CN207673477U - Diesel engine array jet pump - Google Patents
Diesel engine array jet pump Download PDFInfo
- Publication number
- CN207673477U CN207673477U CN201820040909.3U CN201820040909U CN207673477U CN 207673477 U CN207673477 U CN 207673477U CN 201820040909 U CN201820040909 U CN 201820040909U CN 207673477 U CN207673477 U CN 207673477U
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- Prior art keywords
- tappet body
- diesel engine
- pump housing
- jet pump
- idler wheel
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Abstract
The utility model provides a kind of diesel engine array jet pump comprising tappet body, tappet body include：Annular sidewall, annular sidewall include two cambered surfaces and two sections, two cambered surface intervals and are oppositely arranged, it two sections interval and is arranged in parallel, the both ends of cambered surface are connect with two sections respectively, and section offers idler wheel axis hole, and the central axis upright of idler wheel axis hole is in the central axis of tappet body；And top plate, top plate is located at the top of annular sidewall, top plate includes main body and boss, the shape of the outer peripheral edge of main body and size and the shape of the outer peripheral edge of annular sidewall are identical as size, the section that boss corresponds to annular sidewall is arranged, one end of boss is connect with main body, the other end the extending radially outwardly along tappet body of boss.The utility model makes tappet body not generate rotation during moving up and down, to ensure that the working efficiency of diesel engine array jet pump by the concrete structure of setting tappet body.
Description
Technical field
The utility model is related to a kind of diesel engine array jet pumps.
Background technology
Diesel engine array jet pump is mainly used for matching diesel engine, and is installed to the public vapour using diesel oil as fuel
Vehicle, on the power assemblies such as truck.Diesel engine array jet pump is by advancing device, the pump housing, oil transfer pump, several big component groups such as governor
At.The tappet body of diesel engine array jet pump in the prior art is located in advancing device, passes through idler wheel and eccentric wheel (such as cam)
Rolling connection, will input speed and output rotating speed between formed a differential seat angle, to can guarantee by camshaft change oil
The compression time of pump plunger so that diesel oil function little by little sprays diesel oil before steam-cylinder piston reaches top dead centre.But due to
Tappet body will produce certain rotation situation during moving up and down, and idler wheel is caused to deviate cam, influence diesel engine array
The working efficiency of jet pump.
Utility model content
The technical problems to be solved in the utility model is to overcome the meeting during moving up and down of prior art tappet body
The defect for generating certain rotation provides a kind of diesel engine array jet pump.
The utility model is to solve above-mentioned technical problem by following technical proposals：
A kind of diesel engine array jet pump comprising tappet body, feature are that the tappet body includes：
Annular sidewall, the annular sidewall include two cambered surfaces and two sections, two cambered surface intervals and opposite are set
It sets, two section intervals and is arranged in parallel, the both ends of the cambered surface are connect with two sections respectively, and the section is opened
Equipped with idler wheel axis hole, the central axis upright of the idler wheel axis hole is in the central axis of the tappet body；With
Top plate, the top plate are located at the top of the annular sidewall, and the top plate includes main body and boss, the main body
Outer peripheral edge shape and size and the shape of the outer peripheral edge of the annular sidewall it is identical as size, the boss corresponds to described
The section of annular sidewall is arranged, and one end of the boss is connect with the main body, and the other end of the boss is endured along described
Cylinder extends radially outwardly.
In the technical scheme, by the way that the section structure of annular sidewall is specifically arranged, tappet body is made not move up and down
Rotation is generated in the process, to ensure that the working efficiency of diesel engine array jet pump.
Preferably, the diesel engine array jet pump further includes：
The pump housing, the interior short transverse along the pump housing of the pump housing are equipped with the pump housing chamber being connected and cam chamber successively, and
The central axis upright of the pump housing chamber is set to the pump housing intracavitary in the central axis of the cam chamber, the tappet body,
And the central axis of the tappet body is overlapped with the central axis of the pump housing chamber；
Idler wheel, the idler wheel is located at the top plate of the tappet body and the annular sidewall encloses the roller groove for setting and being formed
It is interior, and be fixed in the idler wheel axis hole of the tappet body by roller shaft；
Cam, the cam are set in the cam chamber of the pump housing, and the periphery of the idler wheel is resisted against the week of the cam
Edge, the cam are used to drive the idler wheel to move up and down along the short transverse of the pump housing；
Limiting component, the limiting component are inserted in the pump housing chamber, and the centerline axis parallel of the limiting component in
Plane where the cam, the limiting component are resisted against the section of the tappet body, and the limiting component is for limiting
Make axial rotation of the tappet body in the pump housing intracavitary along the tappet body.
In the technical scheme, by the centerline axis parallel of limiting component in where cam plane and the limit
Position component is resisted against the restriction of the section of tappet body, it is ensured that tappet body will not turn in pump housing intracavitary along the axial of tappet body
Dynamic, the periphery that can fit in cam completely to ensure that idler wheel always is moved.
Preferably, being equipped with gap between the side wall of the pump housing chamber and the boss of the tappet body.
Preferably, the gap is 0.02-0.53mm.
In the technical scheme, by the way that the value range in the gap between the side wall and the boss of tappet body of pump housing chamber is arranged,
The machine oil altered on the outside of the section of tappet body is considerably reduced, the side that machine oil flows through the section and pump housing chamber of tappet body is limited
The amount in the gap between wall improves efficiency of combustion to ensure fuel oil combustion position.
Preferably, the diesel engine array jet pump further includes elastic structure, the surface of the roller shaft is along the rolling
The circumferential direction of wheel shaft offers the first fixing groove, and is equipped with the relative to first fixing groove in one of them described idler wheel axis hole
Two fixing grooves, first fixing groove is enclosed with second fixing groove to be set to form elastic structure slot, the elastic structure card
Set on the elastic structure slot with the fixation roller shaft in the idler wheel axis hole.
In the technical scheme, it by the cooperation of elastic structure and elastic structure slot, can quickly and securely incite somebody to action
Roller shaft is installed in idler wheel axis hole.
Preferably, the upper surface of the main body of the top plate has upwardly extended limit along the short transverse of the tappet body
Protrusion, the limit protrusion are arcuate structure.
Preferably, the quantity of the limit protrusion is two, and the limit protrusion is corresponding with the annular sidewall
The cambered surface setting.
Preferably, the diesel engine array jet pump further includes spring base, the spring base is located at the upper of the tappet body
Side, and the bottom of the spring base is arranged between two limit protrusions.
In the technical scheme, by be arranged tappet body limit protrusion concrete structure be achieved that spring base
Limit, facilitates installation.
Preferably, the tappet body is integrally formed.
The positive effect of the utility model is：
The utility model is made tappet body not generated during moving up and down and is turned by the concrete structure of setting tappet body
It is dynamic, to ensure that the working efficiency of diesel engine array jet pump.
Description of the drawings
Fig. 1 is the front view structure signal of the tappet body of the diesel engine array jet pump of one preferred embodiment of the utility model
Figure.
Fig. 2 is the plan structure signal of the tappet body of the diesel engine array jet pump of one preferred embodiment of the utility model
Figure.
Fig. 3 is the sectional view in the directions A-A in Fig. 2.
Fig. 4 is the sectional view in the directions B-B in Fig. 2.
Fig. 5 is the partial cross-sectional structural diagram of the diesel engine array jet pump of one preferred embodiment of the utility model.
Reference sign
The pump housing 10
Pump housing chamber 11
Cam chamber 12
Idler wheel 20
Cam 30
Tappet body 40
Top plate 41
Main body 411
Boss 412
Annular sidewall 42
Cambered surface 421
Section 422
Idler wheel axis hole 423
Roller groove 43
Limit protrusion 44
Limiting component 50
Roller shaft 60
Elastic structure slot 70
First fixing groove 71
Second fixing groove 72
Spring base 80
Gap 90 between the side wall and boss of pump housing chamber
The short transverse H of the pump housing
The short transverse h of tappet body
Specific implementation mode
A preferred embodiment is named, and completely illustrates the utility model in conjunction with attached drawing to become apparent from.
As Figure 1-Figure 5, the present embodiment provides a kind of diesel engine array jet pumps comprising the pump housing 10, idler wheel 20, convex
Wheel 30, tappet body 40 and limiting component 50.It is equipped with 11 He of pump housing chamber being connected in the pump housing 10 successively along the short transverse H of the pump housing
Cam chamber 12, and the central axis upright of pump housing chamber 11 is in the central axis of cam chamber 12.
