Classifications

• • 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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
  • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
  • F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
• • 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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
  • F16C33/30—Parts of ball or roller bearings
  • F16C33/58—Raceways; Race rings
  • F16C33/583—Details of specific parts of races
  • F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
• • 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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C2233/00—Monitoring condition, e.g. temperature, load, vibration

Definitions

• the present invention initially relates to a sensor set in the form of a modular system, on the basis of which mechanical bearings can be expanded to form sensor bearings.
• the invention further relates to a bearing arrangement in the form of a sensor bearing.
• DE 101 36 438 A1 teaches a sensor arrangement in a roller bearing, in which a plurality of sensor elements are integrated in bearing shells of the rolling bearing.
• the sensor elements can be connected via a digital bus.
• DE 102 36 790 C1 shows an electrical switching device with a plurality of poles, in which each pole has at least one connection contact.
• DE 100 64 420 B4 discloses a device for decentralized detection and evaluation of physical events, in which measuring elements can be programmed via an internal bus system.
• DE 100 54 069 A1 shows a building control system with a basic system and with a logic system.
• the base system comprises at least one active module, while the logic system comprises at least one logic module.
• DE 10 2009 021 469 A1 shows a sensor bearing unit comprising a roller bearing with a sensor housing arranged on a bearing ring with an integrated sensor device for detecting bearing operating states.
• the sensor housing is designed as an adapter ring.
• the adapter ring is dimensioned such that the radial or axial dimensions of the sensor bearing unit are at most equal to those of a ball bearing with the same load capacity.
• DE 10 2012 202 522 A1 describes a sensor bearing with a rolling bearing.
• the rolling bearing comprises an inner ring, an outer ring and arranged therebetween rolling elements.
• the sensor bearing further includes at least one sensor for measuring the forces acting on the rolling elements and a Kirunikationssein- device, which allows data exchange between the sensor and a signal receiver.
• sensor bearings are developed, which are optimized for individual or few aspects.
• sensor bearings are known, which are extremely slim, while other sensor bearings have a special protection against electromagnetic interference.
• the known solutions usually follow the developmental approach of a singular task.
• Condition monitoring sensor units are known from the prior art which, in addition to a measuring element, also comprise signal processing, a signal interface, a voltage supply and further components and are therefore not small in construction.
• the object of the present invention is to be able to make condition monitoring of mechanical bearings more flexible and less complicated.
• the stated object is achieved by a sensor set according to the appended claim 1 and by a bearing arrangement according to the attached subordinate claim 10.
• the sensor set according to the invention is intended for mechanical bearings and comprises a plurality of modules with which at least one mechanical bearing can be expanded to form a sensor bearing.
• the sensor bearing is the mechanical bearing which is supplemented by a sensor system including the components necessary for the operation of the sensor system. so that at least one physical Lische size is measurable during operation of the mechanical bearing on the mechanical bearing.
• several modules must be selected from the sensor set and assigned to the mechanical bearing.
• the sensor set according to the invention represents a modular system.
• the mechanical bearing is preferably a roller bearing.
• the modules of the sensor set according to the invention comprise a plurality of functional modules for measuring bearing state variables and / or for triggering and / or activating predetermined events under predetermined conditions.
• the various functional modules each have an electrical interface with regard to which they are compatible. Thus, the various functional modules are interchangeable with respect to their electrical interface.
• At least one of the functional modules is formed by an acceleration measuring module, which serves for measuring an acceleration occurring at a vibrating component of the bearing.
• Mechanical bearings cause undesired periodic mechanical vibrations, which occur in particular in the form of vibrations. These vibrations cause the location and / or the shape of at least one component of the bearing to change periodically.
• the acceleration measuring module is designed to measure the acceleration occurring during this periodic change of the location or the shape in order to obtain a measure of the undesired oscillation of the component of the bearing. Accordingly, the acceleration measurement module is designed to output an acceleration measurement signal.
• the acceleration measurement signal is formed by raw sensor data since the acceleration measurement module is not suitable for carrying out a complete signal evaluation.
• the modules of the sensor set according to the invention furthermore comprise a plurality of infrastructure modules for realizing communication tasks and / or for storing and / or processing given and / or acquired data.
• the various infrastructure modules each have an electrical interface through which they are interoperable with at least several of the functional modules so that the various infrastructure modules help to ensure the function of the respective functional module.
