EP1990100B1 - Construction machine generating vibration - Google Patents

Construction machine generating vibration Download PDF

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Publication number
EP1990100B1
EP1990100B1 EP07009412A EP07009412A EP1990100B1 EP 1990100 B1 EP1990100 B1 EP 1990100B1 EP 07009412 A EP07009412 A EP 07009412A EP 07009412 A EP07009412 A EP 07009412A EP 1990100 B1 EP1990100 B1 EP 1990100B1
Authority
EP
European Patent Office
Prior art keywords
transmission
line
lubricant
construction machine
hydraulic
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.)
Active
Application number
EP07009412A
Other languages
German (de)
French (fr)
Other versions
EP1990100A1 (en
Inventor
Franz Seraph Höss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to DE502007001542T priority Critical patent/DE502007001542D1/en
Priority to AT07009412T priority patent/ATE442915T1/en
Priority to EP07009412A priority patent/EP1990100B1/en
Priority to ES07009412T priority patent/ES2331972T3/en
Priority to RU2008116287/03A priority patent/RU2375524C1/en
Priority to US12/149,508 priority patent/US7980788B2/en
Priority to UAA200805958A priority patent/UA89703C2/en
Priority to JP2008122890A priority patent/JP4578537B2/en
Priority to CN200810099148XA priority patent/CN101302762B/en
Priority to KR1020080044035A priority patent/KR101004431B1/en
Publication of EP1990100A1 publication Critical patent/EP1990100A1/en
Application granted granted Critical
Publication of EP1990100B1 publication Critical patent/EP1990100B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/405—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors using vibrating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
    • B06B1/186—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with rotary unbalanced masses
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/102—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables operatively associated with mole-ploughs, coulters
    • E02F5/103—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables operatively associated with mole-ploughs, coulters with oscillating or vibrating digging tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/221—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for generating actuator vibration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19991—Lubrication

