JPH0329990B2 - - Google Patents
Info
- Publication number
- JPH0329990B2 JPH0329990B2 JP56059388A JP5938881A JPH0329990B2 JP H0329990 B2 JPH0329990 B2 JP H0329990B2 JP 56059388 A JP56059388 A JP 56059388A JP 5938881 A JP5938881 A JP 5938881A JP H0329990 B2 JPH0329990 B2 JP H0329990B2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- oil
- oil pipe
- hydraulic
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003921 oil Substances 0.000 description 42
- 238000001816 cooling Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
- F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
- F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Description
【発明の詳細な説明】
この発明は、入出力軸と一体に回転させるロー
タをケーシング内に支持させ、ロータのシリンダ
に往復動させるピストンをおさめた油圧ポンプ・
モータに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hydraulic pump in which a rotor that rotates integrally with an input/output shaft is supported within a casing, and a piston that reciprocates is housed in a cylinder of the rotor.
It is related to motors.
従来の高速油圧ポンプ・モータにおいては、摺
動部分の摺動速度の上昇にともない、発熱量の増
大により油圧ポンプ・モータの温度が上昇して摺
動部分の焼付きを生じたり、摺動部材間の漏油量
の増大による効率低下をきたしたりする。熱によ
る不都合を除くために、加熱回路、もしくは冷却
回路を油圧ポンプ・モータに設けるには、流入、
流出ポートおよび排出ポートのほかに加熱用また
は冷却用のポートが必要であり、配管が複雑とな
り、かつ、給油用の低圧油圧源を設置しなければ
ならない。 In conventional high-speed hydraulic pumps and motors, as the sliding speed of the sliding parts increases, the temperature of the hydraulic pump and motor increases due to the increase in heat generation, causing seizure of the sliding parts and damage to the sliding parts. This may result in a decrease in efficiency due to an increase in the amount of oil leaking between the parts. In order to provide a heating circuit or a cooling circuit to a hydraulic pump/motor to eliminate the disadvantages caused by heat, inflow,
In addition to the outflow port and discharge port, a heating or cooling port is required, which complicates piping and requires the installation of a low-pressure hydraulic power source for oil supply.
この発明は、上記の欠点を除くことができる油
圧ポンプ・モータを提供することを目的とするも
のである。 The object of the present invention is to provide a hydraulic pump motor that can eliminate the above-mentioned drawbacks.
つぎに、この発明の一実施態様を第１図および
第２図により説明する。 Next, one embodiment of the present invention will be explained with reference to FIGS. 1 and 2.
前がわケーシング１と後がわケーシング２とは
たがいに一体に結合されており、後がわケーシン
グ２の穴には分配弁を構成する弁軸３が取付けら
れており、前がわケーシング１内にはカムリング
４が取付けられている。両ケーシング１，２の内
周壁にかこまれた弁軸３の取付部には軸受５，６
を介してロータ７が回転自在に支持されており、
ロータ７の右端面は入出力軸８の連結部に連結さ
れている。ロータ７の壁部には、間隔をおいて放
射方向に複数個のシリンダ９が設けられており、
各シリンダ９には、カムリング４の内周面を摺動
させるピストンシユー１１を連結したピストン１
０が往復動できるようにおさめられている。カム
リング４の中心はロータ７の中心とある偏心量だ
け偏心させられている。 The front casing 1 and the rear casing 2 are integrally connected to each other, and a valve shaft 3 constituting a distribution valve is attached to a hole in the rear casing 2. A cam ring 4 is installed inside. Bearings 5 and 6 are installed at the mounting portion of the valve shaft 3 surrounded by the inner circumferential walls of both casings 1 and 2.
The rotor 7 is rotatably supported via the
The right end surface of the rotor 7 is connected to a connecting portion of the input/output shaft 8. A plurality of cylinders 9 are provided on the wall of the rotor 7 in the radial direction at intervals,
Each cylinder 9 has a piston 1 connected to a piston shoe 11 that slides on the inner peripheral surface of the cam ring 4.
0 is housed so that it can move back and forth. The center of the cam ring 4 is offset from the center of the rotor 7 by a certain amount of eccentricity.
弁軸３には二つの流出入ポート１２，１３が設
けられており、後がわケーシング２には、制御弁
を構成するプランジヤ１４をおさめるとともにス
トツパ１５をねじばめさせた弁穴１６と、一端を
弁穴１６にそれぞれ開口させ他端をそれぞれ流出
入ポート１２，１３につらねた油道１７，１８
と、一端を弁穴１６に開口させ他端をケーシング
内部１９に開口させた油道２０とが設けられてい
る。前がわケーシング１の壁部には、一端をケー
シング内部に開口させ他端を外壁面に開口させた
排出口２１が設けられている。プランジヤ１４の
左がわの弁穴部には油圧室２２が形成され、右が
わの弁穴部には油圧室２３が形成されている。 The valve stem 3 is provided with two inflow and outflow ports 12 and 13, and the rear casing 2 has a valve hole 16 in which a plunger 14 constituting a control valve is housed and a stopper 15 is screwed into it. Oil pipes 17 and 18 each have one end opened in the valve hole 16 and the other end connected to the inflow and outflow ports 12 and 13, respectively.
and an oil passage 20 which has one end opened into the valve hole 16 and the other end opened into the casing interior 19. A discharge port 21 is provided in the wall of the front casing 1, with one end opening inside the casing and the other end opening on the outer wall surface. A hydraulic chamber 22 is formed in the valve hole on the left side of the plunger 14, and a hydraulic chamber 23 is formed in the valve hole on the right side.
上述したラジアルピストン式油圧ポンプ・モー
タの油圧モータとしての作用について述べる。 The operation of the above-mentioned radial piston type hydraulic pump/motor as a hydraulic motor will be described.
流出入ポート１２から高圧油が供給されると、
その高圧油は、シリンダ９内に流入し、ピストン
１０のピストンシユー１１をカムリング４の内周
面に押付け、これによりピストン１０およびロー
タ７が回転力を得て一体的に回転する。それにと
もない、ピストン１０は排出行程となり、シリン
ダ９内の圧油は低圧となり、流出入ポート１３か
ら流出する。 When high pressure oil is supplied from the inflow and outflow ports 12,
The high pressure oil flows into the cylinder 9 and presses the piston shoe 11 of the piston 10 against the inner circumferential surface of the cam ring 4, whereby the piston 10 and rotor 7 obtain rotational force and rotate integrally. Accordingly, the piston 10 enters the ejection stroke, the pressure oil in the cylinder 9 becomes low pressure, and flows out from the inflow/outflow port 13.
一方、流出入ポート１２に供給された高圧油は
油道１７を経て油圧室２３に流入し、プランジヤ
１４を左方向へ移動させる。これによりプランジ
ヤ１４のランド部により油道２０が絞られ、その
絞り通路を経て圧油がケーシング内部１９に導か
れる。その圧油は油圧モータを冷却した後排出口
２１を経て油タンク（図示してない）に導かれ
る。すなわち、上述したラジアル式油圧モータ
は、流入する高圧油を絞りを介して減圧し、減圧
した圧油をケーシング内部に導いて冷却を行わせ
るものである。 On the other hand, the high pressure oil supplied to the inflow/outflow port 12 flows into the hydraulic chamber 23 via the oil pipe 17, and moves the plunger 14 to the left. As a result, the oil passage 20 is constricted by the land portion of the plunger 14, and the pressure oil is guided into the casing interior 19 through the constricted passage. After cooling the hydraulic motor, the pressure oil is led to an oil tank (not shown) through a discharge port 21. That is, the above-mentioned radial hydraulic motor reduces the pressure of inflowing high-pressure oil through a throttle, and guides the reduced pressure oil into the inside of the casing for cooling.
第３図および第４図は、油圧モータから流出す
る低圧油をケーシング内部１９に導き入れて冷却
を行うようにしたこの発明の他の実施態様を示
す。制御弁を構成するプランジヤ２４は、後がわ
ケーシング２に設けた弁穴２５におさめられてお
り、これには軸方向の油道２６と、軸方向に間隔
をおいた環状溝２７，２８と、一端を油道２６に
つらね他端を環状溝２７，２８につらねた油道２
９，３０とが設けられている。弁穴２５の右端は
連絡穴３１を介して油道３３につらねられ、弁穴
２５の左端は連絡穴３２を介して油道３４につら
ねられている。連絡穴３１，３２、油道３３，３
４は後がわケーシング２の壁部に設けられてい
る。弁穴２５の中間部は後がわケーシング２の壁
部に設けた油道３５を介してケーシング内部につ
らねられている。 3 and 4 show another embodiment of the invention in which low pressure oil flowing out of the hydraulic motor is introduced into the casing interior 19 for cooling. The plunger 24 constituting the control valve is housed in a valve hole 25 provided in the rear casing 2, and includes an axial oil passage 26 and annular grooves 27 and 28 spaced apart in the axial direction. , an oil pipe 2 with one end connected to the oil pipe 26 and the other end connected to the annular grooves 27 and 28.
9 and 30 are provided. The right end of the valve hole 25 is connected to an oil pipe 33 via a communication hole 31, and the left end of the valve hole 25 is connected to an oil pipe 34 via a communication hole 32. Communication holes 31, 32, oil pipes 33, 3
4 is provided on the wall of the rear casing 2. The middle part of the valve hole 25 is suspended inside the casing via an oil pipe 35 provided in the wall of the rear casing 2.
流入した高圧油は油道３３を経てプランジヤ２
４の右がわの油圧室３６に導かれ、プランジヤ２
４を左方向に移動させる。その結果、油道３５、
環状溝２８、油道３０、油道２６、油道２９、環
状溝２７、油道３４を介してケーシング内部１９
と油道３４とがつらねられ、流出油の一部が油圧
モータを冷却した後、排出口２１から排出させら
れる。 The inflowing high pressure oil passes through the oil pipe 33 and reaches the plunger 2.
The plunger 2 is guided to the hydraulic chamber 36 on the right side of the plunger 2.
Move 4 to the left. As a result, Yudo 35,
Inside the casing 19 via the annular groove 28, oil pipe 30, oil pipe 26, oil pipe 29, annular groove 27, and oil pipe 34
and an oil passage 34, and a part of the spilled oil is discharged from the discharge port 21 after cooling the hydraulic motor.
第５図および第６図は第３図および第４図にお
ける油道３５に、銅合金、合成樹脂等の熱膨張率
の大きな材質からなる絞り体３７をリテーナ３８
を介して取付けたこの発明の他の実施態様を示
す。絞り体３７の軸心部には油道３７ａが設けら
れている。油圧ポンプ・モータが高温になると油
道３７ａが拡大し、大量の圧油がケーシング内部
１９に流入することにより、冷却効果が大きくな
る。 5 and 6, a retainer 38 is attached to the oil pipe 35 in FIGS.
Figure 2 shows another embodiment of the invention attached via. An oil passage 37a is provided at the axial center of the throttle body 37. When the hydraulic pump/motor becomes hot, the oil passage 37a expands and a large amount of pressure oil flows into the casing interior 19, thereby increasing the cooling effect.
なお、この発明はラジアルピストン式以外の油
圧ポンプ・モータにも適用することができる。 Note that the present invention can also be applied to hydraulic pumps and motors other than the radial piston type.
以上説明したように、この発明によれば、作動
油により油圧ポンプ・モータを冷却して高温時に
おける摺動部の焼付きや効率の低下を防止するこ
とができ、制御弁をケーシングの壁部に内蔵させ
たことにより冷却用配管や低圧油圧源が不要とな
る。 As explained above, according to the present invention, it is possible to cool the hydraulic pump/motor with hydraulic oil to prevent seizure of the sliding parts and decrease in efficiency at high temperatures, and the control valve can be mounted on the wall of the casing. Built-in, cooling piping and low-pressure hydraulic power sources are no longer required.
第１図はこの発明によるラジアルピストン式油
圧ポンプ・モータの一実施態様を示す断面側面
図、第２図は第１図の−断面図、第３図はこ
の発明の他の実施態様における制御弁部を示す断
面図、第４図は第３図の−断面図、第５図は
この発明の他の実施態様における絞り体を示す断
面図、第６図は第５図の右側面図である。
１…前がわケーシング、２…後がわケーシン
グ、３…弁軸、４…カムリング、７…ロータ、８
…入出力軸、９…シリンダ、１０…ピストン、１
１…ピストンシユー、１２，１３…流出入ポー
ト、１４…プランジヤ、１５…ストツパ、１６…
弁穴、１７，１８…油道、２０…油道、２１…排
出口、２２，２３…油圧室、２５…弁穴、２６…
油道、２７，２８…環状溝、２９，３０…油道、
３１，３２…連絡穴、３３，３４…油道、３５…
油道、３６…油圧室、３７…絞り体、３７ａ…油
道、３８…リテーナ。
FIG. 1 is a cross-sectional side view showing one embodiment of a radial piston hydraulic pump/motor according to the present invention, FIG. 2 is a cross-sectional view taken from FIG. 1, and FIG. 3 is a control valve according to another embodiment of the present invention. FIG. 4 is a cross-sectional view of FIG. 3, FIG. 5 is a cross-sectional view of a throttle body in another embodiment of the present invention, and FIG. 6 is a right side view of FIG. . 1...Front casing, 2...Rear casing, 3...Valve stem, 4...Cam ring, 7...Rotor, 8
...Input/output shaft, 9...Cylinder, 10...Piston, 1
DESCRIPTION OF SYMBOLS 1... Piston shoe, 12, 13... Inflow/outflow port, 14... Plunger, 15... Stopper, 16...
Valve hole, 17, 18...oil pipe, 20...oil pipe, 21...discharge port, 22, 23...hydraulic chamber, 25...valve hole, 26...
Oil pipe, 27, 28... annular groove, 29, 30... oil pipe,
31, 32...Connection hole, 33, 34...Oil pipe, 35...
Oil pipe, 36... Hydraulic chamber, 37... Throttle body, 37a... Oil pipe, 38... Retainer.
Claims (1)
ング内に支持させ、ロータのシリンダに往復動さ
せるピストンをおさめた油圧ポンプ・モータにお
いて、流入ポート、流出ポートのいずれかから作
動油を、ケーシングに内蔵させた制御弁に導き、
ついで絞りを介してケーシング内に流入させ、ケ
ーシング内からケーシングに設けた排出口へ排出
させる導油路を形成したことを特徴とする油圧ポ
ンプ・モータ。1 In a hydraulic pump/motor, a rotor that rotates together with the input/output shaft is supported within the casing, and a piston that moves reciprocatingly is housed in the rotor's cylinder. led to the controlled valve,
A hydraulic pump/motor characterized by forming an oil guide path through which oil flows into a casing through a throttle and is discharged from inside the casing to an outlet provided in the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56059388A JPS57173576A (en) | 1981-04-20 | 1981-04-20 | Oil hydraulic pump motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56059388A JPS57173576A (en) | 1981-04-20 | 1981-04-20 | Oil hydraulic pump motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57173576A JPS57173576A (en) | 1982-10-25 |
| JPH0329990B2 true JPH0329990B2 (en) | 1991-04-25 |
Family
ID=13111843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56059388A Granted JPS57173576A (en) | 1981-04-20 | 1981-04-20 | Oil hydraulic pump motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57173576A (en) |
-
1981
- 1981-04-20 JP JP56059388A patent/JPS57173576A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57173576A (en) | 1982-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5320501A (en) | Electric motor driven hydraulic apparatus with an integrated pump | |
| US10508650B2 (en) | Coolant pump for an internal combustion engine | |
| US4770612A (en) | Steering power-assistance arrangement | |
| US4637293A (en) | Slant plate type hydraulic device | |
| CN102954003B (en) | Magnetic driving pump | |
| US3054357A (en) | Dual pump power transmission | |
| JPH0229868B2 (en) | ||
| US20140147304A1 (en) | Coolant pump for a collant circuit of an internal combustion engine | |
| ITRM950568A1 (en) | VARIABLE DELIVERY PUMP INCLUDING A FLUID OUTLET REGULATION SYSTEM | |
| US2852009A (en) | Cooling liquid circulating system for engines | |
| US10731654B2 (en) | Coolant pump for an internal combustion engine | |
| US2708884A (en) | High speed and pressure vane pump | |
| US3359914A (en) | Method and apparatus for improving efficiency of vane pumps | |
| US4187064A (en) | Rotary machine | |
| GB2237333A (en) | Hydraulic unit with scavenge valve | |
| US3412685A (en) | Pump | |
| JPH0329990B2 (en) | ||
| CN116181598A (en) | Self-cooling speed-increasing axial plunger pump | |
| CA2348817C (en) | Rotary piston engine having an oil system for lubrication and cooling | |
| US3461809A (en) | Radial-piston pump with improved cooling and lubrication | |
| CN112576487A (en) | In-line piston pump | |
| US3307484A (en) | Fluid moving machine | |
| JPS5855358B2 (en) | Hydraulic pump | |
| JPH0329989B2 (en) | ||
| US3395643A (en) | Fluid energy translating device |