EP0736140B1 - Distributeur a tiroir pour pompe a matieres epaisses a deux cylindres - Google Patents

Distributeur a tiroir pour pompe a matieres epaisses a deux cylindres Download PDF

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Publication number
EP0736140B1
EP0736140B1 EP94928398A EP94928398A EP0736140B1 EP 0736140 B1 EP0736140 B1 EP 0736140B1 EP 94928398 A EP94928398 A EP 94928398A EP 94928398 A EP94928398 A EP 94928398A EP 0736140 B1 EP0736140 B1 EP 0736140B1
Authority
EP
European Patent Office
Prior art keywords
slide valve
cylinders
pipe
wear
conveying
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
EP94928398A
Other languages
German (de)
English (en)
Other versions
EP0736140A1 (fr
Inventor
Karl Schlecht
Hellmut Hurr
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
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 Putzmeister AG filed Critical Putzmeister AG
Publication of EP0736140A1 publication Critical patent/EP0736140A1/fr
Application granted granted Critical
Publication of EP0736140B1 publication Critical patent/EP0736140B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0233—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers
    • F04B7/0258—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having an orbital movement, e.g. elbow-pipe type members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0084—Component parts or details specially adapted therefor
    • F04B7/0088—Sealing arrangements between the distribution members and the housing
    • F04B7/0096—Sealing arrangements between the distribution members and the housing for pipe-type distribution members
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86847—Pivoted valve unit
    • Y10T137/86855—Gate
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87788—With valve or movable deflector at junction
    • Y10T137/87804—Valve or deflector is tubular passageway

