CN205744422U - A kind of floating type fuel oil pump of gear shaft - Google Patents
A kind of floating type fuel oil pump of gear shaft Download PDFInfo
- Publication number
- CN205744422U CN205744422U CN201620592577.0U CN201620592577U CN205744422U CN 205744422 U CN205744422 U CN 205744422U CN 201620592577 U CN201620592577 U CN 201620592577U CN 205744422 U CN205744422 U CN 205744422U
- Authority
- CN
- China
- Prior art keywords
- gear shaft
- driven gear
- driving gear
- face
- pump housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
This utility model provides a kind of floating type fuel oil pump of gear shaft, it includes the pump housing, back shroud, front shroud, driving gear shaft, driven gear shaft, driving gear shaft rear end and driven gear shaft rear end are installed in rotation in the axis hole of back shroud, driving gear shaft front end and driven gear shaft front end are installed in rotation in the axis hole of pump housing front end face, wherein driving gear shaft front end is provided with the power transmission shaft of axially-extending, and described power transmission shaft passes from the axis hole of front shroud；Being provided with the first cavity volume between end face and the end face of driven gear shaft rear end and the back shroud of driving gear shaft rear end, be provided with the second cavity volume between the end face of driven gear shaft front end and the front end face of the pump housing and front shroud, driven gear shaft is provided with the through hole running through rear and front end；Driving gear shaft and driven gear shaft are meshed by gear in the pump housing, form oil suction chamber respectively and go out oil pocket between driving gear shaft and the left and right sides of driven gear shaft and the pump housing.
Description
Technical field
This utility model relates to a kind of fuel oil pump.
Background technology
The structure of conventional fuel oil pump is that pump driving gear passes through interference fit, pin key joint transmission with power transmission shaft, this
Planting structure weak point is: pump component is many, assembly process is many, and cost is high, and trouble point is increased；And pump gear is constituted with power transmission shaft
After one entirety, pump gear cannot axial float, the end face making the pump housing and pump cover is easy to wear, thus has influence on the use longevity of pump
Life, and dismounting inconvenience.
Utility model content
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art to provide a kind of floating gear formula fuel oil oil transportation
Pump, the oil transfer pump of this kind of structure solves conventional fuel oil pump pump gear in operation process, and pump gear can not float vertically
Move and cause scraping the pump housing or the probability of pump cover end face, improve the reliability of pump, extend the service life of pump.
In order to solve above-mentioned technical problem, this utility model adopts the following technical scheme that a kind of floating type fuel oil of gear shaft
Oil transfer pump, it includes the pump housing, back shroud, front shroud, driving gear shaft, driven gear shaft, described driving gear shaft rear end and from
Movable gear shaft rear end is installed in rotation in the axis hole of back shroud, and driving gear shaft front end and driven gear shaft front end are rotatable
Be arranged in the axis hole of pump housing front end face, wherein said driving gear shaft front end is provided with the power transmission shaft of axially-extending, described biography
Moving axis passes from the axis hole of front shroud；The end face of described driving gear shaft rear end and the end face of driven gear shaft rear end and bonnet
It is provided with the first cavity volume between plate, between the described end face of driven gear shaft front end and the front end face of the pump housing and front shroud, is provided with second
Cavity volume, described driven gear shaft is provided with the through hole running through rear and front end；Described driving gear shaft and driven gear shaft are in the pump housing
Be meshed by gear, formed respectively between described driving gear shaft and the left and right sides of driven gear shaft and the pump housing oil suction chamber and
Go out oil pocket.
In technique scheme, due to the end face of driving gear shaft rear end and the end face of driven gear shaft rear end and back shroud
Between be provided with the first cavity volume, be provided with the second cavity volume between the end face of driven gear shaft front end and the front end face of the pump housing and front shroud,
And driven gear shaft is provided with the through hole running through rear and front end, such first cavity volume and the second cavity volume just can pass through driven gear shaft
Through hole communicate, make the pressure of the first cavity volume and the second cavity volume identical, make driving gear shaft and driven gear shaft be in floating type
State.Solving conventional fuel oil pump pump gear in operation process, pump gear can not float vertically and cause the scratch pump housing
Or the problem of pump cover end face, thus improve the reliability of pump, extend the service life of pump.This utility model uses tooth simultaneously
Wheel shaft, decreases the number of components of assembly and corresponding assembly process, so not only reduces cost, also improve the reliability of pump.
Certainly, as the equivalent of gear shaft, it would however also be possible to employ pump gear and power transmission shaft assemble.
The further technical scheme of this utility model is: be provided with an intercommunicating pore between described second cavity volume and oil suction chamber.
Using this structure, one is possible to prevent the hypertonia in the first cavity volume and the second cavity volume, and two can draw the interior oil let out
Back into hydraulic fluid port, thus improve the volumetric efficiency of pump.
