JP2004359229A - Driving device provided with traveling driving unit and hydraulic working unit - Google Patents

Driving device provided with traveling driving unit and hydraulic working unit Download PDF

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JP2004359229A
JP2004359229A JP2004164786A JP2004164786A JP2004359229A JP 2004359229 A JP2004359229 A JP 2004359229A JP 2004164786 A JP2004164786 A JP 2004164786A JP 2004164786 A JP2004164786 A JP 2004164786A JP 2004359229 A JP2004359229 A JP 2004359229A
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drive
electric motor
pump
drive shaft
unit
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JP4621440B2 (en
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Franz Forster
フォルスター フランツ
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Linde GmbH
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Linde GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07572—Propulsion arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/15—Fork lift trucks, Industrial trucks

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving device having a small required area and an extended range of use. <P>SOLUTION: An electric motor (7), a pump (8), a second electric motor (10) and a second pump (9) driven by the second electric motor are arranged in one group rectangular to a drive shaft (1). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、作業機械、特に産業車両のための駆動装置であって、走行駆動部と作業液圧部とを有しており、走行駆動部が少なくとも１つの走行モータを備えた駆動軸を有しており、作業液圧部が液圧式のポンプを駆動するために設けられた少なくとも１つの電動モータを有しており、該電動モータが、前記駆動軸に少なくとも部分的に組み込まれているか又は駆動軸に直接に配置されている形式のものに関する。   The present invention is a drive device for a working machine, particularly an industrial vehicle, which has a travel drive unit and a work hydraulic pressure unit, and the travel drive unit has a drive shaft provided with at least one travel motor. The working hydraulics comprises at least one electric motor provided for driving a hydraulic pump, said electric motor being at least partially integrated into said drive shaft or It is of the type that is arranged directly on the drive shaft.

このような形式の駆動装置は、ドイツ連邦共和国特許出願公開第１００６３１６７号明細書に基づき公知である。この駆動装置は、走行駆動部及び作業液圧部の主要コンポーネント、つまり、少なくとも１つの走行モータ及び作業液圧部のポンプの少なくとも１つの電動モータのスペースがまとめられているという点において優れている。
ドイツ連邦共和国特許出願公開第１００６３１６７号明細書 A drive of this type is known from DE 100 63 167 A1. This drive is advantageous in that the space for the main components of the travel drive and the working hydraulics, i.e. at least one travel motor and at least one electric motor of the working hydraulic pump, is combined. .
German Patent Application No. 10063167

本発明の課題は、小さな所要面積と同時に拡張された使用範囲を有する、冒頭で述べた形式の駆動装置を提供することである。   It is an object of the invention to provide a drive of the type mentioned at the outset, which has a small footprint and an extended range of use.

この課題を解決するために本発明では、電動モータ及びポンプ、並びに第２の電動モータ及びこの第２の電動モータによって駆動される第２のポンプが、駆動軸に対して直角に配置された１構成群にまとめられているようにした。   In order to solve this problem, according to the present invention, an electric motor and a pump, and a second electric motor and a second pump driven by the second electric motor are arranged at right angles to a drive shaft. It was arranged in the composition group.

即ち、駆動軸と一緒に１構成ユニットを形成し、これにより、走行駆動部だけを有しているのではなく、複数の液圧式の消費装置に供給することのできる、全体として極めてコンパクトな駆動装置を生ぜしめる、ダブルポンプ・ダブルモータユニットが形成される。   In other words, the drive shaft forms one component unit, which makes it possible to supply a plurality of hydraulic consuming devices, rather than having only a traveling drive, and thus a very compact drive as a whole A double pump / double motor unit is created which produces the device.

この場合、２つのポンプは軸方向で２つの電動モータの間に位置しており、このことは、２つのポンプを通流する液圧液を、電動モータを冷却するために簡単に利用することができるという利点を有している。更に、構成コンポーネントが直列に相前後して配置されているこのような構成形式に基づいて、組込みが簡単になる。   In this case, the two pumps are axially located between the two electric motors, which means that the hydraulic fluid flowing through the two pumps is easily used to cool the electric motors It has the advantage that it can be done. Furthermore, integration is simplified on the basis of such a configuration in which the components are arranged one after the other in series.

