CN104819151B - It is provided with edge duplex pump body and the gear oil pump with damping hole side plate - Google Patents
It is provided with edge duplex pump body and the gear oil pump with damping hole side plate Download PDFInfo
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- CN104819151B CN104819151B CN201510259909.3A CN201510259909A CN104819151B CN 104819151 B CN104819151 B CN 104819151B CN 201510259909 A CN201510259909 A CN 201510259909A CN 104819151 B CN104819151 B CN 104819151B
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Abstract
Edge duplex pump body and the gear oil pump with damping hole side plate, including protecgulum, driving gear, driven gear, driving gear shaft and driven gear shaft are provided with, also including edge duplex pump body and two band damping hole side plates；Edge duplex pump body, integrally formed with bonnet, the front end face of the pump housing also has a circle boss prominent forward integrally formed with the pump housing for the rear end of the pump housing；Band damping hole side plate, is additionally provided with the damping hole of side plate described in two insertions on the side plate；The rear end face of the protecgulum is provided with the draw-in groove being engaged with the boss of the edge duplex pump body, the protecgulum and the edge duplex pump body realize edge connection by the male-female engagement of boss and draw-in groove, and described two band damping hole side plates are sheathed on the driving gear shaft and driven gear shaft.The present invention has the advantages that mounting structure is simple, installation accuracy is high, ensure that gear oil pump reliability and the performance under high pressure operating mode.
Description
Technical field
The present invention relates to gear oil pump field, relate in particular to a kind of being provided with and inlay duplex pump body and with damping hole side plate
Gear oil pump.
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 structure, and small volume is lightweight, and self-suction is strong, to oil contamination
The characteristic such as insensitive, high pressure gear oil pump is widely used in technical field of hydraulic pressure particularly construction machinery industry.
By structure is limited, there are the following problems in actual applications for existing 32mL/r~80mL/r high pressure gear oil pumps：
1) as shown in figure 1, the driving gear 902 of the gear oil pump of Current Domestic middle high-pressure, driven gear 903 are multiplex
The tooth of 4.5 (5.5) modulus 10,20 ° of pressure angle, meets existing GB/T1356-1988《Involute cylindrical gear datum tooth
Shape》The gear of standard.When the timing of centre-to-centre spacing one, modulus are big, the number of teeth is few, and contact ratio when gear is engaged is smaller, and stationarity is poor,
Noise is big, and gear oil pump easily makes hydraulic pressure heating of oil in the course of the work, and volumetric efficiency is low, and service life is short；
2) it is only less by diameter as shown in figure 1, high pressure gear oil pump is generally the pump housing mostly single plane structure at this stage
Alignment pin or roll pin realize positioning action, in alignment error, mismachining tolerance, high pressure, high speed and certain vibration frequently
Under the bad working environments such as rate, excessive shearing force easily causes the failure of alignment pin, so as to the failure for causing gear oil pump too early；
3) as shown in figure 1, protecgulum 901 at this stage in high pressure gear oil pump existing structure, the pump housing 904 and bonnet 905 are
Three stage structure, the pump housing disperses with the technique of bonnet, and existing level of processing is difficult while ensureing the size essence of each member mounting holes
Degree.Meanwhile, the dispersion of operation, the multiple clamping processing of parts causes the overall cumulative errors of product larger, causes pump bearing
Radial load increase, overall moment of friction is increased, and seal assembly difficulty is larger, and the starting that increased gear oil pump is turned round
Square, it is especially pronounced in high-pressure gear pump；
4) pump housing in existing structure is generally single plane symmetrical structure, produce and process engineering in exist be difficult carry,
Clamping is difficult, the shortcomings of easily being collided with circular flow, the gear oil pump design concept towards assembling manufacturing is not met, also not met
The batch production processing of flexible manufacturing system；
5) in existing middle high-pressure gear oil-pump structure, to ensure volumetric efficiency, reduce face leakage and leaked with tooth top,
Coordinated using small―gap suture, under gear oil pump high pressure operating mode, it is ensured that volumetric efficiency high is simultaneously, it is impossible to ensure lubricating oil film in gap
Be effectively formed and keep for a long time, gear oil pump easily generates heat, and causes the initial failure of gear oil pump.