Definitions

  • the invention relates to a slide device for a pump with two push-pull delivery cylinders for conveying thick matter, which are fed to the pump via a material feed container, with an engaging in the material feed container, substantially C-shaped curved swivel tube, with its one upper end Connected to a rigid conveying line via a rotary pipe connection and is rotatably arranged about an axis substantially parallel to the axes of the conveying cylinders by means of a reversing mechanism such that its other lower end, which is equipped with a wear ring, alternately connected to the openings in the rear wall of the material feed container Connects feed cylinder and can be pressed there by means of a pressure or tensioning device against the edge of the openings of an intermediate wear plate, the reversing mechanism being on the outside of the rear wall of the material feed Contains reversing lever arranged above the feed cylinder, one end of which can be rigidly connected to the upper end of the swivel tube, and at the other end of which two drive
  • Slider devices of this type are particularly suitable because of their compact design for truck-mounted concrete pumps, in which the delivery pipe adjacent to the slide housing forms a connection to the conveyor mast resting on the front part of the chassis and in which the material feed container is separated from the can be easily loaded from the rear end of the chassis.
  • the parts of the slide device which are exposed to high wear are easily accessible from the top of the material feed container and can therefore be easily replaced.
  • the reversing lever is actuated with double-acting cylinders, which are acted upon alternately on the bottom and rod side with pressure oil during the reciprocating stroke.
  • the hydraulic cylinders are mounted on the cylinder side and the rod side each with a tab on a bearing block of the chassis or the reversing lever, with play in the bearing points for bridging a certain wear path.
  • the articulation points of the drive cylinders tend to deflect prematurely because of the high loads that occur and that the wear path that can be bridged in the area of the bearing points is relatively small, so that only a relatively small amount of wear in the wear ring and in the wear plate is permissible.
  • the object of the invention is to develop a slide device of the type specified at the outset which can bridge a large wear path and which is nevertheless able to absorb the bending forces occurring during the reversing process with simple means with simple means.
  • the drive cylinders are supported at their delivery cylinder-side and at their switching lever-side bearing points by means of ball heads in ball sockets, that the drive cylinders enclose an obtuse angle open to the rear wall in their actuating direction and that the reversing lever projects from a support arm projecting on the delivery line side on which an extension pipe connected to the upper end of the swivel pipe can be supported.
  • the swivel tube and the extension tube are detachably rigidly connected to one another at a flange at the upper end of the swivel tube, the extension tube projecting linearly in the direction of the delivery line over the flange and connected to the delivery line on the rotary pipe connection on the Support arm rests.
  • the support arm with its end preferably bearing a bearing shell, can lie loosely against the extension tube or be detachably connected to the extension tube.
  • a further advantageous embodiment of the invention provides that the flange, together with the swivel tube and the extension tube, is detachably connected to a part of the reversing lever having the support arm, for example by means of two clamping screws.
  • the swivel tube and / or the extension tube can thus be removed from the concrete pump in a few steps, for example for maintenance purposes, without the material feed container and the reversing lever having to be dismantled.
  • the drive cylinders are single-acting plunger cylinders, the plunger pistons of which can be acted upon alternately by the pressure medium.
  • the advantage of the plunger cylinder can be seen above all in its robust construction and the resulting maintenance-free operation.
  • the ball heads according to the invention it is possible to vary the obtuse angle enclosed between the drive cylinders in a wide range, for example between 177 ° and 145 °, depending on the state of wear of the wear plate and / or the wear ring, while at the same time achieving that due to the mutual angular position of the drive cylinder, a force component pressing the wear ring onto the wear plate is exerted on the swivel tube.
  • the wear ring arranged on the swivel tube end consists of a homogeneous wear-resistant cast or sintered material, preferably of a wear-resistant cast steel.
  • a preferred embodiment or alternative embodiment of the invention provides that the wear ring and / or the wear plate consists of a porous ceramic material, preferably of oxide ceramic, the capillary pores of which are filled with a metal, preferably with a light metal, such as aluminum, as a toughness-increasing binder.