Definitions

  • the invention relates to a construction machine, in particular for generating vibrations, according to the preamble of claim 1.
  • a construction machine is formed with a transmission, at least one hydraulic drive, which is arranged to actuate the transmission, and a hydraulic circuit for supplying the hydraulic drive with hydraulic fluid, wherein from the hydraulic circuit branches off at least one lubrication line, by means of which the hydraulic fluid can be supplied as a lubricant.
  • a generic construction machine is from the DE 101 15 260 C2 and the same priority EP 1 245 737 A2 known. These documents teach to connect the hydraulic circuit of a hydraulic drive with the lubrication circuit of a transmission, so that the hydraulic fluid serves as a lubricating oil.
  • the FR 2 775 732 describes a vibrator with a bearing which is lubricated by means of a lubrication circuit.
  • an auxiliary lubrication circuit is provided, which has an additional pump. This additional pump is actuated by means of a drive which also actuates the masses of the vibrator.
  • the GB 1 435 499 discloses a vibrator, for example for driving foundation elements into the ground, which has fluid-driven imbalance masses which are hydrostatically supported.
  • the DE 69 50 437 U describes a hydrodynamic vehicle transmission with a designed for a lower speed range flow converter whose emptying line is controllable.
  • a ship propulsion with a ship propeller whose wings have an adjustable angle of attack For adjusting the angle of attack, a hydraulic actuator is provided. To supply oil to the actuator, a separate storage reservoir is provided, which is connected to a transmission via an intake and a compensation line.
  • a vibrator for homogenizing mixtures which has a combined hydraulic-lubricant circuit is known from US 4,039,167 known.
  • the object of the invention is to develop a generic construction machine so that a high operational reliability is achieved with high versatility.
  • the construction machine according to the invention is characterized in that a metering device is provided on the lubrication line with which a flowing in the lubrication line lubricant flow between the hydraulic circuit and the transmission is adjustable according to an operating condition of the transmission, and with which the supply of lubricant depending on the operating condition of the Geretes is changeable.
  • a basic idea of the invention can be seen to provide a metering device for the lubricant, with which the flowing in the lubrication line lubricant flow between the hydraulic circuit and the transmission in accordance with the operating condition of the transmission selectively adjustable, in particular controllable and / or controllable.
  • the invention is based on the idea that the lubricant requirement of the transmission can be dependent on its operating state.
  • a variable lubricant requirement may arise, for example, from the fact that at higher transmission speeds the lubricant dwells shorter at the lubrication points and / or that a larger amount of heat is dissipate.
  • the inventively variable lubricant flow can ensure reliable lubrication in this context, even at high transmission speeds, while ensuring at lower speeds that no unnecessarily high amount of fluid is withdrawn from the hydraulic circuit and possibly an undesirably large amount of lubricant accumulates in the lubricating oil sump of the transmission.
  • An operating state-dependent lubricant requirement of the transmission can also be given in particular if the removal of lubricant from the transmission is carried out as a function of operating state, in particular speed-dependent.
  • the ratio of the feed rate and the discharge rate of the lubricant to the transmission is always constant regardless of the operating state.
  • the rates can be set the same size. This ensures that the gearbox does not run full of lubricant or run dry even during prolonged operation.
  • the discharge rate from the transmission is greater than the delivery rate into the transmission.
  • compensation means may be provided which return a portion of the discharged lubricant back into the transmission.
  • the speed of the transmission can be understood.
  • the operating state can also be, for example, the level of lubricant in the transmission.
  • the operating state-dependent lubricant supply according to the invention allows a metered forced lubrication of the transmission.
  • the invention makes it possible to operate the construction machine with variable transmission speed with speed-independent, a particularly reliable transmission lubrication is given.
  • a particularly versatile and at the same time reliable construction machine is obtained. If the construction machine is designed to generate vibrations, in particular as a vibrator, the variable transmission speed makes it possible to gently and reliably vibrate the most varied components into the ground, even with variable soil geologies.
  • the metering device has a metering pump which is mechanically coupled to the transmission.
  • the metering pump which provides for the promotion of the lubricant in the transmission, is driven by at least one element of the transmission.
  • the mechanical coupling allows a state-dependent operation of the metering device in a particularly simple and reliable manner. In principle, however, it would also be possible, for example, to detect the operating state of the transmission by means of an electronic sensor and to adjust the lubricant inflow into the transmission by means of an electronic actuator.
  • a lubricant return device is provided, with the lubricant depending on the operating condition of the transmission from the transmission can be discharged.
  • both the supply rate of lubricant into the transmission and the discharge rate of lubricant from the transmission are set to operate state.
  • the lubricant return device has at least one lubricant return line, on which a lubricant return pump is arranged.
  • this lubricant return pump is mechanically coupled to the transmission.
  • the lubricant return pump similar to the metering pump, is mechanically driven by an element of the transmission.
  • the invention In connection with a speed-dependent discharge of lubricant from the transmission, the invention has particularly extensive advantages. If in this case, as known from the prior art, the lubricant supply to the transmission set constant, the pump size of the lubricant return pump would have to be dimensioned so that even at the lowest occurring transmission speed, the accumulated lubricant can be reliably pumped out. However, this involves a certain oversizing of the lubricant return pump with it. In this case, if the transmission is operated at a higher speed, in particular at the rated speed, then the oversized pump would possibly convey more oil than is present in the transmission sump.
  • the supply amount of lubricating fluid in the transmission is adjusted speed dependent.
  • the amount of lubricant supplied and discharged can thus be in a fixed relationship to one another according to the invention.
  • the lubricant return pump does not have to be overdimensioned so that undesired foaming of the oil is counteracted.
  • the amount funded by the metering pump preferably both of the metering pump and the funded by the lubricant return pump amount of lubricant is proportional to the speed of the transmission.
  • the operational reliability can be further increased by the fact that, in particular on the side facing away from the transmission of the lubricant return pump, branches off from the lubricant return line, a compensation line, which opens, preferably via a throttle in the transmission.
  • the compensation line can serve, for example, to return gas components, which may be removed from the transmission by the lubricant return pump, into the transmission.
  • a compensation line can also be counteracted a complete dry running of the transmission.
  • a leak oil line is provided for discharging leak oil from the hydraulic drive and / or from the metering pump.
  • a common drain line is provided for discharging leakage oil from both the hydraulic drive and the metering pump.
  • a relief line is provided, with which the lubricating line, the lubricant return line and / or the leak oil line, in each case via a pressure relief valve, are in line connection, wherein the discharge line opens into the transmission.
  • the lubricant return line is downstream of the lubricant return pump with the relief line in line connection.
  • the lubrication line may branch off from a drain line of the hydraulic circuit. Alternatively or additionally, it may be provided to supply return oil of the hydraulic drive to the transmission.
  • a preferred development of the invention thus consists in that the lubrication line branches off from a return line of the hydraulic circuit. According to this embodiment, the lubricant is diverted from the flow flowing from the hydraulic motor. In the drain line and / or the return line of the hydraulic circuit is given a comparatively low hydraulic pressure, which is particularly suitable for the lubrication function in the rule.
  • it can be provided to supply the transmission with a basic flow from the return line and an operating state-dependent additional flow from the leak oil line.
  • the hydraulic drive is arranged for actuating the transmission.
  • the hydraulic drive is suitably provided on a drive shaft of the transmission.
  • the transmission may be, for example, a rotary transmission, in particular a gear transmission.
  • the hydraulic drive is preferably a hydraulic rotary motor.
  • a particularly versatile and / or powerful construction machine is given by the fact that at least two hydraulic drives for driving the transmission are each provided with a return line.
  • the lubricating line is in line connection with both return lines.
  • a pressure switch is provided on the lubrication line, in particular on the side of the metering pump facing the transmission.
  • At least one imbalance is arranged on the transmission.
  • a plurality of imbalances are provided, the phase position is variable to adjust the vibration amplitude.
  • the construction machine which can also be referred to as a vibrator, it is preferably a harrow, with the components, such as foundation elements, sheet piles and / or tillage tools can be driven into the ground.
  • a holder for a component is preferably provided on the transmission.
  • the construction machine may be an attachment vibrator or a depth vibrator.
  • the construction machine can be provided in particular for soil compaction.
  • the fluids according to the invention are expediently liquids, in particular oil.
  • at least one hydraulic pump is provided which is arranged in the hydraulic circuit.
  • this hydraulic pump is provided on a carrier device on which the transmission is arranged adjustable together with the hydraulic drive. It is particularly advantageous that means for adjusting the rotational speed of the hydraulic drive are provided.
  • the hydraulic pump is expediently provided adjustable.
  • the hydraulic circuit may be formed as an open or closed circuit.
  • the invention also includes a method for creating a sheet pile wall, in which sheet piles are subjected to a mechanical vibration by means of a construction machine according to the invention and driven into the ground.
  • a construction machine according to the invention is in Fig. 1 shown.
  • Trained as a vibrator construction machine has a transmission 3, in which two first imbalances 6 and two second imbalances 6 'are provided for vibration generation.
  • a Hydroschwenkmotor 61 is arranged, by means of which the phase position of the first imbalance 6 relative to the second imbalance 6 'is adjustable.
  • To actuate the Hydroschwenkmotors 61 are provided on this two operating lines 60, 60 'for hydraulic fluid.
  • two hydraulic drives 5, 5 ' are provided which are in mechanical connection with the imbalances 6, 6'.
  • a supply line 51 is arranged on this.
  • a supply line 51' is arranged for supplying hydraulic fluid to the hydraulic drive 5 'at this.
  • a return line 50 or 50' is provided on each of these.
  • a check valve 53 is arranged between the supply line 51 and the return line 50 of the hydraulic drive 5, which allows a flow from the return line 50 into the supply line 51 and blocks a reverse directed current.
  • An analogue designed check valve 53 ' is given between the feed line 51' and the return line 50 'of the hydraulic drive 5'.
  • two hydraulic pumps not shown in the figures are provided, which are connected to the lines 50 and 51 or 50' and 51 'in combination.
  • a lubrication line 10 is provided, which is in line connection both with the return line 50 of the hydraulic drive 5 and with the return line 50 'of the hydraulic drive 5' and thus from the hydraulic drives 5, 5 'returning fluid from the return lines 50, 50' dissipate and can supply the gear 3 as a lubricant.
  • fluid is supplied from the lubrication line 10 to the lubrication points of the transmission 3.
  • a metering pump 16 is arranged on the lubrication line 10. This metering pump 16 is mechanically connected to the transmission 3, in particular the imbalances 6, 6 ', so that the pump speed and thus the pumped by the metering pump 16 lubricant flow is determined by the transmission speed, in particular is proportional thereto.
  • a pressure switch 19 is provided on the lubrication line 10, which closes at a predetermined pressure and thus allows monitoring of a proper lubrication.
  • a lubricant return line 20 is provided which opens into the sump of the transmission 3. Via this lubricant return line 20, lubricant is returned from the transmission 3 to a collection tank, not shown in the figures, from which fluid in turn can be fed by means of the hydraulic pumps into the supply lines 51, 51 'of the hydraulic drives 5, 5'.
  • a lubricant return pump 26 is arranged, which is like the metering pump 16 mechanically connected to the transmission 3, so that their delivery rate is also dependent on the speed of the transmission 3. The speed dependency of the delivery rate of both pumps 16 and 26 ensures that the gear 3 is running during operation neither full of lubricating medium still running dry.
  • a compensation line 28 is connected, which leads via a throttle 27 in the transmission 3 and can serve for example for returning gas fractions from the lubricant return line 20 into the transmission 3.
  • the metering pump 16 is connected via a connecting line 32 with the drain line 30 and optionally also with the drain line 31 of the hydraulic drives 5, 5 'in line connection.
  • the metering pump 16 fluid from the drain lines 30th and / or 31 and feed the gear 3 as a lubricant.
  • the connecting line 32 can also serve for the discharge of leakage oil, which is obtained at the metering pump 16.
  • the device shown has a relief line 40, into which the lubricating line 10 via a pressure limiting valve 41, the lubricant return line 20 via a pressure relief valve 42 and the drain line 36 via a pressure relief valve 43 open.
  • the discharge line 40 leads into the transmission 3 and can discharge fluid from the lines 10, 20 and / or 30 into the transmission 3 for overpressure protection.
  • the device of Fig. 1 has a further pressure switch 39, which is connected to the drain lines 30, 36 in line connection.
  • This pressure switch 39 opens when a predetermined. Pressure. It can thus serve to detect an increase in pressure in the leak-oil lines 30, 36, which indicates a possible malfunction of the hydraulic drives 5, 5 'or of the hydraulic swivel motor 61.
  • the hydraulic drives 5, 5 ' acted upon by the supply lines 51, 51' with pressurized fluid and drive the gearbox 3 at.
  • the fluid discharged by the hydraulic drives 5, 5 ' is discharged via the return lines 50, 50'.
  • At least a portion of the returning fluid is supplied via the lubrication line 10 to the transmission 3 as a lubricant.
  • the metering pump 16, which is mechanically connected to the transmission 3, ensures that the transmission 3 is supplied with a speed-dependent lubricant quantity.
  • lubricant is discharged in the bottom region of the transmission 3 via the lubricant return line 20.
  • the discharged amount is thereby set by means of the lubricant return pump 26, which is also mechanically connected to the transmission 3, gearbox speed dependent.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Paleontology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Vibration Prevention Devices (AREA)
  • Soil Working Implements (AREA)
  • Motor Or Generator Frames (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

The machine has a hydraulic circuit for supplying a hydraulic drive (5) with hydraulic fluid. A lubrication line (10) is branched off from the hydraulic circuit by a transmission (3) can be supplied with hydraulic fluid as a lubricant. Supply of lubricant can be changed depending on an operating condition of the transmission. A dosing device includes a dosing pump (16) that is coupled mechanically to the transmission. A lubricant return device is provided with a lubricant which can be discharged from the transmission depending on the operating condition of the transmission. An independent claim is also included for a method for producing a sheet pile wall.

Description

Die Erfindung betrifft eine Baumaschine, insbesondere zum Erzeugen von Schwingungen, gemäß dem Oberbegriff des Anspruchs 1. Eine solche Baumaschine ist ausgebildet mit einem Getriebe, zumindest einem Hydraulikantrieb, der zum Betätigen des Getriebes angeordnet ist, und einem Hydraulikkreislauf zum Versorgen des Hydraulikantriebes mit Hydraulikfluid, wobei vom Hydraulikkreislauf zumindest eine Schmierleitung abzweigt, mittels welcher dem Getriebe Hydraulikfluid als Schmiermittel zuführbar ist.The invention relates to a construction machine, in particular for generating vibrations, according to the preamble of claim 1. Such a construction machine is formed with a transmission, at least one hydraulic drive, which is arranged to actuate the transmission, and a hydraulic circuit for supplying the hydraulic drive with hydraulic fluid, wherein from the hydraulic circuit branches off at least one lubrication line, by means of which the hydraulic fluid can be supplied as a lubricant.

Eine gattungsgemäße Baumaschine ist aus der DE 101 15 260 C2 und der prioritätsgleichen EP 1 245 737 A2 bekannt. Diese Druckschriften lehren, den Hydraulikkreislauf eines Hydraulikantriebes mit dem Schmierkreislauf eines Getriebes zu verbinden, so dass das Hydraulikfluid als Schmieröl dient.A generic construction machine is from the DE 101 15 260 C2 and the same priority EP 1 245 737 A2 known. These documents teach to connect the hydraulic circuit of a hydraulic drive with the lubrication circuit of a transmission, so that the hydraulic fluid serves as a lubricating oil.

Die FR 2 775 732 beschreibt einen Rüttler mit einem Lager, welches mittels eines Schmierkreislaufes geschmiert wird. Am Schmierkreislauf ist ein Hilfsschmierkreislauf vorgesehen, der eine zusätzliche Pumpe aufweist. Diese zusätzliche Pumpe wird mittels eines Antriebes betätigt, der auch die Massen des Rüttlers betätigt.The FR 2 775 732 describes a vibrator with a bearing which is lubricated by means of a lubrication circuit. On the lubrication circuit, an auxiliary lubrication circuit is provided, which has an additional pump. This additional pump is actuated by means of a drive which also actuates the masses of the vibrator.

Aus der US 4,516,655 geht ein Antriebssystem für ein Fahrzeug mit einem Verbrennungsmotor und einem Hydraulikmotor hervor, welche beide zum Antreiben eines Getriebes verwendet werden können. Der Hydraulikmotor treibt überdies eine Pumpe zum Zuführen von Schmieröl in das Getriebe an.From the US 4,516,655 shows a drive system for a vehicle with an internal combustion engine and a hydraulic motor, both of which can be used to drive a transmission. The hydraulic motor also drives a pump for supplying lubricating oil into the transmission.

Die GB 1 435 499 offenbart einen Vibrator, beispielsweise zum Eintreiben von Gründungselementen in den Boden, welcher fluidbetriebene Unwuchtmassen aufweist, welche hydrostatisch gelagert sind.The GB 1 435 499 discloses a vibrator, for example for driving foundation elements into the ground, which has fluid-driven imbalance masses which are hydrostatically supported.

Die DE 69 50 437 U beschreibt ein hydrodynamisches Fahrzeuggetriebe mit einem für einen unteren Geschwindigkeitsbereich ausgelegten Strömungswandler, dessen Entleerleitung steuerbar ist.The DE 69 50 437 U describes a hydrodynamic vehicle transmission with a designed for a lower speed range flow converter whose emptying line is controllable.

Aus der DE 25 24 808 A geht ein Schiffsantrieb mit einer Schiffsschraube hervor, deren Flügel einen einstellbaren Anstellwinkel aufweisen. Zum Einstellen des Anstellwinkels ist ein hydraulisches Betätigungsorgan vorgesehen. Zur Ölversorgung des Betätigungsorgans ist ein gesonderter Vorratsspeicher vorgesehen, welcher mit einem Getriebe über eine Ansaugleitung und über eine Ausgleichsleitung verbunden ist.From the DE 25 24 808 A is a ship propulsion with a ship propeller whose wings have an adjustable angle of attack. For adjusting the angle of attack, a hydraulic actuator is provided. To supply oil to the actuator, a separate storage reservoir is provided, which is connected to a transmission via an intake and a compensation line.

Die EP 0 534 067 A und die DE 20 2004 019 034 U1 offenbaren hydraulische Maschinen mit Leckölabführungen.The EP 0 534 067 A and the DE 20 2004 019 034 U1 reveal hydraulic machines with leakage oil drains.

Ein Vibrator zur Homogenisierung von Gemischen, welcher einen kombinierten Hydraulik-Schmiermittel-Kreis aufweist, ist aus der US 4,039,167 bekannt.A vibrator for homogenizing mixtures, which has a combined hydraulic-lubricant circuit is known from US 4,039,167 known.

Aufgabe der Erfindung ist es, eine gattungsgemäße Baumaschine so weiterzubilden, dass bei hoher Einsatzvielfalt eine besonders hohe Betriebszuverlässigkeit erreicht wird. The object of the invention is to develop a generic construction machine so that a high operational reliability is achieved with high versatility.

Die Aufgabe wird erfindungsgemäß durch eine Baumaschine mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsbeispiele sind in den abhängigen Ansprüchen angegeben.The object is achieved by a construction machine with the features of claim 1. Preferred embodiments are given in the dependent claims.

Die erfindungsgemäße Baumaschine ist dadurch gekennzeichnet, dass an der Schmierleitung eine Dosiereinrichtung vorgesehen ist, mit welcher ein in der Schmierleitung fließender Schmiermittelstrom zwischen dem Hydraulikkreislauf und dem Getriebe entsprechend einem Betriebszustand des Getriebes einstellbar ist, und mit welcher die Zuführung von Schmiermittel in Abhängigkeit des Betriebszustandes des Getriebes veränderbar ist.The construction machine according to the invention is characterized in that a metering device is provided on the lubrication line with which a flowing in the lubrication line lubricant flow between the hydraulic circuit and the transmission is adjustable according to an operating condition of the transmission, and with which the supply of lubricant depending on the operating condition of the Getriebes is changeable.

Ein Grundgedanke der Erfindung kann darin gesehen werden, eine Dosiereinrichtung für das Schmiermittel vorzusehen, mit welcher der in der Schmierleitung fließende Schmiermittelstrom zwischen dem Hydraulikkreislauf und dem Getriebe entsprechend dem Betriebszustand des Getriebes gezielt einstellbar, insbesondere steuerbar und/oder regelbar ist. Der Erfindung liegt der Gedanke zugrunde, dass der Schmiermittelbedarf des Getriebes von dessen Betriebszustand abhängig sein kann. Ein variabler Schmiermittelbedarf kann sich beispielsweise daraus ergeben, dass bei höheren Getriebedrehzahlen das Schmiermittel kürzer an den Schmierstellen verweilt und/oder dass eine größere Wärmemenge abzuführen ist. Der erfindungsgemäß variable Schmiermittelfluss kann in diesem Zusammenhang eine zuverlässige Schmierung auch bei hohen Getriebedrehzahlen gewährleisten, wobei gleichzeitig bei niedrigeren Drehzahlen sichergestellt ist, dass keine unnötig hohe Fluidmenge aus dem Hydraulikkreislauf abgezogen wird und sich gegebenenfalls eine unerwünscht große Schmiermittelmenge im Schmierölsumpf des Getriebes ansammelt.A basic idea of the invention can be seen to provide a metering device for the lubricant, with which the flowing in the lubrication line lubricant flow between the hydraulic circuit and the transmission in accordance with the operating condition of the transmission selectively adjustable, in particular controllable and / or controllable. The invention is based on the idea that the lubricant requirement of the transmission can be dependent on its operating state. A variable lubricant requirement may arise, for example, from the fact that at higher transmission speeds the lubricant dwells shorter at the lubrication points and / or that a larger amount of heat is dissipate. The inventively variable lubricant flow can ensure reliable lubrication in this context, even at high transmission speeds, while ensuring at lower speeds that no unnecessarily high amount of fluid is withdrawn from the hydraulic circuit and possibly an undesirably large amount of lubricant accumulates in the lubricating oil sump of the transmission.

