CN104819152B - Inlay the connection formula gear oil pump pump housing - Google Patents
Inlay the connection formula gear oil pump pump housing Download PDFInfo
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- CN104819152B CN104819152B CN201510260283.8A CN201510260283A CN104819152B CN 104819152 B CN104819152 B CN 104819152B CN 201510260283 A CN201510260283 A CN 201510260283A CN 104819152 B CN104819152 B CN 104819152B
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- pump housing
- pump
- mounting holes
- oil pump
- gear oil
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Abstract
Inlay the connection formula gear oil pump pump housing, the rear end of the pump housing is integrally formed with bonnet, there are the pinion mounting holes in 8-shaped for being used for installing driving gear and driven gear in the pump housing, the pinion mounting holes extend from the front end face of the pump housing towards the direction of the bonnet, also there is the bearing of trend identical driving gear shaft mounting hole and driven gear shaft mounting hole of bearing of trend and the pinion mounting holes in the pump housing, the front end face of the pump housing also has and the integrally formed circle boss protruded forward of the pump housing, the boss is located at the periphery of the pinion mounting holes.The present invention is integrally formed with bonnet, applied in gear oil pump, the present invention is connected with protecgulum may make up pump case, so as to become the three stage structure of conventional gears oil pump into two-period form structure, axial dimension is shortened, installation and dismounting is simplified, reduces the overall cumulative errors of product, the installation accuracy of each part is improved, the reliability of gear oil pump is improved.
Description
Technical field
The present invention relates to gear oil pump field, a kind of edge connection formula gear oil pump pump housing is related in particular to.
Background technology
Gear oil pump is at home and abroad widely used in loading machine, excavator, crane as the dynamical element of hydraulic system
In hydraulic system etc. engineering machinery.Gear oil pump has simple in construction, small volume, lightweight, and self-suction is strong, to oil contamination
The characteristic such as insensitive, gear oil pump is widely used in technical field of hydraulic pressure particularly construction machinery industry.Existing operating mode becomes
Change, using the expansion in field, conventional middle high-pressure gear oil-pump can not meet the use requirement of user gradually, and due to knot
Structure limits that there are the following problems：
1. referring to Fig. 1, the pump housing of existing gear oil pump is generally the hollow cavity of both ends open, and the pump housing, protecgulum and bonnet are
Three stage structure, the pump housing with protecgulum and bonnet by connecting and composing pump case, and the positioning between the pump housing and protecgulum and bonnet is only by straight
The less alignment pin in footpath or roll pin are realized.In alignment error, mismachining tolerance, high pressure (28MPa~31.5MPa), height
Under speed and the operating mode such as vibration frequency, excessive shearing force easily causes the failure of alignment pin, so as to cause gear oil pump too early
Failure；
2. the protecgulum of existing gear oil pump, the pump housing and bonnet are three stage structure, the technique of the pump housing and bonnet is disperseed, existing
Level of processing is difficult while ensureing the dimensional accuracy of each member mounting holes.Meanwhile, process it is scattered, the multiple clamping of parts adds
Work, causes the overall cumulative errors of product larger, causes the radial load of pump bearing to increase, and overall moment of friction is increased, close
Sealing assembly difficulty is larger, adds especially pronounced in the starting torque of gear oil pump, high-pressure gear pump；
3. the pump housing of existing gear oil pump is generally single plane symmetrical structure, exists in production and processing engineering and be difficult to remove
The shortcomings of transporting, be difficult in clamping, circular flow easily to collide with；Do not meet towards assembling manufacturing and the gear oil pump of assembling and design reason
Read；The batch production processing of flexible manufacturing system is not met yet；
4. the pump housing of existing gear oil pump is in design, though the simple principle designed in view of product component, zero
Between part can not effective cross-reference, can not more be directly integrated other products.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of simplified mounting structure, erection ＆ lift precision, ensure gear
The edge connection formula gear oil pump pump housing of oil pump reliability and the performance under high pressure operating mode.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：The connection formula gear oil pump pump housing is inlayed, the pump housing
Rear end is integrally formed with bonnet, and the pump housing is interior to have the gear peace in 8-shaped for being used for installing driving gear and driven gear
Hole is filled, the pinion mounting holes extend towards the direction of the bonnet from the front end face of the pump housing, also had in the pump housing
The bearing of trend identical driving gear shaft mounting hole and driven gear shaft mounting hole of bearing of trend and the pinion mounting holes, institute
Driving gear shaft mounting hole and driven gear shaft mounting hole site are stated between the pinion mounting holes and bonnet, the driving gear
The connection corresponding with the position for installing driving gear of the pinion mounting holes of axle mounting hole, the driven gear shaft mounting hole
With the corresponding connection in position for being used to install driven gear of the pinion mounting holes, the front end face of the pump housing also with it is described
The integrally formed circle boss protruded forward of the pump housing, the boss is located at the periphery of the pinion mounting holes.
