JPH0329989B2 - - Google Patents
Info
- Publication number
- JPH0329989B2 JPH0329989B2 JP56057073A JP5707381A JPH0329989B2 JP H0329989 B2 JPH0329989 B2 JP H0329989B2 JP 56057073 A JP56057073 A JP 56057073A JP 5707381 A JP5707381 A JP 5707381A JP H0329989 B2 JPH0329989 B2 JP H0329989B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic
- rotor
- hydraulic chamber
- cylinder
- 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 claims description 44
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 239000010724 circulating oil Substances 0.000 description 1
- 238000000034 method 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.
高速油圧ポンプ・モータにおいては、摺動部の
発熱作用による摺動部材間の焼付や、漏油量の増
大による効率の低下が生じる。これに対処する手
段として、ケーシング内に小流量の作動油を通過
させて冷却作用を行わせることは公知である。し
かし、その手段では、配管が必要であり、またケ
ーシング内を通過させる油が小流量であるため、
冷却効果が小さく、かつ、油圧ポンプ・モータの
作動状態に応じて流量を調整することが困難であ
る。 In high-speed hydraulic pumps and motors, the sliding parts may seize due to the heat generated by the sliding parts, and the efficiency may decrease due to an increase in the amount of oil leakage. As a means of dealing with this, it is known to pass a small flow of hydraulic oil into the casing to provide a cooling effect. However, this method requires piping and the flow of oil passing through the casing is small.
The cooling effect is small, and it is difficult to adjust the flow rate depending on the operating state of the hydraulic pump/motor.
この発明は、作動油により良好な冷却作用を行
わせることができ、冷却のための配管や低圧油源
を必要としない高速運転に適する油圧ポンプ・モ
ータを提供することを目的とするものである。 An object of the present invention is to provide a hydraulic pump/motor that can perform a good cooling effect using hydraulic oil and is suitable for high-speed operation without requiring piping or a low-pressure oil source for cooling. .
以下、この発明の一実施態様を図面により説明
する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
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１０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. cam ring 4
is installed. A rotor 7 is rotatably supported via bearings 5 and 6 at the mounting part of the valve shaft 3 enclosed in the inner circumferential walls of both casings 1 and 2, and the right end surface of the rotor 7 is connected to the input/output shaft 8. connected to the section. A plurality of cylinders 9 are provided on the wall of the rotor 7 in the radial direction at intervals, and each cylinder has a reciprocating piston 10 connected to a piston shoe 11 that slides on the inner peripheral surface of the cam ring 4. It is placed so that it can move. 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には二つの油圧室１２，１３と二つの油
道１４，１５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１６をおさ
めた弁穴１７と、一端を弁穴１７にそれぞれ開口
させ他端をそれぞれ油道１４，１５につらねた油
道１８，１９と、一端をそれぞれ弁穴１７に開口
させたポート２１，２２と、一端をそれぞれ弁穴
１７に開口させ他端をそれぞれケーシング内部２
０に開口させた三つの油道２３，２４，２５とが
設けられている。プランジヤ１６には左端の油圧
室２６、右端の油圧室２７、中間の油圧室２８，
２９，３０，３１を形成する複数（六つ）のラン
ドが形成されており、油圧室２６，２７はそれぞ
れ後がわケーシング２の壁部に設けた導油穴３
２，３３を介してポート２１，２２につらねられ
ている。油圧室２７を形成する弁穴部にはストツ
パ３４が取付けられている。 The valve stem 3 is provided with two hydraulic chambers 12, 13 and two oil passages 14, 15, and the rear casing 2 has a valve hole 17 containing a plunger 16 constituting a control valve, and a valve hole 17 that houses a plunger 16 constituting a control valve. Oil pipes 18 and 19 each have an opening in the valve hole 17 and the other end is connected to the oil pipe 14 and 15, respectively, ports 21 and 22 each have one end opened in the valve hole 17, and one end each opens in the valve hole 17. and the other end inside the casing 2
Three oil passages 23, 24, 25 are provided which are opened at 0. The plunger 16 includes a left end hydraulic chamber 26, a right end hydraulic chamber 27, an intermediate hydraulic chamber 28,
A plurality of (six) lands forming 29, 30, 31 are formed, and the hydraulic chambers 26, 27 are connected to oil guide holes 3 provided in the wall of the rear casing 2, respectively.
