Fuel injection structure of internal combustion generating set

Abstract

The utility model discloses a fuel injection structure of an internal combustion generating set, which relates to the technical field of internal combustion generating sets, and adopts the technical scheme that the fuel injection structure comprises a cylinder cover body, a fuel injector insertion hole and a pressing plate screw hole are formed in the cylinder cover body, a fuel injector body is inserted into the fuel injector insertion hole, and a pressing area is arranged outside the fuel injector body; the fuel injection structure of the internal combustion generating set has the advantages that the pressing effect on the fuel injector body is ensured through cooperation of the pressing unit and the pressing anti-loosening unit, the pressing unit is combined through screws and gaskets, and therefore the pressing effect on the fuel injector body is ensured; the screw is fastened in the screw hole of the pressing plate by rotating the hexagonal screw head, so that the pressing plate is fixed, and the problem of screw loosening caused by vibration generated when the internal combustion generator set works is effectively solved through the design of the pressing anti-loosening unit, especially the matching of the limiting column and the limiting hole, so that the pressing stability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to internal combustion engine set technical field, concretely relates to a kind of internal combustion generator set fuel injection structure. BACKGROUND

[0002] Fuel injection system refers to under certain pressure, a certain amount of fuel is directly injected into cylinder or intake port using fuel injector, fuel injector is usually fixed on cylinder head using two ways: one is that fuel injector is directly fastened on cylinder head using external thread on fuel injector;The other is that fuel injector is fastened on cylinder head using fuel injector pressure plate.

[0003] The existing fuel injector pressure plate fastens fuel injector on cylinder head, pressure plate is fixed on cylinder head using screw, and it is easy to loosen due to vibration during later use when connecting using screw, which affects the compression effect of fuel injector. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of internal combustion generator set fuel injection structure, by compression unit and compression anti-loosening unit, to solve the problem that it is easy to loosen due to vibration during later use when connecting using screw, which affects the compression effect of fuel injector.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a kind of internal combustion generator set fuel injection structure, including cylinder head body, the cylinder head body is internally provided with fuel injector insertion hole, pressure plate screw hole, the fuel injector insertion hole is internally inserted with fuel injector body, the fuel injector body is externally provided with compression area, the compression area is externally provided with pressure plate assembly, the pressure plate assembly includes pressure plate, the pressure plate is internally provided with two round holes, the pressure plate side is fixedly provided with two pressure feet, the pressure plate is internally inserted with compression unit and compression anti-loosening unit, the compression unit includes hexagonal screw head, the hexagonal screw head is internally provided with limiting hole, the hexagonal screw head bottom is fixedly provided with screw, the screw is externally provided with gasket.

[0006] Preferably, the compression anti-loosening unit includes connecting plate, the connecting plate top is fixedly provided with vertical plate, the vertical plate side is fixedly provided with limiting column, the connecting plate side is fixedly provided with two connecting columns, and the two connecting columns one end is provided with spring.

[0007] Preferably, two the pressure feet one end extends into compression area interior and is slidably connected with compression area.

[0008] Preferably, the screw penetrates pressure plate and is slidably connected with pressure plate, and the screw bottom extends into pressure plate screw hole interior and is connected with pressure plate screw hole by thread.

[0009] Preferably, one end of the limiting column extends into the limiting hole and is in sliding connection with the limiting hole.

[0010] Preferably, one end of the connecting column extends into the round hole and is in sliding connection with the round hole.

[0011] Preferably, one end of the spring is fixedly connected with one end of the connecting column, and the other end of the spring is fixedly connected with one end of the round hole.

[0012] The embodiments of the utility model have the following advantages:

[0013] 1. The cooperation of the pressing unit and the pressing anti-loosening unit ensures the pressing effect on the oil sprayer body, the pressing unit uses the combination of screws and gaskets, and the screws are fastened in the pressing plate screw holes by rotating the hexagonal screw head to fix the pressing plate, and the design of the pressing anti-loosening unit, especially the cooperation of the limiting column and the limiting hole, effectively prevents the screw loosening problem caused by the vibration of the internal combustion generator set during work, thereby enhancing the stability of the pressing.

[0014] 2. The design of the pressing anti-loosening unit allows the connecting plate to be easily pulled apart when the pressing unit is installed, so that the limiting column is away from the screw insertion hole, the insertion and rotational fixation of the pressing unit are facilitated, and when maintaining, the pressing unit can also be easily loosened by the same way, necessary inspection and replacement are carried out, and the maintainability of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be obtained according to the provided drawings without creative labor.

[0016] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions that can be implemented by the utility model, so they do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be produced by the utility model, should still fall within the scope covered by the technical content disclosed by the utility model.

