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WO2009044491A1 - Gear pump - Google Patents

Gear pump Download PDF

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Publication number
WO2009044491A1
WO2009044491A1 PCT/JP2007/069638 JP2007069638W WO2009044491A1 WO 2009044491 A1 WO2009044491 A1 WO 2009044491A1 JP 2007069638 W JP2007069638 W JP 2007069638W WO 2009044491 A1 WO2009044491 A1 WO 2009044491A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
housings
gear pump
particles
gear
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.)
Ceased
Application number
PCT/JP2007/069638
Other languages
French (fr)
Japanese (ja)
Inventor
Tateyuki Shimamura
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.)
KYB Corp
Original Assignee
Kayaba Industry 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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to CN200780100686A priority Critical patent/CN101802406A/en
Priority to KR1020107009603A priority patent/KR20100083157A/en
Priority to US12/733,808 priority patent/US20100202913A1/en
Priority to JP2009535948A priority patent/JPWO2009044491A1/en
Priority to PCT/JP2007/069638 priority patent/WO2009044491A1/en
Priority to EP07829376A priority patent/EP2202410A1/en
Publication of WO2009044491A1 publication Critical patent/WO2009044491A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/70—Safety, emergency conditions or requirements

Definitions

  • the present invention relates to a gear pump that discharges fluid by rotating while a pair of gears are engaged with each other.
  • a gear pump provided in a hydraulic device, a hydraulic device or the like includes a body in which a pair of gears are incorporated and a housing in contact with the body, and the body and the housing are fastened by a plurality of bolts.
  • the fluid pressure generated in the body when the gear pump is activated generates a force that moves the housing in one direction relative to the body.
  • a gap may be formed between the body and the housing, and fluid may leak from the gear pump.
  • an object of the present invention is to provide a gear pump that prevents displacement of the body and the housing without increasing the depth of machining cut on the end face of the body.
  • the present invention is a gear pump that discharges a fluid by rotating while a pair of gears mesh, and includes a body in which each gear is incorporated, a housing in contact with the body, an end face of the body in contact with the body, and a housing. Body and housing interposed between end faces And a plurality of fastening members for fastening housing to the body.
  • a large number of fine particles are interposed between the end surface of the body and the end surface of the housing, and by increasing the frictional force of the joint portion, the fluid pressure in the gear pump causes the space between the body and the housing. It is possible to effectively prevent the position shift from occurring and maintain the pump efficiency of the gear pump.
  • FIG. 1 is a longitudinal sectional view showing a gear pump according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the gear pump 1 includes a body 2 in which a drive gear 11 and a driven gear 12 are incorporated as a pair of gears, and housings 3 and 4 that contact the body 2 from both sides. Side plates 5 and 6 are interposed between both end faces of the drive gear 1 1 and the driven gear 1 2 and the housings 3 and 4.
  • the body 2 has a gear chamber 9 for accommodating the drive gear 11 and the driven gear 12 inside thereof, and the housings 3 and 4 are in contact with both end faces 25 and 26 of the body 2.
  • the housing 3 has an end surface 28 that is in contact with the end surface 25 of the body 2, closes one end of the body 2, and functions as a mounting flange that is attached to a support member (not shown).
  • a seal ring 41 is interposed between the end face 25 of the body 2 and the housing 3, and the gear chamber 9 is sealed by the seal ring 41.
  • the housing 3 may be formed integrally with the body 2.
  • the housing 4 has an end face 29 that contacts the end face 26 of the body 2, and functions as a cover that closes the other end of the body 2.
  • a seal 42 is interposed between the end face 26 of the body 2 and the housing 4, and the gear chamber 9 is sealed by the seal 42.
  • the body 2 and the housings 3 and 4 are fastened by four ports 17 to 20.
  • the bolts 17 to 20 provided as fastening members are pressed against each other by the axial force between the end surface 25 of the body 2 and the end surface 28 of the housing 3, and the end surface 26 of the body 2 and the housing 4.
  • the end faces 29 of each other are pressed against each other. Accordingly, the body 2 and the housings 3 and 4 are fixed by the frictional force generated between the end surfaces 25 and 28 and the frictional force generated between the end surfaces 26 and 29.
  • Shafts 13 and 15 are formed at both ends of the drive gear 11.
  • Shafts 14 and 16 are formed at both ends of the driven gear 1 2.
  • the shafts 1 3 and 14 are rotatably supported by the housing 3 via bearings 3 3 and 3 4.
  • the shafts 15 and 16 are rotatably supported by the cover 4 via bearings 3 5 and 3 6.
  • the shaft 15 of the drive gear 11 is rotated in the clockwise direction as shown by the arrow in FIG. 2, and the shaft 16 of the driven gear 12 rotates in the counterclockwise direction as shown by the arrow in FIG.
  • the fluid sucked in from the low pressure port 2 3 located in the tangential direction of the mating surface becomes the drive gear 1 1 and the driven gear. 1 Carried by the gear meshing part of 2 and discharged from the high pressure port 2 2 ports.
  • hydraulic fluid is used as the fluid circulating through the gear pump 1.
  • a machining hole 27 is formed on the end surface 26 of the body 2.
  • a processed hole 27 is formed on the end face 26 of the body 2.
  • This process 27 consists of a large number of thin grooves cut by a milling machine.
  • the processed stitches 27 are formed so as to extend in the longitudinal direction substantially perpendicular to the sliding direction indicated by the arrow B in FIG.
  • the processed stitches 27 are not limited to this, and may be formed in a mesh shape, for example.
  • the body 2 is formed of a material having higher hardness than the housings 3 and 4.
  • Body 2 is an example
  • the housings 3 and 4 are made of, for example, an aluminum material.
  • the machining depth 27 of the end faces 25, 26 of the body 2 is small, the displacement of the housings 3, 4 cannot be prevented sufficiently.
  • the machining depth 27 is large, a gap may be formed between the body 2 and the housings 3 and 4, and fluid leakage from the gear pump 1 may occur.
  • the present invention allows a large number of fine particles 30 to be interposed at the joint between the body 2 and the housings 3 and 4, so that the body 2 7 can be manufactured without increasing the depth of machining. And the housing 3 and 4 are prevented from being displaced.
  • the particles 30 are made of, for example, cutting powder such as steel, pig iron, or carbon, and have a higher hardness than those of the body 2 and the housings 3 and 4.
  • the particles 3 0 bite into the end surfaces 2 5 and 2 6 of the body 2 and the end surfaces 2 8 and 2 9 of the housing 3 and 4, respectively, and the body 2 and the housings 3 and 4 It is possible to increase the frictional force along the joints and effectively prevent displacement between each other.
  • Particles 30 are mixed in coating agent 31 and applied to both end faces 25, 26 of body 2 together with coating agent 31.
  • the coating agent 31 adheres to the joint between the body 2 and the housings 3 and 4 to eliminate gaps and prevent corrosion such as electrolytic corrosion.
  • the present invention is a gear pump 1 that rotates and discharges fluid while the drive gear 1 1 and the driven gear 1 2 are engaged with each other, and the body 2 in which the drive gear 1 1 and the driven gear 1 2 are incorporated.
  • the housings 3 and 4 in contact with the body 2 and the end surfaces 2 5 and 2 6 of the body 2 in contact with each other and the end surfaces 2 8 and 2 9 of the housing 3 and 4, and the body 2 and the housings 3 and 4 A large number of particles 30 that prevent misalignment, and multiple bolts (fastening members) that fasten the housings 3 and 4 to the body 2 2 0.
  • a large number of particles 30 are interposed between the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4, so that the body 2 and the housings 3 and 4 are driven by the fluid pressure in the gear pump 1. Therefore, it is possible to effectively prevent the displacement along the joint between the two and the pump efficiency of the gear pump 1 can be maintained.
  • the particles 30 are formed of a material having a higher hardness than the body 2 and the housings 3 and 4.
  • a machining mark 27 is formed on at least one of the end faces 25, 26 of the body 2 and the end faces 28, 29 of the housings 3, 4, and the particles 30 and the machining marks 27 are interposed therebetween.
  • the body 2 and the housings 3 and 4 are positioned by the machining marks 2 7 and are also positioned by the particles 30, so that even if the machining depth of the machining marks 2 7 is reduced, the housing 3, The position shift of 4 can be sufficiently prevented. As a result, it is possible to reduce the cutting depth of the machining stitch 27 and prevent the fluid from leaking between the body 2 and the housings 3 and 4.
  • the particles 30 are mixed with the coating agent 3 1, and the particles together with the coating agent 3 1 are applied to at least one of the end surfaces 2 5 and 2 6 of the body 2 and the end surfaces 2 8 and 2 9 of the housing 3 and 4. 3 Apply 0.
  • the particles 30 can be uniformly distributed on the end faces 2 5 and 2 6 of the body 2 or the end faces 2 8 and 2 9 of the housings 3 and 4, so that the body 2 and the housing can be separated by the fluid pressure in the gear pump 1. It is possible to effectively prevent displacement between 3 and 4.
  • the particles 30 are formed of a material whose hardness is lower than that of the body 2 and the housings 3 and 4, and compressed between the body 2 and the housings 3 and 4. It is also possible to increase the frictional force through particles 30.
  • both the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4 are formed smoothly so that the body 2 and the housing 3 can be used without using the machining holes 2 7. , 4 may be positioned only by the particles 30.
  • the gear pump according to the present invention is suitable for a pump provided in a hydraulic device, a hydraulic device or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

A gear pump (1) discharges a fluid by rotation of a pair of gears (11, 12) meshing with each other. The gear pump (1) comprises a body (2) into which the gears (11, 12) are built, housings (3, 4) touching the body (2), many particles (30) interposed between end faces (25, 26) of the body (2) and end faces (28, 29) of the housings (3, 4) which touch each other for preventing the positional displacement between the body (2) and the housings (3, 4), and fastening members (17 to 20) for fastening the housings (3, 4) to the body (2).

Description

明細書  Specification

ギヤポンプ  Gear pump

技術分野  Technical field

この発明は、 一対のギヤが嚙み合いながら回転して流体を吐出するギヤポンプ に関する。 背景技術  The present invention relates to a gear pump that discharges fluid by rotating while a pair of gears are engaged with each other. Background art

油圧装置や水圧装置等に設けられるギヤポンプは、 一対のギヤが組み込まれる ボディと、 このボディに接するハウジングとを備え、 ボディとハウジングが複数 のボルトによって締結されている。  A gear pump provided in a hydraulic device, a hydraulic device or the like includes a body in which a pair of gears are incorporated and a housing in contact with the body, and the body and the housing are fastened by a plurality of bolts.

ギヤポンプの作動時にボディ内に生じる流体圧力によりボディに対してハウジ ングを一方向に移動させようとする力が生じる。  The fluid pressure generated in the body when the gear pump is activated generates a force that moves the housing in one direction relative to the body.

従来のギヤポンプとして、特開平 6 _ 1 4 7 1 3 3号公報に開示されたものは、 ボディのハウジングに接する端面に加工目が形成される。 ボディとハウジングと を複数のポルトで締結すると、 ボディの端面に刻まれた筋状の加工目がハウジン グの端面に食い込み、 ボディとハウジングとの位置ずれを防止するようになって いる。 発明の開示  As a conventional gear pump, what is disclosed in Japanese Patent Laid-Open No. 6_1 4 7 1 3 3 is formed with a machined surface on an end surface of the body contacting the housing. When the body and housing are fastened at multiple ports, streaks cut into the end face of the body bite into the end face of the housing to prevent displacement of the body and housing. Disclosure of the invention

しかしながら、 ボディの端面に刻まれる加工目は、 その削り深さが小さいと、 ボディとハウジングとの位置ずれを十分に防止できない。  However, if the machining depth carved on the end face of the body is small, the displacement between the body and the housing cannot be prevented sufficiently.

一方、加工目の削り深さが大きいと、ボディとハウジングとの間に隙間が生じ、 ギヤポンプから流体が洩る可能性がある。  On the other hand, if the machining depth is large, a gap may be formed between the body and the housing, and fluid may leak from the gear pump.

従って、 本発明は、 ボディの端面に刻まれる加工目の削り深さを大きくするこ となく、 ボディとハウジングとの位置ずれを防止するギヤポンプを提供すること を目的とする。  Accordingly, an object of the present invention is to provide a gear pump that prevents displacement of the body and the housing without increasing the depth of machining cut on the end face of the body.

本発明は、 一対のギヤが嚙み合いながら回転して流体を吐出するギヤポンプで あって、 各ギヤが組み込まれるボディと、 このボディに接するハウジングと、 互 レ、に接するボディの端面とハウジングの端面との間に介在しボディとハウジング との位置ずれを防止する多数の粒子と、 ボディにハゥジングを締結する複数の締 結部材とを備えることを特徴とする。 The present invention is a gear pump that discharges a fluid by rotating while a pair of gears mesh, and includes a body in which each gear is incorporated, a housing in contact with the body, an end face of the body in contact with the body, and a housing. Body and housing interposed between end faces And a plurality of fastening members for fastening housing to the body.

本発明によれば、 ボディの端面とハウジングの端面との間に多数の微細な粒子 が介在し、 互いの接合部の摩擦力を高めることにより、 ギヤポンプ内の流体圧力 によってボディとハウジングとの間に位置ずれが生じることを有効に防止でき、 ギヤポンプのポンプ効率を維持できる。 図面の簡単な説明  According to the present invention, a large number of fine particles are interposed between the end surface of the body and the end surface of the housing, and by increasing the frictional force of the joint portion, the fluid pressure in the gear pump causes the space between the body and the housing. It is possible to effectively prevent the position shift from occurring and maintain the pump efficiency of the gear pump. Brief Description of Drawings

図 1は、 本発明の実施の形態のギヤポンプを示す縦断面図である。  FIG. 1 is a longitudinal sectional view showing a gear pump according to an embodiment of the present invention.

図 2は、 図 1の A— A線に沿う断面図である。 発明を実施するための最良の形態  FIG. 2 is a cross-sectional view taken along line AA in FIG. BEST MODE FOR CARRYING OUT THE INVENTION

以下、 図面を参照して、 本発明の実施の形態について説明する。  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図 1に示すように、 ギヤポンプ 1は、 一対のギヤとしてドライブギヤ 1 1、 ド リブンギヤ 1 2が組み込まれるボディ 2と、 このボディ 2に両側から接するハウ ジング 3、 4とを備える。 ドライブギヤ 1 1、 ドリブンギヤ 1 2の両端面とハウ ジング 3、 4との間にはサイドプレート 5、 6が介装される。  As shown in FIG. 1, the gear pump 1 includes a body 2 in which a drive gear 11 and a driven gear 12 are incorporated as a pair of gears, and housings 3 and 4 that contact the body 2 from both sides. Side plates 5 and 6 are interposed between both end faces of the drive gear 1 1 and the driven gear 1 2 and the housings 3 and 4.

ボディ 2は、 その内側にドライブギヤ 1 1、 ドリブンギヤ 1 2を収容するギヤ 室 9を有し、 ボディ 2の両端面 2 5、 2 6にはハウジング 3、 4が接する。 ハウジング 3は、 ボディ 2の端面 2 5に接する端面 2 8を有し、 ボディ 2の一 端を塞ぐとともに、 図示しない支持部材に取り付けられるマウンティングフラン ジとして機能する。  The body 2 has a gear chamber 9 for accommodating the drive gear 11 and the driven gear 12 inside thereof, and the housings 3 and 4 are in contact with both end faces 25 and 26 of the body 2. The housing 3 has an end surface 28 that is in contact with the end surface 25 of the body 2, closes one end of the body 2, and functions as a mounting flange that is attached to a support member (not shown).

ボディ 2の端面 2 5とハウジング 3との間にはシールリング 4 1が介装され、 このシールリング 4 1によってギヤ室 9が密封される。  A seal ring 41 is interposed between the end face 25 of the body 2 and the housing 3, and the gear chamber 9 is sealed by the seal ring 41.

なお、 ハウジング 3をボディ 2と一体に形成してもよい。  The housing 3 may be formed integrally with the body 2.

ハウジング 4は、 ボディ 2の端面 2 6に接する端面 2 9を有し、 ボディ 2の他 端を塞ぐカバーとして機能する。  The housing 4 has an end face 29 that contacts the end face 26 of the body 2, and functions as a cover that closes the other end of the body 2.

ボディ 2の端面 2 6とハウジング 4との間にはシール 4 2が介装され、 このシ ール 4 2によってギヤ室 9が密封される。 ボディ 2とハウジング 3 、 4とは、 4本のポルト 1 7 〜 2 0によって締結され る。 締結部材として設けられる各ボルト 1 7 〜 2 0は、 それぞれの軸力によって ボディ 2の端面 2 5とハウジング 3の端面 2 8とが互いに押し付けられるととも に、 ボディ 2の端面 2 6とハウジング 4の端面 2 9とが互いに押し付けられる。 これにより、 各端面 2 5と端面 2 8間に生じる摩擦力と、 各端面 2 6と端面 2 9 間に生じる摩擦力によってボディ 2とハウジング 3 、 4とが固定される。 A seal 42 is interposed between the end face 26 of the body 2 and the housing 4, and the gear chamber 9 is sealed by the seal 42. The body 2 and the housings 3 and 4 are fastened by four ports 17 to 20. The bolts 17 to 20 provided as fastening members are pressed against each other by the axial force between the end surface 25 of the body 2 and the end surface 28 of the housing 3, and the end surface 26 of the body 2 and the housing 4. The end faces 29 of each other are pressed against each other. Accordingly, the body 2 and the housings 3 and 4 are fixed by the frictional force generated between the end surfaces 25 and 28 and the frictional force generated between the end surfaces 26 and 29.

ドライブギヤ 1 1の両端には軸 1 3 、 1 5が形成される。 ドリブンギヤ 1 2の 両端には軸 1 4 、 1 6が形成される。 各軸 1 3 、 1 4は、 ハウジング 3に軸受 3 3 、 3 4を介して回転自在に支持される。 各軸 1 5 、 1 6は、 カバー 4に軸受 3 5 、 3 6を介して回転自在に支持される。  Shafts 13 and 15 are formed at both ends of the drive gear 11. Shafts 14 and 16 are formed at both ends of the driven gear 1 2. The shafts 1 3 and 14 are rotatably supported by the housing 3 via bearings 3 3 and 3 4. The shafts 15 and 16 are rotatably supported by the cover 4 via bearings 3 5 and 3 6.