The content of the invention
The technical problems to be solved by the invention are to provide that a kind of mounting structure is simple, installation accuracy is high, ensure that tooth
Wheel oil pump reliability and being provided with for the performance under high pressure operating mode inlay duplex pump body and the gear oil pump with damping hole side plate.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：It is provided with edge duplex pump body and band damping hole
The gear oil pump of side plate, including protecgulum, driving gear, driven gear, driving gear shaft and driven gear shaft, also including edge connection formula
The pump housing and two band damping hole side plates；
Edge duplex pump body, the rear end of the pump housing have integrally formed with bonnet, in the pump housing for install driving gear and
The pinion mounting holes in 8-shaped of driven gear, the pinion mounting holes are from the front end face of the pump housing towards the bonnet
Direction extends, and also there is bearing of trend to pacify with the bearing of trend identical driving gear shaft of the pinion mounting holes in the pump housing
Dress hole and driven gear shaft mounting hole, the driving gear shaft mounting hole and driven gear shaft mounting hole site are installed in the gear
Between hole and bonnet, the driving gear shaft mounting hole is corresponding for installing the position of driving gear with the pinion mounting holes
Connection, for installing, the position of driven gear is corresponding to be connected the driven gear shaft mounting hole with the pinion mounting holes, institute
Stating the front end face of the pump housing also has a circle boss prominent forward integrally formed with the pump housing, and the boss is located at the tooth
Take turns the periphery of mounting hole；
Band damping hole side plate, side plate is in 8-shaped, is used for by the gear of gear oil pump with forming two at the two ends of side plate
The circular hole of axle, be defined through two straight lines in the center of circle of circular hole of the side plate for Y-axis, by two circular holes of the side plate
The midpoint of circle center line connecting and perpendicular to Y-axis straight line be X-axis, the back side of the side plate is provided with the seal groove of ω shapes, described close
Two circular holes that seal groove is located at the side plate are peripheral and the seal groove is symmetrical by symmetry axis of X-axis, described close
The back side of the side plate is divided into higher-pressure region and low-pressure area, wherein higher-pressure region to be located at the chimb of the seal groove by seal groove
Side, low-pressure area is located at the concave edge side of the seal groove, and the back side of the side plate is along the two ends of Y direction respectively accordingly justifying
The center of circle in hole is that summit, central angle form sub-high pressure area for the sector of β is interval, it is described it is fan-shaped it is interval with Y-axis be symmetrical axial symmetry
Distribution, the two ends of the seal groove pass the higher-pressure region twice respectively, and the two ends of the seal groove extend to institute
The outer peripheral face of side plate is stated, the damping hole of side plate described in two insertions is additionally provided with the side plate, the damping hole is located at described time
The part for passing the sub-high pressure area of higher-pressure region and the seal groove surrounds interval；
The rear end face of the protecgulum is provided with the draw-in groove that is engaged of boss with the edge duplex pump body, the protecgulum and described
Edge duplex pump body realizes edge connection by the male-female engagement of boss and draw-in groove, and the driving gear and driven gear are installed on the edge
In the pinion mounting holes of duplex pump body, the rear end of the driving gear shaft is installed on the driving gear shaft peace of the edge duplex pump body
Fill in hole, the protecgulum is stretched out in front end, the rear end of the driven gear shaft is installed on the driven gear shaft of the edge duplex pump body
Mounting hole is interior, front end is installed in the axis hole of the protecgulum, and described two band damping hole side plates are sheathed on the driving tooth
On wheel shaft and driven gear shaft, and described two fronts with damping hole side plate fit in the driving gear and driven respectively
The both ends of the surface of gear.
Further, the upside outer wall and downside outer wall of the rear end of the pump housing have rectangular channel.
Further, the ratio of the Kong Changyu diameters of the damping hole is more than 4.
Further, the higher-pressure region at the back side of the side plate is provided with two higher-pressure regions and draws oil groove, and described two higher-pressure regions are drawn
Oil groove is symmetrical by symmetry axis of X-axis, and described two higher-pressure regions draw oil groove one end connected with the seal groove, it is another
One end extends to the outer peripheral face of the side plate.