  • the two-cylinder thick matter pump shown in the drawing is intended for use in truck-mounted concrete pumps. It essentially consists of two delivery cylinders 10, with delivery pistons 12 driven hydraulically in push-pull, a material feed container 14 and a pusher device 20 which engages with a C-shaped swivel tube 16 from above into the material feed container 14 and can be actuated with a reversing mechanism 18 connected in the lower region via openings 22 to the rear wall 24 of the material feed container 14, the openings 22 on the inside of the material feed container 14 being delimited by an eyeglass-shaped wear plate 26.
  • material is removed from the material feed container 14 in the direction of the Arrow 32 is sucked through the open opening 22 into the relevant delivery cylinder 10, while material is transported via the other delivery piston 12 in the direction of the arrows 34, 36, 38 through the swivel tube 16 into a delivery line located behind the rear wall 24 of the material feed container 14.
  • the swivel pipe 16 is connected via a flange 40 to an extension pipe 42, which in turn is connected via a pipe connection, not shown, to a delivery line, not shown, for example a concrete placing boom.
  • the flange 40 is detachably connected by means of two clamping screws 44 to the reversing lever 46 of the reversing mechanism 18, which has at its lower end two bearing points 48, which are designed as ball sockets, for the connection of one piston-side spherical head 50 each of the two drive cylinders 52 of the reversing mechanism 18 at its lower end .
  • the drive cylinders 52 are supported with a further ball head 54 in a bearing point 56 which is fixed to the delivery cylinder and is designed as a ball socket.
  • the drive cylinders 52 can be pressurized with pressure oil on one side via the connections 58 and contain a plunger 60 which supports the ball head 50.
  • a support arm 64 is welded onto the delivery line side of the reversing lever 46, the free end of which points upward and carries a bearing shell 66 in which the extension tube 42 connected to the pivot tube 16 is supported.
  • the support arm 64 absorbs the bending moments occurring during the pumping and swiveling operation on the reversing lever 46 and transmits them to the extension tube 42 and the swivel tube 16. Nevertheless, with this arrangement it is achieved that for maintenance purposes or in the event of wear, the extension tube 42 and the swivel tube 16 by loosening the tensioning screws 44 and / or the flange screws 68 can be easily removed without having to remove the reversing lever 46 and its support arm 64.
  • an opening 72 On the underside of the material feed container 14 there is an opening 72 which can be closed with a swivel lid 70 and through which the material feed container 14 can be completely emptied.
  • the invention relates to a slide device for two-cylinder thick matter pumps, in particular for use in mobile concrete pumps.
  • the slide device 20 has a substantially C-shaped curved swivel tube 16, which is connected at its upper end to a delivery line via a pipe rotary connection and is arranged so as to be rotatable about an axis substantially parallel to the axes of the delivery cylinders 10 by means of a reversing mechanism 18, that its lower end, equipped with a wear ring 28, alternately connects to the openings 22 of the delivery cylinder 10 connected to the rear wall of a material feed container 14.
  • the drive cylinders 52 which are expediently designed as plunger cylinders, are supported at their bearing points by means of ball heads in ball sockets and form an obtuse angle open to the rear wall in their actuation direction.
  • a reversing lever is provided which has a support arm 64 on the delivery line side, on which an extension tube 42 connected to the upper end of the swivel tube can be supported.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne un distributeur à tiroir pour pompe à matières épaisses à deux cylindres, notamment pour pompe à béton mobile. Le distributeur à tiroir (20) comporte un tube articulé (16) courbe sensiblement en forme de C, dont l'extrémité supérieure est raccordée par l'intermédiaire d'un joint tournant tubulaire, à une conduite de refoulement, et qui est monté à l'aide d'un mécanisme d'inversion (18) de manière à tourner autour d'un axe sensiblement parallèle aux axes des cylindres d'alimentation (10), pour que son extrémité inférieure, pourvue d'une bague d'usure (28) soit raccordée en alternance aux ouvertures (22) pratiquées dans les cylindres d'alimentation raccordés à la paroi arrière d'un réservoir d'alimentation en matériau (14). Afin de pouvoir ponter une grande trajectoire d'usure du tube articulé (16), les cylindres de commande (52) qui se présentent de manière appropriée sous forme de pistons plongeurs, sont montés au niveau de leurs points d'appui (48, 56) au moyen de sphères (50, 54) dans des coussinets sphériques et forment, dans leur sens de fonctionnement, un angle obtus ouvert par rapport à la paroi arrière (24). Il est également prévu un levier d'inversion (46) qui comporte un bras de support (64) situé côté conduite de refoulement, sur lequel peut s'appuyer un tuyau de prolongation (42) raccordé côté conduite de refoulement à l'extrémité supérieure du tube articulé.

