EP1245737B1 - Vibrateur hydraulique - Google Patents

Vibrateur hydraulique Download PDF

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Publication number
EP1245737B1
EP1245737B1 EP20020000980 EP02000980A EP1245737B1 EP 1245737 B1 EP1245737 B1 EP 1245737B1 EP 20020000980 EP20020000980 EP 20020000980 EP 02000980 A EP02000980 A EP 02000980A EP 1245737 B1 EP1245737 B1 EP 1245737B1
Authority
EP
European Patent Office
Prior art keywords
fluid
hydraulic
transmission
circuit
construction machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20020000980
Other languages
German (de)
English (en)
Other versions
EP1245737B2 (fr
EP1245737A3 (fr
EP1245737A2 (fr
Inventor
Maximilian Arzberger
Franz Höss
Gerhard Piske
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
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Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Publication of EP1245737A2 publication Critical patent/EP1245737A2/fr
Publication of EP1245737A3 publication Critical patent/EP1245737A3/fr
Application granted granted Critical
Publication of EP1245737B1 publication Critical patent/EP1245737B1/fr
Publication of EP1245737B2 publication Critical patent/EP1245737B2/fr
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Classifications

    • 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

Definitions

  • the invention relates to a construction machine, in particular a vibrator, with at least one hydraulic drive, which is arranged together with a hydraulic pump in a hydraulic circuit, and at least one gear in which a fluid is provided for lubrication and / or cooling, which circulates in a lubrication circuit.
  • Such construction machines have long been used in civil engineering. Such machines usually have a hydraulic motor, since such a hydraulic drive is both robust, and can muster the necessary high torque outputs.
  • the hydraulic motor drives a gearbox with eccentric shafts.
  • the eccentric shafts of the transmission are used to generate a targeted vibration, which is used for example for the introduction of pile material.
  • Such a transmission has a lubricating oil circuit. This ensures a demand-based supply of lubricating oil largely independent of the respective operating position of the machine.
  • a vibration generator with a hydraulic motor that drives an eccentric is known.
  • a part of the pressure fluid supplied to the engine is discharged to lubricate bearing means of the vibrator.
  • the invention has for its object to develop such a machine, so that it is particularly simple, robust and reliable constructed with the same or even improved functionality.
  • the hydraulic circuit is connected to the lubrication circuit and that the fluid is simultaneously provided as hydraulic fluid.
  • the structure of a construction machine, in particular a vibrator simplified considerably.
  • a single combined fluid circuit is provided, which is responsible for both the hydraulic drives and the lubrication.
  • the cost of installation and maintenance are significantly reduced.
  • the operation of the machine is simplified, since now only a single fluid must be provided and provided.
  • an oil can be used as fluid, which fulfills both the necessary properties of a hydraulic fluid with regard to compressibility and the properties of a lubricating oil, in particular with regard to lubrication and cooling.
  • the hydraulic circuit and the lubrication circuit are conductively connected to one another via a distributor block.
  • a distributor block provides a robust connection point for the two circuits and makes it possible that in principle existing machines can be retrofitted.
  • This arrangement is further developed according to the invention in a preferred manner that leads from the hydraulic pump, a common supply line to the manifold block, wherein the hydraulic pump supplies both the hydraulic circuit and the lubrication circuit with fluid. It is thus only a single supply line from the hydraulic pump to the central distribution point, the manifold block to provide.
  • a flow control valve is arranged in the lubrication circuit, in particular between the manifold block and the transmission.
  • a pressure switch is additionally arranged in the lubrication circuit between the distributor block and the transmission.
  • the flow control valve serves as a throttle, with which the relatively high pressure in the hydraulic circuit, which can be up to several 100 bar, is reduced to a necessary, lower pressure value of the lubrication circuit.
  • the pressure in the lubrication circuit can be ten times less than the pressure in the hydraulic circuit or even only a few bar.
  • the pressure switch is used to monitor the pressure, the total of the effort to control and control the fluid circuits is reduced overall by the combination of the two circuits.
  • the invention is further developed by the fact that the transmission has a bottom trough for receiving the fluid and that a lubricating pump is provided, through which fluid can be pumped out of the bottom trough.
  • the invention can thus also be used for conventional, vented gear.
  • the additional lubrication pump has to apply only the relatively low power for the return of the fluid from the transmission back to the fluid reservoir.
