of above-mentioned connecting rod 21 arranges draw-in groove 22, and the other end arranges installing ring 23, two ends respectively by draw-in groove 22 be installed on oil sprayer 1 head, by installing ring 23, be installed on tightening nut; Apparently, also be not limited to above-mentioned form, on connecting rod 21, also draw-in groove 22 or installing ring 23 can only be set.
Please refer to Fig. 3, and please in the lump with reference to figure 1, the structural representation that Fig. 3 is 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 in 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 can't stretch into and be tightened, and increases the height of swivel nuts by above-mentioned sleeve 4 is set, so that tighten operation.
Above-mentioned sleeve 4 can be set in the periphery of swivel nut, and sleeve 4 sidewalls have opening 41, and an end of positioning element 2 passes opening 41 and is fixed in 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 guarantee an 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, in order to guarantee passing through of positioning element 2 in the situation that do not affect sleeve 4 usabilities.
The radial width of above-mentioned opening 41 should be in the situation that not affect sleeve semi-finals degree as far as possible larger, 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, when 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 offers square groove 42 away from the inwall of swivel nut one end, so that the installation of spanner.
Below take above-mentioned embodiment as example, simply introduce the operating process of hold down gag provided by the present invention: at first, oil sprayer 1 is in place, use positioning element 2 to adjust oil sprayer 1 return opening angle, till the gland nut pretension extremely can't 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 an 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 the 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 in rundown process, opening 41 sides of sleeve 4 and positioning element 2 prop up and cause can't continuing to tighten, 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, after can continuing to tighten gland nut being tightened to prescribed torque, taking off tool gets final product.
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 in the protection domain of the claims in the present invention.
Claims (10)
1. the hold down gag for diesel injector, comprise the swivel nut that is fixed in described diesel injector (1) by axial back-up ring, it is characterized in that, also comprise positioning element (2), one end of described positioning element (2) is fixed in described diesel injector (1), and its other end is fixed in the body (3) of diesel engine.
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), and 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 are complementary, and the madial wall of described installing ring (23) and the outer side wall of described tightening nut fit.
6. according to the described hold down gag for diesel injector of claim 1 to 5 any one, it is characterized in that, also comprise the sleeve (4) that is set with and is fixed in described swivel nut, described sleeve (4) is in the axial direction higher than described swivel nut.
7. the hold down gag for diesel injector according to claim 6, 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) passes described opening (41) and is fixed in the head of described diesel injector (1), and the width that described opening (41) makes progress in described sleeve (4) footpath is greater than described positioning element (2) width that part makes progress the party in described opening (41).
8. the hold down gag for diesel injector according to claim 7, is characterized in that, the axial length range of described opening (41) is 30mm ~ 50mm.
9. the hold down gag for diesel injector according to claim 7, 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 outer side wall of the madial wall of described assembly department and described swivel nut fits.
10. the hold down gag for diesel injector according to claim 6, 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 true CN103047065A (en) | 2013-04-17 |
| CN103047065B CN103047065B (en) | 2014-12-10 |
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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 |
|---|---|
| CN (1) | CN103047065B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841873A (en) * | 2016-03-23 | 2016-08-10 | 潍柴动力股份有限公司 | System and method for testing pressing force of high pressure connector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1335736A (en) * | 1971-02-05 | 1973-10-31 | Cav Ltd | Fuel injector |
| US4368702A (en) * | 1979-01-13 | 1983-01-18 | Klockner-Humboldt-Deutz Aktiengesellschaft | Method of operating an air-compressing, self-igniting internal combustion engine |
| CN1394256A (en) * | 2000-06-03 | 2003-01-29 | 罗伯特·博施有限公司 | Sealing means and retaining element for fuel-injection valve |
| CN1573063A (en) * | 2003-06-05 | 2005-02-02 | 三菱电机株式会社 | Cylinder injecting fuel injection valve device |
| 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
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1335736A (en) * | 1971-02-05 | 1973-10-31 | Cav Ltd | Fuel injector |
| US4368702A (en) * | 1979-01-13 | 1983-01-18 | Klockner-Humboldt-Deutz Aktiengesellschaft | Method of operating an air-compressing, self-igniting internal combustion engine |
| CN1394256A (en) * | 2000-06-03 | 2003-01-29 | 罗伯特·博施有限公司 | Sealing means and retaining element for fuel-injection valve |
| CN1573063A (en) * | 2003-06-05 | 2005-02-02 | 三菱电机株式会社 | Cylinder injecting fuel injection valve device |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841873A (en) * | 2016-03-23 | 2016-08-10 | 潍柴动力股份有限公司 | System and method for testing pressing force of high pressure connector |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103047065B (en) | 2014-12-10 |
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