JP2003239852A - Hydraulic pump driving device - Google Patents
Hydraulic pump driving deviceInfo
- Publication number
- JP2003239852A JP2003239852A JP2002042549A JP2002042549A JP2003239852A JP 2003239852 A JP2003239852 A JP 2003239852A JP 2002042549 A JP2002042549 A JP 2002042549A JP 2002042549 A JP2002042549 A JP 2002042549A JP 2003239852 A JP2003239852 A JP 2003239852A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- way clutch
- engine
- electric motor
- power
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
【発明の属する技術分野】本発明は、油圧ポンプ駆動装
置に関するものである。
【従来の技術】油圧ポンプ駆動装置を備えた作業機とし
て移動式クレーン、高所作業車、掘削機、等の建設機械
がある。これらの建設機械は、車両に搭載されているこ
とから車両の走行エンジンにより油圧ポンプを駆動して
各油圧アクチュエータを作動させるようにしている。と
ころでこれら建設機械をエンジン動力により油圧ポンプ
を駆動させて作業する場合、エンジンによる騒音ならび
に排ガス規制対策をする必要から、エンジンに替わる動
力源として電動機によって駆動される第２の油圧ポンプ
からの油圧源で建設機械の各油圧アクチュエータを作動
させて作業を行えるようにしている。
【発明が解決しょうとする課題】ところがこのようにし
た建設機械は、エンジンで駆動される油圧ポンプと電動
機で駆動される第２の油圧ポンプの二つの油圧ポンプが
必要になることから、二つの油圧ポンプを並列配置させ
なければならない。また、その為の配管を余分にしなく
てはならない。更に、二つの油圧ポンプの切換え駆動す
るための制御装置が必要となり制御が複雑となる。例え
ば、二つの油圧ポンプから同時に油圧の供給を受けると
過剰供給油量となることから、これの対策を施すために
大流量のリリーフ弁、流量調整弁等が必要となり、これ
らを作用させることはエネルギー損失が大きくなり、効
率を悪くするものである。また、エンジンによる油圧ポ
ンプからの油圧供給を電動機による第２油圧ポンプから
の油圧供給に切換える場合、あるいは逆に切換える場合
に、油圧的にショックなくスムーズに切換えための対策
が必要である。本発明は、このような課題を解決するこ
とができる油圧ポンプ駆動装置を提供することを目的と
する。
【課題を解決するための手段】上記の目的を達成するた
め、本発明の請求項１記載の油圧ポンプ駆動装置は、入
力軸と出力軸を有し出力軸の回転に対して入力軸の回転
が高い時にのみ入力軸から出力軸方向に動力伝達可能に
する第１の一方向クラッチと第２の一方向クラッチとを
備え、第１の一方向クラッチの入力軸にエンジンを接続
し、第２の一方向クラッチの入力軸に電動機を接続し、
第１の一方向クラッチまたは第２の一方向クラッチの出
力軸に油圧ポンプを接続するとともに両出力軸を連結手
段で接続して、前記油圧ポンプを電動機またはエンジン
で回転駆動させるよう構成したことを特徴とするもので
ある。
【発明の実施の形態】以下本発明に係る油圧ポンプ駆動
装置の実施形態について、図１に図示し以下に説明す
る。図１は本発明に係る油圧ポンプ駆動装置を模式的に
図示する説明図である。図１において、１は、第１の一
方向クラッチであって、入力軸１ａ、出力軸１ｂ、内輪
１ｃ、外輪１ｄ、スプラグ１ｅ、歯車１ｆをそれぞれ備
えている。入力軸１ａは内輪１ｃに接続しており、出力
軸１ｂは外輪１ｄに接続している。内輪１ｃと外輪１ｄ
との間に、スプラグ１ｅと呼ばれるカムが均等に配列さ
れており、外輪１ｄの回転に対して内輪１ｃの回転が高
い（Ｎ１ｉｎ ≧Ｎ１ｏｕｔ）時にのみ内輪１ｃから外
輪１ｄ方向に動力伝達可能にしている。逆に外輪１ｄの
回転に対して内輪１ｃの回転が低い（Ｎ１ｉｎ＜Ｎ１ｏ
ｕｔ）時には内輪１ｃから外輪１ｄに動力は伝達されな
い。外輪１ｄ上には歯車１ｆを配置している。２は、第
２の一方向クラッチであって、第１の一方向クラッチ１
と同様に入力軸２ａ、出力軸２ｂ、内輪２ｃ、外輪２
ｄ、スプラグ２ｅ、歯車２ｆをそれぞれ備えている。入
力軸２ａは内輪２ｃに接続しており、出力軸２ｂは外輪
２ｄに接続している。内輪２ｃと外輪２ｄとの間に、ス
プラグ２ｅと呼ばれるカムが均等に配列されており、外
輪２ｄの回転に対して内輪２ｃの回転が高い（Ｎ２ｉｎ
≧Ｎ２ｏｕｔ）時にのみ内輪２ｃから外輪２ｄ方向に動
力伝達可能にしている。逆に外輪２ｄの回転に対して内
輪２ｃの回転が低い（Ｎ２ｉｎ＜Ｎ２ｏｕｔ）時には内
輪２ｃから外輪２ｄに動力は伝達されない。外輪２ｄ上
には歯車２ｆを配置している。第１の一方向クラッチ１
と第２の一方向クラッチ２は、歯車１ｆと歯車２ｆが噛
合って互いに動力が伝達できるように接続している。し
たがって、出力軸１ｂと出力軸２ｂは、歯車１ｆと歯車
２ｆで外輪１ｄと外輪２ｄを介して接続させているので
ある。すなわち、歯車１ｆと歯車２ｆは、請求項１記載
の連結手段に該当する。第１の一方向クラッチ１の入力
軸１ａには、エンジン３が接続されており、第２の一方
向クラッチ２の入力軸２ａには、電動機４が接続されて
おり、第１の一方向クラッチ１の出力軸１ｂには、油圧
ポンプ５が接続されている。エンジン３は、通常作業機
を搭載した車両の走行用エンジンが使用されるが、専用
のエンジンを使用してもよい。電動機４は、車両に搭載
したバッテリー電源で駆動するものであってもよいし、
外部電源で駆動するものであってもよい。但し第１の一
方向クラッチ１と第２の一方向クラッチ２が連結手段で
接続させる都合上両動力は離間して配置されるものでな
い。このように構成した本発明に係る油圧ポンプ駆動装
置は、次のように作用する。まずエンジン３をアイドリ
