CN201891601U - Internal meshing gear oil pump - Google Patents

Internal meshing gear oil pump Download PDF

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Publication number
CN201891601U
CN201891601U CN2010206510946U CN201020651094U CN201891601U CN 201891601 U CN201891601 U CN 201891601U CN 2010206510946 U CN2010206510946 U CN 2010206510946U CN 201020651094 U CN201020651094 U CN 201020651094U CN 201891601 U CN201891601 U CN 201891601U
Authority
CN
China
Prior art keywords
oil
gear
pump
external gear
internal
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 - Lifetime
Application number
CN2010206510946U
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Chinese (zh)
Inventor
许仲秋
刘光明
徐建明
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.)
Hunan Oil Pump Co Ltd
Original Assignee
Hunan Oil Pump 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 Hunan Oil Pump Co Ltd filed Critical Hunan Oil Pump Co Ltd
Priority to CN2010206510946U priority Critical patent/CN201891601U/en
Application granted granted Critical
Publication of CN201891601U publication Critical patent/CN201891601U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

An internal meshing gear oil pump comprises a pump body 1, a pump cover 2, an internal gear 3, an external gear 4 and a transmission shaft 5, wherein the middle of the transmission shaft 5 is in interference fit with the external gear 4 and is completely arranged in a gear hole and shaft holes of the pump body 1 and the pump cover 2 with the internal gear 3; a crescent separation panel 6 which is integrated with the pump body 1 is arranged in an eccentricity space mutually formed by an external gear hole and an internal gear hole in the inner chamber of the pump body 1; and the separation panel 6 is not only a channel for the separation for lubricating oil transportation and oil transportation in the chambers of the internal gear 3 and the external gear 4, but also the separation device for separating an oil outlet chamber and an oil inlet chamber and preventing the back flow of pressure oil. Due to the adoption of the design, compared with the prior art, the internal meshing gear oil pump has the characteristics of simple structure, low noise, stable oil transportation, strong self-priming capability, high lubricating efficiency, good lubricating effect, good low-high rotation speed characteristic and the like; and besides, the lubricating efficiency and quality are improved, and the safety, reliability and service life of the oil pump are greatly improved.

Description

The inside engaged gear oil pump
Technical field
The utility model relates to a kind of oil pump of engineering machinery gearbox lubrication system, particularly a kind of inside engaged gear oil pump.
Background technique
The oil pump of existing engineering machinery gearbox lubrication system is used a kind of lubricating systems such as formula, drip irrigation type or cycloid rotor pump that splash, and its lubricating efficiency is low, lubrication effect is poor, parts friction ractor height causes the irregular wear of part, has reduced the working efficiency of gear-box.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency that overcomes prior art, and provide a kind of simple in structure, oil transportation is steady, lubricating efficiency is high, the inside engaged gear oil pump of high lubricating effect, to improve lubricating efficiency and lubricating quality, the working life of improving Security, reliability and the gear-box of lubrication system.
The technical solution of the utility model is: a kind of inside engaged gear oil pump, comprise the pump housing, pump cover, internal gear, external gear and transmission shaft, transmission shaft middle part with external gear interference be connected and with the complete axis hole that is installed in gear hole and the pump housing, pump cover of internal gear in, in the throw of eccentric space that the external gear hole and the internal gear hole of pump housing inner chamber form mutually, be provided with the crescent shape isolating plate.
The further technological scheme of the utility model is: circular arc line and external gear tip circle precision in order to leaking of obstruct external gear tooth cavity inner engine oil, and are transported to out oil pocket with machine oil from oil suction chamber movingly in the isolating plate; Isolating plate cylindrical camber line and internal gear teeth tip circle precision in order to intercept leaking of internal gear tooth cavity inner engine oil, are transported to out oil pocket with machine oil from oil suction chamber movingly.
The utility model further technological scheme is: the crescent shape isolating plate is connected with the pump housing is whole.
The utility model further technological scheme is: crescent shape isolating plate and pump housing global formation.
The utility model is owing to adopt as above design, compared with prior art, have simple in structure, characteristics such as noise is low, oil transportation is steady, self-priming performance is strong, lubricating efficiency is high, high lubricating effect, good low high rotary speed property is arranged, improved lubricating efficiency and lubricating quality, Security, reliability and the working life of oil pump are increased substantially.
Below in conjunction with the drawings and specific embodiments detailed content of the present utility model is further described.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Shown in Fig. 1-2, a kind of inside engaged gear oil pump, comprise the pump housing 1, pump cover 2, internal gear 3, external gear 4 and transmission shaft 5, transmission shaft 5 middle parts with external gear 4 interference be connected and with the internal gear 3 complete gear hole and the pump housings 1 of being installed in, in the axis hole of pump cover 2, in the throw of eccentric space that the external gear hole and the internal gear hole of the pump housing 1 inner chamber form mutually, be provided with crescent shape isolating plate 6 with the pump housing 1 global formation, isolating plate 6 is a passage of bearing internal gear 3 and external gear 4 both tooth cavities conveying lubricant oil isolation and oil transportation, simultaneously also be to intercept out isolation mounting oil pocket and oil suction chamber and that prevent the pressure oil backflow, circular arc line and external gear 4 tip circle precisions are movingly in the isolating plate 6, in order to leaking of obstruct external gear 4 tooth cavity inner engine oils, and machine oil is transported to out oil pocket from oil suction chamber; Isolating plate 4 cylindrical camber lines and internal gear 3 top circle precisions in order to intercept leaking of internal gear 3 tooth cavity inner engine oils, are transported to out oil pocket with machine oil from oil suction chamber movingly.

