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 PDF

Info

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
Authority
CN
China
Prior art keywords
motor
pump
shell
swash plate
rear cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610210839.7A
Other languages
Chinese (zh)
Other versions
CN105715532A (en
Inventor
荆崇波
苑士华
周俊杰
魏超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Institute of Technology BIT
Original Assignee
Beijing Institute of Technology BIT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Institute of Technology BIT filed Critical Beijing Institute of Technology BIT
Priority to CN201610210839.7A priority Critical patent/CN105715532B/en
Publication of CN105715532A publication Critical patent/CN105715532A/en
Application granted granted Critical
Publication of CN105715532B publication Critical patent/CN105715532B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component 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

A kind of conjuncted hydraulic pump motor of parallel-axis type
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.
CN201610210839.7A 2016-04-06 2016-04-06 A kind of conjuncted hydraulic pump motor of parallel-axis type Active CN105715532B (en)

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

Family

ID=56159677

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610210839.7A Active CN105715532B (en) 2016-04-06 2016-04-06 A kind of conjuncted hydraulic pump motor of parallel-axis type

Country Status (1)

Country Link
CN (1) CN105715532B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN105715532A (en) 2016-06-29

Similar Documents

Publication Publication Date Title
CN208749529U (en) A kind of liquid nitrogen pump power end assembly
CN108547766A (en) A kind of liquid nitrogen pump power end assembly
CN205638889U (en) Conjuncted hydraulic pump motor of parallel shaft type
CN105715532B (en) A kind of conjuncted hydraulic pump motor of parallel-axis type
CN201560890U (en) Hydraulic motor without link levers of planar oil distributing crankshaft
CN109026582A (en) Eccentric abrasion prevention plunger piston slippery boots assembly, plunger pump and piston motor
CN112012904A (en) High-low pressure integrated oil pump system for diaphragm compressor
CN202100456U (en) Aluminum alloy steering pump
CN102635546A (en) Plunger pump with composite shell
CN202746131U (en) Swash plate type variable displacement piston pump
CN209761645U (en) sliding disc supporting type non-through shaft plunger pump or motor
CN202789499U (en) Plunger pump with compound material casing body
CN207609520U (en) A kind of super-silent gas liquid two purpose pump head of general plug balance
CN111120238A (en) Floating transmission mechanism and micropump
CN107110134B (en) Axial piston engine
CN109630536A (en) 20 cylinder diesel crankshaft of V-type
US6732633B1 (en) Reduced dead volume hollow piston
CN105114278B (en) Axial plunger pump
CN211975301U (en) Lightweight swash plate type variable plunger pump
CN201344123Y (en) Novel pump cover of radial plunger pump
CN216381739U (en) Swash plate type straight shaft variable pump
CN207906191U (en) A kind of rapid hydraulic oil cylinder structure
CN203879734U (en) High pressure hydraulic pump plunger of hollow structure
CN106438255A (en) Coaxial and same-side compact type variable structure applicable to bidirectional variable-displacement plunger pump
CN211370706U (en) Stop limit structure of micro pump transmission shaft

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant