1. Drive system for an industrial truck comprising an internal combustion engine, \u2014a four-shaft epicyclic gearing consisting of two or one fixed links which with a first shaft may be connected to the shaft of an internal combustion engine, a first electric motor which is mechanically coupled to a second shaft of the four-shaft epicyclic gearing and is electrically connected to an onboard power supply of the vehicle, a brake coupled to a further shaft of the four-shaft epicyclic gearing, a change gear coupled to a fourth shaft of the four-shaft epicyclic gearing, a summing gear coupled to the change gear, the other input shaft thereof being connected to a second electric motor connected electrically to the onboard power supply and the output shaft thereof being coupled to at least one driven wheel of the industrial truck, at least one consumer for at least one additional function of the vehicle which is coupled to one of the shafts of the epicyclic gearing, a sensor device which detects the speed of the internal combustion engine and the first and second electric motor and generates corresponding signals, and a control and regulating device which controls or regulates the speeds andor torques of the electric motors and the internal combustion engine according to setpoint signals of the set value generator actuated by the operator of the industrial truck and by taking as a basis the output signals of the sensor device, switches the motor operation or generator operation of the electric motors and controls the actuation of the change gear and the brake.
2. Drive system according to claim 1, characterized in that the driven wheel and the internal combustion engine are exchanged relative to their position on the gear arrangement.
3. Drive system according to claim 1, characterized in that the change gear is a reversing gear.
4. Drive system according to claim 1, characterized in that the second electric motor is formed by two electric motors arranged in parallel which are respectively connected to a drive wheel.
5. Drive system according to claim 1, characterized in that the consumer for the additional function of the vehicle is coupled to the shaft of the first electric motor.
6. Drive system according to claim 1, characterized in that at least one further consumer is provided for an additional function of the vehicle, which is arranged on the wheel side of the change gear or reversing gear of the second electric motor.
7. Drive system according to claim 1, characterized in that the consumer for the additional function of the vehicle is a hydraulic pump.
8. Drive system according to claim 7, characterized in that at least one hollow shaft-hydraulic pump (P1) is provided which is arranged concentrically to a gear shaft.
9. Drive system according to claim 7, characterized in that at least one hydraulic pump is provided, operating in both rotational directions.
10. Drive system according to claim 7, characterized in that for braking purposes one controllable throttle (15) is associated with at least one hydraulic pump (P1).
11. Drive system according to claim 1, characterized in that at least one brake (17) is arranged on the wheel side of the change gear or reversing gear or the second electric motor (EM2).
12. Drive system according to claim 1, characterized in that the brake is an electromagnetic brake, disc brake or multiple disc brake.
13. Drive system according to claim 1, characterized in that a sensor device detects the temperatures of the internal combustion engine andor the first and second electric motor andor the regulating and control device (11) andor the electrical accumulator andor the hydraulic means and generates corresponding temperature signals and the control and regulating device controls the power of the internal combustion engine and the electric motors by taking as a basis the output signals of the sensor device such that predetermined values for the operating temperatures are not exceeded.
14. Drive system according to claim 1, characterized in that with a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shafts of the two planetary gears and the second coupling shaft is formed by the ring gear shafts of the two planetary gears.
15. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shaft of the one planetary gear system and the ring gear shaft of the other planetary gear system and the second coupling shaft is formed by the ring gear shaft of the one planetary gear system and the spider shaft of the other planetary gear system.
16. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shafts of the two planetary gear systems and the second coupling shaft is formed by the sun wheel shaft of the one planetary gear system and the ring gear shaft of the other planetary gear system.
17. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shaft of the one planetary gear system and the sun wheel shaft of the other planetary gear system and the second coupling shaft is formed by the ring gear shaft of the one planetary gear system and the spider shaft of the other planetary gear system.
18. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the ring gear shafts of the two planetary gear systems and the second coupling shaft is formed by the sun wheel shaft of the one planetary gear system and the spider shaft of the other planetary gear system.
19. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shaft of the one planetary gear system and the ring gear shaft of the other planetary gear system and the second coupling shaft is formed by the ring gear shaft of the one planetary gear system and the sun wheel shaft of the other planetary gear system.
20. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shafts of the two planetary gear systems and the second coupling shaft is formed by the sun wheel shafts of the two planetary gear systems.
21. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shaft of the one planetary gear system and the sun wheel shaft of the other planetary gear system and the second coupling shaft is formed by the sun wheel shaft of the one planetary gear system and the spider shaft of the other planetary gear system.
22. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shaft of the one planetary gear system and the sun wheel shaft of the other planetary gear system and the second coupling shaft is formed by the sun wheel shaft of the one planetary gear system and the ring gear shaft of the other planetary gear system.
23. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the spider shaft of the one planetary gear system and the ring gear shaft of the other planetary gear system and the second coupling shaft is formed by the sun wheel shafts of the two planetary gear systems.
24. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the ring gear shafts of the two planetary gear systems and the second coupling shaft is formed by the sun wheel shafts of the two planetary gear systems.
25. Drive system according to claim 1, characterized in that in a four-shaft gearing consisting of two fixed links, with two separate shafts and two coupling shafts, the first coupling shaft is formed by the sun wheel shaft of the one planetary gear system and the ring gear shaft of the other planetary gear system and the second coupling shaft is formed by the ring gear shaft of the one planetary gear system and the sun wheel shaft of the other planetary gear system.
26. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, the internal combustion engine is connected to the one coupling shaft, the first electric motor to the other coupling shaft and the brake as well as the change gear to the two separate shafts.
27. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, the brake is connected to the one coupling shaft, the first electric motor to the other coupling shaft and the internal combustion engine as well as the change gear to the two separate shafts.
28. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, the internal combustion engine is connected to the one coupling shaft, the brake to the other coupling shaft and the first electric motor as well as the change gear to the two separate shafts.
29. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, the first electric motor is connected to the one coupling shaft, the change gear to the other coupling shaft and the brake as well as the internal combustion engine to the two separate shafts.
30. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, with two separate shafts and two coupling shafts the internal combustion engine is connected to the one coupling shaft, the change gear to the other coupling shaft and the brake as well as the first electric motor to the two separate shafts.
31. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, with two separate shafts and two coupling shafts the brake is connected to the one coupling shaft, the change gear to the other coupling shaft and the internal combustion engine as well as the first electric motor to the two separate shafts.
32. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of two fixed links, the planetary gears of one step are designed as stepped planetary gears and sun wheels are provided instead of ring gears.
33. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of one fixed link, the fixed link is provided with three-step planetary gears, the planetary gears of each step being respectively in engagement with a sun wheel or ring gear and the fixed link as well as the three gearwheels meshing with the planetary gears being respectively connected to a connecting shaft.
34. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of one fixed link, the fixed link is provided with two-step planetary gears, a sun wheel and a ring gear being in engagement with the planetary gears of the one step as well as a sun wheel or ring gear being in engagement with the planetary gears of the other step and the fixed link as well as the three gearwheels meshing with the planetary gears being respectively connected to a connecting shaft.
35. Drive system according to claim 32, characterized in that in a four-shaft epicyclic gearing, at least one further sun wheel or ring gear connected to a second brake is present.
36. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of one fixed link, the internal combustion engine on the spider shaft, the first electric motor, the brake as well as the change gear are connected to one respective connecting shaft.
37. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of one fixed link, the first electric motor on the spider shaft, the internal combustion engine, the brake as well as the change gear are connected to one respective connecting shaft.
38. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of one fixed link, the brake on the spider shaft, the first electric motor, the internal combustion engine as well as the change gear are connected to one respective connecting shaft.
39. Drive system according to claim 1, characterized in that in a four-shaft epicyclic gearing consisting of one fixed link, the change gear with the spider shaft, the first electric motor, the brake as well as the internal combustion engine are connected to one respective connecting shaft.
40. Drive system according to claim 1, characterized in that the first electric motor is configured as a hollow shaft motor and is arranged concentrically about the one connecting shaft of the four-shaft epicyclic gearing.