ング回転させ、電動機４を停止させている場合について
説明する。この場合、電動機４は停止しているので、エ
ンジン３の回転が入力軸１ａから内輪１ｃ、スプラグ１
ｅ、外輪１ｄを介して出力軸１ｂに動力伝達される。よ
って油圧ポンプ５はエンジン３の動力で回転駆動され
る。一方第２の一方向クラッチ２の外輪２ｄは、第１の
一方向クラッチ１の外輪１ｄの回転が歯車１ｆと歯車２
ｆの接続により回転されるが、外輪２ｄの回転に対して
内輪２ｃの回転が低い（電動機４は停止状態である）
（Ｎ２ｉｎ＜Ｎ２ｏｕｔ）ので、外輪２ｄのみが空転す
る。次に、エンジン３をアイドリング回転のままで、電
動機４を回転駆動させ徐々に回転を上げる場合について
説明する。電動機４の回転を徐々に上げてＮ２ｉｎ＝Ｎ
２ｏｕｔとなつた時点から電動機4側の動力が入力軸２
ａから内輪２ｃ、スプラグ２ｅ、外輪２ｄ、外輪１ｄを
介して出力軸１ｂに動力伝達される。その後Ｎ２ｉｎ＞
Ｎ２ｏｕｔになった時点で電動機4側動力のみが油圧ポ
ンプ５に伝達される。すなわち、第１の一方向クラッチ
１では、エンジン３のアイドリング回転より電動機４に
よる回転が高くなった（Ｎ１ｉｎ＜Ｎ１ｏｕｔ）ことに
よりエンジン３の動力は内輪１ｃから外輪１ｄに伝達さ
れなくなる。ここで電動機4の動力が油圧ポンプ５に伝
達されている状態で、エンジン３をアイドリング状態か
ら徐々に回転を上げた場合について説明する。エンジン
３の回転を徐々に上げてＮ１ｉｎ＝Ｎ１ｏｕｔとなつた
時点からエンジン３側の動力が入力軸１ａから内輪１
ｃ、スプラグ１ｅ、外輪１ｄを介して出力軸１ｂに動力
伝達される。その後Ｎ１ｉｎ＞Ｎ１ｏｕｔになった時点
でエンジン３側動力のみが油圧ポンプ５に伝達される。
すなわち、第２の一方向クラッチ２では、電動機４の回
転よりエンジン３による回転が高くなった（Ｎ２ｉｎ＜
Ｎ２ｏｕｔ）ことにより電動機４の動力は内輪２ｃから
外輪２ｄに伝達されなくなる。このように本発明に係る
油圧ポンプ駆動装置は、エンジン３と電動機４の回転を
調整することで、一つの油圧ポンプ５をエンジン３また
は電動機４の動力で駆動することができ、エンジンで駆
動される油圧ポンプと電動機で駆動される第２の油圧ポ
ンプの二つの油圧ポンプを並列配置させる必要がなく、
そのための配管をする必要がない。更に、二つの油圧ポ
ンプの切換え駆動するための複雑な制御装置を必要とし
ない。しかも上述したように二つの一方向クラツチ１、
２を用いることによりエンジンから電動機あるいはこの
逆による動力切換えを機械的に切換えることができ、簡
単で確実な切換えを可能にするとともにショックなくス
ムーズに切換えることができる。なお、上記実施形態で
は、第１の一方向クラッチ１の出力軸１bに油圧ポンプ
５を接続したが、第２の一方向クラッチ２の出力軸２b
に油圧ポンプ５を接続してもよい。また、上記実施形態
では、各出力軸を歯車１ｆ、歯車２ｆ（連結手段）で直
接接続させたが、スプロケットとチエーン等による適宜
の手段で接続させるようにしたものであってもよい。ま
たこの連結手段として、各出力軸間を減速機で接続させ
てもよく、この場合減速機の減速比によってエンジン３
と電動機４の動力切換え時の回転数比率を変更すること
ができる。例えば図２に本発明に係る油圧ポンプ駆動装
置の他の実施形態を模式的に図示するように、遊星減速
機６で連結手段を構成するようにしてもよい。この場合
は電動機４をコンパクトに配置することができる。ここ
でエンジン３と電動機４での動力負担について説明する
と、電動機４の高出力のものは大きさ、重量、電源容
量、コストの面から採用できない。特に、車両に搭載し
た作業機を駆動するために電動機４を車両に搭載しなけ
ればならない場合には、上記点で制約を受ける。そこ
で、電動機４で動力負担する場合は、動力負荷の低い領
域で使用し、動力負荷の高い領域ではエンジン３によつ
て動力負担をさせるように、前記回転による動力切換え
をするようにして使用するようにしている。
【発明の効果】請求項１に係る本発明の油圧ポンプ駆動
装置は、以上のように構成し作用するものであるから、
一つの油圧ポンプをエンジンまたは電動機の動力で駆動
することができ、エンジンで駆動される油圧ポンプと電
動機で駆動される第２の油圧ポンプの二つの油圧ポンプ
を並列配置させる必要がない。また、そのための配管を
する必要がない。更に、二つの油圧ポンプの切換え駆動
するための複雑な制御装置を必要とせず、エンジンから
電動機あるいはこの逆による動力切換えを機械的に切換
えることができることから、簡単で確実な切換えを可能
にするとともにショックなくスムーズな切換えを可能に
することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic pump driving device. 2. Description of the Related Art There are construction machines such as a mobile crane, an aerial work vehicle, and an excavator as working machines provided with a hydraulic pump driving device. Since these construction machines are mounted on a vehicle, a hydraulic pump is driven by a traveling engine of the vehicle to operate each hydraulic actuator. When these construction machines are driven by a hydraulic pump driven by engine power, noise from the engine and emission control must be taken. Therefore, a hydraulic power source from a second hydraulic pump driven by an electric motor as a power source instead of the engine is required. The operation of