• At least one of the infrastructure modules is formed by a signal evaluation unit for evaluation of the acceleration measurement signal.
• the signal evaluation unit is in a functional relationship with the acceleration measurement module.
• the acceleration measurement module provides the acceleration measurement signal in the form of raw sensor data
• the signal evaluation unit is used to evaluate the sensor raw data.
• a particular advantage of the sensor set according to the invention is that it allows the flexible extension of a mechanical bearing, through which a
• the at least one acceleration measurement module preferably comprises an acceleration sensor element which enables the immediate conversion of the variable representing the acceleration into an electrical variable. Therefore, the acceleration sensor element is preferably designed to convert the periodic change of the geometric shape and / or the location of the oscillating component of the bearing.
• the acceleration sensor element is preferably formed by a plunger coil, by a microelectromechanical system (MEMS) or by a nanoelectromechanical system (NEMS).
• MEMS microelectromechanical system
• NEMS nanoelectromechanical system
• the acceleration sensor element is preferably provided for a fixed attachment to a component of the bearing.
• This attachment is preferably inelastic.
• the at least one acceleration measurement module preferably further comprises an A / D converter for converting an electrical output signal of the acceleration sensor element into the acceleration measurement signal, so that this is present in digital form.
• This A / D conversion does not represent an evaluation of the acceleration measurement signal.
• the at least one acceleration measurement module preferably also has a characteristic value generator, which serves to determine characteristic values of the output signal of the acceleration sensor element. The characteristic values form at least part of the acceleration measurement signal. The formation of the characteristic values does not constitute an evaluation of the acceleration measurement signal. Rather, the unit comprising the A / D converter and the characteristic value generator can be regarded as an intelligent A / D converter.
• the signal evaluation unit is preferably configured to execute algorithms for evaluating the acceleration measurement signal.
• the signal evaluation unit preferably comprises a computing unit.
• the signal evaluation unit is also designed for evaluating signals of further of the various functional modules. It is thus a common signal evaluation unit.
• the signal evaluation unit is preferably designed for linking the acceleration measurement signal with the output signal of at least one of the further functional modules.
• the further functional module is formed, for example, by a temperature measuring module or by a lubricant quality measuring module, so that, for example, conclusions about the causes of strong vibrations can be drawn from the evaluation in the signal evaluation unit.
• the acceleration measuring module and all other of the functional modules each have an electrical interface with respect to which they are compatible, so that all functional modules are interchangeable with respect to their electrical connection.
• the acceleration measuring module and at least one other of the functional modules each have an outer shape with respect to which they are compatible. So that's it Acceleration measuring module and the at least one further of the functional modules within a bearing space provided for this purpose in the bearing interchangeable.
• the acceleration measuring module and all other functional modules preferably have an outer shape with respect to which they are compatible.
• the acceleration measuring module and at least one further of the functional modules have at least one fastening element with respect to which they are compatible.
• the Beministerungsmessmodui and the at least one other of the functional modules jeweiis within a designated storage space in the camp can be fastened.
• the at least one fastening element is formed for example by a pin or by a screw.
• the acceleration measurement module and all other functional modules preferably have at least one fastening element with respect to which they are compatible.
• the acceleration measuring module and at least one other of the functional modules are each interoperable with the signal evaluation unit, so that they can be operated jointly or can also be interchanged.
• the acceleration measuring module and all other of the functional modules are preferably interoperable with the signal evaluation unit.
• the modules of the sensor set according to the invention preferably further comprise a plurality of supply management modules for the supply of bearing components, wherein the bearing components to be supplied are formed by modules from the sensor set and / or by other components of the mechanical bearing. At least several of the supply management modules are preferably different.
• the group of supply management modules preferably comprises at least one module for supplying sensor bearing components with electrical energy.
• the at least one module for supplying electrical energy is preferably designed to supply the acceleration measuring module and / or the signal evaluation unit with electrical energy.
• the at least one module for supplying electrical energy is preferably by a power supply module, by a Accumulator module, by a battery module, by a capacitor module, by a power management module ; by an energy harvesting module, by a generator module, by a signal and energy transfer module and / or by an energy interface module for external devices.