最初に電動モータを一緒にフランジ締結してから、このユニットに２つのポンプを接続する配置形式も、勿論可能である。但し、この場合はポンプに近い方の電動モータによるポンプから遠い方の電動モータの直結駆動が必要とされている。   Of course, it is also possible to arrange the two motors in this unit after first flange-fastening the electric motors together. However, in this case, direct drive of the electric motor far from the pump by the electric motor closer to the pump is required.

２つのポンプが、共通の吸込み接続部を有する共通のポンプケーシング内に配置されている限り、所要構成部材の数は少なく保持される。   As long as the two pumps are arranged in a common pump housing with a common suction connection, the number of components required is kept low.

特に好適なのは、電動モータとポンプとが互いに同軸的に配置されている、本発明による駆動装置の構成形式である。それにも関わらず、ダブルポンプ・ダブルモータ構成群のコンポーネント間に軸のずれを有する構成形式が可能であるということを排除しないのが望ましい。   Particular preference is given to the configuration of the drive according to the invention, in which the electric motor and the pump are arranged coaxially with one another. Nevertheless, it is desirable not to exclude the possibility of a configuration in which there is an axial offset between the components of the double pump / double motor configuration group.

本発明の有利な構成では、第２の電動モータに放熱式の電子制御モジュールが配置されていてよい。一方又は両方の電動モータ及び／又は１つ又は複数の電気的な走行モータの出力制御装置であってよいこの制御モジュールの冷却は、一方では電動モータ及びフランジ締結されたポンプのケーシングを介して液圧液に流入する排出熱によって行われ且つ他方では周辺空気によって行われる。   In an advantageous embodiment of the invention, a heat-dissipating electronic control module can be arranged on the second electric motor. The cooling of this control module, which can be the output control of one or both electric motors and / or one or more electric travel motors, is achieved on the one hand via the electric motor and the casing of the flanged pump. This is done by the exhaust heat flowing into the pressurized liquid and on the other hand by the surrounding air.

本発明の根底を成す前記課題は、本発明の第２の有利な構成に基づいて、電動モータ及びポンプを駆動軸に対して直角に配置し、更に、これらの電動モータ及びポンプに隣接して、第２の電動モータ及びこの第２の電動モータによって駆動される第２のポンプを設けることによっても解決される。   The object underlying the invention is that, according to a second advantageous configuration of the invention, the electric motor and the pump are arranged at right angles to the drive shaft and, furthermore, adjacent to these electric motors and the pump. , The second electric motor and a second pump driven by the second electric motor.

この場合、走行駆動部の駆動軸と一緒に空間的に１つの共通の駆動装置にまとめられた２つの別個の構成群（ポンプ・モータユニット）が生じる。   In this case, two separate components (pump and motor units) are spatially combined together with the drive shaft of the travel drive into one common drive.

この場合、駆動軸内に十分な構成スペースがある場合は、２つのユニットは少なくとも部分的に駆動軸に組み込まれていてよい。しかし、１つのユニットだけが駆動軸に組み込まれる又は部分的に組み込まれる一方で、第２のユニットは駆動軸にフランジ締結されるということも可能である。   In this case, if there is sufficient configuration space in the drive shaft, the two units may be at least partially integrated into the drive shaft. However, it is also possible that only one unit is integrated or partially integrated into the drive shaft, while the second unit is flanged to the drive shaft.

有利には、第２の電動モータ及び第２のポンプは、第１の電動モータ及び第１のポンプに対して軸平行に配置されている。   Advantageously, the second electric motor and the second pump are arranged axially parallel to the first electric motor and the first pump.

第１のポンプ及び／又は第２のポンプに駆動電動モータの放熱式の電子制御モジュールが固定されている限りは、熱に敏感な電子構成部材の冷却は液圧液によって簡単に得られる。   As long as the heat-dissipating electronic control module of the drive electric motor is fixed to the first pump and / or the second pump, cooling of the heat-sensitive electronic components is easily obtained by hydraulic fluid.

本発明の前記両構成では、２つのポンプが一緒に、１つ又は複数の消費装置を備えた作業液圧部に供給することができる。この作業液圧部は、フォークリフトのリフトシリンダ及びチルトシリンダであってよい。但し、特に好適なのは、第２のポンプが有利には作業機械の操舵液圧部に供給するために設けられている本発明の構成である。   In both configurations of the invention, the two pumps can together supply a working hydraulic unit with one or more consuming devices. The working hydraulic section may be a lift cylinder and a tilt cylinder of a forklift. However, particular preference is given to the configuration of the invention in which the second pump is advantageously provided for supplying the steering hydraulics of the work machine.

２つのポンプが歯車ポンプ、特に環状歯車ポンプとして形成されている限りは、スペース節約型の構成形式及び僅かなノイズ発生に関する利点が得られる。   As long as the two pumps are formed as gear pumps, in particular as ring gear pumps, the advantages of a space-saving design and low noise are obtained.

冒頭で述べた形式の、１つのダブルポンプ・ダブルモータユニットを備えた本発明の構成でも、２つの別個のポンプ・モータユニットを備えた本発明の構成でも、基本的にはポンプがそれぞれ電動モータの半径方向内側に配置された構成形式も可能である。   In the configuration according to the invention with one double-pump double-motor unit and in the configuration with two separate pump-motor units of the type described at the outset, the pumps are basically each an electric motor Is also possible.

本発明による駆動装置のコンパクトな構成形式に関して、軸方向で互いに隔てられた２つの走行モータが駆動軸に組み込まれており、これらの走行モータ間に第１の電動モータが配置されていると有利である。それにも関わらず、本発明は、駆動軸が差動歯車伝動装置の後置された単一の走行モータしか有していない駆動装置でも使用可能である。   With regard to the compact design of the drive according to the invention, it is advantageous if two drive motors, which are axially separated from one another, are integrated into the drive shaft and the first electric motor is arranged between these drive motors. It is. Nevertheless, the invention can also be used in drives in which the drive shaft has only a single traction motor followed by a differential gear transmission.

駆動軸の横断面で見て、電動モータ及びポンプがどの角度位置に位置しているのかということは、原則としてどうでもよい。有利な構成では、前記コンポーネントは水平方向で配置されており、例えばこれらのコンポーネントは、修復作業用のカウンタウェイト・フロントシート型フォークリフトの場合、駆動軸の手前に配置されたリフトマストを予め取り外す必要無しに、後ろ向きに駆動軸から引き出すことができるようになっている。   Regarding the cross section of the drive shaft, it does not matter in principle which angle position the electric motor and the pump are located. In an advantageous configuration, the components are arranged horizontally, for example, in the case of counterweight front seat type forklifts for repair work, these components require a prior removal of the lift mast arranged in front of the drive shaft. Without it, it can be pulled out of the drive shaft backwards.

作動液圧部及び／又は操舵液圧部の液圧液用の少なくとも１つのリザーバタンクが、駆動軸に少なくとも部分的に組み込まれているか、又は駆動軸の領域に配置されている限りは、別の利点が得られる。即ち、例えばポンプとリザーバタンクとの間の接続導管を省くことができる。リザーバタンクが駆動軸とまとめられているか又は該駆動軸に固定されている場合、駆動軸は弾性的且つ／又は所定の範囲内で制限されて回転運動可能に作業機械のフレームに固定することができ、この場合、駆動軸とリザーバタンクとの間で有利には相対運動は行われない。更に、駆動軸内に配置された電気的な走行モータは、その廃熱をリザーバタンクの冷却された液圧油に簡単に供給可能である。   As long as at least one reservoir tank for the hydraulic fluid of the working hydraulics and / or the steering hydraulics is at least partially integrated in the drive shaft or arranged in the region of the drive shaft, Is obtained. That is, for example, the connecting conduit between the pump and the reservoir tank can be omitted. If the reservoir tank is integrated with or fixed to the drive shaft, the drive shaft may be resiliently and / or restricted within a predetermined range and rotatably fixed to the work machine frame. In this case, advantageously no relative movement takes place between the drive shaft and the reservoir tank. Furthermore, the electric running motor arranged in the drive shaft can easily supply the waste heat to the cooled hydraulic oil in the reservoir tank.

