EP1728564B1 - Générateur de vibrations avec un piston coulissant monté entre des chambres de pression - Google Patents

Générateur de vibrations avec un piston coulissant monté entre des chambres de pression Download PDF

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Publication number
EP1728564B1
EP1728564B1 EP05011642A EP05011642A EP1728564B1 EP 1728564 B1 EP1728564 B1 EP 1728564B1 EP 05011642 A EP05011642 A EP 05011642A EP 05011642 A EP05011642 A EP 05011642A EP 1728564 B1 EP1728564 B1 EP 1728564B1
Authority
EP
European Patent Office
Prior art keywords
piston
control
working piston
vibration generator
fluid
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.)
Not-in-force
Application number
EP05011642A
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German (de)
English (en)
Other versions
EP1728564A1 (fr
Inventor
H.-J. Weber
C. Hagemeyer
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.)
Klemm Bohrtechnik GmbH
Original Assignee
Klemm Bohrtechnik 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 Klemm Bohrtechnik GmbH filed Critical Klemm Bohrtechnik GmbH
Priority to DE502005009362T priority Critical patent/DE502005009362D1/de
Priority to EP05011642A priority patent/EP1728564B1/fr
Priority to AT05011642T priority patent/ATE463306T1/de
Priority to US11/420,041 priority patent/US7810618B2/en
Publication of EP1728564A1 publication Critical patent/EP1728564A1/fr
Application granted granted Critical
Publication of EP1728564B1 publication Critical patent/EP1728564B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B06B1/183—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with reciprocating masses