Tappet body 40 is set in pump housing chamber 11, and the central axis weight of the central axis of tappet body 40 and pump housing chamber 11
It closes.Tappet body 40 includes top plate 41 and annular sidewall 42.Annular sidewall 42 include two cambered surfaces 421 and two sections 422, two
Cambered surface 421 is spaced and is oppositely arranged, and two sections 422 interval and is arranged in parallel, the both ends of cambered surface 421 respectively with two sections
422 connections, section 422 offer idler wheel axis hole 423, and the central axis upright of idler wheel axis hole 423 is in the central shaft of tappet body 40
Line.Top plate 41 is located at the top of annular sidewall 42.Top plate 41 includes main body 411 and boss 412, the outer peripheral edge of main body 411
Shape and size and the shape of the outer peripheral edge of annular sidewall 42 are identical as size, and boss 412 corresponds to the section of annular sidewall 42
422 settings, one end of boss 412 are connect with main body 411, the other end the extending radially outwardly along tappet body 40 of boss 412.Top
Plate 41 and annular sidewall 42, which enclose to set, is formed with roller groove 43.Tappet body 40 is integrally formed.Idler wheel 20 is located at the rolling of tappet body 40
Top plate 41 and annular sidewall 42 in race 43, that is, positioned at tappet body 40 are enclosed and are set in the roller groove 43 to be formed, and pass through rolling
Wheel shaft 60 is fixed in the idler wheel axis hole 423 of tappet body 40.
Cam 30 is set in the cam chamber 12 of the pump housing 10, and the periphery of idler wheel 20 is resisted against the periphery of cam 30, and cam 30 is used
It moves up and down in driving short transverse H of the idler wheel 20 along the pump housing.
Limiting component 50 is inserted in pump housing chamber 11, and the centerline axis parallel of limiting component 50 is in flat where cam 30
Face, limiting component 50 are resisted against section 422, and limiting component 50 is for limiting tappet body 40 in pump housing chamber 11 along tappet body 40
Axial rotation.In this way, by the centerline axis parallel of limiting component 50 in plane and limiting component 50 where cam 30
It is resisted against the restriction of the section 422 of tappet body 40, it is ensured that tappet body 40 will not be along the axial direction of tappet body 40 in pump housing chamber 11
Rotation, the periphery that can fit in cam 30 completely to ensure that idler wheel 20 always moved.In the present embodiment, it limits
Position component 50 is spacer pin, but is not limited to the structure type of spacer pin, can also be other structures form.
Diesel engine array jet pump further includes elastic structure (not indicated in figure), and the surface of roller shaft 60 is along roller shaft 60
Circumferential direction offer the first fixing groove 71, and it is solid relative to the first fixing groove 71 to be equipped with second in one of idler wheel axis hole 423
Determine slot 72, the first fixing groove 71 and the second fixing groove 72 enclose and set to form elastic structure slot 70, and elastic structure is arranged in elasticity
Structure slot 70 is with fixed idler whell axis 60 in idler wheel axis hole 423.In this way, passing through elastic structure and elastic structure slot 70
Cooperation, can quickly and roller shaft 60 is installed in idler wheel axis hole 423 securely.In the present embodiment, elastic structure is
The iron wire loop that can be deformed, but it is not limited to the structure type for the iron wire loop that can be deformed, can also be other structures form.
In the present embodiment, gap 90 is equipped between the side wall of pump housing chamber 11 and the boss 412 of tappet body 40.Preferably,
The value range in gap 90 is 0.02-0.53mm.In this way, the boss 412 of side wall and tappet body 40 by the way that pump housing chamber 11 is arranged it
Between gap 90 value range, considerably reduce the machine oil altered on the outside of section 422 of tappet body 40, limit machine oil and flow through
The amount in the gap between the section 422 and the side wall of pump housing chamber 11 of tappet body 40 improves burning to ensure fuel oil combustion position
Efficiency.It is, the channel for preventing the machine oil in cam chamber up to alter, reduces the risk that machine oil penetrates into fuel oil, improves
Fuel combustion efficiency.
In the present embodiment, the upper surface of the main body 411 of top plate 41 has upwardly extended limit along the short transverse h of tappet body
Protrusion 44, limit protrusion 44 are arcuate structure.The quantity of limit protrusion 44 is two, and limit protrusion 44 is corresponding and annular side
The cambered surface 421 of wall 42 is arranged.Diesel engine array jet pump further includes spring base 80, and spring base 80 is located at the top of tappet body 40,
And the bottom of spring base 80 is arranged between two limit protrusions 44.In this way, being achieved that by the structure that tappet body 40 is arranged
Limit of the ground to spring base 80, facilitates installation.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the scope of protection of the utility model.
