CN102141035B - High-pressure gear pump with intermediate-pressure bearing lubrication - Google Patents

High-pressure gear pump with intermediate-pressure bearing lubrication Download PDF

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Publication number
CN102141035B
CN102141035B CN 201110100439 CN201110100439A CN102141035B CN 102141035 B CN102141035 B CN 102141035B CN 201110100439 CN201110100439 CN 201110100439 CN 201110100439 A CN201110100439 A CN 201110100439A CN 102141035 B CN102141035 B CN 102141035B
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CN
China
Prior art keywords
pressure
pump
gear
gear pump
high pressure
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.)
Expired - Fee Related
Application number
CN 201110100439
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Chinese (zh)
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CN102141035A (en
Inventor
韩永进
徐云涛
袁世维
郁静
师涛
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.)
Xuzhou Keyuan Hydraulics Co., Ltd.
Original Assignee
XUZHOU KEYUAN HYDRAULIC CO Ltd
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Priority to CN 201110100439 priority Critical patent/CN102141035B/en
Publication of CN102141035A publication Critical patent/CN102141035A/en
Application granted granted Critical
Publication of CN102141035B publication Critical patent/CN102141035B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a high-pressure gear pump with intermediate-pressure bearing lubrication, which relates to hydraulic machinery. The gear pump is of a two-slice type structure, which is a single-linkage or multi-linkage gear pump comprising a driving gear, a driven gear, two floating side plates and two W-shaped sealing rings, wherein the driving gear and the driven gear are respectively installed on a pump body and a pump cover through sliding bearings, two symmetrical annular slots are made on the inner side surfaces of the floating side plates and are gradually shallow grooves or gradually narrow grooves, one ends of the grooves are communicated with a high-pressure zone, and medium pressure in the grooves is transitioned to an intermediate-pressure zone step by step from a high-pressure zone. The intermediate-pressure zone is communicated with the lubricating surfaces of the sliding bearings through an intermediate-pressure oil delivery slot so that the high-pressure gear pump has sufficient oil supply and good lubricating effect. Flowing intermediate-pressure oil rapidly radiates temperature rise of the surfaces of the bearings so that the problem of abnormal bearing abrasion caused by temperature rise is effectively solved, the service life of the bearings is prolonged, and therefore, the gear pump can possibly work under a high pressure for a long term.