each hydraulic actuator of the construction machine can be performed by the operator. However, such a construction machine requires two hydraulic pumps, a hydraulic pump driven by an engine and a second hydraulic pump driven by an electric motor. Hydraulic pumps must be arranged in parallel. Also, extra pipes must be used for this purpose. Further, a control device for switching and driving the two hydraulic pumps is required, and the control is complicated. For example, if oil pressure is supplied from two hydraulic pumps simultaneously, the amount of excess oil supply will be excessive, so a relief valve with a large flow rate, a flow control valve, etc. will be required to take measures against this, The energy loss increases and the efficiency decreases. Further, when switching the supply of the hydraulic pressure from the hydraulic pump by the engine to the supply of the hydraulic pressure from the second hydraulic pump by the electric motor, or vice versa, it is necessary to take measures to smoothly switch the hydraulic pressure without shock. An object of the present invention is to provide a hydraulic pump driving device that can solve such a problem. In order to achieve the above object, a hydraulic pump driving apparatus according to a first aspect of the present invention has an input shaft and an output shaft, and rotates the input shaft with respect to the rotation of the output shaft. A first one-way clutch and a second one-way clutch that enable power transmission from the input shaft to the output shaft only when the power is high, the engine being connected to the input shaft of the first one-way clutch, Connect the motor to the input shaft of the one-way clutch,
A hydraulic pump is connected to an output shaft of the first one-way clutch or the second one-way clutch, and both output shafts are connected by connecting means, so that the hydraulic pump is driven to rotate by an electric motor or an engine. It is a feature. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hydraulic pump driving device according to the present invention is shown in FIG. 1 and will be described below. FIG. 1 is an explanatory view schematically illustrating a hydraulic pump driving device according to the present invention. In FIG. 1, reference numeral 1 denotes a first one-way clutch, which includes an input shaft 1a, an output shaft 1b, an inner race 1c, an outer race 1d, a sprag 1e, and a gear 1f. The input shaft 1a is connected to the inner ring 1c, and the output shaft 1b is connected to the outer ring 1d. Inner ring 1c and outer ring 1d
Between the inner ring 1c and the outer ring 1d only when the rotation of the inner ring 1c is higher than the rotation of the outer ring 1d (N1in ≧ N1out). I have. Conversely, the rotation of the inner wheel 1c is lower than the rotation of the outer wheel 1d (N1in <N1o).
