CN207686891U - Diesel engine array jet pump - Google Patents
Diesel engine array jet pump Download PDFInfo
- Publication number
- CN207686891U CN207686891U CN201820041593.XU CN201820041593U CN207686891U CN 207686891 U CN207686891 U CN 207686891U CN 201820041593 U CN201820041593 U CN 201820041593U CN 207686891 U CN207686891 U CN 207686891U
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- China
- Prior art keywords
- tappet body
- top plate
- diesel engine
- idler wheel
- pump housing
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Abstract
The utility model provides a kind of diesel engine array jet pump comprising tappet body, tappet body include：Top plate；And annular sidewall, annular sidewall is located at the lower section of top plate and is connect with top plate, the shape of the outer peripheral edge of annular sidewall and size and the shape of the outer peripheral edge of top plate are identical as size, annular sidewall includes two cambered surfaces and two sections, it two cambered surface intervals and is oppositely arranged, two sections interval and is arranged in parallel, the both ends of cambered surface are connect with two sections respectively, section offers idler wheel axis hole, and the central axis upright of idler wheel axis hole is in the central axis of tappet body；Wherein, top plate and annular sidewall, which enclose to set, is formed with roller groove.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：
Top plate；With
Annular sidewall, the annular sidewall are located at the lower section of the top plate and are connect with the top plate, the annular sidewall
Outer peripheral edge shape and size and the shape of the outer peripheral edge of the top plate it is identical as size, the annular sidewall include two arcs
Face and two sections, two cambered surface intervals and are oppositely arranged, and two section intervals and are arranged in parallel, the cambered surface
Both ends are connect with two sections respectively, and the section offers idler wheel axis hole, the central axis upright of the idler wheel axis hole
In the central axis of the tappet body；
Wherein, the top plate and the annular sidewall, which enclose to set, is formed with roller groove.
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 in the roller groove of the tappet body, and is fixed on the tappet body by roller shaft
In idler wheel axis hole；
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, and the limiting component is for limiting the tappet body
In the pump housing intracavitary along the axial rotation of 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, 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 top plate of the tappet body offers through-hole, the through-hole runs through the top plate.
In the technical scheme, so that the machine oil altered on very is smoothly flowed back into cam chamber by the way that through-hole is arranged, reduce
The oil level of tappet body upper end, ensure that the normal operation of piston, while reduce the risk that machine oil penetrates into fuel oil；Together
When, machine oil can first pass through idler wheel during flowing back into cam chamber, to also play the role of lubrication to idler wheel.
Preferably, the quantity of the through-hole is two, the distance at two through-holes to the centers of the top plate is equal, and
Central axis of the central axis of two through-holes each parallel to the tappet body.
Preferably, a diameter of 2-4mm of the through-hole.
In the technical scheme, it is that high speed moves up and down since tappet body is in operation, the pressure being subject to
It is very big, therefore, to carry out the setting to the position and aperture of through-hole on the basis of ensureing the self-strength of tappet body.
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 that the partial cross of the tappet body of the diesel engine array jet pump of one preferred embodiment of the utility model looks up knot
Structure schematic diagram.
Fig. 4 is the sectional view in the directions A-A in Fig. 2.
Fig. 5 is the sectional view in the directions B-B in Fig. 2.
Fig. 6 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
Through-hole 411
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
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 shown in figs 1 to 6, 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 is located at the lower section of top plate 41 and is connect with top plate 41, ring
The shape of the outer peripheral edge of shape side wall 42 and size and the shape of the outer peripheral edge of top plate 41 are identical as size, and annular sidewall 42 includes two
A cambered surface 421 and two sections 422, two cambered surfaces 421 are spaced and are oppositely arranged, and two sections 422 are spaced and are arranged in parallel, arc
The both ends in face 421 are connect with two sections 422 respectively, and section 422 offers idler wheel axis hole 423, the central shaft of idler wheel axis hole 423
Central axis of the line perpendicular to tappet body 40.Top plate 41 and annular sidewall 42, which enclose to set, is formed with roller groove 43.Tappet body 40 is one
It is body formed.Idler wheel 20 is located in the roller groove 43 of tappet body 40, and the idler wheel axis hole of tappet body 40 is fixed on by roller shaft 60
In 423.