Further, the front of the side plate is respectively equipped with a circle groove in the orifice edge of described two circular holes, described
The front of side plate is additionally provided with low-pressure area and draws oil groove, and it is between described two circular holes and described low that the low-pressure area draws oil groove
The two ends that nip draws oil groove respectively lead to two groove.
Beneficial effects of the present invention are：
1. the present invention may make up pump case by inlaying duplex pump body with the connection of protecgulum, so as to become the three of conventional gears oil pump
Segmentation structure is two-period form structure, shortens axial dimension, simplifies installation and dismounting, and the entirety for reducing product adds up to miss
Difference, improves the installation accuracy of each part, improves the reliability of gear oil pump, and inlays and pass through between duplex pump body and protecgulum
The male-female engagement of boss and draw-in groove realizes edge connection, and this mounting means reduces the quantity of dowel hole, reduces process
Influence of the various errors to positioning datum；Furthermore, under the operating mode in high pressure and with vibration frequency, increased the strong of positioning datum
Degree, it is to avoid destruction of the shearing force to positioning datum, improves gear oil pump overall rigidity and safety coefficient, and can carry
Assembling speed high and quality.
2. the characteristic of the damping hole for being set on side plate of the present invention is changed according to the change of oil temperature, and gear oil pump is in high pressure
During work, damping hole by sub-high pressure oil introduce side plate the back side so that the back side of side plate gross thrust (seal elastic thrust and
Hydraulic thrust) it is bigger than the positive hydraulic thrust of side plate, the sub-high pressure oil that damping hole is introduced is with change in pressure so that
The overall dynamic balancing of side plate is more preferable, thus on the more efficient end face for fitting to gear for more balancing of side plate energy, it is ensured that gear
The efficient output of oil pump, is greatly reduced the decrement of seal, substantially reduces the starting torque of gear oil pump, obtains higher
Mechanical efficiency.
3. 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 conventional pump housing, easy to setup, carrying, zero to pump body structure
Part dismantles the processing with batch flexiblesystem.
4. the mutual cooperation that the higher-pressure region for being set on side plate of the present invention is drawn between oil groove and damping hole can effectively improve side
The friction pair of plate and gear；And the compensation of the more hydraulic coupling of dynamic equalization is obtained at sub-high pressure area by damping hole, is made
The thrust ratio routine side plate at the back side of side plate is more balanced, in the case where sealing is ensured, can greatly reduce the pressure of seal
Contracting amount, significantly lifts the gap that gear oil pump is axially engaged, and reduces the starting torque of gear oil pump, lifting product volume effect
Rate, improves carrying and the impact resistance of gear oil pump.
To sum up, the present invention is with mounting structure is simple, installation accuracy is high, ensure that gear oil pump reliability and in high pressure
The advantage of the performance under operating mode.
Brief description of the drawings
Fig. 1 is the structural representation of existing gear oil pump.
Fig. 2 is the structural representation of one embodiment of the invention.
Fig. 3 is the structural representation of the edge duplex pump body in one embodiment of the invention.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the top view of Fig. 3.
Fig. 6 is the structure schematic diagram with damping hole side plate in one embodiment of the invention.
Fig. 7 is the positive structure schematic with damping hole side plate in one embodiment of the invention.
Fig. 8 is the A-A sectional views of Fig. 6.
Fig. 9 is enlarged drawing at the I of Fig. 6.
Figure 10 is enlarged drawing at the II of Fig. 8.
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, 2 protecgulums, 21 draw-in grooves, 3 driving gears, 4 driven gears, 31 driving gears
Axle, 41 driven gear shafts, 5 side plates, 51 circular holes, 52 seal grooves, 53 higher-pressure regions, 54 low-pressure areas, 55 sub-high pressure areas, 56 dampings
Hole, 57 higher-pressure regions are drawn oil groove, 58 grooves, 59 low-pressure areas and draw oil groove.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Referring to Fig. 2, duplex pump body and the gear oil pump with damping hole side plate are inlayed in being provided with for one embodiment of the invention, including preceding
Lid 2, driving gear 3, driven gear 4, driving gear shaft 31, driven gear shaft 41, edge duplex pump body and two band damping hole sides
Plate；
Edge duplex pump body, referring to Fig. 3, Fig. 4 and Fig. 5, integrally formed with bonnet 11, the pump housing 1 is used for the rear end of the pump housing 1
RuT340 materials are made, and have in the pump housing 1 and are installed for installing the gear in 8-shaped of driving gear 3 and driven gear 4
Hole 12, the pinion mounting holes 12 extend from the front end face of the pump housing 1 towards the direction of the bonnet 11, in the pump housing 1
Also there is the bearing of trend identical driving gear shaft mounting hole 13 and driven gear of bearing of trend and the pinion mounting holes 12
Axle mounting hole 14, the driving gear shaft mounting hole 13 and driven gear shaft mounting hole 14 are located at the pinion mounting holes 12 with after
Between lid 11, the position pair for installing driving gear 3 of the driving gear shaft mounting hole 13 and the pinion mounting holes 12
Should connect, the driven gear shaft mounting hole 14 is corresponding for installing the position of driven gear 4 with the pinion mounting holes 12
Connection, the front end face of the pump housing 1 also has a circle boss 15 prominent forward integrally formed with the pump housing 1, described convex
Platform 15 is in kidney ellipsoid, and the boss 15 is located at the periphery of the pinion mounting holes 12；
General, vertically in the pump housing 1, the top of the pinion mounting holes 12 is used to install the pinion mounting holes 12
Driving gear 3, bottom is used to install driven gear 4, and the corresponding driving gear shaft mounting hole 13 is pacified positioned at driven gear shaft
Fill the top in hole 14；
Band damping hole side plate, referring to Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10, side plate 5 is in 8-shaped, with the two ends shape of side plate 5
Into two circular holes 51 being used for by the gear shaft of gear oil pump, two centers of circle of circular hole 51 of the side plate 5 are defined through
Straight line is Y-axis, and two midpoints of the circle center line connecting of circular hole 51 by the side plate 5 and the straight line perpendicular to Y-axis are X-axis, institute
The back side for stating side plate 5 is provided with the seal groove 52 of ω shapes, and the seal groove 52 is located at the periphery of two circular holes 51 of the side plate 5
And the seal groove 52 is symmetrical by symmetry axis of X-axis, be divided at the back side of the side plate 5 by the seal groove 52
Higher-pressure region 53 and low-pressure area 54, wherein higher-pressure region 53 are located at the chimb side of the seal groove 52, and low-pressure area 54 is located at described close
The concave edge side of seal groove 52, the back side of the side plate 5 is being respectively to push up with the center of circle of corresponding circle hole 51 along the two ends of Y direction
Point, central angle form sub-high pressure area 55 for the sector of β is interval, described fan-shaped interval symmetrical by symmetry axis of Y-axis, described close
The two ends of seal groove 52 pass higher-pressure region 55 twice respectively, and the two ends of the seal groove 52 extend to the side plate
5 outer peripheral face, is additionally provided with the damping hole 56 of side plate 5 described in two insertions on the side plate 5, the damping hole 56 is located at described time
The part for passing the sub-high pressure area 55 of higher-pressure region 55 and the seal groove 52 surrounds interval；
The rear end face of the protecgulum 2 is provided with the draw-in groove 21 being engaged with the boss 15 of the edge duplex pump body, the protecgulum 2
Edge connection, the driving gear 3 and driven gear 4 are realized by the male-female engagement of boss 15 and draw-in groove 21 with the edge duplex pump body
It is installed in the pinion mounting holes 12 of the edge duplex pump body, the rear end of the driving gear shaft 31 is installed on the edge duplex pump
The driving gear shaft mounting hole 13 of body is interior, the protecgulum 2 is stretched out in front end, and the rear end of the driven gear shaft 41 is installed on the edge
The driven gear shaft mounting hole 14 of duplex pump body is interior, front end is installed in the axis hole of the protecgulum 2, described two band dampings
Hole side plate is sheathed on the driving gear shaft 31 and driven gear shaft 41, and described two fronts with damping hole side plate point
The both ends of the surface of the driving gear 3 and driven gear 4 are not fitted in, and described two band damping hole side plates are located at pinion mounting holes 12
It is interior.In specific implementation, bearing set is matched somebody with somebody with realizing rotation between the two between the driving gear shaft 31 and the protecgulum 2
Close, and be set with oil sealing and realize oil sealing, Du bushings are set with the driving gear shaft 31 and driven gear shaft 41.