Ein betriebszustandsabhängiger Schmiermittelbedarf des Getriebes kann insbesondere auch dann gegeben sein, wenn die Schmiermittelabfuhr aus dem Getriebe betriebszustandsabhängig, insbesondere drehzahlabhängig durchgeführt wird. In diesem Fall kann erfindungsgemäß gewährleistet werden, dass das Verhältnis aus der Zuführrate und der Abführrate des Schmiermittels am Getriebe unabhängig vom Betriebszustand stets konstant ist. Insbesondere können die Raten gleich groß eingestellt werden. Hierdurch kann sichergestellt werden, dass das Getriebe auch bei längerem Betrieb weder mit Schmiermittel voll läuft noch trocken läuft. Um ein Volllaufen des Getriebes mit Schmiermittel zu verhindern, ist vorzugsweise vorgesehen, dass die Abführrate aus dem Getriebe größer als die Zufuhrrate in das Getriebe ist. Um in diesem Fall ein Trockenlaufen der Abführpumpe zu verhindern, können Ausgleichsmittel vorgesehen sein, die einen Teil des abgeführten Schmiermittels wieder in das Getriebe zurückleiten.An operating state-dependent lubricant requirement of the transmission can also be given in particular if the removal of lubricant from the transmission is carried out as a function of operating state, in particular speed-dependent. In this case, it can be ensured according to the invention that the ratio of the feed rate and the discharge rate of the lubricant to the transmission is always constant regardless of the operating state. In particular, the rates can be set the same size. This ensures that the gearbox does not run full of lubricant or run dry even during prolonged operation. In order to prevent the transmission from running full of lubricant, it is preferably provided that the discharge rate from the transmission is greater than the delivery rate into the transmission. In order to prevent dry running of the discharge pump in this case, compensation means may be provided which return a portion of the discharged lubricant back into the transmission.

Unter dem Betriebszustand kann beispielsweise die Drehzahl des Getriebes verstanden werden. Der Betriebszustand kann aber beispielsweise auch der Füllstand von Schmiermittel im Getriebe sein.Under the operating condition, for example, the speed of the transmission can be understood. The operating state, however, can also be, for example, the level of lubricant in the transmission.

Mittels der Erfindung kann insbesondere sichergestellt werden, dass nur während des Betriebs des Getriebes Schmiermittel in das Getriebe gelangt, so dass verhindert werden kann, dass das Getriebe insbesondere im Ruhezustand mit Schmiermittel voll läuft. Die betriebszustandsabhängige Schmiermittelzuführung nach der Erfindung erlaubt ein dosiertes Zwangs-Schmieren des Getriebes.By means of the invention it can be ensured, in particular, that lubricant only enters the transmission during the operation of the transmission, so that it can be prevented can that the gearbox runs full of lubricant, especially at rest. The operating state-dependent lubricant supply according to the invention allows a metered forced lubrication of the transmission.

Die Erfindung ermöglicht es, die Baumaschine mit variabler Getriebedrehzahl zu betreiben wobei drehzahlunabhängig eine besonders zuverlässige Getriebeschmierung gegeben ist. Somit wird erfindungsgemäß eine besonders vielseitig einsetzbare und zugleich zuverlässige Baumaschine erhalten. Sofern die Baumaschine zum Erzeugen von Schwingungen, insbesondere als Rüttler, ausgebildet ist, erlaubt es die variable Getriebedrehzahl, unterschiedlichste Bauelemente auch bei variablen Bodengeologien schonend und zuverlässig in den Erdboden einzurütteln.The invention makes it possible to operate the construction machine with variable transmission speed with speed-independent, a particularly reliable transmission lubrication is given. Thus, according to the invention, a particularly versatile and at the same time reliable construction machine is obtained. If the construction machine is designed to generate vibrations, in particular as a vibrator, the variable transmission speed makes it possible to gently and reliably vibrate the most varied components into the ground, even with variable soil geologies.

Besonders vorteilhaft ist es nach der Erfindung, dass die Dosiereinrichtung eine Dosierpumpe aufweist, die mechanisch mit dem Getriebe gekoppelt ist. Gemäß dieser Ausführungsform wird die Dosierpumpe, die für die Förderung des Schmiermittels in das Getriebe sorgt, von zumindest einem Element des Getriebes angetrieben. Die mechanische Kopplung ermöglicht eine zustandsabhängige Betätigung der Dosiereinrichtung in besonders einfacher und zuverlässiger Weise. Grundsätzlich wäre es jedoch auch beispielsweise möglich, den Betriebszustand des Getriebes mittels eines elektronischen Sensors zu erfassen und den Schmiermittelzufluss in das Getriebe mittels eines elektronischen Stellgliedes einzustellen.It is particularly advantageous according to the invention that the metering device has a metering pump which is mechanically coupled to the transmission. According to this embodiment, the metering pump, which provides for the promotion of the lubricant in the transmission, is driven by at least one element of the transmission. The mechanical coupling allows a state-dependent operation of the metering device in a particularly simple and reliable manner. In principle, however, it would also be possible, for example, to detect the operating state of the transmission by means of an electronic sensor and to adjust the lubricant inflow into the transmission by means of an electronic actuator.

Weiterhin ist es nach der Erfindung besonders bevorzugt, dass eine Schmiermittelrückführeinrichtung vorgesehen ist, mit der Schmiermittel in Abhängigkeit des Betriebszustandes des Getriebes aus dem Getriebe abführbar ist. Gemäß dieser Ausführungsform wird sowohl die Zuführrate von Schmiermittel in das Getriebe als auch die Abführrate von Schmiermittel aus dem Getriebe betriebszustandsabhängig eingestellt.Furthermore, it is particularly preferred according to the invention that a lubricant return device is provided, with the lubricant depending on the operating condition of the transmission from the transmission can be discharged. According to this embodiment, both the supply rate of lubricant into the transmission and the discharge rate of lubricant from the transmission are set to operate state.

Besonders vorteilhaft ist es, dass die Schmiermittelrückführeinrichtung zumindest eine Schmiermittelrückführleitung aufweist, an der eine Schmiermittelrückführpumpe angeordnet ist. Vorzugsweise ist diese Schmiermittelrückführpumpe mechanisch mit dem Getriebe gekoppelt. Gemäß dieser Ausführungsform wird die Schmiermittelrückführpumpe, ähnlich wie die Dosierpumpe, durch ein Element des Getriebes mechanisch angetrieben. Grundsätzlich wäre es auch möglich, die Schmiermittelabfuhr aus dem Getriebe über ein elektronisches Stellglied einzustellen, das auf Grundlage des sensorisch erfassten Betriebszustandes betrieben wird.It is particularly advantageous that the lubricant return device has at least one lubricant return line, on which a lubricant return pump is arranged. Preferably, this lubricant return pump is mechanically coupled to the transmission. According to this embodiment, the lubricant return pump, similar to the metering pump, is mechanically driven by an element of the transmission. In principle, it would also be possible to adjust the removal of lubricant from the transmission via an electronic actuator, which is operated on the basis of the sensory detected operating state.

Im Zusammenhang mit einer drehzahlabhängigen Abführung von Schmiermittel aus dem Getriebe weist die Erfindung besonders umfassende Vorteile auf. Würde in diesem Fall, wie aus dem Stand der Technik bekannt, der Schmiermittelzulauf zum Getriebe konstant eingestellt, so müsste die Pumpengröße der Schmiermittelrückführpumpe so dimensioniert werden, dass auch bei niedrigster auftretender Getriebedrehzahl das zugelaufene Schmiermittel zuverlässig abgepumpt werden kann. Dies bringt jedoch eine gewisse Überdimensionierung der Schmiermittelrückführpumpe mit sich. Wird das Getriebe in diesem Fall mit höherer Drehzahl, insbesondere mit der Nenndrehzahl, betrieben, so würde durch die überdimensionierte Pumpe unter Umständen mehr Öl gefördert, als im Getriebesumpf vorhanden ist. Dies wiederum kann unter Umständen zur Folge haben, dass unerwünscht große Luftmengen in die Schmiermittelrückführleitung und von dort in das Hydrauliksystem des Grundgerätes gefördert werden, was zu einer unerwünschten Ölverschäumung führen könnte. Demgegenüber wird nach der Erfindung auch die Zuführmenge von Schmierfluid in das Getriebe drehzahlabhängig eingestellt. Die zugeführte und die abgeführte Schmiermittelmenge können somit nach der Erfindung in einem festen Verhältnis zueinander stehen. Insbesondere muss die Schmiermittelrückführpumpe erfindungsgemäß somit nicht überdimensioniert werden, so dass einer unerwünschten Ölverschäumung entgegengewirkt ist. Zweckmäßigerweise ist jedenfalls die von der Dosierpumpe geförderte Menge, vorzugsweise sowohl die von der Dosierpumpe als auch die von der Schmiermittelrückführpumpe geförderte Schmiermittelmenge proportional zur Drehzahl des Getriebes.In connection with a speed-dependent discharge of lubricant from the transmission, the invention has particularly extensive advantages. If in this case, as known from the prior art, the lubricant supply to the transmission set constant, the pump size of the lubricant return pump would have to be dimensioned so that even at the lowest occurring transmission speed, the accumulated lubricant can be reliably pumped out. However, this involves a certain oversizing of the lubricant return pump with it. In this case, if the transmission is operated at a higher speed, in particular at the rated speed, then the oversized pump would possibly convey more oil than is present in the transmission sump. This, in turn, may have the consequence that undesirably large amounts of air are conveyed into the lubricant return line and from there into the hydraulic system of the basic unit, which could lead to undesirable foaming of the oil. In contrast, according to the invention, the supply amount of lubricating fluid in the transmission is adjusted speed dependent. The amount of lubricant supplied and discharged can thus be in a fixed relationship to one another according to the invention. In particular, according to the invention, therefore, the lubricant return pump does not have to be overdimensioned so that undesired foaming of the oil is counteracted. Conveniently, in any case, the amount funded by the metering pump, preferably both of the metering pump and the funded by the lubricant return pump amount of lubricant is proportional to the speed of the transmission.

Die Betriebszuverlässigkeit kann weiter dadurch erhöht werden, dass, insbesondere auf der dem Getriebe abgewandten Seite der Schmiermittelrückführpumpe, von der Schmiermittelrückführleitung eine Ausgleichsleitung abzweigt, die, vorzugsweise über eine Drossel, in das Getriebe einmündet. Die Ausgleichsleitung kann beispielsweise dazu dienen, Gasanteile, die unter Umständen von der Schmiermittelrückführpumpe aus dem Getriebe abgefördert werden, in das Getriebe zurückzuführen. Mittels einer Ausgleichsleitung kann überdies einem vollständigen Trockenlaufen des Getriebes entgegengewirkt werden.The operational reliability can be further increased by the fact that, in particular on the side facing away from the transmission of the lubricant return pump, branches off from the lubricant return line, a compensation line, which opens, preferably via a throttle in the transmission. The compensation line can serve, for example, to return gas components, which may be removed from the transmission by the lubricant return pump, into the transmission. By means of a compensation line can also be counteracted a complete dry running of the transmission.

Insbesondere um unerwünschte Fluidverluste zu vermeiden ist es vorteilhaft, dass eine Leckölleitung zum Abführen von Lecköl vom Hydraulikantrieb und/oder von der Dosierpumpe vorgesehen ist. Zur Verringerung des apparativen Aufwandes ist es vorteilhaft, dass eine gemeinsame Leckölleitung zum Abführen von Lecköl sowohl vom Hydraulikantrieb als auch von der Dosierpumpe vorgesehen ist.In particular in order to avoid undesirable fluid losses, it is advantageous that a leak oil line is provided for discharging leak oil from the hydraulic drive and / or from the metering pump. To reduce the expenditure on equipment, it is advantageous that a common drain line is provided for discharging leakage oil from both the hydraulic drive and the metering pump.

Ferner ist es nach der Erfindung bevorzugt, dass eine Entlastungsleitung vorgesehen ist, mit welcher die Schmierleitung, die Schmiermittelrückführleitung und/oder die Leckölleitung, jeweils über ein Druckbegrenzungsventil, in Leitungsverbindung stehen, wobei die Entlastungsleitung in das Getriebe einmündet. Hierdurch kann in besonders einfacher Weise eine Überdrucksicherung realisiert werden. Geeigneterweise steht die Schmiermittelrückführleitung unterstromig der Schmiermittelrückführpumpe mit der Entlastungsleitung in Leitungsverbindung.Furthermore, it is preferred according to the invention that a relief line is provided, with which the lubricating line, the lubricant return line and / or the leak oil line, in each case via a pressure relief valve, are in line connection, wherein the discharge line opens into the transmission. As a result, an overpressure protection can be realized in a particularly simple manner. Suitably, the lubricant return line is downstream of the lubricant return pump with the relief line in line connection.

Bei dem Hydraulikfluid, welches dem Getriebe als Schmiermittel zugeführt wird, kann es sich insbesondere um Lecköl des Hydraulikantriebes handeln. In diesem Fall kann die Schmierleitung von einer Leckölleitung des Hydraulikkreises abzweigen. Alternativ oder zusätzlich kann vorgesehen sein, dem Getriebe Rücklauföl des Hydraulikantriebes zuzuführen. Eine bevorzugte Weiterbildung der Erfindung besteht somit darin, dass die Schmierleitung von einer Rücklaufleitung des Hydraulikkreises abzweigt. Gemäß dieser Ausführungsform wird das Schmiermittel aus der vom Hydraulikmotor abfließenden Strömung abgezweigt. In der Leckölleitung und/oder der Rücklaufleitung des Hydraulikkreises ist in der Regel ein vergleichsweise geringer Hydraulikdruck gegeben, der für die Schmierfunktion besonders geeignet ist. Es ist auch möglich, dem Getriebe sowohl Rücklauföl als auch Lecköl als Schmiermittel zuzuführen, so dass eine besonders zuverlässige Schmiermittelversorgung gegeben ist. Beispielsweise kann vorgesehen sein, dem Getriebe eine Grundströmung aus der Rücklaufleitung und eine betriebszustandsabhängige Zusatzströmung aus der Leckölleitung zuzuführen.In the hydraulic fluid which is supplied to the transmission as a lubricant, it can be in particular to leak oil of the hydraulic drive. In this case, the lubrication line may branch off from a drain line of the hydraulic circuit. Alternatively or additionally, it may be provided to supply return oil of the hydraulic drive to the transmission. A preferred development of the invention thus consists in that the lubrication line branches off from a return line of the hydraulic circuit. According to this embodiment, the lubricant is diverted from the flow flowing from the hydraulic motor. In the drain line and / or the return line of the hydraulic circuit is given a comparatively low hydraulic pressure, which is particularly suitable for the lubrication function in the rule. It is also possible to supply the transmission both return oil and leakage oil as a lubricant, so that a particularly reliable lubricant supply is given. For example, it can be provided to supply the transmission with a basic flow from the return line and an operating state-dependent additional flow from the leak oil line.

Nach der Erfindung ist vorgesehen, dass der Hydraulikantrieb zum Betätigen des Getriebes angeordnet ist. Gemäß dieser Ausführungsform ist der Hydraulikantrieb geeigneteniveise an einer Antriebswelle des Getriebes vorgesehen. Bei dem Getriebe kann es sich beispielsweise um ein Drehgetriebe, insbesondere um ein Zahnradgetriebe handeln. Bei dem Hydraulikantrieb handelt es sich vorzugsweise um einen Hydraulikdrehmotor.According to the invention it is provided that the hydraulic drive is arranged for actuating the transmission. According to this embodiment, the hydraulic drive is suitably provided on a drive shaft of the transmission. The transmission may be, for example, a rotary transmission, in particular a gear transmission. The hydraulic drive is preferably a hydraulic rotary motor.

Eine besonders vielseitig einsetzbare und/oder leistungsfähige Baumaschine ist dadurch gegeben, dass zum Antreiben des Getriebes zumindest zwei Hydraulikantriebe mit jeweils einer Rücklaufleitung vorgesehen sind. Insbesondere für eine besonders zuverlässige Schmierung ist es vorteilhaft, dass die Schmierleitung mit beiden Rücklaufleitungen in Leitungsverbindung steht.A particularly versatile and / or powerful construction machine is given by the fact that at least two hydraulic drives for driving the transmission are each provided with a return line. In particular, for a particularly reliable lubrication, it is advantageous that the lubricating line is in line connection with both return lines.

Beispielsweise zur Funktionsprüfung der Schmierung ist es zweckmäßig, dass an der Schmierleitung, insbesondere auf der dem Getriebe zugewandten Seite der Dosierpumpe, ein Druckschalter vorgesehen ist.For example, for functional testing of the lubrication, it is expedient that a pressure switch is provided on the lubrication line, in particular on the side of the metering pump facing the transmission.

Zur besonders einfachen Schwingungserzeugung ist es vorteilhaft, dass am Getriebe zumindest eine Unwucht angeordnet ist. Geeigneterweise sind mehrere Unwuchten vorgesehen, deren Phasenlage zur Einstellung der Schwingungsamplitude veränderbar ist.For particularly simple vibration generation, it is advantageous that at least one imbalance is arranged on the transmission. Suitably, a plurality of imbalances are provided, the phase position is variable to adjust the vibration amplitude.

Bei der erfindungsgemäßen Baumaschine, die auch als Rüttler bezeichnet werden kann, handelt es sich vorzugsweise um ein Bodenbearbeitungsgerät, mit dem Bauelemente, beispielsweise Gründungselemente, Spundbohlen und/oder Bodenbearbeitungswerkzeuge in den Boden eingetrieben werden können. Hierzu ist am Getriebe vorzugsweise eine Halterung für ein Bauelement vorgesehen. Beispielsweise kann es sich bei der Baumaschine um einen Aufsatzrüttler oder um einen Tiefenrüttler handeln. Die Baumaschine kann insbesondere auch zur Bodenverdichtung vorgesehen sein. Bei den erfindungsgemäßen Fluiden handelt es sich zweckmäßigerweise um Flüssigkeiten, insbesondere um Öl. Zum Betätigen des Hydraulikantriebes ist zweckmäßigerweise zumindest eine Hydraulikpumpe vorgesehen, die im Hydraulikkreislauf angeordnet ist. Vorteilhafterweise ist diese Hydraulikpumpe an einem Trägergerät vorgesehen, an welchem das Getriebe mitsamt dem Hydraulikantrieb verstellbar angeordnet ist. Besonders vorteilhaft ist es, dass Mittel zum Einstellen der Drehzahl des Hydraulikantriebes vorgesehen sind. Hierzu ist die Hydraulikpumpe zweckmäßigerweise einstellbar vorgesehen. Nach der Erfindung kann der Hydraulikkreislauf als offener oder als geschlossener Kreislauf ausgebildet sein.In the construction machine according to the invention, which can also be referred to as a vibrator, it is preferably a harrow, with the components, such as foundation elements, sheet piles and / or tillage tools can be driven into the ground. For this purpose, a holder for a component is preferably provided on the transmission. For example, the construction machine may be an attachment vibrator or a depth vibrator. The construction machine can be provided in particular for soil compaction. The fluids according to the invention are expediently liquids, in particular oil. For actuating the hydraulic drive expediently at least one hydraulic pump is provided which is arranged in the hydraulic circuit. Advantageously, this hydraulic pump is provided on a carrier device on which the transmission is arranged adjustable together with the hydraulic drive. It is particularly advantageous that means for adjusting the rotational speed of the hydraulic drive are provided. For this purpose, the hydraulic pump is expediently provided adjustable. According to the invention, the hydraulic circuit may be formed as an open or closed circuit.

Die Erfindung umfasst auch ein Verfahren zum Erstellen einer Spundwand, bei dem mittels einer erfindungsgemäßen Baumaschine Spundbohlen mit einer mechanischen Schwingung beaufschlagt und in den Boden eingetrieben werden.The invention also includes a method for creating a sheet pile wall, in which sheet piles are subjected to a mechanical vibration by means of a construction machine according to the invention and driven into the ground.

Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele näher erläutert, die schematisch in der beigefügten Zeichnung dargestellt sind. In der Zeichnung zeigt:

Fig. 1
den Hydraulikplan einer erfindungsgemäßen Baumaschine.
The invention will be explained in more detail below with reference to preferred embodiments, which are shown schematically in the accompanying drawing. In the drawing shows:
Fig. 1
the hydraulic plan of a construction machine according to the invention.

Eine erfindungsgemäße Baumaschine ist in Fig. 1 dargestellt. Die als Rüttler ausgebildete Baumaschine weist ein Getriebe 3 auf, in dem zur Schwingungserzeugung zwei erste Unwuchten 6 sowie zwei zweite Unwuchten 6' vorgesehen sind. Am Getriebe 3 ist ein Hydroschwenkmotor 61 angeordnet, mittels welchem die Phasenlage der ersten Unwucht 6 relativ zu der zweiten Unwucht 6' einstellbar ist. Zum Betätigen des Hydroschwenkmotors 61 sind an diesem zwei Betriebsleitungen 60, 60' für Hydraulikfluid vorgesehen.A construction machine according to the invention is in Fig. 1 shown. Trained as a vibrator construction machine has a transmission 3, in which two first imbalances 6 and two second imbalances 6 'are provided for vibration generation. On the gear 3, a Hydroschwenkmotor 61 is arranged, by means of which the phase position of the first imbalance 6 relative to the second imbalance 6 'is adjustable. To actuate the Hydroschwenkmotors 61 are provided on this two operating lines 60, 60 'for hydraulic fluid.

Zum Antreiben des Getriebes 3 sind zwei Hydraulikantriebe 5, 5' vorgesehen, die mit den Unwuchten 6, 6' in mechanischer Verbindung stehen. Zum Zuführen von Hydraulikfluid zum Hydraulikantrieb 5 ist an diesem eine Zulaufleitung 51 angeordnet. Analog ist zum Zuführen von Hydraulikfluid zum Hydraulikantrieb 5' an diesem eine Zulaufleitung 51' angeordnet. Zum Abführen von Hydraulikfluid von den Hydraulikantrieben 5 und 5' ist an diesen jeweils eine Rücklaufleitung 50 beziehungsweise 50' vorgesehen. Zwischen der Zulaufleitung 51 und der Rücklaufleitung 50 des Hydraulikantriebs 5 ist ein Rückschlagventil 53 angeordnet, welches einen Strom von der Rückführleitung 50 in die Zulaufleitung 51 zulässt und einen umgekehrt gerichteten Strom sperrt. Ein analog ausgebildetes Rückschlagventil 53' ist zwischen der Zulaufleitung 51' und der Rücklaufleitung 50' des Hydraulikantriebes 5' gegeben. Zum Betätigen der Hydraulikantriebe 5, 5' sind zwei in den Figuren nicht dargestellte Hydropumpen vorgesehen, die mit den Leitungen 50 und 51 beziehungsweise 50' und 51' in Verbindung stehen.To drive the transmission 3, two hydraulic drives 5, 5 'are provided which are in mechanical connection with the imbalances 6, 6'. For supplying hydraulic fluid to the hydraulic drive 5, a supply line 51 is arranged on this. Analogously, for supplying hydraulic fluid to the hydraulic drive 5 'at this a supply line 51' is arranged. For discharging hydraulic fluid from the hydraulic drives 5 and 5 ', a return line 50 or 50' is provided on each of these. Between the supply line 51 and the return line 50 of the hydraulic drive 5, a check valve 53 is arranged, which allows a flow from the return line 50 into the supply line 51 and blocks a reverse directed current. An analogue designed check valve 53 'is given between the feed line 51' and the return line 50 'of the hydraulic drive 5'. For actuating the hydraulic drives 5, 5 ', two hydraulic pumps not shown in the figures are provided, which are connected to the lines 50 and 51 or 50' and 51 'in combination.

