CN103527438B - A kind of integrate motor pump for hydraulic efficiency system - Google Patents

A kind of integrate motor pump for hydraulic efficiency system Download PDF

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Publication number
CN103527438B
CN103527438B CN201210231242.2A CN201210231242A CN103527438B CN 103527438 B CN103527438 B CN 103527438B CN 201210231242 A CN201210231242 A CN 201210231242A CN 103527438 B CN103527438 B CN 103527438B
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China
Prior art keywords
pump
electric machine
assembly
motor
main shaft
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CN103527438A (en
Inventor
朱熠
王毅
刘会祥
苏静静
秦二卫
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China Academy of Launch Vehicle Technology CALT
Beijing Research Institute of Precise Mechatronic Controls
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China Academy of Launch Vehicle Technology CALT
Beijing Research Institute of Precise Mechatronic Controls
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Abstract

The invention belongs to a kind of electric-motor pump, specifically disclose a kind of electric-motor pump for hydraulic efficiency system, it comprises assembly of the plunger pump, electric machine assembly and rotating transformer assembly, and the two ends of electric machine assembly are fixedly connected with rotating transformer assembly with assembly of the plunger pump respectively. This electric-motor pump adopts brushless machine and the integrated design of ram pump height fusion, effectively reduces structure space, and volume is little, light weight, compact construction, sealing reliability height.