At ut), no power is transmitted from the inner wheel 1c to the outer wheel 1d. A gear 1f is arranged on the outer ring 1d. 2 is a second one-way clutch, which is a first one-way clutch 1
Input shaft 2a, output shaft 2b, inner ring 2c, outer ring 2
d, a sprag 2e, and a gear 2f. The input shaft 2a is connected to the inner ring 2c, and the output shaft 2b is connected to the outer ring 2d. Cams called sprags 2e are evenly arranged between the inner ring 2c and the outer ring 2d, and the rotation of the inner ring 2c is higher than the rotation of the outer ring 2d (N2in
Power can be transmitted from the inner ring 2c to the outer ring 2d only when ≧ N2out). Conversely, when the rotation of the inner wheel 2c is lower than the rotation of the outer wheel 2d (N2in <N2out), no power is transmitted from the inner wheel 2c to the outer wheel 2d. A gear 2f is arranged on the outer ring 2d. First one-way clutch 1
And the second one-way clutch 2 are connected so that the gears 1f and 2f can mesh with each other to transmit power. Therefore, the output shaft 1b and the output shaft 2b are connected by the gear 1f and the gear 2f via the outer ring 1d and the outer ring 2d. That is, the gear 1f and the gear 2f correspond to the connecting means according to the first aspect. An engine 3 is connected to an input shaft 1a of the first one-way clutch 1, and an electric motor 4 is connected to an input shaft 2a of the second one-way clutch 2. A hydraulic pump 5 is connected to one output shaft 1b. As the engine 3, a traveling engine of a vehicle equipped with a working machine is usually used, but a dedicated engine may be used. The electric motor 4 may be driven by a battery power source mounted on the vehicle,
It may be driven by an external power supply. However, the two motive powers are not arranged apart from each other because the first one-way clutch 1 and the second one-way clutch 2 are connected by the connecting means. The hydraulic pump driving device according to the present invention configured as described above operates as follows. First, the case where the engine 3 is idling and the electric motor 4 is stopped will be described. In this case, since the electric motor 4 is stopped, the rotation of the engine 3 is changed from the input shaft 1a to the inner ring 1c and the sprag 1
e, power is transmitted to the output shaft 1b via the outer ring 1d. Therefore, the hydraulic pump 5 is driven to rotate by the power of the engine 3. On the other hand, the outer ring 2d of the second one-way clutch 2 is driven by the rotation of the outer ring 1d of the first one-way clutch 1 by the gear 1f and the gear 2f.