Further, the upside outer wall and downside outer wall of the rear end of the pump housing have rectangular channel.
Beneficial effects of the present invention are：
1. the present invention is integrally formed with bonnet, applied in gear oil pump, of the invention be connected with protecgulum may make up pump case,
So as to become the three stage structure of conventional gears oil pump into two-period form structure, axial dimension is shortened, installation and dismounting is simplified, subtracts
The small overall cumulative errors of product, improve the installation accuracy of each part, improve the reliability of gear oil pump.
2. when the present invention is connected with protecgulum, the boss with the front end face of the present invention is set in the connection end end face of protecgulum
Boss, is then caught in the neck by the neck being engaged, and to realize that the present invention and the edge of protecgulum join, this mounting means is reduced
The quantity of dowel hole, reduces influence of the various errors of process to positioning datum；Furthermore, in high pressure and with vibration
Under the operating mode of frequency, the intensity of positioning datum is added, it is to avoid destruction of the shearing force to positioning datum, improve gear oil pump
Overall rigidity and safety coefficient, and assembling speed and quality can be improved.
3. integrally formed bonnet, meets DFMA thoughts, fastener quantity can be reduced, bonnet can both be directly integrated various
Control valve, can be directly integrated the unloading valve with load-transducing and magnet control again, and integration is strong, greatly reduces product
Design, manufacture and assembly cost, shorten product manufacturing cycle time.
5. the design of rectangular channel of the present invention, can mitigate pump housing weight, while using both sides rectangular channel clamped one time, you can complete
Into pump housing processing, clamping force, also without influence, overcomes the shortcoming of the above-mentioned conventional pump housing to pump body structure, easy to setup, remove
Fortune, parts dismounting and the processing of batch flexiblesystem.
6. the present invention can make the amount operating pressure of gear oil pump reach 28MPa, maximum pressure 31.5MPa, volumetric efficiency
>=92%, the excellent performance with time service when meeting long at 100 DEG C~120 DEG C of working media temperature.
To sum up, the present invention enormously simplify main frame and the installing mechanism of gear oil pump designed, and gear oil pump can be made to have knot
Structure is compact, operating pressure is high, noise is low, long lifespan, the advantages of have a wide range of application, and it is empty to greatly reduce the installation of gear oil pump
Between, amount of parts is reduced, assembling speed and quality is improved, and add the overall rigidity of gear oil pump, reduce
The axial dimension of gear oil pump, improve operating pressure and mechanical efficiency, improve high-temperature behavior, reduce gear oil pump startup
Moment of torsion, reduces production cost, increases economic efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the existing gear oil pump pump housing.
Fig. 2 is the front view of one embodiment of the invention.
Fig. 3 is the full sectional view of one embodiment of the invention.
Fig. 4 is Fig. 2 left view.
Fig. 5 is Fig. 2 top view.
Fig. 6 is the use state figure of one embodiment of the invention.
In accompanying drawing the mark of each part for：1 pump housing, 11 bonnets, 12 pinion mounting holes, 13 driving gear shaft mounting holes, 14
Driven gear shaft mounting hole, 15 boss, 16 rectangular channels, 21 driving gears, 22 driven gears, 31 driving gear shafts, 32 driven tooths
Wheel shaft, 4 protecgulums, 41 necks.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5.
The edge connection formula gear oil pump pump housing of one embodiment of the invention, the rear end of the pump housing 1 is integrally formed with bonnet 11, the pump housing 1
It is made of RuT340 materials, there is the gear peace in 8-shaped for being used for installing driving gear and driven gear in the pump housing 1
Hole 12 is filled, the pinion mounting holes 12 extend from the front end face of the pump housing 1 towards the direction of the bonnet 11, the pump housing 1
Inside also there is the bearing of trend identical driving gear shaft mounting hole 13 and driven tooth of bearing of trend and the pinion mounting holes 12
Wheel shaft mounting hole 14, the driving gear shaft mounting hole 13 and driven gear shaft mounting hole 14 are located at the He of pinion mounting holes 12
Between bonnet 11, the position pair for being used to install driving gear of the driving gear shaft mounting hole 13 and the pinion mounting holes 12
It should connect, the driven gear shaft mounting hole 14 is corresponding with the position for installing driven gear of the pinion mounting holes 12 to be connected
Logical, the front end face of the pump housing 1 also has and the integrally formed circle boss 15 protruded forward of the pump housing 1, the boss
15 be in kidney ellipsoid, and the boss 15 is located at the periphery of the pinion mounting holes 12.
