CN209705332U - A kind of gear type oil pump for reducing oil liquid pressure fluctuation - Google Patents
A kind of gear type oil pump for reducing oil liquid pressure fluctuation Download PDFInfo
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- CN209705332U CN209705332U CN201920457569.9U CN201920457569U CN209705332U CN 209705332 U CN209705332 U CN 209705332U CN 201920457569 U CN201920457569 U CN 201920457569U CN 209705332 U CN209705332 U CN 209705332U
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- 239000007788 liquid Substances 0.000 title claims abstract description 42
- 230000033228 biological regulation Effects 0.000 claims abstract description 52
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- 238000013016 damping Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000005461 lubrication Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 238
- 239000010721 machine oil Substances 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 239000010705 motor oil Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000003967 crop rotation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000000505 pernicious effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
A kind of gear type oil pump for reducing oil liquid pressure fluctuation, it is related to engine lubrication system technical field, it includes the pump housing, pump cover, driving gear, driving shaft, driven gear, driven shaft, transmission gear and pressure regulator valve, pressure regulator valve includes pressure regulation valve plunger and pressure regulation valve spring in pressure regulating valve hole and pressure regulating valve hole, feedback oil pocket is equipped between one end and pressure regulator valve of pressure regulation valve plunger, pump cover is equipped with a feedback oil pipe, one end of feedback oil pipe is equipped with closure screw, the other end is connected to feedback oil pocket, feedback oil pipe offers feedback oil pipe hole, the pump housing is equipped with the feedback oil channel for being connected to feedback oil pipe hole and engine main oil gallery, feeding back in oily channel includes one section of damping hole path, the internal diameter for damping hole path is less than the internal diameter for feeding back oily channel.The utility model can preferably filter the oil liquid pressure fluctuation from engine main oil gallery feedback, largely reduce the case where pressure regulator valve opens maloperation caused by occurring because of oil liquid pressure fluctuation.
Description
Technical field
It is especially a kind of for reducing oil liquid pressure fluctuation the utility model relates to engine lubrication system technical field
Gear type oil pump.
Background technique
With the continuous development of engine technology, industry is more next to the technical requirements of the lubricating oil pump in engine lubrication system
It is higher, for the engine of different styles, need matching lubricating oil pump for engine provide oil pressure is stable, flow is abundant,
The lubricating oil of reliable working performance.
The structure type of lubricating oil pump can be divided into two class of gear type and rotator type, wherein the working principle of gear type oil pump
It is that when the engine is working, the transmission gear of the driving gear band motivation oil pump on camshaft makes to be fixed on driving gear shaft
Driving gear rotation, to drive the rotation of driven tooth crop rotation opposite direction, by machine oil from oil suction chamber along backlash and pump wall send to
Oil outlet chamber.In this way, just forming low pressure at oil suction chamber and generating suction, the machine oil inspiration oil pocket in oil sump.Due to driving and driven
Gear constantly rotates, and machine oil is just constantly pressed to the position of needs.
Pressure regulator valve generally can be all arranged in existing gear type oil pump, facilitate when engine oil pressure is excessively high by a part of machine oil
Oil suction chamber is transmitted back to from oil outlet chamber to wait for recycling again, thus guarantee that the oil liquid pressure in engine main oil gallery is steady, however in reality
In the course of work of border, there are certain pressure oscillation, the oil pressure in wave process will appear short for oil pressure in engine main oil gallery
Temporary pressure peak can be such that pressure regulator valve opens, due to pressure when pressure peak is just above the cracking pressure threshold value of pressure regulator valve
Engine main oil gallery oil liquid pressure restores normal after peak value is quickly decorporated, but this when of pressure regulator valve opening (is equivalent to pressure
Valve maloperation caused by fluctuating), it is further exacerbated by so as to cause the oil liquid pressure fluctuation in engine main oil gallery, is followed into pernicious
Ring status.