The rotation of the inner ring 2c is lower than the rotation of the outer ring 2d although the motor is rotated by the connection of f (the electric motor 4 is in a stopped state).
Since (N2in <N2out), only the outer ring 2d idles. Next, a case will be described in which the electric motor 4 is rotationally driven to gradually increase the rotation while the engine 3 is kept idling. By gradually increasing the rotation of the motor 4, N2in = N
From the point in time when 2out is reached, the power on the motor 4 side is
Power is transmitted from a to the output shaft 1b via the inner ring 2c, the sprag 2e, the outer ring 2d, and the outer ring 1d. Then N2in>
At the time of N2out, only the power of the electric motor 4 is transmitted to the hydraulic pump 5. That is, in the first one-way clutch 1, since the rotation of the electric motor 4 becomes higher than the idling rotation of the engine 3 (N1in <N1out), the power of the engine 3 is not transmitted from the inner wheel 1c to the outer wheel 1d. Here, the case where the engine 3 is gradually rotated from the idling state while the power of the electric motor 4 is being transmitted to the hydraulic pump 5 will be described. When the rotation of the engine 3 is gradually increased and N1in = N1out, the power of the engine 3 is transferred from the input shaft 1a to the inner ring 1
Power is transmitted to the output shaft 1b via the c, sprag 1e, and outer ring 1d. Thereafter, when N1in> N1out, only the engine 3 side power is transmitted to the hydraulic pump 5.
That is, in the second one-way clutch 2, the rotation of the engine 3 becomes higher than the rotation of the electric motor 4 (N2in <
N2out), the power of the electric motor 4 is not transmitted from the inner wheel 2c to the outer wheel 2d. As described above, the hydraulic pump driving device according to the present invention can drive one hydraulic pump 5 by the power of the engine 3 or the electric motor 4 by adjusting the rotation of the engine 3 and the electric motor 4, and is driven by the engine. There is no need to arrange two hydraulic pumps, a hydraulic pump and a second hydraulic pump driven by an electric motor, in parallel,
There is no need to provide piping for that. Furthermore, a complicated control device for switching the two hydraulic pumps is not required. Moreover, as described above, two one-way clutches 1,
By using 2, the power can be switched mechanically from the engine to the electric motor or vice versa, enabling simple and reliable switching and smooth switching without shock. In the above embodiment, the hydraulic pump 5 is connected to the output shaft 1b of the first one-way clutch 1, but the output shaft 2b of the second one-way clutch 2 is connected.
May be connected to the hydraulic pump 5. In the above embodiment, the output shafts are directly connected by the gear 1f and the gear 2f (connection means). However, the output shafts may be connected to the sprocket by appropriate means such as a chain. As this connecting means, each output shaft may be connected by a speed reducer.
And the rotation speed ratio at the time of power switching of the electric motor 4 can be changed. For example, as shown in FIG. 2 schematically showing another embodiment of the hydraulic pump driving device according to the present invention, the connection means may be constituted by the planetary reduction gear 6. In this case, the electric motor 4 can be arranged compactly. Here, the power burden on the engine 3 and the electric motor 4 will be described. A high-output electric motor 4 cannot be adopted in terms of size, weight, power supply capacity, and cost. In particular, when the electric motor 4 must be mounted on the vehicle in order to drive the work machine mounted on the vehicle, the above point is restricted. Therefore, when the power is to be borne by the electric motor 4, the power is used in a region where the power load is low, and in a region where the power load is high, the power is switched by the rotation so that the power is borne by the engine 3. Like that. According to the first aspect of the present invention, the hydraulic pump driving apparatus according to the present invention is constructed and operates as described above.