41. Drive system as claimed in claim 1, characterized in that the second electric motor is designed as a hollow shaft motor and is arranged concentrically about the output shaft of the change gear, the summing gear is optionally replaced by flanging the hollow shaft motor directly onto the output shaft of the change gear.
42. Drive system according to claim 1, characterized in that the first and the second electric motors are arranged laterally adjacent to the four-shaft epicyclic gearing andor the change gear.
43. Drive system according to claim 1, characterized in that in the change gear or reversing gear (12) a neutral position as well as two or more gears may be engaged.
44. Drive system according to claim 1, characterized in that the change gear andor reversing gear is designed as a four-shaft gearing consisting of two fixed links with two separate shafts and two coupling shafts and is arranged concentrically to the first four-shaft epicyclic gearing, the first shaft of the change gear andor reversing gear being able to be connected to the output shaft of the first four-shaft epicyclic gearing, the second and third shaft of the change gear andor reversing gear being coupled to one respective brake and the fourth shaft of the change gear andor reversing gear being coupled to at least one driven wheel of the industrial truck.
45. Drive system according to claim 1, characterized in that in a change gear andor reversing gear as a four-shaft epicyclic gearing consisting of two fixed links, the brakes are arranged on the two separate shafts.
46. Drive system according to claim 1, characterized in that in a change gear andor reversing gear as a four-shaft epicyclic gearing consisting of two fixed links, the brakes are arranged on the two coupling shafts.
47. Drive system according to claim 1, characterized in that in a change gear andor reversing gear as a four-shaft epicyclic gearing consisting of two fixed links, one brake is arranged on a coupling shaft, the other brake is arranged on a separate shaft.
48. Drive system according to claim 1, characterized in that the change gear andor reversing gear is designed as a three-shaft epicyclic gearing, the first shaft of the change gear andor reversing gear being able to be connected to the output shaft of the four-shaft epicyclic gearing, the second shaft of the change gear andor reversing gear being coupled to at least one driven wheel of the industrial truck, the third shaft of the change gear andor reversing gear being able to be arrested by means of a brake and two shafts of the change gear andor reversing gear being able to be connected to one another by means of a clutch.
49. Drive system according to claim 1, characterized in that the change gear andor reversing gear is designed as an auxiliary gear, the input shaft of the change gear andor reversing gear being able to be connected to the output shaft of the four-shaft epicyclic gearing, and the output shaft of the change gear andor reversing gear being coupled to at least one driven wheel of the industrial truck.
50. Drive system according to claim 1, characterized in that the onboard power supply is provided with an electrical accumulator and a vehicle brake control in the case of a low set braking force, leaves andor shifts the change gear andor reversing gear in the neutral position and controls the second electric motor such that the braking torque is only applied by the second electric motor by braking produced by the generator and the current produced in the manner of a generator is used to charge the electrical accumulator.
51. Drive system according to claim 1, characterized in that the onboard power supply is provided with an electrical accumulator and a vehicle brake control in the case of a high set braking force leaves andor shifts the change gear andor reversing gear into the shift position belonging to the respective direction of travelvehicle speed and controls the second electric motor such that the permissible braking torque generated by the generator is applied and the current produced in the manner of a generator is used to charge the electrical accumulator, controls the internal combustion engine in driven mode and controls the first electric motor such that the speed of the internal combustion engine connected via the four-shaft epicyclic gearing adopts specific, predetermined values and the current produced in the manner of a generator is used to charge the electrical accumulator.
52. Drive system according to claim 1, characterized in that the vehicle brake control leaves andor shifts the change gear andor reversing gear in the neutral position, as soon as falling below a predetermined vehicle speed and controls the second electric motor such that the braking torque is only applied by the second electric motor by braking produced by the generator, the vehicle brake control actuates (i.e. closes) the brake coupled to the four-shaft epicyclic gearing and which controls the first electric motor such that the internal combustion engine connected to the four-shaft epicyclic gearing is accelerated, until the speed of the internal combustion engine adopts specific predetermined values, the current produced by the second electric motor in the manner of a generator being at least partially consumed.