[0017] Figure 1 The utility model provides a front view perspective drawing;

[0018] Figure 2 The utility model provides a front view perspective drawing;

[0019] Figure 3 The utility model provides a pressboard subassembly explosion perspective drawing is provided for the utility model,

[0020] Figure 4 The utility model provides a pressboard subassembly partial sectioned perspective drawing.

[0021] In the figure: 1 cylinder cover body, 2 oil injector insertion hole, 3 pressboard screw hole, 4 oil injector body, 5 compression zone, 6 pressboard subassembly, 611 pressboard, 612 round hole, 613 presser foot, 614 hexagonal screw head, 615 limiting hole, 616 gasket, 617 screw, 618 connecting plate, 619 vertical plate, 620 limiting column, 621 connecting column, 622 spring. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the embodiments of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification, and obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Refer to the attached Figure 1 - attached Figure 4 The utility model provides a kind of internal combustion generator set fuel injection structure, including cylinder cover body 1, oil injector insertion hole 2, pressboard screw hole 3 are set in cylinder cover body 1 inside, oil injector insertion hole 2 inside is inserted with oil injector body 4, oil injector body 4 outside is equipped with compression zone 5, compression zone 5 outside is equipped with pressboard subassembly 6, pressboard subassembly 6 includes pressboard 611, two round holes 612 are set in pressboard 611 inside, pressboard 611 one side is fixedly provided with two presser feet 613, pressboard 611 inside is inserted with compression unit and compression anti-loosening unit, compression unit includes hexagonal screw head 614, limiting hole 615 is set in hexagonal screw head 614 inside, hexagonal screw head 614 bottom is fixedly provided with screw 617, screw 617 outside is equipped with gasket 616;

[0024] In this embodiment, in order to prevent the compression plate 611 from being loosened by the pressure foot 613 pressing the oil injector body 4, the compression anti-loosening unit is pulled open to facilitate the subsequent insertion of the compression unit into the compression plate 611. At this time, the screw 617 in the compression unit is inserted through the screw insertion hole on the top of the compression plate 611, so that the screw 617 is inserted into the compression plate screw hole 3. By rotating the hexagonal screw head 614, the screw 617 is screwed into the compression plate screw hole 3, achieving the purpose of fixing the compression plate 611. At the same time, the compression plate 611 and the pressure foot 613 cooperate to press the oil injector body 4. After the screw 617 is rotated into place, the compression anti-loosening unit is loosened, the limiting column 620 is inserted into the limiting hole 615, achieving the purpose of locking the hexagonal screw head 614, so that the hexagonal screw head 614 will not be loosened due to the vibration of the cylinder head body 1 during work, improving the stability of the compression of the oil injector body 4;

[0025] In order to achieve the purpose of locking the hexagonal screw head 614 by the compression anti-loosening unit, the device adopts the following technical scheme: the compression anti-loosening unit includes a connecting plate 618, the top of the connecting plate 618 is fixedly provided with a vertical plate 619, one side of the vertical plate 619 is fixedly provided with a limiting column 620, one side of the connecting plate 618 is fixedly provided with two connecting columns 621, one end of each of the two connecting columns 621 is provided with a spring 622, one end of the limiting column 620 extends into the limiting hole 615 and is in sliding connection with the limiting hole 615, one end of the connecting column 621 extends into the circular hole 612 and is in sliding connection with the circular hole 612, one end of the spring 622 is fixedly connected with the connecting column 621, and the other end of the spring 622 is fixedly connected with the circular hole 612. Pulling open the compression anti-loosening unit, the connecting plate 618 moves to drive the vertical plate 619 to make the limiting column 620 away from the screw insertion hole on the top of the compression plate 611, facilitating the subsequent insertion of the compression unit. After the screw 617 is rotated into place, the connecting plate 618 is loosened, the elongated spring 622 makes the connecting column 621 drive the connecting plate 618 to reset through the elastic force, the connecting plate 618 moves through the vertical plate 619 to make the limiting column 620 inserted into the limiting hole 615, achieving the purpose of locking the hexagonal screw head 614, so that the hexagonal screw head 614 will not be loosened due to the vibration of the cylinder head body 1 during work, improving the stability of the compression of the oil injector body 4;

[0026] In order to achieve the purpose of pressing the oil injector body 4, the device adopts the following technical scheme: one end of the two pressing feet 613 extends into the pressing area 5 and is in sliding connection with the pressing area 5, the screw 617 penetrates through the pressing plate 611 and is in sliding connection with the pressing plate 611, the bottom of the screw 617 extends into the pressing plate screw hole 3 and is in threaded connection with the pressing plate screw hole 3, the pressing unit is taken out from the pressing plate assembly 6, then the pressing foot 613 is inserted into the pressing area 5, and the pressing plate 611 and the oil injector body 4 are aligned with the pressing plate screw hole 3 and the oil injector insertion hole 2 respectively, after the oil injector body 4 is inserted into the oil injector insertion hole 2, the bottom of the pressing plate 611 is in contact with the top of the cylinder head body 1, the subsequent pressing unit is inserted into the pressing plate 611 and is in threaded connection with the pressing plate screw hole 3, the anti-loosening unit is inserted into the limiting hole 615 in the pressing unit, so that the hexagonal screw head 614 cannot rotate, thereby the pressing of the pressing plate 611 on the oil injector body 4 through the pressing foot 613 cannot be loosened, and the pressing effect of the oil injector body 4 during work is ensured.