Description

A kind of integrate motor pump for hydraulic efficiency system
Technical field
The invention belongs to a kind of electric-motor pump, it is specifically related to a kind of height integrate motor pump for hydraulic efficiency system.
Background technology
In current hydraulic efficiency system, Power Component often adopts single motor and ram pump, motor actuation plunger pump output hydraulic pressure energy. Motor and ram pump are all independent products, can test separately. Ram pump comprises mechanical sealing mechanism, all is difficult to reach zero leakage in running with in leaving standstill, cannot meet the requirement of long-term storage.
Summary of the invention
It is an object of the invention to provide a kind of integrate motor pump for hydraulic efficiency system, this electric-motor pump adopts brushless machine and the integrated design of ram pump height fusion, effectively reduces structure space, and volume is little, light weight, compact construction, sealing reliability height.
Realizing the technical scheme of the object of the invention: a kind of electric-motor pump for hydraulic efficiency system, it comprises assembly of the plunger pump, electric machine assembly and rotating transformer assembly, and the two ends of electric machine assembly are fixedly connected with rotating transformer assembly with assembly of the plunger pump respectively.
Described assembly of the plunger pump comprises pump housing, point food tray, pump main shaft, pump rotor, plunger assembly, bearing, one end of pump housing is fixedly connected with electric machine assembly, the other end of pump housing is fixedly connected with a point food tray, it is provided with pump main shaft, pump rotor, plunger assembly and bearing in the cavity that pump housing and point food tray are formed, one end of pump main shaft is connected with electric machine assembly, being connected by plunger assembly between the other end of pump main shaft and pump rotor, between pump main shaft and pump housing, cover has bearing.
Described bearing comprises the first deep groove ball bearing, thrust ball bearing and the 2nd deep groove ball bearing, and pump main shaft outside is overlapped from right to left successively the first deep groove ball bearing, thrust ball bearing, the 2nd deep groove ball bearing.
Described the 2nd overlaps between deep groove ball bearing and pump housing lining.
The left side of described lining is provided with elasticity back-up ring.
Described electric machine assembly comprises electric machine casing, electric machine main shaft, motor stator, motor rotor, the 3rd deep groove ball bearing, Connection Block and motor seal socket; The side of electric machine casing is fixedly connected with pump housing; Another side of electric machine casing is fixedly connected with Connection Block, and this side roof part of electric machine casing is provided with motor seal socket, and electric machine main shaft and overcoat have motor rotor, and between motor rotor and electric machine casing, cover has motor stator; The 3rd deep groove ball bearing it is provided with between one end of electric machine main shaft and electric machine casing; Being provided with another the 3rd deep groove ball bearing between the other end of electric machine main shaft and Connection Block, this end of electric machine main shaft is connected with rotating transformer assembly.
The outer sheath of described motor rotor has sleeve, and a side plate being enclosed within electric machine main shaft is respectively installed in the both sides of motor rotor.
It is provided with sealing-ring between the right-hand member of described electric machine casing and stifled head.
Described stifled head installs position in electric machine casing, and the right side of stifled head carries out axial limiting by pump housing.
Described rotating transformer assembly comprises revolving and becomes seal socket, revolves and become housing and rotating transformer, revolves the uncovered end becoming housing and is connected with Connection Block, revolves change case top and is provided with and revolves change seal socket, and electric machine main shaft left end is nested in rotating transformer.
The Advantageous Effects of the present invention is: the present invention adopts motor and the design of ram pump height fusion, effectively reduces the structure space of product, and therefore volume is little, light weight, compact construction; Adopting the full-closed structure of sealing good reliability, cancel traditional mechanical seal structure, leather bowl sealing structure and the oil leakaging port that leaks, outer gland sealing is " O " RunddichtringO static seal structure by electric-motor pump; Motor rotor adopts full-closed structure, is convenient to improve machining surface and adds quality, the logical oil loss in operation process can be reduced to less than 2%; Pump inner chamber is connected with motor cavity, and inner circulation oil return can effectively reduce the heating of electric machine assembly, and single non-stop run time can reach more than 2 hours; Adopt electric machine speed regulation control techniques, it is achieved electric-motor pump output rating is mated mutually with load power, avoid product running at a high speed for a long time, effectively reduce wear and system noise, reduce power consumption, thus improve work-ing life and the reliability of product.
The present invention is applicable to the hydraulic efficiency system that sealing reliability and power weight ratio requirement is high.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of a kind of electric-motor pump for hydraulic efficiency system provided by the present invention;
Fig. 2 is the cross-sectional view of a kind of electric-motor pump for hydraulic efficiency system provided by the present invention;
Fig. 3 is the upward view of Fig. 2.
In figure: 1. assembly of the plunger pump, 2. electric machine assembly, 3. rotating transformer assembly, 4. pump housing, 5. point food tray, 6. pump main shaft, 7. pump rotor, 8. plunger assembly, 9, 11, 21. deep groove ball bearings, 10. thrust ball bearing, 12, 14, 27, 30, 31. screws, 13. elasticity back-up rings, 15. linings, 16. electric machine casings, 17. electric machine main shafts, 18. motor stators, 19. motor rotors, 20. side plates, 22. sleeves, 23. sealing-rings, 24. stifled heads, 25. Connection Blocks, 26. motor seal sockets, 28. revolve change seal socket, 29. revolve change housing, 32. rotating transformers, 33 assembly of the plunger pump inner chambers, 34. electric machine assembly inner chambers, 35. oil return mouths, 36. oil-ins, 37. oil outlets.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of electric-motor pump for hydraulic efficiency system provided by the present invention comprises: assembly of the plunger pump 1, electric machine assembly 2 and rotating transformer assembly 3.