Definitions

  • the invention relates to a vibration generator according to the preamble of claim 1 with a working piston and a control device with a control piston which is slidably mounted within the working piston, and a construction device with a vibration generator according to the preamble of claim 10.
  • Such vibrators have a variety of applications, such as where bulk goods are to be compacted, e.g. in the packaging industry or also in the production and compaction of castings made of concrete or similar material. Also in the civil engineering for the creation of Erdbohritch or soil compaction a variety of applications are given.
  • two rotating unbalance elements are arranged side by side.
  • An imbalance element is connected to a drive unit, while the second is driven by a transmission.
  • the phase position of the imbalances on the respective unbalanced shafts is adjustable, whereby a propulsion movement of a vibrating plate is infinitely adjustable.
  • the DE 195 23 030 C2 discloses a vibration exciter with a housing in which a movably mounted exciter mass for the vibration generation and a consisting of a piston-cylinder unit drive for the exciter mass are arranged.
  • the exciter mass is rigidly coupled to a hydraulically driven drive piston of the piston-cylinder unit and against the action of variably adjustable in the spring detection spring and damping means back and forth linearly.
  • the GB 920 158 A describes a fluid operated vibration motor having a cylinder member with closed ends and inlet and outlet ports, an axially displaceable in the cylinder member piston having an axial bore, and a valve member which is displaceable within the bore and has a greater length than the piston. Areas are provided on the piston adapted to block the outlet port upon relative movement of the piston relative to the cylinder. Further, passages are provided in the piston communicating with the bore and portions on the valve member arranged to block or open the passageways upon relative movement of the piston and the valve members.
  • the DT 24 45 215 A1 describes a vibrator having a piston slidably seated in a cylinder, the cylinder having an inlet opening and two outlet openings located in the wall of the cylinder.
  • the cylinder or piston is milled, the sleeve forming cooling channels for the flow of driving medium.
  • the DE 39 15 773 A1 discloses a piston vibrator comprising a housing having a cylindrical bore, an air port led laterally to the bore, and a piston longitudinally slidable in the bore.
  • the cylindrical bore extends in the axial height of the air connection asymmetric to the outer wall surface of the housing.
  • a vibrator in which a constant amplitude drive piston is mechanically reciprocated within a housing. Via an air column, the drive piston transmits, as an exciter mass, a vibratory motion to a working piston which is freely movable in the same cylindrical housing and which is coupled to the drive piston via an air column.
  • a further air column is provided, wherein the volume of the two air columns is adjustable, so that the vibrations of the working piston and its amplitude over the air volume of the air columns is variably adjustable.
  • the invention has for its object to provide a vibration generator, which is also driven reliably with incompressible media in a simple structure.
  • a vibration generator which can be operated with an incompressible medium, and thereby can transmit much greater power compared to pneumatic systems with the same size. Due to the simple mechanical design of the control device a trouble-free reliable operation is guaranteed. Thus, time-consuming and costly maintenance, as they often occur in complex electronic control systems omitted.
  • the production of the vibration generator according to the invention is economically feasible, since only mechanical elements are used.
  • the invention thus provides a vibration generator which generates a low level of noise during operation and the individual components have a relatively long service life.
  • the area ratios of the working and control pistons are chosen so that the acceleration forces on the active mass in both directions of movement are equal.
  • the working piston is mounted concentrically in the cylindrical housing. This allows a simple production for a uniform mechanical load during operation.
  • control piston is displaceable between two control piston reversal points, which are predetermined by two abutment regions on the housing.
  • This stop areas can also be formed above and made of a particularly impact-resistant material. The shift between only two reversal points allows simple mechanical movements and ensures reliable control.
  • the housing can also be closed at the end by cover. In this case, the stop areas can be formed by a design of the lid inside, which influence the end position of the control piston.
  • the stop areas are adjustable.
  • the distance traveled by the control piston and thus the time interval per stroke period of the control piston can be varied.
  • the oscillation frequency of the oscillation can be easily adjusted according to the particular application.
  • An adjustment during operation is also conceivable, so that the work process does not have to be interrupted.
  • the adjustable stop areas can be designed in the form of setscrews or adjusting stops, which can be adjusted mechanically or hydraulically from the outside.
  • the working piston is displaceable between two working piston reversal points and the control piston designed so that this reaches its control piston reversal point a defined period of time before the working piston his working piston reversal point on the respective Page reached.
  • the stroke length of the control piston is as large as that of the working piston.
  • a shortening of the stroke length of the control piston can be realized both by a longer extension of the control piston relative to the working piston or by projecting from the Gescouseinnenwandung stop areas.
  • the housing has a fluid flow for supplying a pressurized fluid and, according to the invention, a fluid return for discharging a pressurized fluid.
  • fluid advances or returns can be formed for example as holes in the housing wall. Due to the separate arrangement of fluid flow / return, the pressure fluid can be added or removed in a defined and easily controllable manner in the designated areas.
  • two flow distribution lines are provided, which connect the flow control chamber on the one hand with the first pressure chamber and on the other hand with the second pressure chamber.
  • the main supply line and the two flow distribution lines can be designed as bores within the working piston.
  • the flow control chamber may be formed by the end regions of the main flow line with the distribution lines. This makes it possible in a simple manner, the two pressure chambers to provide a pressure fluid in particular alternately and separately from each other and to ensure a hydraulic independence of the two pressure chambers.
  • a radially circumferential recess for receiving the pressure fluid can be provided in the outer region of the working piston.
  • the main return line and the two return distribution lines can be designed as bores within the working piston.
  • the return control chamber can thereby be formed by end regions of the main return line with the two distribution lines.