ドライブギヤ 1 1の軸 1 5が図 2において矢印で示すように時計回り方向に回 転駆動され、 ドリブンギヤ 1 2の軸 1 6が図 2において矢印で示すように反時計 回り方向に回転する。  The shaft 15 of the drive gear 11 is rotated in the clockwise direction as shown by the arrow in FIG. 2, and the shaft 16 of the driven gear 12 rotates in the counterclockwise direction as shown by the arrow in FIG.

ギア室 9にてドライブギヤ 1 1と ドリブンギヤ 1 2が嚙み合いながら回転する ことにより、 嚙み合い面の接線方向に位置する低圧ポート 2 3から吸い込まれた 流体が、ドライブギヤ 1 1と ドリブンギヤ 1 2のギヤ嚙み合い部によって運ばれ、 高圧ポート 2 2カゝら吐出される。 ギヤポンプ 1を循環する流体としては例えば作 動油が用いられる。  As the drive gear 1 1 and the driven gear 1 2 rotate while meshing with each other in the gear chamber 9, the fluid sucked in from the low pressure port 2 3 located in the tangential direction of the mating surface becomes the drive gear 1 1 and the driven gear. 1 Carried by the gear meshing part of 2 and discharged from the high pressure port 2 2 ports. For example, hydraulic fluid is used as the fluid circulating through the gear pump 1.

上記したギヤポンプ 1の作動時、 高圧ポート 2 2の流体圧力が低圧ポート 2 3 より高くなるため、 ボディ 2に対してハウジング 3 、 4を互いの接合部において 図 2に矢印 Bで示す方向に移動させようとする力が生じる。  When the gear pump 1 is in operation, the fluid pressure in the high pressure port 2 2 is higher than that in the low pressure port 2 3, so the housings 3 and 4 are moved relative to the body 2 in the direction indicated by arrow B in FIG. A force to try to make it happen.

このギヤポンプ 1内に生じる圧力差に抗してボディ 2に対してハウジング 3 、 4を固定するために、 図 2に示すように、 ボディ 2の端面 2 6に加工目 2 7を形 成する。 同様に、 ボディ 2の端面 2 6に加工目 2 7を形成する。  In order to fix the housings 3 and 4 to the body 2 against the pressure difference generated in the gear pump 1, as shown in FIG. 2, a machining hole 27 is formed on the end surface 26 of the body 2. Similarly, a processed hole 27 is formed on the end face 26 of the body 2.

この加工目 2 7は、 フライス盤によって切削加工される多数の細い溝とからな る。 加工目 2 7は、 図 2に矢印 Bで示す滑り方向に対してほぼ直交する縦方向に 延びるように形成される。  This process 27 consists of a large number of thin grooves cut by a milling machine. The processed stitches 27 are formed so as to extend in the longitudinal direction substantially perpendicular to the sliding direction indicated by the arrow B in FIG.

なお、 加工目 2 7は、 これに限らず、 例えば網目状に形成してもよい。  The processed stitches 27 are not limited to this, and may be formed in a mesh shape, for example.

ボディ 2はハウジング 3 、 4より硬度の高い材質で形成される。 ボディ 2は例  The body 2 is formed of a material having higher hardness than the housings 3 and 4. Body 2 is an example

., えば鉄系材料で形成され、 ハウジング 3、 4とはそれぞれ例えばアルミ系材料で 形成される。 ., For example, the housings 3 and 4 are made of, for example, an aluminum material.

ボディ 2にハウジング 3、 4を各ボルト 1 7〜2 0によって締結することによ り、 ハウジング 3、 4の端面 2 8、 2 9に硬度の高いボディ 2の加工目 2 7が食 い込む。 これにより、 ギヤポンプ 1内の流体圧力によってボディ 2に対してハウ ジング 3、 4が移動する位置ずれを抑制する。  By fastening the housings 3 and 4 to the body 2 with the respective bolts 17 to 20, the machining surface 2 7 of the body 2 having high hardness bites into the end faces 2 8 and 2 9 of the housings 3 and 4. As a result, the displacement of the housings 3 and 4 relative to the body 2 due to the fluid pressure in the gear pump 1 is suppressed.