As depicted in figs. 1 and 2, assembly of the plunger pump 1 comprises pump housing 4, point food tray 5, pump main shaft 6, pump rotor 7, plunger assembly 8, first deep groove ball bearing 9, thrust ball bearing 10, the 2nd deep groove ball bearing 11, first screw 12, the 2nd screw 14, elasticity back-up ring 13, lining 15. The pump housing 4 of assembly of the plunger pump 1 is fixedly connected with by four the 2nd screws 14 with the electric machine casing 16 of electric machine assembly 2, and pump housing 4 is fixedly connected with by four the first screws 12 with a point food tray 5. As shown in Figure 2, it is rotationally connected by plunger assembly 8 between pump main shaft 6 and pump rotor 7. Pump main shaft 6 intermediary outside is overlapped from right to left successively the first deep groove ball bearing 9, thrust ball bearing 10, the 2nd deep groove ball bearing 11. First deep groove ball bearing 9, thrust ball bearing 10 are nested in pump housing 4. Between 2nd deep groove ball bearing 11 and pump housing 4, cover has lining 15, and elasticity back-up ring 13 is nested in pump housing 4 and elasticity back-up ring 13 is positioned at the left side of lining 15. Food tray 5 is divided pump main shaft 6, pump rotor 7, plunger assembly 8, first deep groove ball bearing 9, thrust ball bearing 10, the 2nd deep groove ball bearing 1 to be sealed in pump housing 4. Assembly of the plunger pump inner chamber 33 is formed between electric machine casing 16 right side of pump housing 4 and electric machine assembly 2. The left end of pump main shaft 6 is enclosed within outside the electric machine main shaft 17 of electric machine assembly 2, and is connected by key between pump main shaft 6 with electric machine main shaft 17.
Electric machine assembly 2 comprise electric machine casing 16, electric machine main shaft 17, motor stator 18, motor rotor 19, side plate 20, the 3rd deep groove ball bearing 21, sleeve 22, sealing-ring 23, stifled 24, Connection Block 25, motor seal socket 26, the 3rd screw 27. Electric machine casing 16 is fixedly connected with by four the 3rd screws 27 with motor seal socket 26. In the middle part of electric machine main shaft 17, overcoat has motor rotor 19, and is connected by key between the two. A side plate 20 being enclosed within electric machine main shaft 17 is respectively installed in the both sides of motor rotor 19, and motor rotor 19 overcoat sleeved 22, defines a closed structure simultaneously. Motor stator 18 interference (motor stator 18 cylindrical is more bigger than electric machine casing 16 internal diameter) press-in electric machine casing 16 is interior thus fixing, the left end top of electric machine casing 16 has through hole, motor seal socket 26 is embedded in this through hole, and motor seal socket 26 is fixed on electric machine casing 16 by four the 3rd screws 27. It is provided with stifled 24 between the right-hand member of electric machine casing 16 and pump housing 4, between electric machine casing 16 and stifled 24, it is provided with sealing-ring 23. Between the left end of electric machine main shaft 17 and electric machine casing 16, cover has the 3rd deep groove ball bearing 21. Between the right-hand member of electric machine main shaft 17 and electric machine casing 16, cover has Connection Block 25, and between Connection Block 25 and electric machine main shaft 17, cover has another the 3rd deep groove ball bearing 21. Electric machine main shaft 17 most between left part and Connection Block 25 cover have the rotating transformer 32 of rotating transformer assembly 3. The other end of Connection Block 25 is enclosed within revolving of rotating transformer assembly 3 and becomes in housing 29.
Rotating transformer assembly 3 comprises the 4th screw 30, the 5th screw 31, revolves change seal socket 28, revolves change housing 29, rotating transformer 32. Revolve become housing 29, electric machine casing 16, Connection Block 25 be fixedly connected with by the 5th screw 31. Revolve and become housing 29 top and have through hole, revolve and become seal socket 28 and be embedded in this through hole, revolve and become seal socket 28 and be fixed on by four the 4th screws 30 to revolve and become on housing 29. Electric machine main shaft 17 left end is nested in rotating transformer 32 and is connected by key between the two.
Assembly of the plunger pump 1 is a kind of high speed and high pressure ram pump. Electric machine assembly 2 drives pump main shaft 6 to operate, thus drives plunger assembly 8 to-and-fro movement in pump rotor 7, is constantly hocketed by oil suction stroke and oil extraction stroke, and assembly of the plunger pump 1 can output hydraulic pressure energy continuously. Eliminating traditional mechanical seal, cup leather packing and external drain tap in the structure of assembly of the plunger pump 1, therefore assembly of the plunger pump inner chamber 33 and electric machine assembly inner chamber 34 are interconnected.
The function of electric machine assembly 2 electric energy of input is changed into mechanical energy, output speed and moment of torsion, actuation plunger pump assembly 1 operation. A side plate 20 is respectively installed in the both sides of motor rotor 19, and motor rotor 19 overcoat sleeved 22, defines a closed structure simultaneously. By improving the surface working precision of side plate 20 and sleeve 22, the object reducing the loss of logical oil can be reached, thus effectively improve the working efficiency of the present invention for the integrate motor pump of hydraulic efficiency system.
The function of rotating transformer assembly 3 measures the rotating speed of electric machine main shaft 17 in real time, by revolving the motor drive controller becoming seal socket 28 and being delivered in hydraulic efficiency system by the work rotary speed data of electric machine assembly 2.
The external hydraulic interface of electric-motor pump is shown in Fig. 3. Electric-motor pump adopts the board-like mode being connected to fix with hydraulic efficiency system. Three oily mouths (i.e. oil-in 36, oil return mouth 35 and oil outlet 37) bottom electric machine casing 16 are corresponding with three oily mouths in hydraulic efficiency system respectively. Oil-in 36, oil return mouth 35 are connected with the fuel tank in hydraulic efficiency system, and hydraulic efficiency oil enters electric-motor pump from oil-in 36, through undue food tray 5, pump rotor 7, produce compression, finally flow out by oil outlet 37 under the effect of plunger assembly 8. Oil outlet 37 and the load pipeline connection in hydraulic efficiency system. Leakage Energy (i.e. oil return) owing to producing in assembly of the plunger pump 1 operation is general higher than the pressure of hydraulic reservoir, and therefore oil return is from assembly of the plunger pump inner chamber 33, through electric machine assembly inner chamber 34, finally arrives oil return mouth 35. Sealing-ring 23 and stifled the 24 oil circuit direction that ensure that oil return. In the operation process of electric-motor pump, oil return can form lasting loop, takes away the heat that electric machine assembly 2 produces, effectively reduces heating.
The working process of the present invention is as follows: outside power supply is powered for electric machine assembly 2 by motor seal socket 26, and electric machine assembly 2 converts electric energy to the hydraulic pressure energy of hydraulic efficiency system. Adopting unidirectional drive control techniques, using hydraulic efficiency system load (pressure, flow, power etc.) as manipulated variable, when load is lower than set(ting)value, the motor drive controller drive-motor assembly 2 in hydraulic efficiency system is running at a high speed, supplements high-voltage oil liquid; When load reaches set(ting)value, motor controller controls electric machine assembly 2 low-speed running in hydraulic efficiency system, maintains system works demand. The output load thus realizing this integrate motor pump carries out energy management according to system demand, effectively utilizes the energy.
Above in conjunction with drawings and Examples, the present invention is explained in detail, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, it is also possible under the prerequisite not departing from objective of the present invention, make various change. The content not being described in detail in the present invention all can adopt prior art.

