CN214887425U

CN214887425U - Single-plunger fuel injection pump structure convenient to arrange

Info

Publication number: CN214887425U
Application number: CN202121000155.7U
Authority: CN
Inventors: 韦礼万; 莫宗华; 罗名雄
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-26
Anticipated expiration: 2031-05-11

Abstract

The utility model provides a single-plunger injection pump structure of conveniently arranging belongs to engine diesel engine technical field. The single-plunger oil injection pump structure convenient to arrange comprises a high-pressure oil pipe, a shell and a pressurizing assembly. Casing one side intercommunication is fixed in high pressure fuel pipe, the casing intercommunication is fixed with defeated oil pipe, the casing downside is equipped with the oil collecting cavity, the casing is inside to be close to high pressure fuel pipe one side fixedly connected with non return spare, non return spare is including apron and rocking arm, the rocking arm rotate connect in the casing, apron fixed connection in the rocking arm other end, the pressure components includes chock plug, connecting rod and cam, chock plug sliding connection in the oil collecting cavity. The device is through setting up the casing in high pressure fuel pipe one side, and the oil collecting cavity is saved fluid, and defeated oil pipe is equipped with four orientations, chooses for use an orientation to arrange as arranging needs, arranges more in a flexible way, but make full use of space for vehicle structure is compacter.

Description

Single-plunger fuel injection pump structure convenient to arrange

Technical Field

The utility model relates to an engine diesel engine technical field particularly, relates to a single-plunger injection pump structure of conveniently arranging.

Background

The injection pump is an important component of an automotive diesel engine. The fuel injection pump assembly is usually an integral body formed by mounting components such as a fuel injection pump, a speed regulator and the like together. The governor is a component which ensures the low-speed operation of the diesel engine and the limitation of the maximum rotating speed and ensures a certain relation between the injection quantity and the rotating speed. The fuel injection pump is the most important part of the diesel engine and is regarded as the heart part of the diesel engine, and once a problem occurs, the fuel injection pump can cause the whole diesel engine to work abnormally. The fuel injection pump can be mainly divided into three types, namely a plunger type fuel injection pump, a fuel injection pump-fuel injector and a rotor distribution type fuel injection pump. The plunger type fuel injection pump has the longest history and the most extensive application, and has higher reliability; the fuel injection pump and the fuel injector are integrated and directly mounted on an engine cylinder cover, so that adverse effects caused by a high-pressure fuel pipe can be eliminated; the rotor distribution type fuel injection pump only has a pair of plungers, realizes the pressurization and distribution of fuel oil mainly by the rotation of the rotor, and has the characteristics of small volume, light weight, convenient use, low cost and the like.

At present, in the plunger pump in the prior art, the high-pressure oil outlet is parallel to the direction of the plunger and is on the same axis with the plunger. The high-pressure oil pipe is connected with the high-pressure oil pipe, and the high-pressure oil pipe is arranged along the direction of the plunger by a certain length and then arranged according to the surrounding boundary. The distance required by the high-pressure oil pipe joint, the nut and the oil pipe bending radius is increased, and the straight line section required by the high-pressure oil pipe is longer, so that the oil injection pump is arranged in a large space required in the axial direction of the plunger, the applicability of the oil injection pump is reduced, and the arrangement difficulty is increased.

How to invent a single-plunger fuel injection pump structure which is convenient to arrange to improve the problems becomes a problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a single-plunger injection pump structure of conveniently arranging aims at improving the great problem of the degree of difficulty of current injection pump arrangement.

The utility model discloses a realize like this:

the utility model provides a single plunger injection pump structure that conveniently arranges includes high pressure fuel pipe, casing and pressurization subassembly.

Casing one side intercommunication is fixed in high pressure fuel pipe, the casing intercommunication is fixed with defeated oil pipe, the casing downside is equipped with the oil collecting cavity, the casing is inside to be close to high pressure fuel pipe one side fixedly connected with non return spare, non return spare is including apron and rocking arm, the rocking arm rotate connect in the casing, apron fixed connection in the rocking arm other end, the pressure components includes chock plug, connecting rod and cam, chock plug sliding connection in the oil collecting cavity, connecting rod one end fixed connection in the chock plug, cam sliding connection in the connecting rod other end.

In an embodiment of the present invention, the high pressure oil pipe is provided with an oil outlet, and the oil outlet is communicated with the housing.

The utility model discloses an in an embodiment, the casing is close to oil-out fixedly connected with dog, fixed surface installs the stopper in the oil collecting chamber.

The utility model discloses an in the embodiment, apron one side fixed mounting has the fixed block, rocking arm fixed connection in the fixed block.

In an embodiment of the present invention, the housing is fixedly connected to the rotating base, and the other end of the rocker arm is rotatably connected to the rotating base.

In an embodiment of the present invention, the housing is close to one side of the oil outlet and is provided with a sealing ring, and the sealing ring and the cover plate are arranged in a matching manner.

