JPS5838392A - Gear pump or gear motor - Google Patents
Gear pump or gear motorInfo
- Publication number
- JPS5838392A JPS5838392A JP13751881A JP13751881A JPS5838392A JP S5838392 A JPS5838392 A JP S5838392A JP 13751881 A JP13751881 A JP 13751881A JP 13751881 A JP13751881 A JP 13751881A JP S5838392 A JPS5838392 A JP S5838392A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- motor
- shaped groove
- seal member
- gear pump
- 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.)
- Granted
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、歯車ポンプまたはモータ、とくに正、逆両
回転にて使用可能なるものに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gear pump or motor, particularly one that can be used in both forward and reverse rotation.
歯車ポンプまた一チを圧になると歯車側面隙間からの漏
nが増大して容積効率かわる< r、xす、その性能が
低下する。こnを防ぐために歯車の側面に軸方向の移動
可能な側板もしくは軸受ブツシュと一体にした側板を配
設し、こnら側板の歯車側面に当接する側とは反対の側
すなわちその背面に吐出側もしくは吸込側のそnぞn高
圧流体圧力を主として作用させることによって歯車側面
側からの押圧力とバランスさせ、歯車側面隙間からの漏
nの増加を抑え、容積効率の低下を防ぐようにさnてい
る。When the gear pump becomes pressurized, leakage from the gear side clearance increases, reducing the volumetric efficiency and reducing its performance. In order to prevent this, a side plate that is movable in the axial direction or a side plate that is integrated with the bearing bushing is provided on the side of the gear, and the discharge is on the opposite side of the side plate from the side that comes into contact with the side of the gear, that is, on the back side of the side plate. By mainly applying high-pressure fluid pressure on the gear side or suction side, it is balanced with the pressing force from the side of the gear, suppressing an increase in leakage from the gap on the side of the gear, and preventing a decrease in volumetric efficiency. There are n.
第1図は前記した軸受ブツシュと一体の側板が組みこま
nた歯車ポンプ・モータの側断面図で。FIG. 1 is a side sectional view of a gear pump/motor incorporating the above-mentioned bearing bush and integral side plate.
駆動軸(1)と一体の主動歯車(2)が、従動軸(3)
と一体の従動歯車(4)とかみあわさnでケーシング(
5)におさめらn、同じくそnにおさめらnた側板と一
体の軸受プツシ−+61. (i)によって駆動軸(1
)、従動輪G)がそnぞrt回転自在番こ支承されてい
る。この軸受ブツシュ+61.(61は112図に示オ
゛ように駆動軸。The main gear (2), which is integrated with the drive shaft (1), is connected to the driven shaft (3).
The casing (
5) A bearing pusher integrated with the side plate, which is also inserted into the same place, is attached to the side plate +61. (i) by the drive shaft (1
) and driven wheels G) are rotatably supported. This bearing bushing +61. (61 is the drive shaft as shown in Figure 112.
従動輪用のそnぞn軸受プツシ、が一体化さnた軸受ブ
ロックとして構成さn、その側板面がフロントカバー(
7)、リアーカバー(8)Lそnぞn対向するようにさ
nている。Each bearing pusher for the driven wheel is constructed as an integrated bearing block, and its side plate surface is connected to the front cover (
7) The rear cover (8) L is placed so as to face each other.
この種の側板と前記両力バー、1のそnぞれ隙間に圧力
流体を導く圧力室を形成(2,この中に貯留さnる圧力
流体から生ずる押圧力によって歯車側面からの押圧力と
対抗させる手段には従来から種々の試みがなさ1.てい
る。This type of side plate and the above-mentioned two force bars form pressure chambers that guide pressure fluid into the respective gaps (1) (2) The pressing force generated from the pressurized fluid stored in the chambers acts as a pressing force from the side of the gear. Various attempts have been made in the past as countermeasures.
たとえばwi2図に示したものについて説明すると、軸
受孔圓、@を囲むように側板面に第3図に体に成形さn
た@3図に示す断面コ字形のたとえば耐油性ゴムからな
るシール部材0が図示のとおり収めらnている。いまA
側を低圧側、B@を高圧側とすると、高圧側(ロ)の流
体(作動油)が前記溝とシール部材Oとの隙間から前記
溝に侵入し。For example, to explain what is shown in Figure 2, there is a molded body on the side plate surface surrounding the bearing hole circle, @, as shown in Figure 3.
A sealing member 0 made of, for example, oil-resistant rubber and having a U-shaped cross section is housed as shown in FIG. Now A
When side is the low pressure side and B@ is the high pressure side, the fluid (hydraulic oil) on the high pressure side (b) enters the groove from the gap between the groove and the seal member O.
シール部材(至)をその内部から押出す(第3図では押
上げる)ように作用し、シール部材(3)をフロントカ
バーけ)およびリアーカバー(8)に強く押付ける。It acts to push out (in FIG. 3, push up) the seal member (3) from inside thereof, and strongly presses the seal member (3) against the front cover (3) and the rear cover (8).
シタ力って側板ts+、 tg+とフロントカバー+7
1.!jアーカバー(8)とのそnぞれ隙間にシール部
材@で区切らnた圧力室、すなわち高圧力室卸、中圧力
室(財)、低圧力室内がそnぞn形成さn、この中にそ
1、ぞnためらnる圧力流体から生ずる押圧力と。Shita force is side plate TS+, TG+ and front cover +7
1. ! Pressure chambers separated by seal members are formed in the gaps with the arc cover (8), namely, a high pressure chamber, a medium pressure chamber, and a low pressure chamber. First, the pressing force generated from the pressure fluid.
シール部材−の表向からのフロントカバー+71.!J
アーカバーの)に対する押圧力の反作用から生ずる押圧
力と罠よって軸受ブツシュ+e+、tiがそnぞn歯車
+2+、 (4)の側面へ押圧さnることとなる。ただ
し、側板(mlにおいては側板(6)と対称的に□□□
か低圧力室、(L)が高圧力室となるのであり、以下の
説明においても同様である。Front cover from the front side of the sealing member +71. ! J
The pressing force and the trap resulting from the reaction of the pressing force on the arc bar) press the bearing bushings +e+, ti against the sides of the gears +2+, (4). However, in the side plate (ml), it is symmetrical to the side plate (6) □□□
(L) is a low pressure chamber, and (L) is a high pressure chamber, and the same holds true in the following description.
一方、歯車(21,+41のそnぞn歯形部側向からの
流体圧による押圧力は、低圧側(A)から高圧#(B)
へ近付く番こつnて大きくなり一様ではない。そのため
に第2図に示した側板と一体形の軸受ブツシュ(61,
(61においては側板部からの前記押圧力がシール部材
(至)による押圧力の半分程度だけ過大となり。On the other hand, the pressing force due to the fluid pressure from the side of the n tooth profile of gears (21, +41) is from the low pressure side (A) to the high pressure # (B).
As it approaches, it gets bigger and the size is not uniform. For this purpose, the bearing bushing (61,
(In 61, the pressing force from the side plate portion is about half of the pressing force by the sealing member (to)).
その歯車+21. +41に当接する面においてシール
作用をなすと同時にこnら歯車にブレーキ作用を及ぼす
おそnがある。The gear +21. While the surface that contacts +41 performs a sealing action, there is a possibility that this may also exert a braking action on the gear.
このことは62図の側板161. (65を装着した高
圧側(至)を吐出側とする歯車ポンプ、または七〇を吸
込側とする歯車モータにおいて生ずる欠点であり。This corresponds to the side plate 161 in Figure 62. (This is a drawback that occurs in gear pumps equipped with 65 whose high pressure side (to) is the discharge side, or gear motors where 70 is the suction side.
前記とは反対にA側を高圧側に、部側を低圧側にするよ
うに前記とはそnぞn逆方向の回転を行わせる歯車ポン
プ・そ−夕においても同様に生スる欠点である。Contrary to the above, this same drawback occurs in gear pumps that rotate in the opposite direction, such that the A side is on the high pressure side and the A side is on the low pressure side. be.
第4図に示した側板(61,te+は第2図に示したも
のの前記欠点を改良した一例であるが、軸受孔αB。The side plate (61, te+ shown in FIG. 4 is an example of the one shown in FIG. 2 with the above-mentioned drawbacks improved), but the side plate (61, te+) has a bearing hole αB.
■を囲む第3図に示す断面形状をした8字形の溝には中
実の断面形状が角形のたとえば耐油性ゴムからなるシー
ル部材iが収めらnでおり、8字形溝と同様の断面形状
の放射状の分岐溝には第5図に示す断面を有する同様材
質からなるシール部材Iが左側の上下2つの溝に対して
は第5図のとおり、右側の上下2つの溝に対しては第5
図とは反1対向にそnjf:f′1.収めら1ている。A sealing member i made of, for example, oil-resistant rubber and having a square cross-sectional shape is housed in a figure-eight-shaped groove surrounded by the figure-eight groove and has a cross-sectional shape similar to that of the figure-eight groove. In the radial branch grooves, a sealing member I made of the same material and having a cross section shown in Fig. 5 is installed. 5
Opposite to the figure is njf:f'1. There is one in total.
高圧側中)の流体(作動油)は、右側の上、下2つのシ
ール部材Q41のリップを押えこんで、シール部材篩、
aoによって区切らnる側板+s+、 +6′)とフロ
ン!・カバー(7)、リアーカバー(8)とのそ1.ぞ
n隙間〈なし地で示した部分に)〉にも侵入する。また
、高圧流体は左側の上、下2つの第5図に示すシール部
材σ〜の+l ツブと溝との隙間から溝内に侵入し、外
側のリップを押し開け、フロントカバー(7)、リアー
カバー(8)をこのリップにて押付けることによって高
圧流体をしゃ断するように作用する。したがって側板(
6)。The fluid (hydraulic oil) on the high pressure side (middle) is pressed down the lips of the two seal members Q41 on the right side, upper and lower, through the seal member sieve,
n side plates separated by ao +s+, +6') and Freon!・Cover (7) and rear cover (8) 1. It also invades gaps (indicated by blank areas). In addition, the high-pressure fluid enters the groove through the gap between the upper and lower seal members σ~ shown in Figure 5 on the left side, pushes the outer lip open, and seals the front cover (7) and the rear. By pressing the cover (8) with this lip, it acts to cut off the high pressure fluid. Therefore, the side plate (
6).
(6′)とフロントカバー(7)、リアーカバー(8)
とのそ1ぞわ隙間に形成さnる高圧力室はなし地で示し
たσ幻、輛の部分に限定さ1.る。そして高圧力室側。(6'), front cover (7), rear cover (8)
A high-pressure chamber is formed in the crevice between the two sides. Ru. and the high pressure chamber side.
(ハ)と低圧力室−とにそnぞn貯留される圧力流体か
ら生ずる押圧力によって軸受ブツシュ+61. (g+
がそlぞn歯車+21. (41の側面へ押圧さするこ
ととなる。(c) Pressure force generated from the pressure fluid stored in the low pressure chamber and the bearing bushing +61. (g+
Gaso lzo n gear +21. (It will be pressed against the side of 41.
一方、前記したとおり歯車(21,+41の歯形部側面
からの流体圧による押圧力は低圧測置から高圧側(ロ)
へ接近するにつnて大きくなり一様ではない。On the other hand, as mentioned above, the pressing force due to the fluid pressure from the side surface of the tooth profile of the gear (21, +41) is from the low pressure measurement position to the high pressure side (b).
As n approaches , it increases and is not uniform.
したがってl!4図に示した側板と一体形の軸受ブツシ
ュ+61. +6’lにおいては側板の歯車側面に当接
する面に作用する押圧力に対抗する押圧力を側板背面夢
こ作用させることができ、歯車+21. +4)に当接
する面においてブレーキ作用を及ぼすことなく、シール
作用を行わせることができる。また前記とは反対に五側
を高圧側に、B側を低圧側にするように逆方向の回転を
行わせる歯車ポンプ・モータにおいても同様のシール作
用を行わせることができる。Therefore l! Bearing bushing integrated with the side plate shown in Figure 4 +61. At +6'l, a pressing force can be applied to the rear surface of the side plate that is counter to the pressing force acting on the surface of the side plate that comes into contact with the side surface of the gear, and the gear +21. +4) A sealing action can be performed without exerting a braking action on the surface that abuts. Further, in contrast to the above, a similar sealing effect can be achieved in a gear pump motor which is rotated in the opposite direction so that the fifth side is on the high pressure side and the B side is on the low pressure side.
しかし、1114aに示す側板を装着した歯車ポンプ・
モータにおいては、運転、停止を繰返えす毎に、シール
部材iとシール部材−との接触部に作用する高圧流体に
より両部材i、11問に摩擦を生じ、そのためにシール
部材i、uiが往々にして破損し、そこから高圧流体が
低圧力室向へまわりこみ、lI板+e+、+6′)から
の押圧力が過大となり、第2図に示した側板と同じく歯
車にブレーキ作用を及ぼすこととなる。However, the gear pump equipped with the side plate shown in 1114a
In the motor, whenever the motor is repeatedly started and stopped, friction is generated between the two members i and 11 due to the high pressure fluid acting on the contact area between the seal members i and ui. They often break, and high-pressure fluid flows around to the low-pressure chamber, causing excessive pressing force from the lI plates (+e+, +6'), which exerts a braking effect on the gears in the same way as the side plates shown in Figure 2. Become.
に正、逆両回転にて使用可能な側板可動形のものにおけ
る前記欠点を解消するためになさ口たものであって1作
動油の吸込口および吐出口に接続するケーシングの孔部
にはめこま1.たがいにかみあって回転するようにさn
た一対の歯車を備え。This hole was created to solve the above-mentioned drawbacks of the side plate movable type that can be used in both forward and reverse rotation. 1. As if they were interlocking and rotating.
Equipped with a pair of gears.
これら歯車の側面に当接して歯車側面のシールを行なう
側板を有する歯車ポンプまたはモータにおいて、前記側
板の歯車#面に当接する側とは反対の側に前記歯車かみ
あい部の高圧側および低圧側とそnぞn接続する高圧力
室、低圧力室およびこわ、ら両圧力室の間に中圧力室を
、前記側板にその軸孔まわりの8字形の溝およびこの溝
の上下に左右対称にそれと接続するしの字形溝をそnぞ
n設け、前記8字形溝に無端シール部材を、そnと部分
的に重ね合わせた有端シール部材を前記しの字形溝にそ
nぞn収めることにより形成したことを特徴とする歯車
ポンプまたはモータにかかるものである。In a gear pump or motor having a side plate that comes into contact with the side surface of the gear to seal the side of the gear, the side plate has a high pressure side and a low pressure side of the gear meshing portion on the side opposite to the side that comes into contact with the gear # side. A medium pressure chamber is provided between the connecting high pressure chamber, low pressure chamber, and both pressure chambers, and a figure-8 groove is provided in the side plate around the shaft hole, and a medium pressure chamber is provided in the side plate symmetrically above and below this groove. By providing each of the eight-shaped grooves for connection, and placing an endless seal member in the eight-shaped groove and an end sealing member partially overlapped with the eight-shaped groove, each of the endless seal members is placed in the eight-shaped groove. The present invention relates to a gear pump or motor characterized by the following configuration.
以下、この発明にかかる実施例装置について図面を参照
しながら詳細に説明する。116図はこの実施例装置に
組込まnた軸受ブツシユと・一体形の側板の正面図であ
る。図中−はシール部材で、第6図化示すようにその断
面形状が長方形をなす可撓性のプラスチック材たとえば
ポリ四ムウ化エチレンのエンドレスのものからなり、軸
受孔o、Qを囲んで設けらn?:s字形の溝に収めら詐
、@は押付は部材で、その断面形状が第9図に示すとお
り円形をなす耐油性ゴム材からなり、シール部材−をそ
nが収められる溝の内側面に押付ける用をなす。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 116 is a front view of a side plate integrated with the bearing bushing incorporated in this embodiment device. In the figure, - is a sealing member, which is made of an endless flexible plastic material such as polytetratetraethylene ethylene with a rectangular cross-sectional shape as shown in Figure 6, and is provided surrounding the bearing holes o and Q. La n? :Set in an S-shaped groove, @ means a pressed member, made of oil-resistant rubber material with a circular cross-sectional shape as shown in Figure 9, and a sealing member on the inner surface of the groove in which it is placed. It serves the purpose of pressing against.
側板(6)、−)の上部および下部にはシール部材(至
)を収める溝にそ′ってしの字形の溝が対称的に設け6
f’L、その溝にシール部材(至)と同じ断面形状、同
じ材質からなるシール部材鰭がシール部材西と部分的に
重ね合わせて収めらnるとともに押付は部材(至)と同
じ断面形杖、同じ材質の押付は部材(至)が収めらnで
いる。In the upper and lower parts of the side plates (6), -), there are symmetrical grooves in the shape of a bow along the groove in which the sealing member (to) is accommodated.
f'L, the seal member fin, which has the same cross-sectional shape and the same material as the seal member (to), is fitted in the groove partially overlapping with the seal member (to), and the pressing part has the same cross-sectional shape as the member (to). The cane is made of the same material as the member (to).
つぎにこのように構成された側板+s+、tmと一体の
軸受ブツシユit、tj+を装着した歯車ポンプまたは
モータにおける動作について説明する。Next, the operation of the gear pump or motor equipped with the side plates +s+, tm and integral bearing bushings it, tj+ constructed in this way will be described.
いまB側を高圧側、すなわち歯車ポンプとして使用する
場合の吐出側、歯車モータとして使用する場合の吸込側
とし、入側を低圧側、すなわち歯車ポンプの場合の吸込
側、歯車モータの場合の吐出側とする。高圧It@)の
流体(作動油)が、シール部材−および上下2つの右側
のシール部材(171により区切られた側板(61,<
e’rと〕aントカバー(7)’。Now, side B is the high pressure side, that is, the discharge side when used as a gear pump, and the suction side when used as a gear motor, and the inlet side is the low pressure side, that is, the suction side when used as a gear pump, and the discharge side when used as a gear motor. side. The fluid (hydraulic oil) of the high pressure It@) is supplied to the side plate (61, <
e'r and] ant cover (7)'.
リアーカバー(8)との隙間に侵入し、高圧力室0が形
成さnる。It invades the gap between the rear cover (8) and a high pressure chamber 0 is formed.
この場合、押付は部材(至)はシール作用をせず。In this case, the pressing member (to) does not have a sealing effect.
シール部材(至)をそnが収めら釘、る溝の内側面に押
付ける役をなしているだけであるので、前記高圧力室(
ハ)は押付は部材(至)の部分も含み大きくされている
。軸受ブツシュ+61. tg+の上下の切欠けからは
中圧力の流体が側板+e+、t61aフロントカバー(
7)。It only serves to press the sealing member (toward) against the inner surface of the groove in which the nail is housed, so that the high pressure chamber (
In c), the pressing force is increased to include the part of the member (to). Bearing bushing +61. Medium-pressure fluid flows from the upper and lower notches of tg+ to side plate +e+ and t61a front cover (
7).
リアーカバー(8)とのそnぞn隙間に侵入し、前記高
圧力室(ハ)と同様に中圧力室−が形成さn、低圧装置
には前記同様に低圧力室■が形成さnる。そして軸受ブ
ツシュ+61.(61は前記3つの圧力室に貯留さnる
圧力流体から生ずる押圧力によってそnぞn歯車+21
. (41の側面へ押圧されることとなり。It penetrates into the gap between the rear cover (8) and a medium pressure chamber is formed in the same way as the high pressure chamber (c), and a low pressure chamber is formed in the low pressure device in the same manner as described above. Ru. And bearing bushing +61. (61 is the gear +21 that is generated by the pressing force generated from the pressure fluid stored in the three pressure chambers.
.. (It will be pressed against the side of 41.
歯車(21i41に当接する面において、歯形部分から
作用する流体圧力から生ずる押圧力に対抗し、適切なシ
ール作用を行わせることができる。また前記とは反対に
入側を高圧側に、B側を低圧側にする逆方向回転を行わ
せる歯車ポンプ・モータにおいても同様のシール作用を
行わせることができる。On the surface that comes into contact with the gear (21i41), it is possible to counter the pressing force generated from the fluid pressure acting from the toothed part and perform an appropriate sealing action.In addition, contrary to the above, the inlet side is set to the high pressure side, and the B side A similar sealing effect can be achieved in a gear pump/motor that rotates in the opposite direction, with the pressure on the low pressure side.
この側板+s+、+6′)を装着した歯車ポンプ・モー
タにおいても運転、停止を繰返えす毎に、シール部材(
至)と節との接触部において高圧流体の作用により両部
材西0面間に摩擦を生ずるが、こ1.ら両部材(至)、
a71は摩擦係数の小さいプラスチック材、たとえばポ
リ四ふっ化エチレンで作らnでおり、しかもその表面硬
度は耐油性ゴムなどに比して高いことから、シール部材
(至)、 (17+が破損することはおこりえず、十分
な耐久性を有し、側板+e)、 (efをして適切なシ
ール作用をつねに保持させることができる。Even in gear pump motors equipped with side plates +s+, +6'), the sealing member (
Friction occurs between the west zero faces of both members due to the action of high-pressure fluid at the contact area between the joint and the joint. and both members (to),
A71 is made of a plastic material with a small coefficient of friction, such as polytetrafluoroethylene, and its surface hardness is higher than that of oil-resistant rubber, so the sealing member (17+) may be damaged. It does not cause any damage, has sufficient durability, and can always maintain an appropriate sealing effect by using side plates +e), (ef).
この発明にかかる歯車ポンプ・モータは正、逆側回転用
のものであるから、どちらか片方の回転用のものに対し
てもそのまま用いることができることはもちろんである
。また以上の説明においては可動形側板に、主動軸(1
)および従動輪口)の両軸受a11. Q3を備えた軸
受プツシ−+61. tg+と一体にしたものを用いた
歯車ポンプ・モータについてのべたが、軸受ブツシュ+
e+、t61と別々にした可動側板を歯車(2)、(4
)と軸受ブツシュ+s)、+6)の間に装着するように
した歯車ポンプ・モータについても全く同様のことがい
いうる。Since the gear pump motor according to the present invention is for forward and reverse rotation, it goes without saying that it can be used as is for rotation in either direction. In addition, in the above explanation, the main drive shaft (1
) and driven wheel mouth) both bearings a11. Bearing pusher with Q3 +61. I have written about a gear pump/motor that is integrated with tg+, but bearing bushing +
Separate movable side plates from e+ and t61 are connected to gears (2) and (4).
) and bearing bushes +s), +6).
以上の説明によって明らかなようにこの発明にかかる歯
車4ンプまたはモータにおいては、高圧側に接続する高
圧力室、低圧側に接続する低圧力室およびこnら高圧力
室の間に中圧力流体が導入さnる中圧力室の3つが、4
m板の歯車側面に当接する側とは反対側に軸孔まわりの
8字形の溝およびこの溝の上下にそれと接続するしの字
形溝をそnぞn設け、前記8字形溝に無端シール部材を
。As is clear from the above description, in the gear pump or motor according to the present invention, there is a high pressure chamber connected to the high pressure side, a low pressure chamber connected to the low pressure side, and a medium pressure fluid between these high pressure chambers. Three of the medium pressure chambers into which
An 8-shaped groove around the shaft hole is provided on the opposite side of the m-plate from the side that contacts the side surface of the gear, and an 8-shaped groove is provided above and below this groove to connect with it, and an endless seal member is provided in the 8-shaped groove. of.
そnと部分的番と重ね合わせた有端シール部材を前記し
の字形溝にそnぞn収めることによって形成さ1でいる
ことから、歯車ポンプ・モータの運転。Operation of the gear pump/motor is achieved by accommodating the overlapping end seal members into the above-mentioned dogleg-shaped grooves.
って良好な運転性能を保つことができる。This allows you to maintain good driving performance.
第1図は歯車ポンプ・モータの側断面図、第2図は従来
の軸受ブツシュと一体形の側板の正面図。
第3図はその璽−■断面を示す部分断面図、第4図は従
来の別な軸受ブツシュと一体形の側板の正面図、第5図
はそのV−V断面を示す部分断面図。
94図はこの発明にかかる実施例装置の軸受ブツシュと
一体形の側板の正面図、第7図はその■−VilIIr
iiiを示す部分断面図である。
(2)・・・主動歯車、(4)・・・従動歯車、(5)
・・・ケーシング。
+s+、+g+・・・軸受ブツシュと一体形の側板、Q
5・・・は無端シール部材、Qa・・・押付は部材、
tl?l・・・有端シール部材、(至)・・・押付は部
材、(A)・・・低圧側1g3)・・・高圧側。
0・・・高圧力室、 (L)・・・低圧力室、−・・・
中圧力室。
弗1図
廊6図
(6゛)
弗7図FIG. 1 is a side sectional view of a gear pump/motor, and FIG. 2 is a front view of a side plate integrated with a conventional bearing bush. FIG. 3 is a partial cross-sectional view taken along the line--■, FIG. 4 is a front view of another conventional side plate integrated with a bearing bushing, and FIG. 5 is a partial cross-sectional view taken along the line V--V. Fig. 94 is a front view of a side plate integrated with the bearing bush of the embodiment device according to the present invention, and Fig. 7 is its ■-VilIIr
FIG. 3 is a partial cross-sectional view showing iii. (2)...Main gear, (4)...Driven gear, (5)
···casing. +s+, +g+...Side plate integrated with bearing bushing, Q
5... is an endless seal member, Qa... is a member,
tl? l...Ended seal member, (To)...Pressed member, (A)...Low pressure side 1g3)...High pressure side. 0...High pressure chamber, (L)...Low pressure chamber, -...
Medium pressure chamber. Illustrated Figure 6 (6゛) Illustrated Figure 7
Claims (1)
部にはめこまn、たがいにかみあって回転するようにさ
nた一対の歯車を備え、これら歯車の側面に当接して歯
車側面のシールを行なう側板を有する歯車ポンプまたは
モータにおいて、前記側板の歯車側面に当接する側とは
反対の側に前記歯車のかみあい部の高圧側および低圧側
とそnぞn接続する高圧力室、低圧力室およびこnら両
圧力室の間に中圧力室を、前記側板にその軸孔まわりの
8字形の溝およびこの溝の上下に左右対称にそnと接続
するしの字形溝をそnぞn設け、前記8字形溝に無端シ
ール部材を、そnと部分的に重ね合わ葉た有端シール部
材を前記しの字形溝にそnぞれ収めることにより形成し
たことを特徴とする歯車ポンプまたはモータ。A pair of gears are fitted into the holes of the casing that connect to the suction and discharge ports of the hydraulic oil, and are engaged with each other to rotate. In a gear pump or motor having a side plate for carrying the gear, a high pressure chamber and a low pressure chamber are connected to the high pressure side and the low pressure side of the meshing part of the gear on the side opposite to the side of the side plate that contacts the side surface of the gear. A medium pressure chamber is provided between these two pressure chambers, and a figure-eight groove is formed in the side plate around the shaft hole, and a figure-eight groove is formed above and below this groove symmetrically to connect it to the groove. A gear pump or motor, characterized in that the gear pump or motor is formed by placing an endless seal member in the figure-eight groove and fitting an end seal member partially overlapping with the end seal member in the figure-eight groove. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13751881A JPS5838392A (en) | 1981-08-31 | 1981-08-31 | Gear pump or gear motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13751881A JPS5838392A (en) | 1981-08-31 | 1981-08-31 | Gear pump or gear motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5838392A true JPS5838392A (en) | 1983-03-05 |
JPS6252154B2 JPS6252154B2 (en) | 1987-11-04 |
Family
ID=15200543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13751881A Granted JPS5838392A (en) | 1981-08-31 | 1981-08-31 | Gear pump or gear motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5838392A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6248978A (en) * | 1985-07-16 | 1987-03-03 | イドロペルフエクト、アンテルナシヨナ−ル、アツシユペイ | Hydraulic pressure compensator for hydraulic gear pump |
US7144234B2 (en) * | 2001-10-24 | 2006-12-05 | Pierburg, Sarl | Flanged gear pump |
CN107605725A (en) * | 2017-10-11 | 2018-01-19 | 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 |
-
1981
- 1981-08-31 JP JP13751881A patent/JPS5838392A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6248978A (en) * | 1985-07-16 | 1987-03-03 | イドロペルフエクト、アンテルナシヨナ−ル、アツシユペイ | Hydraulic pressure compensator for hydraulic gear pump |
JPH0680885U (en) * | 1985-07-16 | 1994-11-15 | イドロペルフェクト、アンテルナショナール、アッシュペイ | Hydraulic compensator for hydraulic gear pump or motor |
US7144234B2 (en) * | 2001-10-24 | 2006-12-05 | Pierburg, Sarl | Flanged gear pump |
CN107605725A (en) * | 2017-10-11 | 2018-01-19 | 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 |
Also Published As
Publication number | Publication date |
---|---|
JPS6252154B2 (en) | 1987-11-04 |
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