Claims (8)

1. the electric-motor pump for hydraulic efficiency system, it is characterized in that: it comprises assembly of the plunger pump (1), electric machine assembly (2) and rotating transformer assembly (3), and the two ends of electric machine assembly (2) are fixedly connected with rotating transformer assembly (3) with assembly of the plunger pump (1) respectively;
Described assembly of the plunger pump (1) comprises pump housing (4), divide food tray (5), pump main shaft (6), pump rotor (7), plunger assembly (8), bearing, one end of pump housing (4) is fixedly connected with electric machine assembly (2), the other end of pump housing (4) is fixedly connected with a point food tray (5), it is provided with pump main shaft (6) in the cavity that pump housing (4) and point food tray (5) are formed, pump rotor (7), plunger assembly (8) and bearing, one end of pump main shaft (6) is connected with electric machine assembly (2), it is connected by plunger assembly (8) between the other end of pump main shaft (6) with pump rotor (7), between pump main shaft (6) and pump housing (4), cover has bearing,
Described electric machine assembly (2) comprises electric machine casing (16), electric machine main shaft (17), motor stator (18), motor rotor (19), the 3rd deep groove ball bearing (21), Connection Block (25) and motor seal socket (26); The side of electric machine casing (16) is fixedly connected with pump housing (4); Another side of electric machine casing (16) is fixedly connected with Connection Block (25), this side roof part of electric machine casing (16) is provided with motor seal socket (26), electric machine main shaft (17) overcoat has motor rotor (19), and between motor rotor (19) and electric machine casing (16), cover has motor stator (18); The 3rd deep groove ball bearing (21) it is provided with between one end of electric machine main shaft (17) and electric machine casing (16); Being provided with another the 3rd deep groove ball bearing (21) between the other end of electric machine main shaft (17) and Connection Block (25), this end of electric machine main shaft (17) is connected with rotating transformer assembly (3).
2. a kind of electric-motor pump for hydraulic efficiency system according to claim 1, it is characterized in that: described bearing comprises the first deep groove ball bearing (9), thrust ball bearing (10) and the 2nd deep groove ball bearing (11), pump main shaft (6) outside is overlapped from right to left successively the first deep groove ball bearing (9), thrust ball bearing (10), the 2nd deep groove ball bearing (11).
3. a kind of electric-motor pump for hydraulic efficiency system according to claim 2, it is characterised in that: between the 2nd described deep groove ball bearing (11) and pump housing (4), cover has lining (15).
4. a kind of electric-motor pump for hydraulic efficiency system according to claim 3, it is characterised in that: the left side of described lining (15) is provided with elasticity back-up ring (13).
5. a kind of electric-motor pump for hydraulic efficiency system according to claim 4, it is characterized in that: between described motor stator (18) and motor rotor (19), cover has sleeve (22), and the both sides of motor rotor (19) are respectively installed one and are enclosed within electric machine main shaft (17) side plate (20) outward.
6. a kind of electric-motor pump for hydraulic efficiency system according to claim 5, it is characterised in that: it is provided with sealing-ring (23) between the right-hand member of described electric machine casing (16) and pump housing (4).
7. a kind of electric-motor pump for hydraulic efficiency system according to claim 6, it is characterised in that: it is provided with stifled head (24) between described sealing-ring (23) and pump housing (4).
8. a kind of electric-motor pump for hydraulic efficiency system according to claim 7, it is characterized in that: described rotating transformer assembly (3) comprises revolving and becomes seal socket (28), revolves and become housing (29) and rotating transformer (32), revolve the uncovered end becoming housing (29) to be connected with Connection Block (25), revolve become housing (29) top be provided with revolve become seal socket (28), electric machine main shaft (17) is nested in rotating transformer (32).
CN201210231242.2A 2012-07-04 2012-07-04 A kind of integrate motor pump for hydraulic efficiency system Active CN103527438B (en)