  • a radially circumferential recess for receiving the pressurized fluid, which also serves to receive the fluid from the flow.
  • control piston on control areas through which the pressurized fluid from the flow control chamber either to a flow distribution line or the other flow distribution line is conductive.
  • control regions can be passed through a simple displacement of the control piston relative to the working piston, the pressure fluid defined in one of the two pressure chambers, or shut off the supply of fluid.
  • control piston further control areas through which the pressurized fluid from one of the two pressure chambers in the return control chamber via one of the two return distribution lines can be conducted.
  • control areas through which the pressurized fluid from one of the two pressure chambers in the return control chamber via one of the two return distribution lines can be conducted.
  • control piston is mounted centrally in the working piston.
  • This storage ensures optimum power distribution, which ensures good efficiency. Furthermore, such storage can reduce wear processes and thereby extend the life of the device. This eliminates costly repair and maintenance intervals.
  • a central storage and manufacturing technology is easy to implement, whereby the manufacturing cost can be reduced.
  • control piston is designed to be longer than the working piston.
  • time intervals per stroke of the control piston become shorter than that of the working piston.
  • the control piston thus reaches its reversal point earlier than the working piston and can therefore already initiate the reversal of the flow direction of the pressure fluid, when the working piston has not yet reached the housing inner wall.
  • a stop of the working piston on the housing wall is thus prevented and avoided in this way disturbing impact noise and wear effects.
  • the vibration generator according to the invention is provided according to the invention in a construction device according to the patent claim 11.
  • the construction equipment may in particular be a drilling device or a vibration bear for introducing piles, planks etc. into the ground.
  • the drilling progress can be improved if the drilling action is assisted by an oscillating movement of the drilling tool.
  • the time required to create the hole can be significantly reduced and the economy can be increased.
  • the competitiveness of the company is improved in this way.
  • the operating personnel and the environment is less burdened due to the lower noise.
  • the load on the material due to massive mechanical forces, hard soil material and damp weather is extremely high, so that the low wear of the construction equipment according to the invention has a positive effect on the service life and lowers the operating costs.
  • the vibration generator according to the invention can also be advantageously used in a Vibrationsbär or other equipment for tillage.
  • the vibration generator 1 comprises a housing 20, a linearly displaceable working piston 2 concentrically mounted therein, and a control piston 3 which can be displaced concentrically in the working piston 2.
  • the housing 20 comprises a housing jacket 27 which has bores for the fluid flow 6 and the fluid return 17, as well as a left cover 4 and a right cover 5. These are provided with a first stop region 21 and a second stop region 22, which end regions of the control piston 3 define.
  • the working piston 2 forms with the housing 20, a first and a second pressure chamber 11, 12.
  • a conduit system consisting of two independent channel arrangements.
  • a channel arrangement is used to supply the pressurized fluid in one of the two pressure chambers 11, 12 and includes a main flow line 7 and a first and second flow distribution line 9, 10.
  • the main flow line 7 opens into the flow receptacle 25 for receiving the pressurized fluid from the fluid flow 6.
  • Die first flow distribution line 9 opens into the first pressure chamber 11, while the second flow distribution line 10 opens into the second pressure chamber 12.
  • the second line system serves to discharge the pressurized fluid from the pressure chambers 11, 12 and includes a main return line 16 and two return Distribution lines 13, 14.
  • the first return distribution line 13 opens into the first pressure chamber 11, while the second return distribution line 14 opens into the second pressure chamber 12.
  • the main return line 16 is connected via the return intake 26 with the fluid return 17 to the outflow of the pressurized fluid.
  • the control piston 3 has a first control region 23 and a second control region 24, which are formed as control edges.
  • the first control section 23 opens or blocks the main supply line and the flow distribution lines 9, 10, while the second control section 29 connects the main return line 16 to one of the two return distribution lines 13, 14 by displacement.
  • the pressure fluid flows through the fluid flow 6 and the main flow line 7 in the flow control chamber 8, whereby the control piston 3 is pushed by the building up in the flow control chamber 8 pressure within the working piston 2 to the right and in the flow control chamber. 8 strikes right.
  • the pressure of the pressure fluid builds up on the first flow distribution line 9 in the first pressure chamber 11 and pushes the piston 2 to the right.
  • the pressure fluid in the second pressure chamber 12 passes via the second return distribution line 14 into the return control chamber 15 and from there via the main return line into the fluid return 17.
  • Fig. 3 moves the working piston 2 to the right, so that the control piston 3 abuts on the right cover 5 at the second stop portion 22.
  • Fig. 4 the control piston 3 remains in its position while the working piston 2 continues to move to the right due to the application of pressure to the middle position and from there due to its inertia.
  • the control piston 3 reaches the center position with respect to the working piston 2, in which neither the first pressure chamber 11 has a connection to the fluid flow 6 nor the second pressure chamber 12 has a connection to the fluid return 17.
  • the working piston is moved by its inertia a little further to the right, thereby changing the pressurization of the control piston.
  • the control piston is moved to the left again; As a result, the pressure conditions on the working piston change and the direction of movement of the working piston is reversed.
  • the pressure fluid passes through the right movement of the working piston 2 in the right area of the flow control chamber 8, whereby the control piston 3 is pressed by the building up in the flow control chamber 8 pressure within the working piston 2 to the left and in the flow control chamber 8 abuts on the left.
  • the pressure of the pressure fluid in the second pressure chamber 12 builds up and pushes the working piston 2 to the left.
  • the pressure fluid in the first pressure chamber 11 flows via the first return distribution line 13 into the return control chamber 15 and from there via the main return line 16 into the fluid return 17.
  • the working piston 2 may be formed with a defined high mass, while the control piston 3 is substantially smaller and with significantly lower mass, such as by using a light metal, is formed.

