CN101865063A - Coupling type injector pressing device - Google Patents
Coupling type injector pressing device Download PDFInfo
- Publication number
- CN101865063A CN101865063A CN201010103075A CN201010103075A CN101865063A CN 101865063 A CN101865063 A CN 101865063A CN 201010103075 A CN201010103075 A CN 201010103075A CN 201010103075 A CN201010103075 A CN 201010103075A CN 101865063 A CN101865063 A CN 101865063A
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- pressing plate
- pressing
- sub
- injector
- oil sprayer
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Abstract
The invention discloses a diesel injector pressing device which comprises pressing plates and an injector, wherein the cylindrical injector is provided with two parallel vertical surfaces, the cylindrical injector is coupled, installed and fixed by a sub-pressing plate and a mother pressing plate, and the structures and the sizes of the two pressing plates are fully symmetrical; the height of the two parallel vertical surfaces of the cylindrical injector is equal to that of a vertical surface pressing surface on the sub pressing plate and the mother pressing plate; the processing radius of a cambered surface pressing surface on the sub pressing plate and the mother pressing plate is equal to that of a cylinder of the cylindrical injector; fastening bolt holes are arranged at two ends of the two pressing plates; and the thickness of the vertical surface pressing surface and the cambered surface pressing surface of the pressing plates is twice as much as that of each of the bolt holes at two ends of the pressing plates. The invention has the advantages that the two pressing plates are coupled and assembled to solve the problems of difficult assembly and uneven stress for an integrated pressing plate, the sub-pressing plate and the mother pressing plate can together bear the pre-tightening force of bolts and the pulse impact force from the inner part of the cylinder, and the device of the invention can be widely applied to fix and assemble injectors on various kinds of diesel cylinder covers.
Description
Technical field
The invention belongs to the internal-combustion engine appurtenances, be specifically related to a kind of diesel injector hold down gag.
Background technique
Diesel injector is quite crucial parts in internal-combustion engine, counts for much though injector plate is little, and it is loosening to design the unreasonable oil sprayer that will cause, and makes the engine operation instability, even causes large quantities of Accident due to qualitys.The assembling of oil sprayer and cylinder head at present be connected the generally mode of employing add-on parts, i.e. injector plate.Oil sprayer is in case after the typing, pressing plate is because of the strict demand of aspects such as technology, so substantially can its structure of bigger change and size.But because the cylinder cover for diesel engine structure is different with model, thus injector plate with the matching process of cylinder cap in needs are derived the hold down gag of various ways, but this has increased the multiclass and the complexity of injector plate model undoubtedly.The form of injector plate has two kinds at present, and a kind of is pressing plate and oil injector body cast solid, and this mode of structure is difficult for guaranteeing machining accuracy that electric-controlled fuel injector seldom uses, and causes the oil sprayer volume bigger simultaneously; Another is the plug-in type pressing plate, and the cylindrical body oil sprayer is processed two small end faces, and then with in the pressing plate insertion groove, this defective that compresses mode is the pressing plate cantilever force, makes the whole discontinuity of oil sprayer, influences the oil sprayer proper functioning.The injector pressing device that the present invention proposes separates with oil sprayer, and except rational in infrastructure, for convenience detach, also applicable to the cylinder cover for diesel engine of multiple model, this standardization and normalized enforcement to the internal-combustion engine appurtenances has important value.
Summary of the invention
The purpose of this invention is to provide a kind of coupling type injector pressing device rational in infrastructure, for convenience detach.
Below in conjunction with the drawings structural principle of the present invention is described.Coupling type injector pressing device is divided into son, identical two block pressur plates of female two-part structure size with the integrated type pressing plate.The top of cylindrical body oil sprayer is processed two parallel facades (as Fig. 1), the facade seal face of two pressing plates and the processing radius of cambered surface seal face all just with the cylindrical body oil sprayer are complementary, so hold down gag can firmly wrap up the upper end of cylindrical body oil sprayer.Because two seal faces on two pressing plates equate with the height of cylindrical body oil sprayer, so after two pressing plate couplings, the height identical (as Fig. 2) of oil sprayer and pressing plate.The structure of primary and secondary pressing plate is identical, the thickness direction at construction bolt position, two ends is opposite, the thickness of facade seal face and cambered surface seal face is 2 times of fastening screw keyhole position, pressing plate two ends thickness, and two plate couplings during assembling well become one hold down gag and oil sprayer.
Description of drawings
Fig. 1 is the technology of the present invention theory structure sketch.
