EP0171796A2 - Système avec tube pivotant pour pompes à béton - Google Patents

Système avec tube pivotant pour pompes à béton Download PDF

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Publication number
EP0171796A2
EP0171796A2 EP85110166A EP85110166A EP0171796A2 EP 0171796 A2 EP0171796 A2 EP 0171796A2 EP 85110166 A EP85110166 A EP 85110166A EP 85110166 A EP85110166 A EP 85110166A EP 0171796 A2 EP0171796 A2 EP 0171796A2
Authority
EP
European Patent Office
Prior art keywords
swivel
tube
pipe
pumps
sealing ring
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.)
Withdrawn
Application number
EP85110166A
Other languages
German (de)
English (en)
Other versions
EP0171796A3 (fr
Inventor
Horst Bender
Günter Jakob
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.)
Linnhoff & Thesenfitz Maschinen- und Anlagenbau GmbH
Original Assignee
Linnhoff & Thesenfitz Maschinen- und Anlagenbau 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 Linnhoff & Thesenfitz Maschinen- und Anlagenbau GmbH filed Critical Linnhoff & Thesenfitz Maschinen- und Anlagenbau GmbH
Publication of EP0171796A2 publication Critical patent/EP0171796A2/fr
Publication of EP0171796A3 publication Critical patent/EP0171796A3/fr
Withdrawn legal-status Critical Current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
    • F04B7/0084—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