Claims (10)

  1. Générateur (1) de vibrations avec un piston de frappe (2) qui est monté mobile en va-et-vient entre au moins deux chambres de pression (11, 12) dans un boîtier (20), dans lequel, en fonction de la position du piston de frappe (2), un fluide sous pression peut être envoyé en alternance, et au moyen d'un dispositif de commande, dans l'une des chambres de pression (11, 12), et le piston de frappe (2) peut être mis en mouvement alternatif pour produire des vibrations, et
    le dispositif de commande comprend un piston de commande (3) qui est monté mobile à l'intérieur du piston de frappe (2),
    caractérisé
    en ce que le boîtier (20) comprend un retour (17) de fluide unique pour évacuer le fluide sous pression,
    en ce que, dans le piston de frappe (2), sont prévues une conduite de retour principale (16) qui relie le retour (17) de fluide à une chambre (15) de commande de retour, et deux conduites (13, 14) de distribution de retour qui relient la chambre (15) de commande de retour d'une part à la première chambre de pression (11) et d'autre part à la deuxième chambre de pression (12).
  2. Générateur de vibrations selon la revendication 1, caractérisé en ce que le piston de commande (3) peut être déplacé entre deux points d'inversion de piston de commande, qui sont imposés par deux zones de butée (21, 22) sur le boîtier (20).
  3. Générateur de vibrations selon la revendication 2, caractérisé en ce que les zones de butée (21, 22) sont réglables.
  4. Générateur de vibrations selon l'une quelconque des revendications 1 à 3, caractérisé
    en ce que le piston de frappe (2) peut être déplacé entre deux points d'inversion de piston de frappe, et
    en ce que le piston de commande (3) est conçu de telle manière que celui-ci atteigne son point d'inversion de piston de commande un intervalle de temps prédéterminé avant que le piston de frappe (2) n'atteigne son point d'inversion de piston de frappe du côté concerné.
  5. Générateur de vibrations selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le boîtier (20) comprend une arrivée (6) de fluide pour introduire un fluide sous pression.
  6. Générateur de vibrations selon l'une quelconque des revendications 1 à 5, caractérisé en ce que, dans le piston de frappe (2), sont prévues une conduite d'arrivée principale (16) qui relie l'arrivée (6) de fluide à une chambre (8) de commande d'arrivée, et deux conduites (9, 10) de distribution d'arrivée qui relient la chambre (8) de commande d'arrivée d'une part à la première chambre de pression (11) et d'autre part à la deuxième chambre de pression (12).
  7. Générateur de vibrations selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le piston de commande (3) comprend des zones de commande (23, 24) à travers lesquelles le fluide sous pression peut être envoyé de la chambre (8) de commande d'arrivée à la première conduite (9) de distribution d'arrivée ou à l'autre conduite (10) de distribution d'arrivée.
  8. Générateur de vibrations selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le piston de commande (3) est monté au centre dans le piston de frappe (2).
  9. Générateur de vibrations selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le piston de commande (3) est réalisé plus long que le piston de frappe (2).
  10. Engin de chantier, en particulier engin de forage ou mouton vibrant, caractérisé en ce qu' au moins un générateur (1) de vibrations selon l'une quelconque des revendications 1 à 11 est prévu.
EP05011642A 2005-05-30 2005-05-30 Générateur de vibrations avec un piston coulissant monté entre des chambres de pression Not-in-force EP1728564B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502005009362T DE502005009362D1 (de) 2005-05-30 2005-05-30 Schwingungserzeuger mit einem zwischen Druckkammern verschiebbar gelagerten Arbeitskolben
EP05011642A EP1728564B1 (fr) 2005-05-30 2005-05-30 Générateur de vibrations avec un piston coulissant monté entre des chambres de pression
AT05011642T ATE463306T1 (de) 2005-05-30 2005-05-30 Schwingungserzeuger mit einem zwischen druckkammern verschiebbar gelagerten arbeitskolben
US11/420,041 US7810618B2 (en) 2005-05-30 2006-05-24 Vibration generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05011642A EP1728564B1 (fr) 2005-05-30 2005-05-30 Générateur de vibrations avec un piston coulissant monté entre des chambres de pression

