WO2014001040A1 - Fahrbare betonpumpe sowie verfahren für deren einsatz im transportzustand - Google Patents
Fahrbare betonpumpe sowie verfahren für deren einsatz im transportzustand Download PDFInfo
- Publication number
- WO2014001040A1 WO2014001040A1 PCT/EP2013/061532 EP2013061532W WO2014001040A1 WO 2014001040 A1 WO2014001040 A1 WO 2014001040A1 EP 2013061532 W EP2013061532 W EP 2013061532W WO 2014001040 A1 WO2014001040 A1 WO 2014001040A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- drive
- piston
- cylinders
- operating state
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000005086 pumping Methods 0.000 claims description 14
- 230000002441 reversible effect Effects 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 25
- 230000005484 gravity Effects 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
Definitions
- the invention relates to a mobile concrete pump in which two delivery cylinders whose delivery pistons are rigidly connected to the drive piston of an associated drive cylinder via a common piston rod can be driven in push-pull operation in the operating state by means of a hydraulic pumping arrangement while conveying concrete from a material supply container into a delivery line and the drive piston while in their working cylinders between their rod-side and bottom end positions are reciprocally movable in opposite directions.
- the invention also relates to a method for the use of such a concrete pump in the transport state.
- a pre-assembled body frame is provided, which is mounted on the chassis of a truck chassis and connected to this.
- the mounting frame is intended for receiving a support device, a core pump with material feed container and a distributor mast forming functional units and a drive assembly for controlling the functional units.
- the drive assembly comprises one or more hydraulic pumps and other auxiliary pumps, for example for driving an agitator in the material feed container of the core pump.
- a core pump usually a two-cylinder piston pump is used, which has two pairs of interconnected hydraulic drive cylinder and delivery cylinder whose pistons are rigidly connected in pairs via a common, passing through a water tank piston rod and driven by a hydraulic control in push-pull.
- the concrete is supplied via the material feed tank, in which a stirrer and a pipe switch is located.
- the diverter valve is the input side alternately pivoted in front of frontal openings of the two delivery cylinders and opens on the output side in a delivery line, which is guided over the distribution boom.
- the core pump consisting of drive cylinders and delivery cylinders extends substantially along the chassis and extends from the material supply container in the rear area of the chassis over the rear axles away towards the cab to the front third of the chassis. Accordingly, the common piston rods with drive piston and delivery piston in the operating state in the longitudinal direction of the chassis back and forth in opposite directions. In the transport state, the piston rods with their pistons remain in the last position adopted.
- the drive cylinder in the operating state at one end via a main line alternately with a high-pressure side and a low-pressure side of the pumping arrangement and at its other end via a swing oil line connected to each other, wherein the pump assembly comprises a designed as an adjustable reversing, arranged in a closed hydraulic circuit with the drive cylinders main pump and a pressure side via check valves to the main circuit and the input side connected to a storage tank feed pump.
- the invention is based primarily on the object to improve the mobile concrete pump and the method of the type specified in that the axle load distribution of the concrete pump in the transport state can be moved as needed with simple means towards the front or rear axle.
- the invention is based on the recognition that the position of the piston rods with their drive and delivery pistons within the core pumps in the transport state during road travel has a not insignificant influence on the axle load distribution. Accordingly, it is proposed according to the invention that the drive pistons in the transport state of the concrete pump are moved together in their ground-side or in their rod-side end position and stopped there (US Pat. No. 3,146,721).
- the center of gravity can be moved in the direction of the front axle or by extending the two drive pistons in the direction of the rear axle as needed before starting a ride or at the end of a pump or cleaning process by retracting the two drive piston.
- the main lines and the swing oil line of the hydraulic circuit can be connected either on the rod side or at the bottom end of the drive cylinder. In order to move the drive piston of the two piston rods in the transport state in their rod-side or bottom-side end position, therefore, it requires different hydraulic strategies.
- the drive piston in the transport state under the action of the feed pump via the zero position of the adjustable Re- versierpumpe pressure to be moved together in their rod-side end position the rod side or bottom side arranged swing oil line connected via a switchable in the operating state branch with a main line of the hydraulic circuit.