  • the return of the fluid from the at least one hydraulic drive and / or from the lubricating pump is conductively connected to a return container, from which the fluid can be discharged via the hydraulic pump. It is to provide only a single return tank or a surge tank for the two circuits. This also brings a further simplification of the structure with it.
  • An additional simplification of the overall structure is inventively achieved in that between the collecting container and the hydraulic pump, a cooler and / or a filter are arranged.
  • a particularly safe operation of the device according to the invention is given by the fact that a purge valve is provided in the lubrication circuit between the manifold block and the transmission, which prevents an inflow of fluid into the transmission with a stationary hydraulic drive.
  • the flush valve may be fed back to the manifold block and / or the at least one hydraulic drive, so that only in operation of the hydraulic drive fluid in the Transmission can get. With a stationary hydraulic drive or with a corresponding reduction in pressure of the fluid supply to the hydraulic drive, the flush valve is closed, so that no fluid can get into the transmission of the manifold block more.
  • a construction machine according to the invention is described with reference to a vibrator 10, the essential components of which are shown in FIG.
  • a vibrator 10 On a mast 2 of a carriage, not shown, a sliding carriage 3 is guided, on which a housing of the gear 22 of the vibrator 10 is attached.
  • a holder 4 At the lower end of the housing of the transmission 22, a holder 4 is mounted, which is used in particular for receiving and introducing Rammgut.
  • Such a vibrator is basically known.
  • the gear 22 comprises for generating vibrations eccentric 5, which are schematically indicated in Fig. 2.
  • the eccentric 5 are over waves and meshing with each other Gear elements in connection and driven by two hydraulic motors 12a, 12b rotating.
  • the imbalances on the eccentrics 5 generate desired vibrations during a rotating movement, which can be used to introduce pile material.
  • the hydraulic motors 12 a, 12 b are flanged to the outside of the housing of the transmission 22.
  • a fluid which according to the invention serves both as hydraulic fluid and as lubricating oil, is guided via a common supply line 32 to a distributor block 30, which represents a line connection between a hydraulic circuit 15 and a lubricating circuit 25.
  • the two hydraulic drives 12a, 12b supplied via hydraulic supply lines 17a, 17b with the fluid.
  • the return of the fluid takes place via return lines 19a, 19b to the distributor block 30, from which the fluid takes place via a first return line 34.
  • the torques of the hydraulic motors 12a, 12b are transmitted to the shafts of the transmission 22 as intended by means of corresponding drive shafts.
  • the same fluid as in the hydraulic circuit 15 is used in the lubrication circuit 25.
  • the fluid from the distributor block 30 is led via the two alternative supply lines 27a to a flushing valve 28.
  • the purge valve 28 is designed and connected so that this only then opened is when at least one of the two hydraulic motors 12a, 12b is in operation. If there is no pressure on either of the two lines 27a and thus no hydraulic motor 12a, 12b is in operation, then the flushing valve 28 closes, thus preventing the introduction of fluid into the gearbox 22.
  • the purge valve 28 ensures that during operation of at least one of the two hydraulic motors 12a, 12b, fluid is routed into the transmission 22 for lubrication and cooling.
  • the flow control valve 24 has essentially the function of an adjustable throttle, with which both the amount of the fluid supply line and the fluid pressure can be controlled. For example, about 20 to 25 liters of fluid per minute can be injected into the transmission 22 to the desired bearings and cooling points via the flow control valve.
  • the fluid pressure is reduced from a few 100 bar to a few bar.
  • a pressure switch 26 is further arranged, which serves for measuring and monitoring the line pressure.
  • the fluid is introduced for lubrication and cooling to the desired locations in the transmission 22, wherein the fluid collects according to gravity in a bottom pan, not shown. From this, it is pumped off by means of a lubricating line 27d via a lubricating pump 23, which is driven directly by the gear 22 via a corresponding drive shaft. In this way it is ensured that the lubricating pump 23 is operated only when the transmission 22 is put into operation.
  • the lubrication pump 23 provides the sufficient pumping pressure to return the fluid via a second return line 36.
  • Both the first return line 34 and the second return line 36 lead to processing equipment, not shown in detail, which relates in particular to the cooling, filtering, etc.
  • processing equipment not shown in detail, which relates in particular to the cooling, filtering, etc.
  • a return or expansion tank is also provided as a fluid reservoir, from which then the hydraulic pump 14 feeds the fluid again into the combined fluid circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • General Details Of Gearings (AREA)

Claims (9)