有利には、リザーバタンク内にフィルタが配置されているので、液圧液を浄化するためには、駆動軸以外の特別なコストは不要である。   Advantageously, since the filter is arranged in the reservoir tank, no special costs other than the drive shaft are required for purifying the hydraulic fluid.

本発明の更に別の有利な構成では、リザーバタンクが作業機械の走行方向で見て駆動軸の後部域に配置されている。これにより、リザーバタンクは外部の影響から保護されて、車両に収納されている。   In a further advantageous embodiment of the invention, the reservoir tank is arranged in the rear area of the drive shaft in the direction of travel of the work machine. As a result, the reservoir tank is stored in the vehicle while being protected from external influences.

リザーバタンクの外側に少なくとも１つの放熱式の電子制御モジュールが固定されている限りは、この制御モジュールの過熱を防止する冷却作用を簡単に得ることができる。   As long as at least one heat-dissipating electronic control module is fixed outside the reservoir tank, a cooling action for preventing overheating of this control module can be easily obtained.

以下に、本発明を実施するための最良の形態を図面につき詳しく説明する。   Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

本発明による駆動装置は駆動軸１を有しており、この駆動軸１は、本発明の実施例では２つの走行モータ２ａ，２ｂを有しており、この場合、これらの走行モータ２ａ，２ｂは、例えば三相非同期モータ又は三相同期モータ等の電動モータとして形成されており且つ減速歯車伝動装置３；４を介して各１つのホイールフランジ５；６を駆動する。   The drive according to the invention has a drive shaft 1, which in the exemplary embodiment of the invention has two travel motors 2a, 2b, in which case these travel motors 2a, 2b. Are, for example, formed as electric motors, such as three-phase asynchronous motors or three-phase synchronous motors, and drive one wheel flange 5; 6 via a reduction gear transmission 3;

両走行モータの間には軸方向で電動モータ７が配置されており、この電動モータ７は、駆動軸１の軸ケーシング１ａの内部に突出して位置している。当該電動モータ７は、液圧式のポンプ８を駆動するために役立ち、このポンプ８は、例えばフォークリフトのリフトシリンダ及びチルトシリンダ等の作業液圧部（図示せず）に供給する。   An electric motor 7 is arranged in the axial direction between the two traveling motors, and the electric motor 7 is positioned so as to protrude inside the shaft casing 1 a of the drive shaft 1. The electric motor 7 serves to drive a hydraulic pump 8, which supplies a working hydraulic part (not shown), for example a lift cylinder and a tilt cylinder of a forklift.

第２の液圧式のポンプ９は、第２の電動モータ１０によって駆動され且つ有利には作業機械の操舵液圧部に供給する。両電動モータ７，１０及び両ポンプ８，９は、駆動軸１に対して直角に向けられており且つこの駆動軸１に部分的に組み込まれた１構成群にまとめられている。電動モータ７，１０及び両ポンプ８，９は、この実施例では互いに同軸的に配置されており、しかも、両ポンプ８，９は、両電動モータ７，１０の間に軸方向で位置している。   A second hydraulic pump 9 is driven by a second electric motor 10 and preferably supplies the steering hydraulics of the work machine. The two electric motors 7, 10 and the two pumps 8, 9 are oriented at right angles to the drive shaft 1 and are combined into one component group which is partially incorporated in the drive shaft 1. The electric motors 7, 10 and the two pumps 8, 9 are arranged coaxially with one another in this embodiment, and the two pumps 8, 9 are located axially between the two electric motors 7, 10. I have.