Preferably, described driving gear shaft front end forms a step surface, described step surface and institute with power transmission shaft connecting place
The face area stating driving gear shaft rear end is equal；The face area of described driven gear shaft rear and front end is equal.
Preferably, described driving gear shaft rear end and driven gear shaft rear end are arranged on the axis hole of back shroud by lining
In, driving gear shaft front end and driven gear shaft front end are arranged in the axis hole of pump housing front end face by lining.
Preferably, described front shroud and back shroud are all bonded together with the pump housing by alignment pin and bolt, described protecgulum
It is respectively arranged with O between plate and back shroud and the pump housing, between described front shroud and the power transmission shaft of driving gear shaft, is pressed with oil sealing.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram in this utility model embodiment；
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Reference is:
1 pump housing 101 oil suction chamber 102 goes out oil pocket 103 intercommunicating pore
2 back shroud 2A the first cavity volumes
3 front shroud 3A the second cavity volumes
4 driving gear shaft 401 step surfaces
402 driving gear shaft rear end end face 403 power transmission shafts
5 driven gear shaft 5A through holes
501 driven gear shaft front end surface 502 driven gear shaft rear end end faces
6 oil sealing 7 lining 8 alignment pins
9 screw 10 O.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, this utility model is made further with accompanying drawing below in conjunction with embodiment
Explanation, the content that embodiment is mentioned is not to restriction of the present utility model.
In description of the present utility model, it is to be understood that term " first ", " second " are only used for describing purpose, and
It is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.At this utility model
Description in, " multiple " are meant that two or more, unless otherwise expressly limited specifically.Retouch of the present utility model
In stating, it should be noted that unless otherwise prescribed and limit, term " is installed ", " being connected ", " connection " should be interpreted broadly, example
As, can be to be mechanically connected or electrical connection, it is also possible to be the connection of two element internals, can be to be joined directly together, it is also possible to be logical
Cross intermediary to be indirectly connected to, for the ordinary skill in the art, described term can be understood as the case may be
Concrete meaning.
As shown in Figure 1, 2, preferred embodiment of the present utility model is: a kind of floating type fuel oil pump of gear shaft, its bag
Include the pump housing 1, back shroud 2, front shroud 3, driving gear shaft 4, driven gear shaft 5, front shroud 3 and back shroud 2 all by alignment pin 8
It is bonded together with the pump housing 1 with bolt 9, between front shroud 3 and back shroud 2 and the pump housing 1, is respectively arranged with O 10, driving gear shaft 4
Rear end and the rear end of driven gear shaft 5 be installed in rotation in the axis hole of back shroud 2, the front end of driving gear shaft 4 and from
The front end of movable gear shaft 5 is installed in rotation in the axis hole of the pump housing 1 front end face, and wherein the front end of driving gear shaft 4 is provided with axle
To the power transmission shaft 403 extended, power transmission shaft 403 passes from the axis hole of front shroud 3, is pressed with between front shroud 3 and power transmission shaft 403
Oil sealing 6；It is provided with the first cavity volume between driving gear shaft rear end end face 402 and driven gear shaft rear end end face 502 and back shroud 2
2A, is provided with the second cavity volume 3A, driven gear shaft between driven gear shaft front end surface 501 and the front end face of the pump housing 1 and front shroud 3
5 are provided with the through hole 5A running through rear and front end；The front end of driving gear shaft 4 forms a step surface with power transmission shaft 403 connecting place
401, step surface 401 and driving gear shaft rear end end face 402 area equation；The end face of driven gear shaft 5 rear and front end 501,502
Area equation；Driving gear shaft 4 and driven gear shaft 5 are meshed by gear in the pump housing 1, driving gear shaft 4 and driven tooth
Form oil suction chamber 101 respectively between the left and right sides and the pump housing 1 of wheel shaft 5 and go out oil pocket 102；Second cavity volume 3A and oil suction chamber 101
Between be provided with an intercommunicating pore 103.
As it is shown in figure 1, the rear end of the rear end of driving gear shaft 4 and driven gear shaft 5 is arranged on back shroud 2 by lining 7
Axis hole in, the front end of driving gear shaft 4 and the front end of driven gear shaft 5 are arranged on the axis hole of the pump housing 1 front end face by lining 7
In.