  1. Machine de chantier, en particulier vibreur, avec
    - au moins un entraînement hydraulique (12) qui est placé avec une pompe hydraulique (14) dans un circuit hydraulique (15),
    - au moins un mécanisme (22) dans lequel, pour la lubrification et/ou le refroidissement, il est prévu un fluide qui circule dans un circuit de lubrification (25),
    - dans laquelle le circuit hydraulique (15) est relié au circuit de lubrification (25) et le fluide est prévu simultanément comme fluide hydraulique, et
    - dans laquelle une vanne de régulation de débit (24) est prévue dans le circuit de lubrification (25) pour commander la quantité de fluide envoyée au mécanisme (22).
  2. Machine de chantier selon la revendication 1, caractérisée en ce que le circuit hydraulique (15) et le circuit de lubrification (25) sont reliés entre eux par l'intermédiaire d'un bloc distributeur (30).
  3. Machine de chantier selon la revendication 2, caractérisée en ce qu'une conduite d'alimentation commune (32) conduit de la pompe hydraulique (14) au bloc distributeur (30), la pompe hydraulique (14) alimentant en fluide aussi bien le circuit hydraulique (15) que le circuit de lubrification (25).
  4. Machine de chantier selon la revendication 2 ou 3, caractérisée en ce qu'un commutateur de pression (26) est placé dans le circuit de lubrification (25) entre le bloc distributeur (30) et le mécanisme (22).
  5. Machine de chantier selon l'une quelconque des revendications 2 à 4, caractérisée en ce que la vanne de régulation de débit (24) est placée dans le circuit de lubrification (25) entre le bloc distributeur (30) et le mécanisme (22).
  6. Machine de chantier selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le mécanisme (22) comprend un bac de fond pour recevoir le fluide, et en ce qu'il est prévu une pompe de lubrification (23) grâce à laquelle du fluide peut être pompé depuis le bac de fond.
  7. Machine de chantier selon l'une quelconque des revendications 1 à 6, caractérisée en ce que, pour renvoyer le fluide depuis ledit au moins un entraînement hydraulique (12) et/ou depuis la pompe de lubrification (23), ceux-ci sont reliés à un récipient de retour, depuis lequel le fluide peut être évacué par l'intermédiaire de la pompe hydraulique (14).
  8. Machine de chantier selon la revendication 7, caractérisée en ce qu'entre le récipient de retour et la pompe hydraulique (14) sont placés un radiateur et/ou un filtre.
  9. Machine de chantier selon l'une quelconque des revendications 2 à 8, caractérisée en ce que dans le circuit de lubrification (25) est prévue, entre le bloc distributeur (30) et le mécanisme (22), une vanne de rinçage (28) qui empêche un écoulement de fluide vers le mécanisme (22) lorsque l'entraînement hydraulique (12) est à l'arrêt.
EP02000980.9A 2001-03-28 2002-01-16 Vibrateur hydraulique Expired - Lifetime EP1245737B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10115260 2001-03-28
DE2001115260 DE10115260C2 (de) 2001-03-28 2001-03-28 Baumaschine zur Erzeugung von Schwingungen

Publications (4)

Publication Number Publication Date
EP1245737A2 EP1245737A2 (fr) 2002-10-02
EP1245737A3 EP1245737A3 (fr) 2002-12-11
EP1245737B1 true EP1245737B1 (fr) 2007-12-12
EP1245737B2 EP1245737B2 (fr) 2015-09-30

Family

ID=7679370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02000980.9A Expired - Lifetime EP1245737B2 (fr) 2001-03-28 2002-01-16 Vibrateur hydraulique

Country Status (2)

Country Link
EP (1) EP1245737B2 (fr)
DE (2) DE10115260C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053093A1 (de) * 2006-11-10 2008-05-15 Bomag Gmbh Ölschmierung
ATE442915T1 (de) 2007-05-10 2009-10-15 Bauer Maschinen Gmbh Baumaschine zum erzeugen von schwingungen
DE202015002714U1 (de) 2015-04-13 2016-07-14 Liebherr-Werk Nenzing Gmbh Rüttelvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039167A (en) * 1976-08-02 1977-08-02 Zinga Industries Inc. Hydraulic vibrator
US4861252A (en) * 1986-09-11 1989-08-29 International Pipe Machinery Corp. Vibrator type concrete pipe making machines having combined lubrication and cooling system
US5355964A (en) * 1993-07-12 1994-10-18 White John L Pile driving and/or pile pulling vibratory assembly with counterweights
AU692479B2 (en) * 1993-11-30 1998-06-11 Sakai Heavy Industries, Ltd. Vibrating mechanism and apparatus for generating vibrations for a vibration compacting roller with a variable amplitude

Also Published As

Publication number Publication date
EP1245737B2 (fr) 2015-09-30
EP1245737A3 (fr) 2002-12-11
DE10115260A1 (de) 2002-10-24
DE10115260C2 (de) 2003-04-30
DE50211335D1 (de) 2008-01-24
EP1245737A2 (fr) 2002-10-02

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