WO2014056925A1 - Hydraulisches antriebssystem und verfahren zum antrieb eines bandförderers - Google Patents
Hydraulisches antriebssystem und verfahren zum antrieb eines bandförderers Download PDFInfo
- Publication number
- WO2014056925A1 WO2014056925A1 PCT/EP2013/070961 EP2013070961W WO2014056925A1 WO 2014056925 A1 WO2014056925 A1 WO 2014056925A1 EP 2013070961 W EP2013070961 W EP 2013070961W WO 2014056925 A1 WO2014056925 A1 WO 2014056925A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- primary
- drive system
- hydraulic
- pressure
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/28—Conveyors with a load-conveying surface formed by a single flat belt, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
- F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4131—Fluid exchange by aspiration from reservoirs, e.g. sump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid valves
Definitions
- the invention relates to a hydraulic drive system and a method for driving a belt conveyor according to the type specified in the preamble of claim 1 and 16 respectively.
- a mobile conveyor with a belt conveyor for bulk material, thick stock and the like conveyed is known.
- Such conveyors are distributed by the applicant with a hydraulic drive for the belt conveyor.
- the required amount of hydraulic oil is controlled via a proportional valve, which is arranged in the main circuit between the hydraulic pump and the hydraulic motor.
- a control block is needed, which is suitable for this amount of oil and therefore is designed as a special part.
- the present invention seeks to improve the known device for controlling the drive of a belt conveyor and provide a drive system and method, whereby energy losses are reduced in the belt drive and reliable control of the belt transport can be achieved without complex special components.
- the solution according to the invention essentially consists of directly controlling the primary pump via an additional hydraulic control circuit with standard components.
- the primary pump as a variable displacement pump has a pump regulator as an actuator for regulating the delivered hydraulic fluid flow
- the control device comprises a hydraulic control circuit operated by means of an auxiliary pump to pressurize the pump regulator with an adjustable control pressure. This allows sensitive control and efficient operation of the hydraulic primary circuit without the need for complex valves or valves for influencing large oil flows.
- the primary pump on the pressure side via a pressure line of the primary circuit free of valves directly connected to the hydraulic motor, so that the energy losses are minimized.
- a further preferred embodiment of the invention provides that the primary pump is arranged in a closed primary circuit, wherein the hydraulic motor is connected on the output side via a return line directly to the suction inlet of the primary pump. In this way, the required oil volume in the reservoir or tank can be kept low.
- a pressure limiting valve for overpressure protection of the primary circuit is arranged in a branching off from the pressure side of the primary pump branch line.
- the suction inlet of the primary pump is connected via a supply line with a non-pressurized reservoir for hydraulic fluid, and when in the supply line, a biased in the direction of the primary pump check valve is arranged.
- the primary pump is driven by a motor of the conveyor, in particular an electric motor or internal combustion engine with optionally variable speed.
- a further advantageous application possibility results from the fact that the hydraulic motor has a driven coupled to a drive roller of a particular telescoping conveyor belt of the belt conveyor output.
- the auxiliary pump designed as a fixed displacement pump is motor-driven together with the primary pump via a common drive train, so that only one drive source is required.
- control circuit has a pressure relief valve for the defined limitation of the output pressure of the auxiliary pump.
- pressure limiting valve is arranged in a connecting line between the pressure outlet of the auxiliary pump and the suction inlet of the primary pump.
- the control circuit has a proportional valve which can be activated via an electrical control device in accordance with a desired value specification for adjusting the control pressure at the pump regulator.
- the auxiliary pump is connected on the pressure side via a control line to the pump controller of the primary pump and the proportional valve is arranged in a branching from the control line and leading to a tank branch line.
- the proportional valve has an actuator for manual adjustment for emergency operation.
- control circuit has a fixed throttle arranged downstream of the pressure output of the auxiliary pump.
- pump controller comprises a spring-assisted actuating cylinder which can be acted upon by the control circuit with hydraulic fluid for adjusting a swash plate of the primary pump.
- Another aspect of the invention lies in a mobile conveyor with a belt conveyor and a hydraulic drive system according to the invention.
- the object mentioned is achieved by the flow rate is influenced by a pump controller designed as a variable primary pump, and that a control pressure to the pump controller via a means of an auxiliary pump operated, separate from the primary hydraulic control circuit is applied.
- a pump controller designed as a variable primary pump, and that a control pressure to the pump controller via a means of an auxiliary pump operated, separate from the primary hydraulic control circuit is applied.
- Fig. 1 is a mobile conveyor with a hydraulically driven
- Fig. 2 is a circuit diagram of a hydraulic drive system for the
- the conveying apparatus 10 shown in the driving state in FIG. 1 comprises a telescoping main belt conveyor 12, a feed belt conveyor 14, a chassis 16 with cab 18 and an energy-efficient hydraulic drive system 20 for the belt conveyor 12, with which the belt speed of the belt conveyor 12 Continuously regulate conveyed conveyed circulating conveyor belt.
- a hydraulic drive circuit 22 is illustrated with thick lines and a separate control device in the form of a hydraulic control circuit 24 with thin lines.
- the drive circuit 22 has a closed primary hydraulic circuit 26 in which a primary pump 28 for circulating hydraulic oil and a hydraulic motor 30 for driving the conveyor belt of the belt conveyor 12 are arranged.
- the driven by diesel engine 29 primary pump 28 is designed as a variable displacement pump, for example as a swash plate pump and has a pump controller 32 as an actuator for regulating the subsidized hydraulic oil flow.
- the pump regulator 32 comprises a spring-supported actuating cylinder 34, which can be acted on by the control circuit 24 with hydraulic oil and changes according to the inclination angle of a swash plate 36 of the primary pump 28.
- the primary pump 28 is connected on the pressure side via a pressure line 38 of the primary circuit 26, free of valves, directly to the input side of the hydraulic motor 30.
- This consists in the embodiment shown of two individual motors 40 which are arranged parallel to each other in the primary circuit 26 and the output side via a common return line 42 are connected to the suction inlet of the primary pump 28.
- the hydraulic motor 30 has an output coupled to a drive roller 31 of a conveyor belt of the belt conveyor 12.
- a pressure limiting valve 44 is arranged in a branch line 46, which leads from the pressure line 38 to the return line 42. Downstream of the mouth of the branch line 46, the primary circuit 26 is connected via a feed line 48 with a non-pressurized oil tank 50.
- a check valve 52 spring-biased in the direction of the primary pump 28 is arranged in the supply line 48.
- the control circuit 24 is operated by means of an auxiliary pump 54, which is driven by a drive 56 of the drive train of the primary pump 28 and promotes a constant pump a relatively small amount of oil.
- the auxiliary pump 54 is connected via a suction line 57 to the tank 50.
- control circuit 24 comprises a pressure relief valve 58 in a connecting line 60, which branches off from the pressure output of the auxiliary pump 54 and opens into the suction inlet of the primary pump 28.
- the pressure output of the auxiliary pump 54 is connected via a control line 62 to the actuating cylinder 34.
- a fixed throttle 64 is arranged in the control line 62.
- the specification of a desired value of the control pressure is made possible by means of a proportional valve 66, which is adjustable via an electrical control device 68 and, if appropriate, can be operated manually for emergency operation.
- This proportional valve 66 is in a branch arranged line 70 which branches off from the control line downstream of the fixed throttle 64 and leads to the tank 50.
- the diesel engine 29 drives the primary pump 28 with a rotational speed which can be varied within certain limits, the pressure protection of the primary circuit 26 being ensured by the pressure limiting valve 44.
- the pressure oil is fed directly from the pressure side of the primary pump 28 without valves in the hydraulic motor 30, so that a low-loss drive is achieved.
- the control of the amount of oil in the circuit 26 and thus the belt speed of the belt conveyor 12 is realized via the separate control circuit 24.
- the auxiliary pump 54 is also driven by the drive 56 of the primary pump 28 by the motor 29, whereby only a relatively small control oil flow is needed.
- the pressure relief valve 58 By the pressure relief valve 58, the maximum system pressure is set, which is well below the pressure in the primary circuit 26. Excess oil is fed to the suction side of the primary pump 28, so that the required amount of tan oil is reduced. Together with the oil returning from the hydraulic motor 30, there is an excess amount of oil on the suction side of the primary pump 28, thereby improving its service life.
- excess oil is optionally passed through the check valve 52 to the tank 50. Thus, an oil exchange in the primary circuit 26 is ensured.
- the fixed throttle 64 downstream of the branch of the pressure relief valve 58 ensures a constant flow of oil to the control and proportional valve 66 and the pump controller 32 even with varying diesel speed.
- proportional valve 66 can be the control pressure on the Infinitely adjust the pump controller. Accordingly, the pivot angle of the primary pump 28 and so regulated with the belt speed. For emergency operation and manual adjustment of the proportional valve 66 is possible.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380053065.6A CN104837680B (zh) | 2012-10-11 | 2013-10-08 | 液压的驱动系统以及用于驱动带式输送器的方法 |
DE112013004977.5T DE112013004977B4 (de) | 2012-10-11 | 2013-10-08 | Hydraulisches Antriebssystem und Verfahren zum Antrieb eines Bandförderers |
US14/669,652 US9463933B2 (en) | 2012-10-11 | 2015-03-26 | Hydraulic drive system and method for driving a belt conveyor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012218546.1 | 2012-10-11 | ||
DE102012218546.1A DE102012218546A1 (de) | 2012-10-11 | 2012-10-11 | Hydraulisches Antriebssystem und Verfahren zum Antrieb eines Bandförderers |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/669,652 Continuation US9463933B2 (en) | 2012-10-11 | 2015-03-26 | Hydraulic drive system and method for driving a belt conveyor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014056925A1 true WO2014056925A1 (de) | 2014-04-17 |
Family
ID=49385230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/070961 WO2014056925A1 (de) | 2012-10-11 | 2013-10-08 | Hydraulisches antriebssystem und verfahren zum antrieb eines bandförderers |
Country Status (4)
Country | Link |
---|---|
US (1) | US9463933B2 (de) |
CN (1) | CN104837680B (de) |
DE (2) | DE102012218546A1 (de) |
WO (1) | WO2014056925A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6539564B2 (ja) * | 2015-10-26 | 2019-07-03 | Ntn株式会社 | 油圧式オートテンショナ |
US10287104B1 (en) | 2017-11-06 | 2019-05-14 | Caterpillar Paving Products Inc. | System and method to control a conveyor system |
IT201800004832A1 (it) * | 2018-04-24 | 2019-10-24 | Linea e metodo per produrre in ciclo continuo oggetti di plastica | |
US20220267967A1 (en) | 2021-02-23 | 2022-08-25 | Ligchine International Corporation | Swing Boom Concrete Screeding Apparatus |
EP4141292A1 (de) * | 2021-08-23 | 2023-03-01 | Sandvik Mining and Construction Oy | Hydrauliksystem, bergbaufahrzeug und verfahren |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4559778A (en) * | 1978-05-30 | 1985-12-24 | Linde Aktiengesellschaft | Control device for a hydrostatic transmission |
EP0477510A2 (de) * | 1990-09-18 | 1992-04-01 | Brueninghaus Hydromatik Gmbh | Steuer- und Regelvorrichtung für ein hydrostatisches Getriebe |
DE19814536A1 (de) | 1998-04-01 | 1999-10-07 | Putzmeister Ag | Fahrbares Fördergerät |
US20010042763A1 (en) * | 2000-05-16 | 2001-11-22 | Malone Morris J. | Sanding truck sandbagging apparatus |
JP2008168992A (ja) * | 2007-01-11 | 2008-07-24 | Hitachi Constr Mach Co Ltd | 自走式コンベア |
DE102009002849A1 (de) * | 2008-07-11 | 2010-01-14 | Deere & Company, Moline | Antriebssystem für einen Einzugsförderer einer Erntemaschine |
Family Cites Families (23)
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DE1943952U (de) * | 1966-04-27 | 1966-08-11 | Adolf Ries | Streugeraet fuer verschiedene streugueter. |
US3500990A (en) * | 1967-12-29 | 1970-03-17 | Buschman Co Inc E W | Conveyor driving system |
US3800935A (en) * | 1971-09-30 | 1974-04-02 | Fauver J Inc | Conveyor drive control system |
FR2251736B1 (de) * | 1973-11-21 | 1977-06-10 | Poclain Sa | |
US3929219A (en) * | 1974-03-27 | 1975-12-30 | Dravo Corp | Reciprocating variable speed material transfer conveyor system |
US4047452A (en) * | 1976-03-15 | 1977-09-13 | Reliance Electric Company | Belt conveyor drive mechanism |
US4112999A (en) * | 1977-03-07 | 1978-09-12 | Roberts Corporation | Conveyor control system |
US4168611A (en) * | 1978-01-03 | 1979-09-25 | Reliance Electric Company | Acceleration and/or deceleration control system for mechanical power drives |
US4343060A (en) * | 1980-07-18 | 1982-08-10 | Elgin Sweeper Company | Hydraulic control system for a street sweeper |
US4337611A (en) * | 1980-12-10 | 1982-07-06 | Purdue Research Foundation | Automatic control of a combine threshing cylinder and feeder conveyor |
US4821936A (en) * | 1987-09-21 | 1989-04-18 | Mobil Oil Corporation | Hydraulic index drive system |
US5584640A (en) * | 1994-04-20 | 1996-12-17 | Eaton Corporation | Grain tank unloading auger drive means |
DE19632977B4 (de) * | 1996-08-16 | 2009-04-02 | Claas Kgaa Mbh | Vorrichtung und Verfahren zur Einzugssteuerung eines Feldhäckslers |
US5873227A (en) * | 1997-11-04 | 1999-02-23 | Agco Corporation | Combine harvester rotor speed control and control method |
USH1977H1 (en) * | 1998-12-23 | 2001-08-07 | Caterpillar Inc. | Closed loop hydraulic system with variable charge pressure |
GB0005178D0 (en) * | 2000-03-06 | 2000-04-26 | Ford New Holland Nv | Feeder controls for a forage harvester |
US6755296B2 (en) * | 2001-10-11 | 2004-06-29 | Jack Elwell | Self-propelled belt loader |
DE102005023047A1 (de) * | 2005-05-13 | 2007-01-18 | Claas Selbstfahrende Erntemaschinen Gmbh | Einzugsorgansteuerung für landwirtschaftliche Arbeitsmaschine |
CN101850937B (zh) * | 2010-04-13 | 2012-06-13 | 中国一冶集团有限公司 | 起重卷扬机闭式液压油路 |
GB2479566A (en) * | 2010-04-15 | 2011-10-19 | Agco Int Gmbh | Braking system for a rotating chopper drum of a forage harvester |
CN202118028U (zh) * | 2011-06-14 | 2012-01-18 | 赵铁栓 | 一种流量控制装置 |
US20150247294A1 (en) * | 2014-03-03 | 2015-09-03 | Weiler, Inc. | System and Method of Applying Material to a Surface |
US9464391B2 (en) * | 2014-08-29 | 2016-10-11 | Caterpillar Paving Products Inc. | Cold planer having independently controlled conveyors |
-
2012
- 2012-10-11 DE DE102012218546.1A patent/DE102012218546A1/de not_active Withdrawn
-
2013
- 2013-10-08 DE DE112013004977.5T patent/DE112013004977B4/de not_active Expired - Fee Related
- 2013-10-08 CN CN201380053065.6A patent/CN104837680B/zh not_active Expired - Fee Related
- 2013-10-08 WO PCT/EP2013/070961 patent/WO2014056925A1/de active Application Filing
-
2015
- 2015-03-26 US US14/669,652 patent/US9463933B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4559778A (en) * | 1978-05-30 | 1985-12-24 | Linde Aktiengesellschaft | Control device for a hydrostatic transmission |
EP0477510A2 (de) * | 1990-09-18 | 1992-04-01 | Brueninghaus Hydromatik Gmbh | Steuer- und Regelvorrichtung für ein hydrostatisches Getriebe |
DE19814536A1 (de) | 1998-04-01 | 1999-10-07 | Putzmeister Ag | Fahrbares Fördergerät |
US20010042763A1 (en) * | 2000-05-16 | 2001-11-22 | Malone Morris J. | Sanding truck sandbagging apparatus |
JP2008168992A (ja) * | 2007-01-11 | 2008-07-24 | Hitachi Constr Mach Co Ltd | 自走式コンベア |
DE102009002849A1 (de) * | 2008-07-11 | 2010-01-14 | Deere & Company, Moline | Antriebssystem für einen Einzugsförderer einer Erntemaschine |
Also Published As
Publication number | Publication date |
---|---|
DE112013004977A5 (de) | 2015-06-25 |
DE112013004977B4 (de) | 2021-11-18 |
DE102012218546A1 (de) | 2014-04-17 |
CN104837680B (zh) | 2017-06-06 |
US20150197398A1 (en) | 2015-07-16 |
US9463933B2 (en) | 2016-10-11 |
CN104837680A (zh) | 2015-08-12 |
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