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, the top plate 41 of tappet body 40 offers through-hole 411, and through-hole 411 runs through top plate 41.In this way, logical
Crossing setting through-hole 411 enables the machine oil altered on very smoothly to flow back into cam chamber 12, reduces the machine oil of 40 upper end of tappet body
Amount, ensure that the normal operation of piston, while reduce the risk that machine oil penetrates into fuel oil；Meanwhile machine oil is flowing back into cam
During chamber 12, idler wheel 20 can be first passed through, to also play the role of lubrication to idler wheel 20.Preferably, the quantity of through-hole 411 is
Two, the distance at the center of two through-holes 411 to top plate 41 is equal, and the central axis of two through-holes 411 is each parallel to tappet
The central axis of body 40.A diameter of 2-4mm of through-hole 411.It is high speed or more in this way, since tappet body 40 is in operation
Back and forth movement, the pressure being subject to is very big, therefore, to be carried out to through-hole on the basis of ensureing the self-strength of tappet body 40
The setting of 411 position and aperture.
In the present embodiment, the upper surface of top plate 41 has upwardly extended limit protrusion 44 along the short transverse h of tappet body, limit
Position protrusion 44 is arcuate structure.The quantity of limit protrusion 44 is two, and the corresponding arc with annular sidewall 42 of limit protrusion 44
Face 421 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 spring base
80 bottom is arranged between two limit protrusions 44.In this way, by be arranged tappet body 40 structure be achieved that spring
The limit of seat 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 (7)
1. a kind of diesel engine array jet pump comprising tappet body, which is characterized in that the tappet body includes：
Top plate；With
Annular sidewall, the annular sidewall are located at the lower section of the top plate and are connect with the top plate, outside the annular sidewall
The shape of periphery and size and the shape of the outer peripheral edge of the top plate are identical as size, the annular sidewall include two cambered surfaces and
Two sections, two cambered surface intervals and are oppositely arranged, and two section intervals and are arranged in parallel, the both ends of the cambered surface
It is connect respectively with two sections, the section offers idler wheel axis hole, and the central axis upright of the idler wheel axis hole is in institute
State the central axis of tappet body；
Wherein, the top plate and the annular sidewall, which enclose to set, is formed with roller groove.
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 are located in the roller groove of the tappet body, and the idler wheel of the tappet body is fixed on by roller shaft
In axis hole；
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, and the limiting component is for limiting the tappet body in institute
State axial rotation of 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 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.
4. diesel engine array jet pump as described in claim 1, which is characterized in that the top plate of the tappet body offers logical
Hole, the through-hole run through the top plate.
5. diesel engine array jet pump as claimed in claim 4, which is characterized in that the quantity of the through-hole is two, two
The distance at the through-hole to the center of the top plate is equal, and the central axis of two through-holes is each parallel to the tappet body
Central axis.
6. diesel engine array jet pump as claimed in claim 4, which is characterized in that a diameter of 2-4mm of the through-hole.
7. 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 |
|---|---|---|---|
| CN201820041593.XU CN207686891U (en) | 2018-01-10 | 2018-01-10 | Diesel engine array jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820041593.XU CN207686891U (en) | 2018-01-10 | 2018-01-10 | Diesel engine array jet pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207686891U true CN207686891U (en) | 2018-08-03 |
Family
ID=62991676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820041593.XU Active CN207686891U (en) | 2018-01-10 | 2018-01-10 | Diesel engine array jet pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207686891U (en) |
-
2018
- 2018-01-10 CN CN201820041593.XU patent/CN207686891U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |