CN105715532B - A kind of conjuncted hydraulic pump motor of parallel-axis type - Google Patents
A kind of conjuncted hydraulic pump motor of parallel-axis type Download PDFInfo
- Publication number
- CN105715532B CN105715532B CN201610210839.7A CN201610210839A CN105715532B CN 105715532 B CN105715532 B CN 105715532B CN 201610210839 A CN201610210839 A CN 201610210839A CN 105715532 B CN105715532 B CN 105715532B
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- China
- Prior art keywords
- motor
- pump
- shell
- swash plate
- rear cover
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- 238000010276 construction Methods 0.000 claims abstract description 7
- 230000000875 corresponding Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 210000001331 Nose Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003739 Neck Anatomy 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Abstract
The invention belongs to Fluid Transmission and Control technical fields, and in particular to a kind of conjuncted pump motor of hydraulic pressure.A kind of conjuncted hydraulic pump motor of parallel-axis type, technical solution are：Shaft orientation plunger variable pump and axial plunger fixed displacement motor are integrated in a shell, Closed circuit hydraulic transmission system is formed, the present invention includes rear cover 1, shell 2, revolving body assembly 3, motor swashplate 11, rod assembly 4, pump swash plate and its support construction 5, servo variable displacement cylinder 6, multifunction valve assembly 7 and rinses valve assembly 8.This invention simplifies the support constructions 5 of variable pump swash plate, and increase tensioning mechanism between shell 2 and rear cover 1, improve the reliability of complete machine work.
Description
Technical field
The invention belongs to Fluid Transmission and Control technical fields, and in particular to a kind of conjuncted pump motor of hydraulic pressure.
Background technology
Axial plunger pump/motor has many advantages, such as that operating pressure is high, rotating speed is high, efficient, in the necks such as industrial or agricultural and national defence
Domain is widely applied.The enclosed that oblique tray type axial plunger piston variable pump and fixed displacement motor are integrated in a shell and formed
Conjuncted pump-motor system, have the characteristics that power density it is high, it is compact-sized, without external high-pressure oil passage, can be achieved variable speed, fit
For walking arrangement fluid power system and endless-track vehicle hydraulic steering system.Existing oblique tray type axial plunger piston variable pump is adopted more
Use cylindrical roller half-and-half bearing as support component of variable swash plate, including raceway, retainer, guide pin, position-limit mechanism etc., structure
Complexity, reliability are relatively low.In addition, due to that will pump and after motor becomes one, between conjuncted pump motor shell and rear cover due to
The effect of high pressure oil and the separating force that generates is larger, to make shell and rear cover generate moderate finite deformation, influence pump motor Port Plate Pair
Normal work.
Invention content
The purpose of the present invention is：In view of the deficiencies in the prior art, the present invention proposes a kind of conjuncted pump horse of new construction
It reaches, simplifies the support construction of variable pump swash plate, and increase tensioning mechanism between shell and rear cover, improve complete machine work
Reliability.
The technical scheme is that：A kind of conjuncted hydraulic pump motor of parallel-axis type, it includes：Rear cover, shell, revolving body
Assembly, end cap, the motor spindle of parallel arrangement pump main shaft, rod assembly and pump swash plate and its support component；
Rod assembly includes：Pull rod, pressing plate, spring pad and nut；
Pump swash plate and its support component include：Pump swash plate, semiaxis bearing roller, raceway and return plate pressing plate；
Integrated connection relationship is：Motor spindle and pump main shaft are arranged in parallel in shell, and close by rear cover, end cap realization
Envelope；Motor swashplate is fixed in shell, and pump swash plate is mounted on by semiaxis bearing roller, raceway in the corresponding arc track of shell；
Two sets of revolving body assemblies by spline respectively with motor spindle and pump main shaft spline fitted；Plunger in two sets of revolving body assemblies
Slippery boots assembly is pressed on the surface of pump swash plate, motor swashplate, and two panels return plate pressing plate carries out plunger piston slippery boots assembly at pump main shaft
Auxiliary compresses；Pull rod pass through between shell and rear cover axially through hole, and pass through pressing plate, spring pad and nut tense.
Advantageous effect:(1) present invention uses confinement element one of of the return plate pressing plate as semiaxis bearing roller, prevents semiaxis
Bearing roller is detached from raceway, simplifies half-and-half bearing support construction, increases roller quantity, and then improves the carrying energy of half-and-half bearing
Power.
(2) present invention increases rod assembly between rear cover and shell, and rod assembly receiving portion split axle subtracts to hydraulic coupling
The deformation of rear cover and shell, makes to keep good working order between valve plate and cylinder body, is conducive to carry in the small course of work
The operating pressure and volumetric efficiency of high system.
Description of the drawings
Fig. 1 is the structure sectional view of the present invention；
Fig. 2 is the side view of the present invention；
Fig. 3 is that swash plate cross-sectional view is pumped in the present invention；
Fig. 4 is the restrained condition of return plate double of bearing roller of pressing plate when pumping zero pivot angle of swash plate；
Fig. 5 is the restrained condition of return plate double of bearing roller of pressing plate when pumping swash plate swash plate maximum pendulum angle.
Specific implementation mode
Referring to attached drawing, a kind of conjuncted hydraulic pump motor of parallel-axis type, it includes：Motor spindle 18 and pump main shaft 19, rear cover
1, shell 2, revolving body assembly 3, rod assembly 4, pump swash plate and its support component 5, servo variable displacement cylinder 6, multifunction valve 7, flushing
Valve 8, valve plate 10, motor swashplate 11 and end cap 13；
Revolving body assembly 3 includes：Cylinder body 3a, return plate 3b, spherical hinge 3c, washer 3d, central spring 3e, little spring 3f,
Baffle ring 3g and plunger piston slippery boots assembly 3h；Central spring 3e is compressed in the centre bore of cylinder body 3a by washer 3d and baffle ring 3g；Small bullet
Spring 3f is arranged in the hole of spherical hinge 3c, and spherical shape hinge 3c is mounted on the front end of cylinder body 3a；Plunger piston slippery boots assembly 3h is arranged in cylinder body
In the cycle hole of 3a；
Rod assembly 4 includes：Pull rod 4a, pressing plate 4b, spring pad 4c and nut 4d；
Pump swash plate and its support component 5 include：Pump swash plate 5a, semiaxis bearing roller 5b, raceway 5c and return plate pressing plate 5d；
Integrated connection relationship is：Motor swashplate 11 is fixed on by pin 12 on shell 2, and pump swash plate 5a is rolled by half-and-half bearing
Sub- 5b and raceway 5c are supported on shell 2；Motor spindle 18 and pump main shaft 19 are supported by roller bearing 15 and sliding bearing 21
Between rear cover 1 and shell 2, parallel arrangement；Two sets of revolving body assemblies 3 are connected by spline and motor spindle 18 and pump main shaft 19
It connects；Plunger piston slippery boots assembly 3h in the holes cylinder body 3a is pressed on pump swash plate 5a, motor swashplate 11 by spherical shape hinge 3c, return plate 3b
Surface, in addition, also two panels return plate pressing plate 5d is mounted on by screw 5e on pump swash plate 5a, to plunger piston slippery boots assembly 3h into
Row auxiliary compresses；There are two 7, flushing valves 8 of multifunction valve and two valve plates 10, rear cover 1 to pass through bolt 9 for dress on rear cover 1
It is connect with shell 2, and compresses valve plate 10 and revolving body assembly 3；It is disposed in the input/output terminal of pump motor and is sealed equipped with O shapes
The end cap 13 of circle 16, spindle nose oil sealing 17, end cap 13 are mounted on by screw 14 on shell 2；In the side of shell 2, it is equipped with and watches
Variable cylinder 6 is taken, servo variable displacement cylinder 6 is connect with variable pull rod 23, and variable pull rod 23 is connect with pump swash plate 5a, passes through servo variable displacement cylinder
6 can change the angle of inclination of pump swash plate 5a, to realize change discharge capacity；There is rod assembly 4 between rear cover 1 and shell 2, draws
Bar 4a pass through between shell 2 and rear cover 1 axially through hole, and pass through pressing plate 4b, spring pad 4c and nut 4d is tensed.
The cross beam support of the one end pull rod 4a passes through shell 2 and rear cover 1 in the centre position of 2 front end face of shell, the other end
On through-hole, and load onto pressing plate 4b, spring pad 4c and nut 4d, by tightening nut 4d, pull rod made to generate certain pretightning force,
Rear cover 1 and shell 2 are tensed, enable to bear to be incited somebody to action by what high pressure liquid pressure oil generated in a part of conjuncted pump motor course of work
The separating force that rear cover 1 and shell 2 are pushed open reduces the deformation of rear cover 1 and shell 2, makes to be formed between cylinder body 3a and valve plate 10
Port Plate Pair keeps good working order, improves the performance and reliability of complete machine.
Specifically assembling steps are：
(1) two roller bearings 15 are attached separately on motor spindle 18 and pump main shaft 19, are used in combination snap ring card good；By the two
It is attached separately in 2 corresponding mounting hole of shell, loads onto 13 blending bolt 14 of end cap and tighten；End cap 13 and its above O shapes sealing
Circle 16 and oil sealing 17 play the role of positioning bearing, sealing, can simultaneously serve as the installation of pump motor installation on other devices
Seam allowance.
(2) motor swashplate 11 is fixed on by pin 12 on shell 2, by the semiaxis bearing roller 5b of pump side and raceway 5c peaces
On 2 corresponding arc track of shell.
(3) washer 3d, central spring 3e, washer 3d are sequentially loaded into cylinder body 3a centre bores, snap ring 3g cards is used in combination well；So
Little spring 3f is packed into the corresponding holes spherical hinge 3c afterwards, and is mounted in the ends cylinder body 3a；9 plunger piston slippery boots assembly 3h are packed into back
In the corresponding mounting holes of journey disk 3b, make the arc-shaped ball-and-socket of return plate with plunger in same direction, finally by return plate b and plunger
The slippery boots assembly 3h and cylinder body 3a of front, spherical hinge 3c are assembled together, and form revolving body assembly 3.
(4) a set of revolving body assembly 3 is packed into 2 inner motor side of shell, is connect with motor spindle 18 by spline；It will be another
Outer a set of revolving body assembly 3 is placed on pump swash plate 5a, be used in combination two sets of return plate pressing plate 5d and bridge screw 5e by return plate 3b,
Plunger piston slippery boots assembly 3h is pressed on pump swash plate 5a, then by pumping the fabrication hole 5f on swash plate 5a, with tooling by above-mentioned component
It is packed into the side that shell 2 pumps, makes the spline fitted of the spline and pump main shaft 19 of cylinder body 3a, spherical hinge 3c, and pump swash plate 5a is made to fall
On semiaxis bearing roller 5b.
(5) two multifunction valves 7 are mounted on rear cover 1 in corresponding mounting hole, a flushing valve 8 is filled by screw
On rear cover 1, two sliding bearings 21 are packed on rear cover 1 in corresponding spindle mounting hole, are finally led to two valve plates 10
Valve plate positioning pin 20 is crossed on rear cover 1.
(6) component that (5) step assembles is assembled into shell 2 and its internal revolving body assembly 3 etc. installed
One makes motor spindle 18 and pump main shaft 19 be inserted into the plain bearing bore for the supporting sleeve assembly 21 being located on rear cover 1, and passes through
Bolt 9 is connected and is tightened；By rod assembly 4 by the hole on shell 2 and rear cover 1, from spindle nose one end through rear cover 1 one
End, and tensed by pressing plate 4b, spring pad 4c and nut 4d.
(7) in the housing side of pump motor, installation servo variable displacement cylinder assembly 6, and axis pin 24, pin 25 is run through and is become
It measures pull rod 23 to connect, the angle of inclination of pump swash plate 5a can be changed by it, to realize the displacement variation of pump.
It preferably, can be by the plunger piston slippery boots group described in said program under the premise of meeting the requirement of plunger stiffness
The plunger of part 3h is designed as hollow-core construction.Plunger quality is alleviated using hollow-core construction, the quality of plunger is reduced, reduces column
The inertia force generated when high-speed motion is filled in, the working speed for improving hydraulic pump motor is conducive to；By closing plunger cavity, subtract
Small " dead volume " of plunger cavity is conducive to the compression shock, vibration, noise and the cavitation erosion that reduce pump motor, is conducive to improve
The volumetric efficiency of pump motor.