Fig. 2 is the structural drawing of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and by embodiment structural principle of the present invention is described further.Coupling type injector pressing device is made up of pressing plate and oil sprayer, and cylindrical body oil sprayer 1 has two facades that are parallel to each other, and by sub-pressing plate 2 and female pressing plate 31 coupling of cylindrical body oil sprayer is installed and fixed.The structure of sub-pressing plate 2 and female pressing plate 3 and size be symmetry (as Fig. 1) fully.The height of 1 two parallel facades of cylindrical body oil sprayer equates with facade seal face 4 on sub-pressing plate 2 and the female pressing plate 3; Cambered surface seal face 5 its processing radiuses on sub-pressing plate 2 and the female pressing plate 3 equate with the radius of cylindrical body oil sprayer 1 cylinder.The two ends of sub-pressing plate 2 and female pressing plate 3 are provided with fastening screw keyhole 6.The thickness of pressing plate facade seal face 4 and cambered surface seal face 5 is 2 times of fastening screw keyhole position, pressing plate two ends thickness.
Two parallel facades of cylindrical body oil sprayer can adopt milling machine processing, and pressing plate adopts and forges and machining.The facade seal face of two pressing plates and cambered surface seal face are working surface.Two facades of the facade seal face of pressing plate and oil sprayer, and the cambered surface of the cylndrical surface of oil sprayer and pressing plate will leave certain interval, so that assembling.After two pressing plates and the oil sprayer coupling by the fastening screw keyhole with fastening with bolt and cylinder cover for diesel engine.
Characteristics of the present invention and beneficial effect are: two pressing plate couplings assembling has solved the problem of monoblock type pressing plate assembling difficulty and unbalance stress, and the primary and secondary pressing plate can bear bolt pretightening and jointly from the pulsatile impact power of cylinder interior. The present invention adopts forging and machine to add manufacturing, can be widely used in the fixing assembling of polytype diesel injector.
Claims (3)
1. coupling type injector pressing device, form by pressing plate and oil sprayer, it is characterized in that cylindrical body oil sprayer (1) has two facades that are parallel to each other, by sub-pressing plate (2) and female pressing plate (3) cylindrical body oil sprayer (1) coupling is installed and fixed, sub-pressing plate (2) is symmetrical fully with the structure and the size of female pressing plate (3).
2. according to the described coupling type injector pressing device of claim 1, it is characterized in that the height of (1) two parallel facade of described cylindrical body oil sprayer equates with facade seal face (4) on described sub-pressing plate (2) and the female pressing plate (3), its processing radius of the cambered surface seal face (5) on sub-pressing plate (2) and the female pressing plate (3) equates with the radius of described cylindrical body oil sprayer (1) cylinder.
3. according to claim 1 or 2 described coupling type injector pressing devices, the two ends that it is characterized in that described sub-pressing plate (2) and female pressing plate (3) are provided with fastening screw keyhole (6), and the thickness of described pressing plate facade seal face (4) and cambered surface seal face (5) is 2 times of fastening screw keyhole position, pressing plate two ends thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010103075A CN101865063A (en) | 2010-01-29 | 2010-01-29 | Coupling type injector pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010103075A CN101865063A (en) | 2010-01-29 | 2010-01-29 | Coupling type injector pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865063A true CN101865063A (en) | 2010-10-20 |
Family
ID=42956942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010103075A Pending CN101865063A (en) | 2010-01-29 | 2010-01-29 | Coupling type injector pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865063A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573510A (en) * | 2012-07-30 | 2014-02-12 | 广西玉柴机器股份有限公司 | Electronic control fuel injector fixing pressing plate |
| EP2902617A1 (en) * | 2014-01-30 | 2015-08-05 | Kabushiki Kaisha Toyota Jidoshokki | Structure for securing injectors |
| CN106762305A (en) * | 2016-12-27 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of device and its application method that avoid fuel injector alignment pin from dismounting fracture |
-
2010
- 2010-01-29 CN CN201010103075A patent/CN101865063A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573510A (en) * | 2012-07-30 | 2014-02-12 | 广西玉柴机器股份有限公司 | Electronic control fuel injector fixing pressing plate |
| CN103573510B (en) * | 2012-07-30 | 2015-12-30 | 广西玉柴机器股份有限公司 | Electric-controlled fuel injector stationary platen |
| EP2902617A1 (en) * | 2014-01-30 | 2015-08-05 | Kabushiki Kaisha Toyota Jidoshokki | Structure for securing injectors |
| CN106762305A (en) * | 2016-12-27 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of device and its application method that avoid fuel injector alignment pin from dismounting fracture |
| CN106762305B (en) * | 2016-12-27 | 2022-08-09 | 中国船舶重工集团公司第七一一研究所 | Device for preventing oil sprayer positioning pin from being disassembled and assembled and broken and use method thereof |
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Open date: 20101020 |