この実施例では環状歯車ポンプとして構成されたポンプ８，９は、共通のポンプケーシング１１を有しており、このポンプケーシング１１は共通の吸込み接続部１２を有している。   The pumps 8, 9, which are configured as ring gear pumps in this embodiment, have a common pump housing 11, which has a common suction connection 12.

第２の電動モータ１０には、図１において２点鎖線で示し且つ図２において実線で示したように、放熱式の電子制御モジュール１３が固定されていてよく、この電子制御モジュール１３は、例えば電動モータ１０及び／又は電動モータ７の出力制御装置として働く。   As shown by a two-dot chain line in FIG. 1 and a solid line in FIG. 2, a radiation type electronic control module 13 may be fixed to the second electric motor 10. It functions as an output control device for the electric motor 10 and / or the electric motor 7.

図２に示した駆動装置の変化態様では、作業液圧部及び／又は操舵液圧部の液圧液のための、複数の室から成るリザーバタンク１４が駆動軸１に組み込まれており、この場合、リザーバタンクは走行方向で見て駆動軸１の後方に位置している。   In a variant of the drive shown in FIG. 2, a reservoir tank 14 consisting of a plurality of chambers for the hydraulic fluid of the working hydraulics and / or the steering hydraulics is integrated into the drive shaft 1. In this case, the reservoir tank is located behind the drive shaft 1 when viewed in the running direction.

リザーバタンク１４の外側には、（制御モジュール１３に関して択一的又は付加的に）放熱式の電子制御モジュール１５（この場合は例えば電動モータ７の出力制御装置）が固定されていてよい。   A heat-dissipating electronic control module 15 (in this case, for example, the output control of the electric motor 7) may be fixed to the outside of the reservoir tank 14 (alternatively or additionally to the control module 13).

図３に示した本発明による駆動装置の第２実施例では、駆動軸１に対して直角に配置されたダブルポンプ・ダブルモータユニットの位置に、２つの別個のポンプ・モータユニットが設けられている。この場合、第２の電動モータ１０及び第２のポンプ９は、第１の電動モータ７及び第１のポンプ８に対して軸平行に配置されている。   In the second embodiment of the drive device according to the invention shown in FIG. 3, two separate pump / motor units are provided at the position of the double pump / double motor unit arranged at right angles to the drive shaft 1. I have. In this case, the second electric motor 10 and the second pump 9 are arranged axially parallel to the first electric motor 7 and the first pump 8.

両ポンプ８，９には、それぞれ放熱式の制御モジュール１３，１５が固定されているので、圧送される液圧液によって、電動モータ７，１０も、所属の出力制御装置も冷却することができる。   Since the heat-dissipating control modules 13 and 15 are fixed to both pumps 8 and 9, respectively, the electric motors 7 and 10 and the associated output control device can be cooled by the hydraulic fluid to be pumped. .

図３に示した実施例の駆動軸１の横断面を示す図４からは、リザーバタンク１４内にフィルタ１６が配置されているということが認識できる。駆動軸１若しくはリザーバタンク１４の上面には両走行モータ２ａ，２ｂのための出力制御装置として働く放熱式の制御モジュール１７が固定されている。   From FIG. 4, which shows a cross section of the drive shaft 1 of the embodiment shown in FIG. 3, it can be seen that the filter 16 is arranged in the reservoir tank 14. A heat-dissipating control module 17 serving as an output control device for both traveling motors 2a and 2b is fixed to the upper surface of the drive shaft 1 or the reservoir tank 14.

本発明による駆動装置の第１実施例の水平方向縦断面図である。FIG. 1 is a horizontal longitudinal sectional view of a first embodiment of a driving device according to the present invention. 図１に示した駆動装置の変化態様の水平方向縦断面図である。FIG. 3 is a horizontal vertical sectional view of a variation of the driving device shown in FIG. 1. 本発明による駆動装置の第２実施例の水平方向縦断面図である。FIG. 6 is a horizontal longitudinal sectional view of a second embodiment of the driving device according to the present invention. 図３に示した駆動装置を、図３のＩＶ−ＩＶ線に沿って横断して示した図である。FIG. 4 is a diagram showing the driving device shown in FIG. 3 traversing along the line IV-IV in FIG. 3.