The utility model discloses an in an embodiment, connecting rod bottom fixed mounting has the connecting seat, the connecting seat rotates and is connected with the gyro wheel.

In an embodiment of the present invention, the roller is slidably connected to the cam, and the spring is sleeved on the bottom side of the connecting rod.

The utility model discloses an in the embodiment, connecting rod sliding connection in the casing, defeated oil pipe is equipped with four.

In an embodiment of the present invention, the oil delivery pipe is perpendicular to the high pressure oil pipe or parallel to the high pressure oil pipe and does not need to be coaxial with the high pressure oil pipe.

The utility model has the advantages that: the utility model discloses a single-plunger injection pump structure that conveniently arranges that above-mentioned design obtained, during the use, high pressure fuel pipe communicates in outside injection pump, in will impressing high pressure fuel pipe through the injection pump, get into inside the casing, because apron and rocking arm carry out the non return to fluid, make it collect to the collection oil intracavity, defeated oil pipe through setting up the equidirectional pumps oil, if pressure undersize, then through rotating the cam, jack-up connecting rod upwards, it removes in the collection oil intracavity to drive the chock plug, the operation pressurizes to the fluid of collection oil intracavity, conveniently pump fluid, convenient operation, the device is through setting up the casing in high pressure fuel pipe one side, the collection oil chamber is saved fluid, defeated oil pipe is equipped with four orientations, choose one kind of orientation to arrange for use according to arranging needs, arrange more in a flexible way, the make full use of space, make the vehicle structure compacter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a single-plunger fuel injection pump which is provided by the embodiment of the invention and is convenient to arrange;

fig. 2 is a schematic structural view of a cross-sectional view provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a point a in fig. 2 according to an embodiment of the present invention;

fig. 4 is a schematic top view structure diagram according to an embodiment of the present invention.

In the figure: 100-high pressure oil pipe; 110-an oil outlet; 111-a stop; 300-a housing; 310-an oil delivery pipe; 320-an oil collecting cavity; 321-a limiting block; 330-no return; 331-a cover plate; 332-fixed block; 333-rocker arm; 335-a rotating seat; 336-sealing ring; 500-a pressing assembly; 510-a plug head; 520-a connecting rod; 521-a connecting seat; 523-spring; 525-rollers; 530-cam.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-4, the present invention provides a single plunger fuel injection pump structure with convenient arrangement, which includes a high pressure fuel pipe 100, a housing 300 and a pressurizing assembly 500.

Wherein, casing 300 fixed connection is in high pressure fuel pipe 100, and pressurization subassembly 500 sliding connection is in casing 300, and casing 300 is used for collecting fluid, conveniently to not equidirectional transport fluid, and pressurization subassembly 500 conveniently pressurizes the inside fluid of casing 300, makes things convenient for fluid to carry.

Referring to fig. 1, 3 and 4, in some embodiments, high pressure oil line 100 is provided with an oil outlet 110.

Referring to fig. 1 to 4, one side of a housing 300 is fixedly connected to a high pressure oil pipe 100, the housing 300 is fixedly welded to the high pressure oil pipe 100, the housing 300 is fixedly connected to an oil delivery pipe 310, the oil delivery pipe 310 is fixedly welded to the housing 300 to facilitate oil delivery, an oil collection chamber 320 is disposed at a lower side of the housing 300, a check member 330 is fixedly connected to one side of the housing 300 close to the high pressure oil pipe 100, the check member 330 includes a cover plate 331 and a rocker arm 333, the rocker arm 333 is rotatably connected to the housing 300, the cover plate 331 is fixedly connected to the other end of the rocker arm 333 to check oil in the oil collection chamber 320.

In some specific embodiments, the oil outlet 110 is communicated with the housing 300, the housing 300 is fixedly connected with the stopper 111 near the oil outlet 110, the stopper 111 and the housing 300 are integrally designed, the inner surface of the oil collection chamber 320 is fixedly provided with the stopper 321, the stopper 321 is welded and fixed on the inner surface of the housing 300 to facilitate the limiting operation, one side of the cover plate 331 is fixedly provided with the fixed block 332, the fixed block 332 is welded and fixed on the cover plate 331 to facilitate the connection and fixation, the rocker arm 333 is fixedly connected to the fixed block 332, the rocker arm 333 is clamped and fixed on the fixed block 332, the housing 300 is fixedly connected with the rotating seat 335, the rotating seat 335 is welded and fixed on the inner surface of the housing 300, the other end of the rocker arm 333 is rotatably connected to the rotating seat 335, one side of the housing 300 near the oil outlet 110 is provided with the sealing ring 336, the sealing ring 336 is made of rubber to facilitate the cover plate 331 to seal the oil outlet 110 to avoid the cover plate 331 directly colliding with the housing 300, and as a result, the sealing rings 336 and the cover plate 331 are arranged in a matching manner, the number of the oil delivery pipes 310 is four, and the oil delivery pipes 310 are perpendicular to the high-pressure oil pipe 100 or parallel to the high-pressure oil pipe 100 and do not need to be coaxial with the high-pressure oil pipe 100.