- a third solution variant of the invention provides that the drive pistons are moved in the transport state under the action of the feed pump in the zero position of the adjustable reversing pump pressure in its bottom end position by the bottom side arranged swing oil line over a shut-off in operation branch with the below atmospheric pressure Storage tank is connected.
- a fourth, technically somewhat more complex solution variant of the invention provides that the drive piston in the transport state under the action of the feed pump in zero position of the adjustable reversing on the one hand and an additional auxiliary pump on the other hand set pressure is moved together in their bottom end position, wherein the rod side arranged swing oil line is connected via a shut-off in the operating state branch with the additional auxiliary pump.
- the auxiliary pump must be dimensioned such that the force exerted on the drive piston via the feed pump is overcompensated by the auxiliary pump. As an auxiliary pump can be switched on, for example, a Rfordtechnikspumpe or mast pump.
- Figure 1 is a side view of a designed as a truck-mounted concrete mobile concrete pump with hydraulic core pump.
- Fig. 2 is a perspective view of the core pump of Fig. 1;
- Fig. 3a to d is a circuit diagram of the core pump with four different
- Embodiment variants for the center of gravity displacement of the respective piston assembly in the transport state are identical to Embodiment variants for the center of gravity displacement of the respective piston assembly in the transport state.
- the mobile concrete pump shown in Fig. 1 has a truck chassis 10 with a chassis 12 and arranged in the region of the front axle 13 cab 14, the motor drive via a drive train 16 with the rear axles 18 can be coupled.
- the chassis 10 carries a concrete pump 20 which is connected via a body frame 22 to the chassis 12.
- the concrete pump assembly essentially comprises a core pump 24 with two hydraulic drive cylinders 7, 8, two in pairs with the drive cylinders 7.8 connected via a water tank 28 conveying cylinder 70,80 and a rigidly arranged at the other end of the conveyor cylinder 70,80 material feed container 32.
- the structure comprises a pressure conveying line 34 which is guided over a trained as articulated boom distributor 36 and at the end of the Last Mastarms has a subsidized concrete for concreting issuing end hose.
- the distribution boom 36 is rotatably supported about a vertical axis on a mast pivot bracket 43 rigidly connected to the body frame 22 in the vicinity of the front end.
- a mast support block 46 is arranged, on which the distribution boom 36 rests in the folded transport state.
- a support device 38 is provided with extendable support legs 40. When concreting the support legs 40 are issued and supported by raising the chassis 12 on the ground.
- the hydraulic pumps 44, 45 can be driven via the drive train 16 coming from the vehicle engine.
- the core pump 24 rests on the mounting frame 22 and extends between the material feed container 32 obliquely forward over the rear axles 18 away in the direction of the cab 14th
- axle load distribution can be varied by either retracting or jointly extending the piston rods 73, 83 (FIG. 2) with drive pistons 71, 81 and delivery pistons 72, 82. This will Point of the mobile concrete pump either shifted forward or backward.
- FIGS. 3 a to 3 d are intended for two-cylinder high-solids pumps which have two delivery cylinders 70, 80 whose front-side openings 74, 84 open into the material supply container 32 and alternately during the pressure stroke via a diverter 48 (FIG. 2) a delivery line 50 are connectable.
- a diverter 48 FIG. 2
- a delivery line 50 are connectable.
- an adjustable rear-end pump 44 is provided in each case in the exemplary embodiments shown, the outputs of which are connected via a respective main line 52, 54 to one end of one of the drive cylinders 7, 8.
- the drive cylinder 7,8 are connected to each other via a swing oil line 56.
- the drive cylinders are 7.8 applied via the reversing pump 44 in push-pull with pressure.
- the drive piston 71 extends in the drive cylinder 7 when the drive piston 81 in the drive cylinder 8 is pushed back over the oil flowing in the swing oil line 56.