Definitions

  • the distribution device In the processing of ready-mixed concrete, vehicles are used with which the ready-mixed concrete is transported to the processing site in order to be processed there with a distribution device, which is usually also designed as a vehicle.
  • the distribution device essentially consists of an intermediate storage container for receiving the delivered concrete and a delivery line on a placing boom, one end of which is connected to the intermediate storage container, the other end of which is designed as an outlet device with which the concrete is metered to the place of need becomes.
  • Conveying the concrete through the delivery line is usually carried out with a pump between the container used for the intermediate storage of the concrete and the delivery line.
  • This pump must ensure a continuous delivery of concrete, which is ensured in the design of the pump as a piston pump in that two pump cylinders are provided, one end of which is open and is alternately connected to the intermediate storage container and the delivery line, in the pump cylinders
  • Pump pistons alternately work in such a way that concrete is sucked into the cylinder, the open end of which is connected to the intermediate storage container, through the returning piston, and from the cylinder, the open end of which is connected to the delivery line, with the piston advancing, the one sucked in in the previous work cycle Concrete is pressed into the delivery line.
  • a curved pipe can be used as the switching means, one end of which is permanently connected to the delivery line and the other end of which is connected to one of the two pump cylinders in a continuously successive change.
  • the curved tube is mounted laterally on a shaft which is forced to pivot in both circumferential directions to the extent that the distance between the two pump cylinders and thus the pivoting path of the curved tube proves to be necessary.
  • the horizontally arranged shaft is supported at both ends, one bearing being the actual support bearing of the shaft and the other bearing serving primarily for adjustment in such a way that the pipe end which can be pivoted between the two cylinders can be moved past the cylinder ends, nevertheless surrounds the cylinder, the piston of which is currently being conveyed, with sufficient sealing effect.
  • This support means a fine and correspondingly complex adjustment of the bearings and, above all, a relatively frequent readjustment of the bearing. In the effort not to have to "readjust" too often, bearing or shaft tension is easy.
  • the second warehouse is a construction effort that one would have liked to have avoided if this could be done without negative effects.
  • the vertically standing wave is flying, i.e. only supported at one end, this bearing is a support and adjustment bearing, so it is relatively expensive.
  • the object of the invention is now to remedy this situation and to design and improve a swivel tube system of the aforementioned type in an expedient manner in view of the problem described.
  • the solution should do without adjustable bearings.
  • the invention thus proceeds from a swivel tube system according to the genus reached out from claim 1 and it is characterized by the features of the characterizing part of claim 1 and the subclaims.
  • the features of the subclaims characterize features which embody and supplement the invention in a particularly expedient manner.
  • prefabricated concrete is located in an intermediate storage container 1 (FIG. 1). It is to be fed out of this intermediate storage container 1 to a delivery pipe 2 which continues in a pipe sequence which is mounted on a concrete placing boom. The end of the pipe sequence facing away from the pipe 2 is designed as an outlet device through which the concrete is released at the point of need.
  • two counter-running concrete piston pumps 3, 4 are provided in order to maintain a continuous delivery of concrete in the delivery pipe 2 and the subsequent pipe sequence.
  • the cylinders of both piston pumps end with their open, inner ends in the concrete receiving space of the intermediate storage container 1.
  • the outer cylinder ends are closed with pistons 5, which are adjusted in opposite directions, ie when one piston is adjusted inwards (in the direction of the intermediate storage container 1, arrow B ), the other piston is moved outwards (in the direction of increasing Distance to container 1, arrow C).
  • pistons 5 which are adjusted in opposite directions, ie when one piston is adjusted inwards (in the direction of the intermediate storage container 1, arrow B ), the other piston is moved outwards (in the direction of increasing Distance to container 1, arrow C).
  • concrete is sucked out of the intermediate storage container 1 into the respective cylinder (pump 3 or pump 4).
  • concrete is pushed out of the respective cylinder (pump 4 or pump 3).
  • a curved pipe 6 is pivotally mounted near its end associated with the delivery pipe 2 in a bearing 7, the delivery pipe being independent of the position of the pivot pipe 6 2 facing end continues tightly in the conveyor tube 2, so that concrete from the swivel tube 6 enters the conveyor tube 2.
  • the other end of the swivel tube 6, however, is dependent on the position of the swivel tube 6 with the open end of the cylinder of either one or the other piston pump in such a way that the connection is in communication with the cylinder of the piston pump, the piston of which is moved inwards to let concrete from this cylinder get into the swivel tube.
  • the drive for pivoting the swivel tube and the piston of the piston pumps is designed so that the swivel tube is certainly in front of the cylinder, the piston of which is moved inwards and the open end of the cylinder is free, the piston of which moves outwards. Both cylinder openings are surrounded by a common sliding plate 10, on which the swivel tube 6 slides with its free end face.
  • This slide plate 10 was originally divided vertically between the two cylinders, which has made assembly easier. However, since in the known solutions the pivot tube often got caught on the joint between the two parts of the plate 10, the advantage of simple assembly was later dispensed with and a one-piece sliding plate was used, as shown in FIG. 1 in accordance with current practice is.
  • FIG. 2 which, however, is designed according to the invention, as will be explained below.
  • the intermediate storage container is again designated 1
  • the slightly differently curved pivot tube is designated 6 and the two piston pumps are located one behind the other perpendicular to the image plane, the open end of the front piston pump being connected to the slide plate 10 or to one of those surrounded by the slide plate 10 Openings 11 is then to be thought.
  • the pivot tube 6 is at one end between this opening 11 and the corresponding opening of the piston pump behind it can be pivoted.
  • the pumps themselves are not shown because they can correspond to the pumps 3, 4 of the arrangement according to FIG. 1 in arrangement, structure and mode of operation.
  • the other end of the swivel tube 6 continues, as in FIG. 1, in a conveyor roar.
  • the swivel tube 6 is fastened to the side of the swivel shaft 12, the left end of which is rotatably mounted in a bearing 13 in the image plane, the bearing housing and the slide plate 10 being able to be in one piece.
  • a drive 14 serves to drive the shaft 12 in two circumferential directions for pivoting the swivel tube 6.
  • the shaft 12 can be axially displaced within the bearing 13 within limits, but this property is not used in normal operation because a second bearing 15 is located at the other end the shaft 12 for playlessness in the longitudinal direction of the shaft 12 s b rgt.
  • the shaft 12 and thus the swivel tube 6 becomes axial in the axial direction by adjusting the bearing 15 and utilizing the displaceable bearing the shaft 12 is adjusted in the bearing 13 until the distance mentioned is reduced again to the desired dimension.
  • the use of the bearing 15 and the adjustment can also be seen here as an undesirable effort and, in the case of excessive adjustment, tensions can also occur in the shaft 12 or in the entire system, namely when the distance between the sliding plate 10 and swivel tube 6 is just movements between the two Allows sharing, but this movement is only possible against a biasing force that occurs when adjusting the bearing 15.
  • the shaft 12 is vertical, the bearing 15 is not provided, but the only bearing 13 is forcibly adjustable.
  • FIG. 2 The arrangement in FIG. 2 is designed in accordance with FIG. 3 to achieve this object.
  • a ring 16 made of abrasion-resistant material is placed on the end face of the sliding plate 10.
  • the surface of the ring 16 facing away from the sliding plate 10, the end face of the swivel tube 6 and a collar 17 fastened to the swivel tube 6 form an annular chamber 18 in which a plate spring 19 is arranged.
  • the plate spring applies the ring 16 to the sliding plate 10 with a defined tension. If, during operation, the ring 16 wears out due to sliding relative to the sliding plates 10 of both pumps, then no gap is created, but the plate spring 19 continues to apply the ring 16 to the sliding plate 10 of both piston pumps.
  • the arrangement can in principle be provided such that the shaft 12 lies horizontally, as shown, but the arrangement can also be pivoted through 90 ° without a fundamental change, so that the shaft 12 is vertical in the container 1 lying horizontally unchanged; both arrangements are fundamentally and known per se.
  • the arrangement shown can also be modified in that the spring 19 is omitted in its assignment to the swivel tube 6 and instead the Slide plate 10 is resiliently mounted.
  • the sliding plate 10 is, as it were, vertically divided in the view in FIG. 3, one part is permanently assigned to the cylinders, the second part is supported on the first part with the interposition of springs which act in accordance with the plate spring 19, and the spring travel is through known means limited.
  • the ring 16 is adjusted when the ring 16 wears in the illustrated embodiment by releasing the plate spring 19, in the modified embodiment the free-supported sliding plate 10 is adjusted.
  • the sliding plate 10, as shown in Figure 1 must be in one piece, in the solution shown in Figure 3, the sliding plate 10 can be divided vertically between the two cylinders, which facilitates assembly.
  • a step between the two parts of the sliding plate, the resilient ring 16 can compensate to a certain extent if the transition between the two plate parts is designed accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP85110166A 1984-08-16 1985-08-13 Système avec tube pivotant pour pompes à béton Withdrawn EP0171796A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3430193 1984-08-16
DE19843430193 DE3430193A1 (de) 1984-08-16 1984-08-16 Schwenkrohrsystem fuer betonpumpen

