CN102128165A - Dual-oil inlet hydraulic gear pump - Google Patents

Dual-oil inlet hydraulic gear pump Download PDF

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Publication number
CN102128165A
CN102128165A CN2011100740074A CN201110074007A CN102128165A CN 102128165 A CN102128165 A CN 102128165A CN 2011100740074 A CN2011100740074 A CN 2011100740074A CN 201110074007 A CN201110074007 A CN 201110074007A CN 102128165 A CN102128165 A CN 102128165A
Authority
CN
China
Prior art keywords
gear
pump
transmission shaft
oil inlet
dual
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.)
Pending
Application number
CN2011100740074A
Other languages
Chinese (zh)
Inventor
张春林
李军江
李宝宾
刘小东
杨建国
安桂红
李旭慧
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.)
CHANGZHI HYDRAULIC CO LTD
Original Assignee
CHANGZHI HYDRAULIC CO LTD
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 CHANGZHI HYDRAULIC CO LTD filed Critical CHANGZHI HYDRAULIC CO LTD
Priority to CN2011100740074A priority Critical patent/CN102128165A/en
Publication of CN102128165A publication Critical patent/CN102128165A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a dual-oil inlet hydraulic gear pump with double oil inlets, and belongs to the technical field of hydraulic pumps. The problem to be solved is to provide a low-pressure dual-oilway gear pump which is suitable for engineering mechanical oil return, has large flow and is resistant to high temperature. The invention adopts a technical scheme that: a first transmission shaft and a first gear are machined integrally, and a second transmission shaft and a second gear are machined integrally; a third gear is arranged on the other side of the first transmission shaft, and a fourth gear is arranged on the other side of the second transmission shaft; the first gear is a rear pump driving gear, the second gear is a rear pump driven gear, the third gear is a front pump driven gear, and the fourth gear is a front pump driving gear; and a front pump oil inlet is formed on a pump front cover, a rear pump oil inlet and a total oil outlet are formed on a pump rear cover, and the space in a pump body is divided into front and rear parts by an intermediate body. The dual-oil inlet hydraulic gear pump can be used for hydraulic gear pumps.