Nach der Erfindung ist vorgesehen, Betriebsflüssigkeit für die Hydraulikantriebe 5, 5' auch zur Schmierung des Getriebes 3 einzusetzen. Zu diesem Zweck ist eine Schmierleitung 10 vorgesehen, welche sowohl mit der Rücklaufleitung 50 des Hydraulikantriebes 5 als auch mit der Rücklaufleitung 50' des Hydraulikantriebes 5' in Leitungsverbindung steht und somit von den Hydraulikantrieben 5, 5' rücklaufendes Fluid aus den Rücklaufleitungen 50, 50' abführen und dem Getriebe 3 als Schmiermedium zuführen kann. Im Getriebe 3 wird Fluid aus der Schmierleitung 10 an die Schmierstellen des Getriebes 3 geführt.According to the invention, it is provided to use operating fluid for the hydraulic drives 5, 5 'also for lubricating the transmission 3. For this purpose, a lubrication line 10 is provided, which is in line connection both with the return line 50 of the hydraulic drive 5 and with the return line 50 'of the hydraulic drive 5' and thus from the hydraulic drives 5, 5 'returning fluid from the return lines 50, 50' dissipate and can supply the gear 3 as a lubricant. In the transmission 3, fluid is supplied from the lubrication line 10 to the lubrication points of the transmission 3.

Zum Einstellen der durch die Schmierleitung 10 zum Getriebe 3 geförderten Fluidmenge ist an der Schmierleitung 10 eine Dosierpumpe 16 angeordnet. Diese Dosierpumpe 16 ist mechanisch mit dem Getriebe 3, insbesondere den Unwuchten 6, 6' verbunden, so dass die Pumpendrehzahl und somit der von der Dosierpumpe 16 geförderte Schmiermediumstrom von der Getriebedrehzahl bestimmt wird, insbesondere proportional hierzu ist.For adjusting the amount of fluid delivered through the lubrication line 10 to the transmission 3, a metering pump 16 is arranged on the lubrication line 10. This metering pump 16 is mechanically connected to the transmission 3, in particular the imbalances 6, 6 ', so that the pump speed and thus the pumped by the metering pump 16 lubricant flow is determined by the transmission speed, in particular is proportional thereto.

Im Bereich des Getriebes 3 ist an der Schmierleitung 10 ein Druckschalter 19 vorgesehen, der bei einem vorher bestimmten Druck schließt und somit eine Überwachung einer ordnungsgemäßen Schmierung zulässt.In the region of the transmission 3, a pressure switch 19 is provided on the lubrication line 10, which closes at a predetermined pressure and thus allows monitoring of a proper lubrication.

Zum Abführen von Schmiermittel aus dem Getriebe 3 ist eine Schmiermittelrückführleitung 20 vorgesehen, die in den Sumpf des Getriebes 3 einmündet. Über diese Schmiermittelrückführleitung 20 wird Schmiermittel aus dem Getriebe 3 zu einem in den Figuren nicht dargestellten Sammeltank zurückgeführt, von dem Fluid wiederum mittels der Hydraulikpumpen in die Zulaufleitungen 51, 51' der Hydraulikantriebe 5, 5' eingespeist werden kann. An der Schmiermittelrückführleitung 20 ist eine Schmiermittelrückfuhrpumpe 26 angeordnet, die ebenso wie die Dosierpumpe 16 mit dem Getriebe 3 mechanisch verbunden ist, so dass ihre Förderleistung ebenfalls abhängig von der Drehzahl des Getriebes 3 ist. Die Drehzahlabhängigkeit der Förderleistung beider Pumpen 16 und 26 gewährleistet, dass das Getriebe 3 beim Betrieb weder mit Schmiermedium voll läuft noch trocken läuft.For discharging lubricant from the transmission 3, a lubricant return line 20 is provided which opens into the sump of the transmission 3. Via this lubricant return line 20, lubricant is returned from the transmission 3 to a collection tank, not shown in the figures, from which fluid in turn can be fed by means of the hydraulic pumps into the supply lines 51, 51 'of the hydraulic drives 5, 5'. At the lubricant return line 20, a lubricant return pump 26 is arranged, which is like the metering pump 16 mechanically connected to the transmission 3, so that their delivery rate is also dependent on the speed of the transmission 3. The speed dependency of the delivery rate of both pumps 16 and 26 ensures that the gear 3 is running during operation neither full of lubricating medium still running dry.

Mit der Schmiermittelrückführleitung 20 ist eine Ausgleichsleitung 28 verbunden, die über eine Drossel 27 in das Getriebe 3 führt und beispielsweise zum Rückführen von Gasanteilen aus der Schmiermittelrückführleitung 20 in das Getriebe 3 dienen kann.With the lubricant return line 20, a compensation line 28 is connected, which leads via a throttle 27 in the transmission 3 and can serve for example for returning gas fractions from the lubricant return line 20 into the transmission 3.

Zum Abführen von Lecköl von den beiden Hydraulikantrieben 5, 5' ist eine Leckölleitung 30 vorgesehen. Diese Leckölleitung 30 vereinigt sich mit einer weiteren Leckölleitung 36 des Hydroschwenkmotors 61 zu einer gemeinsamen Leckölrückführleitung. Darüber hinaus ist an den beiden Hydraulikantrieben 5, 5' eine weitere Leckölleitung 31 vorgesehen, welche die beiden Hydraulikantriebe 5, 5' miteinander verbindet.For discharging leakage oil from the two hydraulic drives 5, 5 ', a drain line 30 is provided. This leakage oil line 30 merges with a further drain line 36 of the Hydroschwenkmotors 61 to a common leakage oil return line. In addition, a further drain line 31 is provided on the two hydraulic drives 5, 5 ', which connects the two hydraulic drives 5, 5' with each other.

Die Dosierpumpe 16 steht über eine Verbindungsleitung 32 mit der Leckölleitung 30 und gegebenenfalls auch mit der Leckölleitung 31 der Hydraulikantriebe 5, 5' in Leitungsverbindung. Somit kann die Dosierpumpe 16 Fluid aus den Leckölleitungen 30 und/oder 31 abziehen und dem Getriebe 3 als Schmiermittel zuführen. Die Verbindungsleitung 32 kann jedoch auch zur Abführung von Lecköl dienen, das an der Dosierpumpe 16 anfällt.The metering pump 16 is connected via a connecting line 32 with the drain line 30 and optionally also with the drain line 31 of the hydraulic drives 5, 5 'in line connection. Thus, the metering pump 16 fluid from the drain lines 30th and / or 31 and feed the gear 3 as a lubricant. However, the connecting line 32 can also serve for the discharge of leakage oil, which is obtained at the metering pump 16.

Die in Fig. 1 dargestellte Vorrichtung weist darüber hinaus eine Entlastungsleitung 40 auf, in welche die Schmierleitung 10 über ein Druckbegrenzungsventil 41, die Schmiermittelrückführleitung 20 über ein Druckbegrenzungsventil 42 und die Leckölleitung 36 über ein Druckbegrenzungsventil 43 einmünden. Die Entlastungsleitung 40 führt in das Getriebe 3 und kann zur Überdrucksicherung Fluid aus den Leitungen 10, 20 und/oder 30 in das Getriebe 3 abführen.In the Fig. 1 In addition, the device shown has a relief line 40, into which the lubricating line 10 via a pressure limiting valve 41, the lubricant return line 20 via a pressure relief valve 42 and the drain line 36 via a pressure relief valve 43 open. The discharge line 40 leads into the transmission 3 and can discharge fluid from the lines 10, 20 and / or 30 into the transmission 3 for overpressure protection.

Die Vorrichtung der Fig. 1 weist einen weiteren Druckschalter 39 auf, der mit den Leckölleitungen 30, 36 in Leitungsverbindung steht. Dieser Druckschalter 39 öffnet beim Überschreiten eines vorgegebenen. Druckes. Er kann somit dazu dienen, eine Druckerhöhung in den Leckölleitungen 30, 36 nachzuweisen, die auf eine unter Umständen mögliche Funktionsstörung der Hydraulikantriebe 5, 5' oder des Hydroschwenkmotors 61 schließen lässt.The device of Fig. 1 has a further pressure switch 39, which is connected to the drain lines 30, 36 in line connection. This pressure switch 39 opens when a predetermined. Pressure. It can thus serve to detect an increase in pressure in the leak-oil lines 30, 36, which indicates a possible malfunction of the hydraulic drives 5, 5 'or of the hydraulic swivel motor 61.