The upside outer wall and downside outer wall of the rear end of the pump housing 1 have rectangular channel 16.
General, the pinion mounting holes 12 are vertically in the pump housing 1, and the top of the pinion mounting holes 12 is used to install
Driving gear, bottom are used to install driven gear, and the corresponding driving gear shaft mounting hole 13 is installed positioned at driven gear shaft
The top in hole 14.
Referring to Fig. 6, the edge connection formula gear oil pump pump housing of one embodiment of the invention is applied to the installation process of gear oil pump：
Driving gear 21, driven gear 22, driving gear shaft 31 and driven gear shaft 32 are first installed on to the corresponding mounting hole in the pump housing 1
In, then the boss 15 of the present invention is caught in the neck 41 being engaged with boss 15 of the connection end end face located at protecgulum 4, and
Driving gear shaft 31 is made to be stretched out from the through hole located at protecgulum 4.
The present invention (is coordinated) with the edge of protecgulum 4 connection by boss 15 between boss 15 and the neck 41 being engaged using small―gap suture,
This mounting means reduces the quantity of dowel hole, reduces influence of the various errors of process to positioning datum；Furthermore,
Under high pressure and operating mode with vibration frequency, add the intensity of positioning datum, it is to avoid shearing force is broken to positioning datum
It is bad, gear oil pump overall rigidity and safety coefficient are improved, and assembling speed and quality can be improved.
Integrally formed bonnet 11, while facilitating parts machining clamping with carrying, moreover it is possible to passing through a little processing
Afterwards, 180 degree is rotated vertically, then radially after 180 degree rotation, without gusset piece, composition duplex-gear can be used as the rear pump housing
Take turns oil pump；Furthermore, the present invention is applied in gear oil pump, and the present invention is connected with protecgulum 4 may make up pump case, so as to become conventional tooth
The three stage structure for taking turns oil pump is two-period form structure, shortens axial dimension, simplifies installation and dismounting, reduces the whole of product
Body cumulative errors, improve the installation accuracy of each part, improve the reliability of gear oil pump；The pump housing 1 and bonnet 11 of the present invention
It is integrally formed, meets DFMA thoughts, the i.e. product design in face of manufacturing and assembling and (simplify and facilitate product parts to manufacture and assemble
Design), its core concept is to simplify product by reducing independent number of parts, the present invention itself just reduce one solely
The bonnet of vertical form, so as to reduce multiple fastener quantity, without design control valve built in a variety of bands or unloading valve it is special after
Lid, cross-reference that can directly between other series of products, bonnet 11 can both be directly integrated various control valves, again can be direct
The integrated unloading valve with load-transducing and magnet control, integration is strong, meets zero towards the gear oil pump of assembling manufacturing
Part design theory, meets the design concept of the batch production processing of flexible manufacturing system, greatly reduces design, the manufacture of product
And assembly cost, shorten product manufacturing cycle time.
The manufacturing procedure of the present invention is concentrated, it is only necessary to which clamped one time is processed, and the overall cumulative errors on product influence smaller, tooth
When taking turns operation of oil pump, radial load is more uniform to the impetus of pump bearing, and radial load is to gear when can effectively prevent high pressure
The influence of oil pump internal structure, improves its operating pressure mechanical efficiency and high-temperature behavior, meets gear oil pump in high pressure operating mode
Under performance requirement, and the design of the present invention edge connection formula gear oil pump pump housing causes overall moment of friction to diminish, and subtracts
The small starting torque of gear oil pump.
The gear oil pump pump housing uses cast iron materials more because considering the bearing capacity of pump housing during high pressure, and maximum shortcoming is weight
Amount weight.The pump housing appearance profile of conventional design is more regular and round and smooth without easy craft or mechanical handing, is less susceptible to carry out zero
The secondary dismounting of part；The conventional pump housing uses mounting hole or dowel hole installs positioning, and needs multiple clamping, and clamping force is directly acted on
In the mounting hole or dowel hole of the pump housing, the shape and position feature in hole are influenceed.The design of rectangular channel 16, can mitigate pump housing weight
Amount, while using the clamped one time of both sides rectangular channel 16, you can complete the pump housing 1 and process, clamping force is to the internal structure of the pump housing 1 also without shadow
Ring, overcome the shortcoming of the conventional pump housing, easy to setup, carrying, parts dismounting and the processing of batch flexiblesystem.