53. Drive system according to claim 1, characterized in that a vehicle brake control controls the throttle of the hydraulic pump such that when exceeding predetermined values for the speed of the internal combustion engine, an additional braking torque is produced.
54. Drive system according to claim 1, characterized in that a vehicle brake control (13) is provided which controls a throttle (15) of the at least one hydraulic pump (P2), such that an additional braking torque is produced when the deviation of the braking deceleration of the vehicle from the set value exceeds a predetermined value.
55. Drive system according to claim 1, characterized in that a vehicle brake control controls a brake (17) on the wheel side, such that it generates an additional braking torque when exceeding the predetermined values for the speed of the internal combustion engine (ICE).
56. Drive system according to claim 1, characterized in that a vehicle brake control, controls at least one brake (17) on the wheel side such that an additional braking torque is produced, when the deviation of the braking deceleration of the vehicle from the set value exceeds a predetermined value.
57. Method for operating a drive system according to claim 1, characterized in that by actuating the brake on the four-shaft epicyclic gearing and disengaging the change gear, the power of the internal combustion engine is transferred to the first electric motor and said electric motor operates as a generator, the current produced in this manner being used for charging the battery for electrical consumers of the vehicle, external electrical consumers or as drive current for the second electric motor.
58. Method for operating a drive system according to claim 1, characterized in that the brake on the four-shaft epicyclic gearing is released and the change gear andor reversing gear is shifted into the shift position belonging to the respective direction of travel and the power of the internal combustion engine is partly transferred mechanically from the shaft of the four-shaft epicyclic gearing, coupled to the change gear, to the summing gear, partly electrically by an electric motor via the onboard power supply to the other electric motor and from said electric motor to the summing gear.
59. Method for operating a drive system according to claim 1, characterized in that in a specific operating range, for example at high tensile force and low driving speed the brake on the four-shaft epicyclic gearing is actuated and the change gear andor reversing gear is left andor shifted into the shift position belonging to the respective direction of travel and the power of the internal combustion engine is mechanically transferred directly to the drive wheel, both electric motors being linked by a predetermined ratio with the vehicle speed.
60. Drive system according to claim 58, characterized in that the brake on the four-shaft epicyclic gearing (10) is actuated at the point of the zero crossing speed of the shaft to which the brake (14) is connected.
61. Method for operating a drive system according to claim 57, characterized in that the transition from series mode to power split mode takes place by the brake remaining actuated on the four-shaft epicyclic gearing, the change gear andor reversing gear being shifted at the point of synchronous drive and output speed into the shift position belonging to the respective direction of travel, the power of the internal combustion engine (ICE) and the electric motors being adjusted to the load status in power split mode and then the brake on the four-shaft epicyclic gearing is released.
62. Method for operating a drive system according to claim 1, characterized in that the transition from power split mode to series mode takes place by the brake on the four-shaft epicyclic gearing being actuated, at the point of the zero crossing speed of the shaft to which the brake is connected, the power of the internal combustion engine and the electric motors being adjusted to the load status in series mode and then the change gear andor reversing gear being shifted into the neutral position.
63. Method for operating a drive system according to claim 56, characterized in that the transition from series mode to power split mode takes place by the second electric motor being adjusted such that it fully applies the output torque, the drive current being taken from an electrical accumulator, then the brake on the four-shaft epicyclic gearing being released, the speed of the internal combustion engine and the first electric motor being regulated such that the change gear andor reversing gear reach the point of synchronous drive and output speed, after which the shift position belonging to the respective direction of travel is engaged and the internal combustion engine and the two electric motors are adjusted to the load status in power split mode.
64. Method for operating a drive system according to claim 1, characterized in that by actuating the brake on the four-shaft epicyclic gearing and disengaging the change gear, the power of the internal combustion engine is transferred to the consumer for the additional functions of the vehicle, and which is coupled to the shaft of the first electric motor.
65. Method for operating a drive system according to claim 1, characterized in that by actuating the brake on the four-shaft epicyclic gearing and disengaging the change gear, the power of the first electric motor is transferred to the internal combustion engine and said internal combustion engine is started.