符号の説明Explanation of reference numerals

１ 駆動軸、 ２ａ，２ｂ 走行モータ、 ３，４ 減速歯車伝動装置、 ５，６ ホイールフランジ、 ７，１０ 電動モータ、 ８，９ ポンプ、 １１ ポンプケーシング、 １２ 吸込み接続部、 １３，１５，１７ 電子制御モジュール、 １４ リザーバタンク、 １６ フィルタ   Reference Signs List 1 drive shaft, 2a, 2b traveling motor, 3,4 reduction gear transmission, 5,6 wheel flange, 7,10 electric motor, 8,9 pump, 11 pump casing, 12 suction connection, 13,15,17 electronics Control module, 14 reservoir tanks, 16 filters

Claims (16)

作業機械のための駆動装置であって、走行駆動部と作業液圧部とを有しており、走行駆動部が少なくとも１つの走行モータを備えた駆動軸を有しており、作業液圧部が液圧式のポンプを駆動するために設けられた少なくとも１つの電動モータを有しており、該電動モータが、前記駆動軸に少なくとも部分的に組み込まれているか又は駆動軸に直接に配置されている形式のものにおいて、
電動モータ（７）及びポンプ（８）、並びに第２の電動モータ（１０）及びこの第２の電動モータによって駆動される第２のポンプ（９）が、駆動軸（１）に対して直角に配置された１構成群にまとめられていることを特徴とする、走行駆動部及び作業液圧部を備えた駆動装置。 A drive device for a work machine, comprising: a travel drive unit and a work hydraulic unit, wherein the travel drive unit has a drive shaft with at least one travel motor; Has at least one electric motor provided for driving a hydraulic pump, the electric motor being at least partially integrated with or directly disposed on the drive shaft. Type
An electric motor (7) and a pump (8), and a second electric motor (10) and a second pump (9) driven by the second electric motor are arranged at right angles to the drive shaft (1). A drive device including a traveling drive unit and a working hydraulic pressure unit, wherein the drive unit is arranged in one arrangement group. 両ポンプ（８，９）が、両電動モータ（７，１０）の間に軸方向で位置している、請求項１記載の駆動装置。   2. The drive according to claim 1, wherein the two pumps (8, 9) are located axially between the two electric motors (7, 10). 両ポンプ（８，９）が、共通の吸込み接続部（１２）を有する共通のポンプケーシング（１１）内に配置されている、請求項１又は２記載の駆動装置。   3. The drive as claimed in claim 1, wherein the two pumps are arranged in a common pump housing having a common suction connection. 電動モータ（７，１０）及びポンプ（８，９）が、互いに同軸的に配置されている、請求項１から３までのいずれか１項記載の駆動装置。   4. The drive according to claim 1, wherein the electric motors (7, 10) and the pumps (8, 9) are arranged coaxially with one another. 第２の電動モータ（１０）に放熱式の電子制御モジュール（１３）が配置されている、請求項２から４までのいずれか１項記載の駆動装置。   5. The drive according to claim 2, wherein a heat-dissipating electronic control module (13) is arranged on the second electric motor (10). 作業機械のための駆動装置であって、走行駆動部と作業液圧部とを有しており、走行駆動部が少なくとも１つの走行モータを備えた駆動軸を有しており、作業液圧部が液圧式のポンプを駆動するために設けられた少なくとも１つの電動モータを有しており、該電動モータが、前記駆動軸に少なくとも部分的に組み込まれているか又は駆動軸に直接に配置されている形式のものにおいて、
電動モータ（７）及びポンプ（８）が、駆動軸に対して直角に配置されており、これらの電動モータ及びポンプに隣接して第２の電動モータ（１０）及びこの第２の電動モータによって駆動される第２のポンプ（９）が設けられていることを特徴とする、走行駆動部及び作業液圧部を備えた駆動装置。 A drive device for a work machine, comprising: a travel drive unit and a work hydraulic unit, wherein the travel drive unit has a drive shaft with at least one travel motor; Has at least one electric motor provided for driving a hydraulic pump, the electric motor being at least partially integrated with or directly disposed on the drive shaft. Type
