Method of safely controlling compaction machine and compaction machine for implementing this method

Abstract

A method of safely controlling a compaction machine, specifically a method of safely controlling a vibratory compaction machine includes at least one vibrating roller connected to at least one electric movement drive of the machine and at least one electric vibration drive, a central machine control unit, a battery system and a control unit of the battery system, according to which the central control unit of the machine overrides the control unit of the battery system. A compaction machine whose central control unit of the machine is data-connected to a control unit of the battery system which is hardwired to at least one control convertor of at least one electric drive of the machine.

Claims

1. A method of safely controlling a compaction machine, specifically the method of safely controlling a vibratory compaction machine comprising at least one vibrating cylinder connected to at least one electric movement drive of the machine and at least one electric vibration drive, a central machine control unit of the machine, a battery system, and a control unit of the battery system, wherein the central control unit of the machine overrides the control unit of the battery system in such a way that at the moment when the electric movement drive of the machine acts as a working recuperative brake of the machine, the central control unit of the machine controls the control unit of the battery system in such a way that the control unit of the battery system allows, when the battery system is charged to 100% of the value of the set maximum charging limit, charging of the battery system by the electric movement drive above this maximum charging limit of the battery system, and wherein the central control unit of the machine brings the machine into a safe stationary state by switching off the contactors, which interrupts the power supply to the individual drives, which at the same time interrupts the power supply to the control convertors, thereby blocking at least one of the parking brakes.

2. The method of safely controlling a compaction machine according to claim 1, wherein the control unit of the battery system is controlled by the central control unit of the machine so that the control unit of the battery system maintains, during normal operation of the machine, the setting of the battery system at the maximum charging limit, the value of which is lower than 100% of the maximum charge value of the battery system.

3. The method of safely controlling a compaction machine according to claim 1, wherein the control unit of the battery system is controlled by a central control unit of the machine in such a way that the control unit of the battery system maintains, during normal operation of the machine, the setting of the battery system at the maximum charging limit, the value of which is lower than 90% of the maximum charge value of the battery system.

4. The method of safely controlling a compaction machine according to claim 1, wherein the control unit of the battery system is controlled by a central control unit of the machine in such a way that at the moment when the electric drive acts as a working recuperation brake of the machine, the control unit of the battery system allows charging of the battery system even at the moment when the battery system is charged to 100% of its maximum values.

5. The method of safely controlling a compaction machine according to claim 1, wherein the moment the charging of the battery system approaches the set charging limit, the control unit of the battery system informs the central control unit of the machine, with the central control unit of the machine informing, via the peripheral control device, the machine operator and enabling the use of all machine functions without restriction.

6. The method of safely controlling a compaction machine according to claim 1, wherein at the moment when the charging of the battery system reaches the set charging limit, the control unit of the battery system informs the central control unit of the machine, with the central control unit of the machine informing, via the peripheral control device, the machine operator and allowing the machine to move at a limited speed and restricting the use of all other machine functions.

7. The method of safely controlling a compaction machine, according to claim 6, wherein at the moment when the charging of the battery system reaches the set charging limit, the control unit of the battery system informs the central control unit of the machine, with the central control unit switching off the safety contactor of the electric vibration drive of the cylinder.

8. A compaction machine, in particular a vibratory compaction machine for implementing the method of safely controlling a compaction machine according to claim 1, wherein it comprises at least one vibrating cylinder connected with at least one electric movement drive of the machine and at least one electric vibration drive, a central control unit of the machine, a battery system and a control unit of the battery system, with the central control unit of the machine being data-connected to the control unit of the battery system, which is hardwired to at least one control convertor of at least one electric drive of the machine, and the control convertor of at least one electric movement drive of the machine is simultaneously hardwired to at least one electric movement drive of the machine, and data-connected to the central control unit of the machine, and at least one electric movement drive of the machine being at the same time the working recuperative brake of the machine, and wherein the battery system is hardwired to a charging contactor which is hardwired to at least one control convertor, with the charging contactor being data-connected to the central control unit of the machine.

9. The compaction machine according to claim 8, wherein the battery system is hardwired to the control convertor of the electric movement drive of the front cylinder, which is hardwired to the electric movement drive of the front cylinder, the control convertor of the electric movement drive of the front cylinder being data-connected to the central control unit of the machine.