Referring to fig. 1 and 2, the pressing assembly 500 includes a plug 510, a connecting rod 520, and a cam 530, the plug 510 is slidably connected to the oil collecting chamber 320, one end of the connecting rod 520 is fixedly connected to the plug 510, the plug 510 is welded to the connecting rod 520, and the cam 530 is slidably connected to the other end of the connecting rod 520.

In some specific embodiments, the bottom end of the connecting rod 520 is fixedly provided with the connecting seat 521, the connecting seat 521 is welded and fixed at the bottom end of the connecting rod 520, the connecting seat 521 is rotatably connected with the roller 525, the roller 525 is slidably connected with the cam 530, the spring 523 is sleeved at the bottom side of the connecting rod 520, so as to prevent the connecting seat 521 from directly colliding with the housing 300 to cause damage, and the connecting rod 520 is slidably connected with the housing 300.

The working principle of the single-plunger oil injection pump structure convenient to arrange is as follows: during the use, high pressure fuel pipe 100 communicates in outside injection pump, will impress in high pressure fuel pipe 100 through the injection pump, get into inside casing 300, because apron 331 and rocking arm 333 carry out the non return to fluid, make it collect to the oil collecting chamber 320 in, pump oil through setting up the defeated oil pipe 310 of equidirectional, if the pressure undersize, then through rotating cam 530, upwards jack-up connecting rod 520, drive chock plug 510 and remove in the oil collecting chamber 320, carry out the pressurization operation to the fluid in the oil collecting chamber 320, conveniently pump fluid, convenient operation, defeated oil pipe 310 is equipped with four orientations, choose one kind of orientation to arrange according to arranging the needs, arrange more in a flexible way, but make full use of space, make the vehicle structure compacter.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-plunger oil injection pump structure convenient to arrange is characterized by comprising

A high pressure oil pipe (100);

the oil pipe check valve comprises a shell (300), wherein one side of the shell (300) is fixedly communicated with the high-pressure oil pipe (100), an oil conveying pipe (310) is fixedly communicated with the shell (300), an oil collecting cavity (320) is formed in the lower side of the shell (300), one side, close to the high-pressure oil pipe (100), of the inside of the shell (300) is fixedly connected with a check piece (330), the check piece (330) comprises a cover plate (331) and a rocker arm (333), the rocker arm (333) is rotatably connected to the shell (300), and the cover plate (331) is fixedly connected to the other end of the rocker arm (333);

pressurization subassembly (500), pressurization subassembly (500) include chock plug (510), connecting rod (520) and cam (530), chock plug (510) sliding connection in oil collecting chamber (320), connecting rod (520) one end fixed connection in chock plug (510), cam (530) sliding connection in the connecting rod (520) other end.

2. An easy-to-arrange single-plunger fuel injection pump structure according to claim 1, characterized in that the high-pressure fuel pipe (100) is provided with an oil outlet (110), and the oil outlet (110) is communicated with the housing (300).

3. A single-plunger fuel injection pump structure convenient to arrange according to claim 2, characterized in that a stop block (111) is fixedly connected to the housing (300) near the fuel outlet (110), and a limit block (321) is fixedly mounted on the inner surface of the fuel collection chamber (320).

4. An easy-to-arrange single-plunger oil injection pump structure according to claim 3, characterized in that a fixed block (332) is fixedly mounted on one side of the cover plate (331), and the rocker arm (333) is fixedly connected to the fixed block (332).

5. An arrangement facilitating single-plunger injection pump structure according to claim 4, characterized in that a rotation seat (335) is fixedly connected to the housing (300), and the other end of the rocker arm (333) is rotatably connected to the rotation seat (335).

6. An easily arranged single-plunger oil injection pump structure according to claim 5, characterized in that a sealing ring (336) is arranged on one side of the housing (300) close to the oil outlet (110), and the sealing ring (336) and the cover plate (331) are arranged in a matching and opposite mode.

7. An easily arranged single-plunger oil injection pump structure according to claim 6, characterized in that the bottom end of the connecting rod (520) is fixedly provided with a connecting seat (521), and the connecting seat (521) is rotatably connected with a roller (525).

8. An easy-to-arrange single-plunger oil injection pump structure according to claim 7, characterized in that the roller (525) is slidably connected to the cam (530), and the connecting rod (520) is sleeved with a spring (523) at the bottom side.

9. An easy-to-arrange single-plunger injection pump structure according to claim 8, characterized in that the connecting rod (520) is slidably connected to the housing (300), and the oil delivery pipe (310) is provided with four.

10. A single-plunger injection pump construction according to claim 1, characterised in that the oil delivery pipe (310) is perpendicular to the high-pressure oil pipe (100) or parallel to the high-pressure oil pipe (100) and need not be coaxial with the high-pressure oil pipe (100).