Description

High-pressure gear pump with intermediate-pressure bearing lubricating function
Technical field
The present invention relates to a kind of hydraulic machinery, on especially a kind of floating side plate with the high-pressure gear pump of sub-high pressure oil groove.
Background technique
Constructional engineering machinery, handling machinery etc. require supporting high-pressure gear pump, require rated pressure will reach 23MPa, and actual working pressure surpasses 25MPa.Because the gear pump outlet pressure is high, pump housing inlet/outlet pressure reduction is large, makes the sliding bearing of support teeth wheel shaft bear huge radial pressure, and when causing gear pump to work long hours, the sliding bearing temperature raises, quick abrasion, the working life of reducing bearing.How to improve the lubrication effect of bearing and reduce bearing temperature, just become to improve the gear pump key issue in working life.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of high-pressure gear pump with the sub-high pressure oil groove, end face at floating side plate is made gradually shallow type or gradually narrow type annular groove, hydraulic oil in the groove is transitioned into sub-high pressure from high pressure, press the lubricated face that enters sliding bearing by input oil groove by second highest region, bearing is carried out effectively lubricating and cooling.
The present invention is achieved through the following technical solutions: a kind of high-pressure gear pump with intermediate-pressure bearing lubricating function, this gear pump adopts the two-piece type structure, be the inner chamber that driving gear, driven gear, two floating side plates, two W type seal rings and support plate are installed in the pump housing, the pump housing and pump cover connect to form simply connected or two or multi-gear pump by bolt and locating stud; The gear shaft of described driving gear and driven gear props up by sliding bearing respectively and is contained on the pump housing and the pump cover; Described driving gear is connected with power source by joining shaft, and joining shaft is installed on the pump cover by bearing; Oil outlet and filler opening are arranged on the pump housing; The joint of oil outlet and the pump housing is the zone of high pressure, and the joint of filler opening and the pump housing is low pressure area; Make the circular groove of two symmetries at the inner side surface of described floating side plate; It is characterized in that: described circular groove is shallow type groove gradually, and groove one end and zone of high pressure connect, and the pressure medium in the groove progressively is transitioned into the sub-high pressure district from the zone of high pressure; Described sub-high pressure district connects by the lubricated face of sub-high pressure input oil groove and sliding bearing.
Described circular groove can also be narrow type groove gradually.
Described circular groove can also be both be shallow type groove gradually, was simultaneously narrow type groove gradually.
Good effect of the present invention is:
1, adopt sub-high pressure lubricated to sliding bearing, fuel delivery foot, high lubricating effect.
2, sub-high pressure oil passes through the lubricated face of sliding bearing with certain speed and flow, and bearing surface is heated up to be spread out fast, has effectively solved the bearing irregular wear that temperature rise causes, and improves the working life of bearing.
3, because the sliding bearing long service life makes under high pressure long-term work of gear pump become possibility, the technical performance of gear pump and working life are greatly increased than traditional gear pump.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A--A sectional drawing of Fig. 1.
Among the figure: 1, joining shaft, 2, bearing, 3, pump cover, 4, the pump housing, 5, driving gear, 6, driven gear, 7, bolt, 8, sliding bearing, 9, floating side plate, 10, support plate, 11, W type seal ring, 12, circular groove, 13, sub-high pressure input oil groove, 14, oil outlet, 15, filler opening, 16, zone of high pressure, 17, low pressure area, 18, the sub-high pressure district.
Embodiment
As shown in Figure 1 and Figure 2: a kind of high-pressure gear pump with intermediate-pressure bearing lubricating function, this gear pump adopts the two-piece type structure, be the inner chamber that driving gear 5, driven gear 6, two floating side plates 9, two W type seal rings (11) and support plates (10) are installed in the pump housing 4, the pump housing 4 and pump cover 3 connect to form simply connected or two or multi-gear pump by bolt 7 and locating stud; The gear shaft of described driving gear 5 and driven gear 6 is installed on the pump housing 4 and the pump cover 3 by sliding bearing 8 respectively; Described driving gear 5 is connected with power source by joining shaft 1, and joining shaft 1 is installed on the pump cover 3 by bearing 2; Oil outlet 14 and filler opening 15 are arranged on the pump housing 4; Oil outlet 14 is zone of high pressure 16 with the pump housing 4 joints, and filler opening 15 is low pressure area 17 with the pump housing 4 joints; Make the circular groove 12 of two symmetries at the inner side surface of described floating side plate 9; It is characterized in that: described circular groove 12 is shallow type groove gradually, and groove one end and zone of high pressure 16 connect, and the pressure medium in the groove 16 progressively is transitioned into sub-high pressure district 18 from the zone of high pressure; Described sub-high pressure district 18 connects by the lubricated face of sub-high pressure input oil groove 13 with sliding bearing 8.The lubricated face of sliding bearing 8 is constantly flow through in sub-high pressure oil sources source, and lubricating bearings can spread out the bearing surface intensification again fast effectively, has effectively solved the bearing irregular wear that temperature rise causes, and improves the working life of bearing.Because sliding bearing 8 long service life make under high pressure long-term work of gear pump become possibility, the technical performance of gear pump and working life are greatly increased than traditional gear pump.Described circular groove 12 can also be narrow type groove gradually, can also be both be shallow type groove gradually, is simultaneously narrow type groove gradually.The shape and size of circular groove 12 determine according to the technical order of high-pressure gear pump, its objective is that to make sub-high pressure district 18 oil pressure suitable to sliding bearing 8 lubricated face charge oil pressures and flow, fuel delivery foot and but, high lubricating effect is not damaged again bearing.

Claims (3)