10. The compaction machine according to claim 8, wherein the battery system is hardwired to the control convertor of the electric movement drive of the rear cylinder, which is hardwired to the electric movement drive of the rear cylinder, the control convertor of the electric movement drive of the rear cylinder being data-connected to the central control unit of the machine.

11. The compaction machine according to claim 8, wherein the battery system is hardwired to the control convertor of the electric vibration drive of the front cylinder, which is hardwired to the electric vibration drive of the front cylinder, the control convertor of the electric vibration drive of the front cylinder being data-connected to the central control unit of the machine.

12. The compaction machine according to claim 8, wherein the battery system is hardwired to the control convertor of the electric vibration drive of the rear cylinder, which is hardwired to the electric vibration drive of the rear cylinder, the control convertor of the electric vibration drive of the rear cylinder being data-connected to the central control unit of the machine.

13. The compaction machine according to claim 8, wherein the battery system is hardwired to the control convertor of the electric direction control drive which is in hardwired to the electric direction control drive, the control convertor of the electric direction control drive being data-connected to the central control unit of the machine.

14. The compaction machine according to claim 8, wherein between the battery system and the control convertors of the electric movement drives of the rollers there is arranged a safety contactor of the electric movement drives, which is data-connected to the central control unit of the machine.

15. The compaction machine according to claim 8, wherein between the battery system and the control convertors of the electric vibration drives of the rollers, is arranged a safety contactor of the electric vibration drives, which is data-connected to the central control unit of the machine.

16. The compaction machine according to claim 8, wherein between the battery system and the control convertor of the electric direction control drive is arranged a safety contactor of the electric direction control drive, which is data-connected to the central control unit of the machine.

17. The compaction machine according to claim 8, wherein the central control unit of the machine is data-connected to the peripheral control device.

18. The compaction machine according to claim 8, wherein the central control unit of the machine is data-connected to an external computer device.

19. The compaction machine according to claim 8, wherein at least one of the control convertors of the electric movement drives of the cylinders is hardwired to a parking brake arranged on the shaft of the electric drive, to mechanically block the movement of one of the cylinders.

Description

OVERVIEW OF THE FIGURES

(1) The invention will be further elucidated using drawings, in which

(2) FIG. 1 shows the schematic hardwire and data connections of individual parts of a compaction machine,

(3) FIG. 2 shows a side view of a compaction machine with a schematically drawn location of a battery system and schematically drawn movement drives, and

(4) FIG. 3 shows an overhead view of a compaction machine with a schematically drawn location of the battery system and schematically drawn movement drives.

EXAMPLES OF THE PERFORMANCE OF THE INVENTION

(5) The self-propelled vibratory compaction machine (FIG. 1, FIG. 2, FIG. 3) comprises two vibrating cylinders 4, namely a front vibrating cylinder 16 and a rear vibrating cylinder 14, which are connected to the electric movement drives 5 of the machine by an electric movement drive 13 of the front cylinder 16 and the electric movement drive 15 of the rear cylinder 14. The front vibrating roller 16 further comprises electric vibration drives 17, 24 and the rear vibrating cylinder 14 comprises electric vibration drives 18, 24. The compaction machine further comprises a central control unit 1 of the machine, a battery system 3 and a control unit 2 of the battery system 3.

(6) The central control unit 1 of the machine is data-connected to the control unit 2 of the battery system 3, which is hardwired to the five control convertors 7, 8, 9, 10, 11, 23 of the electric drives 5, 19, 24 of the machine. The control convertors 7, 8, 9, 10, 11, 23 of the electric drives 5, 19, 24 of the machine are simultaneously hardwired to these electric drives 5, 19, 24. The control convertors 7, 8, 9, 10, 11, 23 of the electric drives 5, 19, 24 of the machine are simultaneously data-connected to the central control unit 1 of the machine.

(7) Both electric drives 5, 13, 15 of the machine movement are at the same time the working recuperation brake of the machine.

(8) The battery system 3 is hardwired to a charging contactor 12, which is hardwired to the control convertors 7, 8, 9, 10, 11, 23, with the charging contactor 12 being data-connected in analogue to the central control unit 1 of the machine.