Owing to being provided with first between driving gear shaft rear end end face 402 and driven gear shaft rear end end face 502 and back shroud 2
Cavity volume 2A, is provided with the second cavity volume 3A between driven gear shaft front end surface 501 and the front end face of the pump housing 1 and front shroud 3, and driven
Gear shaft 5 be provided with again the through hole 5A running through rear and front end 501,502, such first cavity volume 2A and the second cavity volume 3A just can pass through from
The through hole 5A of movable gear shaft 5 communicates, and makes the pressure of the first cavity volume 2A and the second cavity volume 3A identical, makes driving gear shaft 4 and driven
Gear shaft 5 is in quick condition.Solving conventional fuel oil pump pump gear in operation process, pump gear can not float vertically
Move and cause the scratch pump housing or the problem of pump cover end face, thus improve the reliability of pump, extend the service life of pump.Simultaneously
This utility model uses gear shaft, decreases the number of components of assembly and corresponding assembly process, so not only reduces cost, also carry
The high reliability of pump.Certainly, as the equivalent of gear shaft, it would however also be possible to employ pump gear and power transmission shaft assemble.
Above-described embodiment is this utility model preferably implementation, and in addition, this utility model can be with other side
Formula realizes, and on the premise of conceiving without departing from the technical program, any obvious replacement is all at protection model of the present utility model
Within enclosing.
In order to allow those of ordinary skill in the art understand more easily this utility model relative to prior art improvement it
Place, accompanying drawings more of the present utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
Other elements a little, it is of the present utility model interior that those of ordinary skill in the art it is to be appreciated that these elements omitted also may make up
Hold.
Claims (5)
1. the floating type fuel oil pump of gear shaft, it is characterised in that: it includes the pump housing (1), back shroud (2), front shroud
(3), driving gear shaft (4), driven gear shaft (5), described driving gear shaft (4) rear end and driven gear shaft (5) rear end can turn
Being arranged in the axis hole of back shroud (2), driving gear shaft (4) front end and driven gear shaft (5) front end are rotatably mounted dynamicly
In the axis hole of the pump housing (1) front end face, wherein said driving gear shaft (4) front end is provided with the power transmission shaft (403) of axially-extending, institute
State power transmission shaft (403) to pass from the axis hole of front shroud (3)；Described driving gear shaft rear end end face (402) and driven gear shaft
The first cavity volume (2A), described driven gear shaft front end surface (501) and the pump housing it is provided with between rear end end face (502) and back shroud
(1) being provided with the second cavity volume (3A) between front end face and front shroud (3), described driven gear shaft (5) is provided with and runs through rear and front end
Through hole (5A)；Described driving gear shaft (4) and driven gear shaft (5) are meshed by gear in the pump housing (1), described active
Form oil suction chamber (101) between gear shaft (4) and the left and right sides of driven gear shaft (5) and the pump housing (1) respectively and go out oil pocket
(102).
The floating type fuel oil pump of gear shaft the most according to claim 1, it is characterised in that: described second cavity volume (3A) and
An intercommunicating pore (103) it is provided with between oil suction chamber (101).
The floating type fuel oil pump of gear shaft the most according to claim 1 and 2, it is characterised in that: described driving gear shaft
(4) front end forms a step surface (401), described step surface (401) and described driving gear shaft with power transmission shaft (403) connecting place
Rear end end face (402) area equation；Described driven gear shaft rear and front end end face (501,502) area equation.
The floating type fuel oil pump of gear shaft the most according to claim 1 and 2, it is characterised in that: described driving gear shaft
(4) rear end and driven gear shaft (5) rear end are arranged in the axis hole of back shroud (2) by lining (7), and driving gear shaft (4) is front
End and driven gear shaft (5) front end are arranged in the axis hole of the pump housing (1) front end face by lining (7).
The floating type fuel oil pump of gear shaft the most according to claim 1 and 2, it is characterised in that: described front shroud (3) and
Back shroud (2) is all bonded together with the pump housing (1) by alignment pin (8) and bolt (9), described front shroud (3) and back shroud (2)
And it is respectively arranged with O (10) between the pump housing (1), presses between the power transmission shaft (403) of described front shroud (3) and driving gear shaft (4)
Equipped with oil sealing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620592577.0U CN205744422U (en) | 2016-06-17 | 2016-06-17 | A kind of floating type fuel oil pump of gear shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620592577.0U CN205744422U (en) | 2016-06-17 | 2016-06-17 | A kind of floating type fuel oil pump of gear shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744422U true CN205744422U (en) | 2016-11-30 |
Family
ID=57386954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620592577.0U Expired - Fee Related CN205744422U (en) | 2016-06-17 | 2016-06-17 | A kind of floating type fuel oil pump of gear shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864032A (en) * | 2016-06-17 | 2016-08-17 | 湖南机油泵股份有限公司 | Fuel oil conveying pump with floating type gear shaft |
-
2016
- 2016-06-17 CN CN201620592577.0U patent/CN205744422U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864032A (en) * | 2016-06-17 | 2016-08-17 | 湖南机油泵股份有限公司 | Fuel oil conveying pump with floating type gear shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180617 |