Description

Two filler opening hydraulic gear pumps
Technical field
The two filler opening hydraulic gear pumps of the present invention belong to the oil hydraulic pump technical field.
Background technique
The pump body structure of the two oil circuit low pressure hydraulic gear pumps of existing big flow mainly comprises at present: two cover pump protecgulums, pump postoperculum, the pump housing, preceding rear pump driven gear linkage structure complexity, the volume of pump is big, part is more, two filler openings, two oil outlets are arranged, and pump delivery, oil absorption, working life reach and all can not meet the demands into and out of the hydraulic fluid port setting.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, problem to be solved is: a kind of big flow of engineering machinery oil return, two oil circuit gear pumps of resistant to elevated temperatures low pressure of being applicable to are provided.
The two filler opening hydraulic gear pumps of the present invention, first transmission shaft and second transmission shaft be arranged in parallel in the pump housing, and first transmission shaft and first Gear Processing are integral, and second transmission shaft and second Gear Processing are integral, described first gear and second gear engagement.
The opposite side of first transmission shaft is equipped with the 3rd gear; The opposite side of second transmission shaft is equipped with the 4th gear; Described the 3rd gear and the 4th gear engagement.
First gear is a rear pump driven gear, and second gear is a rear pump driving gear, and the 3rd gear is a front pump driven gear, and the 4th gear is a front pump driving gear.
The filler opening of front pump is arranged on the pump protecgulum; The filler opening of back pump is arranged on the pump postoperculum; Total oil outlet is arranged on the pump postoperculum; Intermediate is positioned at the middle part of the pump housing, is sleeved on first transmission shaft and second transmission shaft, and space segmentation in the pump housing is become forward and backward two-part.
Compared with prior art, the present invention has reduced two oil circuit pump intermediate connecting ring joints, has simplified two oil circuit pump body structures; The front pump filler opening is installed on the pump protecgulum, back pump filler opening, front pump, after pump hydraulic fluid port and coexist on the rear pump cover, can reduce installing space like this, reduce cost, can satisfy the performance requirement of double loop, big flow again, the oil drain quantity of pump is big, oil absorption strong, compact structure, stable and reliable operation; Can satisfy entire equipment hydraulic system cleaning, lubricated under the high temperature condition fully, the requirement of refrigerating function simultaneously from the hydraulic system oil return of two different flows.The present invention satisfies the performance requirement of engineering machinery to the hydraulic gear pump of big discharge capacity, the two oil circuits of high temperature resistant, low pressure.
Because the present invention is no seal designs, has characteristics high temperature resistant, long service life, be applicable to the medium-term and long-term use of earth mover oil return system.
Description of drawings
Fig. 1 is the two filler opening mekydro pump structure master maps of the present invention.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is Fig. 1 right elevation.
Fig. 4 is the structural representation of pump postoperculum.
Among the figure: 1-the first transmission shaft, 2-setting sleeve, 3-pump protecgulum, 4-straight pin, 5-intermediate, 6-pump postoperculum, 7-the first gear, 8-the second transmission shaft, 9-the second gear, 10-the three gear, 11-clamping bolt, 12-the four gear, 13-woodruff key, the filler opening of 14-back pump, 15-total oil outlet, the filler opening of 16-front pump.
Embodiment
Two filler opening mekydro pump structures comprise: the pump housing, first transmission shaft, second transmission shaft, first gear, second gear, the 3rd gear, the 4th gear, filler opening, oil outlet, it is characterized in that: first transmission shaft 1 and second transmission shaft 8 be arranged in parallel in the pump housing, first transmission shaft 1 and first gear 7 are processed into one, second transmission shaft 8 and second gear 9 are processed into one, described first gear 7 and 9 engagements of second gear.
The opposite side of first transmission shaft 7 is equipped with the 3rd gear 10; The opposite side of second transmission shaft 8 is equipped with the 4th gear 12; Described the 3rd gear 10 and 12 engagements of the 4th gear.
First gear 7 is a rear pump driven gear, and second gear 9 is a rear pump driving gear, and the 3rd gear 10 is a front pump driven gear, and the 4th gear 12 is a front pump driving gear.
The filler opening 13 of front pump is arranged on the pump protecgulum 3; The filler opening 14 of back pump is arranged on the pump postoperculum 6; Total oil outlet 15 is arranged on the pump postoperculum 6, front pump and the shared total oil outlet of back pump.
Intermediate 5 is positioned at the middle part of the pump housing, is sleeved on first transmission shaft 1 and second transmission shaft 8, and space segmentation in the pump housing is become forward and backward two-part.
The pump housing comprises pump protecgulum, pump postoperculum and intermediate.The 4th gear 12 is fixed on first transmission shaft 1 by woodruff key 13, and the 3rd gear 10 is sleeved on second transmission shaft 8.
The two filler opening hydraulic gear pumps of the present invention are the fixed interval (FI) low pressure gear pump, the pump protecgulum 3, the pump postoperculum 6 that during design the two cover pump housings and the pump cover of general gear pump are synthesized this gear pump.
First transmission shaft 1 of the present invention and first gear 7 are processed into one, and second transmission shaft 8 and second gear 9 are processed into one; The opposite side of first transmission shaft 7 is equipped with the 3rd gear 10; The opposite side of second transmission shaft 8 is equipped with the 4th gear 12; Make double-loop pump simple in structure, compact; The filler opening of front pump is located on the end face of pump protecgulum, and the filler opening of back pump is located on the pump postoperculum, and front pump, the shared total oil outlet of back pump have satisfied two circuit requirement, have reduced the pipeline of system, make the pump housing compacter simultaneously.
First transmission shaft 1, second transmission shaft, 8 used bearings have all adopted needle bearing, have improved the working life and the reliability of pump.With setting sleeve 12 location, the external splines of first transmission shaft, 1 end was connected with outside when the two filler opening hydraulic gear pumps of the present invention were connected with motor.Straight pin 4, clamping bolt 11 are used for pump protecgulum 3, the location when pump postoperculum 6 assembles and are connected.