• the group of supply management modules preferably includes at least one supply management module for supplying sensor storage components with lubricant. These preferably include a grease depot or oil depot module and an additive module, from which lubricant can be supplied to the bearing if required.
• the further functional modules for measuring bearing state variables are formed.
• the further functional modules can be designed to control lubricant pumps or to display messages optically or acoustically.
• the group of further functional modules also preferably includes a service module which triggers corresponding activities under predetermined conditions.
• At least one further of the infrastructure modules is preferably designed for the electrical connection of the modules to a connection medium. This is preferably a cutting-edge module which adapts the electrical cutting parts to the respective environment, for example an interface with currents between 4 mA and 20 mA or Ethernet.
• the infrastructure modules preferably contained in the sensor set furthermore include a radio module, an RFID module, an NFC module, a memory module, a cable module, an identification module and / or a service hour module.
• the memory module for example, the measurement data acquired by the function modules can be stored.
• the memory module can also serve for storing reference data.
• connection medium is a bus system.
• the connection medium may also be a wired bus system.
• At least one of the infrastructure modules is preferably designed for wireless data exchange.
• the modules are preferably provided for a rolling bearing, so that they are at least partially integrable in a rolling bearing space.
• the modules can be provided for linear bearings or rotary bearings.
• the bearing arrangement according to the invention comprises a bearing for supporting a machine element. Furthermore, the bearing arrangement according to the invention comprises at least two of the functional modules of the sensor set according to the invention. In this case, one of the at least two functional modules is formed by the acceleration measuring module.
• the bearing arrangement according to the invention further comprises at least one of the infrastructure modules of the sensor set according to the invention.
• the at least one infrastructure module comprises at least the signal evaluation unit. The electrical interface of the acceleration measurement module is electrically connected to the electrical interface of the signal evaluation unit, so that the acceleration measurement signal is routed to the signal evaluation unit.
• the bearing assembly according to the invention also has those features that are specified in connection with the sensor set according to the invention and its preferred embodiments.
• the acceleration sensor element is preferably fixedly attached to a component of the bearing, wherein it is preferably inelastic and rigidly connected to this component.
• the bearing arrangement according to the invention is preferably formed by the acceleration measuring module and by the signal evaluation unit for condition monitoring of the bearing.
• the modules of the bearing arrangement can be coupled with systems located outside the bearing.
• a coupling can be ner modules to external power supply systems or external facilities for data processing and data evaluation done.
• the sole FIGURE shows a schematic diagram of an acceleration measuring module 01 of a preferred embodiment of a sensor set according to the invention.
• the acceleration measuring module 01 comprises an acceleration sensor element 02 and an A / D converter 03 for converting an output signal of the acceleration sensor element 02.
• the acceleration sensor element 02 is used for measuring vibrations on a mechanical bearing (not shown).
• the acceleration measuring module 01 has a voltage supply and communication connection 04 via which it is supplied and controlled with electrical voltage.
• the voltage supply and communication connection 04 is compatible with corresponding connections of further modules (not shown) of the sensor set according to the invention, so that interchangeability is given in this regard.
• the acceleration measuring module 01 has a mechanical connection 05, via which it can be installed in the mechanical bearing (not shown).
• the mechanical connection 05 is compatible with corresponding connections of further modules (not shown) of the sensor set according to the invention, so that interchangeability is given in this respect.
• the acceleration measuring module 01 further has a connection for outputting a Beschieun onlysmesssignals 06, which includes in particular signal characteristics.
• the connection to the output of a Beschieuni- measurement signal 06 is compatible with corresponding connections of other modules (not shown) of the sensor set according to the invention, so that in this regard, an interchangeability is given.
• the connection to the output of a Bescherung- measurement signal 06 is to be connected to a corresponding interface of a Signalauswer- te unit (not shown) of the sensor set according to the invention, so that the acceleration measurement signal in the signal evaluation unit (not shown) can be evaluated.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=57321044

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Family Cites Families (12)

• 2016
  • 2016-09-15 EP EP16795223.3A patent/EP3356692A2/de not_active Withdrawn
  • 2016-09-15 DE DE102016217583.1A patent/DE102016217583A1/de not_active Ceased
  • 2016-09-15 WO PCT/DE2016/200432 patent/WO2017054810A2/de active Application Filing
  • 2016-09-15 US US15/761,216 patent/US20180258987A1/en not_active Abandoned
  • 2016-09-15 CN CN201680055671.5A patent/CN108138840B/zh not_active Expired - Fee Related

Also Published As

Similar Documents

Legal Events