66. Method for operating a drive system according to claim 1, characterized in that the power of the first electric motor is transferred to the consumer for the additional functions of the vehicle and which is coupled to the shaft of the first electric motor, the electrical power being taken from an electrical accumulator, the brake on the four-shaft epicyclic gearing being released and the change gear being disengaged.
67. Method for operating a drive system according to claim 1, characterized in that the power of the consumer for the additional function of the vehicle which is coupled to the shaft of the first electric motor, is transferred to the first electric motor and said electric motor produces current in the manner of a generator, which is supplied to the electrical accumulator, the brake on the four-shaft epicyclic gearing being released and the change gear being disengaged.
68. Method for operating a drive system according to claim 1, characterized in that the second electric motor fully applies the output torque, the drive current being taken from an electrical accumulator and the change gear being disengaged.
69. Method for operating a drive system according to claim 1, characterized in that the internal combustion engine is started during travel, by the second electric motor fully applying the output torque, the drive current being taken from the electrical accumulator and the change gear being shifted into the shift position belonging to the respective direction of travel and the first electric motor being activated such that the torque required for starting is applied to the internal combustion engine, the brake on the four-shaft epicyclic gearing being disengaged.
70. Method for operating a drive system according to claim 1, characterized in that the internal combustion engine is started during travel, by the second electric motor fully applying the output torque, the drive current being taken from the electrical accumulator and the brake on the four-shaft epicyclic gearing being actuated and the change gear being shifted into the shift position belonging to the respective direction of travel, the first electric motor being activated such that the torque required for starting is applied to the internal combustion engine.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A programmable heterodyne active filter system for a telecommunication receiver comprising:
a casing;
a printed circuit board housed inside the casing;
a capturing device operatively connected to the printed circuit board via an input connector on the casing, the capturing device captures andor radiates electromagnetic wave signals present in a radio electric spectrum of interest of a telecommunication device;
the printed circuit board including:
a first pre-selection filter connected to the capturing device, the first pre-selection filter receives the captured signal from the capturing device and filters the capturing signal to an operational band;
an adjustable radio frequency amplifier connected to the first pre-selection filter, the adjustable radio frequency amplifier amplifies the filtered radio electric spectrum of interest, the radio frequency amplifier is of low level of added noise and includes an adjustable gain chain setting;
a first frequency translator device connected to the adjustable radio frequency amplifier, the first frequency translator device takes the amplified radio electric spectrum of interest exiting the radio frequency amplifier and creates a heterodyne reduction of the radio electric spectrum of interest to an intermediate frequency band;
an intermediate frequency filtering device connected to the first frequency translator device, the intermediate frequency filtering device filters the intermediate frequency signal according to a selectable bandwidth that only allows to pass a portion of the spectrum that contains the information of the signal of interest that it intended to be filtered;
a second frequency translation device connected to the intermediate frequency filtering device, the second frequency translation device transfers the filtered intermediate frequency signal to the original frequency band signal;
a second filter selector connected to the second frequency translation device, the second filter selector takes the original frequency band signal and eliminates false signals, harmonics, and images;
an amplifier connected to the second filter, the amplifier takes the filtered signal from the second filter selector and amplifies the signal and then sends the amplified signal through an output connector operatively connected to the printed circuit board;
an internal control unit independently connected to the pre-selection filter, the frequency synthesizer, and an external energy source.
2. A method for filtering a radio electric spectrum signal for a telecommunication receiver, the method comprising the steps of:
transporting to a location the programmable heterodyne active filter system for a telecommunication receiver of claim 1;
capturing the radio electric spectrum where the signal of interest of the telecommunications receiver is located;
pre-filtering the received radio electric spectrum of interest to make an initial selection of the band of operation;
amplifying the spectrum signal with low added noise and variable gain stages;
reducing by heterodyne the radio electric spectrum to an intermediate frequency band;
filtering the signal of interest through filtering elements in the intermediate frequency whose bandwidth only lets to pass the bandwidth that contains a selected information of the signal of interest and refuses spectral components that are out of the bandwidth; and
carrying the filtered frequency of interest from the interest intermediate band to the original radio electric spectrum band;
sending the signal to the telecommunications receiver.