- the reversing pump 44 reverses its conveying direction so that the drive pistons 71, 81 move in the respective other direction. From the closed main circuit consisting of reversing pump 44, main lines 52,54, drive cylinder 7,8 and swing oil line 56, a corresponding amount of oil is always fed via the shuttle valve 58 and the pressure relief valve 62 in the tank 60 under atmospheric pressure.
- a feed pump 45 connected to the suction side of the tank 60 is provided via which one of the oil quantities discharged at the shuttle valve 58 is fed back to the low pressure side of the reversing pump 44 via the check valves 64, 66 connected to the main lines 52, 54. Any excess quantity flows via the pressure limiting valve 62 into the tank 60. If the reversing pump 44 is at zero delivery in the operating state, equal pressure prevails in the main lines. In this state, the entire amount of oil of the feed pump 45 flows via the pressure relief valve 62 into the tank 60th
- the four variants shown in FIGS. 3a to d differ in that the two main lines 52, 54 on the drive cylinders 7, 8 are connected on the rod side and the swing oil line 56 on the bottom side in the case of the embodiment variants according to FIGS 3c and d, the main lines 52,54 bottom side and the swing oil line 56 are connected rod side.
- a peculiarity of the invention consists in the fact that the piston rods 73, 83 in both drive cylinders 7, 8 are jointly retracted or extended as required before starting a journey or when a pumping operation is completed when the truck-mounted concrete pump is in its transport state can.
- the center of gravity of the truck-mounted concrete pump is displaced forwards towards the front axle 13 and, in the latter case, towards the rear axles 18 toward the rear.
- a force which acts on the drive pistons 71, 81 is exerted via existing pumps 45, 68, which force produces the desired displacement.
- the bottom side and the rod side piston surfaces of the drive piston 71, 81 are different in size.
- the center of gravity displacement is only triggered when the delivery volume of the reversing 44 is zero.
- Fig. 3a The feed pressure generated by the feed pump 45, which is set for example to 34 bar, is applied to the rod side of the drive cylinder 7.8. Through the valve 90, the rocking oil is discharged at the bottom end of the drive cylinder 7,8 in the storage tank 60. As a result, the drive pistons 71, 81 with piston rod 73, 83 and delivery piston 72, 82 reach their inserted bottom-side end position. The center of gravity 98 of the car sound pump is displaced in the direction of the front axle 13.
- Fig. 3b With the valve 92, a connection between the feed pump 45 and the swing oil line 56 is created.
- the pressure generated by the feed pump 45 is therefore in both drive cylinders 7,8 on both sides of the drive piston 71, 81 at. Due to the area ratios of the bottom-side and rod-side piston surfaces of the drive pistons 71, 81, the drive pistons with piston rod 73, 83 and delivery pistons 72, 82 are displaced in the direction of the rod-side cylinder end. We therefore receive a shift of the Schwerpunks 98 in the direction of the rear axle 18th
- Fig. 3c Here, the feed pressure of the feed pump 45 is located on the bottom side of the drive piston 71, 81 at. As a result, the drive piston can not be pushed back by means of the feed pump 45 alone.
- an auxiliary pump 68 for example an agitator pump and a directional control valve 94, oil is fed externally into the rocker oil line. If the force built up via the auxiliary pump 68 on the rod side of the drive pistons 71, 81 is greater than the force of the feed pump 45 resulting from the gear ratio of the drive pistons 71, 81, the drive pistons 71, 81 together with the piston rod 73, 83 and delivery pistons 72, 82 are located in the retracted bottom end position.
- an additional pressure limiting valve 96 is provided whose limiting value (about 200 bar) is higher than that of the pressure limiting valve 62 of the feed pump 45 (about 34 bar).
- FIG. 3d Through the valve 95, the swing oil line 56 is connected to the drive-side main line 54. Due to the area ratios between the bottom-side and rod-side piston surface in the drive cylinders 7.8, the drive pistons 71, 81 together with piston rods 73, 83 and delivery pistons 72, 82 are displaced in the direction of the bottom end of the drive cylinders 7, 8. This gives us a shift of emphasis towards the rear axle 18.