Claims (10)

  1. Distributeur à tiroir pour une pompe, comprenant deux cvlindres de refoulement (10) fonctionnant en exploitation symétrique pour le transport de matières épaisses amenées à la pompe par l'intermédiaire d'un réservoir de chargement de matières (14), un tube articulé (16) courbé sensiblement en C et s'engageant dans le réservoir de chargement de matières (14), dont l'extrémité supérieure est rattachée, par l'intermédiaire d'un raccord à tubes tournant, à une conduite de transport et montée de manière à pouvoir tourner au moyen d'un mécanisme de renversement (18) autour d'un axe sensiblement parallèle aux axes des cylindres de refoulement, de telle facon que son autre extrémité inférieure équipée d'une bague d'usure se raccorde alternativement aux ouvertures (22) des cylindres de refoulement (10) rattachés à la paroi arrière (24) du réservoir de chargement de matières (14), où elle peut être appliquée au moyen d'un dispositif de compression ou de serrage (62) contre le bord des ajours d'une plaque d'usure (26) intercalée, le mécanisme de renversement (18) comprenant un levier de changement de marche (46) disposé sur la face extérieure de la paroi arrière (24) du réservoir de chargement de matières (14), au-dessus des cylindres de refoulement (10), dont l'une des extrémités peut être solidarisée avec l'extrémité supérieure du tube articulé (16) et à l'autre extrémité duquel deux cylindres d'entraînement (52) orientés sensiblement transversalement par rapport aux cylindres de refoulement (10) et à la conduite de transport (42), s'appuyant dans des directions opposées sur des paliers (56) solidaires des cylindres de refoulement, et pouvant être actionnés en sens opposé, sont articulés avec les extrémités (50) de leurs pistons (60) ou tiges de piston tournées l'une vers l'autre, caractérisé en ce que les cylindres d'entraînement (52) reposent, à leurs points d'appui (48, 56) situés du côté des cylindres de refoulement et du côté du levier de changement de marche, avec des têtes sphériques (50, 54) dans des coussinets sphériques (48, 56), que les cylindres d'entraînement (52) renferment, dans leur direction de manoeuvre, un angle obtus ouvert en direction de la paroi arrière (24), et que le levier de changement de marche (46) comporte un bras de support (64) en saillie du côté de la conduite de transport, sur lequel peut prendre appui un tube de rallonge (42) raccordé du côté de la conduite de transport à l'extrémité supérieure du tube articulé.
  2. Distributeur à tiroir selon la revendication 1, caractérisé en ce que le tube articulé (16) et le tube de rallonge (42) sont solidarisés de manière détachable avec une bride (40), le tube de rallonge (42) qui dépasse en ligne droite de la bride (40) en direction de la conduite de transport et est rattaché par le raccord à tubes tournant à la conduite de transport, reposant sur le bras de support (64, 66).
  3. Distributeur à tiroir selon la revendication 1 ou 2, caractérisé en ce que le bras de support (64) est appliqué de manière lâche avec son extrémité portant de préférence une coquille de coussinet, contre le tube de rallonge (42).
  4. Distributeur à tiroir selon l'une des revendications 1 à 3, caractérisé en ce que l'extrémité libre du bras de support (64) est couplée de manière amovible avec le tube de rallonge (42).
  5. Distributeur à tiroir selon l'une des revendications 1 à 4, caractérisé en ce que le tube articulé (16) peut être monté de manière amovible sur le levier de changement de marche (46).
  6. Distributeur à tiroir selon l'une des revendications 2 à 5, caractérisé en ce que la bride (40), conjointement avec le tube articulé (16) et le tube de rallonge (42), est rattachée de manière amovible à une partie du levier de changement de marche (46) comportant le bras de support (62).
  7. Distributeur à tiroir selon l'une des revendications 1 à 6, caractérisé en ce que l'angle obtus renfermé entre les axes des cylindres d'entraînement (52) est compris, selon l'état d'usure de la plaque d'usure (26) et/ou de la bague d'usure (28), entre 177° et 140°.
  8. Distributeur à tiroir selon l'une des revendications 1 à 7, caractérisé en ce que la bague d'usure (28) montée sur l'extrémité du tube articulé est constituée d'un matériau de fonte ou d'un matériau fritté homogène résistant à l'usure, de préférence d'un acier moulé résistant à l'usure.
  9. Distributeur à tiroir selon l'une des revendications 1 à 7, caractérisé en ce que la bague d'usure (28) et/ou la plaque d'usure (26) sont constituees d'un matériau céramique poreux de préférence d'une céramique oxydée, dont les pores sont remplis d'un métal, de préférence d'un métal léger tel que l'aluminium.
  10. Distributeur à tiroir selon l'une des revendications 1 à 9, caractérisé en ce que les cylindres d'entraînement (52) à effet simple équipés d'un piston plongeur (60) peuvent être alimentés alternativement en fluide sous pression.
EP94928398A 1993-12-24 1994-09-29 Distributeur a tiroir pour pompe a matieres epaisses a deux cylindres Expired - Lifetime EP0736140B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4344632A DE4344632A1 (de) 1993-12-24 1993-12-24 Schiebervorrichtung für eine Zweizylinder-Dickstoffpumpe
DE4344632 1993-12-24
PCT/EP1994/003250 WO1995018304A1 (fr) 1993-12-24 1994-09-29 Distributeur a tiroir pour pompe a matieres epaisses a deux cylindres

Publications (2)

Publication Number Publication Date
EP0736140A1 EP0736140A1 (fr) 1996-10-09
EP0736140B1 true EP0736140B1 (fr) 1997-12-10

Family

ID=6506334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94928398A Expired - Lifetime EP0736140B1 (fr) 1993-12-24 1994-09-29 Distributeur a tiroir pour pompe a matieres epaisses a deux cylindres

Country Status (7)