Claims (1)

1. two filler opening hydraulic gear pumps, comprise the pump housing, first transmission shaft, second transmission shaft, first gear, second gear, the 3rd gear, the 4th gear, filler opening, oil outlet, it is characterized in that: first transmission shaft (1) and second transmission shaft (8) be arranged in parallel in the pump housing, first transmission shaft (1) is processed into one with first gear (7), second transmission shaft (8) is processed into one with second gear (9), described first gear (7) and second gear (9) engagement;
The opposite side of first transmission shaft (7) is equipped with the 3rd gear (10); The opposite side of second transmission shaft (8) is equipped with the 4th gear (12); Described the 3rd gear (10) and the 4th gear (12) engagement;
First gear (7) is a rear pump driven gear, and second gear (9) is a rear pump driving gear, and the 3rd gear (10) is a front pump driven gear, and the 4th gear (12) is a front pump driving gear;
The filler opening of front pump (13) is arranged on the pump protecgulum (3); The filler opening of back pump (14) is arranged on the pump postoperculum (6); Total oil outlet (15) is arranged on the pump postoperculum (6);
Intermediate (5) is positioned at the middle part of the pump housing, is sleeved on first transmission shaft (1) and second transmission shaft (8), and space segmentation in the pump housing is become forward and backward two-part.
CN2011100740074A 2011-03-27 2011-03-27 Dual-oil inlet hydraulic gear pump Pending CN102128165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100740074A CN102128165A (en) 2011-03-27 2011-03-27 Dual-oil inlet hydraulic gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100740074A CN102128165A (en) 2011-03-27 2011-03-27 Dual-oil inlet hydraulic gear pump

Publications (1)

Publication Number Publication Date
CN102128165A true CN102128165A (en) 2011-07-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011100740074A Pending CN102128165A (en) 2011-03-27 2011-03-27 Dual-oil inlet hydraulic gear pump

Country Status (1)

Country Link
CN (1) CN102128165A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913038A (en) * 2015-06-20 2015-09-16 阜新德尔汽车部件股份有限公司 Oil conveying device of vehicle automatic transmission
CN106471253A (en) * 2014-05-28 2017-03-01 株式会社岛津制作所 Gear pump or motor
CN109869310A (en) * 2019-03-28 2019-06-11 合肥长源液压股份有限公司 A kind of high viscosity medium lubricating gear pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034820A (en) * 1978-11-23 1980-06-11 Kayaba Industry Co Ltd Rotary positive-displacement fluid-machines
US5378130A (en) * 1992-03-31 1995-01-03 Shimadzu Corporation Tandem type gear pump having an integral inner middle partition wall
CN2211506Y (en) * 1994-11-10 1995-11-01 青州液压件厂 Improved two linkage gear pump
CN2217124Y (en) * 1994-11-10 1996-01-10 青州液压件厂 high pressure double gear pump
JP2004316433A (en) * 2003-04-10 2004-11-11 Shimadzu Corp Gear pump/motor
CN2751161Y (en) * 2004-12-31 2006-01-11 徐州科源液压有限公司 Hydraulic gear pump
CN202017627U (en) * 2011-03-27 2011-10-26 长治液压有限公司 Double-oil-inlet big-flow-rate hydraulic gear wheel pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2034820A (en) * 1978-11-23 1980-06-11 Kayaba Industry Co Ltd Rotary positive-displacement fluid-machines
US5378130A (en) * 1992-03-31 1995-01-03 Shimadzu Corporation Tandem type gear pump having an integral inner middle partition wall
CN2211506Y (en) * 1994-11-10 1995-11-01 青州液压件厂 Improved two linkage gear pump
CN2217124Y (en) * 1994-11-10 1996-01-10 青州液压件厂 high pressure double gear pump
JP2004316433A (en) * 2003-04-10 2004-11-11 Shimadzu Corp Gear pump/motor
CN2751161Y (en) * 2004-12-31 2006-01-11 徐州科源液压有限公司 Hydraulic gear pump
CN202017627U (en) * 2011-03-27 2011-10-26 长治液压有限公司 Double-oil-inlet big-flow-rate hydraulic gear wheel pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106471253A (en) * 2014-05-28 2017-03-01 株式会社岛津制作所 Gear pump or motor
CN106471253B (en) * 2014-05-28 2018-05-22 株式会社岛津制作所 gear pump or motor
CN104913038A (en) * 2015-06-20 2015-09-16 阜新德尔汽车部件股份有限公司 Oil conveying device of vehicle automatic transmission
CN109869310A (en) * 2019-03-28 2019-06-11 合肥长源液压股份有限公司 A kind of high viscosity medium lubricating gear pump
CN109869310B (en) * 2019-03-28 2024-04-30 合肥长源液压股份有限公司 Lubricating gear pump for high-viscosity medium

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C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20110720