It is one embodiment of the present invention above.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the principles of the invention, various modifications and improvements can be made.
Claims (2)
1. inlay the connection formula gear oil pump pump housing, it is characterised in that：The rear end of the pump housing (1) is integrally formed with bonnet (11), the pump housing
(1) there are the pinion mounting holes (12) in 8-shaped for being used for installing driving gear and driven gear, the pinion mounting holes in
(12) extend from the front end face of the pump housing (1) towards the direction of the bonnet (11), also there is extension side in the pump housing (1)
To the bearing of trend identical driving gear shaft mounting hole (13) and driven gear shaft mounting hole with the pinion mounting holes (12)
(14), the driving gear shaft mounting hole (13) and driven gear shaft mounting hole (14) be located at the pinion mounting holes (12) and after
Cover between (11), the driving gear shaft mounting hole (13) and the portion for being used to install driving gear of the pinion mounting holes (12)
Position correspondence connection, the driven gear shaft mounting hole (14) and the portion for being used to install driven gear of the pinion mounting holes (12)
Position correspondence connection, the front end face of the pump housing (1) also has and the integrally formed circle boss protruded forward of the pump housing (1)
(15), the boss (15) is in kidney ellipsoid, and the boss (15) is located at the periphery of the pinion mounting holes (12).
2. the connection formula gear oil pump pump housing is inlayed as claimed in claim 1, it is characterised in that：The upside of the rear end of the pump housing (1)
Outer wall and downside outer wall have rectangular channel (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260283.8A CN104819152B (en) | 2015-05-20 | 2015-05-20 | Inlay the connection formula gear oil pump pump housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260283.8A CN104819152B (en) | 2015-05-20 | 2015-05-20 | Inlay the connection formula gear oil pump pump housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104819152A CN104819152A (en) | 2015-08-05 |
| CN104819152B true CN104819152B (en) | 2017-09-15 |
Family
ID=53729576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510260283.8A Active CN104819152B (en) | 2015-05-20 | 2015-05-20 | Inlay the connection formula gear oil pump pump housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104819152B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098960A (en) * | 2018-07-31 | 2018-12-28 | 合肥集源穗意液压技术股份有限公司 | A kind of pump body structure improving stock utilization, light weight |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540239A (en) * | 1978-09-12 | 1980-03-21 | Nippon Air Brake Co Ltd | Gear pump or motor |
| DE3112470A1 (en) * | 1981-03-28 | 1982-10-07 | Robert Bosch Gmbh, 7000 Stuttgart | GEAR MACHINE (PUMP OR MOTOR) |
| JP3613820B2 (en) * | 1994-10-31 | 2005-01-26 | 株式会社島津製作所 | Gear pump or motor |
| JP2001336483A (en) * | 2000-05-29 | 2001-12-07 | Shin Meiwa Ind Co Ltd | Gear pump or gear motor |
| CN2758528Y (en) * | 2004-08-18 | 2006-02-15 | 任光宪 | Unload type non-leakage high pressure, medium pressure gear pump |
| CN201053393Y (en) * | 2007-06-05 | 2008-04-30 | 青州市金星工程机械液压件厂 | Gear pump for improving side plate compensation structure |
| CN101216032A (en) * | 2008-01-10 | 2008-07-09 | 肖有恒 | Axle sleeve-free gear oil pump |
| CN201396273Y (en) * | 2009-04-22 | 2010-02-03 | 徐州科源液压有限公司 | Novel ultra-high pressure gear oil pump |
| CN203130493U (en) * | 2013-03-13 | 2013-08-14 | 无锡英特帕普威孚液压有限责任公司 | High-pressure bilateral rotation gear pump |
| CN203404068U (en) * | 2013-05-17 | 2014-01-22 | 山东华伟液压设备制造有限公司 | Hydraulic gear pump |
| CN204646657U (en) * | 2015-05-20 | 2015-09-16 | 合肥长源液压股份有限公司 | The edge connection formula gear oil pump pump housing |
-
2015
- 2015-05-20 CN CN201510260283.8A patent/CN104819152B/en active Active
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| Publication number | Publication date |
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| CN104819152A (en) | 2015-08-05 |
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