[0027] The use process of the utility model is as follows: when the utility model is used, the pressing unit is taken out from the pressing plate assembly 6, then the pressing foot 613 is inserted into the pressing area 5, and the pressing plate 611 and the oil injector body 4 are aligned with the pressing plate screw hole 3 and the oil injector insertion hole 2 respectively, after the oil injector body 4 is inserted into the oil injector insertion hole 2, the bottom of the pressing plate 611 is in contact with the top of the cylinder head body 1, then the anti-loosening unit is pulled open, the connecting plate 618 moves to drive the vertical plate 619 to make the limiting column 620 away from the screw insertion hole on the top of the pressing plate 611, so that the subsequent pressing unit is inserted, at the same time, the movement of the connecting plate 618 makes the connecting column 621 drive the spring 622 to elongate, at this time, the screw 617 in the pressing unit is inserted through the screw insertion hole on the top of the pressing plate 611, so that the screw 617 is inserted into the pressing plate screw hole 3, the hexagonal screw head 614 is rotated to make the screw 617 rotate into the pressing plate screw hole 3, the purpose of fixing the pressing plate 611 is achieved, at the same time, the pressing plate 611 and the pressing foot 613 press the oil injector body 4, after the screw 617 is rotated in place, the connecting plate 618 is loosened, the elongated spring 622 drives the connecting column 621 to reset the connecting plate 618 through the elastic force, the movement of the connecting plate 618 makes the limiting column 620 inserted into the limiting hole 615 through the vertical plate 619, the purpose of locking the hexagonal screw head 614 is achieved, so that the pressing of the hexagonal screw head 614 on the pressing plate 611 cannot be loosened due to the vibration of the cylinder head body 1 during work, and the stability of the pressed oil injector body 4 is improved.

[0028] The above is only the preferred embodiment of the present application, and any skilled person in the art can modify the above technical solutions or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent replacement according to the technical solutions of the present application is within the scope of protection of the present application.

Claims

1. An internal combustion engine generator set fuel injection structure comprising a cylinder head body (1), characterized by: The oil injector body (4) is externally provided with a pressing area (5), the pressing area (5) is externally provided with a pressing plate assembly (6), the pressing plate assembly (6) comprises a pressing plate (611), two round holes (612) are formed in the pressing plate (611), two pressing feet (613) are fixedly arranged on one side of the pressing plate (611), a pressing unit and a pressing anti-loosening unit are inserted into the pressing plate (611), the pressing unit comprises a hexagonal screw head (614), a limiting hole (615) is formed in the hexagonal screw head (614), a screw (617) is fixedly arranged at the bottom of the hexagonal screw head (614), and a gasket (616) is arranged on the screw (617).

2. An internal combustion engine set fuel injection structure according to claim 1, characterized in that: The pressing anti-loosening unit comprises a connecting plate (618), a vertical plate (619) is fixedly arranged at the top of the connecting plate (618), a limiting column (620) is fixedly arranged on one side of the vertical plate (619), two connecting columns (621) are fixedly arranged on one side of the connecting plate (618), and springs (622) are arranged at one end of the two connecting columns (621).

3. The fuel injection structure of the internal combustion generator set according to claim 1, characterized in that: One end of the two pressing feet (613) extends into the pressing area (5) and is in sliding connection with the pressing area (5).

4. The fuel injection structure of an internal combustion generator set according to claim 1, wherein: The screw (617) penetrates through the pressing plate (611) and is in sliding connection with the pressing plate (611), the bottom of the screw (617) extends into the pressing plate screw hole (3) and is connected with the pressing plate screw hole (3) through threads.

5. The fuel injection structure of the internal combustion generator set according to claim 2, characterized in that: One end of the limiting column (620) extends into the limiting hole (615) and is in sliding connection with the limiting hole (615).

6. The fuel injection structure of an internal combustion generator set according to claim 2, characterized in that: One end of the connecting column (621) extends into the round hole (612) and is in sliding connection with the round hole (612).

7. The fuel injection structure of an internal combustion generator set according to claim 2, characterized in that: One end of the spring (622) is fixedly connected with one end of the connecting column (621), and the other end of the spring (622) is fixedly connected with one end of the round hole (612).

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