Utility model content
Problem to be solved in the utility model is to provide a kind of gear type machine oil for reducing oil liquid pressure fluctuation
Pump can preferably filter the oil liquid pressure fluctuation from engine main oil gallery feedback, largely reduce and occur because of oil
Pressure regulator valve caused by hydraulic fluctuation opens the case where maloperation.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: one kind is for reducing oil liquid pressure
The gear type oil pump of fluctuation, including the pump housing, pump cover, driving gear, driving shaft, driven gear, driven shaft, transmission gear and
Pressure regulator valve, the pump cover are mounted on the pump housing, one end of the driving shaft is mounted on pump cover, the other end passes through the pump housing and with biography
Moving gear connection, the driving gear are mounted on driving shaft, and the both ends of the driven shaft are separately mounted on the pump housing and pump cover,
The driven gear is mounted on driven shaft, and the driving gear is engaged with driven gear, and the pump housing is equipped with oil suction chamber and goes out
Oil pocket, the oil suction chamber are equipped with oil inlet, and the oil outlet chamber is equipped with oil outlet, and the pressure regulator valve is fixed on pump cover, institute
Stating pressure regulator valve includes pressure regulating valve hole and the pressure regulation valve plunger and pressure regulation valve spring that are arranged in pressure regulating valve hole, the pressure regulator valve
One end is blocked equipped with pressure regulator valve, and the fuel feed hole of connection oil outlet chamber is provided on the hole wall of the pressure regulating valve hole and is connected to oil suction chamber
Oil outlet, the pressure regulation valve spring push against pressure regulation valve plunger in its natural state so as to hinder the outer wall of the pressure regulation valve plunger
Oil outlet is blocked, feedback oil pocket is equipped between one end and pressure regulator valve of the pressure regulation valve plunger, the pump cover is equipped with one instead
Oil pipe is presented, one end of the feedback oil pipe is equipped with and blocks screw, the other end is connected to feedback oil pocket, and the feedback oil pipe opens up
There is feedback oil pipe hole, the pump housing is equipped with the feedback oil channel for being connected to feedback oil pipe hole and engine main oil gallery, described
Feeding back in oily channel includes one section of damping hole path, and the internal diameter of the damping hole path is less than the internal diameter for feeding back oily channel, described
Arc groove is offered on the front end face of oil outlet, when the oil pressure in the engine main oil gallery is excessively high, machine oil therein can
Entered in feedback oil pipe by the oily channel of the feedback, then into the feedback oil pocket of pressure regulator valve, to push the tune
Pressure valve plunger is mobile and makes pressure regulator valve spring-compressed, and the arc groove on the oil outlet front end face, which is first opened, at this time keeps machine oil logical
Enter in oil suction chamber, the pressure regulation valve plunger persistently moves and compressing pressure regulation valve spring can be such that the oil outlet fully opens.
Further, the pump cover be equipped with connection oil outlet chamber safety valve, the safety valve include safe valve opening and
Safe valve plunger and safety valve spring in safe valve opening are set, and one end of the safety valve is blocked equipped with safety valve, described
External drain tap can be connected to by being provided on the hole wall of safe valve opening, and the safety valve spring pushes against safe valve rod in its natural state
Plug is so as to make the outer wall of safe valve plunger stop drain tap.
Further, one end of the safe valve plunger offers the pit that can store engine oil impurity.
Further, the pressure regulation valve plunger includes rhabodoid and is respectively fixedly connected with tubular at rhabodoid both ends
Body and pan are the inclined-plane being obliquely installed close to the cylindrical body end face of the rhabodoid and pan end face, far from institute
The holding tank for axially offering on the cylindrical body end face of rhabodoid and accommodating pressure regulation valve spring is stated, the outside wall surface of the cylindrical body can hinder
Block oil outlet.
Wherein, it is arranged at intervals in the outside wall surface of the cylindrical body and multiple can be used for oil storage to for pressure regulator valve plunger motion
When provide lubrication annular groove.
Further, the bottom of the oil suction chamber be equipped with oil groove, below the driving gear and driven gear into
The oil groove that draws of a connection oil groove is offered on oil pocket bottom surface respectively, the oil groove that draws is in half selenodont, the slot for drawing oil groove
Transitional slope is connected between bottom surface and the bottom surface of oil suction chamber.
Preferably, the pump housing is equipped with interconnecting piece for connecting with engine cylinder body, the interconnecting piece and the pump housing it
Between be connected with arc reinforcing rib.
It is highly preferred that the driving shaft and driven shaft are hollow shaft.
It is highly preferred that offering the pump housing axis hole for installing driving shaft on the pump housing, the pump housing axis hole is close to pump
The internal diameter of internal bottom surface one end is greater than the internal diameter of its other end.