Country Link
US (1) US5746247A (fr)
EP (1) EP0736140B1 (fr)
JP (1) JPH09506948A (fr)
KR (1) KR960706608A (fr)
DE (2) DE4344632A1 (fr)
ES (1) ES2111335T3 (fr)
WO (1) WO1995018304A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804863A1 (de) * 1998-02-09 1999-08-12 Putzmeister Ag Schiebervorrichtung für eine Zweizylinder-Dickstoffpumpe
US6443718B1 (en) 2000-02-14 2002-09-03 Multiquip, Inc. Shuttle valve for concrete pump
ES2178939B1 (es) * 2000-11-15 2004-10-01 Jose Alfonso Mendoza Aleson Bomba de hormigonar perfeccionada.
DE10155787A1 (de) * 2001-11-14 2003-05-22 Putzmeister Ag Materialaufgabebehälter für Zweizylinder-Dickstoffpumpen
GB2416569A (en) 2004-07-27 2006-02-01 Clarke Uk Ltd Method of and a pump for pumping drill cuttings
FR2927895B1 (fr) * 2008-02-26 2013-03-22 Concept Travaux Publics Dispositif pour le chargement et le depotage de cuves a liant de vehicules ou d'installations pour travaux publics
US8511639B2 (en) 2010-11-15 2013-08-20 Liqui-Box Corporation Adaptor for use with a valve fitment
CN103470555B (zh) * 2013-09-10 2017-04-05 三一汽车制造有限公司 一种摇摆机构及混凝土泵送设备
CN107642471A (zh) * 2017-11-09 2018-01-30 长沙紫宸科技开发有限公司 污泥泵泵体喂出料装置及其阀芯组件

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Publication number Priority date Publication date Assignee Title
DE2162406C3 (de) * 1971-12-16 1979-03-01 Karl Dipl.-Ing. 7024 Bernhausen Schlecht Schiebervorrichtung fur eine Pumpe mit zwei im Gegentakt arbeitenden Zylindern zum Fördern von Beton o.dgl
DE2614895A1 (de) * 1976-04-07 1977-10-20 Schlecht Karl Beton-rohrweiche
DE2638162A1 (de) * 1976-08-25 1977-11-17 Schlecht Karl Pumpe mit zwei im gegentakt arbeitenden pumpenzylindern zum foerdern von beton o.dgl.
DE2903749C2 (de) * 1979-02-01 1983-11-10 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Kolbenpumpe mit S-förmig gekrümmtem Schwenkrohr
DE2909256A1 (de) * 1979-03-09 1980-09-11 Stetter Gmbh Steuervorrichtung einer mehrzylinderpumpe fuer breiige massen
DE3207160A1 (de) * 1980-12-05 1983-09-08 Elba-Werk Maschinen-Gesellschaft Mbh & Co, 7505 Ettlingen Betonpumpen-rohrweiche
US4502851A (en) * 1982-11-12 1985-03-05 Vaughn Calvin Pivotal discharge apparatus
DE3419832A1 (de) * 1984-05-26 1985-11-28 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Rohrweiche einer dickstoff, insbesondere beton foerdernden doppelkolbenpumpe
DE3524033A1 (de) * 1984-09-25 1986-04-03 Friedrich Wilh. Schwing Gmbh, 4690 Herne Zweizylinder-dickstoffpumpe mit rohrweiche
JPS63176674A (ja) * 1987-01-19 1988-07-20 Ohbayashigumi Ltd ポンプ圧送管路の異常個所検出方法
DE3905366C2 (de) * 1989-02-22 1996-07-11 Schlecht Karl Rohrweiche für Zweizylinder-Dickstoffpumpen
DE4120466A1 (de) * 1990-07-03 1992-01-09 Putzmeister Maschf Materialaufgabebehaelter fuer zweizylinder-dickstoffpumpen

Also Published As

Publication number Publication date
ES2111335T3 (es) 1998-03-01
KR960706608A (ko) 1996-12-09
DE4344632A1 (de) 1995-06-29
US5746247A (en) 1998-05-05
WO1995018304A1 (fr) 1995-07-06
JPH09506948A (ja) 1997-07-08
DE59404794D1 (de) 1998-01-22
EP0736140A1 (fr) 1996-10-09

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