One hydraulic pump can be driven by the power of the engine or the electric motor, and there is no need to arrange two hydraulic pumps, the hydraulic pump driven by the engine and the second hydraulic pump driven by the electric motor, in parallel. Also, there is no need to provide piping for this. Further, a complicated control device for switching and driving the two hydraulic pumps is not required, and the power can be switched mechanically from the engine to the electric motor or vice versa. Smooth switching can be performed without shock.
【図面の簡単な説明】
【図１】本発明に係る油圧ポンプ駆動装置の実施形態を
模式的に図示し説明する説明図である。
【図２】本発明に係る油圧ポンプ駆動装置の他の実施形
態について模式的に図示し説明する説明図である。
【符号の説明】
１ 一方向クラッチ
２ 一方向クラッチ
１ａ 入力軸
１ｂ 出力軸
２ａ 入力軸
２ｂ 出力軸
３ エンジン
４ 電動機
５ 油圧ポンプ
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram schematically showing and explaining an embodiment of a hydraulic pump driving device according to the present invention. FIG. 2 is an explanatory view schematically showing and explaining another embodiment of the hydraulic pump drive device according to the present invention. [Description of Signs] 1 One-way clutch 2 One-way clutch 1a Input shaft 1b Output shaft 2a Input shaft 2b Output shaft 3 Engine 4 Electric motor 5 Hydraulic pump
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０４Ｂ 9/02 Ｆ０４Ｂ 17/00 Ａ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F04B 9/02 F04B 17/00 A
Claims (1)
して入力軸の回転が高い時にのみ入力軸から出力軸方向
に動力伝達可能にする第１の一方向クラッチと第２の一
方向クラッチとを備え、第１の一方向クラッチの入力軸
にエンジンを接続し、第２の一方向クラッチの入力軸に
電動機を接続し、第１の一方向クラッチまたは第２の一
方向クラッチの出力軸に油圧ポンプを接続するとともに
両出力軸を連結手段で接続して、前記油圧ポンプを電動
機またはエンジンで回転駆動させるよう構成したことを
特徴とする油圧ポンプ駆動装置。Claims: 1. A first type having an input shaft and an output shaft, and capable of transmitting power from the input shaft to the output shaft only when the rotation of the input shaft is higher than the rotation of the output shaft. A first one-way clutch; a first one-way clutch, an engine connected to an input shaft of the first one-way clutch, and an electric motor connected to an input shaft of the second one-way clutch; A hydraulic pump driving device, wherein a hydraulic pump is connected to an output shaft of a second one-way clutch, and both output shafts are connected by connecting means, so that the hydraulic pump is rotationally driven by an electric motor or an engine. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002042549A JP2003239852A (en) | 2002-02-20 | 2002-02-20 | Hydraulic pump driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002042549A JP2003239852A (en) | 2002-02-20 | 2002-02-20 | Hydraulic pump driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003239852A true JP2003239852A (en) | 2003-08-27 |
Family
ID=27782598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002042549A Pending JP2003239852A (en) | 2002-02-20 | 2002-02-20 | Hydraulic pump driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003239852A (en) |
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| JP2011089537A (en) * | 2009-10-20 | 2011-05-06 | Fuji Heavy Ind Ltd | Working vehicle |
| KR101033879B1 (en) | 2008-11-27 | 2011-05-11 | 현대자동차일본기술연구소 | Hybrid system using automatic transmission |
| CN102431440A (en) * | 2010-09-29 | 2012-05-02 | 富士重工业株式会社 | Drive apparatus for a vehicle |
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| CN110621882A (en) * | 2017-04-27 | 2019-12-27 | 萨乐锐伊塔洛工业有限公司 | Pump assembly with an electric drive and a mechanical drive comprising a gear |
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