It is highly preferred that the inner wall of the oil inlet is equipped with the step surface for being cooperatively connected with inlet line.
The utility model has the beneficial effects that: should be for reducing the gear type oil pump that oil liquid pressure fluctuates worked
Cheng Zhong, encounter oil liquid pressure in engine main oil gallery it is excessive when, machine oil can by feed back oily channel enter feedback oil pipe again into
Enter into the feedback oil pocket of pressure regulator valve, to push pressure regulation valve plunger, so that the oil outlet of pressure regulator valve is opened, pressure regulator valve at this time
Cavity has been connected to oil outlet chamber and oil suction chamber, since oil outlet chamber is high pressure conditions, so when machine oil can be by pressure regulator valve from oil outlet chamber
A part adjusting of realization to oil pressure into oil suction chamber is returned to, to guarantee the stable operation of lubricating system.
Due to being provided with one section of damping hole path in feeding back oily channel, when the pressure fluctuation process in engine main oil gallery
In appearance of short duration pressure oscillation peak value when, it is anti-that which can filter out such oil liquid pressure fluctuation
Feedback, to largely reduce the case where pressure regulator valve caused by appearance is fluctuated because of oil liquid pressure opens maloperation.
In addition, arc groove has been opened up due to being arranged on the front end face of oil outlet, so that engine is in low-speed running
Can arc groove by first opening come slow draining (thrust that pressure regulation valve plunger is subject at this time is smaller), play preferable pressure stabilizing
Effect can reduce the oil liquid pressure fluctuation in engine main oil gallery；When engine is when running at high speed, since oil mass is big, so that
The thrust that pressure regulation valve plunger is subject to is larger, and oil outlet also can be opened integrally after arc groove is opened, to meet a large amount of drainings
Demand, thus preferably maintain main oil gallery oil liquid pressure, just realize well meet engine different rotating speeds need in this way
The purpose asked.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the transmission gear side in the utility model embodiment；
Fig. 2 be Fig. 1 in A-A to schematic cross-sectional view；
Fig. 3 is the schematic cross-sectional view of B-B direction in Fig. 1；
Fig. 4 is the structural schematic diagram of pressure regulation plunger in embodiment；
Fig. 5 is the overall structure diagram in embodiment；
Fig. 6 is the overall structure of the explosion figure in embodiment；
Fig. 7 is the structural schematic diagram of pump cover in embodiment；
Fig. 8 be Fig. 7 in C-C to schematic cross-sectional view；
Fig. 9 is the structural schematic diagram of embodiment middle pump body；
Figure 10 be Fig. 9 in D-D to schematic cross-sectional view；
Figure 11 is the schematic side view of embodiment middle pump body；
Figure 12 be Figure 11 in E-E to schematic cross-sectional view.
Appended drawing reference are as follows:
1 --- pump housing 1a --- oil suction chamber 1b --- oil outlet chamber
1c --- oil inlet 1d --- oil outlet 2 --- pump cover
3 --- driving gear 4 --- driving shaft 5 --- driven gears
6 --- driven shaft 7 --- transmission gear 8 --- pressure regulator valves
8a --- pressure regulation valve plunger 8a1 --- rhabodoid 8a2 --- cylindrical body
8a3 --- annular groove 8a4 --- pan 8b --- pressure regulation valve spring
9a --- fuel feed hole 9b --- oil outlet 9b1 --- arc groove
--- feedback oil pocket 10 --- feedback oil pipe 10a --- blocks screw to 9c
10b --- feedback oil pipe hole 11 --- feeding back oily channel 12 --- damping hole path
13 --- oil groove 14 --- drawing oil groove 14a --- transitional slopes
15 --- interconnecting piece 16 --- arc reinforcing rib 17 --- pump housing axis holes
18 --- safety valve 18a --- safe valve plunger 18b --- safety valve springs
18c --- drain tap 18d --- pit.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
It needs to illustrate in advance, in the present invention unless specifically defined or limited otherwise, term " installation ",
The terms such as " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be directly connected, can also can be inside two elements indirectly connected through an intermediary
Connection.For the ordinary skill in the art, above-mentioned term can be understood in the utility model as the case may be
In concrete meaning.
In addition, in the present invention unless specifically defined or limited otherwise, fisrt feature in second feature "upper" or
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.Term " on ", "lower", "front", "rear", "left", "right", "vertical", " water
It is flat ", "top", "bottom" "inner", the instructions such as "outside" orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
As shown in figs. 1-12, it is a kind of for reducing oil liquid pressure fluctuation gear type oil pump, including the pump housing 1, pump cover 2,
Driving gear 3, driving shaft 4, driven gear 5, driven shaft 6, transmission gear 7 and pressure regulator valve 8, pump cover 2 are mounted on the pump housing 1,
One end of driving shaft 4 is mounted on pump cover 2, the other end passes through the pump housing 1 and is connect with transmission gear 7, and driving gear 3 is mounted on master
On moving axis 4, the both ends of driven shaft 6 are separately mounted on the pump housing 1 and pump cover 2, and driven gear 5 is installed on the driven shaft 6, driving tooth
Wheel 3 is engaged with driven gear 5, and the pump housing 1 is equipped with oil suction chamber 1a and oil outlet chamber 1b, and oil suction chamber 1a is equipped with oil inlet 1c, oil outlet chamber 1b
Equipped with oil outlet 1d, pressure regulator valve 8 is fixed on pump cover 2, and pressure regulator valve 8 includes pressure regulating valve hole and is arranged in pressure regulating valve hole
Pressure regulation valve plunger 8a and pressure regulation valve spring 8b, one end of pressure regulator valve 8 blocks equipped with pressure regulator valve, is provided on the hole wall of pressure regulating valve hole
It is connected to the fuel feed hole 9a of oil outlet chamber 1b and is connected to the oil outlet 9b of oil suction chamber 1a, pressure regulation valve spring 8b is pushed against in its natural state
Pressure regulation valve plunger 8a is so as to making the outer wall of pressure regulation valve plunger 8a stop oil outlet 9b, one end of pressure regulation valve plunger 8a and pressure regulation
Feedback oil pocket 9c is equipped between valve 8, pump cover 2 is equipped with a feedback oil pipe 10, and one end of feedback oil pipe 10 is equipped with closure spiral shell
Nail 10a, the other end are connected to feedback oil pocket 9c, and feedback oil pipe 10 offers feedback oil pipe hole 10b, and the pump housing 1 is equipped with for connecting
The feedback oil channel 11 of logical feedback oil pipe hole 10b and engine main oil gallery, feeding back in oily channel 11 includes one section of damping hole path
12, the internal diameter of damping hole path 12 is less than the internal diameter for feeding back oily channel 11, offers arc groove on the front end face of oil outlet 9b
9b1, when the oil pressure in engine main oil gallery is excessively high, machine oil therein can enter feedback oil pipe 10 by feeding back oily channel 11
In, then into the feedback oil pocket 9c of pressure regulator valve 8, to push pressure regulation valve plunger 8a mobile and press pressure regulation valve spring 8b
Contracting, the arc groove 9b1 on oil outlet 9b front end face, which is first opened, at this time is passed through machine oil in oil suction chamber 1a, and pressure regulation valve plunger 8a is held
Continue movement and compressing pressure regulation valve spring 8b can be such that the oil outlet 9b fully opens.
The gear type oil pump for reducing oil liquid pressure fluctuation that above embodiment provides during the work time, encounters
When oil liquid pressure in engine main oil gallery is excessive, machine oil can enter back into tune into feedback oil pipe 10 by feeding back oily channel 11
In the feedback oil pocket 9c of pressure valve 8, to push pressure regulation valve plunger 8a, so that the oil outlet 9b of pressure regulator valve 8 is opened, pressure regulator valve at this time
8 cavity has been connected to oil outlet chamber 1b and oil suction chamber 1a, due to oil outlet chamber 1b be high pressure conditions, so when machine oil can pass through pressure regulator valve
8 return to a part adjusting of realization to oil pressure into oil suction chamber 1a from oil outlet chamber 1b, to guarantee the stable operation of lubricating system.
Due to being provided with one section of damping hole path 12 in feeding back oily channel 11, the pressure fluctuation in engine main oil gallery
When the of short duration pressure oscillation peak value of appearance in the process, which can filter out such oil liquid pressure wave
Dynamic feedback, to largely reduce the case where pressure regulator valve 8 caused by appearance is fluctuated because of oil liquid pressure opens maloperation.
