EP0330882A2 - Mécanisme de commande pour l'alimentation à gaz d'un appareil d'entraînement pour un élévateur incliné - Google Patents

Mécanisme de commande pour l'alimentation à gaz d'un appareil d'entraînement pour un élévateur incliné Download PDF

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Publication number
EP0330882A2
EP0330882A2 EP89102287A EP89102287A EP0330882A2 EP 0330882 A2 EP0330882 A2 EP 0330882A2 EP 89102287 A EP89102287 A EP 89102287A EP 89102287 A EP89102287 A EP 89102287A EP 0330882 A2 EP0330882 A2 EP 0330882A2
Authority
EP
European Patent Office
Prior art keywords
gas supply
internal combustion
control device
combustion engine
engine
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Withdrawn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
EP89102287A
Other languages
German (de)
English (en)
Other versions
EP0330882A3 (fr
Inventor
Franz Josef Auferkamp
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.)
Albert Boecker GmbH and Co KG
Original Assignee
Albert Boecker GmbH and Co KG
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 Albert Boecker GmbH and Co KG filed Critical Albert Boecker GmbH and Co KG
Publication of EP0330882A2 publication Critical patent/EP0330882A2/fr
Publication of EP0330882A3 publication Critical patent/EP0330882A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps

Definitions

  • the invention relates to a control device for the gas supply of a drive unit for an inclined elevator with guide rails for a load suspension means movable thereon, the drive unit having an internal combustion engine and a hydraulic pump for supplying a plurality of hydraulic consumers, each of which is preceded by a control valve.
  • German patent 35 11 940 is a control device of the type mentioned for Actuation of hydraulic cable winch drives for an inclined lift has become known, which is essentially aimed at the fact that when telescoping (extending) the telescopic sections there should be no or only a controlled movement of the load-carrying means and no cable accidents occur during the movement of the guide rails of the telescopic sections and the load-carrying means.
  • a gasoline engine that is coupled to a hydraulic pump.
  • the petrol engine is preferably speed-controlled.
  • the air flap is closed by means of a hand lever and the throttle valve is opened at the same time.
  • the gas supply is increased - again using a hand lever - immediately before switching on a consumer.
  • the consumer is switched on by actuating a control valve. So two actions are required; on the one hand, increasing the gas supply and, on the other hand, switching a control valve on - for example, to open the load carriage. If the load carriage has reached its stop position, the control valve is switched to the blocking position; since the gasoline engine or hydraulic pump is now unloaded, the gas supply to the gasoline engine must be withdrawn by hand.
  • T. belonging proposal is provided in particular with reference to so-called furniture lifts, in which an exact achievement of the holding position is required, between the guide rails of the incline elevator and the load handling device to arrange a path measuring device which controls the electromagnet of a proportional valve according to the distance traveled, which in turn regulates the hydraulic fluid supply to the hydraulic motor of the load winch drive.
  • a control is preferably assigned to the gasoline engine, which releases the quantity control of the hydraulic fluid to be supplied to the hydraulic motor by the proportional valve when the load handler starts up after the gasoline engine has run up (full throttle) and switches the gasoline engine to idle speed when the load handler is braked in accordance with a travel-dependent pulse.
  • a time-controlled electromagnet serving as a full gas magnet is assigned to the start impulse of the driving movement. It is understood that in the control technology mentioned above, the operator needs time-dependent operation of the throttle control on the one hand and the control spool on the other hand, whereby it is unavoidable that the engine in the meantime runs unloaded in the phases in which either the consumer has not yet switched on or the consumer is already switched off. In the special control of furniture lifts using a full gas magnet, a corresponding construction effort is required, with the fact that the latter control is relatively prone to failure.
  • the object of the invention is to eliminate the disadvantages described above and to design the control device in such a way that, on the one hand, there is a reduced operating effort with little construction effort and, on the other hand, gas is supplied to the gasoline engine exactly when power is required.
  • the invention achieves the stated object in a control device of the type mentioned at the outset in that the gas supply to the internal combustion engine can be regulated as a function of the pressure built up by the hydraulic pump.
  • the invention thus frees itself from the consideration that more gas must first be supplied to the gasoline engine before the consumer is switched on (which has been practiced hitherto), but is based on the consideration that when a consumer is switched on, that leading to the consumer Line through the hydraulic pump builds up a - initially still low - pressure.
  • This pressure is used directly to automatically regulate the gas supply to the gasoline engine. This eliminates the need to operate an additional throttle control on the petrol engine.
  • it is ensured that when the consumer is switched off, the gas supply to the gasoline engine is automatically reduced because the hydraulic pump delivers pressure to the tank when the consumer is switched off.
  • the invention is advantageously implemented in such a way that a branch line is provided in the line running from the hydraulic pump to a control valve, which branches acts on a cylinder which is spring-loaded against the hydraulic pressure and which indirectly or directly regulates the gas supply to the internal combustion engine.
  • the piston of the hydraulic cylinder is connected to a Bowden cable or linkage which adjusts the gas supply to the gasoline engine.
  • the pump delivers pressure to the tank so that the spring in the hydraulic cylinder pulls back the Bowden cable and throttles the gas supply.
  • the control device for the gas supply of a drive unit of an inclined elevator should be used.
  • Such inclined lifts have a load winch for opening and lowering the load handler.
  • This load winch is assigned a brake release cylinder, whereby after the control described in DE-PS 35 11 940, care is taken to ensure that a line branches off from the line leading from the pump to the control valve for the load suspension means, which leads to the brake release cylinder of the load winch.
  • the circuit is made so that the brake release cylinder of the load winch releases before the motor of the load winch is acted upon accordingly with hydraulic fluid. This is to prevent the so-called "breakaway torque" on the load winch.
  • the invention further proposes to design the brake release cylinder of the winch for the load handling device as a cylinder spring-loaded against the hydraulic pressure, which cylinder, directly or indirectly regulates the gas supply to the internal combustion engine. In this way - if the spatial conditions allow it - the Brake release cylinders have a dual function and at the same time regulate the gas supply to the internal combustion engine.
  • Fig. 1 denotes a gasoline engine, which is rotatably coupled to a hydraulic pump 2.
  • the hydraulic pump 2 sucks liquid out of the tank 11 and presses the liquid back into the tank via line 14 and control valve 3 in the switching position b shown, via line 14.
  • the load winch motor which is designed as a hydraulic motor and which drives the winch 8 for the extension or retraction of the load suspension means, not shown, is designated by 12.
  • pressure fluid is supplied to the load winch motor 12, so that it drives the winch 8.
  • a pressure builds up in line 13, which releases the brake release cylinder 9, so that the winch 8 can turn freely.
  • the pressure builds up in the branch line 5 and acts on the piston 14 of a cylinder 6 loaded by the spring 10.
  • the piston rod 15 actuates the Bowden cable 7, which leads to the gasoline engine 1 and increases the gas supply.
  • control valve 3 for actuating the load winch motor 12 is shown, for example; in practice, there is at least one further control valve for the retraction and extension of the guide rails and another control valve for the actuation of the hydraulic cylinder for adjusting the inclination of the elevator.
  • Figure 2 basically shows the same circuit; here, however, a Bowden cable 7 'is arranged on the piston rod 15' of the brake release cylinder 9 ', which controls the gas supply to the gasoline engine.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP89102287A 1988-03-04 1989-02-10 Mécanisme de commande pour l'alimentation à gaz d'un appareil d'entraínement pour un élévateur incliné Withdrawn EP0330882A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3807047 1988-03-04
DE19883807047 DE3807047C1 (fr) 1988-03-04 1988-03-04

Publications (2)

Publication Number Publication Date
EP0330882A2 true EP0330882A2 (fr) 1989-09-06
EP0330882A3 EP0330882A3 (fr) 1990-04-11

Family

ID=6348829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89102287A Withdrawn EP0330882A3 (fr) 1988-03-04 1989-02-10 Mécanisme de commande pour l'alimentation à gaz d'un appareil d'entraínement pour un élévateur incliné

Country Status (2)

Country Link
EP (1) EP0330882A3 (fr)
DE (1) DE3807047C1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB513176A (en) * 1938-04-02 1939-10-05 Robert Stevenson Gardner Improvements in hydraulic speed regulators
US2869325A (en) * 1955-04-25 1959-01-20 Tubular Structures Corp Of Ame Hydraulic drive system for portable builder's hoist
US3214901A (en) * 1963-05-22 1965-11-02 Monrad E Iverson Hydraulic control system
DE2433015A1 (de) * 1974-07-09 1976-01-22 Baker Oil Tools Inc Lasttragender mast
DE2525150A1 (de) * 1975-06-06 1976-12-23 Max Jacobs Oelhydraulisches triebwerk, insbesondere fuer einen personen- oder lastenaufzug

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511940C1 (de) * 1985-04-01 1986-10-30 Albert Böcker GmbH & Co KG, 4712 Werne Steuervorrichtung fuer die Betaetigung hydraulischer Seilwindenantriebe fuer einen Schraegaufzug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB513176A (en) * 1938-04-02 1939-10-05 Robert Stevenson Gardner Improvements in hydraulic speed regulators
US2869325A (en) * 1955-04-25 1959-01-20 Tubular Structures Corp Of Ame Hydraulic drive system for portable builder's hoist
US3214901A (en) * 1963-05-22 1965-11-02 Monrad E Iverson Hydraulic control system
DE2433015A1 (de) * 1974-07-09 1976-01-22 Baker Oil Tools Inc Lasttragender mast
DE2525150A1 (de) * 1975-06-06 1976-12-23 Max Jacobs Oelhydraulisches triebwerk, insbesondere fuer einen personen- oder lastenaufzug

Also Published As

Publication number Publication date
DE3807047C1 (fr) 1989-02-02
EP0330882A3 (fr) 1990-04-11

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