ところで、 ボディ 2の端面 2 5、 2 6に刻まれる加工目 2 7は、 その削り深さ が小さいと、 ハウジング 3、 4の位置ずれを十分に防止できない。 一方、 加工目 2 7の削り深さが大きいと、 ボディ 2とハウジング 3、 4との間に隙間が生じ、 ギヤポンプ 1から流体洩れが生じる可能性がある。  By the way, if the machining depth 27 of the end faces 25, 26 of the body 2 is small, the displacement of the housings 3, 4 cannot be prevented sufficiently. On the other hand, if the machining depth 27 is large, a gap may be formed between the body 2 and the housings 3 and 4, and fluid leakage from the gear pump 1 may occur.

これに対処して、 本発明は、 ボディ 2とハウジング 3、 4との接合部に多数の 微細な粒子 3 0を介在させ、 加工目 2 7の削り深さを大きくすることなく、 ボデ ィ 2とハウジング 3、 4との位置ずれを防止する構成とする。  In response to this, the present invention allows a large number of fine particles 30 to be interposed at the joint between the body 2 and the housings 3 and 4, so that the body 2 7 can be manufactured without increasing the depth of machining. And the housing 3 and 4 are prevented from being displaced.

粒子 3 0は例えば鋼、 铸鉄、 カーボン材等の切削粉等を用い、 ボディ 2とハウ ジング 3、 4の材質より硬度が高い材質とする。  The particles 30 are made of, for example, cutting powder such as steel, pig iron, or carbon, and have a higher hardness than those of the body 2 and the housings 3 and 4.

硬度の高い粒子 3 0を用いることにより、 粒子 3 0がボディ 2の端面 2 5、 2 6とハウジング 3、 4の端面 2 8、 2 9とにそれぞれ食い込み、 ボディ 2とハウ ジング 3、 4との接合部に沿っての摩擦力を高め、 互いの間に位置ずれが生じる ことを有効に防止できる。  By using particles 30 with high hardness, the particles 3 0 bite into the end surfaces 2 5 and 2 6 of the body 2 and the end surfaces 2 8 and 2 9 of the housing 3 and 4, respectively, and the body 2 and the housings 3 and 4 It is possible to increase the frictional force along the joints and effectively prevent displacement between each other.

粒子 3 0はコーティング剤 3 1に混ぜ合わせ、 コーティング剤 3 1と共にボデ ィ 2の両端面 2 5、 2 6に塗布する。  Particles 30 are mixed in coating agent 31 and applied to both end faces 25, 26 of body 2 together with coating agent 31.

コーティング剤 3 1はボディ 2とハウジング 3、 4との接合部に密着し隙間を 無くすと共に電食等の腐食が生じることを防止するものである。  The coating agent 31 adheres to the joint between the body 2 and the housings 3 and 4 to eliminate gaps and prevent corrosion such as electrolytic corrosion.

以上のように本発明は、 ドライブギヤ 1 1、 ドリブンギヤ 1 2が嚙み合いなが ら回転して流体を吐出するギヤポンプ 1であって、 ドライブギヤ 1 1、 ドリブン ギヤ 1 2が組み込まれるボディ 2と、このボディ 2に接するハウジング 3、 4と、 互いに接するボディ 2の端面 2 5、 2 6とハウジング 3、 4の端面 2 8、 2 9と の間に介在しボディ 2とハウジング 3、 4との位置ずれを防止する多数の粒子 3 0と、 ボディ 2にハウジング 3、 4を締結する複数のボルト （締結部材） 1 7〜 2 0とを備える。 As described above, the present invention is a gear pump 1 that rotates and discharges fluid while the drive gear 1 1 and the driven gear 1 2 are engaged with each other, and the body 2 in which the drive gear 1 1 and the driven gear 1 2 are incorporated. And between the housings 3 and 4 in contact with the body 2 and the end surfaces 2 5 and 2 6 of the body 2 in contact with each other and the end surfaces 2 8 and 2 9 of the housing 3 and 4, and the body 2 and the housings 3 and 4 A large number of particles 30 that prevent misalignment, and multiple bolts (fastening members) that fasten the housings 3 and 4 to the body 2 2 0.

ボディ 2の端面 2 5、 2 6とハウジング 3、 4の端面 2 8、 2 9との間に多数 の粒子 3 0が介在することにより、 ギヤポンプ 1内の流体圧力によってボディ 2 とハウジング 3、 4との間に接合部に沿つての位置ずれが生じることを有効に防 止でき、 ギヤポンプ 1のポンプ効率を維持できる。  A large number of particles 30 are interposed between the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4, so that the body 2 and the housings 3 and 4 are driven by the fluid pressure in the gear pump 1. Therefore, it is possible to effectively prevent the displacement along the joint between the two and the pump efficiency of the gear pump 1 can be maintained.