In addition, due to oil outlet 9b is set front end face on opened up arc groove 9b1 so that engine low speed transport
When turning can arc groove 9b1 by first opening come slow draining (thrust that pressure regulation valve plunger 8a is subject at this time is smaller), play
Preferable pressure stabilization function can reduce the oil liquid pressure fluctuation in engine main oil gallery；When engine is when running at high speed, due to oil
Amount is big, so that the thrust that pressure regulation valve plunger 8a is subject to is larger, oil outlet 9b also can be opened integrally after arc groove 9b1 is opened
It opens, to meet the needs of a large amount of drainings, to preferably maintain the oil liquid pressure of main oil gallery, just realizes satisfaction well in this way
The purpose of engine different rotating speeds demand.
Further, pump cover 2 is equipped with the safety valve 18 of connection oil outlet chamber 1b, and safety valve 18 includes safe valve opening and setting
One end of safe valve plunger 18a and safety valve spring 18b in safe valve opening, safety valve 18 are blocked equipped with safety valve, safety
External drain tap 18c can be connected to by being provided on the hole wall of valve opening, and safety valve spring 18b pushes against safe valve plunger in its natural state
For 18a so as to make the outer wall of safe valve plunger 18a stop drain tap 18c, the elastic force of above-mentioned safety valve spring 18b is greater than tune
The elastic force of pressure valve spring 8b, in this way when system oil liquid pressure is excessive, in addition to pressure regulator valve 8 open, safety valve 18 can also open from
And draining is carried out, to guarantee that the oil liquid pressure of system is stablized.
Wherein, one end of safe valve plunger 18a offers the pit 18d that can store engine oil impurity, can reduce impurity entrance
Valve opening wall surface reduces the clamping stagnation risk of safe valve plunger 18a.
Further, pressure regulation valve plunger 8a includes rhabodoid 8a1 and is respectively fixedly connected with tubular at the both ends rhabodoid 8a1
Body 8a2 and pan 8a4 is to be obliquely installed close to the end face cylindrical body 8a2 of rhabodoid 8a1 and the end face pan 8a4
Inclined-plane, which can slow down open pressure release after the Oil shocking that is subject to when closing, close pressure regulation valve plunger 8a smooth, have
Pressure regulator valve 8 is closed and is opened conducive to pressure regulation valve plunger 8a real time kinematics, adjusts the oil liquid pressure of engine main oil gallery well,
Another aspect pressure regulation valve plunger 8a is small to the impact force of oil liquid, reduces impact oil liquid when pressure regulator valve 8 is closed and splashes " oil bloom " production
Raw pressure oscillation reduces operating noise, adjusts in addition, axially offering receiving on the end face cylindrical body 8a2 far from rhabodoid 8a1
The outside wall surface of the holding tank of pressure valve spring 8b, cylindrical body 8a2 can stop oil outlet 9b.
Further, it can be spaced that setting is multiple to can be used for oil storage to for pressure regulation valve rod in the outside wall surface of cylindrical body 8a2
The annular groove 8a3 of lubrication is provided when filling in 8a movement, pressure regulation valve plunger 8a surface abrasion can be reduced, can also accommodate certain impurity,
To reduce pressure regulation valve plunger 8a clamping stagnation risk.
Further, oil groove 13 can be set in the bottom of oil suction chamber 1a, and is being located at driving gear 3 and driven gear 5
Open up a connection oil groove 13 on the bottom surface oil suction chamber 1a of lower section respectively draws oil groove 14, draws oil groove 14 in half selenodont, draws oil
It is connected with transitional slope 14a between the groove bottom of slot 14 and the bottom surface of oil suction chamber 1a, the pump tooth when oil pump runs at high speed can be improved
Cavitation caused by chamber oil suction is discontented enters the case where oil outlet chamber of high pressure is to generate cavitation erosion, and transitional slope 14a is bootable
Oil liquid is appeared on the stage into tooth cavity (position of 1 inner cavity of the pump housing where driving gear 3 and driven gear 5), is all filled out convenient for entire tooth cavity
Full oil liquid.
Preferably, the pump housing 1 is equipped with the interconnecting piece 15 for connecting with engine cylinder body, interconnecting piece 15 and the pump housing 1
Between be connected with arc reinforcing rib 16, the case where stress is concentrated can be improved, the whole structural strength of the enhancing pump housing 1 improves reliable
Property, and arc reinforcing rib 16 can reduce material utilization amount to a certain extent, reduce weight, accomplish product lightweight and economy
Property.