An electric motor (7) and a pump (8) are arranged at right angles to the drive shaft, adjacent to these electric motors and pumps a second electric motor (10) and this second electric motor. A drive device comprising a traveling drive unit and a working hydraulic unit, wherein a second pump (9) to be driven is provided. 第２の電動モータ（１０）及び第２のポンプ（９）が、第１の電動モータ（７）及び第１のポンプ（８）に対して軸平行に配置されている、請求項６記載の駆動装置。   The second electric motor (10) and the second pump (9) are arranged axially parallel to the first electric motor (7) and the first pump (8). Drive. 第１のポンプ（８）及び／又は第２のポンプ（９）に、駆動電動モータ（７；１０）の放熱式の電子制御モジュール（１３；１５）が固定されている、請求項６又は７記載の駆動装置。   8. The heat-dissipating electronic control module (13; 15) of the drive electric motor (7; 10) is fixed to the first pump (8) and / or the second pump (9). The driving device as described. 第２のポンプ（９）が作業機械の操舵液圧部に供給するために設けられている、請求項１から８までのいずれか１項記載の駆動装置。   9. The drive according to claim 1, wherein a second pump (9) is provided for supplying the steering hydraulics of the work machine. 両ポンプ（８，９）が歯車ポンプ、特に環状歯車ポンプとして形成されている、請求項１から９までのいずれか１項記載の駆動装置。   10. The drive according to claim 1, wherein both pumps are formed as gear pumps, in particular ring gear pumps. 軸方向で互いに隔てられた２つの走行モータ（２ａ，２ｂ）が駆動軸（１）に組み込まれており、前記走行モータ間に第１の電動モータ（７）が配置されている、請求項１から１０までのいずれか１項記載の駆動装置。   2. The two drive motors (2 a, 2 b), which are axially separated from one another, are integrated into the drive shaft (1), and a first electric motor (7) is arranged between the drive motors. 11. The driving device according to any one of items 1 to 10. 電動モータ（７，１０）及びポンプ（８，９）が水平方向で配置されている、請求項１から１１までのいずれか１項記載の駆動装置。   12. The drive according to claim 1, wherein the electric motor (7, 10) and the pump (8, 9) are arranged horizontally. 作業液圧部及び／又は操舵液圧部の液圧液のための少なくとも１つのリザーバタンク（１４）が、駆動軸（１）に少なくとも部分的に組み込まれているか又は駆動軸（１）の領域に配置されている、請求項１から１２までのいずれか１項記載の駆動装置。   At least one reservoir tank (14) for the hydraulic fluid of the working hydraulics and / or the steering hydraulics is at least partially integrated in the drive shaft (1) or in the region of the drive shaft (1). The drive device according to any one of claims 1 to 12, wherein the drive device is disposed at a position corresponding to the driving direction. フィルタ（１６）がリザーバタンク（１４）内に配置されている、請求項１３記載の駆動装置。   14. The drive according to claim 13, wherein the filter (16) is arranged in the reservoir tank (14). 作業機械の走行方向で見て、リザーバタンク（１４）が駆動軸（１）の後部域に配置されている、請求項１３又は１４記載の駆動装置。   15. The drive device according to claim 13, wherein the reservoir tank (14) is arranged in the rear area of the drive shaft (1) when viewed in the direction of travel of the work machine. リザーバタンク（１４）の外側に、少なくとも１つの放熱式の電子制御モジュール（１５）が固定されている、請求項１３から１５までのいずれか１項記載の駆動装置。   16. The drive according to claim 13, wherein at least one heat-dissipating electronic control module (15) is fixed outside the reservoir tank (14).
JP2004164786A 2003-06-04 2004-06-02 Drive device provided with travel drive unit and working fluid pressure unit Expired - Fee Related JP4621440B2 (en)

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