It is connected to ports 21 and 22 via ports 2 and 33. A stopper 34 is attached to the valve hole forming the hydraulic chamber 27.
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.
ポート２１から高圧油が供給されると、その高
圧油は、導油穴３２を経て油圧室２６に入り、プ
ランジヤ１６を右方向に押し動かし、油圧室２９
が油道１８に通じる。それにより高圧油が油圧室
２９、油道１８、油道１４、油圧室１２を経てシ
リンダ９に供給される。シリンダ９に供給された
高圧油は、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、シリンダ９と油圧室
１３とがつらなり、シリンダ９の低圧油は油道１
５、油道１９を経て油圧室３１にはいる。油圧室
３１にはいつた低圧油は、油道２４を経てケーシ
ング内部２０に流入し、油圧モータを冷却した
後、油道２３、油圧室３０を経てポート２２から
排出させられる。 When high-pressure oil is supplied from the port 21, the high-pressure oil enters the hydraulic chamber 26 through the oil guide hole 32, pushes the plunger 16 to the right, and enters the hydraulic chamber 29.
leads to oil road 18. As a result, high pressure oil is supplied to the cylinder 9 via the hydraulic chamber 29, the oil pipe 18, the oil pipe 14, and the hydraulic chamber 12. The high pressure oil supplied to the cylinder 9 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 together. Along with this, the cylinder 9 and the hydraulic chamber 13 are connected, and the low pressure oil in the cylinder 9 is transferred to the oil pipe 1.
5. It enters the hydraulic chamber 31 via the oil pipe 19. The low pressure oil that has entered the hydraulic chamber 31 flows into the casing interior 20 via the oil pipe 24, cools the hydraulic motor, and is then discharged from the port 22 via the oil pipe 23 and the hydraulic chamber 30.
また、ポート２２から高圧油が供給されたとき
には、その高圧油は導油穴３３を経て油圧室２７
に入り、プランジヤ１６を左方向に押し動かし、
油圧室３０が油道１９に通じる。それにより高圧
油が油圧室３０、油道１９、油道１５、油圧室１
３を経てシリンダ９に供給され、ロータ７が前述
と反対の方向に回転させられる。そして、シリン
ダ９と油圧室１２とがつらなり、シリンダ９の低
圧油は油道１４、油道１８を経て油圧室２８には
いる。油圧室２８にはいつた低圧油は、油道２５
を経てケーシング内部２０に流入し、油圧モータ
を冷却した後、油道２３、油圧室２９を経てポー
ト２１から排出させられる。 Further, when high pressure oil is supplied from the port 22, the high pressure oil passes through the oil guide hole 33 and enters the hydraulic chamber 27.
, push the plunger 16 to the left,
A hydraulic chamber 30 communicates with the oil passage 19 . As a result, high-pressure oil flows into the hydraulic chamber 30, oil pipe 19, oil pipe 15, and hydraulic chamber 1.
3 to the cylinder 9, and the rotor 7 is rotated in the opposite direction to that described above. The cylinder 9 and the hydraulic chamber 12 are connected, and the low pressure oil in the cylinder 9 enters the hydraulic chamber 28 via the oil pipe 14 and the oil pipe 18. The low pressure oil that has entered the hydraulic chamber 28 is transferred to the oil pipe 25.
After flowing into the casing interior 20 and cooling the hydraulic motor, it is discharged from the port 21 via the oil pipe 23 and the hydraulic chamber 29.
