A kind of auxiliary lubricating oil pump
Technical field
The present invention relates to engine lubrication system, a kind of specifically auxiliary lubricating oil pump.
Background technique
Engineering machinery or special car at work, when engine is in biggish tilt angle, the shallow Qu Huiji of oil sump
A large amount of machine oil is stayed, causes oil sump depth area oil mass inadequate, lubricating oil pump is emptied, and output engine oil pressure is inadequate, and engine is caused to damage
It is bad.
General solution is to increase by a section auxiliary pump in lubricating oil pump, sucks back oily bottom in the shallow area's machine oil of oil sump accumulating
The area Ke Shen, and utilize the pressure oil lubrication auxiliary pump of lubricating oil pump main pump itself.
And auxiliary pump can not be increased in the case where space is inadequate, in lubricating oil pump, it is necessary to one auxiliary be installed in other positions
Pump, but since auxiliary pump can have the case where being emptied for a long time, this just determines that auxiliary pump cannot lean on the pressure of itself glossy
It is sliding, need a stable pressure oil-source to carry out active lubrication.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of auxiliary lubricating oil pump, which has to carry out itself
The structure of lubrication.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of auxiliary lubricating oil pump, including sliding tooth
Wheel, the pump housing, pump cover, pump shaft, the both ends of the pump shaft are arranged in respectively in the axis hole of the pump housing and pump cover;On the pump housing and pump cover
It is equipped with oil leab, the oil of main oil gallery for being introduced at the axis hole of the pump housing and pump cover by the oil leab.
The further technical solution of the present invention is: bushing, each bushing are pressed in the axis hole of the pump housing and pump cover
Length be respectively less than the length of axis hole, an annular groove and one and the annular groove phase are equipped on the hole wall of each axis hole
The axial strip groove of friendship, the oil leab are connected with the annular groove, and the pressure oil from main oil gallery can successively lead to
Cross the gap that oil leab, annular groove, strip groove are flowed between pump shaft and bushing.
In one embodiment, the pump shaft includes driving shaft and driven shaft, is equipped with driving gear on the driving shaft,
Driven gear is installed on the driven shaft.
The beneficial effects of the present invention are: the oil leab will be for that will lead due to being equipped with oil leab on the pump housing and pump cover
The oil of oil duct is introduced at the axis hole of the pump housing and pump cover, ensures that obtain steady and sustained profit between pump shaft and axis hole in this way
It is sliding.In further technical solution, since the length of bushing is less than the length of axis hole, and it is equipped with mutually on the hole wall of axis hole
The annular groove and strip groove of connection, intermediate annular groove are communicated with oil leab, can be thus introduced into the pressure oil of main oil gallery
Gap between pump shaft and bushing, is lubricated pump shaft and bushing.
Detailed description of the invention
Fig. 1 is the lubricating oil pump overall structure diagram in the embodiment of the present invention 1;
Fig. 2 is the enlarged structure schematic diagram of part A in Fig. 1;
Appended drawing reference are as follows:
1 --- driving gear 2 --- pump housing 3 --- pump cover
4 --- driving shaft 41 --- driving gear 5 --- driven shafts
51 --- driven gear 6 --- bushing 7 --- annular grooves
8 --- oil leab 9 --- strip grooves.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.In the description of the present invention, the meaning of " plurality " is two or two
More than, unless otherwise specifically defined.In the description of the present invention, it should be noted that unless otherwise specified and limited,
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, are also possible to two
Connection inside element, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill of this field
For personnel, the concrete meaning of the term can be understood as the case may be.
As shown in Figure 1, 2, the preferred embodiment of the present invention is: a kind of auxiliary lubricating oil pump, including driving gear 1, the pump housing 2,
Pump cover 3, pump shaft, shown pump shaft include driving shaft 4 and driven shaft 5, and driving gear 41, driven shaft 5 are wherein equipped on driving shaft 4
On driven gear 51 is installed;The both ends of the pump shaft are arranged in respectively in the axis hole of the pump housing 3 and pump cover 4;The pump housing 3 and pump
Bushing 6 is pressed in the axis hole of lid 4, the length of each bushing 6 is respectively less than the length of axis hole, on the hole wall of each axis hole
The axial strip groove 9 intersected equipped with an annular groove 7 and one with the annular groove 7;It is all provided on the pump housing 2 and pump cover 3
There is oil leab 8, the oil leab 8 is connected with the annular groove 7, and the pressure oil from main oil gallery can pass sequentially through profit
Grease way 8, annular groove 7, strip groove 9 are flowed into the gap between pump shaft and bushing 6.
When installation, the oil leab 8 of lubricating oil pump is connected to main oil gallery, since the length of bushing 6 is less than axis hole
Length, and the annular groove 7 interconnected and strip groove 9, intermediate annular groove 7 and 8 phase of oil leab are equipped on the hole wall of axis hole
It is logical, the pressure oil of main oil gallery can be thus introduced into the gap between pump shaft and bushing 6, pump shaft and bushing 6 are lubricated.
Lubricating oil pump provided in this embodiment is gear type oil pump, and in addition to this, the lubricating oil pump of other structures can equally adopt
With the lubrication system of the present embodiment, this is obvious.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.