Claims (9)
1. a kind of diesel engine array jet pump comprising tappet body, which is characterized in that the tappet body includes：
Annular sidewall, the annular sidewall include two cambered surfaces and two sections, two cambered surface intervals and are oppositely arranged, two
It a section interval and is arranged in parallel, the both ends of the cambered surface are connect with two sections respectively, and the section offers
Idler wheel axis hole, the central axis upright of the idler wheel axis hole is in the central axis of the tappet body；With
Top plate, the top plate are located at the top of the annular sidewall, and the top plate includes main body and boss, the main body it is outer
The shape of periphery and size and the shape of the outer peripheral edge of the annular sidewall are identical as size, and the boss corresponds to the annular
The section of side wall is arranged, and one end of the boss is connect with the main body, and the other end of the boss is along the tappet body
Extend radially outwardly.
2. diesel engine array jet pump as described in claim 1, which is characterized in that the diesel engine array jet pump also wraps
It includes：
The pump housing, the interior short transverse along the pump housing of the pump housing are equipped with the pump housing chamber being connected and cam chamber successively, and described
For the central axis upright of pump housing chamber in the central axis of the cam chamber, the tappet body is set to the pump housing intracavitary, and institute
The central axis for stating tappet body is overlapped with the central axis of the pump housing chamber；
Idler wheel, the idler wheel is located at the top plate of the tappet body and the annular sidewall is enclosed and set in the roller groove to be formed, and
It is fixed on by roller shaft in the idler wheel axis hole of the tappet body；
Cam, the cam are set in the cam chamber of the pump housing, and the periphery of the idler wheel is resisted against the periphery of the cam, institute
Cam is stated for driving the idler wheel to move up and down along the short transverse of the pump housing；
Limiting component, the limiting component is inserted in the pump housing chamber, and the centerline axis parallel of the limiting component is in described
Plane where cam, the limiting component are resisted against the section of the tappet body, and the limiting component is for limiting institute
State axial rotation of the tappet body in the pump housing intracavitary along the tappet body.
3. diesel engine array jet pump as claimed in claim 2, which is characterized in that the side wall of the pump housing chamber and the tappet
Gap is equipped between the boss of body.
4. diesel engine array jet pump as claimed in claim 3, which is characterized in that the gap is 0.02-0.53mm.
5. diesel engine array jet pump as claimed in claim 2, which is characterized in that the diesel engine array jet pump further includes
The surface of elastic structure, the roller shaft offers the first fixing groove along the circumferential direction of the roller shaft, and described in one of them
It is equipped with the second fixing groove relative to first fixing groove in idler wheel axis hole, first fixing groove is enclosed with second fixing groove
If forming elastic structure slot, the elastic structure is arranged in the elastic structure slot with the fixation roller shaft in described
In idler wheel axis hole.
6. diesel engine array jet pump as described in claim 1, which is characterized in that the upper surface of the main body of the top plate
Limit protrusion is upwardly extended along the short transverse of the tappet body, the limit protrusion is arcuate structure.
7. diesel engine array jet pump as claimed in claim 6, which is characterized in that the quantity of the limit protrusion is two,
And the corresponding cambered surface with the annular sidewall of limit protrusion is arranged.
8. diesel engine array jet pump as claimed in claim 7, which is characterized in that the diesel engine array jet pump further includes
Spring base, the spring base is located at the top of the tappet body, and the bottom of the spring base is arranged in two limit convexes
Between rising.
9. diesel engine array jet pump as described in claim 1, which is characterized in that the tappet body is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820040909.3U CN207673477U (en) | 2018-01-10 | 2018-01-10 | Diesel engine array jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820040909.3U CN207673477U (en) | 2018-01-10 | 2018-01-10 | Diesel engine array jet pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673477U true CN207673477U (en) | 2018-07-31 |
Family
ID=62973484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820040909.3U Active CN207673477U (en) | 2018-01-10 | 2018-01-10 | Diesel engine array jet pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207673477U (en) |
-
2018
- 2018-01-10 CN CN201820040909.3U patent/CN207673477U/en active Active
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