本実施形態では、 粒子 3 0をボディ 2とハウジング 3、 4とに比べてその硬度 が高い材質によって形成する。  In the present embodiment, the particles 30 are formed of a material having a higher hardness than the body 2 and the housings 3 and 4.

これにより、硬度の高い粒子 3 0がボディ 2の端面 2 5、 2 6とハウジング 3、 4の端面 2 8、 2 9とにそれぞれ食い込み、 ギヤポンプ 1内の流体圧力によって ボディ 2とハウジング 3、 4との間に位置ずれが生じることを有効に防止できる。 本実施形態では、 ボディ 2の端面 2 5、 2 6とハウジング 3、 4の端面 2 8、 2 9の少なくとも一方に加工目 2 7を形成し、 粒子 3 0とこの加工目 2 7とを介 してボディ 2とハウジング 3、 4との位脣ずれを防止する。  As a result, the hard particles 30 bite into the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4, respectively, and the body 2 and the housings 3 and 4 are driven by the fluid pressure in the gear pump 1. It is possible to effectively prevent the positional deviation between the two. In the present embodiment, a machining mark 27 is formed on at least one of the end faces 25, 26 of the body 2 and the end faces 28, 29 of the housings 3, 4, and the particles 30 and the machining marks 27 are interposed therebetween. Thus, the displacement between the body 2 and the housings 3 and 4 is prevented.

これにより、 ボディ 2とハウジング 3、 4とは、 加工目 2 7によって位置決め されるとともに、 粒子 3 0によっても位置決めされるため、 加工目 2 7の削り深 さを小さくしても、ハウジング 3、 4の位置ずれを十分に防止できる。 この結果、 加工目 2 7の削り深さを小さくして、 ボディ 2とハウジング 3、 4との間から流 体が洩れることを防止できる。  As a result, the body 2 and the housings 3 and 4 are positioned by the machining marks 2 7 and are also positioned by the particles 30, so that even if the machining depth of the machining marks 2 7 is reduced, the housing 3, The position shift of 4 can be sufficiently prevented. As a result, it is possible to reduce the cutting depth of the machining stitch 27 and prevent the fluid from leaking between the body 2 and the housings 3 and 4.

本実施形態では、 粒子 3 0をコーティング剤 3 1に混ぜ合わせ、 ボディ 2の端 面 2 5、 2 6とハウジング 3、 4の端面 2 8、 2 9の少なくとも一方にコーティ ング剤 3 1と共に粒子 3 0を塗布する。  In this embodiment, the particles 30 are mixed with the coating agent 3 1, and the particles together with the coating agent 3 1 are applied to at least one of the end surfaces 2 5 and 2 6 of the body 2 and the end surfaces 2 8 and 2 9 of the housing 3 and 4. 3 Apply 0.

これにより、 ボディ 2の端面 2 5、 2 6またはハウジング 3、 4の端面 2 8、 2 9に粒子 3 0を均一に分布させることができるため、 ギヤポンプ 1内の流体圧 力によってボディ 2とハウジング 3、 4との間に位置ずれが生じることを有効に 防止できる。  As a result, the particles 30 can be uniformly distributed on the end faces 2 5 and 2 6 of the body 2 or the end faces 2 8 and 2 9 of the housings 3 and 4, so that the body 2 and the housing can be separated by the fluid pressure in the gear pump 1. It is possible to effectively prevent displacement between 3 and 4.

そして、 コーティング剤 3 1に腐食防止剤を用いることにより、 ボディ 2とハ ウジング 3、 4との接合部に電食等の腐食が生じることを防止できる。  By using a corrosion inhibitor in the coating agent 31, it is possible to prevent corrosion such as electrolytic corrosion from occurring at the joint between the body 2 and the housings 3 and 4.

他の実施の形態として、 粒子 3 0をボディ 2とハウジング 3、 4とに比べてそ の硬度が低い材質によって形成し、 ボディ 2とハウジング 3、 4との間で圧縮さ れる粒子 3 0を介して摩擦力を高める構成としてもよレ、。 In another embodiment, the particles 30 are formed of a material whose hardness is lower than that of the body 2 and the housings 3 and 4, and compressed between the body 2 and the housings 3 and 4. It is also possible to increase the frictional force through particles 30.