Claims (3)
1. a kind of conjuncted hydraulic pump motor of parallel-axis type, it includes：Rear cover (1), shell (2), revolving body assembly (3), motor is oblique
Disk (11), end cap (13), motor spindle (18), the pump main shaft (19) of parallel arrangement, characterized in that it further includes：Rod assembly
(4) and pump swash plate and its support component (5)；
The rod assembly (4) includes：Pull rod (4a), pressing plate (4b), spring pad (4c) and nut (4d)；
The pump swash plate and its support component (5) include：Pump swash plate (5a), semiaxis bearing roller (5b), raceway (5c) and return plate
Pressing plate (5d)；
Integrated connection relationship is：The motor spindle (18) and the pump main shaft (19) are arranged in parallel in the shell (2), and
Sealing is realized by the rear cover (1), the end cap (13)；The motor swashplate (11) is fixed in the shell (2), described
It pumps swash plate (5a) and the shell (2) corresponding arc track is mounted on by the semiaxis bearing roller (5b), the raceway (5c)
It is interior；Two sets of revolving body assemblies (3) by spline respectively with the motor spindle (18) and it is described pump main shaft (19) spline
Cooperation；It is oblique that plunger piston slippery boots assembly (3h) in two sets of revolving body assemblies (3) is pressed on the pump swash plate (5a), the motor
The surface of disk (11), return plate pressing plate (5d) described in two panels carry out the plunger piston slippery boots assembly (3h) at the pump main shaft (19)
Auxiliary compresses；The pull rod (4a) pass through between the shell (2) and the rear cover (1) axially through hole, and pass through the pressure
Plate (4b), the spring pad (4c) and the nut (4d) tense.
2. a kind of conjuncted hydraulic pump motor of parallel-axis type as described in claim 1, it is characterised in that：The end cap (13) is above
Equipped with O-ring seals (16) and oil sealing (17).
3. a kind of conjuncted hydraulic pump motor of parallel-axis type as claimed in claim 1 or 2, it is characterised in that：The plunger piston slippery boots
The plunger of component (3h) is hollow-core construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210839.7A CN105715532B (en) | 2016-04-06 | 2016-04-06 | A kind of conjuncted hydraulic pump motor of parallel-axis type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210839.7A CN105715532B (en) | 2016-04-06 | 2016-04-06 | A kind of conjuncted hydraulic pump motor of parallel-axis type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715532A CN105715532A (en) | 2016-06-29 |
| CN105715532B true CN105715532B (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610210839.7A Active CN105715532B (en) | 2016-04-06 | 2016-04-06 | A kind of conjuncted hydraulic pump motor of parallel-axis type |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246424B (en) * | 2017-06-05 | 2018-10-19 | 中国北方车辆研究所 | Conjuncted hydraulic pump motor automatic cycle tests Pneumatic operating mechanism |
| CN107178497B (en) * | 2017-06-06 | 2019-05-10 | 中国北方车辆研究所 | A kind of integrated flow oil circuit casting of conjuncted hydraulic pump motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205638889U (en) * | 2016-04-06 | 2016-10-12 | 北京理工大学 | Conjuncted hydraulic pump motor of parallel shaft type |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0874962A (en) * | 1994-09-09 | 1996-03-19 | Kubota Corp | Static oil pressure-type continuously variable transmission |
| CN1085803C (en) * | 1999-05-18 | 2002-05-29 | 徐维胜 | Double inclined plate synchronous rotation internal power split stream hydraulic variable speed unit |
| CN100491772C (en) * | 2006-07-21 | 2009-05-27 | 贵州力源液压股份有限公司 | Double variable hydraulic driving device for hand servo control |
| CN203730685U (en) * | 2014-01-15 | 2014-07-23 | 浙江阿凡特精密设备制造有限公司 | Agricultural machine hydraulic stepless speed-change device |
| CN204212963U (en) * | 2014-09-28 | 2015-03-18 | 宁波广天赛克思液压有限公司 | A kind of swash plate supporting structure of Variable plunger pump |
| CN204878581U (en) * | 2015-08-26 | 2015-12-16 | 浙江奥威特液压机械有限公司 | Hydrostatic infinitely variable speed device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205638889U (en) * | 2016-04-06 | 2016-10-12 | 北京理工大学 | Conjuncted hydraulic pump motor of parallel shaft type |
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