Publications (2)

Publication Number Publication Date
EP0171796A2 true EP0171796A2 (fr) 1986-02-19
EP0171796A3 EP0171796A3 (fr) 1987-01-28

Family

ID=6243214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110166A Withdrawn EP0171796A3 (fr) 1984-08-16 1985-08-13 Système avec tube pivotant pour pompes à béton

Country Status (3)

Country Link
EP (1) EP0171796A3 (fr)
DE (1) DE3430193A1 (fr)
ES (1) ES8703105A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030088A1 (fr) * 1994-04-28 1995-11-09 Putzmeister-Werk Maschinenfabrik Gmbh Pompe a matieres epaisses
WO1999040319A1 (fr) * 1998-02-09 1999-08-12 Putzmeister Aktiengesellschaft Dispositif coulissant pour pompe a liquide epais a deux cylindres
US6443718B1 (en) * 2000-02-14 2002-09-03 Multiquip, Inc. Shuttle valve for concrete pump
CN114837085A (zh) * 2022-04-19 2022-08-02 中交第二航务工程局有限公司 自适应高水位变动库区桥梁混凝土泵送装置及施工方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2585147Y2 (ja) * 1991-07-30 1998-11-11 三菱重工業株式会社 コンクリートポンプのゲートハウジング
CN1071390A (zh) * 1991-10-04 1993-04-28 三菱重工业株式会社 混凝土泵的闸阀装置
DE19727102A1 (de) * 1997-06-26 1999-01-07 Putzmeister Ag Rohrweiche für Zweizylinder-Dickstoffpumpen
DE102013215990A1 (de) * 2013-08-13 2015-02-19 Putzmeister Engineering Gmbh Zweizylinder-Dickstoffpumpe mit Rohrweiche

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042930A1 (de) * 1980-11-14 1982-07-08 Stetter Gmbh, 8940 Memmingen Rohrweiche fuer betonpumpen
DE3113787A1 (de) * 1981-04-04 1982-10-28 Friedrich Wilh. Schwing Gmbh, 4690 Herne "mehrwegeventil fuer dickstoffpumpen"
DE3240465A1 (de) * 1982-06-25 1983-12-29 WIBAU AG, 6466 Gründau Vorrichtung zur foerderung von breiigen massen, insbesondere beton

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042930A1 (de) * 1980-11-14 1982-07-08 Stetter Gmbh, 8940 Memmingen Rohrweiche fuer betonpumpen
DE3113787A1 (de) * 1981-04-04 1982-10-28 Friedrich Wilh. Schwing Gmbh, 4690 Herne "mehrwegeventil fuer dickstoffpumpen"
DE3240465A1 (de) * 1982-06-25 1983-12-29 WIBAU AG, 6466 Gründau Vorrichtung zur foerderung von breiigen massen, insbesondere beton

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030088A1 (fr) * 1994-04-28 1995-11-09 Putzmeister-Werk Maschinenfabrik Gmbh Pompe a matieres epaisses
EP0805273A2 (fr) * 1994-04-28 1997-11-05 PUTZMEISTER Aktiengesellschaft Pompe à matières épaisses
EP0805272A2 (fr) * 1994-04-28 1997-11-05 PUTZMEISTER Aktiengesellschaft Pompe à matières épaisses
EP0805273A3 (fr) * 1994-04-28 1998-01-07 PUTZMEISTER Aktiengesellschaft Pompe à matières épaisses
EP0805272A3 (fr) * 1994-04-28 1998-01-07 PUTZMEISTER Aktiengesellschaft Pompe à matières épaisses
WO1999040319A1 (fr) * 1998-02-09 1999-08-12 Putzmeister Aktiengesellschaft Dispositif coulissant pour pompe a liquide epais a deux cylindres
US6220834B1 (en) * 1998-02-09 2001-04-24 Putzmeister Aktiengesellschaft Support pipe for concrete pump with pivoting valve
US6443718B1 (en) * 2000-02-14 2002-09-03 Multiquip, Inc. Shuttle valve for concrete pump
CN114837085A (zh) * 2022-04-19 2022-08-02 中交第二航务工程局有限公司 自适应高水位变动库区桥梁混凝土泵送装置及施工方法

Also Published As

Publication number Publication date
ES8703105A1 (es) 1987-02-16
DE3430193A1 (de) 1986-02-27
EP0171796A3 (fr) 1987-01-28
ES546217A0 (es) 1987-02-16

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Inventor name: JAKOB, GUENTER