Claims (4)

1. inside engaged gear oil pump, comprise the pump housing, pump cover, internal gear, external gear and transmission shaft, transmission shaft middle part with external gear interference be connected and with the complete axis hole that is installed in gear hole and the pump housing, pump cover of internal gear in, be provided with the crescent shape isolating plate in the throw of eccentric space that it is characterized in that forming mutually in the external gear hole and the internal gear hole of pump housing inner chamber.
2. inside engaged gear oil pump according to claim 1 is characterized in that interior circular arc line of isolating plate and external gear tip circle precision movingly, in order to leaking of obstruct external gear tooth cavity inner engine oil, and machine oil is transported to out oil pocket from oil suction chamber; Isolating plate cylindrical camber line and internal gear teeth tip circle precision in order to intercept leaking of internal gear tooth cavity inner engine oil, are transported to out oil pocket with machine oil from oil suction chamber movingly.
3. inside engaged gear oil pump according to claim 1 and 2 is characterized in that the crescent shape isolating plate and pump housing integral body is connected.
4. inside engaged gear oil pump according to claim 1 and 2 is characterized in that crescent shape isolating plate and pump housing global formation.
CN2010206510946U 2010-12-02 2010-12-02 Internal meshing gear oil pump Expired - Lifetime CN201891601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206510946U CN201891601U (en) 2010-12-02 2010-12-02 Internal meshing gear oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206510946U CN201891601U (en) 2010-12-02 2010-12-02 Internal meshing gear oil pump

Publications (1)

Publication Number Publication Date
CN201891601U true CN201891601U (en) 2011-07-06

Family

ID=44221076

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206510946U Expired - Lifetime CN201891601U (en) 2010-12-02 2010-12-02 Internal meshing gear oil pump

Country Status (1)

Country Link
CN (1) CN201891601U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022319A (en) * 2010-12-02 2011-04-20 湖南机油泵股份有限公司 Oil pump with inside engaged gear
CN103225607A (en) * 2012-01-25 2013-07-31 罗伯特·博世有限公司 Internal gear pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022319A (en) * 2010-12-02 2011-04-20 湖南机油泵股份有限公司 Oil pump with inside engaged gear
CN103225607A (en) * 2012-01-25 2013-07-31 罗伯特·博世有限公司 Internal gear pump
CN103225607B (en) * 2012-01-25 2017-04-26 罗伯特·博世有限公司 Internal gear pump

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GR01 Patent grant
CX01 Expiry of patent term
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Granted publication date: 20110706