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Application Number Priority Date Filing Date Title
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CN103527438B true CN103527438B (en) 2016-06-01

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2751476T3 (en) * 2014-03-31 2020-03-31 Guangdong Huachan Research Institute Of Intelligent Transp System Co Ltd Steering motor
DE102015219091A1 (en) * 2015-10-02 2017-04-06 Robert Bosch Gmbh Electrohydraulic compact unit
CN106640583A (en) * 2015-10-30 2017-05-10 北京精密机电控制设备研究所 Servo motor pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85200215U (en) * 1985-04-01 1986-01-01 机械工业部济南铸造锻压机械研究所 Axial plunger pump combined with a motor
EP0484762A1 (en) * 1990-11-06 1992-05-13 FAIP S.r.L. OFFICINE MECCANICHE Twin piston, commutator motor driven, high pressure pump for hydrocleaning equipment
US5960699A (en) * 1996-09-16 1999-10-05 Robert Bosch Gmbh Hydraulic pump unit
CN101635485A (en) * 2009-08-24 2010-01-27 浙江大学 Integrated hydraulically-driven asynchronous generator
CN101725494A (en) * 2009-12-11 2010-06-09 启东市东方高压油泵厂 Digital pulse variable axial plunger pump
CN201645776U (en) * 2009-12-18 2010-11-24 广州博创机械有限公司 Injection molding machine controlled by servo motor and comprising double-grade piston pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85200215U (en) * 1985-04-01 1986-01-01 机械工业部济南铸造锻压机械研究所 Axial plunger pump combined with a motor
EP0484762A1 (en) * 1990-11-06 1992-05-13 FAIP S.r.L. OFFICINE MECCANICHE Twin piston, commutator motor driven, high pressure pump for hydrocleaning equipment
US5960699A (en) * 1996-09-16 1999-10-05 Robert Bosch Gmbh Hydraulic pump unit
CN101635485A (en) * 2009-08-24 2010-01-27 浙江大学 Integrated hydraulically-driven asynchronous generator
CN101725494A (en) * 2009-12-11 2010-06-09 启东市东方高压油泵厂 Digital pulse variable axial plunger pump
CN201645776U (en) * 2009-12-18 2010-11-24 广州博创机械有限公司 Injection molding machine controlled by servo motor and comprising double-grade piston pump

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