The upside outer wall and downside outer wall of the rear end of the pump housing 1 have rectangular channel 16.The high pressure gear oil pump pump housing
Cast iron materials are used because considering the bearing capacity of pump housing during high pressure, maximum shortcoming is weight weight more.The pump housing of conventional design
Appearance profile is more regular and round and smooth without easy craft or mechanical handing, is less susceptible to carry out the secondary dismounting of parts；Conventional pumps
The multiplex mounting hole of body or dowel hole install positioning, and need multiple clamping, and clamping force directly acts on the mounting hole of the pump housing or fixed
Position pin-and-hole, influences the shape and position feature in hole.The design of rectangular channel 16, can mitigate pump housing weight, while using both sides rectangle
The clamped one time of groove 16, you can complete the pump housing 1 and process, clamping force, also without influence, overcomes above-mentioned conventional pumps to the internal structure of the pump housing 1
The shortcoming of body, easy to setup, carrying, parts dismounting and the processing of batch flexiblesystem.
The ratio of the Kong Changyu diameters of the damping hole 56 is more than 4.Using this ratio, to form elongated hole, and process
More convenient, the flow for flowing through damping hole 56 is directly proportional to the pressure difference before and after damping hole 56, and is influenceed by oil temperature.There is flow to pass through
When, damping hole 56 increased the damping (power) of runner so that hole both sides formed pressure differential, and cause rate of flow of fluid drastically change and
Liquid stream generally laminar condition when gently getting off, and flowing through elongated hole, therefore improve the stability of the work of side plate 5.
The higher-pressure region 53 at the back side of the side plate 5 is provided with two higher-pressure regions and draws oil groove 57, and oil groove is drawn in described two higher-pressure regions
57 is symmetrical by symmetry axis of X-axis, and described two higher-pressure regions draw oil groove 57 one end connected with the seal groove 52,
The other end extends to the outer peripheral face of the side plate 5.
The front of the side plate 5 is respectively equipped with a circle groove 58, the side plate in the orifice edge of described two circular holes 51
Front 5 be additionally provided with low-pressure area and draw oil groove 59, it is between described two circular holes 51 and described that the low-pressure area draws oil groove 59
The two ends that low-pressure area draws oil groove 59 respectively lead to two groove 58.
The side plate 5 is used and answered by the double-metal layer of bronze alloy material and carbon structural steels Q235A Material claddings
Plywood is made, and the back side of the side plate 5 is located at using the one side of carbon structural steels Q235A materials.This material can send out this
There is good corrosion resistance, wearability, thermal diffusivity, machinability and less volume contraction with damping hole side plate in bright
Rate, it is ensured that the present invention in damping hole side plate in high pressure with good heat dispersion, have compressive resistance higher again.
General, the central angle β for forming the sector interval in sub-high pressure area 55 is not limit accurately, can be by calculating
, the operating mode that gear oil pump is used is different, and β angles are different, threshold values≤60 ° of β in the present invention.
When the present invention is used under rated pressure 28MPa, the implementation operating mode of maximum pressure 31.5MPa, the aperture of damping hole 56
Size is 1.5mm, and the distance in the center of circle away from neighbouring circular hole 51 is the center of circle of 27.5mm, the center of circle of damping hole 56 and neighbouring circular hole 51
Angle between line and Y-axis is 43.5 degree.
The gear teeth parameter of the driving gear 3 and driven gear 4 is：20 ° of pressure angle, centre-to-centre spacing 50.8mm, modulus 3.88,
The number of teeth 13.While tooth bending fatigue strength is ensured, reduce module, increase the number of teeth, reduce the flow of gear pump
Pulsation, increased registration when gear is engaged, and improve transmission stability, reduce further the noise of gear oil pump, subtract
Lack fluid heating, improved the abrasion condition of the gear teeth, extended the service life of gear, improve volumetric efficiency.Height of the invention
In pressure gear oil pump, the modulus and the number of teeth of rational selection gear, are to reduce radial load and improve gear axle journal and bushing (axle
Hold) one of the bearing capacity measure most easily implemented, bushing load reduces by 30%, nearly 8 times of life longer.
