CN2751161Y - Hydraulic gear pump - Google Patents

Hydraulic gear pump Download PDF

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Publication number
CN2751161Y
CN2751161Y CN 200420121252 CN200420121252U CN2751161Y CN 2751161 Y CN2751161 Y CN 2751161Y CN 200420121252 CN200420121252 CN 200420121252 CN 200420121252 U CN200420121252 U CN 200420121252U CN 2751161 Y CN2751161 Y CN 2751161Y
Authority
CN
China
Prior art keywords
pump
plate
gear
leakage
gear pump
Prior art date
Application number
CN 200420121252
Other languages
Chinese (zh)
Inventor
韩永进
徐云涛
刘洪森
林国英
徐世维
Original Assignee
徐州科源液压有限公司
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 徐州科源液压有限公司 filed Critical 徐州科源液压有限公司
Priority to CN 200420121252 priority Critical patent/CN2751161Y/en
Application granted granted Critical
Publication of CN2751161Y publication Critical patent/CN2751161Y/en

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Abstract

The utility model relates to a hydraulic gear pump from single link to multiple link. The gear pump is composed of a front pump cover arranged on the left, a pump body arranged in the middle, and a pump body arranged on the right which are fixedly connected to form a whole, a pump cavity in the pump body is respectively provided with double-link meshed driving gears and driven gears in parallel, and both end faces of the driving gears and driven gears, which are appressed with a fixed side plate, are respectively provided with a floating side plate; the hydraulic gear pump can reduce the leakage of an end face, and enhances volumetric efficiency; the interstice between the pump cavity of the pump body, and the gear tops of the driving gears and driven gears is controlled between 0.03mm and 0.01mm, the leakage is reduced, and the volumetric efficiency is further enhanced; the pressure angle between the driving gears and driven gears is enlarged to 31 DEG, and the packeted oil area is reduced. The hydraulic gear pump has the advantages of no leakage of the end face, little leakage of the peak, low temperature of lubrication oil, light total weight, strong strength, long service life and less noise.

Description

A kind of hydraulic gear pump
Affiliated technical field
The utility model relates to a kind of gear pump, especially singly links a kind of hydraulic gear pump that connects more.
Background technique
At present, the conventional hydraulic gear pump exists end face to have leakage and peak to leak the defective that big, the whole pump housing is heavier, volumetric efficiency is low, bearing load is big, noise reaches the life-span weak point greatly more, does not also have good solution at present.
Summary of the invention
In order to overcome the shortcoming of present hydraulic gear pump, the utility model provides a kind of hydraulic gear pump, and this pump has end surface no-leakage, peak leaks the advantage that temperature is also low, overall weight is light, intensity is big, the life-span is long and noise is little extremely low, lubricant oil.
The scheme that its technical problem that solves the utility model adopts is: this gear pump is fixedly connected into an integral body by the front pump cover (1) on the left side, the pump housing (4) of centre and the pump housing (10) on the right, in its inner pump chamber, the parallel respectively active gear teeth (5), (12) and the driven gear teeth (7), (13) that the duplex engagement is installed, it is characterized in that: on the end face on the both sides of active, driven gear (5), (12), (7), (13), be close to fixed lateral plate, be separately installed with floating side plate (3), (6), (9), (11); Floating side plate (3), (6), (9), (11) under the effect of high pressure oil, closely contact with gear face overleaf all the time, can reduce face leakage, improve volumetric efficiency; Gap control between the pump chamber wall of the pump housing (4), (10) and driving and driven gear (5), (12), (7), (13) tooth top is between 0.03mm~0.01mm; Make the space minimum of gear pump peak when work, can reduce to minimum to leakage, can further improve volumetric efficiency; Pressure angle between driving and driven gear (5), (12), (7), (13) is increased to 31 °, can dwindle the pocketed oil area.
Its beneficial effect is: this gear pump has end surface no-leakage, and peak leaks extremely low, and the temperature of lubricant oil is also low, and overall weight is light, and intensity is big, the advantage that the life-span is long and noise is little.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and the embodiments:
Accompanying drawing is a structural principle schematic representation of the present utility model;
Among the figure, 1 front pump cover, 2 fixed lateral plates, 3 floating side plates, 4 pump housings, 5 driving gears, 6 floating side plates, 7 driven gears, 8 fixed lateral plates, 9 floating side plates, 10 pump housings, 11 floating side plates, 12 driving gears, 13 driven gears.
Embodiment:
In the drawings, on the face of front pump cover (1), be processed with two bearing holes and two positioning pin holes, another side is processed with oil sealing hole, and it communicates with a bearing hole; On the pump housing (4), (10), all be processed with bearing hole, gear mounting hole and positioning pin hole.
In the drawings, the surface of floating side plate (3), (6), (9), (11), sintering has high-abrasive material, the back side of floating side plate is fixed lateral plate, be processed with W shape seal groove on its faying surface, W shape seal ring and sealing support strip are housed in the groove, and it is divided into high and low nip to pump chamber, and axial clearance is compensated automatically.