More preferably, driving shaft 4 and driven shaft 6 are hollow shaft, can not only reduce the total weight of oil pump, also
Noise inside absorbable oil pump, plays a degree of Noise Reduction.
More preferably, the pump housing axis hole 17 for installing driving shaft 4 is offered on the pump housing 1, pump housing axis hole 17 is close
The internal diameter of 1 inner bottom surface one end of the pump housing is greater than the internal diameter of its other end, to form avoiding structure, the big one end of internal diameter is not and actively
Axis 4 directly contacts, and can reduce the friction generated when driving shaft 4 moves, reduce power consumption, and also helps lubricating oil and reach the pump housing
The other end of axis hole 17 is gone, and reduces the abrasion between driving shaft 4 and pump housing axis hole 17.
In addition, in the present embodiment, the step for being cooperatively connected with inlet line is additionally provided on the inner wall of oil inlet 1c
Face, convenient and inlet line location and installation.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it
Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the interior of the utility model
Hold.
Claims (10)
1. it is a kind of for reducing oil liquid pressure fluctuation gear type oil pump, including the pump housing (1), pump cover (2), driving gear (3),
Driving shaft (4), driven gear (5), driven shaft (6), transmission gear (7) and pressure regulator valve (8), the pump cover (2) are mounted on pump
On body (1), one end of the driving shaft (4) is mounted on pump cover (2), the other end passes through the pump housing (1) and is connected with transmission gear (7)
It connects, the driving gear (3) is mounted on driving shaft (4), and the both ends of the driven shaft (6) are separately mounted to the pump housing (1) and pump
It covers on (2), the driven gear (5) is mounted on driven shaft (6), and the driving gear (3) is engaged with driven gear (5), institute
The pump housing (1) is stated equipped with oil suction chamber (1a) and oil outlet chamber (1b), the oil suction chamber (1a) is equipped with oil inlet (1c), the oil outlet chamber
(1b) is equipped with oil outlet (1d), it is characterised in that: the pressure regulator valve (8) is fixed on pump cover (2), the pressure regulator valve (8)
Including pressure regulating valve hole and the pressure regulation valve plunger (8a) and pressure regulation valve spring (8b) that are arranged in pressure regulating valve hole, the pressure regulator valve
(8) one end is blocked equipped with pressure regulator valve, be provided on the hole wall of the pressure regulating valve hole fuel feed hole (9a) of connection oil outlet chamber (1b) with
And the oil outlet (9b) of connection oil suction chamber (1a), the pressure regulation valve spring (8b) push against pressure regulation valve plunger (8a) in its natural state
So as to stop the outer wall of the pressure regulation valve plunger (8a) oil outlet (9b), one end of the pressure regulation valve plunger (8a) and tune
Feedback oil pocket (9c) is equipped between pressure valve (8), the pump cover (2) is equipped with a feedback oil pipe (10), the feedback oil pipe
(10) one end is equipped with and blocks screw (10a), the other end is connected to feedback oil pocket (9c), and the feedback oil pipe (10) offers
It feeds back oil pipe hole (10b), the pump housing (1) is equipped with the feedback for being connected to feedback oil pipe hole (10b) and engine main oil gallery
Oily channel (11) includes one section of damping hole path (12) in the oily channel (11) of the feedback, described to damp the interior of hole path (12)
Diameter is less than the internal diameter for feeding back oily channel (11), arc groove (9b1) is offered on the front end face of the oil outlet (9b), when described
When oil pressure in engine main oil gallery is excessively high, machine oil therein can enter feedback oil pipe (10) by the oily channel (11) of the feedback
In, then into the feedback oil pocket (9c) of the pressure regulator valve (8), to push the pressure regulation valve plunger (8a) mobile and make
Pressure regulation valve spring (8b) compression, the arc groove (9b1) on oil outlet (9b) front end face, which is first opened, at this time is passed through machine oil
In oil suction chamber (1a), the pressure regulation valve plunger (8a), which persistently moves and compresses pressure regulation valve spring (8b), can make the oil outlet (9b)
It fully opens.