(9) The battery system 3 is hardwired to the control convertor 7, 23 of the electric movement drive 13 of the front cylinder 16, which is hardwired to the electric movement drive 13 of the front cylinder 16, with the control convertor 7, 23 of the electric movement drive 13 of the front cylinder 16 being data-connected to the central control unit 1 of the machine.

(10) The battery system 3 is further hardwired to the control convertor 8, 23 of the electric movement drive 15 of the rear cylinder 14, which is hardwired to the electric movement drive 15 of the rear cylinder 14, the control convertor 8, 23 of the electric movement drive 15 of the rear cylinder 14 being data-connected with central control unit 1 of the machine.

(11) The battery system 3 is hardwired to the control cylinder 9, 23 of the electric vibration drive 17 of the front cylinder 16, which is hardwired to the electric vibration drive 17 of the front cylinder 16, with the control convertors 9, 23 of the electric vibration drive 17 of the front cylinder 16 being data-connected to the central control unit 1 of the machine.

(12) The battery system 3 is hardwired to the control convertor 10, 23 of the electric vibration drive 18 of the rear cylinder 14, which is hardwired to the electric vibration drive 18 of the rear cylinder 14, with the control convertors 10, 23 of the electric vibration drive 18 of the rear cylinder 14, being data-connected to central control unit 1 of the machine.

(13) The battery system 3 is hardwired to the control convertors 11, 23 of the electric direction control drive 19, which is hardwired to the electric direction control drive 19, the control direction convertor 11, 23 of the electric direction control drive 19 being data-connected to the central control unit 1 of the machine.

(14) Between the battery system 3 and the control convertors 7, 8 of the electric movement drives 13, 15 of the cylinders 14, 16, a safety contactor 20 of the electric movement drives 13,15 is arranged, which is data-connected to the central control unit 1 of the machine.

(15) Between the battery system 3 and the control convertors 9, 10 of the electric vibration drives 17, 18 of the cylinders 14, 16, a safety contactor 21 of the electric vibration drives 17, 18 is arranged, which is data-connected to the central control unit 1 of the machine.

(16) Between the battery system 3 and the control convertor 11 of the electric direction control drive 19, a safety contactor 22 of the electric direction control drive 19 is arranged, which is data-connected to the central control unit 1 of the machine.

(17) The central control unit 1 of the machine is wirelessly connected to the peripheral control device 6.

(18) The central control unit 1 is occasionally data-connected to an external computing device (not shown).

(19) The control convertor 7 of the the electric movement drive 13 of the front cylinder 16, is hardwired to a parking brake 25 arranged on the shaft 27 between the electric movement drive 13 of the front cylinder 16 and the gearbox 29 to mechanically block the movement of the front cylinder 16. The control convertor 8 of the electric movement drive 15 of the rear cylinder 14 is hardwired to the parking brake 26 arranged on the shaft 28 between the electric movement drive 15 of the rear cylinder 14 and the gearbox 30, to mechanically block the movement of the rear cylinder 14. The parking brakes 25, 26 at the moment when the contactors 12, 20, 21, 22 switch off, mechanically block the movement of the cylinders 14, 16.

(20) The battery system 3 is hardwired via a power supply to the central control unit 1 of the machine. At the same time, the battery system 3 is hardwired to an external charging device (not shown).

(21) The control unit 2 of the battery system 3 is part of the battery system 3.

(22) According to the method of safely controlling a self-propelled vibratory compaction machine, the central control unit 1 of the machine overrides the control unit 2 of the battery system 3 in such a way that at the moment when the electric movement drive 5 operates as a working recuperation brake of the machine, the central control unit 1 of the machine controls the control unit 2 of the battery system 3 in such a way that the control unit 2 of the battery system 3 allows, when the battery system 3 is charged to 100% of the value of the set maximum charging limit, the charging of the battery system 3 by the electric movement drive 5 of the machine above this maximum charging limit of the battery system 3.

(23) The control unit 2 of the battery system 3 maintains, during normal operation of the machine, the setting of the battery system 3 at the maximum charging limit, the value of which is 98% of the maximum charge value of the battery system 3. Alternatively, taking into account the specific operating conditions of the compaction machine, the maximum charging limit can be set at values of 85 to 99% of the maximum charge value of the battery system 3.

