Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L50/00—Electric propulsion with power supplied within the vehicle
  • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
  • B60L50/15—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
• • 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
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

• the invention relates to a hybrid motor containing an electric motor and a non-electric motor, especially for use in construction machines.
• Electric operation gives no harmful exhaust gases, and the need for ventilation is greatly reduced as compared with the use of an internal combustion engine. In open plants wherein the supply of sufficient electric power is non-existent, it will be more reasonable to use constructional machines having an internal combustion engine than to provide electricity.
• the operation may be chosen according to the place wherein the machine works.
• emergency situations such as e.g. upon current failure far into a tunnel or mine
• the internal combustion engine may give enhanched security.
• a generator which, again, drives an electric motor when electric power from the network is non-available, is known from i.a. emergency aggregates.
• the generator is expensive, and it complicates the building of the motor system. Additionally, the generator requires extra space within the motor room.
• constructional machines are built such that internal combustion engine and electric motor are exchangeable. In this way, space and costs are saved, but th construction machine has to be rebuilt between various types of comissions.
• the object of the invention is to provide a simple and reliable hybrid drive including an electric motor and a non ⁇ electric motor, e.g. an internal combustion engine, particularly for use in constructional machines such as excavators.
• a non ⁇ electric motor e.g. an internal combustion engine
• Figure 1 shows a diagrammatical interconnection of a non ⁇ electric motor and an electric motor, forming a hybrid motor operating a load
• Figure 2 shows diagrammatically and partly in section a hybrid motor for the operation of a hydraulic excavator.
• reference numeral 1 denotes a non-electric moto the outgoing shaft 2 thereof, through a connectable coupling 3, being connected to a first end of an electric motor's 4 through-going shaft 5, which is attached to the rotor of the electric motor 4.
• the other end of the shaft 5 is adapted to operate a load 6, shown in dotted lines in figure 1.
• the non-electric motor 1 is disconnected by means of the coupling 3.
• the load 6 is coupled to the outgoing shaft 2 of the motor 1 by means of the coupling 3 which, preferably, is a centrifugal coupling or an electric connectable coupling.
• the electric motor 4 is currentless, whilst the through-going shaft 5, and thereby the rotor of the electric motor 4, are driven by the motor 1.
• the rotating mass of the coupling 3, the shaft 5 and the electric motor•s 4 rotor adds an extra fly wheel effect to the motor 1 and, thus, gives an improved damping of oscillations.
• the outgoing effect may be increased beyond the effect of the motor 1 or the electric motor 4 individually; this being desirable in certain cases.
• the non-electric motor 1 have a through-going shaft which, at the end opposite the coupling 3, is adapted to drive a load, whereby the electric motor 4 may drive said load through the rotor of the motor 1, it being possible to have a load coupled to each of the motors.
• the principle may be widened to comprise a chain of motors of various types and connected to each other by means of preferably connectable couplings, and one or more of the motor shafts of the chain may be adapted to drive a load.
• a diesel motor 7 is, through a centrifugal coupling 8, coupled to an electric asynchronous motor's 9 through-going shaft 10, which is adapted to drive a hydraulic pump 11.
• the diesel motor 7, the centrifugal coupling 8, the asynchronous motor 9 and the hydraulic pump 11 are mounted on a frame 12, which is attached to a rotatable suspension column 13 carried by a foundation 14, to which also a cable drum 15 has been attached. Electric power is supplied through a cable 16 coiled up on the cable drum 15.
• the asynchronous motor 9 is, through an electrical connection 17, as known per se, electrically coupled to the cable 16, through wipe contacts (not shown) within the suspension column 13.
• a hydraulic motor 18 is adapted to turn the cable drum 15 and retain a nearly constant tension in the cable 16 which, thus, is kept away from the working area of the excavator, in order to avoid damage of the cable.
• the hydraulic motor 1 is hydraulically coupled to the pump 11 through hydraulic transmissions, not shown.
• the pump 11 may be driven by the diesel engine 7 or the asynchronous motor 9 and, as known, delivers hydraulic power to the hydraulic actuators of the excavator.
• the shaft 10 may, e.g. through belt gearing, operate cooler fan and generator, charging the starting battery of the diesel engine 7, so that these will be workin either the excavator is using the diesel engine 7 or the asynchronous motor 9.
• a control unit 19 senses, through connections (not shown) , the number of revolutions per minute of the hybrid motor as well as the power consumption of the asynchronous motor 9.
• the control unit 19 is adapted to reduce the outgoing power from the pump upon an overload situation, which is recognize through the fact that the number of revolutions per minute, temperature and/or power consumption exceed or fall below predetermined limit values. Further, the control unit 19 is adapted to effect a power reduction adapted to the motor being overloaded, i. e. the diesel engine 7 or the asynchronous motor 9.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19895591

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (3)

Citations (3)

• 1992
  • 1992-11-13 NO NO924408A patent/NO924408D0/no unknown
• 1993
  • 1993-11-08 WO PCT/NO1993/000163 patent/WO1994011216A1/en active Application Filing
  • 1993-11-08 JP JP6511949A patent/JPH08503276A/ja active Pending
  • 1993-11-08 AU AU55780/94A patent/AU5578094A/en not_active Abandoned

Patent Citations (3)

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