Publications (2)

Publication Number Publication Date
EP1728564A1 EP1728564A1 (fr) 2006-12-06
EP1728564B1 true EP1728564B1 (fr) 2010-04-07

Family

ID=35610200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05011642A Not-in-force EP1728564B1 (fr) 2005-05-30 2005-05-30 Générateur de vibrations avec un piston coulissant monté entre des chambres de pression

Country Status (4)

Country Link
US (1) US7810618B2 (fr)
EP (1) EP1728564B1 (fr)
AT (1) ATE463306T1 (fr)
DE (1) DE502005009362D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3417951A1 (fr) 2017-06-19 2018-12-26 Eurodrill GmbH Dispositif et procédé de production d'impulsions de chocs ou de vibrations pour un engin de chantier

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962191B (zh) * 2012-10-18 2014-12-10 中北大学 一种连续水锤冲击振动方法
KR101546056B1 (ko) * 2013-08-09 2015-08-20 이경운 진동발생장치
CN109262290A (zh) * 2018-10-24 2019-01-25 大连乾宜航发科技有限公司 一种可变振幅振频的液驱振动器及变振幅振频方法

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE1768865U (de) 1955-09-07 1958-06-19 Hermann Wacker Als handgeraet ausgebildeter schwingungserreger.
GB920158A (en) 1960-05-25 1963-03-06 Dehavilland Aircraft Canada Vibrator motor
US3604087A (en) 1970-03-13 1971-09-14 Beloit Corp Antideflection roll
US4031812A (en) * 1974-03-08 1977-06-28 Nikolai Vasilievich Koshelev Hydraulic vibrator for actuator drive
US4026193A (en) * 1974-09-19 1977-05-31 Raymond International Inc. Hydraulically driven hammer system
DE3838639A1 (de) * 1988-11-15 1990-05-17 Hemscheidt Maschf Hermann Hydraulisches schlagwerk
DE3915773A1 (de) 1989-05-13 1990-11-15 Netter Gmbh Kompakter kolbenvibrator
DE19523030C2 (de) 1995-06-24 2000-02-17 Ammann Verdichtung Gmbh Schwingungserreger, Verfahren zur mechanischen Schwingungserzeugung. sowie Vibrtationsplatte
NZ516798A (en) 2002-07-24 2004-07-30 Bantry Ltd Sonic drilling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3417951A1 (fr) 2017-06-19 2018-12-26 Eurodrill GmbH Dispositif et procédé de production d'impulsions de chocs ou de vibrations pour un engin de chantier
US10730075B2 (en) 2017-06-19 2020-08-04 Eurodrill Gmbh Device and method for generating percussive pulses or vibrations for a construction machine

Also Published As

Publication number Publication date
US20060266028A1 (en) 2006-11-30
US7810618B2 (en) 2010-10-12
DE502005009362D1 (de) 2010-05-20
EP1728564A1 (fr) 2006-12-06
ATE463306T1 (de) 2010-04-15

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