他の実施の形態として、 ボディ 2の端面 2 5、 2 6とハウジング 3、 4の端面 2 8 , 2 9の両方を平滑に形成し、 加工目 2 7を用いることなくボディ 2とハウ ジング 3、 4との位置決めを粒子 3 0のみによって行う構成としてもよい。 産業上の利用可能性  In another embodiment, both the end faces 2 5 and 2 6 of the body 2 and the end faces 2 8 and 2 9 of the housings 3 and 4 are formed smoothly so that the body 2 and the housing 3 can be used without using the machining holes 2 7. , 4 may be positioned only by the particles 30. Industrial applicability

本発明にかかるギヤポンプは、 油圧装置や水圧装置等に設けられるポンプに適 している。  The gear pump according to the present invention is suitable for a pump provided in a hydraulic device, a hydraulic device or the like.

Claims

請求の範囲 The scope of the claims 1 . 一対のギヤが嚙み合いながら回転して流体を吐出するギヤポンプであって、 各ギヤが組み込まれるボディと、 このボディに接するハウジングと、 互いに接す るボディの端面とハウジングの端面との間に介在しボディとハウジングとの位置 ずれを防止する多数の粒子と、 ボディにハウジングを締結する締結部材とを備え ることを特徴とするギヤポンプ。 1. A gear pump that discharges fluid by a pair of gears rotating while meshing, and includes a body in which each gear is incorporated, a housing that is in contact with the body, an end surface of the body that is in contact with each other, and an end surface of the housing A gear pump comprising: a large number of particles interposed between the body and the housing to prevent displacement between the body and the housing; and a fastening member for fastening the housing to the body. 2 . 前記粒子を前記ボディと前記ハウジングとに比べてその硬度が高い材質によ つて形成したことを特徵とする請求項 1に記載のギヤポンプ。 2. The gear pump according to claim 1, wherein the particles are formed of a material whose hardness is higher than that of the body and the housing. 3 . 前記ボディの前記端面と前記ハウジングの前記端面の少なくとも一方に加工 目を形成し、 前記粒子とこの加工目とを介して前記ボディと前記ハウジングとの 位置ずれを防止することを特徴とする請求項 1に記載のギヤポンプ。 3. Forming a machining mark on at least one of the end face of the body and the end face of the housing, and preventing displacement of the body and the housing via the particles and the machining mark. The gear pump according to claim 1. 4 . 前記粒子をコーティング剤に混ぜ合わせ、 前記ボディの前記端面と前記ハウ ジングの前記端面の少なくとも一方にコーティング剤と共に前記粒子を塗布する ことを特徴とする請求項 1に記載のギヤポンプ。 4. The gear pump according to claim 1, wherein the particles are mixed with a coating agent, and the particles are applied together with the coating agent to at least one of the end surface of the body and the end surface of the housing.
PCT/JP2007/069638 2007-10-02 2007-10-02 Gear pump Ceased WO2009044491A1 (en)

Priority Applications (6)

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CN200780100686A CN101802406A (en) 2007-10-02 2007-10-02 Gear pump
KR1020107009603A KR20100083157A (en) 2007-10-02 2007-10-02 Gear pump
US12/733,808 US20100202913A1 (en) 2007-10-02 2007-10-02 Gear pump
JP2009535948A JPWO2009044491A1 (en) 2007-10-02 2007-10-02 Gear pump
PCT/JP2007/069638 WO2009044491A1 (en) 2007-10-02 2007-10-02 Gear pump
EP07829376A EP2202410A1 (en) 2007-10-02 2007-10-02 Gear pump

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2448272C2 (en) * 2010-05-20 2012-04-20 Мирослав Георгиевич Георгиевский Gear hydraulic unit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994691A (en) * 2010-09-30 2011-03-30 张良 Gear pump liquid supercharging equipment, and production process and application thereof
US9028222B2 (en) 2011-08-26 2015-05-12 Hamilton Sundstrand Corporation Variable output pump
US8845313B2 (en) * 2011-11-18 2014-09-30 Caterpillar Inc. Oil pump for an engine
DE102015117562B4 (en) * 2014-10-16 2025-12-18 Johnson Medtech (Hk) Limited gear pump
WO2021030710A1 (en) * 2019-08-14 2021-02-18 Viking Pump, Inc. High pressure pumping system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147133A (en) 1992-11-09 1994-05-27 Kayaba Ind Co Ltd Gear pump
JP2006022948A (en) * 2004-06-07 2006-01-26 Honda Motor Co Ltd tightening structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147133A (en) 1992-11-09 1994-05-27 Kayaba Ind Co Ltd Gear pump
JP2006022948A (en) * 2004-06-07 2006-01-26 Honda Motor Co Ltd tightening structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2448272C2 (en) * 2010-05-20 2012-04-20 Мирослав Георгиевич Георгиевский Gear hydraulic unit

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US20100202913A1 (en) 2010-08-12
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JPWO2009044491A1 (en) 2011-02-03

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