(24) The control unit 2 of the battery system 3 is controlled by the central control unit 1 of the machine in such a way that at the moment when the electric drive 5 acts as a working recuperation brake of the machine, the control unit 2 of the battery system 3 allows charging the battery system 3 even when the battery system 3 is charged to 100% of its maximum value.

(25) As soon as the charge of the battery system 3 approaches the set maximum or minimum charging limit, the control unit 2 of the battery system 3 informs the central control unit 1 of the machine and the central control unit 1 of the machine informs the machine operator via the peripheral control device 6 and allows all functions of the machine to be used without restriction. The status marked Warning to the operator corresponds to this status in the attached table with setting examples.

(26) As soon as the charge of the battery system 3 reaches the set minimum or maximum charging limit, the control unit 2 of the battery system 3 informs the central control unit 1 of the machine and the central control unit 1 of the machine informs the machine operator via the peripheral control device 6, and the central control unit 1 of the machine allows the machine to move at a limited speed and limits the use of all other machine functions. For example, the central control unit 1 of the machine switches off the safety contactor 21 of the electric vibration drive 24 of the cylinder 4. Furthermore, in the same way it is possible to switch off the sprinkling system (not shown). The status marked Functionality limitation corresponds to this state in the attached table with setting examples.

(27) The central control unit 1 of the machine puts the machine into a safe stationary state by switching off the contactors 12, 20, 21, 22, which interrupts the power supply to the individual drives 13, 15, 17, 18, 19, which simultaneously interrupts supply of electrical energy to the control convertors 7, 8 and thus to block the parking brakes 25, 26. The state marked Safe shutdown corresponds to this state in the enclosed table with setting examples.

(28) The minimum and maximum charging limits can be set with respect to the operating conditions of the machine, for example with respect to the local temperature or the battery condition, or with regard to the operating history at a given location, their variable value being controlled by the machine's central control unit 1. Or these limits can be set to be fixed.

EXAMPLES OF FIXED CHARGING LIMITS

Example 1

(29) TABLE-US-00001 Minimum Maximum battery battery Degrees of protection capacity capacity Warning to the operator 5% 95% Functional limitations 2% 98% Safe shutdown 1% 100%

Example 2

(30) TABLE-US-00002 Minimum Maximum battery battery Degrees of protection capacity capacity Warning to the operator 10% 93% Functional limitations 5% 95% Safe shutdown 3% 98%

Example 3

(31) TABLE-US-00003 Minimum Maximum battery battery Degrees of protection capacity capacity Warning to the operator 7% 91% Functional limitations 3% 93% Safe shutdown 1% 95%

Example 4

(32) TABLE-US-00004 Minimum Maximum battery battery Degrees of protection capacity capacity Warning to the operator 9% 85% Functional limitations 4% 88% Safe shutdown 2% 90%

Example 5

(33) TABLE-US-00005 Minimum Maximum battery battery Degrees of protection capacity capacity Warning to the operator 9% 81% Functional limitations 7% 83% Safe shutdown 5% 85%

INDUSTRIAL APPLICATION

(34) A method of safely controlling a compaction machine and a compaction machine for implementing this method, according to the invention, can be used on construction compaction machines provided to the maximum extent possible with electric drives.

LIST OF REFERENCE MARKS

(35) 1 central machine control unit 2 control unit of the battery system 3 battery system 4 vibrating cylinder 5 electric movement drive 6 peripheral control device 7 electric drive control convertor of the front cylinder 8 electric drive control convertor of the rear cylinder 9 electric vibration drive control convertor of the front cylinder 10 electric vibration drive control convertor of the rear cylinder 11 direction control drive convertor 12 charging contactor 13 electric movement drive of the front cylinder 14 rear cylinder 15 electric movement drive of the rear cylinder 16 front cylinder 17 electric vibration drive of the front cylinder 18 electric vibration drive of the rear cylinder 19 direction control drive 20 safety contactor for electric movement drives 21 safety contactor for electric vibration drives 22 safety contactor for direction of movement 23 drive control convertor 24 electric vibration drive 25 front cylinder parking brake 26 rear cylinder parking brake 27 shaft I 28 shaft II 29 gearbox I 30 gearbox II