1. high-pressure gear pump with intermediate-pressure bearing lubricating function, this gear pump adopts the two-piece type structure, be the inner chamber that driving gear (5), driven gear (6), two floating side plates (9), two W type seal rings (11) and support plate (10) are installed in the pump housing (4), the pump housing (4) and pump cover (3) connect to form simply connected or two or multi-gear pump by bolt (7) and locating stud; The gear shaft of described driving gear (5) and driven gear (6) is installed on the pump housing (4) and the pump cover (3) by sliding bearing (8) respectively; Described driving gear (5) is connected with power source by joining shaft (1), and joining shaft (1) is installed on the pump cover (3) by bearing (2); Oil outlet (14) and filler opening (15) are arranged on the pump housing (4); Oil outlet (14) is zone of high pressure (16) with the joint of the pump housing (4), and filler opening (15) is low pressure area (17) with the joint of the pump housing (4); Make the circular groove (12) of two symmetries at the inner side surface of described floating side plate (9); It is characterized in that: described circular groove (12) is shallow type groove gradually, and groove one end and zone of high pressure (16) connect, and (16) progressively are transitioned into sub-high pressure district (18) to the pressure medium in the groove from the zone of high pressure; Described sub-high pressure district (18) connects by the lubricated face of sub-high pressure input oil groove (13) with sliding bearing (8).
2. the high-pressure gear pump with intermediate-pressure bearing lubricating function according to claim 1 is characterized in that: described circular groove (12) can also be narrow type groove gradually.
3. the high-pressure gear pump with intermediate-pressure bearing lubricating function according to claim 1 is characterized in that: described circular groove (12) can also be both be shallow type groove gradually, was simultaneously narrow type groove gradually.
CN 201110100439 2011-04-13 2011-04-13 High-pressure gear pump with intermediate-pressure bearing lubrication Expired - Fee Related CN102141035B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110100439 CN102141035B (en) 2011-04-13 2011-04-13 High-pressure gear pump with intermediate-pressure bearing lubrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110100439 CN102141035B (en) 2011-04-13 2011-04-13 High-pressure gear pump with intermediate-pressure bearing lubrication

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CN102141035A CN102141035A (en) 2011-08-03
CN102141035B true CN102141035B (en) 2013-04-24

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206375A (en) * 2013-04-08 2013-07-17 同济大学 Novel floating side plate for high-pressure large-displacement gear pump
CN103498794A (en) * 2013-09-03 2014-01-08 同济大学 Asymmetric floating side plate for a high-pressure large-displacement gear pump
CN107605725B (en) * 2017-10-11 2019-05-21 中国航发西安动力控制科技有限公司 A kind of external gear rotary pump side plate
CN112639290B (en) * 2018-11-26 2021-10-08 住友精密工业株式会社 Internal gear pump
CN113374686A (en) * 2021-07-12 2021-09-10 江南大学 Thrust plate of high-pressure gear pump and design method of compensation oil groove of thrust plate

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85109201A (en) * 1985-11-17 1987-06-03 杨德贵 The radial equilibrium oil hydraulic pump (motor) of special-shaped dynamic and hydrostatic bearing
CN2172360Y (en) * 1993-05-27 1994-07-20 程安强 Middle-saeled gear pump
CN2420443Y (en) * 2000-05-08 2001-02-21 青州液压件厂有限公司 Double axial seal compensating high pressure gear pump
CN2668891Y (en) * 2003-12-25 2005-01-05 山东润光液压科技股份有限公司 Improved axial-sealed compensative gear pump
CN101012757A (en) * 2006-10-18 2007-08-08 阜新北鑫星液压有限公司 Axial lateral plate of bidirectional hydraulic gear oil pump and motor
CN202007778U (en) * 2011-04-13 2011-10-12 徐州科源液压有限公司 High-pressure gear pump with intermediate-pressure bearing lubricating function

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85109201A (en) * 1985-11-17 1987-06-03 杨德贵 The radial equilibrium oil hydraulic pump (motor) of special-shaped dynamic and hydrostatic bearing
CN2172360Y (en) * 1993-05-27 1994-07-20 程安强 Middle-saeled gear pump
CN2420443Y (en) * 2000-05-08 2001-02-21 青州液压件厂有限公司 Double axial seal compensating high pressure gear pump
CN2668891Y (en) * 2003-12-25 2005-01-05 山东润光液压科技股份有限公司 Improved axial-sealed compensative gear pump
CN101012757A (en) * 2006-10-18 2007-08-08 阜新北鑫星液压有限公司 Axial lateral plate of bidirectional hydraulic gear oil pump and motor
CN202007778U (en) * 2011-04-13 2011-10-12 徐州科源液压有限公司 High-pressure gear pump with intermediate-pressure bearing lubricating function

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Owner name: XUZHOU KEYUAN HYDRAULICS CO., LTD.

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Address after: Ganjiang road Copper Mt. District 221116 Jiangsu city of Xuzhou province No. 6

Patentee after: Xuzhou Keyuan Hydraulics Co., Ltd.

Address before: Ganjiang road Copper Mt. District 221116 Jiangsu city of Xuzhou Province, No. 6

Patentee before: Xuzhou Keyuan Hydraulic Co., Ltd.

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Granted publication date: 20130424

Termination date: 20160413