- the measures described above in connection with FIGS. 3a to d show that, with manageable circuit complexity, the drive pistons 71, 81 can be moved with their piston rods 73, 83 and delivery pistons 72, 82 in the driving state into a common defined end position. As required, a desired center of gravity displacement in the direction of the front axle 13 or rear axle 18 can be achieved. Taking into account that when the drive piston 71, 81 more oil and with retracted drive piston less oil in the core pump 24 remains and the oil tank 60 of the hydraulic system is regularly in front of the core pump 24, thereby the center of gravity displacement can be further enhanced. With the measures according to the invention, therefore, possibly required axle load regulations for traffic approval can be met in borderline cases.
- the invention relates to a method for the use of a mobile concrete pump, wherein two delivery cylinder 70,80, the delivery piston 72,82 via a respective common piston rod 73,83 rigidly with the drive piston 71, 81 of an associated drive cylinder 7.8 are connected.
- the subsidies derkolben 72.82 driven by a hydraulic pump assembly 44,45 while conveying concrete from a material feed tank 32 in a feed line 50 in push-pull by the drive piston 71, 81 in their working cylinders 7.8 between their rod-side and bottom end positions in opposite directions and to be moved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380025624.2A CN104302911B (zh) | 2012-06-29 | 2013-06-05 | 可行驶的混凝土泵及用于其在运输状态下的使用的方法 |
KR1020147032651A KR102054027B1 (ko) | 2012-06-29 | 2013-06-05 | 이동식 콘크리트 펌프 및 상기 이동식 콘크리트 펌프를 운송 상태에서 사용하기 위한 방법 |
EP13726559.1A EP2867531B1 (de) | 2012-06-29 | 2013-06-05 | Fahrbare betonpumpe sowie verfahren für deren einsatz im transportzustand |
BR112014024995-4A BR112014024995B1 (pt) | 2012-06-29 | 2013-06-05 | Processo para o uso de bomba de concreto móvel e bomba de concreto móvel |
JP2015518938A JP6122954B2 (ja) | 2012-06-29 | 2013-06-05 | 移動式コンクリートポンプおよび搬送状態でのその使用方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211367.3A DE102012211367A1 (de) | 2012-06-29 | 2012-06-29 | Fahrbare Betonpumpe sowie Verfahren für deren Einsatz im Transportzustand |
DE102012211367.3 | 2012-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014001040A1 true WO2014001040A1 (de) | 2014-01-03 |
Family
ID=48570169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/061532 WO2014001040A1 (de) | 2012-06-29 | 2013-06-05 | Fahrbare betonpumpe sowie verfahren für deren einsatz im transportzustand |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2867531B1 (de) |
JP (1) | JP6122954B2 (de) |
KR (1) | KR102054027B1 (de) |
CN (1) | CN104302911B (de) |
BR (1) | BR112014024995B1 (de) |
DE (1) | DE102012211367A1 (de) |
WO (1) | WO2014001040A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013225229A1 (de) * | 2013-12-09 | 2015-06-11 | Putzmeister Engineering Gmbh | Autobetonpumpe mit einer Mastauflageeinheit für einen Verteilermast |
DE102018208263A1 (de) | 2018-05-25 | 2019-11-28 | Putzmeister Engineering Gmbh | Vorrichtung zur Förderung von Dickstoff |
DE102019107833A1 (de) * | 2019-03-27 | 2020-10-01 | Putzmeister Engineering Gmbh | Vorrichtung für das Ausbringen eines fluiden Prozesswerkstoffs |