Between driving gear shaft of the present invention 31 and driven gear shaft 41 and Du bushings, driving gear 3 and driven gear 4 and tooth
Wheel mounting hole 12 between, between the outer peripheral face of side plate 5 and the inwall of the pump housing 1 radial clearance using wide arc gap coordinate, it is unilateral between
The more conventional middle high-pressure gear pump gap value of gap value improves 100%~150%, to ensure gear oil pump under high pressure operating mode,
Ensure volumetric efficiency high simultaneously, lubricating oil film being effectively formed and keeps for a long time in above-mentioned gap, beneficial to gear oil pump heat
Circulate and distribute, reduce the starting torque of gear oil pump, improve volumetric efficiency and the life-span of gear oil pump, more meet energy-saving ring
The design concept of guarantor.
The present invention inlays connection (coordinating using small―gap suture between boss 15 and the draw-in groove 21 being engaged) by boss 15 and protecgulum 2,
This mounting means reduces the quantity of dowel hole, reduces influence of the various errors of process to positioning datum；Furthermore,
Under operating mode in high pressure and with vibration frequency, increased 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 improve, and assembling speed and quality can be improved.
Integrally formed bonnet 11, while facilitating parts machining clamping with carrying, moreover it is possible to by a little processing
Afterwards, 180 degree rotation vertically, then radially after 180 degree rotation, without gusset piece, composition duplex-gear can be used as the rear pump housing
Wheel oil pump；Furthermore, the present invention may make up pump case by inlaying duplex pump body with the connection of protecgulum 2, so as to become conventional gears oil pump
Three stage structure be two-period form structure, shorten axial dimension, simplify installation with dismounting, reduce product entirety add up
Error, improves the installation accuracy of each part, improves the reliability of gear oil pump；The pump housing of the present invention 1 and the one of bonnet 11 into
Type, meets DFMA thoughts, i.e. the product design in face of manufacturing and assembling (simplifies and facilitate that product parts are manufactured and assembling sets
Meter), its core concept is to simplify product by reducing independent number of parts, and the present invention itself just reduces an independent shape
The bonnet of formula, so that multiple fastener quantity are reduced, without designing various special bonnets with built-in control valve or unloading valve, can
Directly with the cross-reference between other series of products, bonnet 11 can both be directly integrated various control valves, can be directly integrated again
Unloading valve with load-transducing and magnet control, integration is strong, meets the parts towards the gear oil pump of assembling manufacturing
Design concept, meets the design concept of the batch production processing of flexible manufacturing system, greatly reduces design, manufacture and the dress of product
With cost, shorten product manufacturing cycle time.
Manufacturing procedure of the invention is concentrated, it is only necessary to which clamped one time is processed, and the overall cumulative errors on product influence smaller, tooth
During wheel 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 present invention edge duplex pump body causes that overall moment of friction diminishes, and reduces gear
The starting torque of oil pump.
The characteristic of damping hole 56 of the present invention with being set on damping hole side plate is changed according to the change of oil temperature, gear oil
In high-pressure work, oil temperature is uprised pump, viscosity, and the flow of damping hole 56 just becomes big, and damping hole 56 introduces sub-high pressure oil
The back side of side plate 5 so that the gross thrust (seal elastic thrust and hydraulic thrust) at the back side of side plate 5 is more positive than side plate 5
Hydraulic thrust is big, and the sub-high pressure oil that damping hole 56 is introduced is with change in pressure so that the dynamic balancing of the entirety of side plate 5 is more
It is good, thus on the more efficient end face for fitting to gear for more balancing of the energy of side plate 5, it is ensured that the efficient output of gear oil pump, greatly
Amplitude reduces the decrement of seal, substantially reduces the starting torque of gear oil pump, obtains mechanical efficiency higher.
The present invention draws the mutual cooperation between oil groove 57 and damping hole 56 in the higher-pressure region with being set on damping hole side plate can be had
The friction pair for improving side plate 5 and gear of effect.When gear oil pump works, sub-high pressure area 55 is cylindrical with the side plate 5 of the side of low-pressure area 54
Spoke is fitted with the inwall of the pump housing 1, can be taken away the heat produced at this by the fluid of damping hole 56, reduces side plate 5 and the pump housing 1
The excessive heat energy that inwall is produced when fitting；The more hydraulic coupling of dynamic equalization is obtained at sub-high pressure area 55 by damping hole 56
Compensation, makes the thrust ratio routine side plate at the back side of side plate 5 more balanced, in the case where sealing is ensured, can greatly reduce close
The decrement of sealing, significantly lifts the gap that gear oil pump is axially engaged, and reduces the starting torque of high pressure gear oil pump, carries
Product volumetric efficiency is risen, the carrying as high pressure gear oil pump and impact resistance is improved.
Positive groove 58 and low-pressure area with damping hole side plate of the invention draw oil groove 59 and design, it is possible to use be out of gear
The vacuum formed during engagement realizes the self-priming lubrication of low pressure oil, both improves the bar of (the oil inlet side of gear oil pump) oil film formation
Part, can play good lubrication and cooling effect to side plate 5 and gear face again, reduce the loss of hydraulic oil and improve pump
Volumetric efficiency.
It is above one embodiment of the present invention.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 (5)
1. edge duplex pump body and the gear oil pump with damping hole side plate, including protecgulum (2), driving gear (3), driven gear are provided with
(4), driving gear shaft (31) and driven gear shaft (41), it is characterised in that：Also include edge duplex pump body and two band damping holes
Side plate；
Edge duplex pump body, the rear end of the pump housing (1) has for installing actively integrally formed with bonnet (11) in the pump housing (1)
The pinion mounting holes (12) in 8-shaped of gear (3) and driven gear (4), the pinion mounting holes (12) are from the pump housing (1)
Front end face extend towards the direction of the bonnet (11), also there is in the pump housing (1) bearing of trend to be installed with the gear
Bearing of trend identical driving gear shaft mounting hole (13) and driven gear shaft mounting hole (14) in hole (12), the driving gear
Axle mounting hole (13) and driven gear shaft mounting hole (14) between the pinion mounting holes (12) and bonnet (11), the master
For installing, the position of driving gear (3) is corresponding to be connected movable gear shaft mounting hole (13) with the pinion mounting holes (12), institute
For installing, the position of driven gear (4) is corresponding to be connected with the pinion mounting holes (12) to state driven gear shaft mounting hole (14)
Logical, the front end face of the pump housing (1) also has circle boss (15) prominent forward integrally formed with the pump housing (1), institute
Boss (15) is stated in kidney ellipsoid, periphery of the boss (15) positioned at the pinion mounting holes (12)；
Band damping hole side plate, side plate (5) is used for by the tooth of gear oil pump in 8-shaped with forming two at the two ends of side plate (5)
The circular hole (51) of wheel shaft, is defined through two straight lines in the center of circle of circular hole (51) of the side plate (5) for Y-axis, by the side
Two midpoints of the circle center line connecting of circular hole (51) of plate (5) and perpendicular to Y-axis straight line be X-axis, the back side of the side plate (5) sets
There is the seal groove (52) of ω shapes, the seal groove (52) is positioned at two circular holes (51) periphery of the side plate (5) and institute
State that seal groove (52) is symmetrical by symmetry axis of X-axis, be divided at the back side of the side plate (5) by the seal groove (52)
Higher-pressure region (53) and low-pressure area (54), wherein higher-pressure region (53) are positioned at the chimb side of the seal groove (52), low-pressure area (54)
Positioned at the concave edge side of the seal groove (52), the back side of the side plate (5) is along the two ends of Y direction respectively with corresponding circle hole
(51) the center of circle is summit, central angle forms sub-high pressure area (55) for the sector of β is interval, and the sector interval is symmetrical with Y-axis
Axial symmetry is distributed, threshold values≤60 ° of β, and the two ends of the seal groove (52) pass higher-pressure region (55) twice respectively, and
The two ends of the seal groove (52) extend to the outer peripheral face of the side plate (5), and two insertion institutes are additionally provided with the side plate (5)
State the damping hole (56) of side plate (5), the damping hole (56) is positioned at the sub-high pressure area (55) and the seal groove (52)
The part for passing the sub-high pressure area (55) surrounds interval, and the side plate (5) is using by bronze alloy material and carbon structure
The double-metal layer composite plate of steel Q235A Material claddings is made, and the back side of the side plate (5) is located at and uses carbon structural steels
The one side of Q235A materials；
The rear end face of the protecgulum (2) is provided with the draw-in groove (21) that is engaged of boss (15) with the edge duplex pump body, it is described before
Lid (2) and the edge duplex pump body realize edge connection, the driving gear (3) by the male-female engagement of boss (15) and draw-in groove (21)
It is installed in the pinion mounting holes (12) of the edge duplex pump body with driven gear (4), the rear end of the driving gear shaft (31)
It is installed in the driving gear shaft mounting hole (13) of the edge duplex pump body, the protecgulum (2), the driven gear are stretched out in front end
The rear end of axle (41) is installed in the driven gear shaft mounting hole (14) of the edge duplex pump body, front end is installed on before described
Cover in the axis hole of (2), described two band damping hole side plates are sheathed on the driving gear shaft (31) and driven gear shaft (41),
And described two fronts with damping hole side plate fit in the both ends of the surface of the driving gear (3) and driven gear (4) respectively.