2. the gear type oil pump according to claim 1 for reducing oil liquid pressure fluctuation, it is characterised in that: the pump
The safety valve (18) that (2) are equipped with connection oil outlet chamber (1b) is covered, the safety valve (18) includes that safe valve opening and setting are being pacified
One end of safe valve plunger (18a) and safety valve spring (18b) in full valve hole, the safety valve (18) is equipped with safe valve plug
It fills in, external drain tap (18c) can be connected to by being provided on the hole wall of the safe valve opening, and the safety valve spring (18b) is in nature
Safe valve plunger (18a) is pushed against under state so as to make the outer wall of safe valve plunger (18a) stop drain tap (18c).
3. the gear type oil pump according to claim 2 for reducing oil liquid pressure fluctuation, it is characterised in that: the peace
One end of full valve plunger (18a) offers the pit (18d) that can store engine oil impurity.
4. the gear type oil pump according to claim 3 for reducing oil liquid pressure fluctuation, it is characterised in that: the tune
Pressure valve plunger (8a) includes rhabodoid (8a1) and is respectively fixedly connected with cylindrical body (8a2) and cake at the both ends rhabodoid (8a1)
Shape body (8a4) is to be obliquely installed close to the cylindrical body end face (8a2) of the rhabodoid (8a1) and the end face pan (8a4)
Inclined-plane, far from the rhabodoid (8a1) the end face cylindrical body (8a2) on axially offer accommodate pressure regulation valve spring (8b) appearance
Receive slot, the outside wall surface of the cylindrical body (8a2) can stop oil outlet (9b).
5. the gear type oil pump according to claim 4 for reducing oil liquid pressure fluctuation, it is characterised in that: the cylinder
Be arranged at intervals in the outside wall surface of shape body (8a2) it is multiple can be used for oil storage to for pressure regulation valve plunger (8a) move when lubrication is provided
Annular groove (8a3).
6. it is according to claim 5 for reducing oil liquid pressure fluctuation gear type oil pump, it is characterised in that: it is described into
The bottom of oil pocket (1a) is equipped with oil groove (13), is located at bottom oil suction chamber (1a) below the driving gear (3) and driven gear (5)
Drawing oil groove (14) for a connection oil groove (13) is offered on face respectively, described draw oil groove (14) are described to draw oil in half selenodont
Transitional slope (14a) is connected between the groove bottom of slot (14) and the bottom surface of oil suction chamber (1a).
7. the gear type oil pump according to claim 6 for reducing oil liquid pressure fluctuation, it is characterised in that: the pump
Body (1) is equipped with the interconnecting piece (15) for connecting with engine cylinder body, is connected between the interconnecting piece (15) and the pump housing (1)
Arc reinforcing rib (16).
8. the gear type oil pump according to claim 7 for reducing oil liquid pressure fluctuation, it is characterised in that: the master
Moving axis (4) and driven shaft (6) are hollow shaft.
9. the gear type oil pump according to claim 8 for reducing oil liquid pressure fluctuation, it is characterised in that: the pump
The pump housing axis hole (17) for installing driving shaft (4) is offered on body (1), the pump housing axis hole (17) is close to the pump housing (1) interior bottom
The internal diameter of face one end is greater than the internal diameter of its other end.
10. the gear type oil pump according to claim 9 for reducing oil liquid pressure fluctuation, it is characterised in that: described
The inner wall of oil inlet (1c) is equipped with the step surface for being cooperatively connected with inlet line.
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| CN201920457569.9U CN209705332U (en) | 2019-04-08 | 2019-04-08 | A kind of gear type oil pump for reducing oil liquid pressure fluctuation |
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| CN201920457569.9U CN209705332U (en) | 2019-04-08 | 2019-04-08 | A kind of gear type oil pump for reducing oil liquid pressure fluctuation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882613A (en) * | 2019-04-08 | 2019-06-14 | 湖南机油泵股份有限公司 | A kind of gear type oil pump for reducing oil liquid pressure fluctuation |
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2019
- 2019-04-08 CN CN201920457569.9U patent/CN209705332U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882613A (en) * | 2019-04-08 | 2019-06-14 | 湖南机油泵股份有限公司 | A kind of gear type oil pump for reducing oil liquid pressure fluctuation |
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Address after: No.69 Beizheng street, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee after: Hunan Meihu Intelligent Manufacturing Co.,Ltd. Country or region after: China Address before: No.69 Beizheng street, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee before: Hunan Oil Pump Co.,Ltd. Country or region before: China |