Claims (2)

1. hydraulic gear pump, this gear pump is fixedly connected into an integral body by the front cover (1) on the left side, the pump housing (4) of centre and the pump housing (10) on the right, in its inner pump chamber, the parallel respectively active gear teeth (5), (12) and the driven gear teeth (7), (13) that the duplex engagement is installed, it is characterized in that: on the end face on the both sides of active, driven gear (5), (12), (7), (13), be close to fixed lateral plate, be separately installed with floating side plate (3), (6), (9), (11); Between the tooth top of the pump chamber wall of the pump housing (4), (10) and driving and driven gear (5), (12), (7), (13), gap control between 0.03mm~0.01mm; Pressure angle between driving and driven gear (5), (12), (7), (13) is increased to 31 °.
2. a kind of hydraulic gear pump according to claim 1, it is characterized in that: the surface of floating side plate (3), (6), (9), (11), sintering has high-abrasive material, the back side of floating side plate is fixed lateral plate, be processed with W shape seal groove on its faying surface, W shape seal ring and sealing support strip are housed in the groove.
CN 200420121252 2004-12-31 2004-12-31 Hydraulic gear pump CN2751161Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420121252 CN2751161Y (en) 2004-12-31 2004-12-31 Hydraulic gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420121252 CN2751161Y (en) 2004-12-31 2004-12-31 Hydraulic gear pump

Publications (1)

Publication Number Publication Date
CN2751161Y true CN2751161Y (en) 2006-01-11

Family

ID=35932337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420121252 CN2751161Y (en) 2004-12-31 2004-12-31 Hydraulic gear pump

Country Status (1)

Country Link
CN (1) CN2751161Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102128165A (en) * 2011-03-27 2011-07-20 长治液压有限公司 Dual-oil inlet hydraulic gear pump
CN102155401A (en) * 2011-03-26 2011-08-17 长治液压有限公司 High-pressure large-flow dual-united gear pump
CN102155402A (en) * 2011-03-26 2011-08-17 长治液压有限公司 Double-oil-outlet speed variable gear pump
CN102562575A (en) * 2010-12-01 2012-07-11 日立汽车系统株式会社 External gear pump
CN103629110A (en) * 2012-08-24 2014-03-12 无锡市东方液压件制造有限公司 Dual-gear oil pump compensating axial clearance by side plates
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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562575A (en) * 2010-12-01 2012-07-11 日立汽车系统株式会社 External gear pump
CN102562575B (en) * 2010-12-01 2015-05-13 日立汽车系统株式会社 External gear pump
CN102155401A (en) * 2011-03-26 2011-08-17 长治液压有限公司 High-pressure large-flow dual-united gear pump
CN102155402A (en) * 2011-03-26 2011-08-17 长治液压有限公司 Double-oil-outlet speed variable gear pump
CN102128165A (en) * 2011-03-27 2011-07-20 长治液压有限公司 Dual-oil inlet hydraulic gear pump
CN103629110A (en) * 2012-08-24 2014-03-12 无锡市东方液压件制造有限公司 Dual-gear oil pump compensating axial clearance by side plates
CN103629110B (en) * 2012-08-24 2016-04-13 无锡市东方液压件制造有限公司 A kind of double-gear oil pump of side plate axial clearance compensation
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

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CB03 Change of inventor or designer information

Designer after: Han Yongjin

Designer after: Xu Yuntao

Designer after: Liu Hongsen

Designer after: Lin Guoying

Designer after: Yuan Shiwei

Designer before: Han Yongjin

Designer before: Xu Yuntao

Designer before: Liu Hongsen

Designer before: Lin Guoying

Designer before: Xu Shiwei

C53 Correction of patent for invention or patent application
COR Change of bibliographic data

Free format text: CORRECT: DESIGNER; FROM: HAN YONGJIN; XU YUNTAO; LIU HONGSEN; LIN GUOYING; XU SHIWEI TO: HAN YONGJIN; XU YUNTAO; LIU HONGSEN; LIN GUOYING; YUAN SHIWEI

CP03 Change of name, title or address

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

Patentee after: Xuzhou Keyuan Hydraulics Co., Ltd.

Address before: 221006 No. 6 middle mining road, Jiangsu, Xuzhou

Patentee before: Xuzhou Keyuan Hydraulic Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: XUZHOU KEYUAN HYDRAULICS CO., LTD.

Free format text: FORMER NAME: XUZHOU KEYUAN HYDRAULIC CO., LTD.

CX01 Expiry of patent term

Expiration termination date: 20141231

Granted publication date: 20060111

C17 Cessation of patent right