It is 2. as claimed in claim 1 to be provided with edge duplex pump body and the gear oil pump with damping hole side plate, it is characterised in that：It is described
The upside outer wall and downside outer wall of the rear end of the pump housing (1) have rectangular channel (16).
It is 3. as claimed in claim 1 or 2 to be provided with edge duplex pump body and the gear oil pump with damping hole side plate, it is characterised in that：
The ratio of the Kong Changyu diameters of the damping hole (56) is more than 4.
It is 4. as claimed in claim 1 or 2 to be provided with edge duplex pump body and the gear oil pump with damping hole side plate, it is characterised in that：
The higher-pressure region (53) at the back side of the side plate (5) is provided with two higher-pressure regions and draws oil groove (57), and oil groove is drawn in described two higher-pressure regions
(57) it is symmetrical by symmetry axis of X-axis, and one end of oil groove (57) and the seal groove are drawn in described two higher-pressure regions
(52) connection, the other end extend to the outer peripheral face of the side plate (5).
It is 5. as claimed in claim 1 or 2 to be provided with edge duplex pump body and the gear oil pump with damping hole side plate, it is characterised in that：
The front of the side plate (5) is respectively equipped with a circle groove (58) in the orifice edge of described two circular holes (51), the side plate
Front (5) is additionally provided with low-pressure area and draws oil groove (59), and the low-pressure area draws oil groove (59) between described two circular holes (51), and
And the low-pressure area draws the two ends of oil groove (59) and respectively leads to two groove (58).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259909.3A CN104819151B (en) | 2015-05-20 | 2015-05-20 | It is provided with edge duplex pump body and the gear oil pump with damping hole side plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259909.3A CN104819151B (en) | 2015-05-20 | 2015-05-20 | It is provided with edge duplex pump body and the gear oil pump with damping hole side plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104819151A CN104819151A (en) | 2015-08-05 |
| CN104819151B true CN104819151B (en) | 2017-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510259909.3A Active CN104819151B (en) | 2015-05-20 | 2015-05-20 | It is provided with edge duplex pump body and the gear oil pump with damping hole side plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104819151B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425838B (en) * | 2018-04-13 | 2024-03-19 | 合肥长源液压股份有限公司 | Gear oil pump capable of reducing radial force borne by gear |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55107092A (en) * | 1979-02-06 | 1980-08-16 | Kayaba Ind Co Ltd | Loading device for gear pump |
| 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 |
| CN2440124Y (en) * | 2000-09-11 | 2001-07-25 | 济南液压泵有限责任公司 | Gear pump with two-way axial-sealing compensation device |
| 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 |
| 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 |
| CN202284539U (en) * | 2011-10-31 | 2012-06-27 | 泊姆克(天津)液压有限公司 | Double-axial gap self compensating high pressure gear 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 |
| CN204663875U (en) * | 2015-05-20 | 2015-09-23 | 合肥长源液压股份有限公司 | Be provided with the gear oil pump of edge duplex pump body and band damping hole side plate |
-
2015
- 2015-05-20 CN CN201510259909.3A patent/CN104819151B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104819151A (en) | 2015-08-05 |
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