Beim Betrieb der in Fig. 1 dargestellten Vorrichtung werden die Hydraulikantriebe 5, 5' über die Zulaufleitungen 51, 51' mit Druckfluid beaufschlagt und treiben das Getriebe 3 an. Das von den Hydraulikantrieben 5, 5' abgegebene Fluid wird dabei über die Rücklaufleitungen 50, 50' abgeführt. Zumindest ein Teil des rücklaufenden Fluides wird über die Schmierleitung 10 dem Getriebe 3 als Schmiermittel zugeführt. Die Dosierpumpe 16, die mechanisch mit dem Getriebe 3 verbunden ist, sorgt dabei dafür, dass dem Getriebe 3 eine drehzahlabhängige Schmiermittelmenge zugeführt wird. Gleichzeitig wird Schmiermittel im Bodenbereich des Getriebes 3 über die Schmiermittelrückführleitung 20 abgeführt. Die abgeführte Menge wird dabei mittels der Schmiermittelrückführpumpe 26, die ebenfalls mechanisch mit dem Getriebe 3 verbunden ist, getriebedrehzahlabhängig eingestellt.When operating the in Fig. 1 The device shown, the hydraulic drives 5, 5 'acted upon by the supply lines 51, 51' with pressurized fluid and drive the gearbox 3 at. The fluid discharged by the hydraulic drives 5, 5 'is discharged via the return lines 50, 50'. At least a portion of the returning fluid is supplied via the lubrication line 10 to the transmission 3 as a lubricant. The metering pump 16, which is mechanically connected to the transmission 3, ensures that the transmission 3 is supplied with a speed-dependent lubricant quantity. At the same time lubricant is discharged in the bottom region of the transmission 3 via the lubricant return line 20. The discharged amount is thereby set by means of the lubricant return pump 26, which is also mechanically connected to the transmission 3, gearbox speed dependent.

Claims (12)

  1. Construction machine, in particular for generating vibrations, comprising
    - a transmission (3),
    - at least one hydraulic drive (5, 5') which is arranged for actuating the transmission (3) and
    - a hydraulic circuit for supplying the hydraulic drive (5, 5') with hydraulic fluid,
    - wherein at least one lubrication line (10) is branched off from the hydraulic circuit, by means of which the transmission (3) can be supplied with hydraulic fluid as a lubricant,
    characterized in that
    - on the lubrication line (10) a dosing device is provided, with which a lubrication flow flowing in the lubrication line between the hydraulic circuit and the transmission (3) is adjustable according to an operation state of the transmission (3) and with which the supply of lubricant can be changed depending on an operating condition of the transmission (3).
  2. Construction machine according to claim 1,
    characterized in that
    the dosing device has a dosing pump (16) that is coupled mechanically to the transmission (3).
  3. Construction machine according to any one of the preceding claims,
    characterized in that
    a lubricant return device is provided, with which lubricant can be discharged from the transmission (3) depending on the operating condition of the transmission (3).
  4. Construction machine according to claim 3,
    characterized in that
    the lubricant return device has at least one lubricant return line (20), on which a lubricant return pump (26) is arranged that is coupled mechanically to the transmission (3).
  5. Construction machine according to claim 4,
    characterized in that
    on the side of the lubricant return pump (26) facing away from the transmission (3) a balancing line (28) is branched off from the lubricant return line (20), which leads into the transmission (3), preferably via a throttle (27).
  6. Construction machine according to any one of the preceding claims,
    characterized in that
    a leak oil line (30) is provided for discharging leak oil from the hydraulic drive (5, 5') and/or from the dosing pump (16).
  7. Construction machine according to any one of the preceding claims,
    characterized in that
    a relief line (40) is provided, with which the lubrication line (10), the lubricant return line (20) and/or the leak oil line (30) are each in line-connection via a pressure-limiting valve (41, 42, 43), with the relief line (40) leading into the transmission (3).
  8. Construction machine according to any one of the preceding claims,
    characterized in that
    the lubrication line (10) is branched off from a return-flow line (50, 50') of the hydraulic circuit.
  9. Construction machine according to any one of the preceding claims,
    characterized in that
    at least two hydraulic drives (5, 5'), each of them containing a return-flow line (50, 50'), are arranged for actuation of the transmission (3), wherein the lubrication line (10) is in line-connection with both return-flow lines (50, 50').
  10. Construction machine according to any one of the preceding claims,
    characterized in that
    a pressure switch (19) is provided on the lubrication line (10), in particular on the side of the dosing pump (16) facing towards the transmission (3).
  11. Construction machine according to any one of the preceding claims,
    characterized in that
    on the transmission (3) at least one unbalanced mass (6, 6') is arranged.
  12. Method for producing a sheet pile wall, in which
    sheet piles are acted upon by mechanical vibration and driven into the ground by means of a construction machine according to any one of the preceding claims.
EP07009412A 2007-05-10 2007-05-10 Construction machine generating vibration Active EP1990100B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE502007001542T DE502007001542D1 (en) 2007-05-10 2007-05-10 Construction machine for generating vibrations
AT07009412T ATE442915T1 (en) 2007-05-10 2007-05-10 CONSTRUCTION MACHINE FOR GENERATING VIBRATIONS
EP07009412A EP1990100B1 (en) 2007-05-10 2007-05-10 Construction machine generating vibration
ES07009412T ES2331972T3 (en) 2007-05-10 2007-05-10 VIBRATION GENERATOR CONSTRUCTION MACHINE.
RU2008116287/03A RU2375524C1 (en) 2007-05-10 2008-04-28 Construction machine and method of erecting cutoff wall
US12/149,508 US7980788B2 (en) 2007-05-10 2008-05-02 Construction machine
UAA200805958A UA89703C2 (en) 2007-05-10 2008-05-07 Construction machine
JP2008122890A JP4578537B2 (en) 2007-05-10 2008-05-09 Construction machine and method for constructing sheet pile wall with the construction machine
CN200810099148XA CN101302762B (en) 2007-05-10 2008-05-12 Construction machine
KR1020080044035A KR101004431B1 (en) 2007-05-10 2008-05-13 Construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07009412A EP1990100B1 (en) 2007-05-10 2007-05-10 Construction machine generating vibration

Publications (2)

Publication Number Publication Date
EP1990100A1 EP1990100A1 (en) 2008-11-12
EP1990100B1 true EP1990100B1 (en) 2009-09-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07009412A Active EP1990100B1 (en) 2007-05-10 2007-05-10 Construction machine generating vibration

Country Status (10)

Country Link
US (1) US7980788B2 (en)
EP (1) EP1990100B1 (en)
JP (1) JP4578537B2 (en)
KR (1) KR101004431B1 (en)
CN (1) CN101302762B (en)
AT (1) ATE442915T1 (en)
DE (1) DE502007001542D1 (en)
ES (1) ES2331972T3 (en)
RU (1) RU2375524C1 (en)
UA (1) UA89703C2 (en)

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CN106192977A (en) * 2016-07-18 2016-12-07 华中科技大学 A kind of hydraulic hybrid dynamic compaction machinery
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Also Published As

Publication number Publication date
JP2008280837A (en) 2008-11-20
RU2375524C1 (en) 2009-12-10
JP4578537B2 (en) 2010-11-10
UA89703C2 (en) 2010-02-25
US20080279638A1 (en) 2008-11-13
ATE442915T1 (en) 2009-10-15
ES2331972T3 (en) 2010-01-21
KR101004431B1 (en) 2010-12-28
KR20080099832A (en) 2008-11-13
CN101302762A (en) 2008-11-12
CN101302762B (en) 2010-09-29
DE502007001542D1 (en) 2009-10-29
EP1990100A1 (en) 2008-11-12
US7980788B2 (en) 2011-07-19

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