JPH02144674U

JPH02144674U -

Info

Publication number: JPH02144674U
Application number: JP5245989U
Authority: JP
Priority date: 1989-05-08
Filing date: 1989-05-08
Publication date: 1990-12-07

Description

[Brief explanation of drawings]

第１図は本考案の多連プランジヤポンプの第１
の実施例を示し、運動方向変換手段にリードカム
を採用した多連プランジヤポンプの断面図、第２
図は本考案の多連プランジヤポンプの第２の実施
例を示し、運動方向変換手段に斜板を採用した多
連プランジヤポンプの断面図、第３図ａ，ｂ，ｃ
，ｄはプランジヤの動作状態を示す動作原理図、
第４図乃至第６図は従来のアキシヤルピストンポ
ンプを示し、第４図は斜軸式アキシヤルピストン
ポンプの断面図、第５図は斜板式アキシヤルピス
トンポンプの断面図であり、第６図は回転斜板式
アキシヤルピストンポンプの断面図である。１０…駆動軸、１２…ハウジング、１４…シリ
ンダブロツク、１６…自在継手、１８…プランジ
ヤ、２０…連接棒、２２，２６，２８…斜板、２
４…係合シユー、３０…カムボデイ、３２…リー
ドカム、３４，３６…ベアリング、３８，４０…
平歯車、４２…弁室、４４…穴、４６…リングギ
ヤ、４８…吸入ポート、５０…吐出ポート、５２
…カバー、５４…リング溝、５５…吸入口、５６
…吐出口、５８…切欠部、６０…斜板、６２…係
合シユー。 Figure 1 shows the first part of the multiple plunger pump of the present invention.
2 is a cross-sectional view of a multiple plunger pump in which a reed cam is used as a motion direction changing means, showing an embodiment of the present invention.
The figure shows a second embodiment of the multiple plunger pump of the present invention, and is a sectional view of the multiple plunger pump in which a swash plate is used as the motion direction changing means.
, d is an operating principle diagram showing the operating state of the plunger,
4 to 6 show conventional axial piston pumps, FIG. 4 is a sectional view of a diagonal shaft type axial piston pump, FIG. 5 is a sectional view of a swash plate type axial piston pump, and FIG. The figure is a sectional view of a rotating swash plate type axial piston pump. DESCRIPTION OF SYMBOLS 10... Drive shaft, 12... Housing, 14... Cylinder block, 16... Universal joint, 18... Plunger, 20... Connecting rod, 22, 26, 28... Swash plate, 2
4... Engagement shoe, 30... Cam body, 32... Lead cam, 34, 36... Bearing, 38, 40...
Spur gear, 42... Valve chamber, 44... Hole, 46... Ring gear, 48... Suction port, 50... Discharge port, 52
...Cover, 54...Ring groove, 55...Intake port, 56
...Discharge port, 58... Notch, 60... Swash plate, 62... Engagement shoe.

Claims

[Claims for Utility Model Registration] (1) A plurality of plungers disposed around the drive shaft are sequentially moved forward and backward in the axial direction through a motion direction conversion means that converts the rotation of the drive shaft into a linear movement. In a plunger pump that sends fluid, a drive shaft rotatably supported inside a valve body is provided with a drive gear together with a motion direction converting means, and a plurality of plungers arranged around the drive gear are provided with a drive gear. A driven gear meshing with the driving gear is provided, and a valve chamber is provided in the valve body in which the plurality of plungers are inserted so as to be freely retractable and rotatable, and suction and discharge ports are provided in each of these valve chambers. a communication path is provided in the valve body that communicates with the suction or discharge port, respectively, and communicates with the outside; and a notch is provided on a rear end side surface of each of the plungers, and the notch of each of the plungers is connected to each of the suction ports. Alternatively, the drive shaft and each plunger are rotated synchronously so as to simultaneously face the discharge port to open and close the valve, and the plungers are moved forward and backward via the motion direction changing means to feed the fluid. A multiple plunger pump characterized by: (2) The movement direction converting means includes a swash plate provided on the drive shaft, and an engagement shoe that slidably engages the swash plate and engages the tips of each of the plungers. The multiple plunger pump according to claim 1. (3) The motion direction converting means includes a lead cam provided on the drive shaft, and an engaging portion rotatably engaged with each of the plungers to engage with the lead cam. Continuous plunger pump. (4) The multiple plunger pump according to claim 1, wherein the driving gear and each driven gear are spur gears having the same ratio.