JPS5841274A - Slant shaft piston pump - Google Patents

Slant shaft piston pump

Info

Publication number
JPS5841274A
JPS5841274A JP56140678A JP14067881A JPS5841274A JP S5841274 A JPS5841274 A JP S5841274A JP 56140678 A JP56140678 A JP 56140678A JP 14067881 A JP14067881 A JP 14067881A JP S5841274 A JPS5841274 A JP S5841274A
Authority
JP
Japan
Prior art keywords
suction
pump
fluid
axis
cylinder block
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.)
Pending
Application number
JP56140678A
Other languages
Japanese (ja)
Inventor
Tadashi Nishimura
正 西村
Tokihiko Umeda
梅田 時彦
Hiroshi Morita
博 森田
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP56140678A priority Critical patent/JPS5841274A/en
Publication of JPS5841274A publication Critical patent/JPS5841274A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26Control
    • F04B1/28Control of machines or pumps with stationary cylinders
    • F04B1/29Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B1/295Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26Control
    • F04B1/30Control of machines or pumps with rotary cylinder blocks
    • F04B1/32Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

PURPOSE:To reduce the fluidity loss of sucking fluid when the discharging amount of the pump is in an increasing direction and the axial center of a cylinder block is inclined by a method wherein a partitioning wall for limiting the flow path of the sucking fluid is provided in the suction path of the fluid in a casing cover. CONSTITUTION:The partitioning wall 23 for limiting the flow path of the sucking fluid is provided in the suction path 19 for the fluid, which is provided in the casing cover 15 forming a slide guidance surface 16. The location of the end of the partitioning wall 23 at the side opposing to the suction groove 11 provided on a slant plate 14 is determined so that the area of the flow path for the fluid limited by the partitioning wall 23, which is flowed from the suction path 19 into the suction groove 11, is minimized when the axial center 9 of the cylinder block is inclined to an angle in which the discharging quantity of the pump is maximized.

Description

【発明の詳細な説明】 この発明は、斜軸ピストンポンプであってシリンダブロ
ックの回転に応じて流体の吸入・吐出の切換を行う弁板
に対しその外面に接して該弁板から作用する油圧力を支
持する斜板を、ポンプ駆動軸の軸心に対するシリンダブ
ロック軸心の傾きの交点ないし該交点から若干の距離を
有する点を中心とする円筒側面もしくは肢点を中心とす
る球面として形成された摺動案内面上において接触摺動
せしめることによシポンプ駆動軸の軸心に対してシリン
ダブロック軸心を傾動せしめてポンプ吐出量を可変とす
るように構成されたポンプ、いわゆるセクター派斜軸ビ
ストンボングに関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diagonal piston pump in which oil is applied from the valve plate in contact with the outer surface of the valve plate that switches between suction and discharge of fluid according to the rotation of a cylinder block. The swash plate that supports the pressure is formed as a cylindrical side surface centered at the intersection of the inclination of the cylinder block axis with the axis of the pump drive shaft or a point a certain distance from the intersection, or a spherical surface centered at the limb point. A pump configured to make the pump discharge amount variable by tilting the axis of the cylinder block with respect to the axis of the pump drive shaft by contacting and sliding on the sliding guide surface, the so-called sector tilt axis. It's about biston bongs.

従来のセクター型斜軸ピストンポンプの構造を第1図な
いしjIt図に示す。図にかいて、ポンプ駆動軸lはケ
ーシング−内において軸心3のまわ)に回転自在に設け
られる0ダはシリンダブロックで、輪状に配置された複
数個のピストン室!をそなえ、それぞれのピストン室j
はピストン≦を収容する。ポンプ駆動軸70回転は、ポ
ンプ駆動軸lの7ツンジ7とピストンごとの間に装嵌さ
れ九ロッドlを介してシリンダブーツクダに伝達され、
ポンプ駆動軸lの軸心30まわルの回転に応じ、シリン
ダブーツクグはシリンダブロック軸心りOまわ〉の回転
を強制される。
The structure of a conventional sector-type oblique-axis piston pump is shown in FIGS. In the figure, the pump drive shaft 1 is rotatably provided inside the casing around the axis 3. The cylinder block 0 is a cylinder block with a plurality of piston chambers arranged in a ring. and each piston chamber j
accommodates the piston≦. The 70 revolutions of the pump drive shaft are transmitted to the cylinder boot cylinder via the nine rods L fitted between the seven twists 7 of the pump drive shaft L and each piston,
In response to the rotation of the pump drive shaft l by 30 turns around the axis, the cylinder boot plug is forced to rotate by O turns around the cylinder block axis.

lθハ弁板で、シリンダブ四ツクグの端面に対接して設
けられ、第り図に示すように1円周aに沿っていわゆる
そら豆形の吸入溝//$!−よび吐出溝lコがそれぞれ
穿設買通される。シリンダブロックダが弁板10と接触
摺動O状態で回転すると、ピストン室jからシリンダブ
ロックダの端頁に通じる開口13がそれぞれ円周aK沿
って移動し、開口/3が吸入溝//に連通するピストン
室!−は1入行程を行い、開口13が吐出@/Jに連通
するピストンjiltは吐出行程を行うO7りは斜板で
、弁板10から作用する油圧力を支持するように弁板1
0CI外面tciして設けられ、ケーシングカバーlj
K形成された摺動案内面/4に支承される。摺動案内面
14は、軸心3に対するシリンダブロック軸心?の傾き
の交点Pを中心とする円筒側面として構成され、したが
ってシリンダブーツクダ、弁板10および斜板14tを
交点Pを中心とする円弧状の摺動案内@/4に沿って一
体的に傾動せしめることが可能であるOツクは傾動ピス
トンで、ビンノlを植設され、ビン/Iはその先端が斜
板14tに嵌置され、傾動ピストンノアをその軸線方向
に移動せしめることによ〉、斜板lりを摺動案内面14
に沿って傾動せしめることができる。ツタはターシン〆
カパー7!に設けられた流体の艮入路、〃はクーシング
カノ(−7!に設けられた流体の吐出路、またlは斜!
ノダに設けられた吸入溝、nは斜板/4tK設けられた
吐出溝である。
lθ is a valve plate, which is provided in opposition to the end face of the four cylinder tabs, and has a so-called fava bean-shaped suction groove along one circumference a as shown in Figure 1. - and discharge grooves are each drilled through. When the cylinder blocker rotates in contact and sliding O state with the valve plate 10, the openings 13 leading from the piston chamber j to the end pages of the cylinder blocker move along the circumference aK, and the opening /3 is in the suction groove //. Piston chambers that communicate! - carries out one intake stroke, and the piston jilt whose opening 13 communicates with the discharge @/J carries out the discharge stroke.
0CI outer surface tci and casing cover lj
It is supported on the K-shaped sliding guide surface /4. Is the sliding guide surface 14 aligned with the cylinder block axis relative to the axis 3? The cylinder boot, valve plate 10 and swash plate 14t are integrally tilted along an arcuate sliding guide @/4 centered at the intersection P. The Otsuk that can be moved is a tilting piston, and a bottle l is planted therein, and the tip of the bottle/I is fitted on the swash plate 14t, and by moving the tilting piston in its axial direction, Slide guide surface 14 for sliding the swash plate
It can be tilted along the The ivy is Tahshin〆Copper 7! 〃 is the fluid inlet passage provided at Cushing Kano (-7!), and l is the oblique!
The suction groove provided in the nodah, n is the discharge groove provided in the swash plate/4tK.

このように構成される従来のセクター麗斜軸ピストンポ
ンプにおいて、第1図はシリンダブロック軸心りがポン
プ吐出量を最大とする角度Kまで傾動せしめられて、こ
のときのポンプに吸入される流体の流れの状態を示す。
In the conventional sector tilting axis piston pump constructed in this way, Fig. 1 shows the flow of fluid drawn into the pump when the axis of the cylinder block is tilted to an angle K that maximizes the pump discharge amount. Indicates the state of flow.

ふつうケーシングカバーノ!に設けられる吸入路lデは
、シリンダブロック軸心りの傾動の全範囲にわたって斜
板/&の吸入溝コlの入口に対応せしめるために、とく
に吸入溝コlと対接する出口を図示のように巾広く設け
られているが、流体の流れ抵抗を少くして吸入効率を向
上せしめることが問題とされるのは、該軸心りを吐出量
増大の方向、すなわち図の右方向に傾動せしめ九ときで
ある。とζろが吐出量が最大の位置まで腋軸心9を傾動
せしめたときの吸入溝、2/の入口は、吸入路lりの出
口の食中の右半部のみに対応せしめられることになシ、
その結果吸入路lりから吸入される流体の流れは、図示
のように吸入溝Hに直通しない左半部KTh%Aで渦を
生じ、流体の円滑な流れを阻害して吸入効率を著しく低
下せしめる。
Normal casing cabano! In order to correspond to the inlet of the suction groove 1 of the swash plate/& over the entire range of tilting about the axis of the cylinder block, the suction passage 1 provided in However, the problem with reducing fluid flow resistance and improving suction efficiency is to tilt the axis in the direction of increasing the discharge amount, that is, to the right in the figure. It was nine o'clock. The inlet of the suction groove, 2/, when the axillary axis 9 is tilted to the position where the discharge amount is maximum, corresponds only to the right half of the outlet of the suction passage. Nasi,
As a result, the flow of fluid sucked from the suction passage 1 generates a vortex in the left half KTh%A that does not pass directly into the suction groove H, as shown in the figure, which obstructs the smooth flow of fluid and significantly reduces suction efficiency. urge

斜軸ピストンポンプの吸入する流体の流れを吸入路内に
おいて整流し、流路内O流動損失を減少して吸入効率を
向上せしめるための従来の手段としては、たとえば特開
w!111−/)7011号の「回転するシリンダドラ
ムを有するピストン機械」がある◎骸従来技術紘、吸入
路内に設けられる案内羽根によって、シリンダブーツク
の回転に応じて吸入行程を行うピストンの#吸入量の最
も大きい回転位相O個所をねらって、その方向に流体の
流れを整流し、流体の供給量を重点的に増大するような
流れを付与せんとするものである@したが9てこの技術
は、斜軸ピストンポンプの傾動位IK関する吸入効率上
の問題を解決課題とするものではなく、傾動位置とは\ 関係のない異なる分野tIcおける問題に関するもので
あシ、本発IjIKよって解決せんとする技術課題に対
してなん60示唆を与え得るものではないO この発明は、セクター屋斜軸ピストンポンプにおいて、
ポンプ吐出量が零から最大に至るまでのシリンダブロッ
ク軸心の全傾動範囲のうち、ポンプ吐出量が最大のとき
の流路内の流動損失を最小ならしめることに重点を置き
、この状態もしくはその近傍の状JIKおける吸入効率
の向上を図らんとするものである。すなわちこの発明の
目的は、ケーシングカバー内に形成される吸入路に対す
るきわめて簡単な構成の付設によって、ポンプ吐出量の
増加方向のシリンダブロック軸心の傾動時における吸入
流体の流動損失を減少し、もって吸入効率を飛躍的に向
上せしめることKある。
Conventional means for improving suction efficiency by rectifying the flow of fluid sucked by a diagonal piston pump in a suction passage, reducing O flow loss in the passage, and improving suction efficiency include, for example, Japanese Patent Application Laid-open No. 111-/) No. 7011 "Piston machine with rotating cylinder drum" The purpose is to aim at the rotational phase O point where the suction amount is the largest, rectify the fluid flow in that direction, and provide a flow that intensively increases the fluid supply amount. The technology is not intended to solve the problem of suction efficiency related to the tilting position IK of a tilted piston pump, but is related to a problem in a different field unrelated to the tilting position. This invention does not provide any suggestions for the technical problem at hand.
Of the entire tilting range of the cylinder block axis from zero to the maximum pump discharge, we focused on minimizing the flow loss in the flow path when the pump discharge was at its maximum. The aim is to improve the suction efficiency in the nearby JIK. That is, an object of the present invention is to reduce the flow loss of the suction fluid when the axis of the cylinder block is tilted in the direction of increasing the pump discharge amount by attaching an extremely simple structure to the suction passage formed in the casing cover. It can dramatically improve inhalation efficiency.

つぎにこの発明装置の構成につき、図面に基いて具体的
に説明する@第1図はその一実施例を示し、図中従来装
置を示した第1図ないし第2図と同一の部材に対しては
同一符号を用いて表示するものとする。、u/Ii吸入
路lり内に設けた仕切壁で、吸入路15Fから数人され
る流体の流路を制限するためのものである◇仕切壁、U
の設置態様は、斜板/gOa人溝1ノに対接する側の端
部、ulの位置を、シリンダブロック軸心りがポンプ吐
出量を最大とする角度にまで傾動したときに仕切壁nに
よって制限された流体が吸入路lデから艮大溝コlに対
して流入するときの流路両横の異同を最小ならしめる位
置とされる。図において、吸入溝吃O入口ならびにこれ
と対接する吸入路lデの出口のそれぞれ紙面と直角方向
の巾は、たとえば第ダ図にも示されるようには鵞同等で
あル、そのため上記流路面積の異同を最小ならしめるた
めの端部、u&の位置は、1IE1図に示すよ5に、端
部ユhから黴入路ノツの出口の右端までの巾が吸入@、
22の入口の巾にはソ一致する位置となる口なお図例で
は、端部コaは吸入路/りの出口の食中の丁度中央位置
tc&、?、このような関係位置となるようにあらかじ
めポンプの諸元を設定することによシ、吐出量を増減す
るための傾動角度の進退方向が図例と反対方向となるポ
ンプを必要とする場合においても、同一のケーシングカ
バーをそのt−流用しりる便利がある。
Next, the configuration of the device of this invention will be explained in detail based on the drawings. Figure 1 shows one embodiment of the device, and the same members as those in Figures 1 and 2 showing the conventional device are shown below. shall be indicated using the same code. ◇Partition wall, U
The installation mode is such that when the cylinder block axis is tilted to the angle that maximizes the pump discharge amount, the position of the end of the swash plate/gOa facing the man groove 1, ul, is moved by the partition wall n. This is the position that minimizes the difference on both sides of the flow path when the restricted fluid flows from the suction path l into the large groove. In the figure, the widths of the inlet of the suction groove and the outlet of the suction passage L facing it in the direction perpendicular to the plane of the paper are, for example, the same as that of the above-mentioned flow path. In order to minimize the difference in area, the position of the end u & is as shown in Figure 1IE1.
In the example shown in the figure, the end core a is at the exact center position of the outlet of the suction passage tc&, ? By setting the specifications of the pump in advance so that the relative positions are as described above, it is possible to use a pump in which the forward/backward direction of the tilting angle for increasing or decreasing the discharge amount is opposite to that shown in the illustration. It is also convenient to use the same casing cover.

第1図例のポンプと、従来のこの種のポンプとの比較試
験を行った結果が第一図の性能曲線に示される。発明者
によって実施されたこの試験は、ポンプの吸入口圧力P
1の低下に伴ってポンプ吐出流量の減少する状態を比較
したもので、図中の破線曲線Iは本発明のポンプを示し
、実線曲線■は仕切壁のない従来のポンプを示す。ポン
プ吐出流量の許容最大変動値を31に抑えると、従来の
ポンプでは圧力P1が−o、arb訂のとき吐出流量の
低下が3−となるのに対し、本発明のポンプでは圧力P
iが一〇、tコbarのときに吐出流量の低下が3−と
なる0このことは、同一の吐出流量を維持するためのポ
ンプ吸入口圧力P1が、本発明のものは従来のもOKく
らべてさらK O,14tharだけ低くてもよいとと
になる0この数値の理解を助けるために例をあげて説明
すると、該ポンプがヘッドタンクから吸入管を経て流体
を吸入しているものとした場合、本発明ポンプの場合は
、ヘッドタンクの設置高さを従来のポンプの場合にくら
べて約乙4’A)、y m 4−約/、!j mだけ低
くすることが可能となシ、このことは実務の上で利益を
及ぼすことが少なくない。また、上記吸入管内の流体の
流速を/、0コm/Iとした場合、上記吸入口圧力の差
は配管の直線長さに換算して約4gmに相当し、このこ
とは本発明ポンプの場合、タンクを≦4tm*ff余分
に遠隔地に設置することが許されることを意味するもの
であ)、機器の配置上少なからぬ利便をもたらすことが
理解される0 第3図は異なる実施例を示し、訂拡仕切壁で、端部21
.の位置は、第1図例における端部2Jあの位置に準す
る位置とされる。本例が第1図例と異なる点は、その設
置態様が左右対称形でない点にあシ、また仕切壁コO背
面(図の左@)に空隙を設けず、仕切壁コを吸入路lり
の左側面の突出面として構成した点にある0この構成に
かいて、シリンダブロック軸心りをポンプ吐出量最大の
角度まで傾動し九ときく図の実線表示の位置としたとき
】の流体の流れは、図示のようにきわめて滑らかでTo
〕、途中に渦の発生などの流動損失につながる因子がな
く、吸入効率が飛躍的に向上せしめられる。図中のり豐
祉、ポンプ吐出量を零とする位置まで傾動したときのシ
リンダブ田ツク軸心の位置を示し、また一点鎖線の表示
は、このときの弁板10、斜板/&ならびにこれらに設
けられた流体導通路の各位置を示すもので、本発明の指
向する技術課題がとくにポンプ吐出量を増加する方向の
傾動角度範囲に属するものであシ、皺方向の傾動角度の
増大に伴ってその効果が発揮されるものであることが図
示の構造から容易に理解される。なお、傾動角度が小さ
い領域にかいては、吸入油流が減じられ、吸入流速が小
さくなるため、従来からポンプの吸入能力はなんら問題
とならなかった。本発明の構成l1ch−いて亀、上記
と同じ理由から、該領域での新たな問題の発生はないこ
とが確かめられている。
The performance curve of FIG. 1 shows the results of a comparative test between the pump of the example shown in FIG. 1 and a conventional pump of this type. This test carried out by the inventor determined that the pump inlet pressure P
1, the broken line curve I shows the pump of the present invention, and the solid line curve 2 shows the conventional pump without a partition wall. When the maximum permissible fluctuation value of the pump discharge flow rate is suppressed to 31, the pressure P1 in the conventional pump is -0, and the decrease in the discharge flow rate is 3- in the case of arb revision, whereas in the pump of the present invention, the pressure P1 is -0.
When i is 10 and t bar, the discharge flow rate decreases to 3-0. This means that the pump suction port pressure P1 to maintain the same discharge flow rate is lower than that of the conventional one. In comparison, it would be fine if it were lower by KO,14 thar.0 To help understand this value, let's give an example.Assume that the pump sucks fluid from the head tank through the suction pipe. In this case, in the case of the pump of the present invention, the installation height of the head tank is approximately 4'A), y m 4-approx., compared to the conventional pump. It is possible to lower j by m, which is often beneficial in practice. Further, when the flow rate of the fluid in the suction pipe is /, 0 cm/I, the difference in the suction port pressure is equivalent to about 4 gm in terms of the linear length of the pipe, which means that the pump of the present invention (This means that the tank is allowed to be installed in an additional remote location by ≦4tm*ff), and it is understood that this brings considerable convenience in terms of equipment arrangement.0 Figure 3 shows a different embodiment. , with a revised and expanded partition wall, end 21
.. The position is similar to the position of the end 2J in the example of FIG. This example differs from the example in Figure 1 in that the installation is not symmetrical, and there is no gap on the back side of the partition wall (left side in the figure), and the partition wall is connected to the suction path. With this configuration, when the cylinder block axis is tilted to the angle where the pump discharge amount is maximum and it is at the position indicated by the solid line in the figure, the fluid The flow is extremely smooth as shown in the figure.
], there are no factors that lead to flow loss, such as generation of vortices, and the suction efficiency is dramatically improved. The figure shows the position of the axis of the cylinder tab when tilted to the position where the pump discharge amount is zero, and the dashed line indicates the position of the valve plate 10, swash plate /&, and these at this time. This indicates each position of the provided fluid conduction path, and the technical problem to which the present invention is directed belongs particularly to the tilting angle range in the direction of increasing the pump discharge amount, and as the tilting angle in the wrinkle direction increases. It can be easily understood from the illustrated structure that the effect can be achieved by In addition, in a region where the tilt angle is small, the suction oil flow is reduced and the suction flow velocity becomes small, so that the suction capacity of the pump has not conventionally been a problem. Regarding the structure of the present invention, it has been confirmed that no new problems will occur in this area for the same reason as mentioned above.

第ダ図紘、本発明の適用対象としての斜軸ピストンポン
プが、傾動手段としての傾動ピストン17の配設位置を
斜板/&の直下部から側方にずらせたポンプである場合
の実施例を示す。傾動ピストンlりの配設をこのように
側方にずらせてピン//による傾動力の作用力点を斜板
lりに設けた張出部Jg上・に置くと、ケーシングカバ
ー/jに設けられる流体通路、とくに吸入路19の配設
を1由に広く取ることができ、吸入抵抗の減少に役立つ
。その他の構成は第7図例のものと同等である・ この発明にか\る斜軸ピストンポンプは以上のよ5に構
成されるので、ケーシングカバー内に形成される吸入路
に対するきわめて簡単な構成の付設によって、ポンプ吐
出量の増加方向のシリンダブ四ツ、り軸心の傾動時にお
ける吸入流体の流動損失を減少し、もって吸入効率を飛
躍的に向上せしめる効果がある。
FIG. shows. If the arrangement of the tilting piston is shifted laterally in this way and the point of action of the tilting force by the pin is placed on the overhang Jg provided on the swash plate, the piston will be placed on the casing cover Jg. The fluid passages, especially the suction path 19, can be arranged widely, which helps reduce suction resistance. The rest of the structure is the same as that of the example in FIG. 7. Since the oblique shaft piston pump according to the present invention is constructed as described above, the suction passage formed in the casing cover has an extremely simple structure. The provision of this has the effect of reducing the flow loss of the suction fluid when the axis of the cylinder tab is tilted in the direction of increasing the pump discharge amount, thereby dramatically improving the suction efficiency.

【図面の簡単な説明】[Brief explanation of drawings]

第7図は本発明装置の一実施例の断面図、第一図はその
性能曲線図、第3図は本発明装置の他の実施例の要部の
断面図、第ダ図は本発明装置のさらに他の実施例の断面
図、第3図および第4図はいずれも従来装置のそれぞれ
異なる破断間における断面図、第り図はその使用部材の
平藺図、第を図は第1図中の要部の作用を説明するため
の断面図である。 1.0.ポンプ駆動軸、コ60.ケーシング、300.
軸心、ダ0..シリンダブロック、j m−*ピストン
室、j 、、、ピストン、7 、、、7ツンジ、r 、
、、 aラド、9.9書80.シリンダプルツク軸心、
10.、、弁板、//、−110,吸入溝、/2.2J
、、。 吐出溝、/J、、、Ij1口、/ダ00.斜板、/j、
、、ケーシングカバー、/j、、、摺動案内面、/7.
、、傾動ピストン、/l・・・ピンS/り・・・吸入路
1−20・・・吐出路、8.コ01.仕切壁、z= 、
、、端部、J・・・張出部O
FIG. 7 is a sectional view of one embodiment of the device of the present invention, FIG. FIGS. 3 and 4 are sectional views of the conventional device at different breaks, respectively. FIG. FIG. 3 is a cross-sectional view for explaining the action of the main parts inside. 1.0. Pump drive shaft, 60. casing, 300.
Axial center, da 0. .. Cylinder block, j m-*Piston chamber, j, , Piston, 7, , 7 Tunji, r,
,, a Rad, 9.9 Book 80. cylinder pull axis,
10. ,, valve plate, //, -110, suction groove, /2.2J
,,. Discharge groove, /J,, Ij1 port, /da00. Swash plate, /j,
,,Casing cover, /j,,,Sliding guide surface, /7.
,, tilting piston, /l... pin S/ri... suction path 1-20... discharge path, 8. Ko01. Partition wall, z= ,
,, end, J... overhang O

Claims (1)

【特許請求の範囲】[Claims] 斜軸ピストンポンプであってシリンダプルツクの回転に
応じて流体の吸入・吐出の切換を行う弁板に対しその外
面に接して該弁板から作用する油圧力を支持する斜板も
しくは弁板と斜板が一体となった部材を、ポンプ駆動軸
の軸心に対するシリンダブロック軸心の傾きの交点ない
し該交点から若干の距離を有する点を中心とする円筒側
面もしくは該点を中心とする球面として形成された摺動
案内面上において接触摺動せしめることによシポンプ駆
動軸の軸心に対してシリンダブロック軸心を傾動せしめ
てポンプ吐出量を可変とするものにおいて、摺動案内面
を形成するケーシングカバーの内部に設けられる流体の
吸入路内に吸入流体の流路を制限するための仕切壁を設
け、仕切壁が斜板に設けられた吸入溝に対接する側の該
仕切壁の端部の位置を、シリンダブロック軸心がポンプ
吐出量を最大とする角度にまで傾動したときに仕切壁に
よって制限された流体が上記吸入路から上記吸入溝に対
して流入する途中の流路面積の異同を最小ならしめる位
置、形状としたことを特徴とする斜軸ピストンポンプ。
A swash plate or a valve plate that is in contact with the outer surface of a slant-axis piston pump that supports the hydraulic pressure acting from the valve plate that switches between suction and discharge of fluid according to the rotation of the cylinder pull. The member in which the swash plate is integrated is formed as a cylindrical side surface centered at the intersection of the inclination of the cylinder block axis with the axis of the pump drive shaft or a point at a certain distance from the intersection, or as a spherical surface centered at the point. A sliding guide surface is formed in a device in which the pump discharge amount is made variable by tilting the axis of the cylinder block with respect to the axis of the pump drive shaft by contacting and sliding on the formed sliding guide surface. A partition wall for restricting the flow path of the suction fluid is provided in the fluid suction path provided inside the casing cover, and the end of the partition wall on the side where the partition wall is in contact with the suction groove provided in the swash plate. When the cylinder block axis is tilted to an angle that maximizes the pump discharge amount, the fluid restricted by the partition wall flows from the suction passage to the suction groove. A tilted shaft piston pump characterized by having a position and shape that minimizes the
JP56140678A 1981-09-07 1981-09-07 Slant shaft piston pump Pending JPS5841274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56140678A JPS5841274A (en) 1981-09-07 1981-09-07 Slant shaft piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56140678A JPS5841274A (en) 1981-09-07 1981-09-07 Slant shaft piston pump

Publications (1)

Publication Number Publication Date
JPS5841274A true JPS5841274A (en) 1983-03-10

Family

ID=15274206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56140678A Pending JPS5841274A (en) 1981-09-07 1981-09-07 Slant shaft piston pump

Country Status (1)

Country Link
JP (1) JPS5841274A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117083A (en) * 1979-03-02 1980-09-09 Linde Ag Piston machine with rotary cylinder drum

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117083A (en) * 1979-03-02 1980-09-09 Linde Ag Piston machine with rotary cylinder drum

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