したがつて、供給油量のすべてが油圧モータの
冷却のために使用されるため、冷却効果がきわめ
て大きくなる。また、油圧モータの発熱量の大き
い大流量時には、必然的に冷却効果も大きくな
る。 Therefore, all of the supplied oil is used for cooling the hydraulic motor, resulting in an extremely large cooling effect. Further, when the hydraulic motor generates a large amount of heat and has a large flow rate, the cooling effect inevitably becomes large.
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、流通
油量のすべてが油圧ポンプ・モータの冷却に使用
されるゆえ、冷却効果がきわめて大きくなり、か
つ、ケーシングに別個の排油口を設設けないです
み、冷却のための配管や低圧油圧源およびドレン
配管を必要とせず、全体をコンパクトに構成する
ことができる。 As explained above, according to the present invention, all of the circulating oil is used for cooling the hydraulic pump and motor, so the cooling effect is extremely large, and a separate oil drain port is not provided in the casing. This eliminates the need for cooling piping, a low-pressure hydraulic power source, and drain piping, allowing for a compact overall structure.
第１図はこの発明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
２，１３…油圧室、１４，１５…油道、１６…プ
ランジヤ、１７…弁穴、１８，１９…油道、２０
…ケーシング内部、２１，２２…ポート、２３，
２４，２５…油道、２６，２７，２８，２９，３
０，３１…油圧室、３２，３３…導油穴、３４…
ストツパ。
FIG. 1 is a cross-sectional side view showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken from FIG. 1...Front casing, 2...Rear casing, 3...Valve stem, 4...Cam ring, 7...Rotor, 8
...Input/output shaft, 9...Cylinder, 10...Piston, 1
2, 13... Hydraulic chamber, 14, 15... Oil pipe, 16... Plunger, 17... Valve hole, 18, 19... Oil pipe, 20
...Casing inside, 21, 22...Port, 23,
24, 25... Oil road, 26, 27, 28, 29, 3
0, 31... Hydraulic chamber, 32, 33... Oil guide hole, 34...
Stotspa.
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、作動油の流出入ポート部とロータのシリン
ダに対する油の流出入を制御する分配弁との間
に、流出入ポートに導入される作動油の圧力によ
り切替えられる制御弁を設け、その制御弁を介し
て流入ポート部、流出ポート部のいずれかの低圧
油をケーシング内に流入させ、ついで、制御弁に
戻して流入ポート部、もしくは流出ポート部を通
して排出させるように油路を構成したことを特徴
とする油圧ポンプ・モータ。1 In a hydraulic pump/motor in which a rotor that rotates together with an input/output shaft is supported in a casing, and a piston that reciprocates is housed in a cylinder of the rotor, oil flows into and out of the hydraulic oil inflow/outflow port and the cylinder of the rotor. A control valve that is switched by the pressure of hydraulic oil introduced into the inflow and outflow ports is installed between the distribution valve that controls the inflow and outflow ports. 1. A hydraulic pump/motor, characterized in that an oil passage is configured to allow oil to flow into the control valve, then return to a control valve and discharge through an inflow port or an outflow port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56057073A JPS57173575A (en) | 1981-04-17 | 1981-04-17 | Oil hydraulic pump motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56057073A JPS57173575A (en) | 1981-04-17 | 1981-04-17 | Oil hydraulic pump motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57173575A JPS57173575A (en) | 1982-10-25 |
| JPH0329989B2 true JPH0329989B2 (en) | 1991-04-25 |
Family
ID=13045274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56057073A Granted JPS57173575A (en) | 1981-04-17 | 1981-04-17 | Oil hydraulic pump motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57173575A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779648B (en) * | 2020-07-10 | 2021-07-20 | 中国矿业大学 | Low-speed large-torque valve flow distribution inner curve radial plunger type high-water-base hydraulic motor |
-
1981
- 1981-04-17 JP JP56057073A patent/JPS57173575A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57173575A (en) | 1982-10-25 |
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