CN110043438A (zh) * | 2019-05-24 | 2019-07-23 | 徐州徐工施维英机械有限公司 | 糊状物料输送装置和工程车辆 |
DE102023110126B3 (de) | 2023-04-20 | 2024-05-08 | Putzmeister Engineering Gmbh | Dickstoffpumpe und Verfahren zum Betrieb einer Dickstoffpumpe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3146721A (en) | 1960-08-08 | 1964-09-01 | Schwing Friedrich Wilhelm | Hydraulic piston pump for the pumping of viscous pulpy or plastic substances |
DE19542258A1 (de) | 1995-11-13 | 1997-05-15 | Putzmeister Maschf | Verfahren und Vorrichtung zur Steuerung einer Zweizylinder-Dickstoffpumpe |
DE19736108A1 (de) * | 1997-08-21 | 1999-02-25 | Putzmeister Ag | Fahrbare Arbeitsmaschine mit teleskopierbaren Stützauslegern |
WO2005093253A1 (de) * | 2004-03-26 | 2005-10-06 | Putzmeister Aktiengesellschaft | Vorrichtung und verfahren zur steuerung einer dickstoffpumpe |
DE102005008217A1 (de) * | 2005-02-22 | 2006-08-31 | Putzmeister Ag | Hydraulikantrieb, insbesondere für Zweizylinder-Dickstoffpumpen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5176823A (ja) * | 1974-12-26 | 1976-07-03 | Kyokuto Kaihatsu Kogyo Co | Konkuriitohonpusha |
JPS5936706Y2 (ja) * | 1979-04-06 | 1984-10-09 | 株式会社新潟鐵工所 | コンクリ−トポンプにおけるダブルシリンダ駆動用閉回路 |
JP2617312B2 (ja) * | 1987-06-26 | 1997-06-04 | 極東開発工業 株式会社 | 流動体移送用自動車 |
DE10246447A1 (de) * | 2002-10-04 | 2004-04-15 | Putzmeister Ag | Fahrbare Betonpumpe mit einem Aufbaurahmen |
JP4890238B2 (ja) * | 2006-12-27 | 2012-03-07 | 極東開発工業株式会社 | ピストン式コンクリートポンプの制御装置 |
-
2012
- 2012-06-29 DE DE102012211367.3A patent/DE102012211367A1/de not_active Withdrawn
-
2013
- 2013-06-05 KR KR1020147032651A patent/KR102054027B1/ko not_active Expired - Fee Related
- 2013-06-05 WO PCT/EP2013/061532 patent/WO2014001040A1/de active Application Filing
- 2013-06-05 CN CN201380025624.2A patent/CN104302911B/zh not_active Expired - Fee Related
- 2013-06-05 JP JP2015518938A patent/JP6122954B2/ja not_active Expired - Fee Related
- 2013-06-05 EP EP13726559.1A patent/EP2867531B1/de active Active
- 2013-06-05 BR BR112014024995-4A patent/BR112014024995B1/pt not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3146721A (en) | 1960-08-08 | 1964-09-01 | Schwing Friedrich Wilhelm | Hydraulic piston pump for the pumping of viscous pulpy or plastic substances |
DE19542258A1 (de) | 1995-11-13 | 1997-05-15 | Putzmeister Maschf | Verfahren und Vorrichtung zur Steuerung einer Zweizylinder-Dickstoffpumpe |
DE19736108A1 (de) * | 1997-08-21 | 1999-02-25 | Putzmeister Ag | Fahrbare Arbeitsmaschine mit teleskopierbaren Stützauslegern |
WO2005093253A1 (de) * | 2004-03-26 | 2005-10-06 | Putzmeister Aktiengesellschaft | Vorrichtung und verfahren zur steuerung einer dickstoffpumpe |
DE102005008217A1 (de) * | 2005-02-22 | 2006-08-31 | Putzmeister Ag | Hydraulikantrieb, insbesondere für Zweizylinder-Dickstoffpumpen |
Also Published As
Publication number | Publication date |
---|---|
DE102012211367A1 (de) | 2014-01-02 |
BR112014024995B1 (pt) | 2021-10-13 |
EP2867531B1 (de) | 2016-08-03 |
CN104302911B (zh) | 2016-10-26 |
KR20150032932A (ko) | 2015-03-31 |
KR102054027B1 (ko) | 2019-12-09 |
JP2015521714A (ja) | 2015-07-30 |
JP6122954B2 (ja) | 2017-04-26 |
EP2867531A1 (de) | 2015-05-06 |
BR112014024995A2 (de) | 2017-06-20 |
CN104302911A (zh) | 2015-01-21 |
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